JP4532062B2 - Information recording medium, information recording apparatus and method, information reproducing apparatus and method, information recording / reproducing apparatus and method, information recording program, and information reproducing program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information recording medium on which a still image is recorded, reproduction of the still image from the information recording medium, and recording of a still image on the information recording medium.
[0002]
[Prior art]
A DVD audio disk is known as an information recording medium on which a plurality of still images are recorded. In addition to audio information such as music, a plurality of still image information is recorded on the DVD audio disc, and such still image information can be reproduced in synchronization with reproduction of the audio information. Therefore, it is possible to continuously reproduce a plurality of still image information as the audio information is reproduced.
[0003]
[Problems to be solved by the invention]
Unlike a moving image, a still image does not have a movement element, so that it may be too simple and not interesting just by switching and reproducing a plurality of still images. For this reason, even with the same still image, it is possible to change the reproduction of the still image by providing various transition effects (also referred to as transitions) at the start of reproduction or at the end of reproduction.
[0004]
An object of the present invention is to give various transition effects to continuous reproduction of still images with as little information as possible.
[0006]
  Claim1In the information recording apparatus, the information recording apparatus includes a first recording unit configured to record a plurality of still image information on an information recording medium, and a first still image set including a plurality of still image information to be reproduced continuously. Second recording means for recording on the information recording medium external transition effect information designating a start transition effect of the still image information and an end transition effect of the last still image information in the still image set, and the still image set A third recording means for recording internal transition effect information for designating a start transition effect and an end transition effect of each still image information among a plurality of still image information included in the information recording medium, and the external transition effect Each of the information and the internal transition effect information includes transition effect type information indicating a type of transition effect, and transition effect time information indicating a period of the transition effect, and the internal transition effect information. , Internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information, the internal start transition effect type information, the internal end transition effect type information, and the internal start Each of the transition effect time information and the internal end transition effect time information is defined in the same manner for all the still images included in the still image set.
[0007]
  Claim2In the information recording method, the information recording method includes a first recording step of recording a plurality of still image information on an information recording medium, and a first still image set including a plurality of still image information to be reproduced continuously. A second recording step of recording external transition effect information specifying the start transition effect of the still image information and the end transition effect of the last still image information in the still image set on the information recording medium, and the still image set A third recording step of recording, on the information recording medium, internal transition effect information that specifies a start transition effect and an end transition effect of each still image information among a plurality of still image information included in the information recording medium, and the external transition effect Each of the information and the internal transition effect information includes transition effect type information indicating a type of transition effect, and transition effect time information indicating a period of the transition effect, and the internal transition effect information. , Internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information, the internal start transition effect type information, the internal end transition effect type information, and the internal start Each of the transition effect time information and the internal end transition effect time information is defined in the same manner for all the still images included in the still image set.
[0008]
  Claim3An information reproducing apparatus for reproducing an information recording mediumThe information recording medium is a still image set composed of a plurality of still image information recorded by an information recording device or reproduced by an information reproducing device and a plurality of still image information to be reproduced continuously. The start transition effect of the first still image information and the end transition effect of the last still image information in the still image set are designated, and the plurality of still images are recorded by the information recording device or the information reproducing device. The external transition effect information read when reproducing information and the start transition effect and end transition effect of each still image information among a plurality of still image information included in the still image set are designated and recorded by the information recording device. Or internal transition effect information that is read by the information reproducing device when reproducing the plurality of still image information. A computer-readable information recording medium, wherein each of the external transition effect information and the internal transition effect information includes transition effect type information indicating a type of transition effect, transition effect time information indicating a period of the transition effect, and The internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information, and internal end transition effect time information, and the internal start transition effect type information, the internal transition effect type information, Each of the end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is defined in the same manner for all the still images included in the still image set, and the information reproducing apparatus IsReading means for reading the plurality of still image information, the external transition effect information and the internal transition effect information from the information recording medium, and start of the first still image information included in the still image set according to the external transition effect information A portion and the end portion of the last still image information included in the still image set are reproduced, and the start of each still image information among a plurality of still image information included in the still image set according to the internal transition effect information And reproduction means for reproducing the portion and the end portion.
[0009]
  Claim4An information reproduction method for reproducing an information recording mediumThe information recording medium is a still image set composed of a plurality of still image information recorded by an information recording device or reproduced by an information reproducing device and a plurality of still image information to be reproduced continuously. The start transition effect of the first still image information and the end transition effect of the last still image information in the still image set are designated, and the plurality of still images are recorded by the information recording device or the information reproducing device. The external transition effect information read when reproducing information and the start transition effect and end transition effect of each still image information among a plurality of still image information included in the still image set are designated and recorded by the information recording device. Or internal transition effect information that is read by the information reproducing device when reproducing the plurality of still image information. A computer-readable information recording medium, wherein each of the external transition effect information and the internal transition effect information includes transition effect type information indicating a type of transition effect, transition effect time information indicating a period of the transition effect, and The internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information, and internal end transition effect time information, and the internal start transition effect type information, the internal transition effect type information, Each of the end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is defined in the same manner for all the still images included in the still image set, and the information reproducing method The position isReading the plurality of still image information, the external transition effect information, and the internal transition effect information from the information recording medium, and starting the first still image information included in the still image set according to the external transition effect information A portion and the end portion of the last still image information included in the still image set are reproduced, and the start of each still image information among a plurality of still image information included in the still image set according to the internal transition effect information A reproduction step of reproducing the portion and the end portion.
[0010]
  Claim5In the information recording / reproducing apparatus, the information recording / reproducing apparatus includes a first recording unit that records a plurality of still image information on an information recording medium, and a still image set including a plurality of still image information to be reproduced continuously. A second recording means for recording external transition effect information specifying the start transition effect of the first still image information and the end transition effect of the last still image information in the still image set on the information recording medium; and the still image Third recording means for recording internal transition effect information for designating start transition effect and end transition effect of each still image information among a plurality of still image information included in the set on the information recording medium; and the plurality of still image information Reading means for reading the external transition effect information and the internal transition effect information from the information recording medium, and the first included in the still image set according to the external transition effect information Playing back the start portion of the still image information and the end portion of the last still image information included in the still image set, and according to the internal transition effect information, between each of the plurality of still image information included in the still image set Reproduction means for reproducing the start part and the end part of still picture information, each of the external transition effect information and the internal transition effect information includes transition effect type information indicating the type of transition effect, and the transition effect Transition effect time information indicating the period of the internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information, Each of the internal start transition effect type information, the internal end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is the stationary Characterized in that it is defined in the same for all of the still image in the set.
[0011]
  Claim6The information recording / reproducing method includes a first recording step of recording a plurality of still image information on an information recording medium, and a still image set including a plurality of still image information to be reproduced continuously. A second recording step of recording external transition effect information specifying the start transition effect of the first still image information and the end transition effect of the last still image information in the still image set on the information recording medium; and the still image A third recording step of recording, on the information recording medium, internal transition effect information designating a start transition effect and an end transition effect of each still image information among a plurality of still image information included in the set; and the plurality of still image information A reading step of reading the external transition effect information and the internal transition effect information from the information recording medium, and the first included in the still image set according to the external transition effect information Playing back the start portion of the still image information and the end portion of the last still image information included in the still image set, and according to the internal transition effect information, between each of the plurality of still image information included in the still image set A reproduction step of reproducing a start portion and an end portion of still image information, each of the external transition effect information and the internal transition effect information includes transition effect type information indicating a type of transition effect, and the transition effect. Transition effect time information indicating the period of the internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information, Each of the internal start transition effect type information, the internal end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is the stationary Characterized in that it is defined in the same for all of the still image in the set.
[0012]
  Claim7The information recording program comprises: a first recording means for recording a plurality of still picture information on an information recording medium by being executed on a computer; and a plurality of still picture information to be reproduced continuously. A second recording unit that records on the information recording medium external transition effect information that specifies a start transition effect of the first still image information in the configured still image set and an end transition effect of the last still image information in the still image set; Recording means, third recording means for recording internal transition effect information for designating start transition effect and end transition effect of each still image information among a plurality of still image information included in the still image set, on the information recording medium, The computer is caused to function, and each of the external transition effect information and the internal transition effect information includes transition effect type information indicating a type of transition effect, and the change effect information. Transition effect time information indicating the duration of the effect, the internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information, Each of the internal start transition effect type information, the internal end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is the same for all still images included in the still image set. It is characterized by that.
[0013]
  Claim8The invention described inIn the information reproduction program for reproducing the information recording medium, the information recording medium includes a plurality of still image information recorded by the information recording apparatus or reproduced by the information reproducing apparatus, and a plurality of pieces of information to be reproduced continuously. The start transition effect of the first still image information in the still image set constituted by the still image information and the end transition effect of the last still image information in the still image set are designated and recorded by the information recording device Or, the external transition effect information read when the information playback device reproduces the plurality of still image information, and the start transition effect and the end transition effect of each still image information between the plurality of still image information included in the still image set. The information is recorded by the information recording device or read when the information reproducing device reproduces the plurality of still image information. Internal transition effect information recorded on the computer-readable information recording medium, each of the external transition effect information and the internal transition effect information, transition effect type information indicating the type of transition effect, Transition effect time information indicating a period of the transition effect, and the internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information, and internal end transition effect time information. Each of the internal start transition effect type information, the internal end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information for all still images included in the still image set. And the information reproduction program isBy running on the computer,SaidReading means for reading the plurality of still image information, the external transition effect information and the internal transition effect information from the information recording medium from the information recording medium, the first still image included in the still image set according to the external transition effect information A start portion of image information and an end portion of the last still image information included in the still image set, and each still image between a plurality of still image information included in the still image set according to the internal transition effect information The computer is caused to function as reproduction means for reproducing a start portion and an end portion of image information.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
  In one embodiment of the invention,In the information recording apparatus, a first recording means for recording a plurality of still image information on an information recording medium, and a start of the first still image information in a still image set composed of a plurality of still image information to be reproduced continuously A second recording means for recording external transition effect information for designating a transition effect and an end transition effect of the last still image information in the still image set on the information recording medium; and a plurality of still images included in the still image set And third recording means for recording, on the information recording medium, internal transition effect information for designating a start transition effect and an end transition effect of each still image information between image information, the external transition effect information and the internal transition effect Each piece of information includes transition effect type information indicating the type of transition effect, and transition effect time information indicating the period of the transition effect, and the internal transition effect information is an internal start transition. Including internal type transition effect type information, internal end transition effect type information, internal end transition effect type information, internal start transition effect time information Each of the internal end transition effect time information is defined in the same manner for all the still images included in the still image set.
[0015]
As the information recording medium, a medium such as a CD, a DVD, or a high recording density optical disk with a further improved recording density can be preferably used. However, the present invention is also implemented by a recording medium other than the optical disk. It is possible to do.
[0016]
On the information recording medium, first, a plurality of pieces of still image information that can be reproduced independently are recorded, and they can be reproduced continuously. In this embodiment, when a plurality of still image information is reproduced, at the time of transition (that is, when reproduction is switched from one still image information to the next still image information. In this specification, “transition ( transition) "is also used interchangeably). The effect (transition effect) can be defined.
