JP3314012B2 - Digital broadcasting device, digital broadcasting receiving device, digital broadcasting system, computer-readable recording medium, digital broadcasting method, and digital broadcasting receiving method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a digital broadcasting system.

[0002]

2. Description of the Related Art Recently, satellite digital broadcasting has been started, and a large number of programs are provided using multiple channels. Multichannelization in satellite digital broadcasting is realized by multiplexing a plurality of channels into one band. This multiplexing is performed by MPEG2 (Moving Picture).
e. A technology called a transport stream in the Experts Group 2) standard is used. Specifically, the ISO / IEC standard 13818-1 (MPE
G2 system).

[0003]

In this satellite digital broadcast, however, video information and the like are only transmitted unilaterally from a transmitting station, and there is no interactivity with a receiving terminal. If the user of the receiving terminal can interactively operate the video information according to the content of the video information to be transmitted, various services can be enjoyed.

[0004] For this reason, a system in which the receiving terminal and the transmitting station are connected to each other via a telephone line or the like for dialogue is being realized, but an individual line between each receiving terminal and the transmitting station is required. Costs are also required. The present invention has been made in view of the above problems, and provides a digital broadcasting system that uses video information and the like transmitted from a transmitting station in one direction, as if interactively receiving video information in two directions. Aim.

[0005]

In order to achieve the above object, a digital broadcasting apparatus for realizing a simulated dialogue using digital broadcasting is provided. The digital broadcasting apparatus stores a plurality of image data each having an image data identifier. Image information storage means, and multiplex transmission means for repeatedly transmitting a plurality of the image data as a multiplexed stream, wherein the multiplex transmission means comprises an image stored in the image information storage means. > Readout unit that reads out image data sequentially, and image data with one or more
Number of different first image stream identifiers less than the total number of
And assigns one of them sequentially to the read image data.
Assigning an image stream identifier to each image data
And image data identifiers equivalent value corresponding to a first image stream identifier assigned to the corresponding image data
An image correspondence table generation unit for generating an image correspondence table including equivalent second image stream identifier, the first image stream identification
Wherein a plurality of image data assigned the child, and a plurality of image correspondence table generated by the image correspondence table generation unit, it
Each image correspondence table appears more than a certain time before the corresponding image data, and the image correspondence table and the corresponding image data
Have been assigned the same first image stream identifier
Multiplexing sequentially so that different image data does not appear,
And a multiplexing unit for transmitting the data repeatedly .

A digital broadcast receiving apparatus for receiving a digital broadcast in which a plurality of image data are repeatedly transmitted, wherein the image data is provided with a first image stream identifier, data is transmitted as a multiplexed stream obtained by multiplexing, the multiplexing stream is subjected to image data identifier and the equivalent in the corresponding image data as an image correspondence table identifier, the second corresponding image data An image correspondence table in which an image stream identifier is described is multiplexed, and this image correspondence table is repeatedly transmitted similarly to the image data. A receiving unit for receiving the digital broadcast, and one image data from the received digital broadcast Extracting means for extracting the image data, storing means, reproducing means for reproducing the extracted image data, and operating means for receiving a user's selection operation, And a extraction control means for setting an extraction condition in the extraction means based on chromatography The operation, the extracting means, multiplexing an image correspondence table image correspondence table identifier that matches the set extraction condition is attached An image correspondence table extraction unit for extracting the image from the stream; the storage unit having an image correspondence table storage unit for storing the extracted image correspondence table; A designation accepting unit for accepting an operation of designating switching from data to designated image data, wherein the extracting means further comprises:
Image data extraction to extract image data that matches the extraction conditions
Has a detection section, the extraction control means includes an extraction condition setting unit for setting image correspondence table identifier of the image data identifier and the equivalent in image data designated as the extraction condition, the image correspondence table
No. described in the image correspondence table stored in the storage unit
The two-image stream identifier is read, and the read second image
Using the image stream identifier, the extraction condition
An image data extraction control unit to be set;
Is extracting image data and then extracting image data
It is decided to stop .

[0007] A digital broadcasting system for realizing a simulated dialogue using digital broadcasting includes the following digital broadcasting device and a digital receiving device, wherein the digital broadcasting device performs a simulated dialogue using digital broadcasting. And a multiplex transmitting means for repeatedly transmitting the plurality of image data as a multiplexed stream, wherein the image information storing means stores a plurality of image data each having an image data identifier. with the door, the multiplexed transmission means includes a reading section for reading the image data stored in the image information storing unit sequentially, image de with one or more
Different first image stream identifiers less than the total number of data
And one of them is sequentially added to the read image data.
An image stream identifier assigning unit to be assigned next,
Value equivalent to the image data identifier corresponding to each
Identification of a first image stream assigned to image data
Image support including a second image stream identifier equivalent to the child
An image correspondence table generation unit for generating a table, and a first image stream
The plurality of image data assigned an identifier,
A plurality of image correspondence tables generated by the image correspondence table generation unit,
When each image correspondence table shows the corresponding image data
Appearing more than a while ago, and the image data
In the meantime, the same first image stream identifier is assigned.
Multiplexing sequentially so that different image data does not appear
And a multiplexing unit for repeatedly transmitting the digital signal.
Broadcast receiving apparatus, receiving means for receiving a digital broadcast,
Extraction of one image data from the received digital broadcast
Output means, storage means, and reproduction of the extracted image data.
Playback means, and operation means for receiving a user's selection operation
And setting extraction conditions in the extraction means based on a user operation.
Extraction control means, wherein the extraction means
Images with image correspondence table identifiers that match the specified extraction conditions
Image correspondence table extraction for extracting the image correspondence table from the multiplexed stream
An output unit, wherein the storage unit stores the extracted image correspondence table.
An image correspondence table storage unit for storing, wherein the operating means is
A specified image from the image data reproduced by the recording means.
A specification receiving unit that receives an operation to specify switching to data
And the extracting means further comprises:
It has an image data extraction unit for extracting matching image data.
And the extraction control means outputs the image data of the designated image data.
An image correspondence table identifier with a value equivalent to the
An extraction condition setting unit for setting Te, before Symbol image correspondence table storage unit
The second image source listed in the stored image correspondence table
The stream identifier is read, and the read second image stream is read.
Setting extraction conditions in the extraction means using a frame identifier
An image data extraction control unit, wherein the extraction means
It has this <br/> and to stop the extraction of image data after extracting the image data.

[0008] The image data includes a first image stream.
Beam identifier is assigned, a plurality of the image data is transmitted as a multiplexed stream obtained by multiplexing, the multiplexing streams, the image data identifier and the equivalent in the corresponding image data as an image correspondence table identifier An image correspondence table in which the second image stream identifier of the corresponding image data is described is multiplexed, and this image correspondence table is also transmitted to the digital broadcast receiving apparatus that receives the digital broadcast repeatedly transmitted similarly to the image data. A computer-readable recording medium to which the present invention is applied, a receiving unit for receiving a digital broadcast, an extracting unit for extracting one image data from the received digital broadcast, a storage unit, and reproducing the extracted image data Reproducing means; operating means for receiving a user's selection operation; and extracting means for setting extraction conditions in the extracting means based on the user operation. And control means, wherein the extracting means comprises an image correspondence table extraction unit for extracting from the multiplexed stream image correspondence table image correspondence table identifier that matches the set extraction condition is attached, the storage means Has an image correspondence table storage unit for storing the extracted image correspondence table, wherein the operation means receives an operation of designating switching from image data being reproduced by the reproduction means to designated image data. Part, and the extracting means further comprises:
Image data extraction to extract image data that matches the extraction conditions
Has a detection section, the extraction control means includes an extraction condition setting unit for setting image correspondence table identifier of the image data identifier and the equivalent in image data designated as the extraction condition, the image correspondence table
No. described in the image correspondence table stored in the storage unit
The two-image stream identifier is read, and the read second image
Using the image stream identifier, the extraction condition
An image data extraction control unit to be set;
Is extracting image data and then extracting image data
A program that causes a computer to perform the function of each means for stopping is recorded. In addition, digital broadcasting
Digital broadcasting method to realize
Multiple image data with image data identifiers
An image information storing step of storing data,
Multiple transmission of image data repeatedly as a multiplexed stream
Multiplex transmission step;
Is the image data stored in the image information storing step.
A reading sub-step of sequentially reading over data, image with one or more
Identification of different first image streams less than the total number of data
Child, and one of them is added to the read image data.
Image stream identifier assignment sub-step to be sequentially assigned
Is equivalent to the image data identifier corresponding to each image data.
Value and the first image space assigned to the corresponding image data.
And a second image stream identifier equivalent to the stream identifier.
Image correspondence table generation sub-step for generating an image correspondence table including
And the plurality of copies to which the first image stream identifier is assigned.
Number of image data and the image correspondence table generation sub-step
Each of the generated image correspondence tables and the corresponding image
The table appears more than a certain time before the corresponding image data,
The same first data exists between the image correspondence table and the corresponding image data.
Different image data assigned image stream identifier
Multiplex and transmit repeatedly so that no data appears
And a multiplexing sub-step . Also,
Digital broadcasting in which multiple image data are repeatedly transmitted
A digital broadcast receiving method for receiving, comprising:
A first image stream identifier is assigned to each of the
The image data is multiplexed as a multiplexed stream.
Transmitted, and the multiplexed stream contains the corresponding image data.
Data image data identifier and the corresponding image data identifier.
Equivalent to the first image stream identifier assigned to the data
Image correspondence table in which various second image stream identifiers are described
Are multiplexed, and this image correspondence table is the same as the image data.
Is received repeatedly to receive digital broadcasts.
Communication step and one image data from the received digital broadcast.
An extraction step for extracting data, a storage step,
A playback step of playing back the selected image data,
An operation step for accepting a selection operation and a user operation
And setting extraction conditions in the extraction step
Control step, wherein the extracting step is set
With an image correspondence table identifier that matches the extraction condition
Image correspondence table extraction for extracting correspondence table from multiplexed stream
Sub-step, wherein the storing step is
An image correspondence table storage substep for storing the image correspondence table is provided.
And the operation step is reproduced in the reproduction step.
Finger to switch the current image data to the specified image data
It has a designation reception sub-step for accepting certain operations,
The extracting step further includes matching the set extraction condition.
Image data extraction sub-step for extracting image data
A, the extraction control step, image of the specified images data
Extract image correspondence table identifier with a value equivalent to image data identifier
Extraction condition setting sub-step to be set as
Image stored in image correspondence table storage sub-step
Reads the second image stream identifier described in the correspondence table
Using the read and read second image stream identifier
Image data for setting extraction conditions in the extraction step
Extraction control sub-step, the extraction step
Is extracting image data and then extracting image data
It is decided to stop .

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

Prior to the description of the configuration of the digital broadcasting system according to the present invention, the principle will be described with reference to FIGS. FIG. 1 is an example of content displayed on a display screen of a receiving side, and is a diagram related to a weather forecast. Here, the nationwide and local weather forecasts are divided into multiple contents 151,
, 153,... Here, the content refers to a unit of information interactively operated by the user. These plurality of contents 151, 152,...
, 153,...
The display is switched as indicated by 4, 155, 156, 157.

When the user selects and determines the button 160 of "Tokyo" while the content 153 indicating the weather forecast of the whole country is displayed on the display screen, as shown by an arrow 154, the display screen is displayed. The display is switched from the content 153 to the content 151 indicating the weather forecast of Tokyo. Next, when the user determines and operates the “return” button 158, as indicated by an arrow 155, the display screen is
The display is switched from the content 151 to the display of the original content 153.

Similarly, when the user selects and determines the button 161 indicating “Osaka” on the display screen of the content 153, the display screen is switched from the content 153 to the display of the content 152 as indicated by an arrow 156. . Further, in this state, the user presses the “return” button 159.
Is determined, the display screen returns to the state of the content 153 as indicated by an arrow 157. The contents 151,... Have buttons 158, 159, 160, 161 for such display switching operation.

Since the display of the content can be arbitrarily switched by the above-described display switching operation by the user, the transmitting side transmits each content as described below. FIG. 2 is a diagram schematically illustrating transmission data transmitted from the transmission side. The transmission data 165 is
It consists of data (information) indicating a plurality of contents, and the whole is repeatedly transmitted. The transmission data 165 includes a plurality of image data 166, 167,... 168, and navigation information 169, 170,.
.., 171,...

Each of the image data 166,... Is a main image of each of the contents 151,. Each piece of navigation information 169,.
A bitmap (Bi) showing, for example, buttons 158,...
tmap) data 172, 173, and 174, script (Script) information 175, 176, and 177 that describe the behavior of the user on the receiving side, and a link destination that can switch the display of the content by the user's operation. Hyperlink indicating content (H
hyperlink) information 178, 179, 180.

The content 151 shown in FIG. 1 is represented by image data 166 and navigation information 169. Similarly, the content 152 is represented by the image data 167 and the navigation information 170, and the content 1
53 is represented by image data 168 and navigation information. That is, each image data 166,... And each navigation information 169,.

FIG. 3 is a diagram schematically showing a state of transmission of transmission data 165 transmitted from the transmission side. On the transmitting side, the transmission data 165 is repeatedly transmitted. It is understood that the transmission data 165 is repeatedly transmitted in time. However, although the image data and the navigation information are shown in a frame structure in the figure, the image data and the navigation information corresponding to the digitized image data are actually multiplexed, and the transmission data 165 is converted to the MPE.
It should be noted that the specific transmission data is different from that in the figure because the transmission is performed as a G2 transport stream.

Although not shown, the transmitted image data 166, 167,..., 168,.
.. Indicates the other image data 166, 167,.
8, identification information is added. Similarly, the navigation information 169, 170,.
, Other navigation information 169, 170,.
171 is attached with identification information.

On the other hand, the receiving side monitors the identification information in the transmission data 165, acquires image data including desired identification information and navigation information, and, as shown in FIG. 151 is reproduced and displayed. The acquired navigation information 171 is stored in preparation for a predetermined operation by the user.

An embodiment of a digital broadcasting system according to the present invention will be described below with reference to the drawings based on the above principle. Embodiment 1 1-1. Outline of Configuration FIG. 4 is a configuration diagram of the digital broadcast system according to the first embodiment of the present invention. This digital broadcasting system includes a data transmission device 101 and a plurality of data reception devices 121.

The data transmitting apparatus 101 transmits data of a plurality of contents with hyperlinks to each other by MPE.
The transmission data storage unit 102, the data multiplexing unit 103, the multiplexed information storage unit 104, the system information table generation unit 105, and the transmission unit 106 are configured to be multiplexed in the G2 transport stream and repeatedly transmitted. Have.

The data receiving device 121 is configured to interactively take out and reproduce contents from the MPEG-2 transport stream transmitted from the data transmitting device 101 according to a user operation.
It includes an S decoder section 123, an AV decoder section 124, a reception data storage section 125, a reception control section 126, a signal reception section 127, a reproduction section 128, a display section 129, and an audio output section 130. . 1-2. Data transmission device 101 1-2-1. Configuration of Transmission Data Storage Unit 102 The transmission data storage unit 102 is formed of a storage medium such as a magnetic disk, and stores data and structure information of a plurality of contents constituting one interactive program. 107, a navigation information storage unit 108, and a structure information storage unit 109. Here, the interactive program is referred to as an "event" or a "program" when it is included in the MPEG2 transport stream as transmission data.

The transmission data storage unit 102 stores the transmission data 165 shown in FIG. 2 separately as image data (presentation information) and navigation information as described below. The correspondence between the image data and the navigation information is stored as a structure information table. 1-2-1-1. Presentation Information Storage Unit 107 The presentation information storage unit 107 stores presentation information such as image data and audio data included in each content. 5A and 5B show still image data which is an example of presentation information of the contents 153 and 151, respectively. FIG. 5A shows the file name “s
till5. m2v ", and FIG. 5B shows the still image data 202 indicated by the file name" still1.m2v ". Still image data 201 and 202 are respectively ISO / IEC1381.
It is stored in a digitally encoded format based on the 8-2 (MPEG2 video) standard. The encoding format of the image data may be another format. 1-2-1-2. Navigation information storage unit 108 The navigation information storage unit 108 stores navigation information included in each content. The navigation information includes hyperlink information indicating a link to another content, and describes an object for the user to interactively select the link destination. FIG.
It shows an example of navigation information. here,
The navigation information 301 is an example of the navigation information of the content 153, and the file name “navi5.
nif ”.

The still picture data 201 shown in FIG.
The fact that the content and the navigation information 301 shown in FIG. 6 constitute one content 153 is shown in a structure information table 501 shown in FIG. Navigation information 30
1 is an object definition table (Objectc) shown in a table format.
t Definition Table) 302 and a handler definition table (Handler Definition)
Table) 303 and a hyperlink table (Hyperl)
Ink Table) 304 and a bitmap table (Bit)
map Table) 305.

The object definition table 302 shows, for each index number, information such as a type (type) and attributes of a graphics object such as a button (Button) displayed on the display screen. An index number is described in the “Index” column. The “type” column describes the type of the graphics object. In the “X” and “Y” columns, the X and Y coordinate values of the display reference position on the display screen are described. "Handler"
The column describes the index number of the handler that is executed when the user selects the object indicated by the index number in the data receiving device 121. "Standard Bitmap (Normal Bitma
The column “p)” describes the index number of the bitmap displayed when each object is in the standard state. On the other hand, "focus bitmap (Foc
The “used Bitmap” column describes the index number of the bitmap displayed when each object is in the selected state. Here, the standard state means a state in which the object is only displayed,
The selection state refers to a state in which a displayed object can be selected.

For example, in the row of index number "0" of the object definition table 302, the type is "button",
The coordinate value of the display position at the upper left corner is X = 400, Y = 300
When the data receiving apparatus 121 selects the object, the handler of the index number “2” is executed, and the object using the bitmap of the index number “6” in the standard state and the index number “7” in the selected state is shown. . The same applies to the row with index number “1”.

The handler definition table 303 shows a script (Script) that describes the behavior of the data receiving apparatus 121 for a user operation for each index number. For example, the row of index number “2” in the handler definition table 303 includes “goto_contents (i
ndex4) "is described. This script instructs switching to the content represented by the hyperlink with the index number “4”. Note that, for example, an instruction to sound a sound may be described by a script.

The hyperlink table 304 includes a content (Contents) designated for each index number.
Shows a hyperlink to the numbered content. For example, the index number “4” in the hyperlink table 304 indicates a hyperlink to the content with the content number “1”. The bitmap table 305 stores bitmap data (Bitmap Data) representing graphics information superimposed on image data of presentation information in the data receiving device 121 for each index number indicated as data in the object definition table 302. Is shown.

For example, index number “6” indicates bitmap data of “standard bitmap” of “button” of index number “0” of object definition table 302. FIG. 7 shows the file name “navi1.n
The navigation information 401 represented by “if” is shown. The navigation information 401 includes an object definition table 402, a handler definition table 403, and a bitmap table 4.
04.

In the row of the index number "0" of the object definition table 402, "-" is shown as the index number of the standard bitmap. This indicates that there is no standard state bitmap defined for this object. In the object definition table 402, only one object is defined, and the object with the index number "0" is always displayed in the selected state, so that the bitmap in the standard state is not required, so that the object is omitted.

The handler definition table 403 shows a script that is executed when the handler with the index number “3” is activated. The script with index number "3" is "goto_entry" indicating an instruction to switch to entry content. Here, the entry content refers to the content to be reproduced first when the reproduction of the interactive program is started.

The bitmap table 404 shows bitmap data of the index number "7". 1-2-1-3. Structure information storage unit 109 The structure information storage unit 109 stores a structure information table and entry information. The structure information table is information of a combination of presentation information and navigation information that constitute each content. The entry information refers to information indicating entry content.

As shown in FIG. 8, the structure information table 501 shows information of combinations of presentation information and navigation information constituting each content stored in the transmission data storage unit 102 for each content number. The content number is a number that uniquely identifies one content among a plurality of contents stored in the transmission data storage unit 102. As shown in FIG. 8, in the first row of the structure information table 501, the content identified by the content number 0 is stored in the presentation information storage unit 10
7, the file name still0. m2v and navi0.mv stored in the navigation information storage unit 108. It is shown that it is configured by a set with navigation information identified by nif. The same applies to other lines.

The entry information 502 shown in FIG.
This indicates that the content number of the entry content of the interactive program stored in the transmission data storage unit 102 is 5. 1-2-2. Multiplex Information Storage Unit 104 The multiple information storage unit 104 stores resource allocation information such as identifiers and bands for multiplexing transmission data stored in the transmission data storage unit 102 into the MPEG2 transport stream as a multiplex information table. I remember. FIG. 9 shows an example of the multiplex information table 601.

The bit rate (Bitrate) recorded in the first row of the multiplex information table 601 indicates the transmission rate assigned when multiplexing the transmission data stored in the transmission data storage unit 102 into the MPEG2 transport stream. Is shown. In this example, 6 Mbps is assigned as the transmission rate. Original_network_ in the second to fifth rows of the multiplex information table 601
id, transport_stream_id, se
When the interactive program stored in the transmission data storage unit 102 is multiplexed into the MPEG2 transport stream as an event, the identifier original_event and the event_id are the originals assigned to the event.
_Network_id, transport_str
eam_id, service_id, event_i
The respective values of d are shown. This multiplex information table 601
In this example, “0 × 0001” is allotted as these values, but usually, a unique value assigned to each service is written.

In a general satellite digital broadcasting system,
From one satellite (network), one or more MPEG2
The transport streams are transmitted using carriers of different bands. Each broadcast program is one of the MPEG
ETS 300 4 in two transport streams
Original_network_id, t based on the H.68 standard (hereinafter referred to as “DVB-SI standard”).
transport_stream_id, service
e_id and event_id are assigned and multiplexed.
original_network_id is an identifier for uniquely identifying a network. transport
t_stream_id is 1 in one network.
An identifier for uniquely identifying one transport stream. service_id is an identifier for uniquely identifying one service in one transport stream. event_id is an identifier for uniquely identifying one event in one service. The event is
It is a group of several components, and corresponds to one program in the conventional analog broadcasting.

The components are ISO / IEC 13
818-1 (hereinafter referred to as "MPEG2 system standard"), which is a stream (program element) identified by one PID (packet identifier),
Expresses one of the components of a program such as a moving image and a sound. A service is a group of a sequence of events and corresponds to one channel in the conventional analog broadcasting.

Programs (events) broadcast through a digital broadcasting system based on the DVB-SI standard include these original_network_id and tra.
nsport_stream_id, service_
By specifying a pair of id, event_id,
It can be uniquely specified in all digital broadcasting systems. original_network_id, t
transport_stream_id, service
For details on e_id and event_id, see DVB
-Described in the SI standard.

Lines 6 to 10 of the multiplex information table 601 are as follows:
When the application stored in the transmission data storage unit 102 is multiplexed as an event in the MPEG2 transport stream, the value of the PID assigned to each component configuring the event is shown. Note that PMT_PID and PCR_PID are respectively a PMT (Program Map Table),
PCR (Program Clock Reference)
It represents the value of the PID assigned to e).

NE_component_pid (navigation information component packet identifier) is stored in the navigation information storage unit 10 of the transmission data storage unit 102.
8 shows the value of the PID assigned to the component that multiplexes the navigation information stored in 8.
VE_information_component_
The pid (stream correspondence information component packet identifier) indicates a PID value assigned to a component that multiplexes the stream correspondence table generated by the stream correspondence information table generation unit 111 described later.

VE_component_pid (image data component identifier) indicates a value of a PID assigned to a component that multiplexes image data stored in the presentation information storage unit 107. Note that, in the present embodiment, NE_component
nt_pid, VE_information_com
component_pid, VE_component_p
Although only one PID is given as each id, a plurality of PIDs may be given. That is, NE_compo
“0x0082” is stored in the VE_inf
"0" for the operation_component_pid
× 0083 ”is given as a PID to VE_component_pid, and in addition to this, for example, NE_component
“0 × 0085” is set to VE_info in ent_pid.
"0x" is added to the operation_component_pid.
“0086” may be given as a PID to VE_component_pid, and “0 × 0087” may be given to the VE_component_pid.

Although not present in the present embodiment, when transmission data includes audio data, AE_info
motion_component_pid, AE_c
component_pid is assigned similarly to the image data. 1-2-3. Configuration of the data multiplexing unit 103 The data multiplexing unit 103 includes a multiplexing control unit 110 including a CPU and a memory, a stream correspondence information table generating unit 111, an identification information adding unit 112, a navigation information table generating unit 113, A multiplexing unit 114.

Data multiplexing section 103 performs the following processing to generate transmission data 165 shown in FIG. 1-2-3-1. Multiplexing Control Unit 110 (Part 1) When the multiplexing control unit 110 is activated by the transmitting unit 106, first, the multiplexing control unit 110 first stores the structure information table 501 and the multiplexed information table stored in the structure information storage unit 109 and the multiplexed information storage unit 104. With reference to 601, an identifier for uniquely identifying each content in digital broadcasting is assigned for each content number, and a content identifier assignment table is created.

FIG. 10 shows this content identifier assignment table 7.
01 shows an example. “Orig_nw_id” 703,
“Ts_id” 704 indicates the identifier values of the transport stream and the network to which the image data, audio data, and navigation information constituting the content are transmitted. “VE_svc_id” 705, “V
“E_event_id” 706 indicates the identifier value of the service and the event to which the image data belongs, respectively,
“VE_id” 709 indicates the value of an identifier that uniquely identifies image data in one event. Similarly, “NE_
svc_id ”707,“ NE_event_id ”7
08 represents the value of the identifier of the service and event to which the navigation information belongs, and “NE_id” 710 represents the value of the identifier that uniquely identifies the navigation information in one event. “AE_svc_id” 711, “A
“E_event_id” 712, “AE_id” 713
The same is true for Since the content is a set of image data, audio data, and navigation information, the content can be uniquely identified by each set of identifiers.

In the content identifier assignment table 701,
“Orig_nw” corresponding to each content number 702
_Id ”703,“ ts_id ”704,“ VE_sv ”
c_id ”705,“ VE_event_id ”706
The original_network_id of the multiplex information table 601 stored in the multiplex information storage unit 104,
transport_stream_id, service
Each value of ce_id and event_id is written. Similarly, “NE_svc_id” 707,
"NE_event_id" 708 is also sericic
Each value of e_id and event_id is written.

In this embodiment, “VE_id”
709 and “NE_id” 710 include the content number 7
The same value as 02 is given. “VE_id”
709, "NE_id" \ u710 is \ u content number 7
02 does not need to match,
It suffices that a different value is assigned to each piece of navigation information.

In the present embodiment, “AE_svc”
_Id ”711,“ AE_event_id ”712,
“AE_id” 713 is not assigned an identifier because there is no audio data in the content, and “−” is written. However, if audio data is included, it is allocated in the same manner as image data and navigation information. Multiplex control unit 110
When the creation of the content identifier assignment table 701 is completed,
"PID", "component_
A display image information identifier assignment table to which respective values of “tag” and “stream_id” are assigned is created. FIG. 11 is a diagram showing an example of the display image information identifier assignment table 801. In this display image information identifier assignment table 801,
“VE_id” 709 is assigned the value assigned in the identifier assignment table 701. The value (here, “0 × 0084”) assigned by “VE_component_pid” in the multiplex information table 601 is given to “PID” 803. The “component_tag” (component tag) 802 has the same value for one “PID” 803 (eg, the value “0 × 0” for the “component_tag” for the value “0 × 0084” of the “PID”)
0 "is assigned). "Stre
“am_id” 804 is expressed in hexadecimal notation from “e0” to “e”.
The value of “f” is sequentially and cyclically given corresponding to “VE_id” 709. The file name of the image data stored in the presentation information storage unit 107 identified by the “VE_id” 709 is the image data file 8
05 is written.

Note that VE_component_ in FIG.
When a plurality of identifiers are given to pid, "P
The “ID” and “stream_id” can be assigned, for example, as follows. In the order of "VE_id",
VE_component from multiplex information table to "PID"
_Pid is taken out and given, and "stream_i
"d" sequentially and cyclically gives values of "e0" to "ef" in hexadecimal notation. Each time the stream_id makes one cycle,
VE_component_pi new from multiplex information table
Take d and give it to "PID". New VE_co
When the component_pid is exhausted, the process returns to the initially provided VE_component_pid. "Comp
A different value is given to “onent_tag” for each “PID”.

In the present embodiment, it can be used as a value of stream_id for video data.
Although all 16 of “e0” to “ef” are used in hexadecimal notation, only a part of them may be used. Also, when there is audio data, the MPEG2 standard defines that stream_id uses 32 pieces of "c0" to "df" in hexadecimal notation.

Note that this "component_ta"
g "802 is used to indirectly refer to the PID. component_tag is a value freely assigned in a one-to-one correspondence with the PID.
The correspondence between _tag and PID is given in a PMT described later. From the navigation information and stream correspondence information, do not directly refer to the value of PID,
By indirectly referencing using the _tag, for example, even when the PID is rewritten to another value in the transmission unit 106 described later when multiplexing with another program, the navigation information and the stream correspondence information are changed. This has the effect of eliminating the need.

When the creation of the display image information identifier allocation table 801 is completed, the multiplex control unit 110 instructs the stream correspondence information table generation unit 111 to generate a stream correspondence table, and instructs the identifier information addition unit 112 to store the private image data. An instruction is given to add VE_id to the area, and the navigation information table generation unit 113 performs navigation.
Instruct to generate \ uinformation \ u table. 1-2-3-2. Identification Information Adding Unit 112 Upon receiving an instruction to add identifier information from the multiplexing control unit 110, the identifier information adding unit 112 reads out the image data stored in the presentation information storage unit 107. The image data identifier VE_id is written in the private area in the read image data bit stream.
Note that VE_id is acquired with reference to the display image information identifier assignment table 801 created by the multiplex control unit 110. A file name is assigned to the image data bit stream in which VE_id has been written, and stored in a storage area (not shown).

FIG. 12 shows a bit stream 901 as an example of image data having a file name "VE (5)" to which identifier information has been added. The bit stream 901 is an MPE
It is encoded based on the G2 standard, and the value of VE_id “0” is stored in the user data area 903 of the picture header 902.
× 0005 ”is recorded. Picture data area 9
04 records the still image data 201 shown in FIG. 5A. When the identifier information is added to all the image data, the completion of the addition is notified to the multiplex control unit 110.

In this embodiment, although the user data area in the picture header is used as the area for writing the VE_id, an area in which other private data can be written may be used. 1-2-3-3. Navigation information table generator 1
13. Upon receiving an instruction to generate a navigation information table from the multiplex control unit 110, the navigation information table generation unit 113 reads out the navigation information stored in the navigation information storage unit. When the read navigation information includes the hyperlink table, the navigation information table is generated by converting the information of the link destination indicated by the content number into the notation of each identifier with reference to the content identifier assignment table 701. When the hyperlink table is not included, the navigation information table is generated by changing only the file name without changing the original navigation information. The generated navigation information is stored in a storage area (not shown).

