JP4246938B2 - Program transmission processing apparatus and program transmission processing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a program transmission processing apparatus and a program transmission processing method for performing data broadcasting in digital broadcasting systems such as satellite broadcasting and terrestrial broadcasting.
[0002]
[Prior art]
In recent years, with the establishment of digital broadcasting technology, digital broadcasting has been started in satellite broadcasting systems using communication satellites and broadcasting satellites, and the transition to digital broadcasting is also planned in terrestrial broadcasting systems.
[0003]
In the above digital broadcasting stations, data broadcasting such as text broadcasting is performed in addition to television broadcasting. In data broadcasting, various information programs are broadcast, and information linked to the television broadcast program, information independent of the television broadcast program, and the like are provided therein.
[0004]
[Problems to be solved by the invention]
By the way, in the broadcasting station, since the multiplexed output rate, that is, the bandwidth of the broadcast wave is fixed in advance, the data to be transmitted by data broadcasting is transmitted from the multiplexed output rate to the video and audio transmission rate of the television broadcast program. It must be output at a rate minus. However, the transmission rate of video and audio varies depending on the program and video scene, and in some cases, the bandwidth that can be used for data broadcasting is narrowed, and a long time is required for data transmission. For this reason, the malfunction that the data of high priority data broadcasting cannot be transmitted in real time will arise.
[0005]
In addition, when the occupied bandwidth of television broadcasting decreases, an unused band is created and waste is increased.
[0006]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a program transmission processing apparatus and a program transmission processing method capable of efficiently transmitting data of data broadcasting according to fluctuations in the broadcast band.
[0007]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a program transmission processing device comprising: a television broadcast signal which is assigned to at least a part of a predetermined broadcast band and includes television broadcast material information indicating a material of a television broadcast program; A data broadcasting signal that is assigned to a band different from the band of the television broadcasting signal in the broadcasting band and includes data broadcasting material information indicating the material of the data broadcasting program is multiplexed by a multiplexing device, and digital broadcasting is performed. A program transmission processing apparatus that is used in a digital broadcast transmission system that broadcasts as a signal and performs transmission processing of a data broadcast signal,
An arithmetic means for inputting and analyzing a digital broadcast signal output from the multiplexing device and obtaining a band occupancy ratio of the television broadcast signal based on the analysis result, and a bandwidth of the television broadcast signal obtained by the arithmetic means Output means for outputting a data broadcast signal according to the occupation rate is provided.
[0008]
According to the first aspect of the present invention, the bandwidth occupancy of the television broadcast signal actually transmitted from the output of the multiplexer is obtained, and the information amount of the data broadcast signal is determined according to the bandwidth occupancy of the television broadcast signal. Therefore, optimal data transmission can be performed according to band fluctuation.
[0009]
According to a second aspect of the present invention, there is provided a program transmission processing device comprising: a television broadcast signal which is assigned to at least a part of a predetermined broadcast band and includes television broadcast material information indicating a material of a television broadcast program; Including a plurality of data broadcast material information indicating data broadcast program materials assigned to a band different from the television broadcast signal band in the broadcast band and each having a priority set, and control information related to the data broadcast program A program transmission processing apparatus for transmitting a data broadcast signal, which is used in a digital broadcast transmission system that multiplexes a data broadcast signal including period information with a multiplexing device and broadcasts it as a digital broadcast signal,
A digital broadcast signal output from the multiplexer is input and analyzed, and calculation means for determining the band occupancy rate of the television broadcast signal based on the analysis result and a part of the band of the data broadcast signal are set to a fixed band The remaining bandwidth is set to a variable bandwidth according to the bandwidth occupancy rate of the television broadcast signal, and at least the data broadcasting material information and the period information set at the highest priority are assigned to the fixed bandwidth and obtained by the calculation means. A plurality of data broadcast material information other than the data broadcast material information allocated to the fixed band is selectively allocated to the variable band according to a priority order according to a band occupancy ratio of the received television broadcast signal; And a data broadcast signal output means for sending out.