[0017]
A plurality of still image information to be reproduced continuously is logically reproduced as a predetermined number of sets, and the predetermined number of still image information is referred to as a “still image set”. Therefore, by continuing to reproduce the still image set, a large number of still image information can be reproduced continuously. Since one still image set includes a plurality of pieces of still image information, the position at which the still image information changes is as follows: (1) At the beginning of the still image set, that is, at the start of the first still image information in the still image set (2) at the start of each still image information among a plurality of still image information in the still image set, (3) at the end of each still image information between a plurality of still image information in the still image set, and ( 4) The end of the still image set, that is, the end of the last still image information in the still image set exists. Here, in this embodiment, transition effects are defined independently for these four transition positions. That is, the beginning and end of the still image set are defined as external transition effects, and a plurality of still images in the still image set are defined as internal transition effects. As for the external transition effect, the head side of the still image set is defined as the external start transition effect, and the tail side of the still image set is defined as the external end transition effect. Similarly, for the internal transition effect, the start side of each still image information is defined as an internal start transition effect, and the end side of each still image information is defined as an internal end transition effect. By defining transition effects independently for each transition position in this way, various different transition effects can be defined with a relatively small amount of information, and still images can be created without increasing the amount of information more than necessary. Various changes can be given at the time of transition in the continuous reproduction of.
[0018]
As each transition effect, transition effect type information indicating the type of transition effect and transition effect time information indicating the period of the transition effect are defined. The transition effect type information can be, for example, information that specifies whether to display the still image by a wipe display, a slide display, or a dissolve display when the display of the still image information starts or ends. . As a result, it is possible to change the still image with different transition types at the above-described four transition positions. Moreover, transition effect time information is information which prescribes | regulates how many time widths such each kind of transition effect is performed. Therefore, if different transition effect time information is defined at the above four transition positions, still image display starts or ends slowly at one transition position, and still image display starts or ends instantaneously at another transition position. It is possible to have a change, such as to do.
[0019]
On the other hand, in one still image set, the start transition effect of each still image information is defined to be the same for all still image information, and the end transition effect of each still image information is also the same for all still image information. The image information is defined to be the same. Therefore, it is necessary to individually assign transition effect information to all still image information by logically defining a plurality of still image information that is appropriate to apply the same transition effect as one still image set. Therefore, various transition effects can be set effectively with a small amount of information.
[0020]
Reproduction sequence information when continuously reproducing a plurality of still image information can be recorded on the information recording medium as, for example, playlist information. In this case, each transition effect information can be included in the playlist information. Thereby, transition effect information can be defined and held in association with the playback sequence.
[0021]
In another embodiment of the present invention, there are provided an information recording apparatus and an information recording method for recording the above still image information and each transition effect information on an information recording medium such as an optical disk. Further, each still image information is read out from the above-described information recording medium on which each information is recorded, and each still image information is reproduced while realizing the transition effect based on the transition effect information defined for each information. An information reproducing apparatus and an information reproducing method that can be used are provided. Furthermore, an information recording / reproducing apparatus and an information recording / reproducing method having both information recording and information reproducing functions can be provided. In addition, by executing the program on a computer, an information recording program for causing the computer to function as an information recording device and an information reproducing program for causing the computer to function as an information reproducing device can be provided.
[0022]
The details of each of the above embodiments will be clarified by the description of the following examples.
[0023]
【Example】
[Information recording medium]
Embodiments of the information recording medium of the present invention will be described with reference to FIGS. In this embodiment, the information recording medium of the present invention is applied to an optical disc of a type capable of recording (writing) and reproducing (reading).
[0024]
First, with reference to FIG. 1, the basic structure of the optical disk of the present embodiment will be described. FIG. 1 shows a schematic plan view of the structure of an optical disc having a plurality of areas on the upper side, and shows a conceptual diagram of the area structure in the radial direction on the lower side.
[0025]
As shown in FIG. 1, the optical disc 100 can be recorded by various recording methods such as a magneto-optical method and a phase change method, which can be recorded (written) a plurality of times or only once. A lead-in area 104, a data area 106, and a lead-out area 108 are provided on the recording surface of the disk main body having a diameter of about 12 cm from the inner periphery to the outer periphery with the center hole 102 as the center. In each area, for example, a groove track and a land track are alternately provided spirally or concentrically around the center hole 102, and the groove track may be wobbling, one of these Alternatively, prepits may be formed on both tracks. The present invention is not particularly limited to an optical disc having such three areas.
[0026]
Next, the structure of the transport stream (TS) and program stream (PS) recorded on the optical disc of this embodiment will be described with reference to FIG. Here, FIG. 2 (a) schematically shows the structure of the MPEG2 program stream in the conventional DVD for comparison, and FIG. 2 (b) shows the structure of the MPEG2 transport stream (TS). Is shown schematically. Further, FIG. 2 (c) schematically shows the structure of an MPEG2 program stream in the present invention.
[0027]
In FIG. 2 (a), one program stream recorded on a conventional DVD includes only one video stream for video data as main video information along the time axis t, and audio data as audio information. 8 audio streams at maximum and 32 sub-picture streams for sub-picture data as sub-picture information. That is, the video data multiplexed at an arbitrary time tx relates to only one video stream. For example, a plurality of video streams corresponding to a plurality of television programs or movies are simultaneously converted into a program stream. Cannot be included. In order to multiplex and transmit or record a television program with video, at least one video stream is required for each television program, etc., so a DVD program in which only one video stream exists In the stream format, a plurality of television programs cannot be multiplexed and transmitted or recorded.
[0028]
In FIG. 2B, one transport stream (TS) recorded on the optical disc 100 of the present invention comprises a plurality of video streams as elementary streams (ES) for video data as main video information, Further, a plurality of audio streams are included as an elementary stream (ES) for audio data as audio information, and a plurality of sub-picture streams are included as an elementary stream (ES) for sub-picture data as sub-picture information. That is, the video data multiplexed at an arbitrary time tx relates to a plurality of video streams. For example, a plurality of video streams corresponding to a plurality of television programs or a plurality of movies are included in the transport stream at the same time. Is possible. Thus, in the transport stream format in which a plurality of video streams exist, a plurality of television programs and the like can be multiplexed and transmitted or recorded. However, in the digital broadcasting employing the current transport stream, the sub-picture stream is not transmitted.
[0029]
In FIG. 2C, one program stream (PS) recorded on the optical disc 100 of the present invention includes a plurality of video streams for video data as main video information, and further for audio data as audio information. It includes a plurality of audio streams and a plurality of sub-picture streams for sub-picture data that is sub-picture information. That is, video data multiplexed at an arbitrary time tx relates to a plurality of video streams. For example, a plurality of video streams corresponding to a plurality of television programs or a plurality of movies are included in the program stream at the same time. It is possible.
[0030]
2A to 2C, the video stream, the audio stream, and the sub-picture stream are arranged in this order from the top for convenience of explanation, but this order is multiplexed in packet units as will be described later. It does not correspond to the order in which they are converted. In the transport stream, conceptually, for example, a group of one video stream, two audio streams, and two sub-picture streams corresponds to one program.
[0031]
The above-described optical disc 100 of the present embodiment is configured such that a transport stream (TS) as shown in FIG. 2B can be multiplexed and recorded, that is, a plurality of programs or programs can be recorded simultaneously within the limitation of the recording rate. Has been. Further, in addition to or instead of such a transport stream, the program stream (PS) as shown in FIG. 2C can be multiplexed and recorded on the same optical disc 100.
[0032]
Next, the structure of data recorded on the optical disc 100 will be described with reference to FIGS. FIG. 3 schematically shows a data structure recorded on the optical disc 100. As shown in FIG. FIG. 4 schematically shows details of the data structure in each title shown in FIG. 5 and 6 schematically show details of the data structure in each play (P) list set shown in FIG. FIG. 7 schematically shows details of the data structure of each item shown in FIG. FIG. 8 schematically shows a logical configuration of data in each title element shown in FIG. 4, and FIG. 9 shows a case where each playlist set consists of one playlist. 2 schematically shows a logical configuration of data in each title element. FIG. 10 schematically shows details of the data structure in each object shown in FIG.
[0033]
In the following description, a “title” is a playback unit for continuously executing a plurality of “playlists”, and is a unit having a logically large unit such as one movie or one television program. is there. A “playlist set” is a bundle of “playlists”. For example, a bundle of playlists for reproducing a plurality of pieces of content information having specific relations that can be switched to each other in angle reproduction or parental reproduction, or contents relating to a plurality of programs broadcast and recorded together in the same time zone It is a bundle of playlists for reproducing information. Or for the same title, depending on the video playback function (video performance) and audio playback function (audio performance) required in the information playback system, such as high-definition support, display resolution, surround speaker support, speaker arrangement, etc. It is a bundle of playlists for reproducing various content information prepared for each function. A “playlist” is a file that stores information necessary for playback of an “object”, and is composed of a plurality of “items” each storing information related to the playback range of the object for accessing the object. . The “object” is entity information of the content constituting the above-described MPEG2 transport stream.
[0034]
In FIG. 3, the optical disc 100 has four types of files, a disc information file 110, a play (P) list information file 120, an object information file 130, and an object data file 140, as logical structures. A file system 105 for management is further provided. 3 does not directly show the physical data arrangement on the optical disc 100, but the arrangement order shown in FIG. 3 is recorded so as to correspond to the arrangement order shown in FIG. It is also possible to record the file system 105 and the like in the data recording area 106 subsequent to the lead-in area 104 and further record the object data file 140 and the like in the data recording area 106. Even if the lead-in area 104 and the lead-out area 108 shown in FIG. 1 do not exist, the file structure shown in FIG. 3 can be constructed.
[0035]
The disc information file 110 is a file that stores comprehensive information about the entire optical disc 100, and stores disc comprehensive information 112, a title information table 114, and other information 118. The disc comprehensive information 112 stores the total number of titles in the optical disc 100, for example. The title information table 114 is configured to include a title pointer 114-1 and a plurality of titles 200 (titles # 1 to #m) whose identification numbers or recording addresses are indicated thereby. Each title 200 stores, as logical information, the type of each title (for example, sequential playback type, branch type, etc.) and the play (P) list number constituting each title for each title.
[0036]
As shown in FIG. 4, each title 200 includes, for example, title general information 200-1, a plurality of title elements 200-2, and other information 200-5. Further, each title element 200-2 includes a pre-command 200PR, a playlist set pointer 200PT, a post command 200PS, and other information 200-6.
[0037]
Here, the pointer 200PT as an example of the first pointer information according to the present invention is stored in the playlist information file 120 corresponding to the content information to be reproduced based on the title element 200-2 including the pointer 200PT. The identification number of the playlist set 126S is shown. The pointer 200PT may be information indicating the recording position of the playlist set 126S corresponding to the content information to be reproduced based on the title element 200-2. The pre-command 200PR, which is an example of the first pre-command according to the present invention, indicates a command to be executed before reproduction of content information whose reproduction sequence is defined by one playlist set 126S specified by the pointer 200PT. The post command 200PS, which is an example of the first post command according to the present invention, indicates a command to be executed after the reproduction of the content information whose reproduction sequence is defined by the one playlist set. The other information 200-5 included in the title element 200-2 includes, for example, next information that designates a title element related to playback next to playback related to the title element.