FIG. 13 shows the generated file name “NVT”.
(5) "of the navigation information table 1001. This navigation information table 1001 is generated from the navigation information of the file name “navi5.nif” shown in FIG. Navigation information table 1001
Are the object definition table 1002 and the handler definition table 1
003, a hyperlink table 1004, and a bitmap table 1005.

In the hyperlink table 1004, "-" is written in a column such as "orig_nw_id".
The absence of the identifier indicates that the recording is omitted because the identifier is the same between the link source and the link destination of the content. By omitting the recording, the storage area is reduced. If the link destination is another service, "VE_service_id",
"VE_event_id" or "NE_service
_Id ”and“ NE_event_id ”also describe each identifier. Here, the VE of index number “4” is used.
_Id and NE_id are each set to “0 × 0001”
Are VE_id and NE_id of index number “5”
Is described with reference to the content identifier allocation table 701.

FIG. 14 shows a navigation information table 1101 for the file name “NVT (1)”. This navigation information table 1101 stores the file name “na” shown in FIG.
vi1. nif ”is generated from the navigation information of“ nif ”, and there is no hyperlink table, so there is no change in the content. The navigation information table generation unit 113
When the generation of the navigation information table is completed, the generation completion is notified to the multiplex control unit 110. 1-2-3-4. Stream correspondence information table generator 1
11 When receiving an instruction to generate a stream correspondence table from the multiplexing control unit 110, the stream correspondence information table generation unit 111 refers to the display image information identifier assignment table 801 and generates a stream correspondence table for each image data. This stream correspondence table is used to extract one image data from a stream transmitted from the data transmitting apparatus 101 to the data receiving apparatus 121.

FIG. 15A shows a stream correspondence table “VET (5)” 1201 used for extracting the image data “VE (5)” on the data receiving apparatus 121 side. “First_pt” in the stream correspondence table 1201
"s" represents start reproduction time information representing the time at which the first frame of the corresponding image data is reproduced in units of 1 / 90,000 seconds, and can be obtained by using, for example, equation (1).

[0056]

(Equation 1)

Here, S_VE (x) is the image data VE stored in the storage area of the identifier information adding unit 112.
In accordance with the MPEG2 system standard (the same applies hereinafter), the size when converted into a transport stream packet, S_NVT (x), is obtained from the navigation information table NVT (x) stored in the storage area of the navigation information table generation unit 113. ) Is converted to a transport stream packet, and S_VET is the size when one stream correspondence table VET stored in the storage area of the stream correspondence information generation unit 111 is converted to a transport stream packet. The unit of the size is bits. R is a stream correspondence table V
Represents the number of times ET is repeatedly multiplexed, from "1" to "(P
× S) ”. Here, P is the number of PIDs assigned for the component transmitting the image data assigned by the multiplex information storage unit 104, and is “1” in the present embodiment. S represents the number of stream_id used in the display image identifier assignment table 801 and is “16” in the present embodiment. B is a bit rate, which is “6 Mbps” in the present embodiment.

Note that S_VE (x) is the size of VE (x), plus the size of the PES packet header and trailer information required for each PES packet unit, and the transport packet required for each transport packet unit. Determined by adding the size of the header and trailer information.
S_NVT (x) is obtained by adding the size of the section header and trailer information required for each section to the size of NVT (x), and further, the transport packet header and trailer information required for each transport packet unit. Add the size of S_VET is S
Similarly to _NVT (x), it is obtained by adding the size of the section header and the like to the size of VET. In this embodiment, the sizes of all the VETs are the same. Also, P
Details of the ES packet, the transport packet, and the section are defined in the MPEG2 system standard.

In the stream correspondence table 1201, "las"
“t_pts” indicates information on the end reproduction time indicating the time at which the last frame of the corresponding image data is reproduced in units of 1 / 90,000 seconds. In the present embodiment, since the image data is a still image, , “Last_pts” (end reproduction time information) and “first_pts” match.

Compon of the stream correspondence table 1201
ent_tag and stream_id are component_tag and stream assigned to the corresponding image data with reference to the display image information identifier assignment table 801.
Get the value of m_id. FIG. 15B shows a first stream correspondence table 1202 of image data, and FIG. 15C shows a fifteenth stream correspondence table 1203 of image data.

Note that these stream correspondence tables 120
1, 1202, 1203 "first_pts",
The time “0” serving as a reference of “last_pts” is the time when the data stored in the transmission data storage unit 102 is first multiplexed in the transport stream and transmitted. Also, in the present embodiment, the value of the assigned component_tag is described in the stream correspondence table with reference to the display image information identifier assignment table 801. VE_component
The value of t_pid may be directly described. 1-2-3-5. Multiplex Control Unit 110 (Part 2) Further, the multiplex control unit 110 includes an identifier information adding unit 112,
Upon receiving notification from the navigation information table generation unit 113 and the stream correspondence information table generation unit 111 that the respective processes have been completed, the number of contents T in the repetition unit is determined. Here, the number of contents T in the repetition unit is simply the transmission data 165 shown in FIG.
Is the sum of the total number M of contents and the number of dummy contents. More precisely, the total number M of contents stored in the transmission data storage unit 102 is M
≦ P × S × n = T. Here, P represents the number of PIDs assigned to components for transmitting image data in the multiplexed information storage unit 104, as described in the above equation (1), and S represents that described in the above equation (1). Similarly, it indicates the number of stream_id. n is M ≦
It is the smallest integer that satisfies T. In the present embodiment, P
= 1, S = 16, M = 63, so T is 64. If the number T of contents in the repetition unit is larger than the total number M of contents, the multiplexing control unit 110 multiplexes all contents in the transport stream, and then multiplexes the minimum contents (TM) or more. The null packets of the size are multiplexed. As a result, it is ensured that the interval D between the image data and the multiplexing position of the stream correspondence table corresponding to the image data is equal to or more than a certain value (more than (P × S−1) times the minimum content size). Can be.

Next, the multiplexing control unit 110 stores a null packet having a length L corresponding to one round of the number T of contents in the repetition unit (all contents and contents (TM) in the multiplexing information storage unit 104). The length of the transport stream when multiplexing at the set bit rate B is 90
(A value expressed in units of one thousandth of a second)) is calculated using equation (2).

[0063]

(Equation 2)

Here, M and T are the total number of contents and the number of contents in the repetition unit, respectively, and S_VE
(X), S_NVT (x), S_VET, P, and B are the same as described in the above equation (1). The multiplexing control unit 110 sets “0” in the content counter i and sets “0” in the multiplexing start position pointer wp. The value of wp represents the time from the first information position of the content multiplexed on the transport stream.

Next, "0" is set to the value of the VET counter j. The number of turns C and the content number N are obtained using the value of the VET counter j. The number of turns C is ｛i + (P × S)
The content number N is the remainder of {i + (P × S) -1-j} T. Next, it is determined whether or not the N-th VET (N) in the stream correspondence table is stored in the stream correspondence information table generation unit 111. A value obtained by multiplying the length L of one round of the number of contents T by the number of rounds C is added.

Next, the multiplexing of VET (N) is performed by the multiplexing unit 1
Instruct 14. At this time, the multiplexing start position wp and the bit rate B are notified, and “VE_inf” in the multiplexing information table 601 is notified.
notification of the “operation_component_pid” as the PID, and the content identifier allocation table 701.
The value of “VE_id” corresponding to the content number “N” is notified as table_id_extension.

When VET (N) is not stored in the stream correspondence information table generation unit 111, S_VE
The multiplexing unit 114 is instructed to multiplex null packets of the size of T, and notifies the multiplexing start position wp and the bit rate B. After instructing the multiplexing unit 114 to perform multiplexing, a multiplexing start position wp is calculated. It can be calculated by wp = wp + S_VET / B. Next, “1” is added to the value of the VET counter j,
It is determined whether or not the values of the VET counter j and the number of times of repetition multiplexing R of the stream correspondence table coincide with each other.
The multiplexing process of VET (N) is continued.

If the multiplex control unit 110 determines that the values of both counters match, the multiplex control unit 110 calculates the number of turns C and the content number N in the same manner as described above, and
It is determined whether the content of content number N is stored in 12 or the navigation information table generation unit 113. When it is determined that it is stored, the multiplexing unit 114 is instructed to multiplex VE (N). At this time, the multiplexing start position wp, bit rate Bv (N), PID, str
The value of “eam_id” is notified to the multiplexing unit 114. In addition,
From the display image information identifier assignment table 801, the values of the PID and the stream_id are “PID” and “stream” assigned to the image data whose “VE_id” value is “N”.
_Id ”is taken out. The bit rate Bv (N) is
It is calculated by the following equation (3).

[0069]

(Equation 3)

The symbols in the formula are the same as in the above formula (1).
Further, it instructs the multiplexing unit 114 to multiplex NVT (N). At this time, the multiplex start position wp,
(N), PID, table_id_extension
The value of n is notified to the multiplexer 114. As for the PID, the value of the PID assigned to the component assigned for transmitting the navigation information is extracted with reference to the multiplex information storage unit 104. table_id_ex
Regarding the tension, “NE_i” corresponding to the content number N from the content identifier assignment table 701
Take out the value of "d". The bit rate Bn (N) is calculated by the following equation (4).

[0071]

(Equation 4)

The symbols in the formula are the same as in the above formula (3).
Next, the multiplexing control unit 110 calculates the multiplexing start position wp by the calculation formula wp = wp + {S_VE (N) + S_NVT (N)} /
Calculate with B. Further, the multiplex control unit 110 controls the content N
Is not stored, S_VE (0) + S
It instructs the multiplexing unit 114 to multiplex null packets of the size of _NVT (0), and notifies the multiplexing start position wp.

The size of the null packet to be multiplexed is determined by the contents of S_VE (0) and S_NVT of content number “0”.
S_VE (k) + S_NVT, which is the total size with (0) but has the smallest size in all contents
(K) null packets may be multiplexed.
Next, the multiplexing control unit 110 calculates the multiplexing start position wp by the calculation formula w
p = wp + {S_VE (0) + S_NVT (0)} / B
Ask for.

Next, “1” is added to the value of the content counter i, and the value of the VET counter j is obtained again.
The processing after the multiplexing of (N) is repeated. 1-2-3-6. Multiplexing Unit 114 Multiplexing unit 114 converts transmission data 165 shown in FIG.
Multiplex into PEG2 transport stream. FIG.
6 and FIG. 17 are schematic diagrams of more specific multiplexed streams obtained by adding identification information to the schematic diagram shown in FIG. Less than,
The details will be described.

The multiplexing unit 114 multiplexes data into an MPEG2 transport stream based on an instruction from the multiplexing control unit 110 based on a method specified by the MPEG2 system standard. Upon receiving an instruction to multiplex the stream correspondence table VET (N) from the multiplex control unit 110, the stream correspondence table VET (N) is read from the stream correspondence information table generation unit 111, and the designated multiplex start position w
PID specified by p, table_id_exte
multiplex into the transport stream using nsion and bit rate B. When receiving an instruction to multiplex the image data VE (N) from the multiplexing control unit 110, the corresponding image data to which the identifier has been added is read from the identifier information adding unit 112, and the PID specified from the specified multiplexing start position wp , Stream_id, bit rate Bv
(N) is used to multiplex in the transport stream. When multiplexing of the navigation information table NVT (N) is instructed from the multiplexing control unit 110, the navigation information table is read from the navigation information table generating unit 113, and the P is designated from the designated multiplexing start position wp.
Multiplex in the transport stream using ID, table_id_extension, and bit rate Bn (N). When multiplexing of null packets is instructed, null packets of a specified size are multiplexed at a specified bit rate B from a specified multiplexing start position wp.

Further, the PCR is multiplexed using the PCR_PID notified from the multiplexing control unit 110, with the initial value at the head of the generated transport stream being “0”. FIG. 16 is a diagram illustrating an example of a transport stream generated by the multiplexing unit 114. In the transport stream 1701, 63 contents stored in the transmission data storage unit 102 are multiplexed. 63 pieces of image data VE (0) to VE
In (62), the value “0 × 0084” given in the multiplex information table 601 is given as the PID.
“0xe0” to “0xef” are cyclically given and multiplexed as m_id.

The stream correspondence table VET (N) has the value “0” given in the multiplex information table 601 as the PID.
× 0083 ”is given and table_id_e
xtension, the image data identifier "VE_i
d ". Stream correspondence table V
ET (N) is multiplexed once for each image data VE (N). The number of repetition multiplexing R in the stream correspondence table is “1”.

In addition, 63 navigation information tables NE
(0) to NE (62) are multiplexed information tables 60 as PIDs.
The value “0 × 0082” given by 1 is given,
The value of the navigation information identifier “NE_id” is given as table_id_extension and multiplexed. The PCR 170 including the time reference information
2 are multiplexed.

One transmission data 165 shown in FIG.
In this figure, the range from the stream correspondence table VET (15) to the null packet 1705 is indicated by an arrow 1708. In the transport stream 1701, the stream correspondence table VET (N) is multiplexed at a position 15 image data earlier than the corresponding image data VE (N). The image data contains 16 stream_
Since id is given cyclically, another image data having the same PID and stream_id as VE (N) is multiplexed between the stream correspondence table VET (N) and the corresponding image data VE (N). Not done. Therefore, after acquiring the stream correspondence table VET (N), the receiving apparatus 121 separates only the first one of a plurality of pieces of image data to which the same PID and stream_id are given, thereby obtaining a desired image. Data VE (N) can be extracted. For example, the stream correspondence table VET
(16) 1703 and image data VE (16) 1704
, “PID“ 0 × 0084 ”, stream_i
d There is no other image data given “0xe0”. Therefore, the receiving apparatus 121 sets the PID “0 × 008
4 ", four image data having stream_id" 0xe0 ", VE (0), VE (16), VE (3
2) Out of VE (48), stream correspondence table VET
(16) Image data V appearing first after 1703
By separating E (16), the desired image data VE
(16) can be reproduced.

The transport stream 1701
Is the stream correspondence table VET (N) and the corresponding VE
During (N), data of 15 contents is multiplexed. That is, after the appearance of the stream correspondence table VET (N), the corresponding image data V
The time D until E (N) appears is guaranteed to be at least equal to or longer than the time required to transmit at least 15 contents of the minimum size. If the receiving device 121 interprets the information in the stream correspondence table during the time D and performs a process necessary for separating the image data, the receiving device 121 can surely reproduce the desired image data. In order to guarantee that the time D is equal to or longer than the transmission time of the 15 contents even near the repetition lap point, the content 1 is added at the end of the lap.
Null packets 1705 of two sizes are multiplexed. Thus, when the signal crosses a circuit point between VET (N) and VE (N), for example, VET (0) 1706 and V (N)
The interval of E (0) 1707 is also the minimum size of content 1
It is guaranteed to be longer than the time required to transmit five.

FIG. 17 is a diagram showing an example of a transport stream generated by the multiplexing unit 114 when the number of repetition multiplexing R in the stream correspondence table is set to “16”. In the transport stream 1711, the stream correspondence table VET (N) stores the corresponding image data VE.
VE (N) from the position 15 contents before (N)
Are multiplexed 16 times before the multiplexing start position. The receiving device 121 first obtains the stream correspondence table, and then reproduces the corresponding image data. Therefore, the shorter the time D is, the more quickly the desired image data can be reproduced. However, when the time D becomes short, the receiving device 121 must interpret the stream correspondence table at a higher speed and perform processing necessary for separating the image data. If the stream correspondence table is multiplexed a plurality of times as in the transport stream 1711, the receiving apparatus 121 acquires the stream correspondence table multiplexed at a position close to the image data and loads the image data at high speed when the load is light. When the reproduction is heavy and the load is heavy, it is possible to perform control such that the stream correspondence table multiplexed at a position far from the image data is obtained and the image data is surely reproduced.

The multiplexing unit 114 generates a transport stream 1701 as shown in FIG.
Output to transmitting section 106. 1-2-4. System Information Table Generating Unit 105 The system information table generating unit 105 is NIT (Network Information) which is program specification information used by the data receiving apparatus 121 for program selection.
Table), EIT (Event Informa)
Tion Table), SDT (Service D)
description Table), PAT (Pro
A program association table (PGM) and a program map table (PMT) are generated with reference to the multiplex information storage unit 104 and the like.

Upon receiving the notification from the multiplexing control unit 110, the system information table generating unit 105 first refers to the multiplexing information storage unit 104, and the data reception device 121 NIT, EIT, SD containing information necessary for selection
T and PAT are generated in accordance with the DVB-SI standard and the MPEG2 system standard.

The NIT records, for each transport stream transmitted from a network identified by a specific network, physical information on a transmission path and the like. FIG. 18A shows the system information table generator 10.
5 shows an example of the NIT 1301 generated in FIG. n
network_id is a network identified by “0 × 0001”, and original_network_i
d is “0 × 0001”, transport_stree
It indicates that a transport stream whose am_id is identified by “0 × 0001” is being transmitted, and the specification regarding the frequency and the modulation method is represented by “transmission specification”.

The SDT records information such as a service name for each service included in a specific transport stream. FIG. 18B illustrates an example of the SDT 1302 generated by the system information table generation unit 105. When the transport_stream_id is “0”
In the transport stream identified by “× 0001”, a service whose service_id is identified by “0 × 0001” is included, and information such as the service name is represented by “information such as service name”. It is shown that.

[0086] The EIT records, for each event included in a specific service, information on the event name, start time, end time, and the like. FIG. 18C shows an EIT 1303 generated by the system information table generation unit 105.
An example is shown. If service_id is "0x0
001 ”in the service identified by event_id
Indicates that an event identified by “0 × 0001” is included, and information such as the event name is represented by “information such as event name”.

The PAT records PID information of a PMT (program map table) for each program included in a specific transport stream. FIG.
Is the P generated by the system information table generator 105.
An example of the AT 1401 is shown. transport
_Stream_id is included in the transport stream identified by “0 × 0001”.
Contains a program with “0x0001” and its PMT
PID is “0 × 0080”.
The program_no matches the service_id, and the program corresponds to an event.

Next, the system information table generator 105
Refers to the multiplex information storage unit 104, the multiplex control unit 110, and the structure information storage unit 109, and
Generates a PMT corresponding to the program in which the transmission data stored in the storage device is multiplexed in accordance with the MPEG2 system standard. FIG. 20 illustrates an example of the PMT generated by the system information table generation unit 105. "Pr
"program_number" is a value indicating the program number of the program in which the transmission data is multiplexed, and the value "0x0001" of "service_id" in the multiplex information table 601 is extracted and written.

“PCR_PID” is a value indicating the PID of a packet including clock information (PCR) which is a reference when decoding this program, and includes the value “0” of “PCR_PID” in the multiplex information table 601. × 0081 ”
Is fetched and written. "Entry_Desc
The “scriptor” is a descriptor including information of an identifier of an entry content to be reproduced first when this program is selected. FIG. 21A shows “Entry_
“Descriptor”. desc
The descriptor_tag is an identifier indicating the type of the descriptor, and includes “Entry_Descriptor”.
The value specified for “or” (here, 0 × 98) is written.

"Entry_VE_id", "entr
“y_AE_id” and “entry_NE_id” indicate values of identifiers for identifying image data, audio data, and navigation information constituting the entry content. The content number "5" of the entry content is obtained by referring to the entry information 502 of the structure information storage unit 109, and the "VE_id" corresponding to the content number "5" is obtained by referring to the identifier assignment table 701 of the multiplex control unit 110. Value of "0x000
5 ”and“ AE_id ”value“ − ”and“ NE_id ”value“ 0 × 0005 ”are extracted, and“ entry_
VE_id "," entry_AE_id "," ent
ry_NE_id ".

The list 1502 in the PMT 1501 contains a P identifying each component constituting this program.
An ID value “PID”, “stream_type” indicating the type of data transmitted by each component, and information on a descriptor associated with each component are shown. First, the system information table generation unit 105
Regarding the component for transmitting the navigation information, "NE_component" is obtained from the multiplex information table 601.
_Pid ”is extracted and written as“ PID ”, and a value“ 0 × 05 ”indicating that the type of data transmitted by this component is section data is written as“ stream_type ”, NE_Component_Des indicating that this component transmits navigation information
Write the descriptor as "descriptor". NE_Component_D
An example of the script is shown in FIG. 21B. desc
"NE_Componen" is included in the descriptor_tag.
A value (0x99 in this case) defined for "t_Descriptor" is written.

Next, regarding the component for transmitting the stream correspondence table, “VE_in
The value “0 × 0083” corresponding to “information_component_pid” is extracted and written as “PID”, and the value “0 × 0” indicating that the type of data transmitted by this component is section data
5 is written as "stream_type", and VE_Information_Componen indicating that this component transmits a stream correspondence table.
t_Descriptor is set to "descriptor"
Write as FIG. 21C shows VE_Informat.
An example of an ion_Component_Descriptor is shown. "Descriptor_tag" contains "VE_Information_Component"
A value (here, 0 × 9a) defined for “_Descriptor” is written.

Next, the system information table generator 105
Indicates “VE_component_pi” from the multiplex information table 601 for the component that transmits image data.
d ”and the value“ 0 × 0084 ”corresponding to“ PI
D ”, a value“ 0 × 02 ”indicating that the type of data transmitted by this component is a video stream is written as“ stream_type ”, and a stream_identifier_descr representing the value of the component tag of this component.
Write "ipscriptor" as "descriptor". FIG. 21D shows a stream_identifier.
_Descriptor is shown as an example. "Descri
ptor_tag ”contains the stream_identity
A value (here, 0 × 52) defined for “fire_descriptor” is written. "Compon
In “ent_tag”, “PID” is “0 ×” with reference to the display image information identifier
Compo assigned to the component "0084"
The value “0 × 00” of the nong_tag is extracted and written. 1-2-5. Transmission Unit 106 The transmission unit 106 has a scheduler, and activates the multiplex control unit 110 when a predetermined time, for example, 5 minutes before the transmission start time of the event, is reached. When the event transmission start time comes, the transport stream output by the multiplexing unit 112 includes the system information tables such as NIT, PAT, PMT, SDT, and EIT generated by the system information table generation unit 105 according to the DVB-SI standard. In accordance with the rules of the MPEG2 system standard, the data is repeatedly multiplexed at a predetermined interval using a predetermined PID, subjected to processing such as modulation, and transmitted to the data receiving device 121 and the like.

FIG. 22 is a diagram schematically showing a multiplexed transport stream 1801. Transport stream 17 multiplexed by multiplexing section 114
01, NIT1802, PAT1803, PMT
1804, SDT 1805, and EIT 1806 are multiplexed. 1-2-6. Operation of Data Transmitting Apparatus 101 Next, the operation of the data transmitting apparatus 101 according to the present embodiment will be described with reference to the flowcharts shown in FIG. 23, FIG. 24, and FIG.

First, the multiplex control unit 110 creates an identifier assignment table by assigning VE_id and NE_id to each content number (S1902). Next, a display image information identifier allocation table 801 is created (S1904), the identifier information is added to the identifier information adding unit 112, the navigation information table is created by the navigation information table creating unit 113, and the stream correspondence information table generating unit is created. 111 is instructed to generate a stream correspondence table.

The identifier information adding section 112 adds an image data identifier to the private area of the bit stream of the image data stored in the presentation information storage section 107 and stores it. When the addition of the identifiers for all the image data is completed, the multiplexing control unit 110 is notified of the addition (S1906). The navigation information table generation unit 113 creates a navigation information table from the navigation information stored in the navigation information storage unit 108. When the creation of all the navigation information tables is completed, the fact is notified to the multiplex control unit 110 (S19).
08).

Stream correspondence information table generator 111
Generates a stream correspondence table with reference to the display image information identifier assignment table 801 created by the multiplex control unit 110. When the generation of all the stream correspondence tables is completed, the fact is notified to the multiplex control unit 110 (S1910). The system information table generation unit 105 includes NIT, SDT, EIT,
Various system information tables such as PAT and PMT are generated (S1912).

The multiplexing control unit 110 determines the number T of contents in the repetition unit when multiplexing the contents into the transport stream (S1914). Number of contents T
Length L (all contents and content M-
The multiplexed information storage unit 104 stores the null packets of T sizes.
(The length of the transport stream when multiplexing is performed at the bit rate B), which is stored in (1). The multiplex control unit 110
The multiplexing unit 114 is notified of the CR_PID, and instructs multiplexing of the PCR (S1918). Next, “0” is set to both the content counter i and the multiplexing start position wp (S2002).

Next, the multiplex control unit 110 sets “0” to the VET counter j (2004). The number of turns C and the content number N are obtained. C is Δi + (P × S) −1−
The quotient (integer part) of j｝ ÷ T, and N is the remainder (integer) (S2006). Next, the multiplex control unit 110
Determines whether or not VET (N) of the stream correspondence table is stored in the storage area of the stream correspondence information table generation unit 111 (S2008). If it is stored, first_pts and last_pts of VET (N) are determined.
Is added to the data (S2010).

The multiplexing control unit 110 instructs the multiplexing unit 114 to multiplex the stream correspondence table VET (N) into the transport stream, and starts the multiplexing start position wp, bit rate B, PID, table_id_extens.
is notified (S2012), and the process moves to S2014. S
In 2008, when the multiplexing control unit 110 determines that VET (N) in the stream correspondence table is not stored, the multiplexing control unit 110 instructs the multiplexing unit 114 to multiplex null packets of the same size as S_VET, and also starts multiplexing. The position wp and the bit rate B are notified. The multiplexing unit 114 multiplexes the null packet into the transport stream (S201
8) The process moves to S2014.

In S2014, the multiplex control unit 110
Calculates wp = wp + {S_VET / B}, and calculates VET
“1” is added to the value of the counter j (S2015), and VET
The value of the counter j is compared with the value of the number of repetition times R of the stream correspondence table VET (N) (S2016). j =
If R, go to S2102; if j <R, go to S200.
Return to 6.

At S2102, multiplex control section 110
Is the number of revolutions C as the quotient of i / T (integer part) and the content number N as the remainder of i / T (integer). Next, it is determined with reference to the content identifier assignment table in the structure information storage unit 109 whether or not there is a content of the content number N (S
2104) In some cases, the multiplexing unit 114 is instructed to multiplex the bit stream of the image data VE (N). At this time, the bit rate Bv (N) is calculated, and the multiplexing unit 114 is notified of the Bv (N) together with the multiplexing start position wp and the values of “PID” and “stream_id” recorded in the display image information identifier assignment table 801. . The multiplexing unit 114 multiplexes the image data VE (N) on the transport stream (S2106).

Next, multiplexing control section 110 instructs multiplexing section 114 to multiplex navigation information table NVT (N). At this time, the bit rate Bn (N) is calculated and Bn (N) is calculated.
(N) is set to the multiplex start position wp, PID, table_id.
Notify the multiplexing unit 114 together with _extension. The multiplexing unit 114 multiplexes the navigation information table NVT (N) on the transport stream (S210).
8).

The multiplexing control section 110 calculates a multiplexing start position wp. wp = wp + {S_VE (N) + S_NVT (N)} /
B (S2110). "1" is added to the content counter i (S211).
2) Return to S2004. If it is determined in S2104 that there is no data, the multiplexing control unit 110 determines that S_VE
Instruct multiplexing of null packets of the size of (0) + S_NVT (0) together with the multiplexing start position wp and the bit rate B. The multiplexing unit 114 multiplexes the specified amount of null packets into the transport stream (S2114).

The multiplexing control unit 110 calculates the multiplexing start position wp
, Wp = wp + ｛S_VE (0) + S_NVT
(0)｝ / B is obtained (S2116), and the flow proceeds to S2112. By the above operation, for example, when the number of repetition multiplexing R of the stream correspondence table VET (N) is set to “1”, the multiplexed stream as shown in FIG. NIT in the multiplexed stream as shown, and transmits the transport stream as shown in FIG. 22 obtained by multiplexing the P AT and the like. 1-2-7. Conclusion As described above, the data transmission device 1 of the present embodiment
01 is image data constituting each content,
And navigation information with an identifier assigned thereto, multiplexed in a transport stream, and repeatedly transmitted.

The navigation information includes an identifier of the image data of the hyperlinked content, an identifier of the navigation information, auxiliary screen information for displaying a menu or the like, and a script for screen switching and the like.
Therefore, the receiving device 121 can extract and reproduce any content by designating the identifier from the transport stream according to the navigation information, and can realize interactivity in a one-way communication path. 1-2-8. Others 1-2-8-1. In the present embodiment, the case where the image data is a still image has been described, but the image data may be moving image data. When the image data is moving image data, “first_pts” and “last_pts” in Expression (1) are used.
pts ”, the stream length L in equation (2), the bit rate Bv (N) to be assigned to the image data VE (N) in equation (3), and the navigation information in equation (4). Bit rate Bn assigned to table NVT (N)
The formula for calculating (N) and the formula for recalculating the multiplexing start position wp after multiplexing the image data VE (N) and the navigation information table NVT (N) by the multiplexing control unit 110 are changed as follows, for example. This can be achieved by:

In the case of a moving image, the bit rate Bv (N) to be assigned to the image data VE (N) is calculated by taking into account the increment when converting the video data into a transport stream based on a bit rate predetermined by the video elementary stream. decide. Navigation information table NVT
(N) shows the image data VE from the entire bit rate B.
The remainder obtained by subtracting the bit rate Bv (N) to be assigned to (N) can be assigned.

At this time, “fi” of the image data VE (N) is
The value of “rst_pts” can be calculated according to equation (5).

[0109]

(Equation 5)

However, Bv (x) is the image data VE (x)
The bit rate assigned to S_VE_FIRS
T (x) is the size when the first frame of the image data VE (x) is converted into a transport stream according to the MPEG2 system standard, MAX {A, B}.
Represents the larger value of A and B, respectively.

In the case of a moving image, “last_pts” is
It does not match "first_pts" and can be obtained, for example, by equation (6).

[0112]

(Equation 6)

Here, N_FRAME (X) is the number of frames of the moving image data VE (X), and FRAME_PER_SEC
Represents the number of frames per second (for example, 29.97 in the case of the NTSC system). At this time, in the case of a moving image, the multiplexing control unit 110 instructs the multiplexing unit 114 to multiplex VE (X) and NE (X), and then updates wp according to Expression (7).