[0010]
According to the second aspect of the invention, the bandwidth occupancy rate of the television broadcast signal actually transmitted from the output of the multiplexer is obtained, and the information amount of the data broadcast signal is determined according to the bandwidth occupancy rate of the television broadcast signal. If the bandwidth occupancy rate of the television broadcast signal indicates the minimum, all data within the transmittable band can be viewed so that the user can quickly view the data broadcast program whenever the reception starts. When the bandwidth occupancy rate of the television broadcast signal exceeds a predetermined threshold value, the material information and the period information of the data broadcast program set with at least the highest priority are transmitted. Optimal data transmission according to bandwidth fluctuations can be performed. In addition, it is possible to ensure the transmission band of the data broadcast material information and the period information for which the highest priority is always set without being affected by the band fluctuation.
[0011]
Further, in the program transmission processing apparatus according to the second aspect, when other event message information is included in the data broadcast signal, the event message information is broadcast in a fixed band in the band of the data broadcast signal. Therefore, it is possible to always ensure a band for event message information without being affected by fluctuations in the broadcast band.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0013]
FIG. 1 is a block diagram showing an embodiment of an in-station system to which a program transmission processing apparatus according to the present invention is applied.
[0014]
As shown in the figure, this system includes encoders (ENC) 11 and 12, a multiplexer (MUX) 13, an encoding multiplex control unit (EMC) 14, a data broadcast transmission unit 15, and an automatic program transmission control unit. (APC) 16, local clock 17, data server (DS) 18, and distributor 19 are provided.
[0015]
The encoder 11 compresses and encodes the video signal of the television broadcast program using the MPEG2 encoding method to generate a program information signal (bit stream) and outputs it to the multiplexer 13. The encoder 12 compresses and encodes the audio signal of the television broadcast program using an AAC (Advanced Audio Coding) encoding method, generates a bit stream, and outputs the bit stream to the multiplexer 13.
[0016]
The multiplexer 13 multiplexes the outputs of the encoders 11 and 12 and the data broadcast data output from the data broadcast transmission unit 15 and transmits the multiplexed data as a transport stream. Also, based on the information output from the encoding and multiplexing control unit 14, data such as PMT (Program Map Table), PAT (Program Association Table), etc. is generated and multiplexed on the transport stream.
[0017]
The encoding multiplex control unit 14 controls the encoders 11 and 12 and the multiplexer 13 based on the instruction information provided from the automatic program transmission control unit 16, the broadcast schedule data, and the knitting time measured by the local clock 17. Note that the PMT and PAT include information related to programs and information indicating whether or not data broadcasting data is included in the transport stream.
[0018]
The data broadcast transmission unit 15 transmits the input data broadcast data to the multiplexer 13 based on the organization information provided from the data server 18 and the instruction information provided from the automatic program transmission control unit 16. The automatic program transmission control unit 16 transmits instruction information to the encoding multiplexing unit 14 and the data broadcast transmission unit 15 according to the broadcast schedule data provided from the data server 18 and the program scheduling time measured by the local clock 17. The encoding and multiplexing process of the encoding and multiplexing unit 14 is controlled, and the transmission process of the data broadcast transmitting unit 15 is controlled.
[0019]
The distributor 19 distributes the transport stream output from the multiplexer 13 and outputs one of the distributed transport streams to the data broadcast transmission unit 15.
[0020]
FIG. 2 is a block diagram showing a specific configuration of the data broadcast sending unit 15.
[0021]
The data broadcast transmission unit 15 includes a DII section buffer 151, an event message section buffer 152, data broadcast service packet buffers 1531 to 153n, a multiplex processing unit 154, an output buffer 155, and a television broadcast transmission rate calculation unit 156.