[0038]
Therefore, when reproducing the information recording medium by the information reproducing apparatus described later, the playlist set 126S is accessed according to the pointer 200PT, and the one corresponding to a desired program or the like is selected from the plurality of playlists 126 included therein. If the control is executed as described above, the desired content information can be reproduced as the title element 200-2. Further, one title 200 can be reproduced by reproducing one or more such title elements 200-2. Furthermore, in accordance with the pre-command 200PR, it is possible to execute a command to be executed before reproduction of content information whose reproduction sequence is defined by one playlist set 126S specified by the pointer 200PT. Furthermore, in accordance with the post command 200PS, a command to be executed after reproduction of the content information whose reproduction sequence is defined by one playlist set 126S specified by the pointer 200PT can be executed. The post command 200PS is, for example, a command for instructing branching of content information, a command for selecting the next title, or the like. In addition, the title element 200-2 next to the title element 200-2 being reproduced can be reproduced in accordance with the next information included in the other information 200-5.
[0039]
Referring back to FIG. 3, the playlist information file 120 stores a play (P) list set information table 121 indicating the logical structure of each playlist, which includes play (P) list set general information 122 and play ( P) list set pointer 124, a plurality of play (P) list sets 126S (P list sets # 1 to #n), and other information 128. The playlist set information table 121 stores logical information of each playlist set 126S in the order of playlist set numbers. In other words, the storage order of each playlist set 126S is the playlist set number. Further, it is also possible to refer to the same playlist set 126 </ b> S from a plurality of titles 200 in the title information table 114 described above. That is, even when the title #q and the title #r use the same playlist set #p, the playlist information #p in the playlist set information table 121 is pointed to the title information table 114. May be.
[0040]
As shown in FIG. 5, the playlist set 126S includes playlist set general information 126-1, a plurality of playlists 126 (playlists # 1 to #x), an item definition table 126-3, and other information. 126-4. Each playlist 126 includes a plurality of playlist elements 126-2 (playlist elements # 1 to #y) and other information 126-5. Each playlist element 126-2 includes a pre-command 126PR, an item pointer 126PT, a post command 126PS, and other information 126-6.
[0041]
Here, the pointer 126PT as an example of the second pointer information according to the present invention is defined by the item definition table 126-3 corresponding to the content information to be reproduced based on the playlist element 126-2 including the pointer 126PT. Indicates the identification number of the item to be played. The pointer 126PT may be an item recording position defined by the item definition table 126-3.
[0042]
As illustrated in FIG. 6, in the playlist set 126S, a plurality of items 204 are defined in the item definition table 126-3. These are shared by a plurality of playlists 126. Also, as the playlist set general information 126-1, a UI (user interface information) such as the name and playback time of each playlist 126 included in the playlist set 126S, and address information to each item definition table 126-3. Etc. are described.
[0043]
In FIG. 5 again, a pre-command 126PR as an example of the second pre-command according to the present invention indicates a command to be executed before reproduction of one item 204 designated by the pointer 126PT. The post command 126PS as an example of the second post command according to the present invention indicates a command to be executed after the reproduction of the one item 204. The other information 126-6 included in the playlist element 126-2 includes, for example, first information that designates the playlist element 126-2 related to the playback next to the playback related to the playlist element 126-2.
[0044]
As illustrated in FIG. 7, the item 204 is a minimum unit of display. In the item 204, “IN point information” indicating the start address of the object and “OUT point information” indicating the end address are described. Each of these “IN point information” and “OUT point information” may directly indicate an address, or may indirectly indicate an address such as time or time on the reproduction time axis. In the figure, when a plurality of ESs (elementary streams) are multiplexed for the object indicated by “stream object #m”, the designation of the item 204 is a combination of specific ESs or specific ESs. Will be specified.
[0045]
As illustrated in FIG. 7, the item 204 is a minimum unit of display. There are two types of items 204: an item 204 for reproducing a TS object and a still image object item 204ST for reproducing a still image object.
[0046]
As illustrated in FIG. 8, the title element 200-2 logically includes the pre-command 200PR or 126PR, the playlist set 126S selected by the pointer 200PT, the post-command 200PS or post-command 126PS, and the next information 200. -6N. Therefore, processing for selecting the playlist 126 from the playlist set 126S is executed according to some conditions that can be reproduced by the system, such as video resolution.
[0047]
However, as illustrated in FIG. 9, when the playlist set designated by the pointer 200PT is composed of a single playlist, that is, the playlist set 126S shown in FIG. In this case, the title element 200-2 is logically composed of a pre-command 200PR or 126PR, a playlist 126 that is played back during playback, a post-command 200PS or post-command 126PS, and next information 200-6N. May be. In this case, if a playlist set is designated for playback regardless of conditions that can be played back by the system, playback processing of a single playlist 126 is executed.
[0048]
In FIG. 3 again, the object information file 130 is stored in the object data file 140 for each item configured in each playlist 126 (that is, a logical address to be reproduced) and various attribute information relating to the reproduction of the item. Is stored. Particularly in the present embodiment, the object information file 130 includes an AU table 131 including a plurality of AU (associate unit) information 132I (AU # 1 to AU # q), which will be described in detail later, and an ES (elementary stream) map. A table 134 and other information 138 are stored.
[0049]
The object data file 140 stores a plurality of TS objects 142 (TS # 1 object to TS # s object) for each transport stream (TS) and still image object 142ST, that is, actual data of content to be actually reproduced.
[0050]
Note that the four types of files described with reference to FIG. 3 can be further divided into a plurality of files and stored, and all of these may be managed by the file system 105. For example, the object data file 140 can be divided into a plurality of object data files # 1, object data files # 2,.
[0051]
As shown in FIG. 10, the TS object 142 shown in FIG. 3, which is a logically reproducible unit, is divided into a plurality of aligned units 143 each having a data amount of 6 kB, for example. The head of the aligned unit 143 is aligned with the head of the TS object 142 (aligned). Each aligned unit 143 is further subdivided into a plurality of source packets 144 each having a data amount of 192B. The source packet 144 is a physically reproducible unit. In this unit, that is, a packet unit, at least video data, audio data, and sub-picture data among the data on the optical disc 100 are multiplexed. May be multiplexed as well. Each source packet 144 has a data amount of 4B, control information 145 for controlling reproduction of a packet arrival time stamp indicating a reproduction processing start time of a TS (transport stream) packet on the reproduction time axis, and 188B TS packet 146 having a data amount of The TS packet 146 includes a packet header 146a and a TS packet payload 146b. In the TS packet payload, video data is packetized to be a “video packet”, or audio data is packetized to an “audio packet”. Or sub-picture data is packetized to form a “sub-picture packet”, or other data is packetized.
[0052]
Next, referring to FIGS. 11 and 12, video data, audio data, sub-picture data, etc. in the transport stream format as shown in FIG. 2B are transferred to the optical disc 100 by the TS packet 146 shown in FIG. The point that multiple recording is performed will be described. Here, in FIG. 11, the elementary stream (ES) for the upper program # 1 (PG1) and the elementary stream (ES) for the middle program # 2 (PG2) are multiplexed. FIG. 12 conceptually shows a state in which a transport stream (TS) for a program (PG1 & 2) is configured, with the horizontal axis as a time axis. FIG. 12 shows a multiplexed stream in one transport stream (TS). 3 conceptually shows an image of a TS packet as a packet arrangement along the time.
[0053]
As shown in FIG. 11, the elementary stream for program # 1 (upper stage) includes, for example, TS packets 146 obtained by packetizing video data for program # 1 discretely with respect to the time axis (horizontal axis). Arranged. The elementary stream (middle stage) for program # 2 is formed by discretely arranging TS packets 146 in which video data for program # 2 is packetized with respect to the time axis (horizontal axis). These TS packets 146 are multiplexed to construct a transport stream (lower stage) for these two programs. Although omitted in FIG. 11 for convenience of explanation, as shown in FIG. 2 (b), actually, it is composed of TS packets in which audio data is packetized as an elementary stream for program # 1. A sub-picture stream consisting of TS packets in which elementary streams and sub-picture data are packetized may be similarly multiplexed. In addition, audio data is packetized as an elementary stream for program # 2. An elementary stream made up of the TS packets and a sub-picture stream made up of TS packets in which the sub-picture data is packetized may be similarly multiplexed.
[0054]
As shown in FIG. 12, in this embodiment, one TS stream is constructed from a number of TS packets 146 multiplexed in this way. A large number of TS packets 146 are multiplexed and recorded on the optical disc 100 by adding information such as packet arrival time stamps 145 in such a multiplexed form. In FIG. 12, j (j = 1, 2,...) For each TS stream 146 composed of data constituting program #i (i = 1, 2, 3) is classified by the stream constituting the program. Is indicated by “Element (i0j)”, and (i0j) is a packet ID which is an identification number of the TS packet 146 for each elementary stream. This packet ID is given a unique value among the plurality of TS packets 146 multiplexed at the same time so that they can be distinguished from each other even if the plurality of TS packets 146 are multiplexed at the same time.
[0055]
In FIG. 12, PAT (program association table) and PMT (program map table) are also packetized and multiplexed in units of TS packets 146. Among these, the PAT stores a table indicating packet IDs of a plurality of PMTs. In particular, the MPEG2 standard defines that PAT is given (000) as a predetermined packet ID as shown in FIG. That is, the TS packet 146 in which the PAT is packetized is detected as the TS packet 146 whose packet ID is (000) among many packets multiplexed at the same time. The PMT stores a table indicating packet IDs for each elementary stream constituting each program for one or a plurality of programs. Arbitrary packet IDs can be assigned to the PMT, and these packet IDs are indicated by PATs that can be detected with the packet ID (000) as described above. Therefore, among many packets multiplexed at the same time, the TS packet 146 in which the PMT is packetized (that is, the TS packet 146 to which the packet IDs (100), (200), and (300) are assigned in FIG. 12). ) Is detected by PAT.
[0056]
When the transport stream as shown in FIG. 12 is digitally transmitted, the tuner refers to the PAT and PMT configured in this manner, thereby converting the multiplexed packet into a desired elementary stream. The corresponding one can be extracted and demodulated.
[0057]
In the present embodiment, such a PAT or PMT packet is included as the TS packet 146 stored in the TS object 142 shown in FIG. That is, there is a great advantage that when the transport stream as shown in FIG. 12 is transmitted, it can be recorded on the optical disc 100 as it is.
[0058]
Further, in the present embodiment, the PAT and PMT recorded in this way are not referred to when the optical disc 100 is reproduced, but instead refer to the AU table 131 and the ES map table 134 described in detail later with reference to FIG. As a result, more efficient reproduction is possible, and it is possible to cope with complicated multi-vision reproduction. For this reason, in this embodiment, for example, the correspondence between the elementary stream and the packet obtained by referring to the PAT and PMT at the time of demodulation or recording is expressed in the form of the AU table 131 and the ES map table 134 and packetized or It is stored in the object information file 130 without being multiplexed.
[0059]
Next, a logical configuration of data on the optical disc 100 will be described with reference to FIG. FIG. 13 schematically shows the logical configuration of data on the optical disc 100, focusing on the development from the logical hierarchy to the object hierarchy or the entity hierarchy.