[0114]

(Equation 7)

1-2-8-2. In the data transmitting apparatus 101, the multiplexing unit 114
Thus, the transport stream 1701 is sequentially generated during the transmission time of the event, but the multiplexing unit 114 generates and stores a transport stream of one cycle length L, and stores the transport stream in the transmission unit. 10
When the data stream 6 is transmitted to the data receiving apparatus 121 or the like, the transport stream may be repeatedly read, subjected to a predetermined process, and repeatedly transmitted. 1-2-8-3. In the present embodiment, but by multiplexing the corresponding image data and navigation information table in the same time, not necessarily the same time. As described above, the navigation information table and the image data corresponding to the navigation information table can be separately separated from each other, and thus may be multiplexed at different times. 1-3. Data Receiving Apparatus 121 As described with reference to FIG. 1, the data receiving apparatus 121 interactively extracts and reproduces content from an MPEG-2 transport stream transmitted from the data transmitting apparatus 101 according to a user operation. 1-3-1. Receiving unit 122 The receiving unit 122 is configured to store the MPEG2 corresponding to the identifier of the transport stream specified by the receiving control unit 126.
Upon receiving the transport stream, the TS decoder 1
23. 1-3-2. TS decoder unit 123 The TS decoder unit 123 includes a filter condition storage unit 1 that stores a filter condition set by the reception control unit 126.
31 according to the filter condition.
From the transport stream output from the video stream or only the audio data having the specified identifier, and outputs the separated data to the AV decoder unit 124. Also, it separates the table data having the specified identifier and outputs it to an area secured in the received data storage unit 125 according to the identifier. Further, it separates the PCR (reference clock information) of the specified identifier and outputs it to the AV decoder unit 124. Further, the filter condition storage unit 131 can simultaneously store a plurality of filter conditions, and the TS decoder unit 123 can perform a plurality of separation processes in parallel.

FIGS. 26A and 26B are diagrams showing an example of the filter condition table stored in the filter condition storage section 131. FIG. Each row of the filter condition table 2201 indicates one filter condition. "Filter identification number" column 2
In 202, a number for identifying each filter condition is described. A “START / STOP” column 2203 includes “START” when each filter condition is to be started.
However, when a stop state is set, “STOP” is set. The TS decoder unit 123 performs separation processing based on the filter condition in the start state, and does not perform separation based on the filter condition in the stop state. In the “PID” column 2204, the value of the PID of the data separated under each filter condition is set. A “stream_id” column 2205 includes a stream_id of data separated under each filter condition.
The value of id is set. "Table_id_ex
The “tension” column 2206 includes table_id_extension of data separated under each filter condition.
Is set. “PID” column 2204, “st
"ream_id" column 2205, "table_id_e
When the value “−” is set in the “xtension” column 2206, it indicates that there is no condition, that is, separation is performed regardless of the value of the identifier. "Output destination" column 2
In 207, an output destination for outputting separated data is set.

The row corresponding to the filter identification number “0” in the filter condition table 2201 indicates the filter condition of the image data. In the “output destination” column 2207, the AV decoder unit 124 is set, and “table_id_ex” is set.
“tension” 2206 cannot be set.
“PID” 2204 and “stream_id” 220
5, the value of the PID of the image data to be separated by the reception control unit 126 and the value of stream_id are set.

The row corresponding to the filter identification number “1” is
9 shows filter conditions for audio data. In the “output destination” column 2207, the AV decoder unit 124 is set, and in the “table_id_extension” column 22
No value can be set in 06. In the “PID” column 2204 and the “stream_id” column 2205, the PID of audio data to be separated by the reception control unit 126 and the values of stream_id are set.

The line corresponding to the filter identification number “2” is
The filter conditions of the stream correspondence table VET are shown.
In the “output destination” 2207, a stream correspondence information table storage unit 132 is set, and “stream_id” is set.
No value can be set in the column 2205. "PI
D "column 2204 and" table_id_extens "
In the “ion” column 2206, the PID of the stream correspondence table to be separated by the reception control unit 126 and the table_
The value of id_extension is set.

The row corresponding to the filter identification number “3” is
9 shows filter conditions of a navigation information table.
In the “output destination” column 2207, the navigation information table storage unit 133 is set, and “stream_i” is set.
No value can be set in the "d" column 2205. "P
ID ”column 2204 and“ table_id_exten ”
“sion” column 2206 includes the PID of the navigation information table to be separated by the reception control unit 126, and tab
A value of le_id_extension is set.

Further, “START / S” of each filter condition
The “TOP” column 2203 contains “START” or “ST”
“OP” is set by the reception control unit 126, and the separation processing of the TS decoder unit 123 is set to a start state or a stop state. The filter condition storage unit 131 stores NIT, SDT, EIT, PAT, PMT
And a filter condition (not shown) for PCR (reference clock information).

In the filter condition table 2201, the filter condition of the image data corresponding to the filter identification number “0” and the filter condition of the audio data corresponding to the filter identification number “1” are set to the stop state by the reception control unit 126. At this time, the TS decoder unit 123 does not separate the image data and the audio data. Also,
In the filter condition table 2201, the filter condition of the stream correspondence table VET corresponding to the filter identification number “2” is such that the value of “PID” is “0” by the reception control unit 126.
x0083 "," table_id_extension "
on ”is set to“ 0x0005 ”and ST
The ART / STOP column 2203 is set to a start state. At this time, the TS decoder unit 123
The stream correspondence table VET (5) corresponding to the set filter condition is separated from the transport stream 1801 shown in FIG.
Notify 6. The contents of VET (5) are as shown in FIG. 15A.

Further, in the filter condition table 2201,
As for the filter condition of the navigation information table NVT corresponding to the filter identification number “3”, the reception control unit 126 sets the value of “PID” to “0x0084” and “tabl”.
The value of "e_id_extension" is "0x000
5 ”is set in the START / STOP column 220
3 is set to the start state. At this time, the TS decoder unit 123 transmits the navigation information table NVT according to the filter condition set from the transport stream 1801 shown in FIG.
(5) is separated and the navigation information table storage unit 1
33, and notifies the reception control unit 126. The contents of the navigation information table NVT (5) are as shown in FIG.

In the filter condition table 2208,
As for the filter condition of the image data corresponding to the filter identification number “0”, the reception control unit 126 sets “PID” to “0x0084” and “stream_id” to “0xe”.
5 ", which is the start state. At this time, the TS decoder unit 123 transmits the transport stream 180 shown in FIG.
1, image data VE (5), image data VE (21), and image data V according to the set filter condition.
E (37) and the image data VE (53) are separated in the order received, and output to the AV decoder unit 124. Which image data of the four image data is separated first depends on the timing at which the reception control unit 126 sets the filter condition to the start state. Also, the reception control unit 1
By setting the filter condition to the stop state at an appropriate timing, the filter 26 can separate only the first one of the four image data and output it to the AV decoder unit 124. 1-3-3. AV decoder unit 124 The AV decoder unit 124 has a clock unit (not shown). This clock section is set to a correct reference time by the value of PCR (reference clock information) output from the TS decoder section 123, and counts a reference time for decoding image data and audio data while synchronizing correctly. I do.

When the AV decoder 124 receives the image data and / or the audio data output from the TS decoder 123, the AV decoder 124 first receives the image data and / or the audio data.
According to the instruction of No. 6, the identifiers of the image data and the audio data written in the private area are read out and notified to the reception control unit 126. Next, according to the instruction of the reception control unit 126, the image data and the audio data are decoded for each decoding unit, and the reproduction unit 128 decodes the data while synchronizing with the clock unit.
And notifies the reception control unit 126 of the completion of the decoding. 1-3-4. Configuration of Reception Data Storage Unit 125 The reception data storage unit 125 includes, for example, a RAM, and includes a stream correspondence information table storage unit 132, a navigation information table storage unit 133, and a system information table storage unit 134.

Stream correspondence information table storage section 132
Stores the stream correspondence table separated by the TS decoder unit 123. The navigation information table storage unit 133 stores the navigation information table separated by the TS decoder unit 123. The system information table storage unit 134 stores the NI separated by the TS decoder unit 123.
System information tables such as T, SDT, EIT, PAT, and PMT are stored. 1-3-5. Signal receiving unit 127 The signal receiving unit 127 receives a signal such as a user's remote control operation and the like, and notifies the reception control unit 126. 1-3-6. Playback Unit 128 The playback unit 128 superimposes the graphics data included in the navigation information table output from the reception control unit 126 on the image data decoded by the AV decoder unit 124 according to the instruction from the reception control unit 126. In addition, the audio data is output to the display unit 129, and the audio data decoded by the AV decoder unit 124 is output to the audio output unit 130. 1-3-7. Display Unit 129 The display unit 129 is realized by a CRT, a liquid crystal display, or the like, and displays an image output from the reproduction unit 128. FIG.
The contents 151, 152, 153, etc. indicated by are displayed. 1-3-8. Audio output unit 130 The audio output unit 130 is realized by a speaker or the like, and outputs audio output from the reproduction unit 128. 1-3-9. Configuration 126 of Reception Control Unit The reception control unit 126 controls the reception unit 122 to receive a desired transport stream. When a user operation signal is received via the signal receiving unit 127, the navigation information table currently stored in the navigation information table storage unit 133 is referred to, and a filter condition of the navigation information table to be separated next and an image The filter conditions of the stream correspondence table for acquiring data are set in the filter condition storage unit 131 of the TS decoder unit 123.
The filter condition of the image data is set in the filter condition storage unit 131 with reference to the stream correspondence table separated in the TS decoder unit 123 and stored in the stream correspondence information table storage unit 132.

[0127] The reception control unit 126 includes the TS decoder unit 12
It is determined whether the image data separated by step 3 is appropriate image data with reference to the image data identifier written in the private area of the image data. If the image data is appropriate, it is decoded by the AV decoder unit 124 and output to the reproducing unit 128. If the image data is not appropriate, the condition of the filter condition storage unit 131 is changed, and the separation of the stream correspondence table is instructed again.

The bit map data of the object included in the navigation information table separated by the TS decoder unit 123 is read out, notified to the reproducing unit 128, and displayed over the image data. 1-3-9-1. Initial control The reception control unit 126 includes a CPU and a program that controls the CPU, and is stored by the user in the transmission data storage unit 102 in the transport stream transmitted by the transmission unit 106 of the data transmission device 101. When an event in which transmission data is multiplexed is selected for the first time, the system information table is first stored in accordance with the procedure defined by the MPEG2 system standard and DVB-SI standard used in general satellite digital broadcast receivers. The transmission unit 106 instructs the reception unit 122 to receive the transport stream transmitted by the transmission unit 106 and separates the PMT corresponding to the selected event from the TS decoder unit 12.
Instruct 3

Next, the reception control unit 126 refers to the PMT recorded in the system information table storage unit 134, acquires the identifier of the PCR, and
Set to 1. Further, the reception control unit 126 obtains the image data of the entry content and the identifier of the navigation information, and sets them in the filter condition of the stream correspondence table of the filter condition storage unit 131 and the filter condition of the navigation information table, respectively.

Further, the reception control unit 126 refers to the PMT in the system information table storage unit 134 to obtain the PID values of the component for transmitting the stream correspondence table and the component for transmitting the navigation information table, The filter condition of the stream correspondence table and the filter condition of the navigation information table in the filter condition storage unit 131 are set, and these filter conditions are set to the start state.

[0131] The reception control unit 126
When the notification of the separation of the stream correspondence table is received from 3, the filter condition of the stream correspondence table in the filter condition storage unit 131 is set to the stopped state. Next, the reception control unit 126
With reference to the stream correspondence table in the stream correspondence information table storage unit 132, “stream_i”
The value of “d” is read, and the filter condition of the image data in the filter condition storage unit 131 is set. Next, with reference to the stream correspondence table in the stream correspondence information table storage unit 132, the value of “component_tag” is read out, and the PM in the system information table storage unit 134 is read.
“Component_ta” read with reference to
The value of the PID corresponding to the value of “g” is obtained, the filter condition of the image data in the filter condition storage unit 131 is set, and the filter condition is set to the start state. 1-3-9-2. Judgment of appropriateness of image data Note that the data transmitting apparatus 101 may transmit a plurality of different image data with the same value of PID and stream_id, but after transmitting the stream correspondence table corresponding to a certain image data, After a certain period of time, the image data is transmitted so as to appear earlier than other image data having the same PID and stream_id.
Accordingly, if the reception control unit 126 completes the setting of the filter conditions of the image data within a certain time after receiving the stream correspondence table, the TS decoder unit 123 separates the desired image data without error, and the AV decoder unit 124.

Next, the reception control unit 126 acquires the value of the image data identifier described in the private area of the image data output from the TS decoder unit 123 via the AV decoder unit 124, and is about to acquire it now. It is checked whether it matches the image data identifier. If they do not match, the filter condition of the image data in the filter condition storage unit 131 is set to the stopped state, and the filter condition of the stream correspondence table and the PID of the component transmitting the stream correspondence table and the current attempt are to be obtained. An image data identifier is set, and the filter condition of the stream correspondence table is set to a start state. Note that the identifier “t” of the stream correspondence table
The value of “able_id_extension” is the same as the value of the identifier “VE_id” of the image data. As a result, even if the reception control unit 126 delays the process of setting the filter condition of the image data with reference to the stream correspondence table for some reason, another image data may be erroneously displayed. Can be prevented.

[0133] The reception control unit 126 is provided with the TS decoder unit 12
If the value of the identifier described in the private area of the image data output from the image data 3 matches the value of the identifier of the image data to be acquired at present, the stream correspondence table in the stream correspondence information table storage unit 132 And reads the value of “first_pts”. Then, by referring to the clock section of the AV decoder section 124, the AV section 124 reads the AV
It is checked whether or not a notification of completion of decoding of the frame is received from the decoder unit 124. When there is no notification of the completion of decoding, the filter condition of the image data in the filter condition storage unit 131 is set to the stopped state, and the filter condition of the stream correspondence table and the PID of the component transmitting the stream correspondence table and the current acquisition are to be obtained. The identifier of the image data is reset, and the filter condition of the stream correspondence table is set to a start state.

Thus, even if the reception control unit 126 delays the process of setting the filter condition of the image data with reference to the stream correspondence table for some reason, the beginning of the image data is cut off and Reproduction can be prevented. When a notification of the completion of decoding of the frame is received from the AV decoder unit 124, the reception control unit 126 refers to the stream correspondence table in the stream correspondence information table storage unit 132 and reads “last_pts”.
Read the value of. Then, with reference to the clock section of the AV decoder section 124, when the time of the value of the read “last_pts” comes, the filter condition of the image data in the filter condition storage section 131 is set to a stopped state. This allows
Only the desired image data is separated and the AV decoder 12
4 is output. Therefore, the same PID and stream
There is no separation of other image data having an am_id. 1-3-9-3. Generation of Graphics Information Upon receiving the notification of the separation of the navigation information table from the TS decoder unit 123, the reception control unit 126 sets the filter condition of the navigation information table in the filter condition storage unit 131 to a stopped state. Next, the reception control unit 126
With reference to the object definition table in the navigation information table in the navigation information table storage unit 133, the display coordinates “X” and “Y” of the button object are obtained, and then, for the button having the index value “0”,
The index value of “Focused Bitmap” is set to “Normal B” for the other buttons.
It acquires the index value of “itmap”, refers to the bitmap table, acquires bitmap data corresponding to the index value, generates graphics information of the button based on these, and outputs the graphics information to the playback unit 128. 1-3-9-4. Interpretation of User Operation In addition, the reception control unit 126 sets the variable cur_fo representing the index value of the button object that is currently selected.
cus is initialized to “0”.

[0135] The reception control unit 126 is connected to the signal reception unit 1.
When the signal of the user operation is received from 27, it is determined whether the signal of the user operation is “up”, “down”, or “fixed”. When the signal of the user operation is “up” or “down”, the value of the variable cur_focus is decreased or increased by “1”. Next, the display coordinates “X” and “Y” of the button object are acquired with reference to the navigation information table in the navigation information table storage unit 133 and first with reference to the object definition table. For buttons equal to the value of cur_focus, see “Focused Bitm
For the other buttons, the index value of “Normal Bitmap” is obtained, the bitmap table is referred to, the bitmap data corresponding to the index value is obtained, and the bitmap data corresponding to the index value is obtained. Generating the graphics information of the button and reproducing
8 is output.

When the signal of the user operation is “determined”, the reception control unit 126 refers to the object definition table of the navigation information table NVT stored in the navigation information table storage unit 133, The index value of the handler of the button object whose value is equal to the value of the variable cur_focus is acquired, the instruction is read from the handler corresponding to the index value by referring to the handler definition table. The command word is "goto
In the case of "_contents", the index value of the argument is further read, and the identifier of the linked content corresponding to the read index value is read as the identifier of the content to be reproduced next with reference to the hyperlink table.

When the command word is “goto_entry”, the system refers to the PMT of the event to which the navigation information table of the currently reproduced content belongs in the system information table storage unit 134, and sets the identifier of the entry content to the content to be reproduced next. Read as the identifier of 1-3-9-5. Setting of Filter Condition The reception control unit 126 does nothing if the identifier of the content to be reproduced next is equal to the identifier of the content currently being reproduced. Orig of the content to be played next
internal_network_id and transport
If _stream_id is different from the currently received transport stream, the receiving unit 122 refers to the system information table according to the procedure defined by the MPEG2 system standard and the DVB-SI standard, and determines whether to receive the desired transport stream. To instruct. As an operation of the receiving unit 122, when the specified transport stream belongs to another network, processing such as changing the direction of the antenna is performed, and the specified transport stream is received.

When the event to which the image data of the content to be reproduced next belongs is different from the event to which the image data of the content to be reproduced currently belongs, the reception control unit 126 similarly refers to the system information table and PMT of the event to which the image data of the content to be played belongs
Is set in the filter condition storage unit 131 of the TS decoder unit 123.

The TS decoder unit 123 separates the PMT according to the filter condition, and separates the PMT from the system information table storage unit 13.
4 and notify the reception control unit 126. Upon receiving the PMT separation notification of the event to which the image data belongs from the TS decoder unit 123, the reception control unit 126
The value of “PCR_PID” is set in the filter condition storage unit 131 with reference to T.

The reception control unit 126 determines that the event to which the navigation information of the content to be reproduced next belongs belongs.
When the event to which the navigation information of the currently reproduced content belongs is different from the event to which the navigation information of the content to be reproduced next belongs, the PMT identifier of the event to which the navigation information of the content to be reproduced next belongs is similarly referred to by referring to the system information table. Set in the storage unit 131.

The reception control unit 126 sets the value of the identifier “VE_id” of the image data of the content to be reproduced next to the identifier “VE_id” of the image data of the content currently reproduced.
If the value is different from the value of “id”, the PMT of the event to which the image data of the content to be reproduced next belongs in the system information table storage unit 134, and the VE_Informa
Tion_Component_Descriptor
To obtain the PID of the component attached to
Along with the value of “id”, the filter condition is set as a filter condition of the stream correspondence table in the filter condition storage unit 131, and the filter condition is set to a start state.

When the value of the identifier “NE_id” of the navigation information of the content to be reproduced next is different from the value of the identifier “NE_id” of the navigation information of the content currently reproduced, the reception control unit 126 stores the system information table. Referring to the PMT of the event to which the navigation information of the content to be reproduced next after the section 134 belongs, NE_Component_Descriptor
The PID of the component attached to is acquired, and “NE_
The filter condition is set to the filter condition of the navigation information table in the filter condition storage unit 131 together with the value of “id”, and the filter condition is set to a start state. 1-3-10. Specific example of content display on data receiving device 121 For example, original_network_id multiplexed on transport stream 1801 in FIG.
Is "0x0001" and transport_stream
am_id is "0x0001", service_id
Is "0x0001" and the event_id is "0x000"
When the event identified by “1” is first selected by the user, the reception control unit 126 refers to the NIT 1301 shown in FIG. And o
If the original_network_id is "0x000
At “1”, the transport_stream_id acquires information on transmission parameters such as the frequency of the transport stream 1801 identified by “0x0001”, and instructs the receiving unit 122 to receive the transport stream 1801, and similarly, as shown in FIG. Referring to PAT1401, “program_no” is service_id
Is obtained, that is, the PMT value “0x0080” of the PMT of the program “0x0001” is obtained and set as the PMT filter condition in the filter condition storage unit 131.

The TS decoder section 123 has a P
The MT 1501 is separated, and the system information table storage 1
34, and notifies the reception control unit 126. The reception control unit 126 reads the value “0x0081” of “PCR_PID” from the PMT 1501 stored in the system information table storage unit 134, and
The filter conditions of the PCR in 1 are set. Next, the reception control unit 126 checks the En in the PMT 1501 shown in FIG.
Refer to “try_Descriptor” and enter “entry
The value “0x0005” of “_VE_id” is extracted and set to “table_id_extension” of the filter condition of the stream correspondence table in the filter condition storage unit 131. Next, the reception control unit 126 outputs the VE_Information_Componen from the PMT 1501.
P of component attached to t_Descriptor
The value “0x0083” of the ID is acquired, similarly set to “PID” of the filter condition of the stream correspondence table, and the filter condition of the stream correspondence table is set to a start state.

Next, the reception control unit 126
Entry_Descriptor shown in FIG. 21A in FIG.
r, and the value “0x0” of “entry_NE_id”
005 ”is extracted, and“ table_i ”of the filter condition of the navigation information table in the filter condition storage unit 131 is extracted.
d_extension ". Next, the reception control unit 126 sends the NE_Compon
The PID value “0x0082” of the component attached to the ent_Descriptor is acquired, and similarly, set as the “PID” of the filter condition of the navigation information table,
Set the filter condition of the navigation information table to the start state.

The TS decoder section 123 separates the stream correspondence table 1201 shown in FIG.
And the navigation information table 1001 shown in FIG. 13 is separated, stored in the navigation information table storage unit 133, and notified to the reception control unit 126. Upon receiving the notification of separation of the stream correspondence table, the reception control unit 126 refers to the stream correspondence table 1201 of the stream correspondence information table storage unit 132 and reads “stream_i”.
d ”of the filter condition storage unit 1
31, the stream condition of the image data filter condition "stream_
id ”. Next, from the stream correspondence table 1201, the value “0x00” of “component_tag”
, And with reference to the PMT 1501 in the system information table storage unit 134, “component_t”
ag ”is a stream_ident of“ 0x00 ”
The value “0x0084” of the “PID” of the component whose type of data to be transmitted is image data attached to “ifier_descriptor” is acquired, and “PI” of the filter condition of the image data in the filter condition storage unit 131 is acquired.
D ”, and the filter condition is set to a start state.

[0146] In the stream correspondence table, "compon"
When the value of “PID” is directly written in place of the value of “ent_tag”, the reception control unit 126 does not refer to the PMT and reads “stream” from the stream correspondence table.
The values of “m_id” and “PID” are obtained, and the filter condition of the image data in the filter condition storage unit 131 is set.

The TS decoder section 123 separates the bit stream 901 of the image data shown in FIG. The bit stream 901 of the image data is obtained by writing the value “0x0005” of “VE_id” in the private area of the still image data 201 shown in FIG. 5A. The reception control unit 126 outputs the identifier value “0x0005” written in the private area of the separated image data via the AV decoder unit 124.
Is received, and table_i in the stream correspondence table is
Value “0x0005” set in d_extension
Make sure it matches. Next, while referring to the clock section of the AV decoder section 124, the value “11250” of “first_pts” in the stream correspondence table 1201 is set.
When the success notification that the decoding of the image data is successful is confirmed from the AV decoder unit 124 by the time “0”, the value “1_pts” of the stream correspondence table 1201 is set to “1”.
12500 ”, and the filter condition storage unit 131
Is set to the stopped state.

Upon receiving the notification of separation of the navigation information table, the reception control unit 126 first sets the variable cur_f
ocus is set to “0”, the navigation information table 1001 of the navigation information table storage unit 133 is referenced, and the display coordinates of the button corresponding to the index value “0” and the bitmap corresponding to the index value of “Focused Bitmap” are set. The data, the display coordinates of the button corresponding to the index value “1”, and “Normal
Bitmap data corresponding to the index value of “Bitmap” is obtained, and graphics information of the button is generated and output to the reproducing unit 128. The playback unit 128
The display information 2301 shown in FIG. 27A is displayed on the display unit 129 by superimposing the graphics information output from the reception control unit 126 on the image data output from the V decoder unit 124.

When the user inputs a “down” signal using an operation member such as a remote controller while the display image 2301 is being displayed, the reception control unit 126 firstly inputs the input signal via the signal reception unit 127. After receiving the notification of "below", the variable c
The value of ur_focus is increased by “1” to “1”.
Next, by referring to the navigation information table 1001 in the navigation information table storage unit 133, the display coordinates of the button corresponding to the index value “0” and “Normal
Bitmap data corresponding to the index value of “Bitmap”, display coordinates of the button corresponding to the index value “1”, and bitmap data corresponding to the index value of “Focused Bitmap” are obtained, and the graphics information of the button is obtained. Generate and Playback Unit 12
8 is output. The playback unit 128 includes an AV decoder unit 124
The graphics information output from the reception control unit 126 is superimposed on the image data output from, and a display image 2302 shown in FIG. 27B is displayed on the display unit 129.

When the user inputs a “confirmation” signal using an operation member such as a remote controller while the display image 2301 is displayed, the reception control unit 126 inputs the signal via the signal reception unit 127. After receiving the signal "Confirmation",
The index value “0” of the handler of the button whose index value of the object definition table 1002 of the navigation information table 1001 of the navigation information table storage unit 133 is the value “0” of the variable cur_focus is acquired,
Referring to the handler definition table 1003, the script command “goto_con” corresponding to the index value “0”
tents ”and its argument index value“ 0 ”
To get.

Next, the reception control unit 126 refers to the hyperlink table 1004, and determines the value “0x00” of the “VE_id” of the content at the link destination corresponding to the index value “0”.
01 ”is extracted, and“ table_id_e ”of the filter condition of the stream correspondence table in the filter condition storage unit 131 is extracted.
xtension ". Next, the reception control unit 12
6 is from the PMT 1501 and VE_Informati
The PID value “0x0083” of the component attached to the on_Component_Descriptor is acquired, and “Px” of the filter condition of the stream correspondence table is similarly obtained.
ID ", and set the filter condition of the stream correspondence table to a start state.

Next, the reception control unit 126 sets “NE_i” of the linked content corresponding to the index value “0”.
The value “0x0001” of “d” is extracted, and set to “table_id_extension” of the filter condition of the navigation information table in the filter condition storage unit 131. Next, the reception control unit 126 determines from the PMT 1501
The PID value “0x0082” of the component attached to the NE_Component_Descriptor is acquired, and the filter condition of the navigation information table is similarly obtained.
"PID" is set, and the filter condition of the navigation information table is set to a start state.

The TS decoder unit 123 separates the stream correspondence table 1202 shown in FIG. 15B and stores it in the stream correspondence information table storage unit 132.
The navigation information table 1101 shown in FIG. 14 is separated, stored in the navigation information table storage unit 133, and notified to the reception control unit 126. Upon receiving the stream correspondence table separation notification from the TS decoder unit 123, the reception control unit 126 receives the stream correspondence table 12
02 in the TS decoder unit 12
Instruct 3 In addition, when receiving a notification of separation of the navigation information table from the TS decoder unit 123, the unit generates graphics information of the button with reference to the navigation information table 1101, and outputs it to the reproduction unit 128.

The reproduction section 128 superimposes the graphics information output from the reception control section 126 on the image data output from the AV decoder section 124 and causes the display section 129 to display a display image 2303 shown in FIG. 27C. Further, when the user inputs a “confirmation” signal using an operation member such as a remote controller while the display image 2301 is displayed, the reception control unit 126 outputs the input signal “ In response to the notification of “determination”, the script command “goto_entry” is acquired with reference to the navigation information table 1101 of the navigation information table storage unit 133. . Next, the reception control unit 126 reads from the PMT 1501 stored in the system information table storage unit 134
The value “0x0005” of “entry_VE_id” is extracted, and “table_id_extens” of the filter condition of the stream correspondence table in the filter condition storage unit 131 is extracted.
ion ”.

Next, the reception control unit 126
From 1, VE_Information_Compon
The PID value “0x0083” of the component attached to “ent_Descriptor” is acquired, similarly, “PID” of the filter condition of the stream correspondence table is set, and the filter condition of the stream correspondence table is set to a start state. The reception control unit 126 refers to the PMT 1501 and “entr
The value “0x0005” of “y_NE_id” is extracted, and “table_id_extension” of the filter condition of the navigation information table in the filter condition storage unit 131 is extracted.
n ”. Next, the reception control unit 126 sets the PMT1
From 501, NE_Component_Describe
PID value “0x” of the component to which the por is assigned
0082 "is obtained," PID "of the filter condition of the navigation information table is similarly set, and the filter condition of the navigation information table is set to the start state.

The TS decoder section 123 separates the stream correspondence table 1201 shown in FIG.
And the navigation information table 1001 shown in FIG. 13 is separated, stored in the navigation information table storage unit 133, and notified to the reception control unit 126. Upon receiving the stream correspondence table separation notification from the TS decoder unit 123, the reception control unit 126 receives the stream correspondence table 12
01 and the TS decoder unit 12
Instruct 3 Further, upon receiving the notification of the separation of the navigation information table from the TS decoder unit 123, the unit generates graphics information of the button with reference to the navigation information table 1001, and outputs it to the reproduction unit 128.

[0157] The reproduction section 128 superimposes the graphics information output from the reception control section 126 on the image data output from the AV decoder section 124, and displays the display image 2301 shown in FIG. 1-3-11. Operation of Data Receiving Apparatus 121 Hereinafter, the operation of the data receiving apparatus 121 will be described with reference to the flowcharts shown in FIGS. 1-3-11-1. Overall Operation First, the overall operation of the data receiving apparatus 121 will be described with reference to FIG.

When the power of the data receiving device 121 is turned on by the user, the receiving control unit 126 controls the receiving unit 122 and the TS decoder unit 123 in accordance with the procedure defined by the MPEG2 system standard and the DVB-SI standard. Then, the system information table is received, the program guide is displayed on the display unit 129 by the reproducing unit 128, and the user is caused to select a program using an operation member such as a remote controller. When the selection signal from the operation member is notified via the signal receiving unit 127, the transmission data storage unit 10 in the transport stream transmitted from the transmission unit 106 of the data transmission device 101
2 is selected, and an identifier of the event, original_n, is selected.
network_id, transport_stream
m_id, service_id, and event_id are obtained (S2402).

[0159] The reception control unit 126 stores the transmission data storage unit 1
02 is selected, an event multiplexed with the transmission data stored in the MPEG2 system standard and the DV
The system information table is referred to in accordance with the procedure defined in the B-SI standard, the receiving unit 122 is instructed to receive the transport stream transmitted from the transmitting unit 106, and the PMT corresponding to the selected event is separated. TS
It instructs the decoder unit 123. The receiving unit 122 receives the transport stream transmitted from the transmitting unit 106 and outputs the transport stream to the TS decoder unit 123. The TS decoder unit 123 separates the PMT corresponding to the selected event, writes the PMT into the system information table storage unit 134 in the reception data storage unit 125, and notifies the reception control unit 126. The reception control unit 126 sends the P
When the notification of the MT reception is received, the PMT of the PCR is acquired by referring to the PMT in the system information table storage unit 134 and stored in the filter condition storage unit 131 (S240).
4).