[0022]
The DII section buffer 151 stores a predetermined number of DII (Download Information Indication) section packet sequences as period information that is input from the outside and includes control information related to a data broadcast program.
[0023]
The event message section buffer 152 stores a predetermined number of event message section packet sequences that are input from the outside and include additional information related to or independent of the data broadcast program.
[0024]
The data broadcast service packet buffers 1531 to 153n are input from the outside and the material information of the first data broadcast program for which real-time property is required, the second not requiring real-time property compared to the first data broadcast program. A predetermined number of data broadcast service packet sequences including material information of the data broadcast program are stored.
[0025]
The multiprocessing unit 154 is based on the organization information from the data server 18, the instruction information from the automatic program transmission control unit 17, and the calculation result by the television broadcast transmission rate calculation unit 156, and the DII section buffer 151 and the event message section buffer 152. Then, packets are fetched from the data broadcast service packet buffers 1531 to 153n, the packets are analyzed, and the number of fetched packet sequences are written into the output buffer 155.
[0026]
The output buffer 155 stores the packet sequence from the multiplex processing unit 154 to generate a data broadcast signal and outputs it to the multiplexer 13 as appropriate.
[0027]
The television broadcast transmission rate calculation unit 156 takes in the transport stream output from the multiplexer 13 and analyzes the transport stream. Based on the analysis result, the television broadcast signal as shown in FIG. The bandwidth occupancy rate, that is, the transmission rate is calculated.
[0028]
On the other hand, when the transmission rate calculated by the television broadcast transmission rate calculation unit 156 exceeds the threshold, the multiplex processing unit 154 performs the DII section buffer 151 and the event message section buffer at a preset fixed rate. Each of the packets is taken from 152 and written to the output buffer 155, and the data with the highest priority set from the data broadcast service packet buffers 1531 to 153n based on the priority of the data broadcast program notified from the data server 18 Only the packet including the material information of the broadcast program is fetched and written into the output buffer 155.
[0029]
Next, the processing operation of the above configuration will be described below.
First, the basic concept of transmission is to use the remaining band of the band used for video / audio of a television broadcast program as the transmission band of data broadcasting. Since video / audio in digital broadcasting employs a compression encoding technique defined in MPEG2, the band for television broadcasting varies depending on the video scene.
[0030]
Currently, data for data broadcasting is transmitted at a fixed bit rate with an extra bandwidth reserved from the maximum video / audio code amount, so nothing is multiplexed even when the video / audio code amount decreases. There is no bandwidth and is wasted.
[0031]
Therefore, in the present embodiment, the DII section buffer 151, the event message, and the like according to the transmission rate of the television broadcast signal obtained by the television broadcast transmission rate calculation unit 156 in the multiplex processing unit 154 of the data broadcast transmission unit 15. Since the packets are selectively fetched from the section buffer 152 and the data broadcast service packet buffers 1531 to 153n in accordance with the priority order and written to the output buffer 155, the data broadcast service packets are transferred to the free bandwidth that has been generated conventionally. It becomes possible to send out, and the waiting time can be eliminated on the receiver side.
[0032]
Here, in the data broadcast transmission unit 15, the multiprocessing unit 154 performs a DII section buffer 151, an event message section buffer 152, a data broadcast service in accordance with an instruction from the automatic program transmission control unit 16 and organization information from the data server 18. Packets are selectively fetched from the packet buffers 1531 to 153n. At the same time, the multiplex processing unit 154 writes the data broadcast service packet, the DII section packet, and the event message section packet with the highest priority set at the preset fixed rate to the output buffer 155 and also transmits the television broadcast signal. The next-order data broadcast service packet is written to the output buffer 155 at a variable rate according to the transmission rate.
[0033]
Then, the output buffer 155 sends a data broadcast signal of a packet sequence as shown in FIG. In data broadcasting, all programs are repeatedly transmitted at regular time intervals so that the user can view them promptly regardless of when the user starts reception.