[0060]
In FIG. 13, on the optical disc 100, for example, one or a plurality of logical titles 200 such as one movie and one television program are recorded. Each title 200 includes one or more title elements 200-2. Each title element 200-2 is logically composed of a plurality of playlist sets 126S. Within each title element 200-2, the plurality of playlist sets 126S may have a sequential structure or a branch structure.
[0061]
In the case of a simple logical configuration, one title element 200 is composed of one playlist set 126S, and one playlist set 126S is composed of one playlist 126. It is also possible to refer to one playlist set 126S from a plurality of title elements 200-2 or a plurality of titles 200.
[0062]
Each playlist 126 is logically composed of a plurality of items (play items) 204. Within each playlist 126, the plurality of items 204 may have a sequential structure or a branch structure. It is also possible to refer to one item 204 from a plurality of play lists 126. The playback range of the TS object 142 is logically specified by the above-described IN point information and OUT point information described in the item 204. Then, by referring to the object information 130d for the logically designated reproduction range, finally, the reproduction range of the TS object 142 is physically designated via the file system. Here, the object information 130d includes various information for reproducing the TS object 142 such as attribute information of the TS object 142 and ES address information 134d necessary for data search in the TS object 142 (shown in FIG. 3). The ES map table 134 includes a plurality of such ES address information 134d).
[0063]
When the TS object 142 is reproduced by the information recording / reproducing apparatus described later, the physical address to be reproduced in the TS object 142 is acquired from the item 204 and the object information 130d, and the desired elementary stream is reproduced. The Also, when reproducing the still image object 142ST, the physical address to be reproduced in the still image object 142ST is acquired from the still image object item 204ST and the object information 130d, and a desired still image is reproduced. .
[0064]
As described above, in this embodiment, the IN point information and OUT point information described in the item 204, and the ES address information 134d described in the ES map table 134 (see FIG. 3) of the object information 130d, the logic in the reproduction sequence is obtained. The association from the hierarchy to the object hierarchy is executed, and the elementary stream can be reproduced.
[0065]
As described above in detail, in the present embodiment, the multiplex recording is performed in units of TS packets 146 on the optical disc 100, thereby including a large number of elementary streams as shown in FIG. The transport stream can be multiplexed and recorded on the optical disc 100. According to the present embodiment, when a digital broadcast is recorded on the optical disc 100, a plurality of programs or a plurality of programs can be recorded simultaneously within the limit of the recording rate. A method of multiplexing and recording a plurality of programs is adopted. An embodiment of an information recording / reproducing apparatus capable of executing such a recording process will be described below.
[0066]
[Information recording / playback device]
Next, an embodiment of the information recording / reproducing apparatus of the present invention will be described with reference to FIGS. FIG. 14 is a block diagram of the information recording / reproducing apparatus, and FIGS. 15 to 19 are flowcharts showing the operation.
[0067]
In FIG. 14, an information recording / reproducing apparatus 500 is roughly divided into a reproduction system and a recording system, and is configured to be able to record information on the optical disc 100 described above and to reproduce information recorded on the information. . In this embodiment, the information recording / reproducing apparatus 500 is used for recording / reproducing as described above, but basically, the embodiment of the recording apparatus of the present invention can be configured from the recording system portion. The embodiment of the information reproducing apparatus of the present invention can be configured from the reproducing system portion.
[0068]
The information recording / reproducing apparatus 500 includes an optical pickup 502, a servo unit 503, a spindle motor 504, a demodulator 506, a demultiplexer 508, a video decoder 511, an audio decoder 512, a sub picture decoder 513, a still picture decoding unit 517, an adder 514, The system controller 520 includes a memory 530, a memory 540, a modulator 606, a formatter 608, a TS object generator 610, a video encoder 611, an audio encoder 612, and a sub-picture encoder 613. The system controller 520 includes a file system / logical structure data generator 521 and a file system / logical structure data reader 522. Further, the system controller 520 is connected to a memory 530 and a user interface 720 for performing user input such as title information.
[0069]
Among these components, a demodulator 506, a demultiplexer 508, a video decoder 511, an audio decoder 512, a sub-picture decoder 513, a still picture decoding unit 517, an adder 514, and a memory 540 generally constitute a playback system. . On the other hand, among these components, a modulator 606, a formatter 608, a TS object generator 610, a video encoder 611, an audio encoder 612, and a sub-picture encoder 613 generally constitute a recording system. The optical pickup 502, the servo unit 503, the spindle motor 504, the system controller 520 and the memory 530, and the user interface 720 for performing user input such as title information are generally shared by both the reproduction system and the recording system. Further, for the recording system, a TS object data source 700, a video data source 711, an audio data source 712, and a sub-picture data source 713 are prepared. Further, the file system / logical structure data generator 521 provided in the system controller 520 is mainly used in the recording system, and the file system / logical structure reader 522 is mainly used in the reproduction system.
[0070]
The optical pickup 502 irradiates the optical disc 100 with a light beam LB such as a laser beam at a first power as reading light during reproduction, and irradiates the recording light as a writing light with a second power while being modulated. The servo unit 503 receives control by the control signal Sc1 output from the system controller 520 during reproduction and recording, and performs focus servo, tracking servo, etc. in the optical pickup 502 and spindle servo in the spindle motor 504. The spindle motor 504 is configured to rotate the optical disc 100 at a predetermined speed while receiving spindle servo from the servo unit 503.
[0071]
(I) Configuration and operation of recording system:
Next, with reference to FIG. 14 to FIG. 18, the specific configuration and operation of each component constituting the recording system in the information recording / reproducing apparatus 500 will be described for each case.
[0072]
(I-1) When using a created TS object or still image object:
This case will be described with reference to FIGS.
[0073]
In FIG. 14, a TS object data source 700 includes a recording storage such as a video tape and a memory, and stores TS or still image object data D1.
[0074]
In FIG. 15, first, information of each title logically configured on the optical disc 100 using the TS object data D1 (for example, the configuration content of the playlist) is input from the user interface 720 as user information I2 such as title information. Is input to the system controller 520. Then, the system controller 520 takes in the user input I2 such as title information from the user interface 720 (step S21: Yes and step S22). At this time, in the user interface 720, under the control of the control signal Sc4 from the system controller 520, for example, selection through the title menu screen, input processing corresponding to the content to be recorded is possible. If the user input has already been executed (step S21: No), these processes are omitted.
[0075]
Next, the TS object data source 700 outputs TS object data D1 under the control of the control signal Sc8 instructing data reading from the system controller 520. Then, the system controller 520 takes in the TS object data D1 from the TS object source 700 (step S23), and packetizes it with the video data, for example, as described above by the TS analysis function in the file system / logical structure data generator 521. Based on the PAT, PMT, etc., the data array (for example, recording data length) in the TS object data D1, analysis of the configuration of each elementary stream (for example, ES_PID (elementary stream packet identification number) described later) Understand) (step S24).
[0076]
Subsequently, the system controller 520 uses the file system / logical structure data generator 521 to analyze the logical information from the user input I2 such as the captured title information, the data array of the TS object data D1, and the analysis result of each elementary stream. As the file data D4, a disc information file 110, a playlist information file 120, an object information file 130, and a file system 105 (see FIG. 3) are created (step S25). The memory 530 is used when creating such logical information file data D4.
[0077]
Various variations such as preparing data on the data array of the TS object data D1 and the configuration information of each elementary stream in advance are naturally conceivable, but these are also within the scope of the present embodiment.
[0078]
In FIG. 14, a formatter 608 is a device that performs a data array format for storing both TS object data D1 and logical information file data D4 on the optical disc 100. More specifically, the formatter 608 includes a switch Sw1 and a switch Sw2, and is controlled by a switch control signal Sc5 from the system controller 520. When formatting the TS object data D1, the switch Sw1 is set to the (1) side. And the switch Sw2 is connected to the (1) side, and TS object data D1 from the TS object data source 700 is output. Note that transmission control of the TS object data D1 is performed by a control signal Sc8 from the system controller 520. On the other hand, when formatting the logical information file data D4, the formatter 608 is controlled by the switch control signal Sc5 from the system controller 520, connects the switch Sw2 to the (2) side, and outputs the logical information file data D4. It is configured as follows.
[0079]
In step S26 in FIG. 15, (i) the logical information file data D4 from the file system / logical structure data generator 521 in step S25 or (ii) the TS object data source by the switching control by the formatter 608 configured as described above. TS object data D1 from 700 is output via the formatter 608 (step S26).
[0080]
The selected output from the formatter 608 is sent to the modulator 606 as disc image data D5, modulated by the modulator 606, and recorded on the optical disc 100 via the optical pickup 502 (step S27). The disk recording control at this time is also executed by the system controller 520.
[0081]
If both the logical information file data D4 generated in step S25 and the TS object data D1 corresponding to the logical information file data D4 have not been recorded, the process returns to step S26 to continue recording (step S28: No). . Note that the recording order of the logical information file data D4 and the TS object data D1 corresponding thereto may be either first or second.
[0082]
On the other hand, if both of these have been recorded, it is determined whether or not the recording on the optical disc 100 should be terminated based on the presence or absence of an end command or the like (step S29). Returning to S21, the recording process is continued. On the other hand, if it should be terminated (step S29: Yes), the series of recording processes is terminated.
[0083]
As described above, the information recording / reproducing apparatus 500 performs the recording process when the created TS object or still image object is used.
[0084]
In the example shown in FIG. 15, after the logical information file data D4 is created in step S25, data output of the logical information file data D4 and the corresponding TS object data D1 is executed in step S26. Before step S25, the TS object data D1 is output and recorded onto the optical disc 100, and the logical information file data D4 can be generated or recorded after this recording or in parallel with this recording. is there.
[0085]
(I-2) When receiving and recording a transport stream being broadcast:
This case will be described with reference to FIGS. In FIG. 16, the same steps as those in FIG. 15 are denoted by the same step numbers, and description thereof will be omitted as appropriate.
[0086]
In this case as well, substantially the same processing as in the above-described “in the case of using a created TS object” is performed. Therefore, the following description will be focused on the differences.
[0087]
When receiving and recording a transport stream being broadcast, the TS object data source 700 includes, for example, a receiver (set top box) that receives a digital broadcast being broadcast, and receives TS object data D1. Then, it is sent to the formatter 608 in real time (step S41). At the same time, reception information D3 including program configuration information decoded at the time of reception and ES_PID information described later (that is, information corresponding to data sent via the interface between the receiver and the system controller 520) is sent to the system controller 520. The data is captured and stored in the memory 530 (step S44).
[0088]
On the other hand, the TS object data D1 output to the formatter 608 is output to the modulator 606 by the switching control of the formatter 608 (step S42) and recorded on the optical disc 100 (step S43).
[0089]
In parallel with these, the file system / logical structure generator 521 creates the logical information file data D4 using the program configuration information and ES_PID information included in the reception information D3 captured at the time of reception and stored in the memory 530. (Step S24 and Step S25). After the series of TS object data D1 is recorded, the logical information file data D4 is additionally recorded on the optical disc 100 (steps S46 and S47). In addition, you may perform these processes of step S24 and S25 after completion | finish of step S43.
[0090]
Further, as necessary (for example, when editing a part of a title), user input I2 such as title information from the user interface 720 is added to the program configuration information and ES_PID information stored in the memory 530. The logical information file data D4 may be created by the system controller 520 and additionally recorded on the optical disc 100.