The reception control unit 126 sets the variable cur_ori
The original_network_id of the selected event is set in the “general_network_id”, and the variable cur_transport_stream_
transport_st of the event selected for id
Set the stream_id and set the variable cur_VE_serv
ice_id and the variable cur_NE_service_i
d, the service_id of the selected service is set, and the variable cur_VE_event_id and the variable cu are set.
The event_id of the selected event is set in r_NE_event_id, and the variables cur_VE_id and cur_NE_id are cleared. These variables indicate information on the identifier of the content currently being reproduced (S2406). Next, the reception control unit 126 sets the original_network of the event selected in the variable new_original_network_id.
Set k_id and set the variable new_transport_
trans of the event selected for stream_id
Set port_stream_id and set the variable new_
VE_service_id and variable new_NE_se
service_id and service of the selected service
ce_id is set and the variable new_VE_event_
The event_id of the selected event is set to the id and the variable new_NE_event_id, and the variable new
_VE_id and the variable new_NE_id with reference to the PMT in the system information table storage unit 134, and ent
The values of ry_VE_id and entry_NE_id are set (S2408).

Next, the reception control unit 126 performs a content switching process. Details of the content switching process will be described later (S2410). Next, the reception control unit 126
Clears the content change flag indicating that content switching is required to "0" (S241).
2). Next, the reception control unit 126 waits for a signal input of a selection operation from the user notified from the signal reception unit 127 (S2414). The reception control unit 126 includes the signal reception unit 12
When there is a signal input from 7, a user input signal is processed. Details of the processing of the user input signal will be described later (S2416). Next, the reception control unit 126 determines whether or not “1” is set in the content change flag (S2418).
Returning to 10, if not "1", the flow returns to S2414. 1-3-11-2. Content Switching Process Next, details of the content switching process in S2410 will be described with reference to the flowchart in FIG.

First, the reception control unit 126 stores the variable new_original_netw
ork_id and cur_original_network
rk_id has the same value and the variable new_tr
transport_stream_id and cur_tra
It is determined whether or not the value of nsport_stream_id is the same (S2502). If the result is affirmative, the image data switching process (S2504) and the navigation information switching process (S2506) are performed in parallel, and the process ends. When the result is negative, the variable new_original_network is referred by referring to the system information table.
k_id and variable new_transport_stree
A switching process to the transport stream identified by am_id is performed (S2508), and the variable cur_or
The variable new_o is assigned to original_network_id.
Set the value of original_network_id,
Variable cur_transport_stream_id
To the variable new_transport_stream_i
Set the value of d and set the variable cur_VE_service_
id, variable cur_VE_event_id, variable cu
r_VE_id, variable cur_NE_service_
id, variable cur_NE_event_id, variable cu
r_NE_id is cleared (S2510), the image data switching process (S2504) and the navigation information switching process (S2506) are performed in parallel, and the process ends. 1-3-11-3. Image Data Switching Process Next, details of the image data switching process in S2504 will be described with reference to the flowchart in FIG.

The reception control unit 126 stores the variables new_VE_service_id and cur_V stored therein.
The values of E_service_id are the same, and the variables new_VE_event_id and cur_VE_e
It is determined whether the value with vent_id is the same (S2602). If affirmative, the variable new_VE_i
It is determined whether or not the values of d and cur_VE_id are the same (S2604). If the determination in S2602 is negative, the variable new_VE_service_id, n
Referring to the system information table corresponding to ew_VE_event_id, a variable new_VE_service is referred to.
_Id and instructs the TS decoder unit 123 to separate the PMT corresponding to the event identified by the variable new_VE_event_id. The TS decoder unit 123 separates the designated PMT, writes it into the system information table storage unit 134 in the reception data storage unit 125, and notifies the reception control unit 126. Upon receiving the PMT separation notification, the reception control unit 126 refers to the received PMT and
The ID is acquired and set in the filter condition storage unit 131 (S2606). The reception control unit 126 uses the variable cur_VE
_Id is set to the value of the variable new_VE_service_id, and the variable cur_VE_event_id is set to the value of the variable new_VE_event_id (S2).
608).

The reception control unit 126 stores the variable cur_VE_service in the system information table storage unit 134.
_Id, reference to the PMT corresponding to the event identified by cur_VE_event_id, and VE_Inform
motion_Component_Descript
The PID of the component attached to or is acquired, and the value of the variable new_VE_id is
nsion is set in the filter condition of the stream correspondence table, and this filter condition is set to the start state. The TS decoder unit 123 sets the variable ne according to the filter condition.
Stream correspondence table VET corresponding to the value of w_VE_id
Is separated from the transport stream, stored in the stream correspondence information table storage unit 132, and notified to the reception control unit 126 (S2610).

Next, the reception control unit 126 interprets the stream correspondence table VET acquired in S2610 in the stream correspondence information table storage unit 132, and sets the variable firstPTS
To the value of “first_pts” and the variable lastPTS
Is set to the value of “last_pts”, and “stream_pts”
_Id ”and the value of“ component_tag ”are acquired (S2612). Next, the reception control unit 126 initializes a flag “first_flag” indicating whether decoding of the first frame of the image data has been completed to “0” (S2614).

Next, the reception control unit 126 stores the variable cur_VE_servi in the system information table storage unit 134.
Referring to the PMT corresponding to the event identified by ce_id and cur_VE_event_id, the type of data to be transmitted is image data, and “component_t”
ag ”is“ component ”acquired in S2612.
stream_identi equal to the value of "t_tag"
The PID of the component attached to the fire_descriptor is acquired, and “str” acquired in S2612 is acquired.
along with the value of “eam_id”
The filter condition is set for the middle image data, and the filter condition is set to the start state. The TS decoder unit 123
The image data is separated according to the filter conditions and output to the AV decoder unit 124 (S2616).

The reception control unit 126 is provided for the AV decoder unit 12
4, the TS decoder 123 obtains the value of the identifier of the image data described in the private area of the separated image data, and compares it with the value of the variable new_VE_id (S2618). If they match, the process moves to S2620; if they do not match, the process moves to S2619. Reception control unit 126
Sets the filter condition of the image data in the filter condition storage unit 131 to the stopped state (S2619), and S2610
Return to

When the decoding of the image data output from the TS decoder 123 is completed, the AV decoder 124
The reception control unit 126 is notified of the completion of the decoding. The reception control unit 126 determines whether the completion notification has been received (S2620). The process proceeds to S2622 if received, and proceeds to S2624 if not received. Reception control unit 126
Sets the value “1” to the flag first_flag (S2622).

The reception control unit 126 determines the current time by referring to the value of the clock unit of the AV decoder unit 124 for 90000.
It is acquired in units of 1 / second and compared with the value of the variable firstPTS (S2624). The value of the current time is the variable
If it is equal to or longer than tPTS, the process proceeds to S2626, and if it is less than tPTS, the process proceeds to S2628. The reception control unit 126 sets the flag fi
It is determined whether or not the value of the rst_flag is “1” (S2626), and when it is “0”, the process proceeds to S2619,
In the case of “1”, the flow shifts to S2628.

At S2628, reception control section 126
Obtains the current time in units of 1/90000 second with reference to the value of the clock section of the AV decoder section 124, and
Compare with the value of astPTS. The value of the current time is a variable l
When the value is equal to or more than astPTS, the filter condition storage unit 13
The filter condition of the image data in 1 is set to the stop state (S2630), and the variable new is set to the variable cur_VE_id.
_VE_id is set (S2632), the image data reproduction process is terminated, and the value of the current time is set to the variable lastP.
If it is less than TS, the process returns to S2620. 1-3-11-4. Navigation Information Switching Process Next, details of the navigation information switching process in S2506 will be described with reference to the flowchart in FIG.

The reception control unit 126 stores the variables new_NE_service_id and cur_N stored therein.
The values of E_service_id are the same, and the variables new_NE_event_id and cur_NE_e
It is determined whether the value with vent_id is the same (S2702). If affirmative, the variable new_NE_i
It is determined whether or not the values of d and cur_NE_id are the same (S2704). If affirmative, the process ends, and if negative, the process proceeds to S2706. If the determination in S2702 is negative, the variable new_NE_service_id, n
Referring to the system information table corresponding to new_NE_event_id, the variable new_NE_service is referred to.
_Id and the variable new_NE_event_id are instructed to the TS decoder unit 123 to separate the PMT corresponding to the event identified by the event. The TS decoder unit 123 separates the designated PMT, records it in the system information table storage unit 134 in the reception data storage unit 125, and
26 (S2708).

The reception control unit 126 sets the variable cur_NE_s
The variable new_NE_service is assigned to service_id.
Set the value of e_id and set the variable cur_NE_event
The value of the variable new_NE_event_id is set to _id (S2710). In S2706, the reception control unit 126 sets the variables cur_NE_service_id and cur_NE in the system information table storage unit 134.
P corresponding to the event identified by _event_id
Referring to MT, NE_Component_Descr
The PID of the component attached to the “iptor” is obtained, and the value of the variable “new_NE_id” is set to “table_id_”.
The filter condition is set as the extension in the filter condition of the navigation information table in the filter condition storage unit 131, and the filter condition is set to the start state. TS decoder unit 12
3 is a variable new_NE_i according to the filter condition.
The navigation information table NVT corresponding to the value of d is separated from the transport stream, recorded in the navigation information table storage unit 133, and notified to the reception control unit 126 (S2706).

The reception control unit 126 refers to the object definition table of the navigation information table NVT acquired in S2706 in the navigation information table storage unit 133, and
The display coordinates “X” and “Y” of the button object are obtained, the index value of “NormalBitmap” is obtained, the bitmap table is referred to, and the bitmap data corresponding to the index value is obtained. At this time, graphics information of the button is generated and output to the reproducing unit 128. The playback unit 128 is an AV decoder unit 1
The graphics information is superimposed on the image data decoded by the H.24, and is displayed on the display unit 129 (S271).
2).

The reception control unit 126 sets a variable cur representing the index value of the currently selected button object.
_Focus is initialized to “0” (S2714). The reception control unit 126 refers to the object definition table of the navigation information table NVT acquired in S2706, acquires the display coordinates “X” and “Y” of the button object whose index value is equal to the value of the variable cur_focus, and then An index value of “Focused Bitmap” is acquired, a bitmap table is referred to, bitmap data corresponding to the index value is acquired, and a bitmap of a button having an index value corresponding to the value of the variable cur_focus is acquired based on these. The graphics information of the button object in the bit map of the selected state is generated and output to the reproducing unit 128. Playback unit 128
Represents on the image data decoded by the AV decoder unit 124,
The graphics information is superimposed and displayed on the display unit 129 (S2716), the value of the variable new_NE_id is set to the variable cur_NE_id (S2718), and the navigation information switching process ends. 1-3-11-5. Processing of User Input Signal Next, the processing of the user input signal in S2416 will be described with reference to the flowchart in FIG.

Receiving control section 126 determines whether or not the user's input notified from signal receiving section 127 is an "up" signal. If the signal is an "up" signal, the flow shifts to S2804; otherwise, the flow shifts to S2808 (S2802). S28
In 04, the reception control unit 126 sets the variable cur_fo
The value of cus is reduced by “1”. However, the variable cur_focu
If the value of s is “0”, it is left as “0”.

The reception control unit 126 refers to the object definition table of the navigation information table NVT acquired in S2706 stored in the navigation information table storage unit 133 and sets the index value to the variable cur_focu.
the display coordinates "X" of the button object equal to the value of s,
"Y" is acquired, and then "Focused Bitm
The index value of “ap” is acquired, the bitmap table corresponding to the index value is acquired by referring to the bitmap table, and the bitmap of the button having the index value corresponding to the value of the variable cur_focus is selected based on these. And generates a button object graphics information in which the bitmap of the button corresponding to the index value corresponding to the value of the variable cur_focus is changed to the bitmap of the normal state in the same manner, and is output to the reproducing unit 128. I do. The playback unit 128
This graphics information is superimposed on the image data decoded by the AV decoder unit 124 and is displayed on the display unit 129 (S2806), and the user input processing ends.

In S2808, reception control section 126
Determines whether the user input notified from the signal receiving unit 127 is a “down” signal. If it is a "down" signal, the flow proceeds to S2810; otherwise, the flow proceeds to S2812. In S2810, the reception control unit 126 sets the variable c
The value of ur_focus is increased by “1”. Where the variable cu
If the value of r_focus is equal to the maximum value of the identifier of the button object in the navigation information table NVT, the process proceeds to S2806 as it is.

At S2812, reception control unit 126
Determines whether the user input notified from the signal receiving unit 127 is a “confirmation” signal. If the signal is a "confirmation" signal, the flow advances to step S2814; otherwise, the user input processing ends. In S2814, the reception control unit 1
Reference numeral 26 refers to the object definition table of the navigation information table NVT, and the index value is a variable cur_foc.
The index value of the handler of the button object equal to the value of us is acquired, the handler definition table is referenced, and the instruction is read from the handler corresponding to the index value. S2 when the instruction word is “goto_contents”
818, otherwise to S2824 (S2
816).

In S2818, reception control section 126
Reads the index value of the argument of the goto_contents instruction from the handler. Reception control unit 126
Refers to the hyperlink table of the navigation information table, and identifies the original_network of the content identifier corresponding to the index value read in S2818.
rk_id, transport_stream_i
d, VE_service_id, VE_event_
id, VE_id, NE_service_id, NE
_Event_id and NE_id are set to variables new_original_network_id and n, respectively.
ew_transport_stream_id, ne
w_VE_service_id, new_VE_ev
ent_id, new_VE_id, new_NE_s
service_id, new_NE_event_i
d, set to new_NE_id. However, the original value is not changed for the identifier for which no value is set in the hyperlink table, that is, for the identifier "-" (S2).
820).

[0180] The reception control unit 126 sets the value of the content change flag to "1" (S2822), and ends the signal processing of the user. In S2824, the reception control unit 126
Determines whether the script command is “goto_entry”, and if not, terminates the user signal processing. At the time of “goto_entry”, the reception control unit 126 sets the variables cur_NE_service_id and cur_NE_ in the system information table storage unit 134.
PM corresponding to the event identified by event_id
T, "entry_VE_id", "entr
y_NE_id ”is set to a variable new_VE_id and a variable new_NE_id, and a variable new_VE_s
service_id, variable new_VE_event_
In id, the variable cur_NE_service_
id and the value of the variable cur_event_id are set (S
2826), and proceed to S2822.

As described above, the display image 2301 shown in FIG. 27A is switched to the display image 2303 shown in FIG. 27C according to the operation of the user, and returns to the original state. 1-3-12. Conclusion As described above, the data receiving apparatus 1 of the present embodiment
The information 21 can extract presentation information and navigation information necessary for reproduction of specific content from the transport stream when necessary. This makes it possible to appropriately reproduce the linked content or the like in accordance with the operation of the user, and to provide a program having an interactive nature according to the user operation using a one-way communication path. Become.

In the receiving apparatus 121 of the present embodiment, the receiving section 122, the TS decoder section 123, the AV decoder section 124, the reproducing section 128, the display section 129, the audio output section 130 and the signal receiving section 127 are the same as those of the conventional apparatus. The same configuration as that of the digital television broadcast receiver can be used. Therefore, the object of the present invention is simply achieved by simply adding the above-described reception control unit 126, reception data storage unit 125, and the like to a reception unit, a TS decoder unit, an AV decoder unit, and the like that constitute a conventional digital broadcast reception device. The interactive function of the program can be realized.

Further, since these conventional configurations can be used as they are, it is also possible to realize a receiving apparatus having both the function of receiving ordinary digital satellite broadcasting and the interactive function of a program aimed at by the present invention. . 1-3-13. Others 1-3-13-1. Although the present embodiment has been described using an example in which all image data is a still image, even when the image data is a moving image,
Reproduction can be performed as in the present embodiment. 1-3-13-2. Further, in the present embodiment, the case where each content is a set of image data and navigation information has been described, but audio data may be further set. In this case, the reception control unit 126 may be configured to perform the switching process of the audio data in parallel with the switching process of the image data and output the audio data to the audio output unit 130. The audio data switching process can be realized in the same manner as the image data switching process. 1-3-13-3. Also, in the present embodiment, the receiving device 12 included in the handler definition table in the navigation information
Although the example in which the script describing one behavior is a simple one that only instructs the switching of the content has been described, a complex script including a plurality of command words may be used.

For example, when the program is “shopping information”, a script for calculating the total price of the product selected by the viewer may be described in the script.
To this end, the reception control unit 12 of the data reception device 121
6 can be realized by having a script execution function. With this function, the total amount may be calculated, the calculation result may be output to the reproduction unit 128, and displayed on the display unit 129.

Further, in this shopping, a script for ordering a product may be described. For this purpose, this script is connected to the computer system of the seller through, for example, a modem (not shown) of the receiving device 121 connected to a telephone line, and data necessary for ordering a desired product is obtained. What is necessary is just to make the contents to be transmitted. With this configuration, the user can actually place an order for a product while viewing the product information and confirming the total price of the ordered product. Embodiment 2 2-1. FIG. 33 is a configuration diagram of a data transmission device 3351 and a data reception device 3361 of the digital broadcasting system according to the second embodiment of the present invention. Data transmission device 1 of the first embodiment
Instead of 01 multiplexing and transmitting the stream correspondence table for each image data, the data transmitting apparatus 3351 of the present embodiment multiplexes and transmits the module information table for each of a plurality of image data. This module information table is stored in the data receiving device 3361 in the data transmitting device 3351.
Is used to take out one image data from the stream transmitted from. Although the stream correspondence table of the first embodiment represents identification information of one image data, the module information table of the present embodiment represents identification information of a plurality of image data. Due to these differences, the data transmission device 3351 includes a module information generation unit 3353 replacing the stream correspondence information table generation unit 111 of the first embodiment, and a multiplex control unit 33 replacing the multiplex control unit 110.
54, and a data multiplexing unit 3352 having

The data receiving apparatus 3361 includes a reception data storage section 3363 having a module information storage section 3364 in place of the stream correspondence information table storage section 132 in the first embodiment. A control unit 3362 is provided. Hereinafter, portions having the same configuration as in the first embodiment will be denoted by the same reference numerals, and description thereof will be omitted. Only the components unique to the present embodiment will be described. 2-2. Data transmission device 3351 The data transmission device 3351 includes a transmission data storage unit 102
, A module information generation unit 3353 and a multiplex control unit 335
4 is provided with a data multiplexing unit 3352 including the C.4, a multiplexed information storage unit 104, a system information table generation unit 105, and a transmission unit 106. Transmission data storage unit 102, multiplex information storage unit 104, system information table generation unit 10
5. Since the transmitting unit 106 is the same as that of the first embodiment, the description is omitted. 2-2-1. Data multiplexing unit 3352 The data multiplexing unit 3352 includes a multiplexing control unit 3354, a module information generating unit 3353, and an identifier information adding unit 11
2, a navigation information table generation unit 113, and a multiplexing unit 114.

The identifier information adding unit 112, the navigation information table generating unit 113, and the multiplexing unit 114 are the same as those in the first embodiment, and thus the description is omitted. 2-2-1-1. Multiplex Control Unit 3354 (No. 1) When the multiplex control unit 3354 is activated by the transmission unit 106,
According to the same procedure as the multiplex control unit 110 of the first embodiment,
A content identifier assignment table 701 and a display image information identifier assignment table 801 are created. When the creation is completed, the multiplexing control unit 3354 instructs the module information generation unit 3353 to generate a module information table, and the identifier information addition unit 1
12 instructs VE_id to be added to the private area of the image data, and instructs the navigation information table generation unit 113 to generate a navigation information table. 2-2-1-2. Module information generation unit 3353 The module information generation unit 3353 includes a multiplex control unit 3354.
Upon receiving an instruction to generate a module information table from, a module information table is created for each U image data with reference to the display image information identifier assignment table 801. U is the number of pieces of identification information of the image data included in one module information table, and the value of U is obtained by the equation U = P × S / 2. Here, P and S are the number of PIDs allocated for the components that transmit image data and the stream allocated to the image data, respectively, as in the first embodiment.
_Id. Here, U must be an integer. This can be easily realized by setting the value of P or S to an even number. In the present embodiment, the first embodiment
Similarly, P = 1 and S = 16. Therefore U = 8
Becomes

The module information table is stored in the data receiving device 33.
At 61, it is used to extract one image data from the stream transmitted from the data transmission device 3351. 34A, 34B and 34C show U = 8.
It is a figure which shows an example of the module information table in the case of each. The module information table “MIT (0)” 3451 indicates V
For each piece of image data having a value of E_id of “0” to “7”, a component_tag assigned to the image data and a stream_id
And the image data “VE (0)”,
"VE (1)", "VE (2)", "VE (3)",
"VE (4)", "VE (5)", "VE (6)",
Used to extract any of "VE (7)".

The module information table can be created by, for example, the following procedure. First, the module information generation unit 3353 sets the values of the variables i and n to 0, and sets the values of the n-th image data in the display image information identifier
It is checked whether identifier information of U image data can be extracted. If it can be extracted, the VE of U image data
_Id, component_tag, stream_
The value of id is taken out, and the module information table "MIT
(I) "in a storage area (not shown). Next, “1” is added to the value of the variable i, and U is added to the value of the variable n. If the identifier information cannot be extracted, the creation of the module information table ends.

Upon completing the creation of the module information table, the module information generation unit 3353 notifies the multiplex control unit 3354 of the completion. 2-2-1-3. Multiplexing Control Unit 3354 (No. 2) Upon receiving notification from the identifier information adding unit 112, the navigation information table generating unit 113, and the module information generating unit 3353 that the respective processes have been completed, the multiplexing controlling unit 3354 The number T is determined. The number of contents T in the repeating unit is defined as M, where M is the total number of contents stored in the transmission data storage unit 102.
It is assumed that M ≦ U × 2n = T. Here, n is M ≦ T
Is the smallest integer that satisfies In the present embodiment, M =
T is 64 because 63 and U = 8. If the number T of contents in the repetition unit is larger than the total number M of contents, the multiplexing control unit 110 multiplexes all contents and then multiplexes the smallest contents (T−M) as in the first embodiment. Multiple null packets of a size equal to or larger than the number are multiplexed. Thus, it is possible to guarantee that the interval between the module information table and the image data whose identification information is indicated in the module information table is equal to or more than a certain value (at least U times the minimum content size).

Next, the multiplexing control unit 3354 refers to the multiplexing information storage unit 104 and notifies the multiplexing unit 114 of the PCR_PID. Next, the multiplexing control unit 3354 sets “0” to the content counter i and the multiplexing start position pointer wp. Next, a content number N and a module information table number Q are obtained. Content number N is (i + U)
余 T remainder (integer), module information number Q is i ÷ U
Quotient (integer part). Next, the module information table MI
It is determined whether or not T (Q) is stored in the module information generation unit 3353.
The multiplexing unit 114 is instructed to multiplex (Q). At this time, the multiplexing start position wp and the bit rate B are notified, and "VE_information_comp" in the multiplexing information table 601 is notified.
“ent_pid” is notified as a PID.

Upon receiving the MIT (N) multiplexing instruction, the multiplexing unit 114 multiplexes in the transport stream using the specified multiplexing start position wp, bit rate B, and PID as in the case of VET. . When the MIT (Q) is not stored in the module information generation unit 3353,
The multiplexing control unit 3354 instructs the multiplexing unit 114 to multiplex null packets of the size of S_MIT, and notifies the multiplexing start position wp and the bit rate B. Here, S_MIT is a size when MIT is converted into a transport packet. After instructing the multiplexing unit 114 to perform multiplexing, the expression w
Calculate wp according to p = wp + S_MIT / B.

Next, multiplex control section 3354 determines whether or not VE (N) and NVT (N) are stored in identifier information adding section 112 or navigation information table generating section 113. If it is determined that the data is stored, the multiplexing unit 114 transmits the VE to the multiplexing unit 114 in the same manner as in the first embodiment.
(N), multiplexing of NVT (N) is instructed, and the value of wp is calculated. If it is determined that it is not stored, the multiplexing unit 114 is instructed to multiplex null packets by the same method as in the first embodiment, and wp is recalculated. Multiplex control unit 3354
Repeats the multiplexing instruction of VE (N) and NVT (N) while increasing the value of N by 1 until N becomes equal to i + U. When N = i + U, the multiplexing control unit 3354 adds U to the value of i, and then repeats the processing after calculating the content number N and the module information number Q. 2-2-1-4. Data multiplexing section 114 FIG. 35 is a diagram illustrating an example of the transport stream generated by the multiplexing section 114 in the present embodiment. Transport stream 1701 according to the first embodiment
In contrast, in the transport stream 3551 of the present embodiment, one module information table is multiplexed for every eight pieces of image data, whereas the stream correspondence table is multiplexed for each piece of image data. Module information table MI
T (N) is multiplexed at a position preceding the image data VE (N × 8) corresponding to the module information table by eight image data VE (N × 8 + 7). Further, between the module information table and the corresponding image data, the same PID and stream as the corresponding image data are provided.
Another image data having m_id is not multiplexed. Therefore, after receiving the module information table, the data receiving device 3361 determines that a plurality of the same PIDs and stream_i
The desired image data VE (N) can be extracted by separating only the first one of the image data given d. 2-2-2. Operation of Data Transmitting Apparatus 3351 Next, the operation of the data transmitting apparatus 3351 of the present embodiment will be described with reference to the flowcharts shown in FIGS.

First, the multiplex control unit 3354 creates a content identifier assignment table 701 (S3602), and then creates a display image information identifier assignment table 801 (S360).
4) Activate the identifier information adding unit 112, the navigation information table creating unit 113, and the module information generating unit 3353. The identifier information adding unit 112 adds the image data identifier to the private area of the image data and stores it (S3606), and notifies the multiplexing control unit 3354 to that effect. The navigation information table generation unit 113 generates a navigation information table (S3608), and notifies the multiplex control unit 3354 to that effect. The module information generation unit,
A module information table is generated (S3610), and this is notified to the multiplex control unit 3354.

The system information table generation unit 105
Various system information tables such as IT, SDT, EIT, PAT, and PMT are generated (S3612). Multiplex controller 33
54 determines the number T of contents in the repetition unit when multiplexing the contents into the transport stream (S36).
16), notifies the multiplexing unit 114 of the PCR_PID,
The multiplexing of the CR is instructed (S3616). Next, “0” is set for each of the content counter i and the multiplexing start position wp (S3752).

Next, the multiplex control unit 3354 obtains the content number N and the module information table number Q (S375).
4). The multiplex control unit 3354 includes the module information generation unit 3
It is determined whether there is a module information table MIT (Q) in 353 (S3756). If it exists, the multiplexing unit 114 is notified of the multiplexing start position wp, bit rate B, and PID, and instructs multiplexing of the module information table MIT (Q) (S3758). If not present, the multiplexing unit 114 is instructed to multiplex a null packet having a size of S_MIT (S3760).

Next, the multiplexing control unit 3354 calculates the multiplexing start position wp using the equation wp = wp + S_MIT / B (S3762), checks the identifier information adding unit 112 and the navigation information table generating unit 113, and checks the content N
It is determined whether or not exists (S3764). If it exists, the multiplexing unit 114 multiplexes the image data VE (N).
To instruct. At this time, the multiplexing start position wp, the bit rate Bv, the PID, and the stream_id are notified together (S3766). In addition, the navigation information table NVT
The multiplexing unit 114 instructs the multiplexing unit 114 to multiplex (N). At this time, the multiplexing start position wp, bit rate Bn, PID, tabl
e_id_extension is also notified (S3
768). Further, the multiplexing start position wp is calculated by the equation wp = wp + ｛S
_VE (N) + S_NVT (N)} / B (S3770), and the process moves to S3776.

When multiplexing control section 3354 determines in S3764 that it does not exist, S_VE (0) + S
The multiplexing unit 114 is instructed to multiplex a null packet having a size of _NVT (0) (S3772), and the multiplexing start position wp is calculated by the equation wp = wp + {S_VE (0) + S_NVT (0)}.
/ B is calculated (S3774), and the flow shifts to S3776.

In S3776, the multiplex control unit 3354
Adds “1” to the content number N. Multiplex control unit 3
354 determines whether the value of the content number N matches the sum of the value of the content counter i and the number U of the identification information of the image data included in the module information table of 1 (S).
3778). When they match, the value of U is added to the value of i (S3780), and the process returns to S3754. If they do not match, the flow returns to S3764. 2-3. Configuration of Data Receiving Apparatus 3361 Data receiving apparatus 3361 has a module information storage unit 3364 that stores a module information table separated by TS decoder unit 123, instead of stream correspondence information table storage unit 132 of the first embodiment. The configuration is substantially the same as that of the data receiving apparatus 121 of the first embodiment, except that a storage unit is provided and the function of the reception control unit 3362 is slightly different accordingly. 2-3-1. Image Data Switching Process The configuration of the data receiving device 3361 differs from the reception control unit 126 of the first embodiment only in the operation of the image data switching process in S2504 of the content switching process shown in FIG. . Therefore, only the operation of the data receiving device 3361 at the time of the image data switching process is described in FIG.
This will be described with reference to the flowchart shown in FIG.

[0200] When instructed to switch the image data, the reception control section 3362 stores the variable new_VE_service_i stored therein as in the case of the first embodiment.
The values of d and cur_VE_service_id are the same, and the variables new_VE_event_id and c
It is determined whether or not the values of ur_VE_event_id are the same (S3852). If affirmative, the variable ne
It is determined whether or not the values of w_VE_id and cur_VE_id are the same (S3854). If affirmative, the process ends, and if negative, the process proceeds to S3860. If the determination in S3852 is negative, the variable new_VE_service
Referring to the system information table corresponding to e_id and new_VE_event_id, a variable new_VE_s
service_id and variable new_VE_even
It instructs the TS decoder unit 123 to separate the PMT corresponding to the event identified by t_id. TS decoder unit 1
23 separates the designated PMT, and
25, and notifies the reception control unit 3362 of the information. Reception control unit 336
When the PMT 2 receives the PMT separation notification, it acquires the PID of the PCR with reference to the received PMT, and sets the PID of the PCR in the filter condition storage unit 131 (S3856). The reception control unit 126 stores the variable new_VE_serv in the variable cur_VE_id.
Set the value of ice_id and set the variable cur_VE_eve
The value of the variable new_VE_event_id is set to nt_id (S3858).