[0034]
On the other hand, when the multiplex processing unit 154 determines that the transmission rate of the television broadcast signal obtained by the television broadcast transmission rate calculation unit 156 exceeds a predetermined threshold, the DII section buffer 151 and the event message section buffer 152 The DII section packet and the event message section packet are taken from and written to the output buffer 155, and only the data broadcasting service packet with the highest priority set is taken from the data broadcasting service packet buffer 1531 to 153n and written to the output buffer 155. .
[0035]
Then, the output buffer 155 sends a data broadcast signal of a packet sequence as shown in FIG.
[0036]
As a result, transmission of data of a high-priority data broadcast program associated with a video scene such as a quiz problem or one scene of a drama is affected even if the video / audio code amount of the television broadcast program is maximized. It is possible to transmit without giving.
[0037]
Thereafter, the multiplex processing unit 154 monitors the transmission rate calculated by the television broadcast transmission rate calculation unit 156, and when the transmission rate of the television broadcast signal becomes a predetermined threshold value or less, the data broadcast service packet buffer. Reading data broadcasting service packets other than the highest order from 1531 to 153n is resumed.
[0038]
As described above, in the above embodiment, when the transmission rate of the television broadcast signal obtained by the television broadcast transmission rate calculation unit 13 exceeds a predetermined threshold, the multiplex processing unit 154 performs the DII section buffer 151 and The DII section packet and the event message section packet are fetched from the event message section buffer 152 and written to the output buffer 155, and only the data broadcasting service packet with the highest priority set is fetched from the data broadcasting service packet buffers 1531 to 153n, The data is written in the output buffer 155.
[0039]
Therefore, it is possible to efficiently transmit data broadcast data with high priority by effectively using a limited band in the broadcast band for data broadcasting. In addition, it is possible to always secure the bandwidth of the data broadcasting service packet, the DII section packet, and the event message section packet with high priority without being affected by the bandwidth fluctuation.
[0040]
Moreover, when the transmission rate of the television broadcast signal indicates the minimum, all programs can be transmitted within the transmittable band so that the user can promptly view the data broadcast program whenever the user starts reception. Therefore, as in the prior art, since the broadcast band for data broadcasting is fixed, there is no waste in the band, and this makes it possible to perform optimal data transmission according to the fluctuation of the band.
[0041]
In the above embodiment, since the transmission of the data broadcast data is controlled by the output of the multiplexer 13, the transmission rate of the television broadcast signal can be obtained with high accuracy and the composition information sent from the data server 18 can be obtained. Even if there is a change, it is possible to respond immediately.
[0042]
The present invention is not limited to the above embodiment. For example, in the above embodiment, when the transmission rate of the television broadcast signal exceeds a predetermined threshold, the data broadcast service packet, the DII section packet, and the event message section packet with the highest priority set are transmitted. However, only the data broadcasting service packet and the DII section packet set with the highest priority may be used. The use of event messages is not necessarily required depending on the content. In addition, the fixed bandwidth can be set arbitrarily, and depending on the setting, it is possible to always transmit data broadcast packets with the first, second, and third priorities.
[0043]
In the above embodiment, the television broadcasting system using the fixed reception service has been described. However, for example, the present invention can also be applied to a mobile broadcasting system using a portable receiving terminal and a broadcasting system for a portable receiving terminal. is there. The present invention can also be applied to a computer system using a leased line network or the Internet.
[0044]
In the above embodiment, the hardware configuration of each unit of the data broadcast transmission unit 15 has been described. However, at least the multiplex processing unit 154 and the television broadcast transmission rate calculation unit 156 can be realized by a software configuration.
[0045]
First, when the control process shown in FIG. 5 is started, the data broadcast transmission unit 15 executes a data broadcast signal transmission process at a default rate instructed by the data server 18 (step ST5a).