[0091]
As described above, the information recording / reproducing apparatus 500 performs the recording process when the transport stream being broadcast is received and recorded in real time.
[0092]
If all received data at the time of broadcasting is temporarily stored in the archive device and then used as the TS object source 700, the same processing as in the above-described case of using a created TS object is sufficient.
[0093]
(I-3) When recording video, audio and sub-picture data:
This case will be described with reference to FIGS. In FIG. 17, the same steps as those in FIG. 15 are denoted by the same step numbers, and description thereof will be omitted as appropriate.
[0094]
When recording video data, audio data, and sub-picture data prepared separately in advance, the video data source 711, the audio data source 712, and the sub-picture data source 713 are each composed of a recording storage such as a video tape or a memory. , Video data DV, audio data DA, and sub-picture data DS are stored.
[0095]
These data sources are controlled by a control signal Sc8 instructing data reading from the system controller 520, and receive video data DV, audio data DA, and sub-picture data DS, respectively, a video encoder 611, an audio encoder 612, and a sub-picture data DS. The image is sent to the picture encoder 613 (step S61). The video encoder 611, the audio encoder 612, and the sub-picture encoder 613 execute a predetermined type of encoding process (step S62).
[0096]
Under the control of the control signal Sc6 from the system controller 520, the TS object generator 610 converts the encoded data into TS object data forming a transport stream (step S63). At this time, data arrangement information (for example, recording data length) of each TS object data and configuration information (for example, ES_PID described later) of each elementary stream are sent from the TS object generator 610 to the system controller 520 as information I6. And stored in the memory 530 (step S66).
[0097]
On the other hand, the TS object data generated by the TS object generator 610 is sent to the {circle around (2)} side of the switch Sw <b> 1 of the formatter 608. That is, when the TS object data from the TS object generator 610 is formatted, the formatter 608 is controlled to be switched by the switch control signal Sc5 from the system controller 520 so that the switch Sw1 is set to the (2) side and the switch Sw2 is set to (1). By connecting to the side, the TS object data is output (step S64). Subsequently, this TS object data is recorded in the optical disc 100 via the modulator 606 (step S65).
[0098]
In parallel with these, the file system / logical structure generator 521 converts the logical information file data D4 by using the data arrangement information of each TS object data fetched into the memory 530 as information I6 and the configuration information of each elementary stream. Create (step S24 and step S25). After the series of TS object data D2 is recorded, it is additionally recorded on the optical disc 100 (steps S67 and S68). Note that the processing in steps S24 and S25 may also be performed after the end of step S65.
[0099]
Further, as necessary (for example, when editing a part of the title), the user input I2 such as title information from the user interface 720 is added to the information stored in the memory 530, thereby the file system. The logical information file data D4 may be created by the logical structure generator 521 and additionally recorded on the optical disc 100.
[0100]
As described above, the information recording / reproducing apparatus 500 performs the recording process when recording video data, audio data, and sub-picture data separately prepared in advance.
[0101]
This recording process can also be applied when recording arbitrary content owned by the user.
[0102]
(I-4) When recording data by authoring:
This case will be described with reference to FIGS. In FIG. 18, the same steps as those in FIG. 15 are denoted by the same step numbers, and description thereof will be omitted as appropriate.
[0103]
In this case, by combining the recording processes in the three cases described above, the authoring system previously generates the TS object, the logical information file data, and the like (step S81), and then performs the switching control performed by the formatter 608. The process up to the process is terminated (step S82). After that, the information obtained by this work is sent as disk image data D5 to the modulator 606 installed before and after the disk master cutting machine (step S83), and the master is created by this cutting machine (step S84).
[0104]
In the present embodiment, in particular, in the configuration and operation of the recording system described above (i), recording from the start to the stop of recording is logically recorded as one title 200, and a plurality of pieces of play are performed on these pieces of content information. A plurality of playlist sets 126S each including the list 126 are recorded. Moreover, each TS object in the object data file 120 is recorded in units of “switch units” for performing angle switching during reproduction, as will be described in detail later. Therefore, as will be described below, during reproduction of the information recording medium, control for selecting a playlist corresponding to a desired program, a desired angle block, etc. from among a plurality of playlists 126 included in each playlist set 126S. By executing this, it is possible to reproduce the desired content information as a title. In addition, during such reproduction, the angle can be seamlessly switched at each boundary of the switch unit in accordance with the input of the angle switching instruction.
[0105]
In the present embodiment, in particular, in the configuration and operation of the recording system described above (i), for example, for DVD-ROM use (ie (i-4) etc.), a plurality of parental blocks, angle blocks, etc. Content information forming a plurality of blocks is recorded as a transport stream or the like. Further, for example, in the case of a DVD recorder application (that is, in the case of (i-2) or the like), content information forming a plurality of programs streamed into the same transmission wave or the same transmission signal is recorded as a transport stream or the like. Or, for the same title, depending on the video playback function (video performance) required on the information playback system side, such as content information for high-definition video and content for normal video, content information for surround speakers, and content information for monaural Various content information prepared for each requested function, such as for each audio playback function (audio performance), is recorded as a transport stream or the like. In such a recording, a plurality of playlist sets each including a plurality of playlists 126 for the plurality of pieces of content information are recorded logically from the start to the stop of recording as one title 200. 126S is recorded. Therefore, as described below, when reproducing the information recording medium, it corresponds to a desired program, a desired parental block, a desired angle block, etc. among a plurality of playlists 126 included in each playlist set 126S. By executing control for selecting what to do, the desired content information can be reproduced as a title.
[0106]
(Ii) Configuration and operation of playback system:
Next, with reference to FIG. 14 and FIG. 19, a specific configuration and operation of each component constituting the playback system in the information recording / playback apparatus 500 will be described.
[0107]
In FIG. 14, a user interface 720 inputs a title to be reproduced from the optical disc 100, a reproduction condition thereof, and the like as user input I2 such as title information to the system controller. At this time, in the user interface 720, under the control of the control signal Sc4 from the system controller 520, input processing corresponding to the content to be reproduced, such as selection via a title menu screen, is possible.
[0108]
In response to this, the system controller 520 performs disc reproduction control on the optical disc 100, and the optical pickup 502 sends a read signal S 7 to the demodulator 506.
[0109]
The demodulator 506 demodulates the recording signal recorded on the optical disc 100 from the read signal S7 and outputs it as demodulated data D8. Logical information file data (that is, the file system 105, the disk information file 110, the P list information file 120, and the object information file 130 shown in FIG. 3) included in the demodulated data D8 as an unmultiplexed information portion is stored. , Supplied to the system controller 520. Based on the logical information file data, the system controller 520 executes various reproduction controls such as a reproduction address determination process and control of the optical pickup 502.
[0110]
On the other hand, the demultiplexer 508 demultiplexes the TS object data as the multiplexed information portion included in the demodulated data D8 under the control of the control signal Sc2 from the system controller 520. Here, when the access to the reproduction position address is completed by the reproduction control of the system controller 520, the control signal Sc2 is transmitted so as to start demultiplexing.
[0111]
From the demultiplexer 508, a video packet, an audio packet, and a sub-picture packet are sent out and supplied to the video decoder 511, the audio decoder 512, and the sub-picture decoder 513, respectively. Then, the video data DV, the audio data DA, and the sub picture data DS are decoded.
[0112]
Note that the PAT or PMT packets included in the transport stream shown in FIG. 6 are included as part of the demodulated data D8, but are discarded by the demultiplexer 508.
[0113]
The adder 514 receives the control by the control signal Sc3 instructing mixing from the system controller 520, and the video data DV and the sub picture data DS decoded by the video decoder 511 and the sub picture decoder 513, respectively, at a predetermined timing. Mix or superimpose. The result is output as a video output from the information recording / reproducing apparatus 500 to, for example, a television monitor.
[0114]
On the other hand, the audio data DA decoded by the audio decoder 512 is output as an audio output from the information recording / reproducing apparatus 500 to, for example, an external speaker.
[0115]
The still image object output from the demodulator 506 is sent to the still image decoding unit 517, and the still image is decoded and reproduced. The reproduction of the still image object will be described later.
[0116]
Here, a specific example of the reproduction processing routine by the system controller 520 will be described with further reference to the flowchart of FIG.
[0117]
In FIG. 19, as an initial state, the recognition of the optical disc 100 by the reproduction system and the recognition of the volume structure and file structure by the file system 105 (see FIG. 3) have already been performed by the system controller 520 and the file system / logical structure reader 522 therein. It is assumed that it is finished at. Here, a processing flow after acquiring the total number of titles from the disc general information 112 in the disc information file 110 and selecting one title 200 among them will be described.
[0118]
First, the title 200 is selected by the user interface 720 (step S211). In response to this, the system controller 520 acquires information related to the reproduction sequence from the interpretation result of the file system / logical structure reader 522. In selecting the title 200, a desired one of the plurality of title elements 200-2 (see FIG. 4) constituting the title 200 may be selected by an external input operation using a remote controller or the like by the user. Then, one title element 200-2 may be automatically selected according to a system parameter or the like set in the information recording / reproducing apparatus 500.
[0119]
Next, the contents of a plurality of playlists 126 constituting the playlist set 126S corresponding to the selected title 200 (title element 200-2) are acquired. Here, as the processing of the logical hierarchy, acquisition of the structure of each playlist 126 and information (see FIGS. 5, 6 and 13) of each item 204 constituting the playlist 126 is performed (step S212).
[0120]
Next, the content of the playlist 126 to be reproduced is acquired from the plurality of playlists 126 acquired in step S212. Here, for example, playback is first started from the playlist # 1, and the content of the playlist 126 corresponding to this is acquired (step S213). The contents of the playlist 126 are one or a plurality of playlist elements 126-2 (see FIG. 5) and the like. In the acquisition process of step S213, the playlist elements 126-2 and the like are acquired.
[0121]
Subsequently, the pre-command 126PR (see FIG. 5) included in the playlist 126 is executed (step S214). It should be noted that it is possible to select one of a plurality of playlists 126 having a certain relationship constituting the playlist set 126S by the pre-command 126PR. If the playlist element 126-2 constituting the playlist 126 does not have the pre-command 126PR, this process is omitted.
[0122]
Next, the TS object 142 (see FIGS. 3 and 10) to be reproduced is determined based on the item 204 (see FIGS. 5 to 7) specified by the playlist 126 acquired in step S213 (step S215). ). More specifically, the acquisition of the object information file 130 (see FIG. 3) related to the TS object 142 to be reproduced is executed based on the item 204, and the stream number, address, etc. of the TS object 142 to be reproduced are specified. To do.
[0123]
In this embodiment, AU (Associate Unit) information 132I and PU (Presentation Unit) information 302I described later are also acquired as information stored in the object information file 130. With the acquired information, the above-described association from the logical hierarchy to the object hierarchy (see FIG. 13) is performed.
[0124]
Next, the reproduction of the TS object 142 determined in step S215 is actually started. That is, the object hierarchy process is started based on the logical hierarchy process (step S216).
[0125]
During the reproduction process of the TS object 142, it is determined whether or not the next item 204 constituting the playlist 126 to be reproduced exists (step S217). Then, as long as the next item 204 exists (step S217: Yes), the process returns to step S215, and the above-described determination and reproduction processing of the TS object 142 are repeated.