The reception control unit 3362 stores the variable cur_VE_service in the system information table storage unit 134.
e_id, reference to the PMT corresponding to the event identified by cur_VE_event_id, and VE_Info
rmation_Component_Descript
The PID of the component assigned to tor is acquired, set as a filter condition in the module information table in the filter condition storage unit 131, and the filter condition is set to a start state.
Here, the filter condition of the module information table is obtained by replacing the output destination of the filter condition of the stream correspondence table in the first embodiment with the module information storage unit 3364. The TS decoder unit 123 separates the module information table MIT from the transport stream according to the filter condition, stores the module information table MIT in the module information storage unit 3364, and notifies the reception control unit 3362 (S3860).

Next, the reception control unit 3362 determines whether or not the module information in the module information storage unit 3364 includes image data identification information in which the value of VE_id is equal to the value of the variable new_VE_id (S386).
2). If not included, the process returns to S3860. If it is included, the reception control unit 3364 reads “stream_id” and “c” of the image data from the module information table.
component_tag ”. And
The variable cur_V in the system information table storage unit 134
E_service_id, cur_VE_event
_Id with reference to the PMT corresponding to the event identified in the same manner as in the first embodiment.
The value of the PID corresponding to the value of “component_tag” is obtained, and these stream_id and the value of the PID are obtained.
The filter condition of the image data in the filter condition storage unit 131 is set, and the filter condition is set to a start state.
The TS decoder unit 123 separates one frame of image data according to the filter condition, outputs the image data to the AV decoder unit 124, and notifies the reception control unit 3362. Upon receiving the notification of the separation of one frame, the reception control unit 3362 sets the filter condition of the image data to the stop state (S
3864).

[0203] The reception control section 3362 includes the AV decoder section 1
24, the TS decoder unit 123 acquires the value of the identifier of the image data described in the private area of the separated image data, and compares it with the value of the variable new_VE_id (S3866). If they match, go to S3868,
If they do not match, the process returns to S3860. Reception control unit 336
2 instructs the AV decoder unit 124 to decode the separated image data. The AV decoder unit 124
The decoder unit 123 decodes the separated image data,
Display on the display unit 1298 via the reproduction unit 128 (S
3868).

The reception control unit 3362 controls the variable cur_VE
_Id is set to the value of the variable new_VE_id (S38)
70), the image data reproduction process ends. 2-4. Conclusion As described above, in the present embodiment, a module information table describing a plurality of pieces of identification information of image data is multiplexed for each of a plurality of image data and transmitted. Data receiving device 33
61 can separate and reproduce desired image data according to the identification information of the image data in the module information table. Therefore, as in the case of the first embodiment, it is possible to provide an interactive program according to a user operation using a one-way communication path. 2-5. Others 2-5-1 In the present embodiment, the component_tag and the stream_id of each image data are included in the module information table.
However, as in the stream correspondence table of the first embodiment, the start reproduction time information “firsts” of each image data is included.
t_pts ”and end playback time information“ last_pt
s ”, and the reception control unit 3362 determines that the“ fi
A configuration in which acquisition is performed again when the setting of image data filter conditions is delayed with reference to the value of "rst_pts", or a configuration in which decoding of image data is stopped with reference to the value of "last_pts" Can also. 2-5-2 Further, in the present embodiment, an example has been described in which each content is a combination of image data and navigation information, but audio data may be further combined. If audio data is included, the data transmission device 335
1 multiplexes the module information table with respect to the audio data as well as the image data and transmits the multiplexed module information table, and the data receiving device 3361 performs the audio data switching process in parallel with the image data switching process, and It may be configured to output to 130. The multiplexing process of the module information table of the audio data and the switching process of the audio data can be realized by the same methods as the multiplexing process of the module information of the image data and the switching process of the image data, respectively. Embodiment 3 3-1. Embodiment 3 of Configuration A digital broadcasting system according to a third embodiment of the present invention
Since the digital broadcasting system has substantially the same configuration as that of the digital broadcasting system according to the first embodiment, description will be made using the configuration diagram of the digital broadcasting system shown in FIG. 4 as it is.

[0205] The difference between the present embodiment and the first embodiment is that audio data is stored in presentation information storage unit 107 of transmission data storage unit 102. Therefore, in the present embodiment, the content includes image data, audio data, and navigation information. Hereinafter, only the components unique to the present embodiment different from the first embodiment will be described. 3-2. Data transmission device 101 3-2-1. Transmission data storage unit 102 3-2-1-1. Presentation Information Storage Unit 107 The presentation information storage unit 107 includes a data receiving device 121 in addition to the image data of the first embodiment.
The audio data to be reproduced together with the image data as BGM (background music), narration audio or the like is stored. The audio data 2901 of the file name “BGM0.m2a”, the audio data 2902 of the file name “BGM1.m2a”, and the audio data 2903 of the file name “BGM2.m2a” shown in FIG. Are examples of voice data, and B
This is a music source played as GM. 3-2-1-2. Structure Information Storage Unit 109 The structure information storage unit 109 stores the structure information table 30 shown in FIG.
01 and entry information 3002 are stored. The structure information table 3001 includes a content number 3 for each content.
003, and file names of the image data 3004, the audio data 3005, and the navigation information 3006 are recorded corresponding to the content number. In addition to the structure information table 501 of the first embodiment, audio data 3
Item 005 is added, and audio data to be reproduced simultaneously for each content is specified. For example, in the structure information table 3001, the audio data 290 having the file name “BGM0.m2a” for the content with the content number 1
1 specifies that the audio data 2902 having the file name “BGM1.m2a” is reproduced in the content of the content number 5. 3-2-2. Multiplex Information Storage Unit 104 The multiple information storage unit 104 stores the multiple information table 31 shown in FIG.
01 is stored. The multiplex information table 3101 includes, in addition to the multiplex information table 601 of the first embodiment, “AE_component_Bitrate 0” 31 of the audio data.
02, "AE_component_pid0" 310
3, "AE_component_Bitrate1"
3104, “AE_component_pid1” 3
105, "AE_component_Bitrate
2 "3106," AE_component_pid "
2 "and 3107 are newly given.
These values indicate a transmission rate assigned when multiplexing the audio data 2901, the audio data 2902, and the audio data 2903 into the MPEG2 transport stream, and a PID value, respectively. 3-2-3. Data multiplexing section 103 3-2-3-1. Multiplexing Control Unit 110 When activated by the transmitting unit 106, the multiplexing control unit 110 reads out the above-described structure information table 3001 and multiplexing information table 3101, and stores an image data identifier VE_
Create a content identifier assignment table to which id, navigation information identifier NE_id, etc. are assigned. FIG. 42 shows the content identifier assignment table 3201. Multiplex control unit 1
Reference numeral 10 denotes an AE_svc_id (voice data service identifier) 3202 and AE_event_ which are blank in the content identifier assignment table 701 in the first embodiment.
ID (audio data event identifier) 3203 and “service_i” from the multiplex information table 3101
d ”and“ event_id ”are read and written. Further, the multiplexing control unit 110 replaces the writing of the value of “AE_id (audio data identifier)” with “AE_c
omp_tag (audio component tag) "3
Write the value of 204. “AE_comp_tag” has a one-to-one compo with the PID of the component that multiplexes the audio data assigned in the multiplex information table 3101.
The value of “nent_tag” is assigned and written. Here, for example, compo for PID “0x0085”
The dent_tag “0x00” is replaced with the PID “0x008”.
6 "for component_tag" 0x01 "
Is assigned. The value of AE_comp_tag,
The correspondence with the PID value is given by PMT. Here, AE_comp_tag32 is used instead of AE_id.
04 is given because the audio data 2901, the audio data 2902, and the audio data 2903 are background music or narration audio that are continuously reproduced, so that only one is multiplexed on one component. In the present embodiment, component_t is added to the audio data of the background music.
ag, but also stream_i
d may be assigned.

In the multiplexing control section 110, the same display image information identifier assignment table as the display image information identifier assignment table 801 of the first embodiment is created. 3-2-3-2. Navigation information table generator 1
13 Upon receiving an instruction to create a navigation information table from the multiplex control unit 110, the navigation information table generation unit 113 reads out the navigation information (see FIG. 6) stored in the navigation information storage unit 108, and converts the hyperlink table. Content identifier assignment table 32 when included
With reference to 01, a navigation information table is created. FIG. 43 shows the generated navigation information table 3301 of the file name “NVT (5)”. The difference from the navigation information table 1001 of the first embodiment is that the identifier of the audio data is changed to AE_id and AE_comp_ta
g, and the multiplexing control unit 110 assigns the component_ta assigned to the PID of the component to which the audio data of the background music is multiplexed.
The point is to write the value of g. 3-2-3-3. Multiplexing Unit 114 The multiplexing unit 114 includes a stream correspondence table VET (N) in the transport stream as in the first embodiment.
Image data VE (N), navigation information table NE
(N) is multiplexed. First, the multiplexing start position wp =
0, “AE_compon” in the multiplex information table 3101
ent_Bitrate ”, bit rate“ 0.5 Mbps ”,“ AE_component_p ”
The multiplexing control unit 110 instructs to multiplex the audio data 2901 with the PID “0x0085” given by “id”. Similarly, it is instructed to multiplex audio data 2902 with PID “0 × 0087” and audio data 2903 with PID “0 × 0087”. Multiplexer 11
As shown in a transport stream 3501 in FIG. 44, in addition to the transport stream 1701 of the first embodiment, a stream 3502 of audio data 2901, a stream 3503 of audio data 2902,
The stream 3504 of the audio data 2903 is multiplexed. 3-2-4. System Information Table Generating Unit 105 The system information table generating unit 105 generates a system information table and a PMT as in the first embodiment.
FIG. 45A shows the generated PMT3401. The multiplexing control unit 110 refers to the multiplexing information table 3101 in addition to the PMT 1501 of the first embodiment, and
PID of the component that multiplexes 1 “0 × 008
5 "," 0x0086 "," 0x0087 ", and the value" 0x03 "of" stream_type "indicating that the data multiplexed on this component is audio data.
And the component_tag of this component
Are “0x00”, “0x01”, and “0x0”, respectively.
Stream_identifier indicating that it is "2"
er_descriptor is newly described, and the Entry_Descriptor 34 of FIG. 45B is further described.
02, the identifier “entry_AE_com” of the audio data to be reproduced when the event is first selected.
“0x01” is described as “p_tag”. 3-2-5. Transmitter 106 FIG. 46 shows a transport stream 3601 transmitted from the transmitter 106. In addition to the transport stream 1801 in the first embodiment, the audio data 2901 is a stream 3502 to which a PID “0 × 0085” is added, and the audio data 2902 is a PID.
The audio data 2903 is multiplexed as a stream 3504 to which PID "0x0087" is added as a stream 3503 to which "0x0086" is added. 3-2-6. Operation of Data Transmitting Apparatus 101 Next, an operation of the data transmitting apparatus 101 according to the present embodiment, which is different from that of the first embodiment, will be briefly described. After S1918 (FIG. 23) of the first embodiment, multiplexing control section 110 sets bit rate “0.5 Mbps”, P
The ID “0 × 0085” and the multiplexing start position wp “0” are notified to the multiplexing unit 114, and the multiplexing of the audio data 2901 is performed with the bit rate “0.5 Mbps” and the PID “0 × 008”.
6 ”, the multiplexing start position wp“ 0 ”is notified to the multiplexing unit 114, and the multiplexing of the audio data 2902 is performed, and the bit rate“ 0.5 Mbps ”, the PID“ 0 × 0087 ”, and the multiplexing start position wp“ 0 ” To the multiplexing unit 114, and instructs the multiplexing unit 114 to multiplex the audio data 2903.

[0207] The multiplexing unit 114 multiplexes the transport stream according to the instruction from the multiplexing control unit 110. 3-3. Data receiving device 121 3-3-1. Reception control unit 126 The reception control unit 126
1, when an event in which the transmission data stored in the transmission data storage unit 102 is multiplexed is selected, the first embodiment is performed.
In the same way as in the case of, the image data of the entry content and the navigation information table are acquired and reproduced, and the stream_identifier_descr having the component_tag equal to the value “0x01” of “entry_AE_comp_tag” with reference to the PMT3401 in the system information table storage unit 134.
PID of a component to which an “iptor” is attached and the type of data to be transmitted is a value “0x03” representing audio data
To obtain the value “0x0086”. Then, the reception control unit 126 sets “0x0086” to “PID” of the filter condition of the audio data in the filter condition storage unit 131, and sets the filter condition to a start state.

As a result, the display screen 2301 shown in FIG. 27A is displayed on the display unit 129, and the file name “BGM1.m” shown in FIG.
The audio data 2902 of “2a” is reproduced as BGM. Even when the user inputs an operation signal, the reception control unit 126 performs processing of acquiring and reproducing new image data and navigation information as in the first embodiment, and performs audio processing from the hyperlink table of the navigation information table. The data identifier is taken out and the filter condition storage unit 131
, Processing for acquiring and reproducing new audio data is also performed. Thereby, for example, in the state where the display screen 2301 shown in FIG. 27A is displayed on the display unit 129 and the audio data 2902 is output from the audio output unit 130 as BGM, the button “Tokyo” is selected in the whole country. Is displayed. Here, when the user inputs the “confirm” key, the VE_id “0” is displayed on the display unit by the hyperlink table in the same manner as in the first embodiment.
The image data of the weather forecast for Tokyo of × 0001 ”is shown in FIG. 27C.
Is displayed on the display screen 2303 as shown in FIG. At the same time, the navigation information table “NVT (5)” in FIG.
“A” of the audio data associated with the content of the switching destination designated in the hyperlink table 3302 of 3301
According to the value “0x00” of “E_comp_tag”, FIG.
The audio data 2901 of the file name “BGM0.m2a” shown in FIG. 9 is reproduced as BGM. 3-3-2. Operation of data receiving apparatus 121 3-3-2-1. Overall Operation Next, an operation specific to the present embodiment of data receiving apparatus 121 will be described with reference to the flowchart in FIG.

[0209] Reception control section 126 corresponds to Embodiment 1 S25.
02 (S3702), and if not,
The same processing as in S2508 is performed (S3704), and S251 is executed.
0 and the variable cur_AE_comp_ta
The value of g is cleared (S3706). Next, processing similar to the image data switching processing in S2504 (S3708)
And processing similar to the navigation information switching processing in S2506 (S3712), and audio data switching processing (S3710).
3710) in parallel, and the process ends. 3-3-2-2. Audio Data Switching Process Next, the audio data switching process in S3710 will be described with reference to FIG.
This will be described in detail with reference to the flowchart of FIG.

[0210] The reception control unit 126 sets the variable new_AE_
service_id and variable cur_AE_series
the value of e_id matches and the variable new_AE_ev
It is determined whether the values of ent_id and the variable cur_AE_event_id match (S3802). If the result is affirmative, it is determined whether the value of the variable new_AE_comp_tag matches the value of the variable cur_AE_comp_tag (S3804). If the determination is affirmative, the process ends. If the determination is negative, the process proceeds to S3810.

When the result in S3802 is NO, the variable new
_AE_service_id, variable new_AE_e
The PMT of the event identified by the event_id is acquired (S3806), and the variable cur_AE_service_
The value of the variable new_AE_service_id is set to id, and the variable n is set to the variable cur_AE_event_id.
ew_AE_event_id value is set (S38
08), the process moves to S3810.

In S3810, reception control section 126
Is the variable new in the system information table storage unit 134
_AE_service_id, variable new_AE_e
PID of a component having a component_tag equal to the value of a variable new_AE_comp_tag and referring to the PMT of the event identified by vent_id, and in which the type of data to be transmitted is audio data
Is acquired, and set as a filter condition of audio data in the filter condition storage unit 131, and set to a start state (S381).
0). Next, the value of the variable new_AE_comp_tag is set in the variable cur_AE_comp_tag (S3).
812), the process ends. 3-3-3. Conclusion As described above, in the present embodiment, the data transmitting apparatus 101 transmits the audio data in association with the image data and the navigation information, and
Reference numeral 21 reproduces the associated audio data in addition to displaying the image data and the navigation information separately. Therefore, in the interactive program shown in the first embodiment, B
GM, narration sound, and the like can be reproduced together. Since audio data can be associated with each content, it is possible to switch to different background music or narration audio for each content. 4. Others The data receiving apparatus 121 and the like according to the first to third embodiments are stored in a recording medium, for example, a ROM card as a program capable of exhibiting the function of the reception control unit in the configuration diagram shown in FIG. By recording the data and inserting the ROM card into the card slot of the data receiving apparatus having no such functions, the data receiving apparatus 12 according to the present invention is provided.
1 can be the same device.

[0213]

[0214]

[0215]

[0216]

[0219]

[0218]

[0219]

As described above, according to the present invention, a digital broadcast apparatus for realizing pseudo dialogue using digital broadcasting, a digital broadcasting system for realizing pseudo dialogue with digital broadcasting, respectively the image data comprising an image information storage means an identifier stores a plurality of image data attached, and a multiplexing transmission unit for repeatedly transmitting a plurality of the image data as a multiplexed stream, the multiplexed transmission means, the image a reading unit for sequentially reading the image data stored in the information storage unit, the total number of the image data not by one or more
Holding a full number of different first image stream identifiers,
One of them is sequentially assigned to the found image data
The image stream identifier assigning unit is provided for each image data .
The equivalent value image data identifier that, the corresponding image data
Split image and correspondence table generation unit, a first image stream identifier for generating an image correspondence table including a first image stream identifier equivalent to the second image stream identifier assigned to the
Wherein a plurality of image data that has been hit, and a plurality of image correspondence table generated by the image correspondence table generation unit, each of the image
Image correspondence table, out in front over a predetermined time of the corresponding image data
The same between the image correspondence table and the corresponding image data.
Different images assigned a first image stream identifier of
Multiplexing sequentially so that image data does not appear, and sending repeatedly
Since the digital broadcast receiving apparatus has a multiplexing unit , the digital broadcast receiving apparatus can reliably extract image data with reference to the image correspondence table. The first, second image strike
You can use maneuvering on the stream identifier, less the first image string
Use to enable the over-time identifier, when the image data is large,
Be previously designated by the same first image stream identifier to the image data, the correspondence between image data and image correspondence tables can be ensured.

[0220] In the digital broadcasting device, the image
The image stream identifier allocating unit includes a plurality of different first image streams.
Holds the stream identifier and adds it to the read image data.
Are sequentially assigned, and the multiplexing units each
Time between the image correspondence table and the corresponding image data
To which a different first image stream identifier is assigned to
An image including image data and a different second image stream identifier.
It is multiplexed so that the image correspondence table appears
Thus, transmission of image data can be made efficient.

Further, the multiplexing unit is provided for each image pair.
Multiplexing between the table and the corresponding image data at a fixed time
Different possible first image stream identifiers are assigned
Multiplex empty data when there is no image data
With this configuration, it is possible to guarantee that the transmission time interval between the image data and the corresponding image correspondence table is equal to or greater than a certain value. Thus, desired image data can be reliably extracted by the digital broadcast receiving device. Also, digital data broadcasting system, the indicated image data of a link destination of the image data and the control information, the link indicated by the pair of the image data identifier of the image data of the link destination and a control information identifier for the control information destination a control information storage means information that stores control information including multiple, further comprising a correspondence information storage means for storing correspondence information associating the said image data and the control information, the multiplexed transmission The means repeatedly transmits the control information together with the image data as a multiplexed stream, the reading unit reads out the control information associated with the image data with the corresponding information, and the multiplexing unit reads the control information by the reading unit. read sequentially multiplexing the image data and control information, and configured to write allocate the control information identifier for the control information.

[0222] In the digital broadcasting apparatus, the multiplexing unit, when multiplexing the image data and the control information, has a bit rate corresponding to a ratio between the data amount of each image data and the information amount of the corresponding control information. A band allocating unit that allocates each image data and control information corresponding to the multiplexing unit, since the multiplexing unit is configured to multiplex the image data and the control information at the respectively assigned bit rate,
Since the image data and the corresponding control information are transmitted almost simultaneously, they can be extracted almost simultaneously in the digital broadcast receiving apparatus.

In the digital broadcasting device, the multiplexing unit may further include, when multiplexing the image data and the control information, a bit corresponding to a ratio between a data amount of each image data and an information amount of the corresponding control information. A bandwidth allocating unit for allocating a rate to each image data and control information corresponding to the multiplexed stream, wherein the multiplexing unit multiplexes the image data and the control information at the respectively assigned bit rates. The multiplex start position of each image correspondence table, each image data, and each control information described above becomes clear.

In the digital broadcasting apparatus, the first image stream identifier and the second image stream identification
The child is said to be the same. In addition, the first image strike
The stream identifier and the second image stream identifier are MP
EG2 (Moving Picture Experts Group2) standard
Packet identifier (PID) . Further, in the digital broadcasting device, the first image stream identifier and the second image stream identifier are M
Since the combination is a combination of a stream identifier (stream_id) and a packet identifier (PID) defined in the PEG2 (Moving Picture Experts Group 2) standard, image data can be extracted in a digital broadcast receiving apparatus without referring to a correspondence table. .

[0225] Further, in the digital broadcasting system, the first
One image stream identifier is defined in the MPEG2 standard
A packet identifier (PID), the second image stream
Is the DVB (Digital Video Broadcasting) standard
Component tag (component
_Tag), and the multiplexing and transmitting means transmits the packet identification
Correspondence table in which correspondences between components and component tags are described
Is transmitted repeatedly, so that the image data can be indirectly specified by referring to the image correspondence table, and even if the packet identifier assigned to the image data is changed in the digital broadcasting system, the digital broadcasting reception in the apparatus, the image data can be reliably extracted first image stream identification <br/> another child easily acquired by referring to the correspondence table.
In the digital broadcasting device, the first image stream
The frame identifier is MPEG2 (Moving Picture Experts G
roup2) stream identifier (stre
am_id) and a packet identifier (PID)
And the second image stream identifier is MPEG
2 stream identifier (stream_
id) and DVB (Digital Video Broadcasting) standard
Defined component tag (component_
tag), and the multiplex transmission means
Indicates the correspondence between the packet identifier and the component tag.
The listed correspondence table is repeatedly transmitted. Ma
In the digital broadcasting device, the image correspondence table is M
PEG2 (Moving Picture Experts Group2) standard
Multiplexed as a private section
The image correspondence table identifier is table_id_extenti.
on. In addition, digital broadcasting equipment
The image correspondence table generation unit is configured to store the image correspondence table
At the start of playback to calculate the playback start time of the corresponding image data
The time calculation unit and the calculated playback start time are written in the image correspondence table.
Writing section. Also, digital
In the broadcast system, the reproduction start time is
MPEG2 (Moving Picture) of the first frame of the image data
Experts Group 2) PTS (Presentati
on Time Stamp). In addition,
In the digital broadcasting device, the image correspondence table generation unit,
Calculate the playback end time of the image data corresponding to the image correspondence table
The playback end time calculation unit to calculate the playback end time
A writing unit for writing in the image correspondence table.
You. Also, in the digital broadcasting device, when the reproduction ends.
The time is MPEG2 of the last frame of the corresponding image data.
(Moving Picture Experts Group2)
PTS (Presentation Time Stamp) value
ing.

[0226] In the digital broadcasting apparatus, the multiplex transmitting means may further include, when multiplexing the image data read by the reading section, an image data identifier for adding an image data identifier to a private area of the image data. Since the digital broadcast receiving apparatus is provided with the identifier adding unit, it can be determined whether or not the desired image data has been accurately extracted by the digital broadcast receiving apparatus.

[0227] Further, in the digital broadcasting system, before Kio <br/> duplex unit, between the image data corresponding to the image correspondence table after multiplexing an image correspondence table until you multiplexing Furthermore, since the same image correspondence table is read and multiplexed a plurality of times, the digital broadcast receiving apparatus can reproduce image data at high speed when the load is light.

In the digital broadcasting device,
And stores a plurality of voice data with voice data identifiers
Further comprising a voice information storage means for performing the multiplexing transmission.
Means for converting the plurality of audio data into a multiplexed stream.
And the multiplex transmission means further transmits the sound.
Sequentially read voice data stored in voice information storage means
And the difference between the number of
Holds the first audio stream identifier
Audio stream that sequentially assigns one of them to audio data
And a voice identifier corresponding to each voice data.
Value equivalent to the data identifier and assigned to the corresponding audio data
Second audio stream equivalent to the first audio stream identifier
Voice correspondence table for generating a voice correspondence table including a stream identifier
A generator and a first audio stream identifier are assigned
Generated by the plurality of voice data and the voice correspondence table generation unit
The multiple voice correspondence tables that have been
Appears more than a certain time before the corresponding audio data,
Between the voice correspondence table and the corresponding voice data, the same first sound
Different audio data assigned voice stream identifier
Multiplexed sequentially so that no
Since the multiplexing unit is provided , audio data in addition to image data can be subjected to interactive operation in the digital broadcast receiving apparatus. In addition, digital broadcasting devices
Digital broadcasting that realizes pseudo-conversation using digital broadcasting
Devices, each having an image data identifier.
Image information storage means for storing a number of image data;
Repeat the number of the image data as a multiplexed stream
Multiplex transmission means for transmitting, said multiplex transmission means
Represents image data stored in the image information storage means
Reading unit for sequentially reading image data,
Holding a full number of different first image stream identifiers,
One of them is sequentially assigned to the found image data
The image stream identifier assigning unit is provided for each image data.
Uses a value equivalent to the image data identifier
The first image stream assigned to the corresponding image data.
Including a second image stream identifier equivalent to the stream identifier
An image correspondence table generation unit for generating an image correspondence table;
The plurality of image data to which a trim identifier is assigned
And a plurality of image correspondences generated by the image correspondence table generation unit.
The table and each image correspondence table correspond to the corresponding image data
Appears more than a certain time before and the image corresponding to the image correspondence table
The same first image stream identifier is assigned between data.
Sequentially so that different image data assigned does not appear
A multiplexing unit for multiplexing and repeatedly transmitting,
One image stream identifier is MPEG2 (Moving Pictu
re Experts Group 2) Stream identification defined in the standard
Child (stream_id) and packet identifier (PID)
And the second image stream identifier
Is a stream identifier (s) defined in the MPEG2 standard.
stream_id) and DVB (DigitalVideo Broadcast)
ing) Component tag (comp
onent_tag), and the multiplex
The transmitting means comprises a packet identifier and a component tag.
The image correspondence table is repeatedly transmitted by the MPE.
G2 (Moving Picture Experts Group2) standard
Multiplexed as a private section
The response table identifier is table_id_extension.
It is to be. In addition, digital broadcasting devices
Digital broadcasting that realizes simulated dialogue using digital broadcasting
Transmission devices, each having an image data identifier
Image information storage means for storing a plurality of image data;
Repeating a plurality of the image data as a multiplexed stream
And multiplex transmission means for performing transmission.
The column stores the image data stored in the image information storage means.
Reading unit for sequentially reading data, and the total number of image data for one or more
Holding a number of different first image stream identifiers less than
One of them is sequentially assigned to read image data
Image stream identifier allocator for each image data
And the corresponding image data identifier.
Equivalent to the first image stream identifier assigned to the
Generating an image correspondence table including a second image stream identifier;
And the first image stream identifier is
The plurality of assigned image data and the image correspondence table
The plurality of image correspondence tables generated by the generation unit are
The image correspondence table is displayed at least a certain time before the corresponding image data.
Appear between the image correspondence table and the corresponding image data.
Different assigned one first image stream identifier
Multiplex sequentially and repeat so that no image data appears
A multiplexing unit for transmitting the first image stream.
Besshi is MPEG2 (Moving Picture Experts Group)
2) stream identifier that is defined in the standard (stream
_Id) and the packet identifier (PID)
And the second image stream identifier is an MPEG2 standard.
A stream identifier (stream_i)
d) and DVB (Digital Video Broadcasting) standard
Component tag (component_t
ag), wherein the multiplex transmission means comprises:
Repeat the correspondence table between packet identifiers and component tags.
The image correspondence table is stored in MPEG2 (Moving P
icture Experts Group 2) The privacy defined in the standard
Section, and the image correspondence table identifier is:
table_id_extension and the image
In the image correspondence table, the reproduction start time and the reproduction end time of the image are shown.
The playback start time is described as
The PTS (Pre
sentation Time Stamp).
Is the MPEG2 standard of the last frame of the corresponding image data.
Prescribed PTS (Presentation Time Stamp) value
It is to be.

[0229]

[0230]

[0231]

[0232] Also, the digital broadcasting apparatus which realizes a pseudo-dialogue by using a digital broadcast, a digital broadcast apparatus for realizing pseudo dialogue using a digital broadcast, its
Image information storage means for storing a plurality of image data to which image data identifiers are respectively attached, and image data and control information of a link destination of the image data, and an image data identifier of the image data of the link destination Control information storage means storing a plurality of control information to which a control information identifier including a link destination information indicated by a set of a control information identifier of the control information and the image data is associated with the control information Correspondence information storage means for storing correspondence information, and multiplex transmission means for repeatedly transmitting a plurality of the image data together with the control information as a multiplexed stream, wherein the multiplex transmission means comprises the image data and the and sequentially reading the read unit and a control information associated thereto in the corresponding information, the number of different first scan of less than the total number of image data in one or more
Holding the stream identifier, sequentially assigned to one of them to the image <br/> image data read by the reading unit, an identifier assignment unit to assign the control information identifier in the control information, the image data
A value equivalent to the corresponding image data identifier for each and the first image stream identifier assigned to the corresponding image data
And a second image stream identifier equivalent to the above, and an image correspondence table in which the reproduction time information of the corresponding image data is written.
An image correspondence table generation unit that generates a first image stream identification
The plurality of image data to which the child is assigned, and control information
A plurality of control information identification information is assigned, and a plurality of image correspondence table generated by the image correspondence table generation unit, it
Each image correspondence table appears a certain time or more before the corresponding image data and control information, and the image data corresponding to the image correspondence table.
Data, the same first image stream identifier is assigned.
To avoid the appearance of different image data
Since the multiplexing unit includes a multiplexing unit for multiplexing and repeatedly transmitting , the digital broadcast receiving apparatus can know time information at which image data should be reproduced.

[0233] In the digital broadcasting device, the image correspondence table generation unit calculates a time information at which image data corresponding to the image correspondence table is reproduced according to a predetermined calculation formula; A reproduction time writing unit that writes the reproduction time information calculated by the calculation unit into the image correspondence table;
Image data extraction and playback time management can be performed accurately.