[0046]
Subsequently, the data broadcast transmission unit 15 calculates the transmission rate of the television broadcast signal from the output of the multiplexer 13 (step ST5b), and the default rate instructed from the data server 18 is the transmission rate obtained from the output of the multiplexer 13, That is, it is determined whether or not the transmission rate is higher than the transmission rate for null packets and data packets (step ST5c).
[0047]
If the default rate is larger than the transmission rate, the data broadcast transmission unit 15 sets the default rate to the next rate (step ST5d), and transmits the DII section packet and the event message section packet based on the set rate. At the same time, the data broadcast service packet is selectively transmitted according to the priority order (step ST5e).
[0048]
On the other hand, if the default rate is smaller than the transmission rate, the data broadcast transmission unit 15 sets the calculated transmission rate as the next rate (step ST5f), and based on the set rate, the DII section packet and the event message section packet are set. At the same time, the data broadcast service packet is selectively transmitted according to the priority order (step ST5g).
[0049]
In addition, in the said process sequence, if it can perform at least step ST5b, step ST5f, and step ST5g, it is fully applicable.
[0050]
In addition, the configuration of the in-station system, the type and configuration of the data broadcast transmission unit, the control procedure and content of the data broadcast transmission unit when performing data broadcast, the content of the data broadcast packet, etc. also depart from the gist of the present invention. Various modifications can be made without departing from the scope.
[0051]
【The invention's effect】
As described above in detail, according to the present invention, for example, it is possible to finely detect a change in a broadcast band assigned to a television broadcast signal, and efficiently transmit data broadcast data according to the change in the band of the television broadcast signal. It is possible to provide a program transmission processing apparatus and a program transmission processing method which can be performed.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of an in-station system to which a program transmission processing apparatus according to the present invention is applied.
2 is a block diagram showing a specific configuration of a data broadcast transmission unit shown in FIG. 1. FIG. 3 is a diagram showing band characteristics in the same embodiment.
FIG. 4 is a timing chart for explaining a processing operation in the embodiment.
FIG. 5 is a flowchart for explaining a processing operation of a data broadcast sending unit according to another embodiment of the present invention.
[Explanation of symbols]
11, 12 ... Encoder (ENC),
13: Multiplexer (MUX),
14 ... Encoding multiplex control unit (EMC),
15: Data broadcast sending section,
16 ... Automatic program transmission control part (APC),
17 ... Clock clock,
18 ... Data server (DS),
19 ... distributor,
151 ... DII section buffer,
152 ... event message section buffer,
1531-153n ... Data broadcasting service packet buffer,
154 ... multiple processing unit,
155 ... Output buffer,
156: Television broadcast transmission rate calculation unit.

Claims (10)

A first service broadcast signal that is assigned to at least a part of a predetermined broadcast band and includes a first service material information that indicates the material of the first service broadcast program, and the band varies; and digital multiplexes the above the band of the first service broadcast signals assigned to different bands, and the second service broadcasting signal including the second service material information indicating a material of a second service broadcast program being A program transmission processing apparatus connected to a preceding stage of a multiplexing apparatus for transmitting as a broadcast signal and performing a transmission process of the second service broadcast signal;
An arithmetic means for inputting and analyzing the digital broadcast signal output from the multiplexing device, and determining an occupancy ratio in the broadcast band of the first service broadcast signal based on the analysis result;
A program transmission processing apparatus comprising: output means for outputting the second service broadcast signal in accordance with an occupation ratio in the broadcast band of the first service broadcast signal obtained by the computing means. A first service broadcast signal that is assigned to at least a part of a predetermined broadcast band and includes a first service material information that indicates the material of the first service broadcast program, and the band varies; and Second service material information indicating a plurality of second service broadcast program materials assigned to a band different from the band of the first service broadcast signal and having a priority set therein, the second service material information, A second service broadcast signal including period information including control information related to the service broadcast program is multiplexed and connected to the preceding stage of the multiplexing device for transmitting as a digital broadcast signal , and the second service broadcast signal is transmitted. A program transmission processing device,
An arithmetic means for inputting and analyzing the digital broadcast signal output from the multiplexing device, and determining an occupancy ratio in the broadcast band of the first service broadcast signal based on the analysis result;