[0126]
On the other hand, if it is determined in step S217 that the next item 204 does not exist (step S217: No), a post command 126PS (see FIG. 5) corresponding to the playlist 126 being executed is executed (step S218). If the playlist element 126-2 constituting the playlist 126 does not have the post command 126PS, this process is omitted.
[0127]
Thereafter, it is determined whether or not there is a next playlist 126 constituting the selected title 200 (step S219). If it exists here (step S219: Yes), it will return to step S213 and the process after acquisition of the play list 126 to be reproduced will be repeatedly executed.
[0128]
On the other hand, if it is determined in step S219 that the next playlist 126 does not exist (step S219: No), that is, the reproduction of all the playlists 126 to be reproduced in accordance with the selection of the title 200 in step S211 has been completed. In this case, the series of reproduction processing is finished.
[0129]
As described above, the reproducing process of the optical disc 100 is performed by the information recording / reproducing apparatus 500 of the present embodiment.
[0130]
In the present embodiment, in particular, a plurality of playlists included in each playlist set 126S specified by the title 200 in the processing of the logical hierarchy in steps S211 to S214 in FIG. 19 and the processing of associating the logical hierarchy with the object hierarchy in S215. One of 126 is selected as will be described in detail later, and the content information is reproduced in a reproduction sequence defined thereby. For example, for DVD recorder use or DVD-ROM, among a plurality of playlist information included in each playlist set 126S recorded as one title, a desired program, a desired parental block, a desired angle block, Select the one that corresponds to the desired content information, such as a version that is functionally reproducible by each information reproduction system or a version that efficiently or maximizes the function of each information reproduction system. As a result, the desired content information can be reproduced as the title 200.
[0131]
[Playlist selection method in playlist set]
In the present embodiment, a playlist 126 corresponding to desired content information is appropriately selected from the playlist set 126S included in the reproduced playlist information file 120.
[0132]
For such playlist selection, for example, the pre-command 200RP (see FIG. 4) included in the title element 200-2 includes a playlist selection command group list in which selection conditions are described for each playlist 126. , May be performed according to this selection condition. Attribute information added to each playlist 126 stored in the playlist set 126S (for example, video resolution for video functions, progressive / interleaving, video codec, number of audio channels, audio codec, etc. It may be performed according to information indicating attributes of content information). Alternatively, it may be performed according to playlist set control information that is included in the title element 200-2 and stores selection conditions for each playlist. By such selection, for example, a desired program, a desired parental block, a desired angle block, and the like corresponding to desired content information can be selected. Alternatively, for example, it is possible to select a playlist that can be played back by the information playback system and preferably makes the best use of the video playback function and audio playback function of the information playback system.
[0133]
[Still image playback]
Next, the reproduction of a still image will be described in detail.
[0134]
(Still image object)
FIG. 20 shows the data structure of a still image object. The still image object 142ST is included in the object data file 140 as shown in FIG. As shown in FIG. 20, the still image object 142ST includes an image number 142ST-1, a plurality of still image data 142ST-2, and other information 142ST-3. The number of images 142ST-1 indicates the number of still image data 142ST-2 included in the still image object 142ST, that is, the number of still images. Each still image data 142ST-2 can be, for example, data in JPEG format, but is not limited thereto.
[0135]
(Still image item)
Next, a still image item used when reproducing a still image will be described. The above-described still image object 142ST can be recorded on the optical disc 100 described so far. Then, at the time of reproduction, the still image object 142ST is reproduced according to a playlist composed of still image items. Accordingly, a plurality of still images can be reproduced by various reproduction (presentation) methods such as a slide show.
[0136]
Even in the case of a still image, the data structure relating to the playlist is basically the same as that described above. That is, as shown in FIG. 3, the playlist information file 120 includes a plurality of playlist sets 126S, and the playlist set 126S includes a plurality of playlists 126 as shown in FIG. Item 204 is included. As shown in FIG. 7, the item 204 can include a still image object item 204ST in addition to the stream object item 204.
[0137]
FIG. 21 shows a hierarchical structure of still image object items. In FIG. 21, a still image item 204ST includes an item type 710, a still image object play item 720, and other data 730.
[0138]
The item type 710 is information indicating whether the item is an item for a stream object, an item for a still image object, or another play item. Of course, the still image play item 402ST includes information indicating that it is a play item for a still image object as an item type 710. Therefore, in practice, it is identified with reference to the item type 710 whether a plurality of items on the optical disc 100 are items for a stream object or items for a still image object.
[0139]
When the item is for a still image, the play item 402ST includes a still image object play item 720. The still image object play item 720 basically includes various types of information indicating a method for reproducing a still image object. Specifically, as shown in FIG. 21, the image index number 721, the number of images 722, and the total number of still images. It includes a display time (duration time) 723, a still image X position 724, a still image Y position 725, a background color 726, a still effect 730, and other information 728.
[0140]
Each information will be described. First, the image index number 721 indicates the index number of a still image included in the corresponding still image object 142ST. The number of images 722 indicates the number of still images included in the item 402ST. The still image total display time 723 indicates a time width for reproducing (displaying) a still image. Note that this still image total display time is defined to include a start transition time and an end transition time, which will be described later.
[0141]
The still image X position 724 indicates the display position of the corresponding still image in the X-axis direction, and the still image Y position 725 indicates the display position of the corresponding still image in the Y-axis direction. The background color 726 indicates a color displayed on the background of the still image. As a display method of the still image object to be displayed, a plurality of still images can be sequentially switched and displayed as in a slide show, for example. In such a case, a monochrome background image is usually displayed during display switching between the previous still image and the next still image, but the background color indicates the color of the background image. For example, red, blue, green, or the like can be used as the background color.
[0142]
The still effect 730 is information relating to a still image object display method, and mainly defines a transition effect at the time of switching between a plurality of still images. Specifically, the still effect 730 includes an external cross transition flag 731, an external start transition type 732, an external end transition type 733, an external start transition time 734, an external end transition time 735, and an internal cross transition flag 741. An internal start transition type 742, an internal end transition type 743, an internal start transition time 744, an internal end transition time 745, and other information 750. Hereinafter, these will be described.
[0143]
FIG. 22 schematically shows a state in which a presentation (display) of one still image is started by the slide-in method and the presentation is ended by the slide-out method. As shown in FIG. 22, the still image is displayed by slide-in from the display state of the background image, and the display state of the background image is shifted again by slide-out. Thus, the time from the start to the end of the presentation of one still image object is indicated by the still image total display time. When one still image is displayed, the period from the start of display until the display of one still image is completed is called a start transition, from the state where one still image is displayed until the display ends. Is called an end transition. Further, the time required for the start transition is called a start transition time, and the time required for the end transition is called an end transition time.
[0144]
FIG. 23 schematically shows a state in which a plurality of still images (# 1 to #n) are sequentially displayed by one item for still images. Each still image is displayed by the slide-in and slide-out methods shown in FIG. In this way, when a plurality of still images are displayed in order, their transition (switching) period is called a transition. Then, as shown in FIG. 23, a transition between a plurality of still images defined by one item is referred to as an “internal transition” IT, and transitions positioned at the beginning and end of one item are referred to as an “external transition” ET. Call.
[0145]
As described above, in the information in the still effect 730 shown in FIG. 21, the external start transition type 732 indicates the type of start transition of the first still image defined by one item, and the external start transition time. Reference numeral 734 denotes the period (time width). Here, as the type of transition, for example, in addition to the slide method (slide-in and slide-out) shown in FIG. 22, any one of wipe, dissolve, and the like can be specified. The same applies to other transition types. The external end transition type 733 indicates the type of end transition of the last still image among a plurality of still images defined by one item, and the external end transition time 735 indicates the period.
[0146]
Similarly, the internal start transition type 742 indicates the type of transition on the start side in the transition between a plurality of still images defined by one item, and the internal start transition time 744 indicates the period (see FIG. 22). Further, the internal end transition type 743 indicates the type of transition on the end side in the transition between a plurality of still images defined by one item, and the internal end transition time 745 indicates the period (see FIG. 22).
[0147]
Therefore, when a plurality of still images are sequentially displayed by one item, the display of the first still image is started over a period (time width) defined by the external start transition time 734 according to the external start transition type 732. . In addition, each of the plurality of still images in the subsequent items is displayed in the period of the internal end transition time 743 in accordance with the internal end transition type 741, and is displayed in the period of the internal start transition time 744 in accordance with the internal start transition type 742. Be started. This process is repeated for a plurality of still images defined by one item. Then, when the display of the last still image among the plurality of still images defined by the item is ended, the display ends in the period of the external end transition time 735 by the method defined in the external end transition type 733.
[0148]
As described above, for the transition of a plurality of still images defined by one item, the type and period of the start transition of the still image at the beginning of the item, the type and period of the end transition of the still image at the end of the item, The start transition type and time of each of the plurality of still images defined by the item, and the end transition type and time of each of the plurality of still images defined by the play item can be defined independently. However, the types and times of the internal start transitions of a plurality of still images included in one item must be the same. For example, the start transition of the second still image is set to m seconds by wiping, and the third still image Different settings cannot be made such that the start transition is n seconds (n ≠ m) by slide. The same applies to a plurality of internal end transitions included in one item. Therefore, for still images other than the beginning or end of one item, all the same transition types (for example, slide) and start transitions are executed in the same period, and all the same transition types (for example, wipe) and The end transition is executed in the same period.
[0149]
Next, the cross transition will be described. The cross transition is one aspect of the above-described transition, and in the transition from the previous still image to the next still image, the end transition of the previous still image and the start transition of the next still image are performed simultaneously.
[0150]
FIG. 24 schematically shows an outline of the cross transition. In FIG. 24, there are a normal transition and a cross transition as transitions of two still images that are displayed in succession (previous still image is an airplane image and next still image is a ship image). To do. The normal transition is the transition described above, and is basically a method of executing the start transition of the next still image after the end transition of the previous still image is completed. That is, as shown in the lower part of FIG. 24, the display of the previous still image (airplane image) is completely completed, and after the background image is displayed for a moment, the display of the next still image (ship image) starts. Will do.
[0151]
On the other hand, the cross transition is a method in which the end transition of the previous still image and the start transition of the next still image are simultaneously performed in parallel. Therefore, as shown in the upper part of FIG. 24, the previous image (airplane image) gradually slides out to the left of the screen, and at the same time, the next image (ship image) starts from the right side of the screen. Slide in. Therefore, the background image is not displayed during the transition as in the case of the normal transition.
[0152]
The external cross transition flag 731 and the internal cross transition flag 741 in the still effect 730 shown in FIG. 21 are flags that indicate whether or not to perform the above cross transition in the transition between two still images. When the flag is set to “1”, a cross transition is executed, and when the flag is set to “0”, a normal transition is executed. When the external cross transition flag 731 is set to “1”, the cross transition is executed in the transition between the last still image of the item and the first still image of the next play item. When the internal cross transition flag is set to “1”, the cross transition is executed in all transitions between a plurality of still images defined by the play item.