[0234] Also, the digital broadcasting apparatus which realizes a pseudo-dialogue by using a digital broadcast, a digital broadcast apparatus for realizing pseudo dialogue using a digital broadcast, its
Image information storage means for storing a plurality of image data to which image data identifiers are respectively attached, and image data and control information of a link destination of the image data, and an image data identifier of the image data of the link destination Control information storage means storing a plurality of control information to which a control information identifier including a link destination information indicated by a set of a control information identifier and control information identifier of the control information, and associating the image data with the control information Correspondence information storage means for storing correspondence information, and multiplex transmission means for repeatedly transmitting a plurality of the image data together with the control information as a multiplexed stream, wherein the multiplex transmission means, the image data and the a reading unit for sequentially reading out the control information associated to the corresponding information, the first stroke of different number less than the total number of image data in one or more
Read image data holding image stream identifier
One of them is sequentially assigned to the
An identifier assigning unit for assigning an identifier , and a first image stream assigned to each of the plurality of image data,
A module information generation unit for generating module information including the over arm identifier equivalent to the second image stream identifier for each of the plurality of image data, the assignment first image stream identifier
The plurality of image data obtained and the module information
The module information generated by the generation unit is
Information is issued more than a certain time before the corresponding
Between the module information and the corresponding image data
A first image identical to each of the plurality of image data
Different image data assigned a stream identifier
Multiplexing, multiplexing sequentially so that they do not appear, and repeatedly transmitting
Since the digital broadcast receiving apparatus includes the conversion unit , the digital broadcast receiving apparatus can reliably extract the image data with reference to the module information.

[0235]

[0236]

[0237]

[0238]

[0239]

A digital broadcast receiving apparatus for receiving a digital broadcast in which a plurality of image data are repeatedly transmitted ,
A digital broadcast receiving apparatus for receiving a digital broadcast in which a plurality of image data is repeatedly transmitted, wherein the image data is provided with a first image stream identifier , and the plurality of the image data are multiplexed. transmitted as a stream, the multiplexing stream is subjected to image data identifier and the equivalent in the corresponding image data as an image correspondence table identifier <br/>, the second image stream of the corresponding image data
The image correspondence table describing the system identifier is multiplexed,
The image correspondence table is also transmitted repeatedly like the image data, and a receiving unit for receiving the digital broadcast, an extracting unit for extracting one image data from the received digital broadcast,
Storage means, reproduction means for reproducing the extracted image data, operation means for accepting a user's selection operation, and extraction control means for setting extraction conditions in the extraction means based on a user operation; has an image correspondence table extraction unit for extracting an image correspondence table image correspondence table identifier is attached to match the set extraction condition from the multiplexed stream, wherein the storage unit, the extracted image correspondence table An image correspondence table storage unit for storing, the operating unit includes a designation receiving unit that receives an operation of switching designation from image data being reproduced by the reproducing unit to designated image data,
The extraction unit further matches the set extraction condition.
And an image data extraction unit for extracting the image data, the extraction control means includes an extraction condition setting unit for setting image correspondence table identifier of the image data identifier and the equivalent in image data designated as the extraction condition, the Stored in the image correspondence table storage
Of the second image stream described in the image correspondence table
Reads an identifier and reads the read second image stream identifier
Image data for setting extraction conditions in the extraction means using
An extraction control unit, wherein the extraction unit includes one image data
, The extraction of the image data is stopped .

[0241]

[0242] In the digital broadcast receiving apparatus, the same first image stream identifier is repeatedly added to different image data in the image data, and the reproducing means outputs the image data extracted by the image data extraction unit. It has an identifier extracting unit for extracting an image data identifier included in the data and recorded in the private area of the image data,
The extraction control unit further includes an image data determination unit that determines whether the image data identifier extracted by the identifier extraction unit matches a specified image data identifier, and determines that the image data determination unit does not match. A reproduction stop instruction unit for giving a reproduction stop instruction to the reproduction unit; and an image for instructing the image correspondence table extraction unit to extract an image correspondence table when the reproduction stop instruction unit gives a reproduction stop instruction. Since there is provided a correspondence table extraction instructing unit, even when the same first image data identification information is attached to different image data, the desired image data is appropriately extracted when other than the desired image data is extracted. You can do it.

[0243] In the digital broadcast receiving apparatus, the extraction control means may include an extraction stop instruction unit for instructing the image data extraction unit to stop extracting the image data when the image data determination unit determines that they match. Therefore, it is possible to prevent another different image data from being extracted after the desired image data is extracted. In the digital broadcast receiving apparatus, the image correspondence table describes a start reproduction time of corresponding image data, and the reproduction unit includes:
The apparatus further comprises a clock section for counting time, wherein the reproducing means decodes and reproduces the extracted image data, and when decoding of one image data is completed, notifies the extraction control means of the completion of decoding. The extraction control unit further includes: a start time determination unit configured to determine whether or not there is a notification of completion of decoding from the reproduction unit before a start reproduction time of the image data described in the image correspondence table; When it is determined that there is no determination unit, the image data extraction unit instructs to stop the extraction of the image data, and the image correspondence table extraction unit includes an extraction instruction unit that instructs the extraction of the image correspondence table, It is possible to prevent the image data from being reproduced halfway.

[0244] In addition, in the digital broadcasting receiving apparatus, before
The first image stream identifier is defined in the MPEG2 standard.
Packet identifier PID assigned to the second image storage device.
The stream identifier is a component defined in the DVB standard.
Tag (component_tag).
The weighted stream contains component tags and packet identification.
Correspondence table describing correspondence with Besshi is multiplexed and repeated
And the extraction means extracts the correspondence table.
The image data extraction control unit refers to the correspondence table.
The second image stream identifier to identify the first image stream.
It is converted to another and the extraction condition is set in the image data extraction unit.
Since the be constant, it can be extracted reliably image data multiplexed into the multiplexed stream in compliance with the MPEG2 standard.

In the digital broadcast receiving apparatus, the first image stream identifier is defined by the MPEG2 standard.
And the al stream identifier (stream_id) packet identifier (PID), said second image stream
Beam identifier defined et component tag set et stream identifier and DVB standards MPEG2 standard (c
component_tag), and the multiplexed stream includes a component tag and a packet identifier.
The correspondence table in which the correspondence is described is multiplexed and transmitted repeatedly, and the extracting means extracts the correspondence table, and the image data extraction control unit refers to the correspondence table and refers to the second image stream identifier. Is converted into a first image stream identifier , and an extraction condition is set in the image data extraction unit. In the digital broadcast receiving apparatus, the first image stream identifier and the second image stream
The identifier is the same, the image data extraction control unit,
Since the setting the second image stream identifier read as extraction condition to said extraction means, by setting the second image data identifier described in the image correspondence table as the extraction condition, the desired image data Can be extracted.

[0246] In the digital broadcast receiving apparatus, the image correspondence table describes a reproduction end time of the corresponding image data, and the reproduction means further includes a clock unit for counting time. The extraction control means further reproduces the image data described in the image correspondence table.
An end time determining unit that determines whether an end time has been reached; and when the end time determining unit determines that the reproduction end time of the image data has been reached, instructs the image data extracting unit to stop extracting image data. And an extraction stop instructing unit that performs the extraction, it is possible to prevent extraction of image data whose reproduction time has passed. In the digital broadcast receiving device,
The image correspondence table is based on the priority defined by the MPEG2 standard.
Multiplexed as a bait section,
The case setting unit sets table_id as an image correspondence table identifier.
_Extension is set.

A digital broadcast receiving apparatus for receiving a digital broadcast in which a plurality of linked contents composed of image data and control information associated with each image data is repeatedly transmitted as a whole, The control information includes link destination information indicating image data of another link destination linked with the corresponding image data, and the image data is provided with a first image stream identifier ,
To the control information, the control information identifier has been assigned, and a control information identifier for identifying the control information of the image data identifier and destination identifies the image data of the link destination is described as the link destination information, The plurality of image data and the control information corresponding thereto are transmitted as a multiplexed multiplexed stream, and the multiplexed stream includes
Labeled image data identifier and the equivalent in the corresponding image data as an image correspondence table identifier, an image correspondence table and an end reproduction time is described of the image data corresponding to the second image stream identifier of the corresponding image data Multiplexed,
This image correspondence table is also repeatedly transmitted like image data, and includes a receiving unit for receiving a digital broadcast, and an extracting unit for extracting one image data and corresponding control information from the received digital broadcast, the extraction means includes an image correspondence table extraction unit for extracting an image correspondence table image correspondence table identifier is attached to match the set extraction condition from the multiplexed stream, the image data that matches the set extraction condition And a storage unit for storing the extracted control information. The storage unit has an image correspondence table storage unit for storing the extracted image correspondence table. And reproducing means for reproducing the extracted image data, wherein the reproducing means has a clock section for counting time and targets link destination information included in the control information. Operating means for receiving a user's selection operation, the operating means having a designation receiving unit for accepting an operation of designating switching from image data being reproduced by the reproducing means to linked image data, and With the control of the extraction means to extract the image data specified by the link destination information and the corresponding control information,
The link destination information of the control information stored in the storage unit is read out, and the extraction unit is controlled based on the image data identifier of the link destination image data switched and designated by the designation receiving unit and the control information identifier of the control information. includes an extraction control means for setting an extraction condition, the extraction control means includes an extraction condition setting unit for setting image correspondence table identifier <br/> image data identifier and the equivalent in image data as the extraction condition, the An end time determining unit that determines whether or not the reproduction end time of the image data described in the image correspondence table has been reached; and, after the extraction condition is set by the extraction condition setting unit, the end time determining unit until it is determined to have reached the playback end time of the data, and controls to extract the image data matching the image data extraction unit to set extraction condition from the multiplexed stream Is provided with the extraction state control unit, it extracts the image data after the elapse of time to be reproduced even image data that matches the extraction condition can be prevented.

A digital broadcast receiving apparatus according to the twenty-fifth aspect.
The apparatus further includes a plurality of audio data that are repeatedly transmitted.
Receiving a digital broadcast, wherein the audio data includes a first audio
A stream identifier is attached, and the plurality of audio data are
Transmitted as a multiplexed multiplexed stream,
The audio data of the corresponding audio data is included in the weighted stream.
A value equivalent to the identifier is added as the voice correspondence table identifier,
The second audio stream identifier of the corresponding audio data is described.
The audio correspondence table is multiplexed, and this audio correspondence table is also
Like the voice data, it is transmitted repeatedly,
The stage further includes one audio data from the received digital broadcast.
And the reproducing means further outputs the extracted audio data.
And the extraction means further comprises a set extraction strip.
A voice correspondence table with a voice correspondence table identifier that matches
It has a voice correspondence table extraction unit that extracts from multiplexed streams.
The storage unit further stores the extracted voice correspondence table.
A voice correspondence table storage unit for storing the
Specified from the audio data reproduced by the reproducing means.
To accept the operation to switch to audio data
A receiving unit, wherein the extracting unit further includes a set extracting unit
Audio data extraction unit that extracts audio data that matches the conditions
And the extraction control means further comprises:
The voice correspondence table identifier with a value equivalent to the voice data identifier of
An extraction condition setting unit for setting as an output condition;
Described in the audio correspondence table stored in the table storage unit
The second audio stream identifier is read, and the read second
Using the audio stream identifier, the extraction means
And a voice data extraction control unit for setting the
The stage extracts audio data after extracting one audio data.
Since the cancellation is performed, audio data in addition to image data can be subjected to the interactive operation. Also,
Digital broadcasting in which multiple image data are repeatedly transmitted
A digital broadcast receiving apparatus for receiving the image data.
A first image stream identifier is assigned to each of the
The image data is multiplexed as a multiplexed stream.
Transmitted, and the multiplexed stream contains the corresponding image data.
The value equivalent to the image data identifier of the data
And a second image stream of the corresponding image data
The image correspondence table in which the system identifier is described is multiplexed,
The image correspondence table be similarly repeatedly transmits the image data
And a second image stream identifier and a first image stream.
The correspondence table between the stream identifier and the
Receiving means for receiving the broadcast, and from the received digital broadcast
Extracting means for extracting the first image data, storage means,
Playback means for playing back the output image data;
Operating means for accepting a selection operation and user operation
Extraction control means for setting extraction conditions in the extraction means;
In addition, the extraction means may select an image matching the set extraction condition.
Multiplexing stream of image correspondence table with image correspondence table identifier
An image correspondence table extracting unit for extracting from a memory,
Is an image correspondence table storage unit that stores the extracted image correspondence table
And the operating means is being reproduced by the reproducing means.
To switch from image data to
The apparatus has a designation receiving unit that receives an operation, and the extracting unit includes:
Furthermore, image data that matches the set extraction conditions is extracted
An image data extraction unit for extracting,
An image pair with a value equivalent to the image data identifier of the fixed image data
Extraction condition setting unit that sets a table identifier as an extraction condition
And an image correspondence table stored in the image correspondence table storage unit.
Read the second image stream identifier described in
And using the read second image stream identifier
An image data extraction control unit for setting extraction conditions in the extraction means;
After extracting one image data,
Halting the extraction of image data and recognizing the first image stream;
The identifier is a stream identifier defined in the MPEG2 standard.
(Stream_id) and packet identifier (PID)
And the second image stream identifier is MPEG2
Stream identifier defined in the standard and DVB standard
Component tag (component_ta)
g), and the multiplexed stream includes a component
Mapping table that describes the correspondence between the event tag and the packet identifier
Are multiplexed and transmitted repeatedly, and the extracting means
Extracts this correspondence table, and outputs the image data
Refers to the correspondence table and the correspondence table, and refers to the second image scan.
Convert the stream identifier to a first image stream identifier
Setting extraction conditions in the image data extraction unit;
are doing. Also, multiple image data are repeatedly transmitted.
Digital broadcast receiver that receives digital broadcasts
The image data includes a first image stream identifier.
And the plurality of image data are multiplexed and multiplexed.
Stream and transmitted to the multiplexed stream.
Is a value equivalent to the image data identifier of the corresponding image data
As the image correspondence table identifier, and the corresponding image data
The image correspondence table in which the second image stream identifier of
It is multiplexed, and this image correspondence table is the same as image data
Reception that is repeatedly transmitted and receives digital broadcasting
Means for extracting one image data from the received digital broadcast.
Extraction means for outputting, storage means, and extracted image data
Means for playing back and accepting a user's selection operation
Operating means and extracting to the extracting means based on a user operation
Extraction control means for setting conditions, the extraction means
Is the image correspondence table identifier that matches the set extraction condition.
The image for extracting the attached image correspondence table from the multiplexed stream
An image correspondence table extracting unit, wherein the storage unit stores the extracted image;
An image correspondence table storage unit for storing an image correspondence table;
Means for converting the image data reproduced by the reproduction means
Accept the operation to switch to the specified image data
A designation accepting unit, wherein the extracting unit further comprises:
Image data extraction to extract image data that matches the extraction conditions
An output unit, wherein the extraction control unit outputs the specified image data.
Extract the image correspondence table identifier with a value equivalent to the image data identifier
An extraction condition setting unit to be set as a condition, and the image correspondence table
No. described in the image correspondence table stored in the storage unit
The two-image stream identifier is read, and the read second image
Using the image stream identifier, the extraction condition
An image data extraction control unit to be set;
Is extracting image data and then extracting image data
Stop and start of the corresponding image data in the image correspondence table.
The reproduction time is described, and the reproduction means further
A clock unit for counting the time, wherein the reproducing means comprises:
After decoding the extracted image data, it is reproduced and reproduced as one image data.
When decoding of the data is completed, the extraction control means
And the extraction control means further performs
Before the start playback time of the image data described in the table
Determine whether or not there is a notification of completion of decoding from the recording / reproducing means
It is determined that there is no start time determination unit and the start time determination unit.
When the image data extraction unit
And instructs the image correspondence table extraction unit to extract the image correspondence table.
And an extraction instructing unit for instructing the first image stream.
The stream identifier is a stream identifier defined in the MPEG2 standard.
Separator (stream_id) and packet identifier (PI
D), and the second image stream identifier is MP
Stream identifier and DVB standard defined in EG2 standard
Component tag (component
_Tag), and the multiplexed stream includes
Correspondence between component tag and packet identifier is described
The correspondence table is multiplexed and transmitted repeatedly,
Means for extracting the correspondence table and controlling the image data extraction control
The unit refers to the correspondence table to identify the second image stream.
The image data is converted to a first image stream identifier.
Data extraction unit to set the extraction conditions, the image correspondence table,
The playback end time of the corresponding image data is described,
A clock unit for counting time;
And the extraction control means further comprises:
Has the playback end time of the described image data been reached?
An end time determination unit for determining whether or not the end time determination unit;
Has determined that the playback end time of the image data has been reached.
Requesting the image data extraction unit to stop extracting image data.
And an extraction stop instruction section for indicating
Private section defined in PEG2 standard
The extraction condition setting unit
Table_id_extension as table identifier
Is to be set.

The image data is associated with each image data.
Multiple links with control information
Receive digital broadcasts where the entire content is repeatedly transmitted
Digital broadcast receiving apparatus, wherein each of the control information
Is another resource linked to the corresponding image data.
Link destination information indicating the link destination image data,
The image data is provided with a first image stream identifier,
The control information is provided with a control information identifier.
An image data identifier that identifies the image data at the link destination and a link
The link destination is the control information identifier that identifies the control information of the link destination.
Information, and a plurality of image data
The control information corresponding to the multiplexed multiplexing
Transmitted as a stream, wherein the multiplexed stream includes:
A plurality of image data identifiers and a second image stream identifier;
Multiple module information describing the correspondence is multiplexed
Receiving means for receiving digital broadcasts,
One image data from digital broadcasting and the corresponding control information
And extracting means for extracting the information.
Once the module information extraction conditions are set, the module information
A module information extraction unit for extracting information
Storage means for storing control information, wherein the storage means,
Module information record that stores extracted module information
Reproducing means for reproducing the extracted image data, having a storage unit
And the link destination information included in the control information
Operating means for receiving a user's selection operation,
An operation unit configured to output image data reproduced by the reproduction unit;
To switch to linked image data from
It has a specification accepting unit to attach and link with user operation
Control information corresponding to the image data specified by the destination information
The extraction means is controlled to extract
Read the linked information of the stored control information, and
Link destination image data switched and specified by the specification reception unit
Based on the image data identifier and the control information identifier of the control information.
Extraction control means for setting extraction conditions in the extraction means
Wherein the extraction control means includes a module information storage unit.
The link destination is included in the module information stored in the storage unit.
Image data of the linked image data read from the information
Whether an image data identifier that matches the identifier is described
An image data identifier determining unit for determining whether or not the image data
The image data identifier that matches the data identifier
The corresponding second image stream
The second image is read out from the module information
The extraction of the image data is performed by the extracting means using the stream identifier.
An image data extraction control unit for setting output conditions;
The image data identifier that matches the data identifier
When it is determined that the module information is not
Module information instructing extraction of new module information
A re-extraction instruction unit, wherein the module information extraction unit comprises:
When receiving an instruction from the module information re-extraction instruction unit,
New module information is extracted and the module information storage unit
Update the module information stored in the
The data identifier determination unit responds to the updated module information
Since a configuration of performing the determination Te, it is possible to extract the image data by referring to the module information.

Also, a digital broadcasting system for realizing a pseudo dialogue using digital broadcasting includes the following digital broadcasting device and digital receiving device, wherein the digital broadcasting device performs a pseudo dialogue using digital broadcasting. And a multiplex transmitting means for repeatedly transmitting the plurality of image data as a multiplexed stream, wherein the image information storing means stores a plurality of image data each having an image data identifier. with the door, the multiplexed transmission means includes a reading section for reading the image data stored in the image information storing unit sequentially, image de with one or more
Different first image stream identifiers less than the total number of data
And one of them is sequentially added to the read image data.
An image stream identifier assigning unit to be assigned next,
Value equivalent to the image data identifier corresponding to each
Identification of a first image stream assigned to image data
Image support including a second image stream identifier equivalent to the child
An image correspondence table generation unit for generating a table, and a first image stream
The plurality of image data assigned an identifier,
A plurality of image correspondence tables generated by the image correspondence table generation unit,
When each image correspondence table shows the corresponding image data
Appearing more than a while ago, and the image data
In the meantime, the same first image stream identifier is assigned.
Multiplexing sequentially so that different image data does not appear
And a multiplexing unit for repeatedly transmitting the digital signal.
Broadcast receiving apparatus, receiving means for receiving a digital broadcast,
Extraction of one image data from the received digital broadcast
Output means, storage means, and reproduction of the extracted image data.
Playback means, and operation means for receiving a user's selection operation
And setting extraction conditions in the extraction means based on a user operation.
Extraction control means, wherein the extraction means
Images with image correspondence table identifiers that match the specified extraction conditions
Image correspondence table extraction for extracting the image correspondence table from the multiplexed stream
An output unit, wherein the storage unit stores the extracted image correspondence table.
An image correspondence table storage unit for storing, wherein the operating means is
A specified image from the image data reproduced by the recording means.
A specification receiving unit that receives an operation to specify switching to data
And the extracting means further comprises:
It has an image data extraction unit for extracting matching image data.
And the extraction control means outputs the image data of the designated image data.
An image correspondence table identifier with a value equivalent to the
An extraction condition setting unit for setting Te, before Symbol image correspondence table storage unit
The second image source listed in the stored image correspondence table
The stream identifier is read, and the read second image stream is read.
Setting extraction conditions in the extraction means using a frame identifier
An image data extraction control unit, wherein the extraction means
Stop extracting image data after extracting image data
, So it is transmitted in one direction from the digital broadcasting device.
Using digital image receiving device
As if interactively receiving image data in both directions
And a digital broadcasting system such as

Further, the image data includes the first image stream.
Beam identifier is assigned, a plurality of the image data is transmitted as a multiplexed stream obtained by multiplexing, the multiplexing streams, the image data identifier and the equivalent in the corresponding image data as an image correspondence table identifier An image correspondence table in which the second image stream identifier of the corresponding image data is described is multiplexed, and this image correspondence table is also transmitted to the digital broadcast receiving apparatus that receives the digital broadcast repeatedly transmitted similarly to the image data. A computer-readable recording medium to which the present invention is applied, a receiving unit for receiving a digital broadcast, an extracting unit for extracting one image data from the received digital broadcast, a storage unit, and reproducing the extracted image data Reproducing means; operating means for receiving a user's selection operation; and extracting means for setting extraction conditions in the extracting means based on the user operation. And control means, wherein the extracting means comprises an image correspondence table extraction unit for extracting from the multiplexed stream image correspondence table image correspondence table identifier that matches the set extraction condition is attached, the storage means Has an image correspondence table storage unit for storing the extracted image correspondence table, wherein the operation means receives an operation of designating switching from image data being reproduced by the reproduction means to designated image data. Part, and the extracting means further comprises:
Image data extraction to extract image data that matches the extraction conditions
Has a detection section, the extraction control means includes an extraction condition setting unit for setting image correspondence table identifier of the image data identifier and the equivalent in image data designated as the extraction condition, the image correspondence table
No. described in the image correspondence table stored in the storage unit
The two-image stream identifier is read, and the read second image
Using the image stream identifier, the extraction condition
An image data extraction control unit to be set;
Is extracting image data and then extracting image data
A program for causing a computer to perform the function of each means for stopping is recorded . This recording medium is
For use in conventional digital broadcast receivers that have no function
Is transmitted from a digital broadcasting device in one direction.
The user can send any one of the transmitted data according to the link information.
Selectable from broadcast data to other data
And can use digital broadcasting interactively.
You.

[0252] Pseudo dialogue using digital broadcasting
Digital broadcasting method that realizes
This is a digital broadcasting method for realizing a pseudo dialogue,
Multiple image data with image data identifiers
Storing image information to be stored;
Multiplexing that repeatedly transmits data as a multiplexed stream
And the multiplexing step comprises:
The image data stored in the image information storage step is
Subsequent reading sub-step and reading of image data by one or more
Holds less than the total number of different first image stream identifiers
Then, one of them is sequentially assigned to the read image data.
Assigning image stream identifier sub-step
Value equivalent to the image data identifier corresponding to each data
Of the first image stream assigned to the image data to be
An image pair comprising a second image stream identifier equivalent to the identifier
An image correspondence table generation sub-step for generating a correspondence table;
The plurality of image data to which image stream identifiers are assigned.
Data generated in the image correspondence table generation sub-step.
Multiple image correspondence tables correspond to each image correspondence table
Appears more than a certain time before the image data
And the corresponding image data, the same first image stream
When different image data to which the
Multiplexing
And steps. Also, digital release
Digital Broadcasting Method for Realizing Pseudo Dialogue Using Transmission
Is a digital broadcasting system that implements pseudo-dialogue
Broadcast method, each with an image data identifier
Image information storage step for storing a plurality of
And a plurality of the image data as a multiplexed stream.
A multiplex transmission step of repeatedly transmitting.
The weight transmission step is stored in the image information storage step.
Reading sub-step for sequentially reading the stored image data
And the first images having different numbers of one or more and less than the total number of image data
Read image data holding image stream identifier
Stream identifier that sequentially assigns one of them to
Assignment sub-steps and corresponding image data
Value equivalent to the data identifier and assigned to the corresponding image data
A second image stream equivalent to the first image stream identifier
Image correspondence table for generating an image correspondence table including a stream identifier
A generating sub-step, often the first Ima stream identifier
The applied plurality of image data and the image corresponding surface
The multiple image correspondence tables generated in the
Each image correspondence table shows the corresponding image data for a certain period of time.
Appears before and between the image correspondence table and the corresponding image data
Are assigned the same first image stream identifier.
Multiplexed so that different image data does not appear,
Multiplexing sub-step of repeatedly transmitting,
One image stream identifier is MPEG2 (Moving Pictu
re Experts Group 2) Stream identification defined in the standard
Child (stream_id) and packet identifier (PID)
And the second image stream identifier
Is a stream identifier (s) defined in the MPEG2 standard.
stream_id) and DVB (Digital Video Broadcas)
ting) component tag (comp
onent_tag), and the multiplex
The encapsulation step includes a packet identifier and a component tag.
The image correspondence table is repeatedly transmitted by the MPE.
G2 (Moving Picture Experts Group2) standard
Multiplexed as a private section
The response table identifier is table_id_extension.
It is to be. In addition, simulation using digital broadcasting
A digital broadcasting method that achieves similar dialogue,
A plurality of image data with each image data identifier
Storing image information and storing a plurality of the image data
Multiplex transmission that repeatedly transmits as a multiplexed stream
And the multiplexing transmission step comprises:
The image data stored in the image information storage step is sequentially
Read sub-step to read and total image data
Holds less than the number of different first image stream identifiers
Then, one of them is sequentially assigned to the read image data.
Assigning image stream identifier sub-step
A value equivalent to the image data identifier corresponding to each data
A first image stream assigned to the corresponding image data
An image comprising a second image stream identifier equivalent to the identifier
An image correspondence table generation sub-step for generating a correspondence table;
The plurality of images to which an image stream identifier has been assigned
Data and generated in the image correspondence table generation sub-step.
The multiple image correspondence tables correspond to the respective image correspondence tables.
Appears more than a certain time before the corresponding image data
Between the table and the corresponding image data, the same first image
Appearance different image data that has been assigned a stream identifier
Multiplexing server that multiplexes data sequentially so that
And the first image stream identifier.
Is the MPEG2 (Moving Picture Experts Group2) standard
A stream identifier (stream_i)
d) and the packet identifier (PID)
And the second image stream identifier is an MPEG2 standard
Stream identifier (stream_id) defined in
And DVB (Digital Video Broadcasting) standard
Component tag (component_ta)
g), wherein the multiplex transmission step
Shows the correspondence table between packet identifiers and component tags.
The image correspondence table is repeatedly transmitted, and MPEG2 (Movi
ng Picture Experts Group 2)
Multiplexed as a bait section and the image correspondence table identifier
Is table_id_extension,
The image correspondence table shows the image playback start time and image playback end time.
And the reproduction start time indicates the corresponding image data.
PTS defined by the MPEG2 standard for the first frame of the data
(Presentation Time Stamp)
The time is the MPEG of the last frame of the corresponding image data.
PTS (Presentation Time Stamp) specified in 2 standards
Value. Also, multiple image data
Digital broadcasting that receives digital broadcasts that are repeatedly transmitted
The transmission method is a digital transmission in which multiple image data are repeatedly transmitted.
Digital broadcast receiving method for receiving
The first image stream identifier is added to the image data.
And the plurality of image data are multiplexed and multiplexed.
And transmitted to the multiplexed stream,
A value equivalent to the image data identifier of the corresponding image data,
A first image stream assigned to the corresponding image data
A second image stream identifier equivalent to the identifier is described.
The image correspondence table is multiplexed.
Digital broadcasts are transmitted repeatedly like image data.
Receiving the digital broadcast and the received digital broadcast
An extraction step for extracting the first image data, and a storage step.
And a reproducing step for reproducing the extracted image data
And an operation step for receiving a user's selection operation.
Extraction conditions in the extraction step based on a user operation
And an extraction control step of setting the extraction step.
Is an image correspondence table identifier that matches the set extraction conditions.
Extract the image correspondence table marked with from the multiplexed stream
An image correspondence table extraction sub-step, wherein the storage step
Is an image correspondence table storage server that stores the extracted image correspondence table.
Step, wherein the operation step is the reproduction step.
From the image data being played back on the
Reception sub-step that receives the operation to switch to
The extracting step further includes a set extraction.
Image data extraction that extracts image data that matches the output conditions
A sub-step, wherein the extraction control step includes
Image correspondence table of the value equivalent to the image data identifier of the image data
An extraction condition setting sub-step for setting an identifier as an extraction condition
In the image correspondence table storage sub-step.
The second image stream listed in the image correspondence table
The second image stream that has been read out.
The extraction condition in the extraction step is set using the identifier.
Image data extraction control sub-step to determine
In the extracting step, the image data is extracted after extracting one image data.
It is decided to stop the extraction of data. Also, multiple images
Data to receive digital broadcasts where data is repeatedly transmitted
A digital broadcast receiving method, wherein the image data includes
One image stream identifier is assigned, and a plurality of image data
Are transmitted as a multiplexed multiplexed stream,
The multiplexed stream includes an image of the corresponding image data.
A value equivalent to the data identifier is added as the image correspondence table identifier.
And the second image stream identifier of the corresponding image data is
The described image correspondence table is multiplexed, and this image pair
The response table is transmitted repeatedly as well as the image data.
Receiving the digital broadcast and the received digital
An extracting step of extracting one image data from the broadcast;
And a playback step for playing back the extracted image data.
Steps and operation steps for accepting user selection operations
And extracting in the extracting step based on a user operation.
And setting an output condition.
Steps correspond to the image correspondence table that matches the set extraction conditions.
The image correspondence table with the identifier is extracted from the multiplexed stream.
And outputting an image correspondence table extraction sub-step.
Step is an image correspondence table that stores the extracted image correspondence table
A storage sub-step, wherein the operation step includes
Specified image from image data being played back in raw step
A specification reception service that receives an operation to specify switching to data
And the extracting step further comprises a setting step.
Image data to extract image data that matches the extraction conditions
Data extraction sub-step, wherein the extraction control step comprises:
Image with a value equivalent to the image data identifier of the specified image data
An extraction condition setting service that sets a correspondence table identifier as an extraction condition
Step and the image correspondence table storage substep.
Image described in the image correspondence table stored and stored
The stream identifier is read, and the read second image stream is read.
Extraction step in the extraction step using a stream identifier
Image data extraction control sub-step for setting
The extracting step is performed after extracting one image data.
Halting the extraction of image data and recognizing the first image stream;
The identifier is a stream identifier defined in the MPEG2 standard.
(Stream_id) and packet identifier (PID)
And the second image stream identifier is MPEG2
The stream identifier specified in the standard and the DVB standard
Component tag (component_ta)
g), and the multiplexed stream includes a component
Mapping table that describes the correspondence between the event tag and the packet identifier
Are multiplexed and transmitted repeatedly, and the extraction step
Extracts the correspondence table, and executes the image data extraction control
Next, referring to the correspondence table,
The first image stream identifier into a first image stream identifier.
Set the extraction conditions in the image data extraction sub-step
You are going to. Furthermore, multiple image data are repeated
Digital broadcasting method for receiving and transmitting digital broadcasting
Is a digital broadcast in which multiple image data are repeatedly transmitted.
A method for receiving a digital broadcast, comprising:
The data is provided with a first image stream identifier.
The image data of the multiplexed multiplexed stream and
And the multiplexed stream has a corresponding image.
A value equivalent to the image data identifier of the image data
The second image list of the corresponding image data
The image correspondence table that describes the
This image correspondence table is transmitted repeatedly like image data.
Receiving a digital broadcast,
Extraction of one image data from received digital broadcast
Step, storage step, and the extracted image data
Receiving a playback step to play and a user selection operation
Operating means, and the extracting means based on a user operation
Having an extraction control step of setting extraction conditions,
Extraction step, the image pairs that match the extracted condition that has been set
Whether the image correspondence table with the correspondence identifier is a multiplexed stream
Extracting the image correspondence table from the
The storage step is an image pair storing the extracted image correspondence table.
A response storage sub-step, wherein the operation step
From the image data being played back in the playback step
A specification reception that accepts an operation to specify switching to image data
The extracting step further comprises a setting step.
Image to extract image data that matches the specified extraction conditions
A data extraction sub-step, wherein the extraction control step
Is a value equivalent to the image data identifier of the specified image data.
Extraction condition setting that sets the image correspondence table identifier as the extraction condition
Setting sub-step and storing the image correspondence table.
Image described in the image correspondence table stored and stored
The stream identifier is read, and the read second image stream is read.
Extraction conditions are set in the extraction step using a stream identifier.
Image data extraction control sub-step to determine
In the extracting step, the image data is extracted after extracting one image data.
Data extraction is stopped and the corresponding image is displayed in the image correspondence table.
The start reproduction time of the data is described.
The step further includes a clock substep for counting time.
Wherein the reproducing step includes extracting the extracted image data.
After decoding, and decoding of one image data is completed.
When the completion of decoding is notified to the extraction control step,
The extraction control step is further described in the image correspondence table.
The playback step by the start playback time of the current image data.
Start time to determine whether or not there is a notification of decryption completion from the
The determination sub-step and the start time determination sub-step
When it is determined that there is no image data extraction sub-step
To instruct the image data extraction to stop,
An extraction instruction instructing the output sub-step to extract the image correspondence table
Sub-step, said first image stream identifier
Is a stream identifier (s) defined in the MPEG2 standard.
stream_id) and a packet identifier (PID).
And the second image stream identifier is an MPEG2 standard
Stream identifier specified in the DVB standard
Component tag (component_tag)
And the multiplexed stream includes a component
There are many correspondence tables that describe the correspondence between tags and packet identifiers.
Weighted and repeatedly transmitted, said extraction step
Extracts the correspondence table and sets the image data extraction control sub
The step refers to this correspondence table and refers to the second image stream.
Converts the beam identifier in the first image stream identifier, the
Set extraction conditions in image data extraction sub-step
The image correspondence table contains the end of reproduction of the corresponding image data.
An end time is described, and the reproducing step further includes:
A clock sub-step for counting time;
The extraction control step is further described in the image correspondence table.
To determine whether the playback end time of the current image data has been reached.
Determining the end time sub-step and determining the end time
In the sub-step, the playback end time of the image data
When it is determined, the image data extraction sub-step
Extraction stop instruction sub-step instructing to stop data extraction
The image correspondence table is defined in the MPEG2 standard.
Multiplexed as private sections
The extraction condition setting sub-step includes an image correspondence table identifier and
And set table_id_extension
I have to do that.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of content displayed as one frame on a display screen on a receiving side.