A part of the band of the second service broadcast signal is set to a fixed band, and the remaining band is set to a variable band corresponding to an occupation ratio in the broadcast band of the first service broadcast signal, and at least the highest The second service material information and the period information set in the priority order are assigned to the fixed band, and according to the occupation ratio in the broadcast band of the first service broadcast signal obtained by the calculation means, Output means for selectively allocating a plurality of second service material information other than the second service material information allocated to the fixed band to the variable band according to a priority order and transmitting the second service material information as the second service broadcast signal. The program transmission processing apparatus characterized by the above-mentioned. The output means includes
A plurality of input buffers storing the plurality of second service material information and the period information for each information;
An output buffer for storing input information and outputting it as the second service broadcast signal;
The second service material information and the period information set at the highest priority among the plurality of input buffers are read at a rate corresponding to the fixed band, stored in the output buffer, and obtained by the calculation means. A plurality of second services other than the second service material information allocated to the fixed band from among the plurality of input buffers according to the occupation ratio of the first service broadcast signal in the broadcast band. 3. The program transmission processing apparatus according to claim 2, further comprising a read control means for selectively reading material information according to priority and storing it in the output buffer. A television broadcast signal that is assigned to at least a part of a predetermined broadcast band and that includes a television broadcast material information that indicates the material of a television broadcast program and that has a variable band, and the television in the broadcast band Connected to the preceding stage of a multiplexing device that is assigned to a band different from the band of the broadcast signal and that multiplexes the data broadcast signal including the data broadcast material information indicating the material of the data broadcast program and sends it as a digital broadcast signal , A program transmission processing apparatus for performing transmission processing of a data broadcast signal,
An arithmetic means for inputting and analyzing the digital broadcast signal output from the multiplexing device, and determining an occupancy ratio in the broadcast band of the television broadcast signal based on the analysis result;
A program transmission processing apparatus comprising: output means for outputting the data broadcast signal in accordance with an occupation ratio of the television broadcast signal obtained by the computing means in the broadcast band . A television broadcast signal that is assigned to at least a part of a predetermined broadcast band and that includes a television broadcast material information that indicates the material of a television broadcast program and that has a variable band, and the television in the broadcast band A data broadcast signal including a plurality of data broadcast material information indicating data broadcast program materials assigned to a band different from the broadcast signal band and each having a priority set, and periodic information including control information related to the data broadcast program Is a program transmission processing device connected to a preceding stage of a multiplexing device that multiplexes and transmits as a digital broadcast signal, and performs a transmission processing of the data broadcast signal,
An arithmetic means for inputting and analyzing the digital broadcast signal output from the multiplexing device, and determining an occupancy ratio in the broadcast band of the television broadcast signal based on the analysis result;
A part of the band of the data broadcast signal is set to a fixed band, and the remaining band is set to a variable band according to the occupation ratio in the broadcast band of the television broadcast signal, and at least set to the highest priority. The data broadcast material assigned to the fixed band is assigned to the fixed band according to the occupation ratio in the broadcast band of the television broadcast signal obtained by the computing means. A program transmission processing apparatus comprising: data broadcast signal output means for selectively allocating a plurality of data broadcast material information other than information to the variable band according to a priority order and transmitting the information as the data broadcast signal. The data broadcast signal output means includes
A plurality of data broadcast material information, a plurality of input buffers storing the period information for each information;
An output buffer for storing input information and outputting the data broadcast signal;