[0153]
As can be understood from FIG. 24, in the normal transition, there is no problem even if the end transition time of the previous still image is different from the start transition time of the next still image. However, when executing the cross transition, the end transition of the previous still picture and the start transition of the next still picture must be executed during the same cross transition time. Therefore, when performing the internal cross transition, the playback device executes the transition with the start transition side setting enabled and the end transition side setting disabled. Specifically, when the internal cross transition flag 741 in a certain play item is set to “1”, the internal start transition type 742 and the internal start transition time 744 are validated, and the cross transition is executed accordingly. For example, the internal start transition type 742 is set to slide, the internal end transition type 743 is set to wipe, the internal start transition time 744 is set to m seconds, and the internal end transition time 745 is n seconds. When (n ≠ m) is set, the transition type is slide, and the cross transition is executed with a cross transition time of m seconds.
[0154]
The same can be applied to the external cross transition. That is, when the external cross transition flag 731 in a certain play item is set to “1”, in the external transition between the last still image of the play item and the first still image of the next play item. Perform a cross transition. In this case, the transition type and the cross transition time may be the external start transition type 732 and the external start transition time 734 of the next item.
[0155]
Note that the total playback time of a still image by the play item differs depending on whether or not the internal cross transition is performed for one item. This will be described with reference to FIG. As shown in FIG. 25, the internal start transition time 744 = “a” of the still image included in a play item, the internal end transition time 745 = “c”, and the remaining time (that is, from the still image total display time) The time obtained by subtracting the internal start transition time and the internal end transition time) is defined as “b”. When the internal cross transition flag is set to “0” (= OFF), if the number of still images (number of images) defined by the item is n, the total playback time of one item is = (a + b + c) × n It becomes. On the other hand, when the internal cross transition flag is set to “1” (= ON) and the number of still images (number of images) defined by the item is n, the total playback time of one play item is (a + b) ) × n + c. This is because the internal end transition time 745 for each still image is ignored by the internal cross transition.
[0156]
(Still image playback processing)
Next, still image reproduction using still image items will be described. FIG. 26 shows an internal configuration example of the still picture decoding unit 517 of the information recording / reproducing apparatus shown in FIG. As shown in FIG. 26, the still image decoding unit 517 includes a still image decoder 517c, a switch SW3, a video buffer 517a, a video buffer 517b, and an image synthesizer 517d. The video buffer 517a and the video buffer 517b are used to store one piece of still image data in the above-described transition of still images.
[0157]
With reference to FIGS. 14 and 26, a basic operation in still image reproduction will be described. The system controller 520 performs disc playback control on the optical disc 100, and the optical pickup 502 outputs a read signal S 7 to the demodulator 506. The demodulator 506 demodulates the recording signal S8 from the read signal S7, supplies it to the system controller 520 as demodulated data D8, and supplies it to the still image decoding unit 517. The system controller 520 extracts logical information file data (including the playlist information file 120 and the object information file 130) from the demodulated data D8, determines a playback address based on the logical information file data, and controls the disc and pickup. As a result, the still image object included in the demodulated data D8 is sent to the still image decoding unit 517 in the form of a packet.
[0158]
In the still picture decoding unit 517 having the configuration shown in FIG. 26, the still picture object received by the still picture decoder 517c is decoded to generate still picture data, and stored in the video buffer 517a or 517b via the switch SW3. Here, the system controller 520 stores the still image data to be continuously reproduced in the video buffers 517a and 517b in accordance with the still image item by controlling the switch SW3. When the still image transitions, the system controller 520 controls the image synthesizer 517d and executes the transition according to the setting in the still effect 730 described above. The still image data DST synthesized by the image synthesizer 517d is displayed on a display device or the like.
[0159]
Next, switching of still image data in the transition will be described. FIG. 27 shows the data storage state of the video buffers 517a and 517b in the case of the normal transition. The example of FIG. 27 shows a normal transition from still image #n to still image # n + 1. At time T1 during the steady playback time of the still picture #n, the still picture #n is stored in the video buffer 517a, and the still picture is played back. The other video buffer 517b stores one previous still image, but the data is discarded after that and is empty. In the empty video buffer 517b, the still image # n + 1 and the still image # n + 1 are stored by the switching time T2 of the still image #n and # n + 1 during the transition period.
[0160]
In the transition period, the still picture #n is output from the video buffer 517a until the switching time T2, but when the switching time T2 comes and the output of the still picture # n + 1 from the video buffer 517b starts, the video buffer 517a. The still image #n is discarded. Thereafter, as shown in the figure, the still picture # n + 1 is read out while being stored in the video buffer 517b, and the other video buffer 517a is empty. However, the next still image # n + 2 is stored in the video buffer 517a before the next transition switching time. As described above, when the still images #n and # n + 1 are switched without an interval (non-display time) at the switching time T2, it is necessary to store the next still image in the other video buffer by the switching time. is there. However, if an interval may occur at the switching time, the transition can be performed using only one video buffer.
[0161]
Next, switching of still image data in the cross transition will be described. FIG. 28 shows the data storage state of the video buffers 517a and 517b in the case of a cross transition. The example of FIG. 28 shows a cross transition from still image #n to still image # n + 1. Time T4 is a steady reproduction period of still picture #n, and still picture #n is stored in video buffer 517a. The other video buffer 517b is empty at time T4, but still image # n + 1 is decoded and stored in buffer 517b by time T5 when the cross transition starts.
[0162]
At time T5, the still picture #n is stored in the video buffer 517a, and the still picture # n + 1 is stored in the video buffer 517b. The image synthesizer 517d synthesizes the outputs from both buffers 517a and 517b and performs a cross transition. When the cross transition period ends at time T6, the still image #n stored in the video buffer 517a is discarded and the video buffer 517a becomes empty. In the video buffer 517a, the next still image # n + 2 is stored until the next cross transition period.
[0163]
Next, the reproduction process of the still image playlist will be described with reference to the flowcharts of FIGS. FIG. 29A shows a main routine for reproducing a still image playlist. The following processing is basically performed under the control of the system controller 520. First, the system controller 520 reads a playlist (step S201), and sequentially reproduces a plurality of still image items included in the playlist (step S202). Then, when the reproduction of the still image is completed up to the last item (step S203; Yes), the process ends.
[0164]
FIG. 30 shows details of the still image play item playback step (step S202) shown in FIG. 29A in the case of the normal transition. First, the system controller 520 reads the data of the still image # 1 into one of the video buffers 517a and 517b (here, assumed to be the video buffer 517a) based on the image index number 721 shown in FIG. 21 (step S211). ), The external start transition is executed based on the external start transition type 732 and the external start transition time 734 in the still effect 730 (step S212). After the external start transition is completed, the still image # 1 is displayed in the steady display period of the still image # 1 (step S213).
[0165]
Then, the system controller 520 determines whether or not the still image is the last still image in the item (step S214). If not, the next still image data (still image # 2 in this example) is determined. Is read into the other video buffer (the one not stored with the previous still image # 1 in step S211, here referred to as the video buffer 517b) (step S215), and the still image currently being reproduced (the still image in this example) Wait for the end of the regular display time of # 1) (step S216).
[0166]
As shown in FIG. 29B, the process of waiting for the end of the steady display time is first performed by the system controller 520 reading the system clock (step S241) and determining whether the steady display time has elapsed (step S241). Step S242). The steady display time is a period in which the still image is completely displayed (that is, a period other than the transition period), and specifically, the still image total display time in the still image object play item 720 in FIG. 723 is obtained by subtracting the internal start transition time 744 and the internal end transition time 745. When the steady display time has elapsed, the still image display time ends (step S242; Yes), and the process returns to the routine of FIG. Then, the internal end transition is executed according to the internal end transition type 743 and the internal end transition time 745 in the still effect 730 (step S217). Subsequently, according to the internal start transition type 742 and the internal start transition time 744, the internal start transition of the still image # 2 already read into the video buffer 517b in step S215 is executed (step S218). When the internal start transition of the still image # 2 ends, the still image # 2 is displayed as it is (step S213).
[0167]
Thus, steps S213 to S218 are repeatedly executed until the order of reproduction of the last still image included in the item being reproduced is reached, and a plurality of still images are sequentially reproduced with a transition effect according to the setting in the still effect 730. . Then, when the playback order of the last still image is reached (step S214; Yes), the routine waits for the stationary display time of the still image to end (step S219). This process is the same as that described above with reference to FIG. Then, when the regular display time of the last still image ends, the system controller 520 executes the external end transition of the item according to the external end transition type 732 and the external end transition time 735 (step S220). Thus, the reproduction of one still image play item is completed.
[0168]
Next, still picture play item reproduction processing (step S202) in the case of a cross transition will be described with reference to FIG. In the still image play item reproduction process in the case of the cross transition, after the steady display time of one still image has elapsed in step S216, instead of performing the internal end transition and the internal start transition, the point of performing the cross transition (step S221) Although different from the case of the normal transition, the other points are the same as in the case of the normal transition.
[0169]
As described above, according to the present embodiment, when a still image object is reproduced according to the still image items constituting the playlist, the transition (transition) in continuous reproduction of a plurality of still images in the still image item is performed. The effect information is recorded. Therefore, various transitions can be executed based on the set transition effect (ie, transition type, transition time, cross transition or normal transition, etc.), and changes still image playback. be able to. In addition, since the transition effect is set by setting a plurality of still images in units of items, various transition effects can be set with a smaller amount of information compared to the case where the transition effect is set for each still image. .
[0170]
In the above-described embodiments, the optical disc 100 as an example of the information recording medium and the recorder or player related to the optical disc 100 as an example of the information reproducing / recording apparatus have been described. However, the present invention is limited to the optical disc and the recorder or player. Instead, the present invention can also be applied to various information recording media corresponding to other high-density recording or high transfer rate, and its recorder or player.
[0171]
Further, the present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit or idea of the invention that can be read from the claims and the entire specification, and is accompanied by such changes. An information recording medium, an information recording apparatus and method, an information reproducing apparatus and method, an information recording / reproducing apparatus and method, a computer program for recording or reproduction control, and a data structure including a control signal are also included in the technical scope of the present invention. Is.
[Brief description of the drawings]
FIG. 1 shows a basic structure of an optical disc that is an embodiment of an information recording medium of the present invention, the upper portion being a schematic plan view of an optical disc having a plurality of areas, and the lower portion associated therewith is It is a schematic conceptual diagram of the area structure in radial direction.
FIG. 2 is a schematic conceptual diagram of a conventional MPEG2 program stream (FIG. 2A) and a schematic conceptual diagram of an MPEG2 transport stream used in the present embodiment (FIG. 2B).
FIG. 3 is a diagram schematically showing a data structure recorded on the optical disc of the embodiment.
4 is a diagram schematically showing the data structure of the title shown in FIG. 3. FIG.
5 is a diagram schematically showing the data structure of the playlist set shown in FIG. 3. FIG.
FIG. 6 is a diagram conceptually showing the structure of a playlist set.
FIG. 7 is a diagram schematically illustrating a data structure of a transport stream object item and a still image object item.
FIG. 8 is a diagram conceptually showing the structure of a title element when a playlist set has a plurality of playlists.
FIG. 9 is a diagram conceptually showing the structure of a title element when a playlist set has a single playlist.
10 is a diagram schematically showing details of a data structure in each object shown in FIG. 3; FIG.
FIG. 11 shows an example of multiplexing an upper stream program # 1 elementary stream and an intermediate program # 2 elementary stream to form a transport stream for these two programs. It is a figure which shows a mode conceptually by making a horizontal axis into a time axis.