FIG. 2 is a diagram schematically illustrating transmission data transmitted from a transmission side.

FIG. 3 is a diagram schematically showing a state of transmission of transmission data transmitted from a transmission side.

FIG. 4 is a configuration diagram of Embodiment 1 of a data transmission device and a data reception device of the digital broadcasting system according to the present invention.

FIG. 5A is a diagram illustrating an example of image data stored in a presentation information storage unit according to the embodiment. FIG. 3B is a diagram illustrating an example of image data stored in the presentation information storage unit according to the embodiment.

FIG. 6 is a diagram illustrating an example of navigation information stored in a navigation information storage unit according to the embodiment.

FIG. 7 is a diagram illustrating an example of navigation information stored in a navigation information storage unit according to the embodiment.

FIG. 8 is a diagram illustrating an example of a structure information table and entry information stored in a structure information storage unit according to the embodiment.

FIG. 9 is a diagram illustrating an example of a multiplex information table stored in a multiplex information storage unit according to the embodiment.

FIG. 10 is a diagram showing an example of a content identifier assignment table created by the multiplex control unit according to the embodiment.

FIG. 11 is a diagram showing an example of a display image information identifier assignment table created by the multiplexing control unit of the embodiment.

FIG. 12 is a diagram illustrating an example in which the identifier information adding unit according to the above embodiment stores VE_id in a bit stream private area of image data.
It is a figure which shows the state which added.

FIG. 13 is a diagram illustrating an example of a navigation information table generated by the navigation information table generation unit according to the embodiment.

FIG. 14 is a diagram illustrating an example of a navigation information table generated by the navigation information table generation unit according to the embodiment.

FIG. 15A illustrates an example of a stream correspondence table generated by the stream correspondence information table generation unit according to the embodiment. FIG. 3B is a diagram illustrating an example of a stream correspondence table generated by the stream correspondence information table generation unit according to the embodiment. FIG. 4C is a diagram illustrating an example of a stream correspondence table generated by the stream correspondence information table generation unit according to the embodiment.

FIG. 16 is a schematic diagram of a transport stream multiplexed by the multiplexing unit according to the embodiment.

FIG. 17 is another schematic diagram of a transport stream multiplexed by the multiplexing unit of the embodiment.

FIG. 18A is a diagram illustrating an example of an NIT generated by a system information table generation unit according to the embodiment. FIG. 4B is a diagram illustrating an example of an SDT generated by the system information table generation unit according to the embodiment. FIG. 3C illustrates an example of an EIT generated by the system information table generation unit according to the embodiment.

FIG. 19 is a diagram illustrating an example of a PAT generated by the system information table generator of the embodiment.

FIG. 20 is a diagram illustrating an example of a PMT generated by the system information table generation unit according to the embodiment.

FIG. 21 (a) Entry_Desc in the PMT generated by the system information table generator according to the embodiment.
FIG. 4 is a diagram illustrating details of a descriptor. (B) NE_Component_De in PMT generated by the system information table generation unit of the above embodiment
It is a figure showing the details of a descriptor. (C) VE_Information in the PMT generated by the system information table generator of the above embodiment
FIG. 14 is a diagram illustrating details of Component_Descriptor. (D) stream_identifier in the PMT generated by the system information table generator of the above embodiment
It is a figure which shows the detail of rr_descriptor.

FIG. 22 is a schematic diagram of a transport stream multiplexed by the transmission unit according to the embodiment.

FIG. 23 is a flowchart illustrating an operation of the data transmission device according to the embodiment.

FIG. 24 is a flowchart illustrating an operation of the data transmission device of the embodiment.

FIG. 25 is a flowchart illustrating an operation of the data transmission device of the embodiment.

FIG. 26A is a diagram illustrating an example of a filter condition stored in a filter condition storage unit of the TS decoder unit according to the embodiment. FIG. 3B is a diagram illustrating an example of a filter condition stored in a filter condition storage unit of the TS decoder unit according to the embodiment.

FIG. 27A is a diagram illustrating an example of a display image displayed on the display unit according to the embodiment. (B) It is a figure showing an example of the display picture displayed on the display of the above-mentioned embodiment. FIG. 3C is a diagram illustrating an example of a display image displayed on the display unit according to the embodiment.

FIG. 28 is a flowchart illustrating an overall operation of the data receiving device according to the embodiment.

FIG. 29 is a flowchart illustrating details of S2410 of the above embodiment.

FIG. 30 is a flowchart illustrating details of S2504 in the above embodiment.

FIG. 31 is a flowchart illustrating details of S2506 of the above embodiment.

FIG. 32 is a flowchart illustrating details of S2416 in the above embodiment.

FIG. 33 is a configuration diagram of a data transmitting device and a data receiving device of a digital broadcasting system according to a second embodiment of the present invention.

FIG. 34A is a diagram illustrating an example of a module information table generated by a module information generation unit according to the embodiment. FIG. 3B is a diagram illustrating an example of a module information table generated by the module information generation unit according to the embodiment. FIG. 3C is a diagram illustrating an example of a module information table generated by a module information generation unit according to the embodiment.

FIG. 35 is a diagram schematically illustrating a transport stream generated by the multiplexing unit according to the embodiment.

FIG. 36 is a flowchart showing an operation of the data transmission device of the above embodiment.

FIG. 37 is a flowchart showing an operation of the data transmission device of the above embodiment.

FIG. 38 is a flowchart illustrating an operation of a switching process of image data in the data receiving device of the embodiment.

FIG. 39 is a diagram illustrating an example of audio data stored in the presentation information storage unit according to the third embodiment of the digital broadcasting system according to the present invention.

FIG. 40 is a diagram showing a structure information table and entry information stored in a structure information storage unit according to the embodiment.

FIG. 41 is a diagram showing a multiplex information table stored in a multiplex information storage unit of the embodiment.

FIG. 42 is a diagram showing a content identifier assignment table created by the multiplexing control unit of the above embodiment.

FIG. 43 is a diagram illustrating an example of a navigation information table generated by the navigation information table generation unit according to the embodiment.

FIG. 44 is a diagram schematically illustrating a transport stream multiplexed by the multiplexing unit according to the embodiment.

FIG. 45 (a) is a diagram illustrating an example of a PMT generated by the system information table generation unit of the embodiment. (B) It is a figure showing the details of the Entry_Descriptor.

FIG. 46 is a diagram schematically illustrating a transport stream transmitted by the transmission unit according to the embodiment.

FIG. 47 is a flowchart showing the operation of the above embodiment.

FIG. 48 is a flowchart showing an operation of voice switching according to the embodiment.

[Explanation of symbols]

 101,3351 Data transmission device 102 Transmission data storage unit 103,3352 Data multiplexing unit 104 Multiplex information storage unit 105 System information table generation unit 106 Transmission unit 107 Presentation information storage unit 108 Navigation information storage unit 109 Structural information storage unit 110,3354 Multiplexing control unit 111 Stream correspondence information table generating unit 112 Identifier information adding unit 113 Navigation information table generating unit 114 Multiplexing unit 121, 3361 Data receiving unit 122 Receiving unit 123 TS decoder unit 124 AV decoder unit 125, 3363 Received data storage unit 126 , 3362 Reception control unit 127 Signal reception unit 128 Reproduction unit 129 Display unit 130 Audio output unit 131 Filter condition storage unit 132 Stream correspondence information table storage unit 133 Navigation information table storage unit 134 System information table storage unit 3353 Module information generation unit 3364 Module information storage unit

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI H04N 7/035 7/081 7/24 (72) Inventor Kazuo Okamura 1006 Kadoma, Oji, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Shinji Inoue 1006 Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Masahiro Oro 1006 Odaka, Kazuma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Inventor Takashi Kakiuchi 1006 Kadoma, Kazuma, Kazuma, Osaka Prefecture, Japan Matsushita Electric Industrial Co., Ltd. 1006 Oaza Kadoma Matsushita Electric Industrial Co., Ltd. (72) Inventor Masayuki Kozuka 1006 Oaza Kadoma Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor III Yoshisuke Kadoma, Osaka Prefecture 1006 Kadoma, Matsushita Electric Industrial Co., Ltd. (72) Inventor Yoshinori Matsui 1006 Odoma Kadoma, Kadoma City, Osaka Pref. 1006 Oaza Kadoma Matsushita Electric Industrial Co., Ltd. (56) References JP-A-7-302243 (JP, A) Tadashi Isobe, "Multimedia Services in Broadcasting," Proc. Of the 1994 IEICE Autumn Conference. , Japan, SB-9-8, p. 633-634 Hiroshi Aneo, Kenjiro Kai, Tadashi Isobe, "Basic Functions of Multimedia Information Broadcasting Service", Image Information Engineering and Broadcasting Technology, Japan, March 20, 1995, Vol. 49, No. 3, p. 336-343, 002, CCNT 199800044008 Kenjiro Kai, Hiroshi Aneo, Tadashi Isobe, "Navigation in Multimedia Information Broadcasting Services", Information Processing Society of Japan Research Report, Japan, September 14, 1995, Vol. 95, No. 90, p. 9-16, 002, CS NT200000491002 "Personal computer integrates with TV centering on the Internet", Nikkei Personal Computer, Japan, March 25, 1996, March 25, 1996, pp. 218-223 (58) Field (Int.Cl. ⁷ , DB name) H04N ^7/ 00-7/088 G06F 13/00

Claims (46)