The data broadcasting material information and period information set at least at the highest priority among the plurality of input buffers are read out at a rate corresponding to the fixed band and stored in the output buffer, and are obtained by the computing means. A plurality of data broadcast material information other than the data broadcast material information allocated to the fixed band is selectively selected from the plurality of input buffers according to a priority order according to an occupation ratio of the television broadcast signal in the broadcast band. 6. The program transmission processing apparatus according to claim 5, further comprising a read control means for reading the data into the output buffer and storing it in the output buffer. A television broadcast signal assigned to at least a portion of the bandwidth of Jo Tokoro in broadcast band, and the band containing the television broadcast material information indicating a material of a television broadcast program is varied, the television in the broadcast band A plurality of data broadcast material information indicating the material of the data broadcast program, which is assigned to a band different from the band of the John broadcast signal, and each of which has a priority set, period information including control information related to the data broadcast program, and other A program transmission processing device that is connected to a preceding stage of a multiplexing device that multiplexes a data broadcast signal including event message information including additional information and transmits it as a digital broadcast signal, and performs a transmission process of the data broadcast signal,
An arithmetic means for inputting and analyzing the digital broadcast signal output from the multiplexing device, and determining an occupancy ratio in the broadcast band of the television broadcast signal based on the analysis result;
A part of the band of the data broadcast signal is set to a fixed band, the remaining band is set to a variable band according to the occupation ratio of the television broadcast signal in the broadcast band , and at least the highest priority is set The data broadcasting material information, the period information and the event message information are allocated to the fixed band, and are allocated to the fixed band according to the occupation ratio in the broadcast band of the television broadcast signal obtained by the calculation means. A program transmission processing apparatus comprising: data broadcast signal output means for selectively allocating a plurality of data broadcast material information other than the data broadcast material information to the variable band in accordance with a priority order and transmitting the data broadcast signal as the data broadcast signal . The data broadcast signal output means includes
A plurality of input buffers storing the plurality of data broadcasting material information, the period information and the event message information for each information;
An output buffer for storing input information and outputting the data broadcast signal;
The data broadcasting material information, the cycle information and the event message information set with at least the highest priority among the plurality of input buffers are read out at a rate corresponding to the fixed band and stored in the output buffer, and the computing means Priority is given to a plurality of data broadcast material information other than the data broadcast material information allocated to the fixed band from the plurality of input buffers, in accordance with the occupation ratio in the broadcast band of the television broadcast signal obtained by 8. The program transmission processing apparatus according to claim 7, further comprising: a read control unit that selectively reads out according to the rank and stores the read in the output buffer. A first service broadcast signal which is assigned to at least a part of a predetermined broadcast band and includes first service material information indicating a material of the first service broadcast program; and the first service broadcast signal in the broadcast band The second service broadcast signal that is assigned to a band different from the band of the first service broadcast signal and includes the second service material information indicating the material of the second service broadcast program is multiplexed and transmitted as a digital broadcast signal A program transmission processing method used in a program transmission processing apparatus connected to a preceding stage of a multiplexing apparatus for performing transmission processing of the second service broadcast signal,
A first step of inputting and analyzing a digital broadcast signal output from the multiplexing device, and determining an occupancy ratio of the first service broadcast signal in the broadcast band based on the analysis result;
And a second process of outputting the second service broadcast signal according to an occupation rate in the broadcast band of the first service broadcast signal obtained by the first process. Program transmission processing method. A television broadcast signal that is assigned to at least a part of a predetermined broadcast band and includes television broadcast material information indicating a material of a television broadcast program, and a band of the television broadcast signal in the broadcast band Is connected to a preceding stage of a multiplexing device that multiplexes a data broadcast signal that includes data broadcast material information indicating data broadcast program material and transmits it as a digital broadcast signal. A program transmission processing method used in a program transmission processing apparatus for performing transmission processing ,
A first step of inputting and analyzing a digital broadcast signal output from the multiplexing device, and determining an occupation rate in the broadcast band of the television broadcast signal based on the analysis result;
And a second step of outputting the data broadcast signal in accordance with an occupation ratio of the television broadcast signal obtained in the first step in the broadcast band .

Images