FIG. 12 conceptually shows an image of TS packets multiplexed in one transport stream as a packet arrangement along time in the present embodiment.
FIG. 13 is a diagram schematically showing a logical configuration of data on an optical disc in the embodiment, focusing on development from a logical hierarchy to an object hierarchy or a real hierarchy.
FIG. 14 is a block diagram of an information recording / reproducing apparatus according to an embodiment of the present invention.
FIG. 15 is a flowchart showing a recording operation (part 1) of the information recording / reproducing apparatus in the embodiment.
FIG. 16 is a flowchart showing a recording operation (part 2) of the information recording / reproducing apparatus in the embodiment.
FIG. 17 is a flowchart showing a recording operation (part 3) of the information recording / reproducing apparatus in the embodiment.
FIG. 18 is a flowchart showing a recording operation (part 4) of the information recording / reproducing apparatus in the embodiment.
FIG. 19 is a flowchart showing a reproducing operation of the information recording / reproducing apparatus in the embodiment.
FIG. 20 is a diagram schematically illustrating a data structure of a still image object.
FIG. 21 is a diagram schematically illustrating a data structure of a play item for a still image.
FIG. 22 is a diagram illustrating a still image reproduction method according to a still image play item.
FIG. 23 is a diagram schematically showing a state of reproduction of a plurality of play items defined by still image play items.
FIG. 24 is a diagram for comparing and explaining still image reproduction methods using a normal transition and a cross transition.
FIG. 25 is a diagram illustrating a difference in the total playback time of a still image play item when an internal cross transition is performed and when it is not performed;
26 is a block diagram showing elements related to still image reproduction in the video decoder shown in FIG. 9. FIG.
FIG. 27 is a diagram illustrating data stored in a video buffer in the case of a normal transition.
FIG. 28 is a diagram illustrating data stored in a video buffer in the case of a cross transition.
FIG. 29 is a flowchart of still image playlist reproduction processing and steady display time end waiting processing included therein.
FIG. 30 is a flowchart of still image play item reproduction processing in the case of a normal transition during still image playlist reproduction processing;
FIG. 31 is a flowchart of still image play item reproduction processing in the case of a cross transition during still image playlist reproduction processing;
[Explanation of symbols]
100 optical disc
105 File system
110 Disk information file
120 playlist information file
126 playlists
126S playlist set
130 Object information file
131 AU (Associate Unit) table
132 AU
132I AU information
134 ES map table
134d ES address information
140 Object data file
142 TS (Transport Stream) Object
146 TS packet
200 titles
200-2 Title element
204 items
302 PU (presentation unit)
302I PU information
500 Information recording / reproducing apparatus
502 Optical pickup
506 Demodulator
508 Demultiplexer
511 Video decoder
512 audio decoder
513 Sub-picture decoder
520 system controller
540 memory
606 modulator
608 formatter
610 TS object generator
611 video encoder
612 Audio Encoder
613 Sub-picture encoder

Claims (8)

First recording means for recording a plurality of still image information on an information recording medium;
An external designating the start transition effect of the first still picture information in the still picture set composed of a plurality of still picture information to be played back continuously, and the end transition effect of the last still picture information in the still picture set Second recording means for recording transition effect information on the information recording medium;
A third recording means for recording internal transition effect information specifying the start transition effect and the end transition effect of each still image information among a plurality of still image information included in the still image set on the information recording medium,
Each of the external transition effect information and the internal transition effect information includes transition effect type information indicating a type of transition effect, and transition effect time information indicating a period of the transition effect,
The internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information,
Each of the internal start transition effect type information, the internal end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is the same for all still images included in the still image set. An information recording apparatus characterized in that it is defined in 1. A first recording step of recording a plurality of still image information on an information recording medium;
An external designating the start transition effect of the first still picture information in the still picture set composed of a plurality of still picture information to be played back continuously, and the end transition effect of the last still picture information in the still picture set A second recording step of recording transition effect information on the information recording medium;
A third recording step of recording internal transition effect information designating a start transition effect and an end transition effect of each still image information among a plurality of still image information included in the still image set on the information recording medium,
Each of the external transition effect information and the internal transition effect information includes transition effect type information indicating a type of transition effect, and transition effect time information indicating a period of the transition effect,
The internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information,
Each of the internal start transition effect type information, the internal end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is the same for all still images included in the still image set. An information recording method as defined in 1. An information reproducing apparatus for reproducing an information recording medium,
The information recording medium is
A plurality of still image information recorded by an information recording device or reproduced by an information reproducing device;
Designating the start transition effect of the first still picture information in the still picture set composed of a plurality of still picture information to be reproduced continuously, and the end transition effect of the last still picture information in the still picture set External transition effect information recorded by the information recording device or read by the information reproducing device when reproducing the plurality of still image information;
The start transition effect and the end transition effect of each still image information among a plurality of still image information included in the still image set are designated, and recorded by the information recording device or the plurality of still images by the information reproducing device A computer-readable information recording medium in which internal transition effect information read at the time of reproducing information is recorded,
Each of the external transition effect information and the internal transition effect information includes transition effect type information indicating a type of transition effect, and transition effect time information indicating a period of the transition effect,
The internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information,
Each of the internal start transition effect type information, the internal end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is the same for all still images included in the still image set. Stipulated in
The information reproducing apparatus includes:
Reading means for reading the plurality of still image information, the external transition effect information and the internal transition effect information from the information recording medium;
According to the external transition effect information, the start portion of the first still image information included in the still image set and the end portion of the last still image information included in the still image set are reproduced, and according to the internal transition effect information An information reproducing apparatus comprising: reproducing means for reproducing a start portion and an end portion of each still image information among a plurality of still image information included in the still image set. An information reproducing method for reproducing an information recording medium,
The information recording medium is
A plurality of still image information recorded by an information recording device or reproduced by an information reproducing device;
Designating the start transition effect of the first still picture information in the still picture set composed of a plurality of still picture information to be reproduced continuously, and the end transition effect of the last still picture information in the still picture set External transition effect information recorded by the information recording device or read by the information reproducing device when reproducing the plurality of still image information;
The start transition effect and the end transition effect of each still image information among a plurality of still image information included in the still image set are designated, and recorded by the information recording device or the plurality of still images by the information reproducing device A computer-readable information recording medium in which internal transition effect information read at the time of reproducing information is recorded,
Each of the external transition effect information and the internal transition effect information includes transition effect type information indicating a type of transition effect, and transition effect time information indicating a period of the transition effect,
The internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information,
Each of the internal start transition effect type information, the internal end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is the same for all still images included in the still image set. Stipulated in
The information reproduction method includes:
Reading the plurality of still image information, the external transition effect information and the internal transition effect information from the information recording medium;
According to the external transition effect information, the start portion of the first still image information included in the still image set and the end portion of the last still image information included in the still image set are reproduced, and according to the internal transition effect information A reproduction step of reproducing a start portion and an end portion of each still image information among a plurality of still image information included in the still image set. First recording means for recording a plurality of still image information on an information recording medium;
An external designating the start transition effect of the first still picture information in the still picture set composed of a plurality of still picture information to be played back continuously, and the end transition effect of the last still picture information in the still picture set Second recording means for recording transition effect information on the information recording medium;
Third recording means for recording internal transition effect information designating a start transition effect and an end transition effect of each still image information among a plurality of still image information included in the still image set on the information recording medium;
Reading means for reading the plurality of still image information, the external transition effect information and the internal transition effect information from the information recording medium;
According to the external transition effect information, the start portion of the first still image information included in the still image set and the end portion of the last still image information included in the still image set are reproduced, and according to the internal transition effect information Replay means for replaying the start part and end part of each still picture information among a plurality of still picture information included in the still picture set,
Each of the external transition effect information and the internal transition effect information includes transition effect type information indicating a type of transition effect, and transition effect time information indicating a period of the transition effect,
The internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information,
Each of the internal start transition effect type information, the internal end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is the same for all still images included in the still image set. An information recording / reproducing apparatus characterized by the above. A first recording step of recording a plurality of still image information on an information recording medium;
An external designating the start transition effect of the first still picture information in the still picture set composed of a plurality of still picture information to be played back continuously, and the end transition effect of the last still picture information in the still picture set A second recording step of recording transition effect information on the information recording medium;
A third recording step of recording, on the information recording medium, internal transition effect information that specifies a start transition effect and an end transition effect of each still image information among a plurality of still image information included in the still image set;
Reading the plurality of still image information, the external transition effect information and the internal transition effect information from the information recording medium;
According to the external transition effect information, the start portion of the first still image information included in the still image set and the end portion of the last still image information included in the still image set are reproduced, and according to the internal transition effect information A reproduction step of reproducing the start portion and the end portion of each still image information among a plurality of still image information included in the still image set,
Each of the external transition effect information and the internal transition effect information includes transition effect type information indicating a type of transition effect, and transition effect time information indicating a period of the transition effect,
The internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information,
Each of the internal start transition effect type information, the internal end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is the same for all still images included in the still image set. An information recording / reproducing method characterized by the above. By running on the computer,
First recording means for recording a plurality of still image information on an information recording medium;
An external designating the start transition effect of the first still picture information in the still picture set composed of a plurality of still picture information to be played back continuously and the end transition effect of the last still picture information in the still picture set Second recording means for recording transition effect information on the information recording medium;
The computer is used as third recording means for recording internal transition effect information for designating a start transition effect and an end transition effect of each still image information among a plurality of still image information included in the still image set on the information recording medium. An information recording program to function,
Each of the external transition effect information and the internal transition effect information includes transition effect type information indicating a type of transition effect, and transition effect time information indicating a period of the transition effect,
The internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information,
Each of the internal start transition effect type information, the internal end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is the same for all still images included in the still image set. An information recording program characterized by the above. An information reproduction program for reproducing an information recording medium,
The information recording medium is
A plurality of still image information recorded by an information recording device or reproduced by an information reproducing device;
Designating the start transition effect of the first still picture information in the still picture set composed of a plurality of still picture information to be reproduced continuously, and the end transition effect of the last still picture information in the still picture set External transition effect information recorded by the information recording device or read by the information reproducing device when reproducing the plurality of still image information;
The start transition effect and the end transition effect of each still image information among a plurality of still image information included in the still image set are designated, and recorded by the information recording device or the plurality of still images by the information reproducing device A computer-readable information recording medium in which internal transition effect information read at the time of reproducing information is recorded,
Each of the external transition effect information and the internal transition effect information includes transition effect type information indicating a type of transition effect, and transition effect time information indicating a period of the transition effect,
The internal transition effect information includes internal start transition effect type information, internal end transition effect type information, internal start transition effect time information and internal end transition effect time information,
Each of the internal start transition effect type information, the internal end transition effect type information, the internal start transition effect time information, and the internal end transition effect time information is the same for all still images included in the still image set. Stipulated in
By executing the information reproduction program on a computer,
The information from the recording medium, the plurality of still picture information, the external transition effect information and reading means for reading the internal transition effect information from the information recording medium,
According to the external transition effect information, the start portion of the first still image information included in the still image set and the end portion of the last still image information included in the still image set are reproduced, and according to the internal transition effect information An information reproduction program for causing the computer to function as reproduction means for reproducing a start portion and an end portion of each still image information among a plurality of still image information included in the still image set.

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