(57) [Claims] 1. A digital broadcasting device for realizing a simulated conversation using digital broadcasting, comprising: image information storage means for storing a plurality of image data each having an image data identifier; Multiplex transmission means for repeatedly transmitting the image data as a multiplexed stream, the multiplex transmission means sequentially transmitting the image data stored in the image information storage means.
And next reading the reading unit, the number of different first image scan of less than the total number of image data in one or more
Holds the stream identifier and adds it to the read image data.
Image stream identifier assignment to sequentially assign one of
And a value equivalent to the image data identifier corresponding to each image data
And the first image stream assigned to the corresponding image data.
An image correspondence table generation unit for generating an image correspondence table including a stream identifier equivalent to the second image stream identifier, the plurality of the first image stream identifier is assigned
And image data, a plurality generated by the image correspondence table generation unit
The image correspondence table and the image correspondence table correspond to each other.
Appears more than a certain time before the image data and matches the image correspondence table.
Between the corresponding image data, the same first image stream
No different image data assigned with an identifier appears
And a multiplexing unit for multiplexing and transmitting repeatedly.
A digital broadcasting device. 2. An image stream identifier allocating unit, comprising :
Holding and reading out different numbers of first image stream identifiers
One of the image data is sequentially assigned to the selected image data, and the multiplexing unit stores the respective image correspondence tables and corresponding image data.
A first image stream different at a fixed time between image data
Image data to which an identifier is assigned and a different second image
As many as the image correspondence table containing the stream identifier appears.
2. The digital broadcast according to claim 1, wherein the broadcast is multiplexed.
apparatus. 3. The image multiplexing unit according to claim 1, wherein
If, muxable a predetermined time between the corresponding image data
To which different first image stream identifiers are assigned.
When there is no image data, multiplex empty data.
3. The digital broadcasting device according to claim 2, wherein: 4. The digital broadcast device according to claim 1, wherein the set of image data and control information of the link destination of the image data are indicated, and a set of an image data identifier of the link destination image data and a control information identifier of the control information are set. Include link destination information
A control information storage means for storing control information of the non-multiple, further comprising a correspondence information storage means for storing correspondence information that associates with the control information and the image data, the multiplexing transmission means The control information is repeatedly transmitted as a multiplexed stream together with the image data, the reading unit reads out the control information associated with the image data with the corresponding information, and the multiplexing unit is read out by the reading unit. sequentially multiplexing the image data and control information, the digital broadcast apparatus and writes assigned control information identification <br/> another child in the control information. 5. The multiplexing unit, when multiplexing the image data and control information, sets a bit rate corresponding to a ratio between a data amount of each image data and an information amount of the corresponding control information to each image data. 5. The digital broadcasting apparatus according to claim 4, further comprising a band allocating unit that allocates each of the corresponding control information, wherein the multiplexing unit multiplexes the image data and the control information at the respectively assigned bit rates. 6. The multiplexing unit further includes a multiplexing start position calculating unit that calculates a multiplexing start position for multiplexing the image correspondence table, the image data and the control information according to a predetermined calculation formula, before Kio duplex unit multiplexes image correspondence table from the multiplexed start position of the image correspondence table calculated in the multi-start position calculation unit, before <br/> Symbol image data calculated by the multiplexing start position calculation unit 6. The digital broadcast apparatus according to claim 5, wherein image data and control information are multiplexed from a multiplex start position of the control information and the control data. 7. The digital broadcast device according to claim 1, wherein the first image stream identifier and the second image stream identifier are the same. 8. The method according to claim 1, wherein the first image stream identifier and the second
The two-image stream identifier is MPEG2 (Moving Pictu
re Experts Group2) Packet identifier defined in the standard
(PID).
Broadcasting equipment. 9. The method according to claim 1, wherein the first image stream identifier and the second image stream identifier are MPEG2 (Moving Pictur).
8. The digital broadcast apparatus according to claim 7 , wherein the digital broadcast apparatus is a combination of a stream identifier (stream_id) and a packet identifier (PID) defined in the e Experts Group 2) standard. 10. The first image stream identifier is MP
A packet identifier (PID) defined in the EG2 standard
And The second image stream identifier is DVB (Digital Video).
 Broadcasting) Component tags defined in the standard
(Component_tag), The multiplex transmission means includes a packet identifier and a component.
Repeatedly send the correspondence table that describes the correspondence with the tag
The digital broadcasting device according to claim 1, wherein: 11. The first image stream identifier is M
It is a combination of a stream identifier (stream_id) and a packet identifier (PID) defined in PEG2 (Moving Picture Experts Group2) standard, and the second image stream identifier is a combination of a stream identifier (stream_id) defined in MPEG2 standard and DVB.
(Digital Video Broadcasting) in combination with a component tag (component_tag) defined in the standard, wherein the multiplex transmission means repeatedly transmits a correspondence table in which correspondence between packet identifiers and component tags is described. The digital broadcasting device according to claim 1. 12. The image correspondence table includes an MPEG2 (Movi)
ng Picture Experts Group 2)
Multiplexed as a bait section, The image correspondence table identifier is table_id_exte
2. The digital signal according to claim 1, wherein
Broadcasting equipment. 13. The image correspondence table generation unit, The reproduction start time of the image data corresponding to the image correspondence table is
A playback start time calculation unit for calculating, Writing unit for writing the calculated playback start time to the image correspondence table
2. The digital broadcasting system according to claim 1, wherein
Feeder. 14. The reproduction start time is set to a corresponding image data
MPEG2 (Moving Picture Exp) of the first frame of the data
erts Group2) PTS (Presentation T
14. The value of (ime Stamp).
Digital broadcasting equipment. 15. The image correspondence table generation unit, The reproduction end time of the image data corresponding to the image correspondence table
A playback end time calculator for calculating, Writing unit for writing the calculated reproduction end time in the image correspondence table
2. The digital broadcasting system according to claim 1, wherein
Feeder. 16. The reproduction end time is set to a corresponding image data.
MPEG2 (Moving Picture Exp) of the last frame of the data
erts Group2) PTS (Presentation T
ime Stamp) value.
Digital broadcasting equipment. 17. The image processing apparatus according to claim 1, further comprising an image data identifier adding unit that adds an image data identifier to a private area of the image data when multiplexing the image data read by the reading unit. The digital broadcasting device according to claim 1, wherein: 18. Before Kio duplexing unit, between the image data corresponding to the image correspondence table after multiplexing an image correspondence table until you multi <br/> duplexing, further identical 2. The digital broadcast apparatus according to claim 1, wherein the image correspondence table is read and multiplexed a plurality of times. 19. An audio data identifier is assigned to each of them.
Updating audio information storage means that stores multiple audio data
And the multiplexing transmission means multiplexes the plurality of audio data.
The multiplex transmission means further sequentially transmits the audio data stored in the audio information storage means.
A reading unit that out next read, the number of different first speech scan of less than the total number of audio data in one or more
Holds the stream identifier and adds it to the read audio data.
Audio stream identifier assignment to sequentially assign one of
And a value equivalent to the audio data identifier corresponding to each audio data
And the first audio stream assigned to the corresponding audio data.
Including the second audio stream identifier equivalent to the stream identifier.
A voice correspondence table generating unit for generating a voice correspondence table ;
Voice data and a plurality of voice data generated by the voice correspondence table generation unit.
And the corresponding audio correspondence table
Appears more than a certain time before the audio data, and
Between the corresponding audio data, the same first audio stream
No different audio data with assigned identifier appears
And a multiplexing unit for multiplexing and transmitting repeatedly.
2. The digital broadcasting device according to claim 1, wherein
Place. 20. A pseudo-dialogue using digital broadcasting
Digital broadcasting device to be realized, A plurality of image data each having an image data identifier
Image information storage means for storing Repeating a plurality of the image data as a multiplexed stream
And multiplex transmission means for transmitting The multiplex transmission means, The image data stored in the image information storage means
A reading unit for reading next, 1 or more different first image scans whose number is less than the total number of image data.
Holds the stream identifier and adds it to the read image data.
Image stream identifier assignment to sequentially assign one of
Department and A value equivalent to the image data identifier corresponding to each image data
Used as its own identifier and assigned to the corresponding image data
Second image stream equivalent to the assigned first image stream identifier.
An image correspondence table that generates an image correspondence table including a trim identifier
A generating unit; The plurality of image streams to which a first image stream identifier is assigned;
Image data and the image Multiple generated by the image correspondence table generator
The image correspondence table and the image correspondence table correspond to each other.
Appears more than a certain time before the image data and matches the image correspondence table.
Between the corresponding image data, the same first image stream
No different image data assigned with an identifier appears
And a multiplexing unit for multiplexing and transmitting repeatedly.
And The first image stream identifier is MPEG2 (Moving
 Picture Experts Group 2) A stream defined by the standard
System identifier (stream_id) and packet identifier (P
ID) and the second image stream
The identifier is the stream identification defined in the MPEG2 standard.
Child (stream_id) and DVB (Digital Video Br)
oadcasting) component tag (c
component_tag). The multiplex transmission means includes a packet identifier and a component.
Repeatedly send the correspondence table with the tag, The image correspondence table is based on MPEG2 (Moving Picture Exper
ts Group2) Private section defined in the standard
Multiplexed as The image correspondence table identifier is table_id_exte
a digital broadcasting device, wherein 21. A pseudo-dialogue using digital broadcasting
Digital broadcasting device to be realized, A plurality of image data each having an image data identifier
Image information storage means for storing Repeating a plurality of the image data as a multiplexed stream
And multiplex transmission means for transmitting The multiplex transmission means, The image data stored in the image information storage means
A reading unit for reading next, 1 or more different first image scans whose number is less than the total number of image data.
Holds the stream identifier and adds it to the read image data.
Image stream identifier assignment to sequentially assign one of
Department and Value equivalent to image data identifier corresponding to each image data
And the first image stream assigned to the corresponding image data.
Second image stream identifier equivalent to the stream identifier Including
An image correspondence table generator for generating an image correspondence table; The plurality of image streams to which a first image stream identifier is assigned;
Image data and a plurality of images generated by the image correspondence table generation unit
The image correspondence table and the image correspondence table correspond to each other.
Appears more than a certain time before the image data and matches the image correspondence table.
Between the corresponding image data, the same first image stream
No different image data assigned with an identifier appears
And a multiplexing unit for multiplexing and transmitting repeatedly.
And The first image stream identifier is MPEG2 (Moving
 Picture Experts Group 2) A stream defined by the standard
System identifier (stream_id) and packet identifier (P
ID) and the second image stream
The identifier is the stream identification defined in the MPEG2 standard.
Child (stream_id) and DVB (Digital Video Br)
oadcasting) component tag (c
component_tag). The multiplex transmission means includes a packet identifier and a component.
Repeatedly send the correspondence table with the tag, The image correspondence table is based on MPEG2 (Moving Picture Exper
ts Group2) Private section defined in the standard
Multiplexed as The image correspondence table identifier is table_id_exte
ntion, The image correspondence table includes the image reproduction start time and the image reproduction end time.
Is written and The reproduction start time is determined by the start frame of the corresponding image data.
PTS (Presentation
Time Stamp) The reproduction end time is determined by the last frame of the corresponding image data.
PTS (Presentation
Digital broadcast characterized by being the value of (Time Stamp)
apparatus. 22. A digital broadcasting apparatus for realizing a simulated conversation using digital broadcasting, comprising: image information storage means for storing a plurality of image data each having an image data identifier; A plurality of controls to which a control information identifier including link destination information indicated by a set of an image data identifier of the link destination image data and a control information identifier of the control information is indicated. Control information storage means for storing information; correspondence information storage means for storing correspondence information for associating the image data with the control information; and repeating the plurality of image data together with the control information as a multiplexed stream. Multiplex transmission means for transmitting, the multiplex transmission means, the control information associated with the image data and the correspondence information A reading unit for sequentially reading, the number of different first string is less than the total number of image data in one or more
It holds over beam identifiers assigned sequentially one of them in images data read by the reading unit, an identifier assignment unit to assign the control information identifier in the control information, an image corresponding to each image data A value equivalent to the data identifier and the first image stream assigned to the corresponding image data.
And a stream identifier equivalent to the second image stream identifier, an image correspondence table generation unit which reproduction time information to generate an image correspondence table written in the corresponding image data, said first image stream identifier is assigned plural
Image data and multiple pieces to which control information identification information is assigned
And control information for a plurality generated by the image correspondence table generation unit
The image correspondence table and the image correspondence table correspond to each other.
Appears more than a certain time before the image data and control information ,
The same first image exists between the correspondence table and the corresponding image data.
Different image data assigned a stream identifier
Multiplexing, multiplexing sequentially so that they do not appear, and repeatedly transmitting
A digital broadcasting device comprising: a converting unit. 23. A reproduction time calculation unit that calculates time information for reproducing image data corresponding to the image correspondence table in accordance with a predetermined calculation formula, wherein the reproduction time calculation unit calculates 23. The digital broadcasting device according to claim 22 , further comprising a reproduction time writing unit that writes the reproduction time information into the image correspondence table. 24. A digital broadcasting device for realizing a pseudo-interaction using digital broadcasting, comprising: image information storage means for storing a plurality of image data each having an image data identifier; A plurality of controls to which a control information identifier including link destination information indicated by a set of an image data identifier of the link destination image data and a control information identifier of the control information is indicated. Control information storage means for storing information; correspondence information storage means for storing correspondence information for associating the image data with the control information; and repeating the plurality of image data together with the control information as a multiplexed stream. Multiplex transmission means for transmitting, the multiplex transmission means, the control information associated with the image data and the correspondence information A reading unit for sequentially reading, the number of different first image scan of less than the total number of image data in one or more
Holds the stream identifier and adds it to the read image data.
Is sequentially assigned, and control information is identified as control information.
An identifier assignment unit that assigns a child, said plurality of image data to identify each assigned
The first image stream identifier equivalent to the second image stream was
A module information generating unit that generates module information including a system identifier for each of a plurality of image data ;
Image data and the image data generated by the module information generation unit
Module information and the corresponding module information
Appears a certain time or more before the image data of
Information and a plurality of image data corresponding to the plurality of image data.
The same first image stream identifier as each image data
Order so that different assigned image data does not appear.
Having a multiplexing unit for multiplexing and repeating transmission
A digital broadcasting device characterized by the above-mentioned. 25. A digital broadcast receiving apparatus for receiving a digital broadcast in which a plurality of image data are repeatedly transmitted, wherein the image data is provided with a first image stream identifier , and the plurality of image data are multiplexed. is sent as reduction has been multiplexed stream, wherein the multiplexed stream is subjected to image data identifier and the equivalent in the corresponding image data as an image correspondence table identifier, the second corresponding image data
An image correspondence table in which an image stream identifier is described is multiplexed, and this image correspondence table is repeatedly transmitted similarly to the image data. A receiving means for receiving a digital broadcast, and one image data from the received digital broadcast Extraction means for extracting the image data, storage means, reproduction means for reproducing the extracted image data, operation means for receiving a user's selection operation, and extraction control means for setting extraction conditions in the extraction means based on the user operation with the door, the extraction means has an image correspondence table extraction unit for extracting from the multiplexed stream image correspondence table image correspondence table identifier that matches the set extraction condition is attached, the storage unit, An image correspondence table storage unit for storing the extracted image correspondence table, wherein the operation unit is configured to specify designated image data from image data reproduced by the reproduction unit. Has a designation accepting unit for accepting a switching designation of the operation, the extraction means further image to extract image data that match the set extraction condition
Has an image data extraction unit, the extraction control unit, extraction condition setting unit for setting image correspondence table identifier of the image data identifier and the equivalent in image data designated as the extraction conditions
If, serial to the image correspondence table stored in the image correspondence table storage unit
The second image stream identifier is read out and read.
Using the extracted second image stream identifier,
Have the image data extraction control unit setting the extraction condition in the stage
And extracting means for extracting the image data after extracting the one image data.
A digital broadcast receiving apparatus for stopping extraction of data. 26. The image data, wherein the same first image
The stream identifier is repeatedly added to different image data, and the reproducing means is an identifier for extracting an image data identifier included in the image data extracted by the image data extraction unit and recorded in a private area of the image data. An extraction unit, wherein the extraction control unit further includes: an image data determination unit configured to determine whether the image data identifier extracted by the identifier extraction unit matches a specified image data identifier; A reproduction stop instruction unit for giving a reproduction stop instruction to the reproduction unit when it is determined that the units do not match; and an image correspondence table for the image correspondence table extraction unit when the reproduction stop instruction unit gives a reproduction stop instruction. 3. An image correspondence table extraction instructing unit for instructing extraction of the image.
6. The digital broadcast receiving device according to 5 . 27. The extraction control means, further comprising: when the image data determination unit determines that they match, instructs the image data extraction unit to stop extracting image data, and stops the extraction of image data. The digital broadcast receiving device according to claim 26, further comprising a unit. 28. The image correspondence table describes a start reproduction time of the corresponding image data. The reproduction means further includes a clock unit for counting time, and the reproduction means When the image data is decoded and reproduced, and when the decoding of one image data is completed, the completion of the decoding is notified to the extraction control means. The extraction control means further includes an image data described in the image correspondence table. A start time determination unit that determines whether or not there is a notification of completion of decoding from the playback unit by the start playback time of the image data extraction unit. 26. The digital broadcast receiving apparatus according to claim 25 , further comprising: an extraction instruction unit that instructs the image correspondence table extraction unit to instruct the image correspondence table extraction unit to extract the image correspondence table. 29. The first image stream identifier is M
A packet identifier PID defined in the PEG2 standard.
The second image stream identifier is defined in the DVB standard.
Component tag (component_t
ag), wherein the multiplexed stream includes a component
Mapping table that describes the correspondence between the event tag and the packet identifier
Are multiplexed and transmitted repeatedly, The extracting means extracts the correspondence table, The image data extraction control unit refers to the correspondence table,
Replace the second image stream identifier with the first image stream identifier
And set extraction conditions in the image data extraction unit.
26. The digital broadcast reception according to claim 25, wherein
apparatus. 30. The first image stream identifier is M
Et al defined PEG2 standard stream identifier (STRE
am_id) and a packet identifier (PID), and the second image stream identifier is defined in the MPEG2 standard.
And a and et stream identifier and DVB standards prescribed et component tag (component_tag), wherein the multiplexed stream, a correspondence table corresponding has been described with a component tag and the packet identifiers are repeatedly transmitted multiplexed The extraction means extracts the correspondence table, and the image data extraction control unit refers to the correspondence table,
26. The digital broadcast receiving apparatus according to claim 25 , wherein the second image stream identifier is converted into a first image stream identifier , and an extraction condition is set in the image data extraction unit. 31. is identical with the first image stream identifier and the second image stream identifier, the image data extraction control unit reads the second image strike
26. The digital broadcast receiving apparatus according to claim 25 , wherein a stream identifier is set as an extraction condition in said extraction means. 32. The image correspondence table describes a reproduction end time of corresponding image data. The reproduction means further has a clock section for counting time, and the extraction control means further comprises: An end time determination unit that determines whether or not the reproduction end time of the image data described in the image correspondence table has been reached; and the end time determination unit has reached the reproduction end time of the image data. 26. The digital broadcast receiving apparatus according to claim 25 , further comprising: an extraction stop instructing unit that instructs the image data extracting unit to stop extracting image data when the determination is made. 33. The image correspondence table complies with the MPEG2 standard.
Multiplexed as a prescribed private section
Yes, The extraction condition setting unit sets tab as an image correspondence table identifier.
It is characterized by setting le_id_extension
The digital broadcast receiving apparatus according to claim 25, wherein 34. A digital broadcast receiving apparatus for receiving a digital broadcast in which a plurality of linked contents composed of image data and control information associated with each image data are repeatedly transmitted as a whole, The control information includes link destination information indicating image data of another link destination linked to the corresponding image data, and the image data includes a first image stream.
Identifier is assigned, to the control information, the control information identifier has been assigned, as the control information identifier and a destination information for identifying the image data identifier and the destination of the control information that identifies the image data of the link destination Are described, the plurality of image data and the control information corresponding thereto are transmitted as a multiplexed multiplexed stream, and the multiplexed stream is equivalent to an image data identifier of the corresponding image data. assigned the value as an image correspondence table identifier, an image correspondence table and an end reproduction time of the image data has been described which corresponds to the second image stream identifier of the corresponding image data are multiplexed, even the image correspondence table A receiving means for receiving a digital broadcast, which is repeatedly transmitted similarly to the image data, and one image data from the received digital broadcast and a control corresponding thereto. And extraction means for extracting a broadcast, the extraction means includes an image correspondence table extraction unit for extracting from the multiplexed stream image correspondence table image correspondence table identifier is attached to match the set extraction condition, An image data extraction unit for extracting image data that matches the set extraction condition from the multiplexed stream; and a storage unit for storing the extracted control information. An image correspondence table storage unit for storing a table; a reproducing unit for reproducing the extracted image data; the reproducing unit having a clock unit for counting time; and link destination information included in the control information. Operating means for receiving a user's selection operation for the image processing apparatus, wherein the operating means includes an operation for designating switching from image data being reproduced by the reproducing means to image data of a link destination. A control unit configured to control an extracting unit to extract image data specified by the link destination information and corresponding control information in accordance with a user operation, and control information stored in the storage unit. Extraction control means for reading the link destination information, and setting extraction conditions in the extraction means based on the image data identifier of the link destination image data and the control information identifier of the control information switched and designated by the designation receiving unit. , the extraction control means includes an extraction condition setting unit for setting image correspondence table <br/> identifier of the image data identifier and the equivalent in image data as the extraction condition, the image data described in the image correspondence table of the end time determination unit determines whether the host vehicle has reached the playback end <br/> time, after the extraction condition set by the extraction condition setting unit, of the image data in the end time determination unit Until it is determined to have reached the raw end time, that it has an extraction state control unit for controlling so as to extract the image data matching the image data extraction unit to set extraction condition from the multiplexed stream Digital broadcast receiver characterized by the above-mentioned. 35. The digital broadcast receiving apparatus according to claim 25.
The device further includes a device in which a plurality of audio data are repeatedly transmitted.
Digital broadcast, The audio data is provided with a first audio stream identifier.
And the plurality of audio data are multiplexed and multiplexed.
And transmitted to the multiplexed stream,
A value equivalent to the audio data identifier of the corresponding audio data
Attached as a correspondence table identifier, the second of the corresponding audio data
Multiplexed audio correspondence table with audio stream identifier
This audio correspondence table is repeated in the same way as audio data.
Has been sent, The extracting means further comprises:
Extract audio data, The reproducing means reproduces the extracted audio data.
And The extraction means further comprises: A voice correspondence table identifier that matches the set extraction conditions is added.
Pairs for extracting the extracted audio correspondence table from the multiplexed stream
It has a response extraction unit, The storage means further comprises: There is a voice correspondence table storage unit that stores the extracted voice correspondence table.
And The operating means further comprises: A specified sound from the audio data reproduced by the reproduction means.
Specification reception to accept the operation to switch to voice data
Part The extraction means further comprises: Sound for extracting audio data that matches the set extraction conditions
It has a voice data extraction unit, The extraction control means further comprises: Audio with a value equivalent to the audio data identifier of the specified audio data
Extraction condition setting unit that sets correspondence table identifiers as extraction conditions
When, Recorded in the voice correspondence table stored in the voice correspondence table storage unit.
Read the second audio stream identifier on the
Using the second audio stream identifier Note extraction
And a voice data extraction control unit that sets extraction conditions.
And The extracting means extracts the audio data after extracting one audio data.
Digital broadcast reception characterized by stopping data extraction
apparatus. 36. A method in which a plurality of image data are repeatedly transmitted.
Digital broadcast receiver that receives digital broadcasts
hand, The image data is provided with a first image stream identifier.
And the plurality of image data are multiplexed and multiplexed.
And transmitted to the multiplexed stream,
A value equivalent to the image data identifier of the corresponding image data
It is attached as a correspondence table identifier, and the second of the corresponding image data
Multiplexed image correspondence table with image stream identifier
This image correspondence table is also repeated like image data.
And further transmitted with a second image stream identifier and
The correspondence table with the first image stream identifier has been transmitted.
And Receiving means for receiving a digital broadcast; Extraction of one image data from the received digital broadcast
Delivery means, Storage means; Playback means for playing back the extracted image data; Operating means for receiving a user's selection operation; Setting extraction conditions in the extraction means based on a user operation
Extraction control means, The extracting means, An image correspondence table identifier that matches the set extraction conditions is added.
Image pairs for extracting the extracted image correspondence table from the multiplexed stream
It has a response extraction unit, The storage means, An image correspondence table storage unit for storing the extracted image correspondence table is provided.
And The operating means includes: From the image data reproduced by the reproduction means,
Specification reception to accept operation to specify switching to image data
Part The extraction means further comprises: An image to extract image data that matches the set extraction conditions
With image data extraction unit , The extraction control means, Image with a value equivalent to the image data identifier of the specified image data
Extraction condition setting unit that sets correspondence table identifiers as extraction conditions
When, Recorded in the image correspondence table stored in the image correspondence table storage unit.
The second image stream identifier is read out and read.
Using the extracted second image stream identifier,
An image data extraction control unit that sets extraction conditions
And The extracting means extracts the image data after extracting one image data.
Stop extracting the data, The first image stream identifier is based on the MPEG2 standard.
The stream identifier (stream_id)
A packet identifier (PID).
The stream identifier is a stream defined by the MPEG2 standard.
Identifier and component tag specified in DVB standard
(Component_tag) and the multiplexing
The stream has a component tag and a packet identifier
The correspondence table that describes the correspondence is multiplexed and transmitted repeatedly
Has been The extracting means extracts the correspondence table, The image data extraction control unit includes a correspondence table and the correspondence table.
, The second image stream identifier is assigned to the first image stream.
The data is converted to a stream identifier and extracted by the image data extraction unit.
Digital broadcast receiving apparatus characterized by setting output conditions
Place. 37. A method in which a plurality of image data are repeatedly transmitted.
Digital broadcast receiver that receives digital broadcasts
hand, The image data is provided with a first image stream identifier.
And the plurality of image data are multiplexed and multiplexed.
And transmitted to the multiplexed stream,
A value equivalent to the image data identifier of the corresponding image data
It is attached as a correspondence table identifier, and the second of the corresponding image data
Multiplexed image correspondence table with image stream identifier
This image correspondence table is also repeated like image data.
Has been sent, Receiving means for receiving a digital broadcast; Extraction of one image data from the received digital broadcast
Delivery means, Storage means; Playback means for playing back the extracted image data; Operating means for receiving a user's selection operation; Setting extraction conditions in the extraction means based on a user operation
Extraction control means, The extracting means, An image correspondence table identifier that matches the set extraction conditions is added.
Image pairs for extracting the extracted image correspondence table from the multiplexed stream
It has a response extraction unit, The storage means, An image correspondence table storage unit for storing the extracted image correspondence table is provided.
And The operating means includes: From the image data reproduced by the reproduction means,
Specification reception to accept operation to specify switching to image data
Part The extraction means further comprises: An image to extract image data that matches the set extraction conditions
Having an image data extraction unit, The extraction control means, Image with a value equivalent to the image data identifier of the specified image data
Extraction condition setting unit that sets correspondence table identifiers as extraction conditions
When, Recorded in the image correspondence table stored in the image correspondence table storage unit.
The second image stream identifier is read out and read.
Using the extracted second image stream identifier,
An image data extraction control unit that sets extraction conditions
And The extracting means extracts the image data after extracting one image data.
Stop extracting the data, At the time of starting reproduction of the corresponding image data,
The time is described, The reproducing means further comprises: It has a clock section that counts the time, The reproducing means decodes the extracted image data and then
When the decoding of one image data is completed, the extraction
Notify the control means of the completion of decryption, The extraction control means further comprises: Start reproduction of image data described in the image correspondence table
Whether or not there is a notification of decoding completion from the reproducing means by the time
A start time determination unit for determining whether If it is determined that there is no start time determination unit, the image data
Instructs the data extraction unit to stop extracting image data.
An extraction instruction instructing the image correspondence table extraction unit to extract the image correspondence table
Part and The first image stream identifier is based on the MPEG2 standard.
The stream identifier (stream_id)
A packet identifier (PID).
The stream identifier is a stream defined by the MPEG2 standard.
Identifier and component tag specified in DVB standard
(Component_tag) and the multiplexing
The stream has a component tag and a packet identifier
The correspondence table that describes the correspondence is multiplexed and transmitted repeatedly
Has been The extracting means extracts the correspondence table, The image data extraction control unit refers to the correspondence table,
Replace the second image stream identifier with the first image stream identifier
And set extraction conditions in the image data extraction unit
And When the reproduction of the corresponding image data is completed,
Time is described, and the reproducing means further comprises: A clock section for counting time, The extraction control means further comprises: End of reproduction of image data described in the image correspondence table
An end time determination unit that determines whether a time has been reached; The end time determination unit reaches the reproduction end time of the image data.
When it is determined that the image data
An extraction stop instruction unit for instructing the extraction of the data to stop, The image correspondence table is based on the stipulated in the MPEG2 standard.
Multiplexed as a bait section, The extraction condition setting unit sets tab as an image correspondence table identifier.
It is characterized by setting le_id_extension
Digital broadcast receiving device. 38. Associating image data with each image data
Control information Links with multiple links
Receiving digital broadcasts in which the entire content is repeatedly transmitted
Digital broadcast receiving device, Each of the control information has a link with the corresponding image data.
Link information indicating image data of another linked link with
And the image data includes a first image stream.
An identifier is attached, and the control information includes a control information identifier.
Image data that identifies the linked image data.
Data identifier and control information
Besshi is described as link destination information, and multiple
The image data and the corresponding control information are multiplexed.
Transmitted as a multiplexed multiplexed stream,
The stream includes a plurality of image data identifiers and a second image stream.
Multiple module information describing the correspondence with the stream identifier
Information is multiplexed, Receiving means for receiving a digital broadcast; One image data from the received digital broadcast and corresponding
Extraction means for extracting control information to be performed, The extracting means, Once the module information extraction conditions are set, the module
A module information extracting unit for extracting information, Comprising storage means for storing the extracted control information, The storage means, Module information record that stores extracted module information
Have Playback means for playing back the extracted image data; User for link destination information included in the control information
Operation means for receiving the selection operation of the The operating means includes: A link destination from the image data reproduced by the reproduction means.
To accept the operation of switching to the image data
Has a reception unit, Image specified by link destination information according to user operation
Extraction means to extract data and corresponding control information
Controlling, and linking the control information stored in the storage means.
Read out the destination information, and
The image data identifier and control information of the linked image data
Based on the control information identifier of the Extraction means for delivery
Extraction control means for setting the matter, The extraction control means, Module stored in the module information storage unit
The link destination image read from the link destination information in the information
Image data identification that matches the image data identifier of the image data
Image data identifier determination to determine whether child is described
Fixed part, The image data identification unit that matches the image data
When it is determined that the child is described, the corresponding second image
Read the stream identifier from the module information
Using the second image stream identifier, the image
Image data extraction control unit that sets image data extraction conditions
When, The image data identification unit that matches the image data
When it is determined that no child is described, the module information
That instructs the report extractor to extract new module information
Module information re-extraction instructing unit, The module information extracting unit is configured to re-extract the module information.
When receiving an instruction from the exit instruction section, new module information is
Extracted and stored in the module information storage unit.
Update the rule information, The image data identifier determination unit includes an updated module
Digital, wherein the determination is performed on information
Broadcast receiver. 39. Pseudo dialogue using digital broadcasting
The digital broadcasting system to be realized is the following digital broadcasting
Device and a digital receiving device, The digital broadcasting device, Digital realizing pseudo-dialogue using digital broadcasting
A broadcast device, A plurality of image data each having an image data identifier
Image information storage means for storing Repeating a plurality of the image data as a multiplexed stream
And multiplex transmission means for transmitting The multiplex transmission means, The image data stored in the image information storage means
A reading unit for reading next, 1 or more different first image scans whose number is less than the total number of image data.
Holds the stream identifier and adds it to the read image data.
Stream information to sequentially assign one of Assignee
Department and Value equivalent to image data identifier corresponding to each image data
And the first image stream assigned to the corresponding image data.
And a second image stream identifier equivalent to the
An image correspondence table generator for generating an image correspondence table; The plurality of image streams to which a first image stream identifier is assigned;
Image data and a plurality of images generated by the image correspondence table generation unit
The image correspondence table and the image correspondence table correspond to each other.
Appears more than a certain time before the image data and matches the image correspondence table.
Between the corresponding image data, the same first image stream
No different image data assigned with an identifier appears
And a multiplexing unit for multiplexing and transmitting repeatedly.
And The digital broadcast receiving device, Receiving means for receiving a digital broadcast; Extraction of one image data from the received digital broadcast
Delivery means, Storage means; Playback means for playing back the extracted image data; Operating means for receiving a user's selection operation; Setting extraction conditions in the extraction means based on a user operation
Extraction control means, The extracting means, An image correspondence table identifier that matches the set extraction conditions is added.
Image pairs for extracting the extracted image correspondence table from the multiplexed stream
It has a response extraction unit, The storage means, An image correspondence table storage unit for storing the extracted image correspondence table is provided.
And The operating means includes: From the image data reproduced by the reproduction means,
Specification reception to accept operation to specify switching to image data
Part The extraction means further comprises: An image to extract image data that matches the set extraction conditions
Having an image data extraction unit, The extraction control means, Image with a value equivalent to the image data identifier of the specified image data
Extraction condition setting unit that sets correspondence table identifiers as extraction conditions
When, Recorded in the image correspondence table stored in the image correspondence table storage unit.
The second image stream identifier is read out and read.
Using the extracted second image stream identifier,
An image data extraction control unit that sets extraction conditions
And The extracting means extracts the image data after extracting one image data.
Digital broadcasting system characterized by stopping extraction of data
Tem. 40. The image data includes a first image stream.
Identifier is assigned with a plurality of the image data is transmitted as a multiplexed stream obtained by multiplexing, the multiplexing streams, the image data identifier and the equivalent in the corresponding image data as an image correspondence table identifier The image correspondence table in which the second image stream identifier of the corresponding image data is described is multiplexed, and this image correspondence table is also applied to a digital broadcast receiving apparatus that receives a digital broadcast repeatedly transmitted like image data. Receiving means for receiving a digital broadcast, extracting means for extracting one image data from the received digital broadcast, storage means, and reproducing for reproducing the extracted image data. Means, operation means for receiving a user's selection operation, and setting extraction conditions in the extraction means based on the user operation And a output control means, said extracting means comprises an image correspondence table extraction unit for extracting from the multiplexed stream image correspondence table image correspondence table identifier that matches the set extraction condition is attached, the storage The means has an image correspondence table storage unit for storing the extracted image correspondence table, and the operation means includes a designation for accepting an operation of designating switching from image data reproduced by the reproduction means to designated image data. A receiving unit, wherein the extracting unit further includes an image extracting unit that extracts image data that matches the set extraction condition.
Has an image data extraction unit, the extraction control unit, extraction condition setting unit for setting image correspondence table identifier of the image data identifier and the equivalent in image data designated as the extraction conditions
If, serial to the image correspondence table stored in the image correspondence table storage unit
The second image stream identifier is read out and read.
Using the extracted second image stream identifier,
An image data extraction control unit that sets extraction conditions
And extracting means for extracting the image data after extracting the one image data.
A computer-readable recording medium in which a program for causing a computer to perform the function of each means for stopping data extraction is recorded. 41. Pseudo dialogue using digital broadcasting
Digital broadcasting method to be realized, A plurality of image data each having an image data identifier
Image information storing step of storing Repeating a plurality of the image data as a multiplexed stream
Multiplex transmission step of transmitting The multiplex transmission step, Image data stored in the image information storage step
A reading sub-step for sequentially reading 1 or more different first image scans whose number is less than the total number of image data.
Holds the stream identifier and adds it to the read image data.
Stream identifier assigner for sequentially assigning one of
Bstep and Value equivalent to image data identifier corresponding to each image data
And the first image stream assigned to the corresponding image data.
And a second image stream identifier equivalent to the
Image correspondence table generation sub-step for generating an image correspondence table
When, The plurality of image streams to which a first image stream identifier is assigned;
Image data and the image Generated in the image correspondence table generation sub-step
And the corresponding image correspondence tables
Appears more than a certain time before the corresponding image data,
The same first image is provided between the image correspondence table and the corresponding image data.
Different image data assigned image stream identifier
Multiplexed sequentially so that no
Digital having a weighting sub-step
Broadcast method. 42. Pseudo dialogue using digital broadcasting
Digital broadcasting method to be realized, A plurality of image data each having an image data identifier
Image information storing step of storing Repeating a plurality of the image data as a multiplexed stream
Multiplex transmission step of transmitting The multiplex transmission step, Image data stored in the image information storage step
A reading sub-step for sequentially reading 1 or more different first image scans whose number is less than the total number of image data.
Holds the stream identifier and adds it to the read image data.
Image stream identifier assignment to sequentially assign one of
Sub-steps, Value equivalent to image data identifier corresponding to each image data
And the first image stream assigned to the corresponding image data.
And a second image stream identifier equivalent to the
Image correspondence table generation sub-step for generating an image correspondence table
When, The plurality of image streams to which a first image stream identifier is assigned;
Image data and generated in the image correspondence table generation sub-step
And the corresponding image correspondence tables
Appears more than a certain time before the corresponding image data,
The same first image is provided between the image correspondence table and the corresponding image data.
Different image data assigned image stream identifier
Multiplexed sequentially so that no
And a weighting sub-step, The first image stream identifier is MPEG2 (Moving
 Picture Experts Group 2) A stream defined by the standard
System identifier (stream_id) and packet identifier (P
ID) and the second image stream
The identifier is MP Stream identification defined in EG2 standard
Child (stream_id) and DVB (Digital Video Br)
oadcasting) component tag (c
component_tag). The multiplexing step comprises the steps of:
Repeatedly send the correspondence table with the tag, The image correspondence table is based on MPEG2 (Moving Picture Exper
ts Group2) Private section defined in the standard
Multiplexed as The image correspondence table identifier is table_id_exte
a digital broadcasting method, wherein 43. Pseudo dialogue using digital broadcasting
Digital broadcasting method to be realized, A plurality of image data each having an image data identifier
Image information storing step of storing Repeating a plurality of the image data as a multiplexed stream
Multiplex transmission step of transmitting The multiplex transmission step, Image data stored in the image information storage step
A reading sub-step for sequentially reading 1 or more different first image scans whose number is less than the total number of image data.
Holds the stream identifier and adds it to the read image data.
Image stream identifier assignment to sequentially assign one of
Sub-steps, Value equivalent to image data identifier corresponding to each image data
And the first image stream assigned to the corresponding image data.
And a second image stream identifier equivalent to the
Image correspondence table generation sub-step for generating an image correspondence table
When, The plurality of image streams to which a first image stream identifier is assigned;
Image data and generated in the image correspondence table generation sub-step
And the corresponding image correspondence tables
Appears more than a certain time before the corresponding image data,
The same first image is provided between the image correspondence table and the corresponding image data.
Different image data assigned image stream identifier
Multiplexed sequentially so that no
Weighted Subs Having a step and The first image stream identifier is MPEG2 (Moving
 Picture Experts Group 2) A stream defined by the standard
System identifier (stream_id) and packet identifier (P
ID) and the second image stream
The identifier is the stream identification defined in the MPEG2 standard.
Child (stream_id) and DVB (Digital Video Br)
oadcasting) component tag (c
component_tag). The multiplexing and transmitting step includes the step of:
Repeatedly send the correspondence table with the Nent tag, The image correspondence table is based on MPEG2 (Moving Picture Exper
ts Group2) Private section defined in the standard
Multiplexed as The image correspondence table identifier is table_id_exte
ntion, The image correspondence table includes the image reproduction start time and the image reproduction end time.
Is written and The reproduction start time is determined by the start frame of the corresponding image data.
PTS (Presentation
Time Stamp) The reproduction end time is determined by the last frame of the corresponding image data.
PTS (Presentation
Digital broadcast characterized by being the value of (Time Stamp)
Method. 44. A method in which a plurality of image data are repeatedly transmitted.
Digital broadcast receiving method for receiving digital broadcasts
hand, The image data is provided with a first image stream identifier.
And the plurality of image data are multiplexed and multiplexed.
And transmitted to the multiplexed stream,
A value equivalent to the image data identifier of the corresponding image data,
A first image stream assigned to the corresponding image data
A second image stream identifier equivalent to the identifier is described.
The image correspondence table is multiplexed.
It is transmitted repeatedly like image data, A receiving step of receiving a digital broadcast; Extraction of one image data from the received digital broadcast
Exit step, A memory step; A reproducing step of reproducing the extracted image data; An operation step for receiving a user's selection operation; Extraction conditions in the extraction step based on a user operation
And an extraction control step of setting a condition. The extracting step includes: An image correspondence table identifier that matches the set extraction conditions is added.
Image pairs for extracting the extracted image correspondence table from the multiplexed stream
A response extraction sub-step, The storing step includes: Image correspondence table storage subsystem for storing the extracted image correspondence table
Have a tep, The operation step includes: Specify from the image data being played back in the playback step
To accept the operation of switching to the image data
Having a reception sub-step, The extracting step further includes: An image to extract image data that matches the set extraction conditions
An image data extraction sub-step, The extraction control step includes: Image with a value equivalent to the image data identifier of the specified image data
An extraction condition setting service that sets a correspondence table identifier as an extraction condition
Bstep and Stored in the image correspondence table storage sub-step.
Identification of the second image stream described in the image correspondence table
And reads the read second image stream identifier.
Screen for setting extraction conditions in the extraction step using
Image data extraction control sub-step, The extracting step includes extracting an image after extracting one image data.
Digital broadcasting characterized by stopping data extraction
Receiving method. 45. A method in which a plurality of image data are repeatedly transmitted.
Digital broadcast receiving method for receiving digital broadcasts
hand, The image data is provided with a first image stream identifier.
And the plurality of image data are multiplexed and multiplexed.
Multiplexed stream transmitted as a stream In the vs
A value equivalent to the image data identifier of the corresponding image data
It is attached as a correspondence table identifier, and the second of the corresponding image data
Multiplexed image correspondence table with image stream identifier
This image correspondence table is also repeated like image data.
Has been sent, A receiving step of receiving a digital broadcast; Extraction of one image data from the received digital broadcast
Exit step, A memory step; A reproducing step of reproducing the extracted image data; An operation step for receiving a user's selection operation; Extraction conditions in the extraction step based on a user operation
And an extraction control step of setting a condition. The extracting step includes: An image correspondence table identifier that matches the set extraction conditions is added.
Image pairs for extracting the extracted image correspondence table from the multiplexed stream
A response extraction sub-step, The storing step includes: Image correspondence table storage subsystem for storing the extracted image correspondence table
Have a tep, The operation step includes: Specify from the image data being played back in the playback step
To accept the operation of switching to the image data
Having a reception sub-step, The extracting step further includes: An image to extract image data that matches the set extraction conditions
An image data extraction sub-step, The extraction control step includes: Image with a value equivalent to the image data identifier of the specified image data
An extraction condition setting service that sets a correspondence table identifier as an extraction condition
Bstep and Stored in the image correspondence table storage sub-step.
Identification of the second image stream described in the image correspondence table
And reads the read second image stream identifier.
Screen for setting extraction conditions in the extraction step using
Image data extraction control sub-step Has, The extracting step includes extracting an image after extracting one image data.
Stop extracting data, The first image stream identifier is defined in the MPEG2 standard.
Stream identifier (stream_id)
A packet identifier (PID).
The stream identifier is a stream defined by the MPEG2 standard.
Identifier and component tag defined by DVB standard
(Component_tag) and the multiplexing
The stream has a component tag and a packet identifier
The correspondence table that describes the correspondence is multiplexed and transmitted repeatedly
Has been The extracting step extracts the correspondence table, The image data extraction control sub-step includes:
The second image stream identifier is referred to as the first image stream.
Into the image data extraction sub-step.
Digitally setting extraction conditions
Broadcast reception method. 46. A method in which a plurality of image data are repeatedly transmitted.
Digital broadcast receiving method for receiving digital broadcasts
hand, The image data is provided with a first image stream identifier.
And the plurality of image data are multiplexed and multiplexed.
And transmitted to the multiplexed stream,
A value equivalent to the image data identifier of the corresponding image data
It is attached as a correspondence table identifier, and the second of the corresponding image data
Multiplexed image correspondence table with image stream identifier
This image correspondence table is also repeated like image data.
Has been sent, A receiving step of receiving a digital broadcast; Extraction of one image data from the received digital broadcast
Exit step, A memory step; A reproducing step of reproducing the extracted image data; An operation step for receiving a user's selection operation; Setting extraction conditions in the extraction means based on a user operation
Extraction control step, The extracting step includes: An image correspondence table identifier that matches the set extraction conditions is added.
Image pairs for extracting the extracted image correspondence table from the multiplexed stream
A response extraction sub-step, The storing step includes: Image correspondence table storage subsystem for storing the extracted image correspondence table
Have a tep, The operation step includes: Specify from the image data being played back in the playback step
To accept the operation of switching to the image data
Having a reception sub-step, The extracting step further includes: An image to extract image data that matches the set extraction conditions
An image data extraction sub-step, The extraction control step includes: Image with a value equivalent to the image data identifier of the specified image data
An extraction condition setting service that sets a correspondence table identifier as an extraction condition
Bstep and The image stored in the image correspondence table storing step
The second image stream identifier described in the image correspondence table
Read, using the read second image stream identifier
Image data extraction for setting extraction conditions in the extraction step
Output control sub-step, The extracting step includes extracting an image after extracting one image data.
Stop extracting data, At the time of starting reproduction of the corresponding image data,
Time is described, and the reproducing step further includes: A clock sub-step for counting time, The reproducing step decodes the extracted image data;
After that, when decoding of one image data is completed,
Notify the extraction control step of the completion of decryption, The extraction control step further includes: Start reproduction of image data described in the image correspondence table
By the time, there is a notification of completion of decoding from the reproduction step
Start time determination sub-step of determining whether or not When it is determined that there is no start time determination sub-step,
In the image data extraction sub-step, extraction of image data is performed.
Instruct to cancel, and in the image correspondence table extraction sub-step,
An extraction instruction sub-step for instructing extraction of a correspondence table.
And The first image stream identifier is defined in the MPEG2 standard.
Stream identifier (stream_id)
A packet identifier (PID).
The stream identifier is a stream defined by the MPEG2 standard.
Identifier and component tag defined by DVB standard
(Component_tag) and the multiplexing
The stream has a component tag and a packet identifier
The correspondence table that describes the correspondence is multiplexed and transmitted repeatedly
Has been The extracting step extracts the correspondence table, The image data extraction control sub-step includes:
The second image stream identifier is referred to as the first image stream.
Into the image data extraction sub-step.
Set the extraction conditions in the When the reproduction of the corresponding image data is completed,
Time is described, and the reproducing step further includes: A clock sub-step for counting time, The extraction control step further includes: End of reproduction of image data described in the image correspondence table
End time determination sub-step to determine whether the time has been reached
And In the end time determination sub-step, the reproduction of the image data ends
When it is determined that the time has arrived, the image data extraction
Extraction instruction instructing BST to stop extracting image data
Instruction sub-step, The image correspondence table is based on the stipulated in the MPEG2 standard.
Multiplexed as a bait section, The extraction condition setting sub-step includes an image correspondence table identifier and
And set table_id_extension
A digital broadcast receiving method, characterized in that: