JP2875231B2 - Method and apparatus for reproducing data from optical disk according to program chain information, method and apparatus for recording reproduced data on optical disk together with program chain information, and communication system for transferring and reproducing reproduction data together with program chain information - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for reproducing information from an optical disk, an apparatus and a method for recording reproduced data on an optical disk, and a communication system. A plurality of selectable languages, a plurality of sub-pictures and a large number of audio streams for a movie are recorded at high density as reproduction information, and the reproduction information is selected to reproduce the reproduction information from an optical disk which can be reproduced in an interactive environment. Method and apparatus for selectively playing back, apparatus and method for recording playback data on an optical disc, and at least one movie, a plurality of selectable languages for the movie, a plurality of sub-pictures, and a number of audio streams. Communication system capable of transmitting and reproducing via a communication system About.

[0002]

2. Description of the Related Art In recent years, with the progress of data compression technology and high-density recording technology, high-density recording type optical disks have been developed as recording media capable of storing large amounts of data. Such high-density recording type storage media includes not only audio data but also video data as playback data.
Data can be recorded, and video data of a plurality of titles and audio data of a plurality of titles can be recorded. Moreover, since such a recording medium has a large storage capacity, not only a single story video data or a single arrangement of audio data specified in advance, but also a multi-story of a user selectable multi story. Video data or selectable multi-arrangement audio data can be recorded, and an interactive environment is being prepared.

[0003] As multi-story video data, in a movie or a program, the user actively selects scene development and continuously plays back the selected scenes, and the story is varied according to the user's preference. There is an example that is expanded to. That is, normally, the story of a movie is developed by a so-called "start-and-stop", but the part of the story corresponding to the "ki" played first, that is, the movie starts from the segment story and corresponds to the "sho" A plurality of, for example, two segment stories are prepared in advance, and a plurality of, for example, two segment stories corresponding to “roll” are provided for each of the segment stories corresponding to “sho”. Segment stories, a total of four segment stories are prepared, and a plurality of segment stories corresponding to the “connection”, for example, 2
Segment stories, a total of eight segments
There is an example where a story is prepared. In such a multi-story example, a user can enjoy a movie in a different development by selecting a desired segment story at a transition point of each story.

[0004] In addition, it is possible to construct a quiz program of various difficulty levels by composing a quiz program with such a multi story, or to construct a quiz program focusing on a quiz in which a user is particularly interested. it can. Also,
When fortune-telling is represented by video, the result of fortune-telling can also be represented by video according to the user's "yes" or "no", and further according to the user's date of birth.
Further, as the audio data of the multi-arrangement, there is an example in which a scene of a solo voice and a scene of a choir can be selected in a specific movement when performing an orchestra.

[0005]

In a recording medium on which multi-story video data or multi-arrangement audio data is recorded as reproduction data, a segment story is selected from the next segment story. The selection information for branching to the segment story, that is, the branch information, is not recorded on the recording medium itself, but a dedicated application is prepared. The application is associated with the recorded contents of the recording medium by the application. Is adopted. Therefore, a dedicated application is required for each recording medium. That is, even if the storage medium is common, there is a problem that a dedicated application has to be developed according to the recording data recorded on the recording medium.

There is also a recording medium of a type in which branch information or selection information is recorded on a recording medium. In such a type of recording medium, branch information or selection information is stored in a specific area of the recording medium. Information is stored, and branch information or selection information is extracted by always referring to the determined area. In such a type of recording medium, it takes time to access the selection information, or when the recorded data is recorded on another recording medium and reproduced, the branch information or the selection information is lost and the reproduction is not performed. There is a problem that may cause trouble.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a reproduction method and a reproduction apparatus capable of realizing reproduction of reproduction data in an interactive environment. .

An object of the present invention is to provide a reproducing method and a reproducing apparatus capable of recording reproduction data that can be reproduced in an interactive environment.

It is another object of the present invention to provide a communication system capable of transferring reproduction data that can be reproduced in an interactive environment together with reproduction control information and reliably reproducing the data on a receiving side.

[0010]

According to the present invention, a reproduction target area in which reproduction target data of a certain story is stored and at least two areas each corresponding to a part of the story.
In an apparatus for reproducing data from an optical disk having a data area having a program chain information table that defines the above program chain, the reproduction target area is arranged with a large number of data cells, and each cell is arranged in reproduction order. Each video object unit is a combination of video and audio packs or a combination of video, audio and sub-picture packs, and is defined as one playback unit. The program chain information table has program chain information that determines reproduction of each of the program chains, and a search pointer corresponding to a program chain number for searching for the program chain information. information Each is a cell reproduction information table in which cell addresses for specifying the reproduction order of the data cells in the program chain are described in the reproduction order. Each cell address is the first video object object constituting the cell. A cell playback information table specified by an address of a unit and an address of a last video object unit, content information on the number of cells constituting the program chain, and program chain navigation information, If there is a previous program chain to be played prior to the program chain, the program chain navigation information includes the program chain number before identifying the previous program chain or the program chain number. Ahead If the program chain is not to be reproduced, before the program
The previous program chain information with a description without a chain, and the next program to identify the next program chain, if any, to be played next to that program chain
If there is no program chain to be reproduced next to the program number, the next program chain information having a description of no next program chain; and The program chain information table is searched to obtain the program chain information by the search pointer corresponding to the designated program chain number, and the cells are successively written in the description order in accordance with the cell address described in the cell reproduction information table. Search means for obtaining a video pack, an audio pack or a sub-picture pack from a video object unit in this cell, decoding these and outputting them as a video signal and an audio signal, and .Output means for reproducing chains The next or the instruction means for instructing a previous program chain, following or during playback of the specified program chain, before the program
When a chain instruction is given, if the presence or absence of the designated program chain has been confirmed by referring to the program chain information, the program chain is linked to the program chain and reproduced. And a linking means.

According to the present invention, a data area having a reproduction target area in which reproduction target data of a certain story is stored and a program chain information table which defines at least two or more program chains each corresponding to a part of the story. In the method for reproducing data from an optical disc comprising: a plurality of data cells arranged in the reproduction target area, each cell comprising a plurality of video object units arranged in reproduction order, The unit is a combination of video and audio packs or a combination of video, audio and sub-picture packs, and is defined as one playback unit, and the program chain information table determines playback of each program chain. program·
Chain information and a search pointer corresponding to a program chain number for searching for the program chain information. Each of the program chain information sets a reproduction order of the data cells in the program chain. A cell reproduction information table in which cell addresses to be specified are described in reproduction order. Each cell address is specified by an address of a first video object unit and an address of a last video object unit constituting the cell. A cell playback information table, content information on the number of cells constituting the program chain, and program chain navigation information, wherein the program chain navigation information is played back prior to the program chain. If there is a program chain prior to the-previous program chain number or the program to identify the previous program chain
If there is no program chain to be played prior to the chain, the previous program chain information with the description of no previous program chain and the next program to be played next to the program chain If there is a chain, the next program
The next program chain number specifying the chain or, if there is no program chain to be reproduced next to the program chain, the next program chain information having a description of no next program chain; In the reproducing method, the program chain information table is searched to acquire program chain information by a search pointer corresponding to a designated program chain number, and a cell address described in a cell reproduction information table therein is obtained. And a retrieval step of acquiring cells one after another in the order of description according to the following. Extracting a video, audio pack or sub-picture pack from a video object unit in this cell, decoding these and outputting them as a video signal and an audio signal The program specified above An output step of reproducing a chain, an instruction step of designating a next or previous program chain, and an instruction of the next or previous program chain during reproduction of the designated program chain. A link step of linking to the program chain and reproducing the program chain if the presence or absence of the designated program chain has been confirmed by referring to the program chain information. A reproducing method is provided.

According to the present invention, a step of generating a plurality of packetized data packs by encoding video data and audio data or video data, audio data and sub-picture data; Providing units, wherein each data unit is a combination of a video pack and an audio pack,
Alternatively, a step of preparing a data unit in which one unit of reproduction related to a combination of a video pack, an audio pack and a sub-picture pack is determined, and a step of defining a number of data cells, Defining a data cell which is arranged therein in the reproduction order and is composed of a large number of data units, and a step of generating a program chain information table.
Generating a program chain information table defining two or more program chains corresponding to a part of a video story in which the chain information table is located; and storing the generated program chain information table in a data management area. Recording the video object units constituting the cells one after another in the reproduction target area, and recording a large number of cells substantially in the reproduction target area. In the recording method for recording, the program chain information table has program chain information for determining reproduction of each of the program chains and a search pointer corresponding to a program chain number for searching for the program chain information. And each program chain information Each is a cell reproduction information table in which cell addresses for specifying the reproduction order of the data cells in the program chain are described in the reproduction order. Each cell address is the first video object object constituting the cell. A cell playback information table specified by an address of a unit and an address of a last video object unit, content information on the number of cells constituting the program chain, and program chain navigation information, If there is a previous program chain to be played prior to the program chain, the program chain navigation information includes the program chain number before identifying the previous program chain or the program chain number. Ahead If the program chain is not to be reproduced, before the program
The previous program chain information with a description without a chain, and the next program to identify the next program chain, if any, to be played next to that program chain
Reproduction data comprising: a chain number or, if there is no program chain to be reproduced next to the program chain, next program chain information having a description of no next program chain. And a recording method for recording the information on an optical disc.

According to the present invention, means for generating a plurality of packetized data packs by encoding video data and audio data or video data, audio data and sub-picture data, and Means for preparing a data unit in which a unit is defined as one unit of reproduction related to a combination of a video pack and an audio pack or a combination of a video pack, an audio pack and a sub-picture pack, and each data cell Means for arranging a large number of data units in the order of reproduction and preparing a large number of such data cells, and means for generating a program chain information table. Establishing two or more program chains corresponding to a part Means for generating a program chain information table, recording the generated program chain information table in a data management area, and recording video object units constituting the cells one after another in a reproduction target area, thereby Recording means for recording reproduction data on an optical disk, comprising: recording means for recording cells substantially in the reproduction target area, wherein the program chain information table includes a program chain for determining reproduction of each of the program chains. Information and a search pointer corresponding to a program chain number for searching for the program chain information, and each of the program chain information specifies a reproduction order of the data cells in the program chain. Cell addresses in the playback order A cell playback information table specified by the address of the first video object unit and the address of the last video object unit constituting the cell, Content information on the number of cells constituting the program chain, and program chain navigation information, wherein the program chain navigation information is a program chain that is to be reproduced prior to the program chain. If there is a program chain number before specifying the previous program chain, or if there is no program chain to be played prior to the program chain, enter the description without the previous program chain. Program before having Program chain information and, if there is a next program chain to be played next to the program chain, a next program chain number for identifying the next program chain or the next program chain. If there is no program chain to be reproduced next, a recording device for recording reproduction data on an optical disc, characterized by including: a next program chain information having a description of no next program chain. Provided.

According to the present invention, a program chain information table for defining at least two or more program chains corresponding to a part of a certain story, a transfer means for transferring a large number of data cells as data to be reproduced, and a program chain In a communication system provided with a reproducing means for reproducing the data cells using an information table, each cell to be transferred is constituted by a number of video object units arranged in reproduction order, The unit is a combination of video and audio packs or a combination of video, audio and sub-picture packs, and is defined as one playback unit. The transferred program chain information table stores the program chain information of each program chain. Program check for playback Have emission information and the search pointers corresponding to the program chain information in the program chain number for searching, the respective program
Each of the chain information is a cell reproduction information table in which a cell address for specifying the reproduction order of the data cells in the program chain is described in the reproduction order, and each cell address is the first video constituting the cell. A cell reproduction information table specified by the address of the object unit and the address of the last video object unit, content information on the number of cells constituting the program chain, and program chain navigation information. And the program chain navigation information includes the program information to be reproduced before the program chain.
If there is a chain, the program chain number before specifying the previous program chain, or the description without the previous program chain if there is no program chain to be played prior to the program chain And the next program chain to be reproduced next to the previous program chain, if any, and the next program chain number identifying the next program chain or the If there is no program chain to be played next to the program chain, next program chain information having a description of no next program chain; and Search the table for the specified program chain Search means for acquiring program chain information by a search pointer corresponding to a number and sequentially acquiring cells in the order of description according to a cell address described in a cell reproduction information table therein; Output means for taking out a video pack, audio pack or sub-picture pack from the unit, decoding them, outputting them as a video signal and an audio signal, and reproducing the specified program chain; Instruction means for instructing a program chain; and when the next or previous program chain is instructed during reproduction of the designated program chain, the instruction is made with reference to the program chain information. If you have checked for the presence of a program chain, And link means for reproducing the program chain by linking the arm chain, a communication system, characterized in that they are composed of is provided.

In the present invention, a program chain can be changed during reproduction of a program chain based on link information, and another program chain can be selected based on the change. Therefore, a user-friendly environment can be provided, and if necessary, an interactive environment can be provided to the user.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an optical disc and an optical disc reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an optical disc reproducing apparatus for reproducing data from an optical disc according to an embodiment of the present invention, and FIG. 2 is a block diagram of a disc drive unit for driving the optical disc shown in FIG. 3 and FIG. 4 show the structure of the optical desk shown in FIG. 1 and FIG.

As shown in FIG. 1, the optical disk reproducing apparatus comprises:
Key operation / display unit 4, monitor unit 6, and speaker unit 8
Is provided. Here, the user operates the key operation / display unit 4
The recorded data is reproduced from the optical disk 10 by operating. The recording data includes video data, sub-picture data, and audio data, which are converted into a video signal and an audio signal. The monitor unit 6 displays video by a video signal, and the speaker unit 8 generates sound by an audio signal.

As already known, the optical disk 10 has various structures. The optical disk 10 includes, for example, a read-only disk on which data is recorded at a high density, as shown in FIG. As shown in FIG. 3, the optical disk 10 includes a pair of composite layers 18 and an adhesive layer 20 interposed between the composite disk layers 18. Each of the composite disk layers 18 includes a transparent substrate 14 and a recording layer, that is, a light reflecting layer 16. The disk layer 18 is arranged such that the light reflection layer 16 contacts the adhesive layer 20. The optical disc 10 is provided with a center hole 22. Clamping areas 2 for holding the optical disc 10 during rotation are provided around the center holes 22 on both sides thereof.
4 are provided. In the center hole 22, the spindle of the spindle motor 12 shown in FIG. 2 is inserted when the disk 10 is loaded into the optical disk device, and the optical disk 10 is held in its clamping area 24 while the disk is rotated. Clamped.

As shown in FIG. 3, the optical disk 10 is placed around the clamping area 24 on both sides thereof.
Has an information area 25 in which information can be recorded. Each information area 25 has an outer peripheral area defined as a lead-out area 26 where information is not normally recorded, and an inner peripheral area adjacent to the clamping area 24 is similarly defined as a lead-in area 27 where information is not normally recorded. And
A space between the lead-out area 26 and the lead-in area 27 is defined as a data recording area 28.

In the recording layer 16 of the information area 25, usually, tracks are continuously formed in a spiral shape as data recording areas, and the continuous tracks are divided into a plurality of physical sectors. The sectors are numbered consecutively, and data is recorded based on the sectors.
The data recording area 28 of the information recording area 25 is an actual data recording area, and as described later, reproduction information, video data, sub-picture data, and audio data are similarly stored in pits (that is, in a physical state). Change). In the read-only optical disk 10, a pit row is formed in advance on the transparent substrate 14 by a stamper, and a reflective layer is formed by vapor deposition on the surface of the transparent substrate 14 on which the pit row is formed, and the reflective layer is formed as the recording layer 16. Will be done. The read-only optical disk 1
In the case of 0, no groove is usually provided as a track, and a pit row formed on the surface of the transparent substrate 14 is defined as a track.

As shown in FIG. 1, the optical disk device 12 further includes a disk drive unit 30, a system CPU unit 50, a system ROM / RAM unit 52, a system processor unit 54, a data RAM unit 56, and a video decoder unit 58. , An audio decoder section 60, a sub-picture decoder section 62, and a D / A and data reproducing section 64.

As shown in FIG.
Is a motor drive circuit 11, a spindle motor 12,
An optical head 32 (that is, an optical pickup), a feed motor 33, a focus circuit 36, a feed motor drive circuit 37, a tracking circuit 38, a head amplifier 40, and a servo processing circuit 44 are provided. Optical disk 10
Is mounted on a spindle motor 12 driven by a motor drive circuit 11, and is rotated by the spindle motor 12. An optical head 32 for irradiating the optical disk 10 with a laser beam is placed below the optical disk 10. The optical head 32 is mounted on a guide mechanism (not shown). Feed motor drive circuit 3
7 is provided for supplying a drive signal to the feed motor 33. The motor 33 is driven by a drive signal to move the optical head 32 in the radial direction of the optical disc 10. The optical head 32 includes an objective lens 34 facing the optical disc 10. The objective lens 34 is moved along its optical axis in accordance with the drive signal supplied from the focus circuit 36.

In order to reproduce data from the optical disk 10, the optical head 32 irradiates the optical disk 10 with a laser beam via the objective lens 34. The objective lens 34 is finely moved in the radial direction of the optical disc 10 according to the drive signal supplied from the tracking circuit 38.
The objective lens 34 has a focusing circuit 36 such that its focal point is located on the recording layer 16 of the optical disk 10.
Is finely moved along the optical axis direction in accordance with the drive signal supplied from. As a result, the laser beam forms a minimal beam spot on the spiral track (ie, pit train), and the track is tracked by the light beam spot. The laser beam is reflected from the recording layer 16 and the optical head 3
Returned to 2. The optical head 32 converts the light beam reflected from the optical disk 10 into an electric signal, and the electric signal is supplied from the optical head 32 to the servo processing circuit 44 via the head amplifier 40. In the servo processing circuit 44,
A focus signal, a tracking signal, and a motor control signal are generated from the electric signal, and these signals are respectively converted to a focus circuit 36, a tracking circuit 38, and a motor drive circuit 11.
To supply.

Accordingly, the objective lens 34 is moved along its optical axis and the radial direction of the optical disk 10, its focal point is located on the recording layer 16 of the optical disk 10, and the laser beam focuses the minimum beam spot on the spiral track. Form. Further, the spindle motor 12 is rotated at a predetermined rotation speed by the motor drive circuit 11. as a result,
The pit train on the optical disk 10 is tracked by a light beam at a constant linear velocity.

A control signal as an access signal is supplied to the servo processing circuit 44 from the system CPU 50 shown in FIG. In response to this control signal, the servo processing circuit 4
4 supplies a head movement signal to a feed motor drive circuit 37, which converts the drive signal to a feed motor 3
3 will be supplied. Therefore, the feed motor 33
Is driven, and the optical head 32 is moved in the radial direction of the optical disk 10. Then, a predetermined sector formed on the recording layer 16 of the optical disk 10 is accessed by the optical head 32. The reproduced data is reproduced from the predetermined sector, supplied from the optical head 32 to the head amplifier 40, amplified by the head amplifier 40, and output from the disk drive unit 30.

The output reproduced data is stored in the system RO.
The data is stored in the data RAM unit 56 by the system processor unit 54 under the control of the system CPU unit 50 controlled by a program recorded in the M and RAM unit 52. The stored playback data is processed by the system processor unit 54 and classified into video data, audio data, and sub-picture data. The video data, audio data, and sub-picture data are respectively The data is output to the audio decoder section 60 and the sub-picture decoder section 62 and decoded. The decoded video data, audio data, and sub-picture data are converted to a video signal and an audio signal as analog signals by a D / A and reproduction processing circuit 64, and the video signal is transmitted to the monitor 6 and the audio signal. Are supplied to the speaker unit 8 respectively. As a result, video is displayed on the monitor unit 6 by the video signal and the sub-video signal, and sound is reproduced from the speaker unit 8 by the audio signal.

Next, the structure of the logical format of the optical disk device shown in FIG. 1 will be described. At present, the logical format of the optical disk device includes an initial version and a new version obtained by improving the initial version. First, the logical format of the initial version will be described with reference to FIGS. A new version obtained by improving the initial version will be described with reference to FIG. The detailed operation of the optical disk device shown in FIG. 1 will be described later in more detail together with a logical format according to an initial version of the optical disk 10 and a new version obtained by improving the initial version.

The data recording area 28 from the lead-in area 27 to the lead-out area 26 of the optical disk 10 shown in FIG.
It has a volume structure as shown in FIG. This volume structure includes a volume management information area 70 and a file area 80 having a hierarchical structure. The volume management information area 70 contains the ISO966
Logical block numbers 0 to 23 defined based on 0 correspond to the system area 72 and the volume management area 74. Although the contents of the system area 72 are not normally defined as empty areas, the system area 72 is provided, for example, for an editor who edits data to be recorded on the optical disk 10 and realizes driving of the optical disk apparatus according to the editor's intention. A system program for performing the operation is stored as needed. In the volume management area 74, volume management information for managing a file 78 such as a disk information file 76 (hereinafter simply referred to as a disk information file 76) in a file area 80, a movie file or a music file, The file recording position, recording capacity, file name, and the like are stored. In the file area 80, files 76 and 78 from file number 0 to file number 99 designated by logical block numbers 24 and subsequent logical block numbers are arranged, and the file 76 with file number 0 is allocated as a desk information file 76. , File number 1 to file number 99
Are assigned as movie files, that is, video files or music files.

The desk information file 76 comprises a file management information area 82 and a menu video data area 84 as shown in FIG. A possible sequence, that is, file management information for selecting a video or audio title is described. In the menu video data area 84, image data of a menu screen for displaying a selection menu such as a title is stored as a menu data cell 90 in cell units. That is, the menu video data in the menu video data area 84 is divided into units of a required size according to the purpose, as will be described in detail later. It is defined as i menu cells 90 that are numbered consecutively. The menu cell 90 includes video data, sub-video data, and the like for selection of a movie or audio title, selection of a program for each title, and the like.
Alternatively, audio data is stored.

As shown in FIG. 5, the file management information area 82 includes disc configuration information (DSINF: Disc Stru
disc information area 86 for storing the disc information, and a menu structure information (MSINF: Menu Structure).
e Information) menu configuration information area 8
7. Cell information table for storing cell information (MCIT: M
(enu Cell Information Table) 88, which are arranged in this order.

In the disc configuration information area 86, the number of movie files and music files recorded in the file area 80 of the disc 10, ie, the number of playback files 78 (parameter DSINF is described in the range of 1 to 99). ), A sequence (a series of video data including video, audio, sub-picture, etc.) existing in each file 78, which will be described in detail later.
Hereinafter, it is simply referred to as a sequence. ), That is,
Information such as the number of titles (described as a parameter FSINF) is described.

In the menu configuration information area 87, the number of menu cells 90 of the menu video data area 84 recorded in the disc information file 76 (described as the parameter NOMCEL), the titles existing in the disc. The start cell number of the title menu cell 90 constituting a series of menu video data for selecting (described as a parameter TMSCEL)
Etc. are described.

In the menu cell information table 88, cell information necessary for reproducing each menu cell 90 is defined as a set of i cell information areas 89 in which cell information is described in order of cell numbers. If there is no video data for displaying a menu in the file 76, this menu information table is not described. The cell information table 88 includes the position of the cell 90 in the file 76 (parameter MCSLBN).
As a logical block number offset from the beginning of the file. ) And size (described as the number of logical blocks as the parameter MCNLB). Here, the disc configuration information (DSINF) and the menu configuration information (MSINF) are described continuously in the file management information area 82, and the menu cell information table (MCIT) 88 is aligned with the boundary of the logical block.

Music data or movie data of one or more titles is stored in a movie file and a music file 78 corresponding to file numbers 1 to 99. This file 78
6, the file management information area 101 in which the specification information for the data included in the file 78, that is, the management information (for example, the address information and the reproduction control information, etc.) is described, and the file 78 as shown in FIG. Has a file structure including a video data area 102 in which video data (video, audio, sub-video data, and the like are simply referred to as video data) are described. In the video data area 102, video data is divided into cell units in the same manner as the menu cell 90 of the desk information file 76, and the video data is j video data cells 1
05.

Usually, movie data or audio data of a certain title is represented as a set of continuous sequences 106. For example, a movie story
It is represented by a continuous sequence 106 corresponding to “ki”, “sho”, “to” and “katsu”. Therefore, the video data area 102 of each file 78 is defined as a set of sequences 106 as shown in FIG. Also,
Each sequence 106 is represented by a plurality of video programs 107 corresponding to various scenes of the story, and each video program 107 is configured by a plurality of video data cells 105. As shown in FIG. 8, each video cell 105 includes a plurality of groups of one image group (GOP: Group of Picture) in which a control pack (DSI) 92, a main video pack 93, a sub-video pack 95, and an audio pack 98 are combined. It is configured. The configuration of the video cell 105 is substantially the same as that of the menu cell 90, and the video data 102 conforms to the MPEG standard (Moving Picture Expert).
Group)), data such as moving images (movies), audio (audio), and sub-pictures are compressed in MP format.
It is recorded in a data format corresponding to the system layer of EG2. That is, the video data 102 is MP
It is a program streamer defined by the EG standard. Further, each of the packs 92, 93, 95, and 98 has a pack structure including a pack header 97 and a packet 99 corresponding to the pack.

The file management information area 101 includes a file management table (FMT) 11.
3. Sequence information table (SIT: Sequence Inform
ation Table) 114, cell information table (CIT: Cell)
Information Table) 115 and the like.

The video data cells in the video data area 102 are numbered consecutively from # 1 in the order of recording on the disk, and the cell number and information on the cell associated with the cell number are stored in the cell information table 115. It is described in. That is, the cell information table 115 is defined as a set of areas 117 storing j pieces of cell information (CI) describing information necessary for reproducing video data cells in order of cell numbers. ) Describes information such as the position, size, and reproduction time of a cell in the file 78.

FIG. 9 shows the contents of the cell information (CI) stored in the cell information table 115. In the cell information 117, contents such as a start position and a size of a video cell obtained by dividing video data into units according to purposes are described by parameters. That is, this cell information (CI) is
Cell type information (CCAT) indicating the content of the video cell such as whether the video cell is a movie, karaoke, or an interactive menu; cell playback information (CTIME) indicating the total playback time of the video cell; That is, cell start position information (CSL) indicating the start address
BN) and cell size information (CNLB) indicating the size of a video cell.

The sequence information table 114 has i pieces of sequence information (S) describing the order of selecting and reproducing the cells 105 within the range specified for each sequence 106.
I) is defined as a set of areas 116 storing therein, and each sequence information (SI) describes reproduction order and reproduction control information on the reproduction of the video cells 105 recorded in the sequence 106. This sequence 1
06 is a complete type sequence completed in one sequence,
There is a connection-type sequence that is branched and connected to the next sequence for each sequence.
A connection-type head sequence that is a head sequence of video data corresponding to a story and can be branched from this sequence and connected to the next sequence, that is,
The story is connected from the connection-type head sequence that changes in the manner of selection, the connection-type intermediate sequence that is branched from another connection-type sequence and connected to another sequence, and the connection-type sequence ends. There is a connection-type termination sequence in which the story ends in this sequence. The sequence information numbers are defined as sequence numbers 1 to i, and the respective start position information is written in the file management information table 113.

FIG. 10 shows the contents of one sequence information (SI) stored in the sequence information table 114 in the file management information area 101 shown in FIG. As shown in FIG.
16 describes the reproduction order and sequence information of the video cells. The sequence information (SI) number matches the sequence number, and the sequence information table 11
4 are assigned in the order of the numbers. Sequence number 1 is a default reproduction sequence, and it is considered that the arrangement of cells constituting the sequence is desirably continuous in the specified order. The sequence information 116 includes sequence type information (SCAT), sequence playback time (STIME), and connection sequence number information (SNCS).
Q), sequence number list information (SCSQN) and sequence control information (SCINF).
The sequence type information (SCAT) includes a complete type sequence that ends after reproducing one sequence, and a head sequence of video data corresponding to a multi story, which is branched from this sequence and connected to the next sequence. Connection-type sequence that can be connected, a connection-type intermediate sequence that is branched from another connection-type sequence and connected to another sequence, and a connection-type end sequence that is connected from another connection-type sequence and ends that sequence Is described. The sequence type information (SCAT) includes the use of the sequence, ie,
Whether it is a movie, karaoke, or interactive is described. Sequence playback time (STIM
E) describes the total playback time of the sequence,
In the connection sequence number information (SNSQQ), the number of sequences that can be connected to the sequence after reproducing the sequence in the connection type sequence is described. In the sequence number list information (SCSQN), the connection sequence number information (SNCSSQ) is included. The number of connection destination sequences for the described number is described as a list, and further, the sequence control information (SCINF) describes the reproduction order of the cells constituting the sequence, and the cells are reproduced according to this description. The sequence is executed. A section in which one cell is selected from a plurality of cells and reproduced is described by a block as a set of cells, and by specifying the block, the sequence of the block is executed.

File management table (FMT) 113
Indicates specification information on the video file 78. In the file management table 113, as shown in FIG. 11, the file name (FFNAME) and a file identifier (FFID) for identifying whether or not the file can be reproduced by the optical disk reproducing apparatus loaded with the optical disk are described. ing. In the file identifier (FFID), for example, an identifier for identifying a movie file is described. The file management table 113 includes a sequence information table (SI
T) 114 and the start address (FSASSIT, FSACIT) of the cell information table (SIT) 115, the number of sequence information (SI) and cell information (CI) described in each table (FNSQ, FNCEL), and the sequence information The start address (FSAESI) of each sequence 116 and the start address (FS) for starting video data of the video data area 102 are indicated by relative distances from the head of the table (CIT) 114.
ADVD), data attributes and the like as information for reproducing each data are described. Here, the start address (FSASSIT) of the sequence information table 114 includes
The start address of the sequence information table 114 from the beginning of the file 78 to which the file management management table 113 belongs is described by an offset block logical number, and the sequence information start address (FSAESI) contains the sequence information of each sequence information in the sequence information table 114. The start address and its size are described by the number of sequences in the sequence description sequence. The start address is described by an offset byte number from the head of the sequence information table 114.

Next, referring again to FIG. 1, FIGS.
The operation of reproducing movie data from the optical disk 10 having the logical format shown in FIG. FIG.
, Solid arrows between blocks indicate data buses, and broken arrows indicate control buses.

In the optical disk device shown in FIG. 1, when power is turned on, a system ROM and a RAM
From 52, the system CPU unit 50 reads the initial operation program and operates the desk drive unit 30. Therefore, the disk drive unit 30 starts a read operation from the lead-in area 27, and the volume management information area 74 of the volume management area 70 following the lead-in area 27.
The volume management information is read from. That is, the system CPU unit 50 gives a read command to the disk drive unit 30 to read volume management information from the volume management information area 74 recorded at a predetermined position of the disk 10 set in the disk drive unit 30,
The contents of the volume management information are read and temporarily stored in the data RAM unit 56 via the system processor unit 54. The system CPU unit 50 extracts information such as the recording position and recording capacity of each file and other information necessary for management from the data string of the volume management information stored in the data RAM unit 56, Transfer to location and save.

Next, the system CPU unit 50 refers to the information of the recording position and the recording capacity of each file previously acquired from the system ROM & RAM unit 52, and sets the file number 0.
The disk information file 76 corresponding to the number is acquired. That is, the system CPU unit 50 stores the system ROM and the R
A read command is given from the AM unit 52 to the disk drive unit 30 with reference to the information on the recording position and the recording capacity of each file previously obtained, and the file management information of the disk information file 76 having the file number 0 is obtained. Read, via the system processor unit 54, the data RAM unit 56
To be stored. The obtained information is also stored in the system ROM &
The data is transferred to a predetermined location in the RAM unit 52 and stored.

The system CPU unit 50 stores the disk configuration information 8 in the file management information of the disk information file 76.
6. The sequence (title) selection menu of the menu video data 84 is reproduced using the menu configuration information 87 and the cell information table 88, and displayed on the screen as described later.

The user designates the selection of the sequence (title) to be reproduced using the key operation and the display unit 4 based on the selection number written on the displayed menu screen.
As a result, the file number and sequence information to which the selected sequence belongs are specified. In this sequence selection, there are a case where all sequences are selected based on a menu screen, and a case where a head sequence is selected and the next sequence is selected from menu cells included in a video cell at the end of the sequence. The selection of this sequence will be described later in detail.

The specified video file 78 is obtained,
The operation until the reproduction of the video data 102 will be described below. In order to obtain sequence information for the designated sequence number, using the recording position and recording capacity of each video file 78 obtained from the volume management information 74,
First, the video file 7 to which the sequence to be reproduced belongs
8 is read out and stored in the data RAM unit 56 in the same manner as in the disk information file 76 described above.

The system CPU 50 obtains sequence information corresponding to the designated sequence number from the sequence information table 114 of the file management information 101 stored in the data RAM 56, and reproduces the data and the sequence. Information table 11 necessary for
5 is stored in the system ROM & RAM section 52.
Transfer to and store.

The cell information to be reproduced first is obtained from the cell reproduction order information in the sequence information thus obtained, and based on the video data reproduction start address and size in the cell information, the disk drive 30 Is given a read instruction from a target address. The disk drive unit 30 drives the optical disk 10 according to the read command, reads data at a target address from the optical disk 10, and sends the data to the system processor unit 54. The system processor unit 54 temporarily stores the transmitted data in the data RAM unit 56 and determines the type of the data (video, audio, sub-picture, playback information, etc.) based on the header information added to the data. Then, the data is transferred to the decoder units 58, 60, 62 corresponding to the determined type.

Each of the decoders 58, 60 and 62 decodes data according to the respective data format,
/ A & Send to the reproduction processing unit 64. D / A & playback processing unit 64
Converts the decoded digital signal into an analog signal, performs a mixing process, and outputs the result to the monitor unit 6 and the speaker unit 8.

In the process of determining the type of data, if the data is reproduction information indicating the reproduction position of the video data, the reproduction information is not transferred to the decoder, and the reproduction data is stored in the data RAM section. 56. The reproduction information is referred to by the system CPU 50 as needed, and is used for monitoring when reproducing the video data.

When the reproduction of one cell is completed, the cell information to be reproduced next is obtained from the cell reproduction order information in the sequence information, and the reproduction is continued in the same manner.

Next, in this optical disk reproducing apparatus,
FIG. 12 shows the operation of the complete sequence which is a normal sequence.
And a flowchart of FIG.

The user sets the first sequence number (ReqN
When O) is specified, a complete sequence in which a file 78 corresponding to the specified sequence is specified is started. (Step S0) The file management information of the specified file 78 having the file structure shown in FIG. 6 is read from the disk 10 and temporarily stored in the data RAM unit 56 (Step S1). From the file management table (FMT) 113 in the file management information stored in the data RAM unit 56 by the system CPU unit 50, the total number of sequences (FNSQ) and the sequence information table (SI
The start address (FSASIT) of T) and the start address (FSAESI) of each sequence information (SI) are obtained (step S2).

The sequence number (ReqNO) designated by the user in advance is compared with the total number of sequences (FNSQ) to determine whether the sequence is out of the range (step S3). Here, the designated sequence number (ReqN
If O) is a sequence number out of the range, the operation is terminated.

The start address (FSASI) of the sequence information table (SIT) obtained in step S2 from the sequence information table (SIT) in the file management information
T) and the start address (FS) of the sequence information (SI)
AESI), the presence or absence of sequence information (SI) corresponding to the user-specified sequence number (ReqNO) is detected, and the target sequence information (S
I) is obtained (step S4). Here, in the start address (FSASSIT) of the sequence information table 114, the start address of the sequence information table 114 from the beginning of the file 78 to which the file management management table 113 belongs is described by an offset logical block number. Since (FSAESI) describes the start address of each sequence information in the sequence information table 114 by an offset byte number from the head of the sequence information table 114,
The sequence number (ReqNO) is obtained by multiplying the offset logical block number of the start address (FSASSIT) of the sequence information table 114 by 2048 bytes corresponding to one block, and specifying the sequence information start address (FS
AESI) corresponds to the byte obtained by adding the offset byte number. That is, SI (ReqNO) = FS
ASIT * 2048 + FSAESI (ReqNO).

The two addresses (FSASSIT, FS
AESI), parameters in sequence information (SI),
Sequence type (SCAT), number of constituent cells (SNCE)
L), the number of connection sequences (SNCSSQ), the connection destination sequence number (SCSQN), and the sequence control information list (SCINF) are acquired. (Step S5). The sequence type (SCAT) acquired first from this sequence information (SI) is determined (step S26). If the result of the determination is not a complete sequence, the operation is terminated (step S7).

If the sequence is a complete type sequence, the cell number to be reproduced first is extracted from the head of the sequence control information (SCINF) (step S8).

From the cell information table (CIT) 115 in the file management information, the cell information (CI) of the number corresponding to the description order from the cell number to be reproduced first is obtained, and the cell reproduction address information shown in FIG. From the video data area 102 in the file, the system CPU 50
Gives a command to execute read-out reproduction to the optical disk drive unit 30 to reproduce the target video cell (step S9).

When the reproduction of the cell is completed, it is determined whether or not there is a cell to be reproduced next (whether or not it is the last cell) (step S10). Number of cells constituting one sequence (SN
Since CEL) is described as sequence information (SI), it is determined whether or not it is the last cell by determining the cell number of the extracted video cell.

If the extracted video cell is not the last cell, the sequence control information (SCINF)
Next, the cell number to be reproduced is extracted, and step S9 is executed again (step S11).

Further, the operation of the connection type sequence, which is an interactive sequence, in the optical disc reproducing apparatus will be described with reference to the flowcharts shown in FIGS.

When the user sets the first sequence number (ReqN
When O) is specified, a connection type sequence in which a file 78 corresponding to the specified sequence is specified is started (step S12). The file management information of the file 78 designated by the user having the file structure shown in FIG. 6 is read from the disk 10 and temporarily stored in the data RAM unit 56 (step S13). System CPU
From the file management table (FMT) 113 in the file management information stored in the data RAM unit 56 by the unit 50, the total number of sequences (FNSQ) and the sequence information table (S
IT) 114 start address (FSASSIT) and start address (FSAESI) of each sequence information (SI)
Is acquired (step S14).

The sequence number (R
eqNO) and the total number of sequences (FNSQ),
It is determined whether the sequence is out of the range (step S15). Here, the designated sequence number (ReqNO)
If is a sequence number outside the range, the operation is terminated.

From the sequence information table (SIT) in the file management information, the start address (FSAS) of the sequence information table (SIT) obtained in step S14
IT) and the start address (F) of the sequence information (SI)
The presence / absence of sequence information (SI) corresponding to the user-specified sequence number (ReqNO) is detected using the SAESI) parameter, and the target sequence information (S
I) is obtained (step S16). Here, as described above, in the start address (FSASSIT) of the sequence information table 114, the start address of the sequence information table 114 from the beginning of the file 78 to which the file management table 113 belongs is described by an offset logical block number. , The sequence information start address (FSAESI) contains the sequence information table 114
Since the start address of each sequence information in the sequence information is described by an offset byte number from the head of the sequence information table 114, the sequence number (ReqNO) is
Start address (FSA) of the sequence information table 114
This corresponds to a byte obtained by multiplying the offset logical block number of SIT) by 2048 bytes corresponding to one block and adding the offset byte number of the designated sequence information start address (FSAESI). That is, SI
(ReqNO) = FSASIT * 2048 + FSAES
I (ReqNO).

The two addresses (FSASSIT, FS
AESI), parameters in sequence information (SI),
Sequence type (SCAT), number of constituent cells (SNCE)
L), number of connection sequences (SNSQQ), connection destination sequence number (SCSQN), sequence control information (SCI
NF) is obtained (step S17). The sequence type (SCA) obtained from this sequence information (SI)
T) is determined (step S18). If the result of the determination is not the connection-type head sequence (step S19), the steps described later are executed.

If it is the connection type head sequence, a flag for continuing the connection sequence is set (step S2).
0). Then, the cell number to be reproduced first is extracted from the head of the sequence control information (SCINF) (step S21).

From the cell information table (CIT) 115 in the file management information, the cell information (CI) of the number corresponding to the description order from the cell number to be reproduced first is obtained, and from the cell reproduction address information shown in FIG. File 7
From the video data area 102 in 8, the system CPU unit 50 gives the optical disc drive unit 30 a command to execute reading and reproducing to reproduce a target video cell (step S23).

When the reproduction of the cell is completed, it is determined whether or not there is a cell to be reproduced next (whether or not it is the last cell) (step S24). Number of cells constituting one sequence (SN
Since CEL) is described as sequence information (SI), it is determined whether or not it is the last cell by determining the cell number of the extracted video cell.

If the extracted video cell is not the last cell, the sequence control information (SCINF)
Next, a cell number to be reproduced is extracted (step 22).
Step S23 is executed again (step S23).

In step S23, if the extracted video cell is the last cell, the cell information (C
The parameter cell type (CCAT) in I) is checked (step S25). It is determined whether the cell type (CCAT) indicating the content of the last cell is a menu (step S26).

If the last cell corresponds to a menu according to the cell type (CCAT), the system CPU 5
In step S27, the reproduction control is executed, the reproduction is stopped while the menu screen is displayed, and the input of the menu selection from the user is continued (step S27).

When the user performs a key operation and inputs a selection via the display unit 4, the system CPU 50 determines the connection destination sequence number from the connection sequence number (SNCSQ) and the connection destination sequence number (SCSQN). It is specified (step S28). When the number of the connection type sequence is specified, the process returns to step S16, and the reproduction of the target sequence selected by the user on the menu is executed in the above-described process.

If it is determined in step S26 that the last cell is not a menu, processing is performed as shown in FIG.

FIGS. 17 to 19 are flow charts for explaining another connection type sequence. Also,
20 to 25 are an explanatory diagram showing the relationship between the cell information and the sequence information, and a flowchart for explaining the process of creating the cell information and the sequence information.

FIG. 26 shows the structure of the logical format of the optical disk according to the improved version obtained by improving the logical format of the optical disk according to the initial version shown in FIG. FIGS. 27 to 79 show details of the logical format shown in FIG.

In FIG. 33, a program chain for a title set corresponds to a chapter in a story in which the program chain is composed of a plurality of programs, and the program chain is reproduced by continuous reproduction. The title movie is completed. As shown in FIG. 33, each program 289 is defined as a set of cells 284 arranged in the reproduction order. program·
In the reproducing operation of the chain 287, first, a pre-navigation command (PRE) is used as control information necessary for reproducing the program 289 in the program chain 287.
_NV_CMD) 322 is executed, and at the end thereof, the post command 324 is executed. In addition, if necessary, Intercell Navigation Command 3
26 is provided as a cell 284, and necessary reproduction control is executed during reproduction of the program 289. The pre-navigation command 322, the post command 324, and the inter-cell navigation command 326 will be described later in more detail with reference to FIG.

The video manager menu PGCI unit table (VMGM_PGCI_U) shown in FIG.
T) 248, first, as shown in FIG. 34, the video manager menu PGCI unit table information (VM
GM_PGCI_UTI) 250, and then a video manager menu language unit search pointer (VMGM_LU_SRP) 251 corresponding to the number n of languages.
Are described continuously for the required number n, and subsequently a video manager menu language unit (VMGM_LU) 252 searched by the search pointer is described. Here, the video manager menu language unit (VMG
M_LU) has only one PGC
It must be equipped with.

Video manager menu PGCI unit table information (VMGM_PGCI_UTI) 25
0, the number of VMGM language units (VMGM_LU) (VMGM_LU_Ns) and the VMGM_PGCI unit table (VMGM_PG) as shown in FIG.
CI_UT) 280 end address (VMGM_PGC)
I_UT_EA). As shown in FIG. 36, each of the n video manager menu language unit search pointers (VMGM_LU_SRP) 251 prepared for each language has a language code (VMGM_LCD) and a video manager menu (VMGM) language unit of the video manager menu. (VMGM_
LU) 252 start address (VMGM_LU_SA)
Is described. End address (VMGM_PGCI_UT_EA) of VMGM_PGCI_UT 280 and start address (VMGM_LU) of VMGM_LU 252
_SA) is described by a logical block number from the first byte of the VMGM_PGCI unit table (VMGM_PGCI_UT) 280.

Each of the n VMGM language units (VMGM_LU) 252 prepared for each language is shown in FIG.
As shown in FIG. 7, a video manager menu language unit information (VMGM_LUI) 253 and VMGM_PGCI search pointers (VMGM_PGCI_SRP) as many as the number of menu program chains are provided, and VMGM_PGC information (VMGM_PGCI) 255 searched by this search pointer is the same There are as many menu program chains as there are menus.

Each language unit information (VMGM_LUI)
253 includes VMGM_PGC as shown in FIG.
I (VMGM_PGCI_Ns) and the ending address (VMGM_L) of the language unit information (VMGM_LUI)
LUI_EA) is described. In addition, each VMGM_
PGCI search pointer (VMGM_PGCI_SR
P) includes a VMGM_PGC category (VMGM_PGC_CAT) and a VMGM_PG as shown in FIG.
CI start address (VMGM_PGCI_SA)
Is described. The end address of VMGM_LUI (VMGM_LUI_EA) and the start address of VMGM_PGCI (VMGM_PGCI_SA) are V
It is described by a logical block number relative to the first byte of MGM_LU. VMGM_PGC category (V
MGM_PGC_CAT)
Whether the chain is an entry program chain,
In addition, whether the menu is a title menu or the like is described.

The video title set (VT) shown in FIG.
S) The video title set attribute table (VTS_ATRT) 280 in which the attribute information of 272 is described, as shown in FIG.
TS_ATRTI) 266, n video title set attribute search pointers (VTS_ATR_SRP) 26
7 and n video title set attributes (VTS_AT
R) 268, and are described in that order.
Video title set attribute table information (VTS_AT
RTI) 266 describes the information of this table 280, and stores the video title set attribute search pointer (VT).
S_ATR_SRP) 267 is described in the order corresponding to the title sets from # 1 to #n, and similarly
Video title set attributes (VTS_ATR) 26 described in the order corresponding to the title sets from # to #n
8 is described. Also, a video title set attribute (VTS_ATR) 26
8 describes the attribute of the corresponding title set (VTS).

More specifically, the video title set attribute table information (VTS_ATRTI) 266 includes FIG.
As shown in FIG. 1, the number of video titles is a parameter (VT).
S_Ns), and the end address of the video title set attribute table (VTS_ATRT) 280 is described as a parameter (VTS_ATRT_EA). As shown in FIG. 42, each video title set attribute search pointer (VTS_ATR_SR
P) 267 describes the start address of the corresponding video title set attribute (VTS_ATR) 68 as a parameter (VTS_ATR_SA). Further, a video title set attribute (VTS_ATR) 26
8, the end address of the video title set attribute (VTS_ATR) 268 is described as a parameter (VTS_ATR_EA), and the category of the corresponding video title set is a parameter (V
TS_CAT). Furthermore, the video title set attribute (VTS_ATR) 268 includes
The attribute information of the corresponding video title set is described as a parameter (VTS_ATRI). The attribute information of this video title set will be described later with reference to FIGS.
, The same contents as the attribute information of the video title set described in the video title set information management table (VTS_MAT) described with reference to, will be omitted.

Next, the structure of the logical format of the video title set (VTS) 272 shown in FIG. 27 will be described with reference to FIG. In each video title set (VTS) 272, four items 294, 295, 296, and 297 are described in the order of description as shown in FIG. Each video title set (VTS) 2
Reference numeral 72 denotes one or more video titles having a common attribute, and management information about the video title 272, for example, the video object set 29
For playing back the title set menu (VT
SM) and the attribute information of the video object set 272 are video title set information (VT).
SI).

The video title set information (VTS
I) A backup 297 of 294 is provided in a video title set (VTS) 272. Between the video title set information (VTSI) 294 and the backup (VTSI_BUP) 297 of this information, a video object set (V
TSM_VOBS) 295 and video object set for video title set title (VTSTT_V)
OBS) 296 is located. Any video object set (VTSM_VOBS and VTSTT_
VOBS) 295 and 296 have the structure shown in FIG.

Video title set information (VTSI) 2
94, backup of this information (VTSI_BUP) 2
97 and a video object set for video title set title (VTSTT_VOBS) 296 are required items for the video title set 272, and a video object set for video title set menu (VTSM_VOBS) 295 is an option provided as necessary. ing.

Video title set information (VTSI) 2
94 includes seven tables 298, 2 as shown in FIG.
99, 300, 301, 311, 312, and 313. These seven tables 298, 299, 300,
Reference numerals 301, 311, 312, and 313 coincide with boundaries between logical sectors.

The video title set information management table (VTSI_MAT) 298, which is the first table, is an indispensable table, and is a video title set (VTS).
272 size, video title set (VTS) 27
2 and the video object set (VO) in the video title set (VTS) 272.
BS) 282 are described.

The second table, a video title set part of title search pointer table (VTS)
_PTT_SRPT) 299 is an indispensable table and is included in the video title set 272 that can be selected according to the number input by the user from the key operation / display unit 4 of the apparatus, that is, the selectable video title set 272. A program chain (PGC) and / or program (PG) is described. The user can use the optical disk 1
When an arbitrary number among the input numbers described in the pamphlet is designated by the key operation / display unit 4 along with the distribution of 0, the video can be watched from the part in the story corresponding to the input number. This selectable title part can be arbitrarily determined by the title provider.

A third table, a video title set program chain information table (VTS_PGC)
The IT) 300 is an indispensable table that describes information on a VTS program chain, that is, VTS program chain information (VTS_PGCI).

A fourth table, a video title set menu PGCI unit table (VTSM_PG)
CI_UT) 311 is a video object set (VTSM_VOBS) for a video title set menu.
95 is a mandatory item when a video title set menu (VTS) is provided for each language.
Information about a program chain for reproducing M) is described. This video title set menu PGCI unit table (VTSM_PGCI_
By referring to the (UT) 311, a program chain of a specified language in the video object set (VTSM_VOBS) 295 can be acquired and reproduced as a menu.

Video title set time search map table (VTS_MAPT) 3 which is the fifth table
Reference numeral 01 denotes an optional table provided as needed, which relates to a recording position of video data in each program chain (PGC) of the title set 272 to which the map table (VTS_MAPT) 301 belongs for a certain period of reproduction and display. Information is described.

The video title set cell address table (VTS_C_ADT) 3 which is the sixth table
Numeral 12 is an indispensable item, and as shown in FIG. 28, addresses of the cells 284 constituting all the video objects 283 or addresses of cell pieces constituting the cells are described in the order of the identification numbers of the video objects.
Here, the cell piece is a piece constituting the cell, and the cells are arranged in the video object 283 by performing an interleaving process based on the cell piece.

The seventh table, video title set / video object / unit address map (V
TS_VOBU_ADMAP) 313 is a required item, and the start addresses of the video object units 85 in the video title set are all described in the arrangement order.

Next, a video title information manager table (VTSI_MAT) 298, a video title set part of title search pointer table (VTS_PTT_SRPT) 299, and a video title set program chain information table (VTS_PGCIT) 300 shown in FIG. And video title set menu PGCI unit table (VTSM_P
The GCI_UT) 311 will be described with reference to FIGS.

FIG. 45 shows the description contents of the video title information manager table (VTSI_MAT) 298. This table (VTIS_MAT) 298 contains video title set identifiers (VTS_I
D), the size of the video title set 272 (VTS_
SZ), the version number of this DVD video standard (VE
RN), video title set 272 category (V
TS_CAT) and the video title set information manager table (VTSI_MAT).
298 end address (VTSI_MAT_EA).

This table (VTSI_MAT)
298 includes a start address (VTSM_VOBS_SA) of a video object set (VTSM_VOBS) 295 of a VTS menu (VTSM) and a start address (VTSTT_VOB_S) of a video object for a title in a video title set (VTS).
The start address of A) is described. Video object set (VTSM_) of the VT menu (VTSM)
If there is no VOBS) 295, the start address (VTSM_VOBS_SA) contains “00000000”.
0h "is described. The VTSI_MAT end address (VTSI_MAT_EA) is described by the relative number of blocks from the first byte of the video title set information management table (VTI_MAT) 294, and VTSM_VOB is described.
S start address (VTSM_VOBS_SA) and V
Start address of TSTT_VOB (VTSTT_VOB
_SA) is the video title set (VTS) 27
2 relative logical blocks from the first logical block (RL
BN).

Further, this table (VTSI_MAT)
298 includes a video title set part of title search pointer table (VTS_PTT_SRP).
T) 299 start address (VTS_PTT_SR)
PT_SA) is the video title set information (VTSI)
294 is described as the number of relative blocks from the first logical block. This table (VTSI_MAT)
298, the start address (VTS_PGCIT_SA) of the video title set program chain information table (VTS_PGCIT) 300 and the start address (VTS_PGCI_UT_SA) of the PGCI unit table (VTS_PGCI_UT) 311 for the video title set menu are stored in the video title set information (VTS_PGCI_UT_SA). VTSI) 294 is described in the relative number of blocks from the first logical block, and the video title set (VTS) time search map table (VTS_M)
APT) start address (VTS_MAPT) 301
_SA) is the video title set (VTS) 272
Is described as a logical sector relative to the first logical sector.
Similarly, a VTS address table (VTS_C_AD)
T) 312 and VTS_VOBU address map (V
TS_VOBU_ADMAP) 313 is described as a logical sector relative to the first logical sector of the video title set (VTS) 272.

This table (VTSI_MAT) 298
Includes a video attribute (VTSM_V_ATR) of a video object set (VTSM_VOBS) 295 for a video title set menu (VTSM) in a video title set (VTS) 272, the number of audio streams (VTSM_AST_Ns) and its audio stream attributes (VTSM_AST_ATR), The number of sub-video streams (VTSM_SPST_Ns) and its sub-video stream attributes (VTSM_SPST_ATR) are described. Similarly, this table (VTSI_MA
T) 298 includes a video title set (VTS) 72
Video title set (VTS) title (VT
Video object set (VTST_
VOBS) 296 video attribute (VTS_V_AT)
R), the number of audio streams (VTS_AST_N)
s) and its audio stream attribute (VTS_A)
ST_ATR), number of sub-picture streams (VTS_SPS)
T_Ns) and its sub-picture stream attribute (VTS_S)
PST_ATR) is described. Further, the attribute (VTS_MU_AST_ATR) of the multi-channel audio stream of the video title set (VTS) is described in this table (VTSI_MAT) 298.

As for the audio stream, a maximum of 8
A stream is prepared, and a maximum of 32 sub-image streams are prepared. An attribute is described for each stream. The sub-picture stream attribute (VTS_SPST_ATR) describes whether or not the type of the sub-picture is language.

The video title set shown in FIG.
Part of title search pointer table (VTS
_PTT_SRPT) 299 has the structure shown in FIG. That is, as shown in FIG.
TS_PTT_SRPT) 299 describes three items, the first item describes part-of-title search pointer table information (PTT_SRPTI) 321, and the second item describes n title units #
n search pointer (TTU_SRP # n) 323 is described, and the third item is title unit #n (TTU_SRP # n).
#N) 327 describes a title search pointer #m (PTT_SRP # m) 325 for m input numbers #m. The part-of-title search pointer table information (PTT_SRPTI) 321 includes FIG.
As shown in FIG. 7, the number of title search pointers (VTS_TTU_Ns) in the video title set (VTS) is described, and its table (VTS_PTT_SRPT) is described.
299 last address (VTS_PTT_SRPT_E
A) is described. The maximum number of title search pointers (VTS_TTU_Ns) is 99.
Also, the final address (VTS_PTT_SRPT_E
A) is described by the relative number of logical blocks from the first byte of this VTS_PTT_SRPT. Title unit #n search pointer (TTU_SRP # n) 323
Has a title search pointer #m as shown in FIG.
A start address (TTU_SA) of a title unit (TTU) which is a set of (PTT_SRP # m) is described. This start address (TTU_SA) is the first title search pointer # 1 (PTT_SRP # m) 3
This corresponds to 25 start addresses. This start address (TTU_SA) is likewise the VTS_PTT
Described in the relative number of logical blocks from the first byte of _SRPT. Further, the title search pointer #m (PT
T_SRP # m) 325 describes a search pointer #m designated by this search pointer, a program chain number (PGC_N) and a program number (PG_N), as shown in FIG.

The VTS program chain information table (VTS_PGCIT) 300 shown in FIG. 44 has a structure as shown in FIG. This information table (VTS_PGCIT) 300 includes information (VTS_PGC) related to the VTS program chain (VTS_PGC).
PGCI) is described, and information (VTS_PG) of the information table (VTS_PGCIT) 300 relating to the VTS program chain (VTS_PGC) is described as the first item.
CIT_I) 302 is provided. This information (VT
Following the (S_PGCIT_I) 302, the information table (VTS_PGCIT) 300 includes the VTS program / code in the information table (VTS_PGCIT) 300.
VTS_PGCI search pointer (VTS_PG) for searching VTS program chains (VTS_PGC) by the number (# 1 to #n) of chains (VTS_PGC)
CIT_SRP) 303, and finally a number (#) corresponding to the VTS program chain (VTS_PGC).
1 to #n) for each VTS program chain (VT
Information (VTS_PGCI) 304 regarding S_PGC)
Is provided.

Information (VTS_PGC) of VTS program chain information table (VTS_PGCIT) 300
IT_I) 302 includes a VTS as shown in FIG.
Number of program chains (VTS_PGC) (VTS
_PGC_Ns) is described as the content, and the end address (VTS_PGCIT_EA) of the table information (VTS_PGCIT_I) 302 is described by the relative number of bytes from the first byte of the information table (VTS_PGCIT) 300.

The VTS_PGCIT search pointer (VTS_PGCIT_SRP) 303 includes, as shown in FIG. 52, the category (VTS_PGC_CAT) of the program chain (VTS_PGC) of the video title set (VTS) 272 and the VTS_PGC information table (VTS_PGCIT) 300 VTS_PGC information (VTS_PGC information) is represented by the relative number of bytes from the first byte.
PGCI) start address (VTS_PGCI_S)
A) is described. Here, in the VTS_PGC category (VTS_PGC_CAT), for example, whether or not an entry program chain (entry PGC) is reproduced first and a type of application field of the program chain are described as a category. Usually, an entry program chain (PGC) is described before a program chain (PGC) that is not an entry program chain (PGC).

PGC information (VTS) provided for each PGC
_PGCI) 304 describes five items as shown in FIG. This PGC information (VTS_PGC
In I) 304, first, program chain general information (PGC_GI) 305 of a required item is described, followed by an optional program chain navigation command table (PGC_NV_CMD).
T) 309. In addition, navigation
Following the command table (PGC_NV_CMDT) 309, three items 306, 307, and 308 that are required only when there is a video object are described. That is, a program chain program map (PGC_PGMAP) 306, a cell reproduction information table (C_PBIT) 307, and a cell position information table (C_POSIT) 308 are described in the PGC information (VTS_PGCI) 304 as the three items.

Program chain general information (PGC_
GI) 305 includes a program chain (PGC) category (PGCI_CAT) as shown in FIG.
Program chain (PGC) contents (PGC_CN
T) and the playback time (PGC_PB_TIME) of the program chain (PGC).

PGC category (PGCI_CAT)
In the case where the PGC is a menu PGC, whether the PGC is an entry PGC and a menu ID are described. Here, a VM for displaying or selecting a title without specifying a menu by a menu ID
GTS title menu, VTS for selecting sub-pictures
One of the sub-picture menu for VTS, the VTS audio menu for selecting audio, and the VTS menu for displaying or selecting a program is specified. Therefore, the contents of the program chain (PGC) (PGC_
The type of menu can be specified with reference to (CNT). The PGC category (PGCI_CAT)
When the PGC is a title PGC, the block mode of the PGC, the block type of the PGC, whether the PGC can be copied, and whether the reproduction of the program in the PGC is continuous or random. or not,
The type of application of the program chain is described. Here, the PGC block mode includes the PGC
Is not the PGC in the block, and if the PGC is the PGC in the block, it is the first PGC,
Either the last PGC or the PGC in the block is described. The PGC block type describes that the PGC is not a part of the block or that the PGC belongs to a specific block.

The contents of the PGC (PGC_CNT) describe the contents of the structure of this program chain, that is, the number of programs, the number of cells, and the like. PGC playback time (PG
C_PB_TIME) describes the total playback time of the program in the PGC. This playback time is
The reproduction time of the program when the program in the PGC is continuously reproduced regardless of the reproduction procedure is described.

Program chain general information (PGC_
GI) 305 further includes a PGC user operation control (PGC_UOP_CTL) as shown in FIG.
PGC sub-picture stream control (PGC_SPST_CT
L), PGC audio stream control (PGC_AS)
T_CTL) and PGC navigation control (PGC_
NV_CTL) is described. PGC user operation control (PGC_UOP_CTL) includes PG
User operations prohibited during playback of C are described. The prohibited operations include a menu call or a change of a sub-picture or audio stream. PGC sub-picture stream control (PG
C_SPST_CTL) describes a sub-video stream number usable in the PGC, and PGC audio stream control (PGC_AST_CTL) describes
Similarly, an audio stream number usable in the PGC is described. PGC navigation control (PG
C_NV_CTL), as shown in FIG. 55, is described in 8 bytes, that is, bit numbers b0 to b63. In the bit numbers b48 to b62, the next PGC number to be reproduced next is described. In the bit numbers b32 to b46, the previous PGC number to be reproduced immediately before the PGC concerned, and in the bit numbers b16 to b30, ,
The destination PGC number to be returned after the reproduction of the PGC and the bit numbers b8 to b15 include a loop total sum and a bit number b0 indicating the number of times the reproduction of the PGC is repeated.
To b7 describe the value of the stationary time. In FIG. 55, bit numbers b63, b47, and b31 are reserved. If there is no next PGC number, previous PGC number and destination PGC number, zero is described in the corresponding bit number. If there is no loop, zero is described in the bit number corresponding to the loop total, and if it continues indefinitely, all “1” s are described. Further, when there is no stillness, zero is described in the bit number corresponding to the value of the stillness time, and when the stillness continues indefinitely, all “1” s are described.

PGCs are successively reproduced by using the description contents of the PGC navigation control (PGC_NV_CTL) shown in FIG. That is, when “next” is instructed by the user through the key operation and the operation unit 4, or when the PGC number of the destination is not specified by the navigation command described later,
As the PGC to be reproduced next, bit numbers b48 to b6
The next PGC number described in No. 2 is used. Also, when “previous” is instructed by the key operation and the operation unit 4 by the user, the bit number b3 is set as the PGC to be reproduced next.
The PGC number before the description is used from 2 to b46. Further, when “Go Up” is instructed by the user through the key operation and the operation unit 4, the destination PGC number described in the bit numbers b16 to b30 is used as the PGC to be reproduced next.

Program chain general information (PGC_
The GI) 305 further includes a sub-picture palette (PGC_SP_PLT) in the PGC and a PGC navigation command table 309 (PGC_NV_
Start address (PGC_NV_CMD) of the CMDT
T_SA), PGC program map (PGC_PGM)
AP) 306 start address (PGC_PGMAP)
_SA), cell reproduction information table (C_PBIT) 30
7 are described, and the start address (C_POSIT_SA) of the cell position information table (C_POSIT) 308 is described.
The sub-image palette (PGC_SP_PLT) describes the color palette of all sub-images in the PGC. The color palette is provided in 16 sets. PGC_NV command table (PGC_NV_C
MDT) 309, PGC program map (PGC_P
GMAP) 306, cell reproduction information table (C_PBI)
T) 307 and a cell position information table (C_POSI)
The start address of T) 308 is described by the number of relative logical blocks from the first byte of the PGC information.
If there is no cell reproduction information table (C_PBIT) 307 and cell position information table (C_POSIT) 308, zero is described in the start address.

The PGC navigation shown in FIG.
Command table (PGC_NV_CMDT) 309
Describes information on the navigation command shown in FIG. That is, the PGC navigation command table (PGC_NV_CMDT) 309
Has a structure as shown in FIG. 56 and is composed of four items. First, this table (PG
Program chain navigation command table information (PGC_NV_CMDTI) 320 in which information of C_NV_CMDT 309 is described. Second, zero or more pre-process navigation commands (PRE_NV_CM)
D) 322 is described, thirdly, zero or more post process navigation commands (POST_NV_CMD) 324 are described, and fourthly, zero or more inter-process navigation commands (POST_NV_CMD) 324 are described. A cell navigation command (IC_NV_CMD) 326 is described. These commands (PRE_NV_C
MD) 322, (POST_NV_CMD) 324,
(IC_NV_CMD) 326 is assigned command numbers #i, #j, and #k in the order of description. Also, the total sum (i + j + k) of these commands is set to 128 or less.

[0114] Program chain navigation
Command table information (PGC_NV_CMDTI) 3
20, the start address (PRE_NV_CMD_SA) of the PRE_NV command (PRE_NV_CMD) 322, the start address (POST_NV_CMD_SA) of the POST_NV command (POST_NV_CMD) 324, and IC_N as shown in FIG.
The start address (IC_NV_CMD_SA) of the V command (IC_NV_CMD) 326 is described by the relative number of logical blocks from the first byte of the PGC_NV command table (PGC_NV_CMDT) 309. These commands (PRE_NV_CMD) 32
2, (POST_NV_CMD) 324 (IC_NV_
If each of the CMDs 326 does not exist, the corresponding start address (PRE_NV_CMD_SA, P
OST_NV_CMD_SA, IC_NV_CMD_S
In A), zero is described. In addition, these navigation commands (PRE_NV_CMD) 322,
(POST_NV_CMD) 324, (IC_NV_C)
The MD) 326 describes the contents of a pre-process navigation command, a post-process navigation command, and an inter-cell navigation command as shown in FIGS. 58, 59 and 60, respectively.

These navigation commands (PRE
_NV_CMD) 322, (POST_NV_CMD)
324 and (IC_NV_CMD) 326 describe a link command, a jump command, a comparison command, ie, a compare command, a go-to command, and the like, and various reproduction operations are executed by a combination of these. If a link command is described, the playback target (Presenta
is linked to a particular program chain, a particular program or a particular cell. Similarly, when a jump command is described, the playback target is jumped to a specific title set, a specific part of the title set, or a specific program chain of the specific title set. When a comparison command is described, a value set in a register or the like during a reproduction operation according to a user selection is compared with a value set at the start of reproduction as a navigation parameter, and another command is executed. . If the go-to command is described, another navigation command is executed or the execution of the navigation command is stopped. A specific example of the reproduction using the navigation command will be described later together with the operation of reproducing the video data.

PGC information (VTS_PGC) shown in FIG.
The program chain program map (PGC_PGMAP) 306 of I) 304 is a map showing the configuration of the program in the PGC as shown in FIG. In this map (PGC_PGMAP) 306, as shown in FIG. 62, entry cell numbers (ECELLN), which are program start cell numbers, are described in ascending order of cell numbers. Also, program numbers are assigned from 1 in the order of description of entry cell numbers. Therefore, the first entry cell number of this map (PGC_PGMAP) 306 must be # 1.

Cell playback information table (C_PBIT) 3
07 defines the PGC cell playback order. In the cell reproduction information table (C_PBIT) 307, cell reproduction information (C_PBIT) is continuously described as shown in FIG. Basically, the cells are reproduced in the order of their cell numbers. Cell playback information (C_PB
IT) includes cell reproduction information (P) as shown in FIG.
_PBI) describes a cell category (C_CAT). The cell category (C_CAT) includes a cell block mode indicating whether a cell is a cell in a cell block, or if the cell is a cell in a cell block, the first cell. No or
Cell block type indicating whether the block is an angle block,
An STC discontinuity flag indicating whether the system time clock (STC) needs to be reset, a cell playback mode, cell navigation control, and an inter-cell command number are described. Here, a cell block is defined as a set of cells at a specific angle. The angle can be changed by changing the cell block. That is, in the case of baseball as an example, a change from an angle block capturing a scene from the outfield to an angle block capturing a scene from the infield corresponds to a change in the angle. In the cell playback mode, it is described whether continuous playback is performed in the cell or the video object unit (VOBU) in the cell is stopped. In cell navigation control, after the playback of the cell is performed. Information about stationary is described. That is, the cell navigation control is not stationary,
It is described that the infinite time and the infinite time are not specified. In the intercell command number, the PGC_NV_CMD table (PGC_NV_CMDT) 309 includes an intercell navigation command to be executed when the cell reproduction is completed.
It is described by the NV_CMD number 326. By referring to the PGC_NV_CMD number 326 during cell playback, the PGC_NV command (PGC_NV_
CMD) is obtained, and the command is executed after the cell described in the cell reproduction information (P_PBI) is reproduced.

Further, as shown in FIG. 64, the reproduction information (P_PB) of the cell reproduction information table (C_PBIT) 307 is
I) includes a cell playback time (C_PBTM) describing the entire playback time of the PGC. When the angle cell block is in the PGC, the reproduction time of the angle cell number 1 indicates the reproduction time of the angle block. Further, a cell reproduction information table (C_PBIT) 30
7, the start address (C_FVOBU_SA) of the head video object unit (VOBU) 285 in the cell is described by the number of logical blocks relative to the head logical block of the video object unit (VOBU) 285 in which the cell is recorded. And the video object unit (VOB) in which the cell is recorded
U) The final video object unit (V) in the cell is determined by the number of logical blocks relative to the first logical block of 285.
OBU) 285 start address (C_LVOBU_
SA) is described.

Cell position information table (C_POSI) 3
08 specifies the identification number (VOB_ID) of the video object (VOB) of the cell and the identification number (C_ID) of the cell used in the PGC. The cell position information table (C_POSI) 30 corresponding to the cell number described in the cell reproduction information table (C_PBIT) 307 as shown in FIG.
8 are described in the same order as the cell reproduction information table (C_PBIT). The cell position information (C_POSI) includes the identification number (C_VOB_ID) of the video object unit (VOBU) 285 of the cell as shown in FIG.
N) and a cell identification number (C_IDN).

Further, the video title set PGCI unit table (VTSM_PGCI_U) shown in FIG.
The structure of T) 311 will be described with reference to FIGS. Video title set PGC shown in FIG.
I unit table (VTSM_PGCI_UT) 31
1 has substantially the same structure as the VMGM_PGCI unit table 280 shown in FIG. That is, VMG
M_PGCI unit table (VTSM_PGCI_
The UT) 311 initially contains VTS menu PGCI unit table information (VTSM_PG) as shown in FIG.
CI_UTI) 350, and then the VTS menu language unit search pointer (V
MGM_LU_SRP) 351 are continuously described by the required number n, and subsequently the VTS searched by the search pointer
A menu language unit (VTSM_LU) 352 is described.

The VTS menu PGCI unit table information (VMGM_PGCI_UTI) 350 includes FIG.
As shown in FIG. 8, the VTSM language unit (VTSM_
LU) (VTSM_LU_Ns) and VTSM_P
GCI unit table (VMGM_PGCI_UT)
311 end address (VTSM_PGCI_UT_E
A) is described. Each of the n video manager menu language unit search pointers (VTSM_LU_SRP) 351 prepared for each language is shown in FIG.
As shown in FIG. 9, the language code of the VTS menu (VTSM
_LCD) and the start address (VTSM) of the VTS menu (VTSM) language unit (VTSM_LU) 252
_LU_SA) is described. VTSM_PGCI
_UT280 end address (VTSM_PGCI_U
T_EA) and the start address (VTSM_LU_SA) of the VTSM_LU 352 are the VTSM_PGCI
Unit table (VTSM_PGCI_UT) 311
Is described by the logical block number from the first block of.

Each of the n VTSM language units (VTSM_LU) 352 prepared for each language is shown in FIG.
0, the VTS menu language unit information (VT
SM_LUI) 353, VTSM_PGCI search pointers (VT) as many as the number of menu program chains.
SM_PGCI_SRP) 354 is provided, and VTSM_PGC information (V
Similarly, TSM_PGCI) 355 are provided for the number of program chains for the menu.

Each language unit information (VTSM_LUI)
353 includes VMGM_PGC as shown in FIG.
I (VMGM_PGCI_Ns) and end address (VTSM_L) of language unit information (VTSM_LUI)
LUI_EA) is described. Also, each VTSM_
PGCI search pointer (VTSM_PGCI_SR
P) includes a VTSM_PGC category (VTSM_PGC_CAT) and a VTSM_PG as shown in FIG.
CI start address (VTSM_PGCI_SA)
Is described. The end address of VTSM_LUI (VTSM_LUI_EA) and the start address of VTSM_PGCI (VTSM_PGCI_SA) are
It is described by a logical block number relative to the first byte of TSM_LU. VTSM_PGC category (V
TSM_PGC_CAT)
Whether the chain is an entry program chain,
In addition, whether the menu is a title menu or the like is described.

As described with reference to FIG.
4 is a video object unit (VOBU) 285
Of video object units (VOB)
U) 285 is defined as a pack sequence starting with a navigation (NV) pack 286. Therefore, cell 28
4 first video object unit (VOBU)
285 start address (C_FVOBU_SA)
Represents the start address of the NV pack 286. As shown in FIG. 73, the NV pack 286 has a structure including a pack header 310, a system header 311 and two packets as navigation data, that is, a playback control information (PCI) packet 116 and a data search information (DSI) packet 117. FIG. 73
The number of bytes as shown in FIG. 3 is assigned to each part, and one pack is defined as 2048 bytes corresponding to one logical sector. The NV pack is arranged immediately before the video pack including the first data in the group of picture (GOP). Object unit 2
Even if 85 does not include a video pack, an NV pack is placed at the head of an object unit including an audio pack and / or a sub-picture pack. As described above, even when the object unit does not include the video pack, the reproduction time of the object unit is determined based on the unit in which the video is reproduced, as in the case where the object unit includes the video pack.

Here, the GOP is defined by the MPEG standard and is defined as a data string constituting a plurality of screens as described above. That is, a GOP corresponds to compressed data, and when this compressed data is expanded, image data of a plurality of frames from which a moving image can be reproduced is reproduced. Pack header 310 and system header 311
Is defined by an MPEG2 system layer, a pack header 310 stores a pack start code, a system clock reference (SCR), and information on a multiplexing rate, and a system header 311 describes a bit rate and a stream ID. ing. Packet headers 312 and 31 of PCI packet 316 and DSI packet 317
4, a packet start code, a packet length, and a stream ID are stored as defined in the MPEG2 system layer.

Other video, audio, sub-picture pack 2
88, 289, 280, and 291 are composed of a pack header 120, a packet header 121, and a packet 322 in which corresponding data is stored as in the case of the MPEG2 system layer as shown in FIG. , 2048 bytes. Each of these packs is aligned with a logical block boundary.

The PCI data (P
CI) 313 is presentation data, that is, navigation data for changing display contents, in synchronization with the playback state of video data in the VOB unit (VOBU) 285. That is, as shown in FIG. 75, the PCI data (PCI) 313 includes PCI general information (PCI_GI) as information of the entire PCI and angle information (N) as each jump angle information at the time of angle change.
SMLS_ANGLI) is described. As shown in FIG. 76, the PCI general information (PCI_GI)
The address (NV_PCK_LBN) of the NV pack (NV_PCK) 286 where the PCI 313 is recorded is described by the relative number of logical blocks from the logical block of the VOBU 285 where the CI 313 is recorded. VOBU2 is included in the PCI general information (PCI_GI).
85 categories (VOBU_CAT), VOBU28
5, a start reproduction time (VOBU_S_PTM) and a reproduction end time (VOBU_EPTM) are described.
Here, the start PTS of VOBU 285 (VOBU_VOBU_
SPTS) is the VOBU2 in which the PCI 313 is included.
85 shows the playback start time (start presentation time) of the video data. This playback start time is the first playback start time in the VOBU 285.
Normally, the first picture corresponds to the playback start time of an I picture (Intra-Picture) in the MPEG standard. End PTS of VOBU85 (VOBU_EPT
S) indicates the playback end time (end presentation time) of the VOBU 285 including the PCI 313.

D in DSI packet 317 shown in FIG.
The SI data (DSI) 315 is a VOB unit (VO
BU) 285 is navigation data for executing the search. The DSI data (DSI) 315 includes FIG.
As shown in FIG. 7, DSI general information (DSI_GI), seamless reproduction information (SML_PBI), angle information (S
ML_AGLI), navigation pack address information (NV_PCK_ADI), and synchronous reproduction information (SYN).
CI) is described.

The DSI general information (DSI_GI) describes the information of the entire DSI data 315. That is, as shown in FIG. 78, the DSI general information (DSI_G
In I), a system time reference value (NV_PCK_SCR) of the NV pack 86 is described. This system time reference value (NV_PCK_SCR) is shown in FIG.
Are stored in a system time clock (STC) incorporated in each section shown in FIG. 1, and the video, audio and sub-picture packs are decoded by the video, audio and sub-picture decoder sections 58, 60 and 62 based on this STC, The sound is reproduced by the monitor unit 6 and the speaker unit 8. The DSI general information (DSI_GI) includes DSI31
5 is recorded as the relative number of logical blocks (RLS) from the first logical block of the VOB set (VOBS) 282 in which
N), an NV pack (NV) in which the DSI 315 is recorded.
_PCK) 286 start address (NV_PCK_
LBN), and the relative number of logical blocks (RLS) from the first logical block of the VOB unit (VOBU).
N), the address (VOB) of the last pack in the VOB unit (VOBU) 285 in which the DSI 315 is recorded.
U_EA).

Further, in the DSI general information (DSI_GI), the VOB unit (V
A V pack (V_PC) in which the last address of the first I picture in this VOBU is recorded by the relative number of logical sectors (RLSN) from the first logical sector of the OBU)
K) VOBU in which the end address (VOBU_IP_EA) of 288 is described and the DSI 315 is recorded
283 (VOBU_IP_IDN) and the identification number (VOB_VOB_IP_IDN) of the cell in which the DSI 315 is recorded.
U_C_IDN).

The navigation pack address information of the DSI describes addresses of a predetermined number of navigation packs. With reference to this address, the video is fast forwarded or the like. The synchronization information (SYNCI) includes:
Address information of sub-picture and audio data to be reproduced in synchronization with the reproduction start time of the video data of the VOB unit (VOBU) including the DSI 315 is described. That is, as shown in FIG. 79, the start address (A_S) of the target audio pack (A_PCK) 291 is determined by the relative number of logical sectors (RLSN) from the NV pack (NV_PCK) 286 on which the DSI 315 is recorded.
YNCA) are described. When there are a plurality of (up to 8) audio streams, the synchronization information (SYN
CI) is described. The synchronization information (SYNCI) includes the target audio pack (SP_PCK) 29.
Address (SP_SYNC) of NV pack (NV_PCK) 286 of VOB unit (VOBU) 85 including “1”
A) NV pack (NV pack) in which DSI 315 is recorded.
_PCK) 286 relative logical sector number (RLS
N). When there are a plurality of sub video streams (up to 32), the synchronization information (SYNC
I) is described.

Next, referring again to FIG. 1, FIGS.
The operation of reproducing movie data from the optical disc 10 having the logical format shown in FIG. 9 will be described. FIG.
, Solid arrows between blocks indicate data buses, and broken arrows indicate control buses.

First, a video manager (VMG) 2
Video title set (VTS) 272 using
Will be described with reference to FIG. In the optical disk device shown in FIG. 1, when the power is turned on and the optical disk 10 is loaded, the system ROM and the R
The system CPU unit 50 reads the initial operation program from the AM unit 52, activates the disk drive unit 30, and starts the search operation as shown in step S241. Accordingly, the disk drive unit 30 starts a read operation from the lead-in area 27 and
Then, the volume and file structure area 70 defining the volume and file structure in accordance with ISO-9660 or the like are read. That is, the system CPU unit 50
In order to read the volume and file structure area 270 recorded at a predetermined position on the disk 10 set in the disk drive unit 30, a read command is given to the disk drive unit 30 and the volume and file structure area 2
The contents of 70 are read and temporarily stored in the data RAM unit 56 via the system processor unit 54. System C
The PU unit 50 extracts information such as the recording position and recording volume size of each file and other management information as information necessary for management via the path table and the directory record stored in the data RAM unit 56, and reads the system ROM &
The data is transferred to a predetermined location in the RAM unit 52 and stored.

Next, the system CPU 50 executes the system ROM & RAM 52 as shown in step S242.
, A video manager (VMG) 271 consisting of a plurality of files starting from the file number 0 is obtained with reference to the information on the recording position and the recording capacity of each file. That is, the system CPU unit 50 gives a read command to the disk drive unit 30 with reference to the information on the recording position and the recording capacity of each file acquired from the system ROM and the RAM unit 52, and exists on the root directory. The position and size of a plurality of files constituting the video manager 271 are obtained, and the video manager (VMG) 271 is acquired.
Is read out and stored in the data RAM unit 56 via the system processor unit 54. After that, the system CPU unit 50 sends the video management information table (VMGI_MAT) 27 from the video manager (VMG) 271 stored in the data RAM unit 56 to the video management information table (VMGI_MAT) 27 as shown in step S243.
8 (TT_SRPT, VMGM_P
GCI_UT, VTS_ART) start addresses are obtained, and each table can be obtained. Here, the user looks at the title booklet in which the title is described and obtains a number for specifying the video title set, and obtains the number in step S24
If the number is directly input by the user via the key operation and display unit 4 as shown at 4, the process proceeds to step S248. If there is no key operation and no input from the user via the display unit 4, step S
As shown by reference numeral 245, VMGM video object set (VMGM_VOBS) 276 is used as menu data.
Is the video management information table (VMGI_MAT)
278. If the VMGM video object set (VMGM_VOBS) 276 does not exist, the process proceeds to step S248 by inputting from the user or selecting a predetermined video title set. VMGM video object set (VMGM_V
If there is an OBS) 276, VMGM video attribute information (VMGM_V_ATR), audio and sub-video stream attribute information (VMGM_AST_ATR, VMGM)
_SPST_ATR) is the video management information table (VM)
GI_MAT) 278. Thereafter, as shown in step S247, a menu is displayed as will be described later in more detail with reference to FIG. 81. In accordance with the display of the menu, the user operates the video title set (VTS) via the key operation and the display unit 4. 272 will be selected. When the video title set (VTS) 272 is selected, the title search pointer table (TT_SRPT) 2 in the video manager (VMG) 271
79, a video title set number (VTSN), a title number (VTS_TTN), and a start address (VTS_SA) of the video title set corresponding to the video title set selected are obtained. Further, the system CPU unit 50 sets the attribute information (VTS_V_A) of the video title set number (VTSN) acquired from the video title set attribute table (VTS_ATRT) 280.
TR, VTS_AST_ATR, VTS_SPST). This attribute information (VTS_V_ATR, VT
Based on S_AST_ATR, VTS_SPST), parameters for video manager menu reproduction are set in each of the video decoder unit 58, audio decoder unit 60, and sub-picture decoder unit 62. The video processing unit 2 in the D / A and playback processing unit 64 according to the attribute information.
01, the audio processing unit 202, the audio mixing unit 203, and the sub-picture reproduction processing unit 207 are set.
With this series of procedures, the preparation for acquiring the video title set 276 is completed as shown in step S250.

Here, an operation until a video manager menu for selecting a video title is displayed will be described with reference to FIG. When the menu search is started as shown in step S210, a volume manager information management table (VMGI_MAT) 278, which is the first table of the video manager 271
Is searched. By this search, the start address (VMGM_PGCI_UT_SA) of the VMGM_PGCI unit table (VMGM_PGCI_UT) 280 for the video manager menu (VMGM) is obtained. VMGM_PGCI unit table 28
0 is obtained and this table (VMGM_PGCI_U
T) 280 table information (VMGM_PGCI_UT)
The number (a) of language units (VMGM_LU_Ns) of the video manager menu is obtained from I), and the first # 1 (n = 1) VM is obtained as shown in step S211.
GM_LU search pointer (VMGM_LU_SR
Acquisition of P) is determined. The search pointer (VMGM_LU_SRP) of the VMGM_LU is set in step S21.
2 are obtained. As shown in step S213, the search pointer (VMGM_LU) of VMGM_LU
_SRP) language code (= b) (VMGM_L)
CD) is the language code (= B) specified for the playback device,
A check is made to see if it matches the default language code. If they do not match, the number of the search pointer is incremented as shown in step S214 (n = n +
1) It is checked whether the number n raised does not exceed the number (a) of language units (VMGM_LU_Ns) in the video manager menu. The number n is the language unit (VMGM_LU_N) of the video manager menu.
If the number is set to be equal to or more than the number (a) of step s), step S
As shown in FIG. 216, the video manager menu (VM
The search operation for GM) ends. The number n is the language unit (VMGM_LU_
If it is within the number (a) of (Ns), the process returns to step S213 to obtain the search pointer (VMGM_LU_SRP) of the n-th VMGM_LU, and steps S213 to S215 are executed again.

In step S213, VMGM_L
If the language code (= b) (VMGM_LCD) described in the U search pointer (VMGM_LU_SRP) matches the language code (= B) specified for the playback device, that is, the default language code, as shown in step S217 The VMGM_LU search pointer (VMGM_LU)
_SRP) corresponding to the language code described in VMGM language unit (VMGM_LU) 252 is obtained. From the VMGM language unit information (VMGM_LUI),
The number of VMM_PGCIs (VMGM_PGCI_Ns) is obtained. Next, as shown in step S218, the VM
GM_PGCI search pointer (VMGM_PGCI_
SRP) 254 to VMGM_PGC category (VM
GM_PGC_CAT) is obtained. Therefore, the V
MGM_PGC category (VMGM_PGC_CA
T) to the menu ID (= “0010”) and VMGM_PGC corresponding to the entry type (= 1)
Number is won. Here, the menu ID (= “001
0 “) corresponds to the title menu for VMGM.VMG corresponding to the obtained VMGM_PGC number
Start address of M_PGC (VMGM_PGC_S
A) is a VMGM_PGCI search pointer (VMGM_
PGCI_SRP) and a VMGM video object set (VMGM_SRP) as shown in step 19
The corresponding PGC is obtained from the (VOBS) 276, and the PGC is reproduced as shown in step S219.

Accordingly, as an example, V as shown in FIG.
The MG menu is displayed. In this example, under the title of the interactive movie series, the first title is the story of "Life of Mr. X" and the second title is the story of "Life of Mrs. Y". A message that the set can be selected is displayed.
Here, when the first title set that is the story of “Life of Mr. X” is selected, the title set corresponding to the first title set is obtained as follows.

That is, the start address (VTS_SA) of the video title set 72 is obtained from the title search pointer 293 of the input number # 1 shown in FIG. Therefore, the video title set information (VTSI) 294 of the title set shown in FIG. 44 is obtained.
The video title set information management table (VTSI_M) of the video title set information (VTSI) 294
The end address (VTSI_MAT_EA) of the video title set information management table (VTSI_MAT) 298 shown in FIG. Also,
Number of audio and sub-picture data streams (VTS_
AST_Ns, VTS_SPST_Ns) and video,
Attribute information of audio and sub-picture data (VTS_V_
ATR, VTS_A_ATR, VTS_SPST_AT
Based on R), each section of the playback apparatus shown in FIG. 1 is set according to its attribute. That is, according to the attribute information, D /
The video processing unit 201, audio processing unit 202, audio mixing unit 203, and sub-picture reproduction processing unit 207 in the A and reproduction processing unit 64 are set.

The video title set menu (VTS
If there is M), a video title set menu is displayed according to the flow shown in FIG. That is, when the menu search is started as shown in step S220, the video title set information management table (VTSI)
_MAT) 298 from this search to the VTSM_PGC for the video title set menu (VTSM)
I unit table (VTS_PGCI_UT) 300
Start address (VTSM_PGCI_UT_S)
A) is obtained. Accordingly, the VTSM_PGCI unit table 300 is obtained, and the table information (VT
The number (a) of the language units (VTSM_LU_Ns) of the video title menu is acquired from the SM_PGCI_UTI) 300, and the acquisition of the search pointer (VTSM_LU_SRP) 351 of the first # 1 (n = 1) VTSM_LU is determined as shown in step S221. Is done. The search pointer of the VMGM_LU 352 (VM
GM_LU_SRP) 351 is obtained as shown in step S222. As shown in step S223, the VM
The search pointer of VM_LU_352 (VMGM_LU_
Language code (= b) described in (SRP) 351 (VTSM
_LCD) is determined to match the language code (= B) specified for the playback device, ie, the default language code. If they do not match, the number of the search pointer is incremented as shown in step 224 (n = n +
1) It is confirmed whether or not the number n raised does not exceed the number (a) of the language units (VTSM_LU_Ns) of the video title set menu. The number n is the language unit (VTSM_LU) of the video title set menu.
If it is set to be equal to or more than the number (_Ns) (a), the search operation for the video title set menu (VTSM) is terminated as shown in step S226. The number n is the language unit of the video title set menu (VTSM
_LU_Ns) within the number (a), step S2
22, the search pointer (VTSM_LU_SRP) 351 of the nth VTSM_LU is obtained,
Steps S223 to S25 are executed again.

In step S223, VTSM_L
U search pointer (VMGM_LU_SRP) 351
In the case where the language code (= b) (VTSM_LCD) described in the above description matches the language code (= B) specified for the playback device, that is, the default language code, as shown in step S227, the search pointer (VMGM) of the VTSM_LU is
_LU_SRP) 351 to obtain a VTSM language unit (VTSM_LU) 352 corresponding to the language code described. The VTSM language unit information (VTSM_L
UI) to the number of VTSM_PGCI (VTSM_PGC)
I_Ns). Next, as shown in step S228, the VTSM_PGCI search pointer (VTSM
The VTSM_PGC category (VTSM_PGC_CAT) is obtained from the _PGCI_SRP) 354. Therefore, the VTSM_PGC category (VTSM_P
From the GC_CAT, the menu ID (= “0011 to“ 0 ”
VTSM_PGC number corresponding to the entry type (= 1) is obtained. Here, the menu ID (= “0011 to“ 0111 ”) corresponds to the VTS
An audio language selection menu for M or a program selection menu for VTSM corresponds to this. The start address (VTSM_PGC_SA) of VTSM_PGC corresponding to the acquired VTSM_PGC number is VTSM.
_PGCI search pointer (VTSM_PGCI_SR
P) and VTSM as shown in step 29
Video object set (VTSM_VOBS) 27
6, the corresponding PGC is obtained, and the PGC is reproduced as shown in step 229.

Accordingly, as an example, V as shown in FIG.
The TS menu is displayed. In this example, “Life of Mr. X” is displayed as a title, and “1. Childhood” and “2. Adolescent” are selectable part-of-titles.
“3. Middle age” and “4. Old age” are displayed. When a part of title is selected by inputting a corresponding key from the key operation unit and the display unit 4 according to this menu, a menu for selecting a language, for example, corresponding to a submenu is displayed. That is, since 32 sub-picture streams are prepared as described above as sub-pictures, the movie provider can display one of the sub-pictures in English, Japanese, German, French, or the like, for example. Can be. In addition, a menu for selecting one from eight audio streams can be prepared as another submenu. That is, any one of the audio streams corresponding to the dubbing can be selected. When a selection item is selected from such a menu, a program chain corresponding to the selection item is reproduced.

If the menu (VTSM) for the video title set (VTS) has a simple configuration,
From the video title set information management table (VTSI_MAT) 298 shown in FIG. 34, a video object set (VTSM_M
VOB) 295 start address (VTSM_VOB)
_SA) may be acquired and a video title set menu may be displayed by the video object set (VTSM_VOB) 295.

Next, the search and reproduction operation of the program chain after the title selection is completed will be described with reference to the flow shown in FIG. That is, when the program chain (PGC) is designated by the key operation / display unit 4 with reference to the menu, the target program chain is searched in the following procedure. The search for the program chain is not limited to the program chain for the title in the video title set, but also for a relatively complicated menu whose menu is composed of the program chain. A similar procedure is adopted. FIG.
When the search operation is started as shown in step S251 as shown in FIG. 5, the system CPU unit 50 stores the video title set information 294 in step S251 as described above.
Acquire as shown at 252. Next, as shown in step 252, the acquired video title set information 294
, The start address of each table is obtained. The video title set part of title search pointer table (VTS_PTT_SRP) in this start address
T) 299 start address (VTS_PTT_SRPT)
_SA) to this table (VTS_PTT_SRP)
T) 299 is obtained. Next, as shown in step S254, the part specified by the user by the video title set 296 number (VTSN) and VTS title number (VTS_TTN) obtained by referring to the title search pointer (TT_SRP) 279 of the video manager (VMG) 271. A PGC number and a PG number corresponding to the obtitle are obtained.

VTS-PGCI table (VTS-PG
CIT) 300 is referred to and a VTS_PGCI search pointer #n (VT) corresponding to the obtained PGC number is obtained.
S_PGCI_SRP # n) 303 is acquired, and the pointer #n (VTS_PGCI_SRP # n) 303 is used to acquire the category (VTS_PG) of the VTS_PGC.
C_CAT) and VTS_ indicated by the pointer.
The start address (VTS_PGCI_SA) of the PGC information (VTS_PGCI # n) 304 is obtained. As shown in step S256, the VTS_PGC information (VTS_PGC information)
PGCI # n) 304 start address (VTS_PGC)
I_SA) to VTS_PGC information (VTS_PGCI)
#N) 304 is obtained. The VTS_PGC information (VTS_PGCI) acquired as shown in step S257
#N) PGC general information (PGC_GI) 305 of 304
Of the PGC (PGC_CNT) is obtained from the
The number of programs and the number of cells in the PGC are obtained from the description of C_CNT.

Prior to the reproduction of the PGC, the system CPU 50 obtains the program chain navigation command table information (PGC_NV_CMDTI) from the program chain navigation command table (PGC_NV_CMDT) 309, and obtains the table as shown in step S258. (PGC_NV_C
With reference to the MDT 309, the pre-process navigation command # 1 (PRE_NV_CMD # 1) to the pre-process navigation command #i (PRE_
NV_CMD # i) are acquired one after another and the command is executed. This command, for example, a set command specifies a register for a navigation command,
Further, a predetermined register is initialized.

A pre-navigation command (PRE_
NV_CMD), the PGC program map (PGC_MAP) 306 and the cell playback information (C
_PBIT) is acquired, and reproduction of the designated program (x), that is, reproduction of the cell, is started as shown in step S259. When the reproduction of a certain program is completed by the reproduction of the cell, the program number is updated (x = x + 1) as shown in step S260, and step S260 is performed.
It is checked whether there is an updated program number as indicated by reference numeral 261. That is, it is confirmed whether the reproduced program before the update is the final program. If there is a program with the updated program number, the process moves to step S259, and the updated program is reproduced. If the reproduced program is the final program, a selection menu for selecting a program to be reproduced next is displayed as shown in step S262. In this menu, selection items may be displayed as sub-pictures while cell playback is maintained in a static state, or selection items may be displayed as sub-pictures while cell playback is repeated and moving images are displayed. You may.

This selection menu allows the user to select the next P
When the GC is selected, the PGC number of the branch destination selected by the user is set in the register specified by the set command or the like. At this time, the audio stream and the sub-video stream are set by referring to the language held in the device, that is, the player in advance.

When the selection is completed, the system CPU 50
Is a post-process navigation command # 1 (POST_POST_COMMAND) from the program chain navigation command table (PGC_NV_CMDT) 309.
Post-process navigation commands #j (POST_NV_CMD # j) are acquired one after another from NV_CMD # 1) and executed. That is, when the comparison command is executed, the next PGC number is determined in consideration of the past selection progress by the user, and this PGC number is set in the register as the updated PGC number. If the comparison command is executed, step S2
The PGC number selected in 62 is not always selected, and an appropriate PGC number is set in the register in consideration of the past selection process. When a jump command is executed, a jump is made to the PGC of the set PGC number. In addition, when the user inputs the “previous” and “next” keys during playback, a link command is executed, and the link is made to the PGC of the PGC number described in PGC_NV_CTL in PGCI_GI. Post Process Navigation Command (PO
If the PGC branch does not occur in (ST_NV_CMD), as shown in step S264, the PGC general information (P
GC_GI) of PGCI_GI shown in FIG.
The next PGC number is obtained from GC_NV_CTL and linked to the PGC specified by that number.

When the next PGC number is determined, step S2
As shown at 65, it is confirmed whether there is a next PGC number. If there is a next PGC number, step S is executed again.
The process proceeds to 255, and if there is no next PGC number, the reproduction of the PGC is ended as shown in step S266.

An example of the above PGC reproduction will be described with reference to FIG. FIG. 86 shows how the cells 284 in the video objects 283 having the identification numbers # 1 and # 2 are reproduced in the order of the program chains # 1 and # 2. When the PGC # 1 is reproduced, the pre-navigation command 322 is executed as described above to prepare for reproduction of the cells in the PGC, and then the cells are reproduced according to the reproduction number (CN # k) order. Is done. In this example, the order of the cell reproduction numbers (CN # k) is the order of the cell identification numbers (C_IDN # q).
The order of the cell reproduction numbers (CN # k) does not have to be the order of the cell identification numbers (C_IDN # q). PGC
In # 1, when the last cell (CN # f) is reproduced,
The post command 324 is executed, for example, a link command is executed, and the next PGC # 2 is linked. In PGC # 2, the pre-navigation command 322 is similarly executed, and the reproduction of the cell is started. PG
In C # 2, a cell (CN) storing an inter-cell navigation command (IC_NVCMD) 326 is stored.
# 3), the inter-cell navigation command (IC_NVCMD) 326 is executed after the cell (CN # 3) 284 is reproduced. That is, when reproducing the cell (CN # 3) 284, the system CPU
The unit 50 obtains the inter-cell command number described in the cell category (C_CAT) by referring to the C_PBI in the C_PBI table 307, and obtains the I number corresponding to the number.
The C_NV command 326 is obtained, and the command is executed after the cell is reproduced. In the last PGC # 2, when the reproduction of the cell ends, the post-navigation command 324 is similarly executed.

Pre-navigation command 3 described above
22, Inter-cell navigation command 326 and post-navigation command 324, and PGC_
By appropriately setting the description of PGC_CAT described in the GI 305 by the program provider, it is possible to produce an excellent title set of the user interface in an interactive environment. That is, not only the simple serial playback mode in which the program chains are played back in ascending order from the entry program chain # 1 as shown in FIG. 87A, but also the entry program # 1 as shown in FIG. To program chain #
It is also possible to realize a branch reproduction mode in which the story proceeds by branching to any of # 2, # 3, and # 4.

In the format of the initial version,
The sequence creation method is shown in FIGS. 20 to 25,
A program chain is created as described above.
In the description of FIGS. 20 to 25, the sequence is replaced with a program chain, cells including intercell commands necessary for cell arrangement are arranged, and pre-navigation commands and post-navigation commands are appropriately arranged.・ A chain can be created. The format description according to the improved version and FIGS.
5 can be understood by referring to the description.

Next, referring to FIGS. 88 to 93, FIG.
The following describes a video data in the logical format shown in FIG. 79, a method of recording the video data on the optical disc 10 for reproducing the video data, and a recording system to which the recording method is applied.

FIG. 88 shows an encoder system for generating a video file 88 of a title set 84 in which video data is encoded. In the system shown in FIG. 88, as sources of main video data, audio data, and sub-video data, for example, a video tape recorder (VTR) 201, an audio tape recorder (ATR) 202, and a sub-picture reproducer (Subpicture, so
urce) 203 is employed. These generate main video data, audio data and sub-video data under the control of a system controller (Sys, con) 205, which are respectively a video encoder (VENC) 206, an audio encoder (AENC) 207 and a sub-video encoder. (SPENC) 208, A / D-converted by these encoders 206, 207, and 208 under the control of the system controller (Sys, con) 205, and also encoded by each compression method, and encoded. Data, audio data and sub-picture data (Com
p, Video, Comp, Audio, Comp, Sub-pict) are stored in the memories 210, 211, 212.

The main video data, audio data and sub video data (Comp, Video, Comp, Audio, Comp,
Sub-pict) is a system controller (Sys, con) 20
5 to a file formatter (FFMT) 214, which is converted into the file structure of the video data of this system as described above, and the management information such as setting conditions and attributes of each data is stored as a file in the system controller (Sys, con ) 205 in the memory 216.

Hereinafter, a standard flow of an encoding process in the system controller (Sys, con) 205 for creating a file from video data will be described.

The main video data and audio data are encoded according to the flow shown in FIG. 89, and the encoded main video data and audio data (Comp, Video, Co
mp, Audio) data is created. That is, when the encoding process is started, parameters necessary for encoding the main video data and the audio data are set as shown in step 70 of FIG. Some of these parameters are set by the system controller (Sys, c
on) 205 and used by the file formatter (FFMT) 214. As shown in step S271, the main video data is pre-encoded using the parameters, and the optimal code amount distribution is calculated. As shown in step S272, the main video is encoded based on the code amount distribution obtained by the pre-encoding. At this time, the encoding of the audio data is performed at the same time. If necessary, as shown in step S273, partial re-encoding of the main video data is executed, and the main video data of the re-encoded portion is replaced. Through this series of steps, the main video data and audio data are encoded. Further, as shown in steps S274 and S275, the sub-picture data is encoded and encoded sub-picture data (Comp, Sub-pict)
Is created. That is, parameters necessary for encoding the sub-picture data are set in the same manner. Some of the parameters set as shown in step S274 are stored in the system controller (Sys, con) 205,
Used by the file formatter (FFMT) 214. Sub-picture data is encoded based on these parameters. By this processing, the sub-picture data is encoded.

In accordance with the flow shown in FIG. 90, encoded main video data, audio data and sub video data (Com, Video, Comp, Audio, Comp, Sub-pict)
Are converted to a title set structure of video data as described with reference to FIGS. 26 and 79.
That is, as shown in step S276, a cell is set as the minimum unit of video data, and cell reproduction information (C_PBI) relating to the cell is created. Next, step S27
As shown in FIG. 7, the configuration of the cells constituting the program chain, the main video, the sub video, the audio attributes, and the like are set (for some of these attribute information, information obtained at the time of each data encoding is used). ), Video title set information management table information (VTSI_MAT) 2 including information on a program chain as shown in FIG.
78 and a video title set program chain table (VTS_PGCIT) 300 are created. At this time, a video title set direct access pointer table (VTS_DAPT) is also created as needed. Encoded main video data, audio data and sub-video data (Com, Video, Comp, Audio,
Comp, Sub-pict) are subdivided into fixed packs, and each data cell is arranged while placing an NV pack at the beginning of each VOBU so that each data cell can be reproduced in the order of the time code of each data. A video object (VOB) composed of a plurality of cells as shown is configured, and a set of the video objects is formatted into a title set structure.

Incidentally, in the flow shown in FIG. 90, the program chain information is obtained in the process of step S277.
The database of the system controller (Sys, con) 205 is used, or data is re-input as necessary, and the program chain information (PGI) is executed.
It is described as

FIG. 91 shows a disc formatter system for recording a title set formatted as described above on an optical disc. As shown in FIG. 91, in the disk formatter system, these file data are stored in the volume formatter (VF) from the memories 220 and 222 storing the created title set.
MT) 226. In the volume formatter (VFMT) 226, the title sets 284, 28
6. The management information is extracted from the video manager 71
Are created, and logical data in a state to be recorded on the disk 10 in the arrangement order shown in FIG. 26 is created. Data for error correction is added to the logical data created by the volume formatter (VFMT) 226 by a disk formatter (DFMT) 228, and the logical data is converted again to physical data to be recorded on a disk. In the modulator 230, the physical data created by the disk formatter (DFMT) 228 is converted into recording data to be actually recorded on a disk, and the modulated recording data is converted into the recording data by the recording device 2.
32 is recorded on the disk 10.

A standard flow for creating the above-described disc will be described with reference to FIGS. 92 and 93. FIG.
2 shows a flow in which logical data to be recorded on the disk 10 is created. That is, step S28
As shown by 0, parameter data such as the number of video data files, the order of arrangement, and the size of each video data file are set first. Next, from the parameters set as shown in step S281 and the video title set information 281 of each video title set 72, the video manager 7
1 is created. Thereafter, as shown in step S282, the video manager 71 and the video title set 72
, Data is arranged along the corresponding logical block number, and logical data to be recorded on the disk 10 is created.

Thereafter, a flow for creating physical data to be recorded on a disk as shown in FIG. 93 is executed. That is, as shown in step S283, the logical data is divided into a fixed number of bytes, and error correction data is generated. Next, as shown in step S284, the logical data divided into a fixed number of bytes and the generated data for error correction are combined to create a physical sector. afterwards,
As shown in step S285, physical data is created by combining physical sectors. As described above, modulation processing based on a certain rule is performed on the physical data generated by the flow shown in FIG. 93 to create recording data. Thereafter, the recording data is recorded on the disk 10.

The data structure described above can be applied not only to a case where the data is recorded on a recording medium such as an optical disk and distributed to a user for reproduction, but also to a communication system as shown in FIG. That is, the optical disc 10 storing the video manager 71 and the video title set 72 as shown in FIG. 26 is loaded into the reproducing apparatus 300 according to the procedure shown in FIGS. 80 to 85B, and the system CP of the reproducing apparatus is loaded.
The encoded data may be digitally extracted from the U section 50 and sent to the user or cable subscriber by radio waves or a cable by the modulator / transmitter 310. Also, data encoded and formatted on the provider side such as a broadcasting station is created by the encoding system 320 and the format system shown in FIGS. 88 and 91, and the format data is similarly transmitted to the modulator / transmitter 310.
May be transmitted to the user or the cable subscriber side by radio waves or a cable. In such a communication system, the information of the video manager 71 is first modulated by the modulator / transmitter 310 or directly distributed to the user side free of charge, and when the user is interested in the title, the user or the subscriber is notified. The title set 72 is transmitted to the user by the modulator / transmitter 310 via radio waves or a cable in response to a request from the user. In the transfer of the title, first, the video title set information 94 is transmitted under the management of the video manager 71, and then the title video object 95 in the video title set reproduced by the title set information 94 is transferred. At this time, if necessary, a video object 95 for a video title set menu is also sent. The transmitted data is received by the receiver / demodulator 400 on the user side, processed as encoded data by the system CPU unit 50 of the reproducing apparatus on the user or subscriber side shown in FIG. Is played.

As shown in FIGS. 85A and 85B, the transfer of video data is realized in units of PGC, and after the transfer of a certain PGC, the next transfer to be transferred next on the user side is performed by the user. The PGC can be arbitrarily selected, or if there is no selection by the user, the next PGC to be transferred next is automatically determined. As described above, even in a communication system, video data can be reproduced in an interactive environment.

In the embodiment described above, a high-density recording type optical disk has been described as a recording medium.
The present invention provides a storage medium other than an optical disc, for example,
The present invention can also be applied to a magnetic disk or another storage medium capable of physically recording at high density.

[0166]

As described above, according to the present invention, a plurality of selectable movies and programs are stored in one optical disk, and the branch information (selection information) is recorded on the disk. An interactive environment can be provided to the user without preparing a dedicated application for each.

Further, according to the present invention, since the branch information (selection information) is recorded in units of a closed file set on the disk, the portability of data is increased and the data can be easily handled.

[Brief description of the drawings]

FIG. 1 is a block diagram schematically showing an optical disk device according to one embodiment of the present invention.

FIG. 2 is a block diagram illustrating details of a mechanical unit of the disk drive device illustrated in FIG. 1;

FIG. 3 is a perspective view schematically showing a structure of an optical disk loaded in the disk drive device shown in FIG.

FIG. 4 is an explanatory diagram showing a structure of a logical format according to an initial version of the optical disc shown in FIG. 3;

FIG. 5 is an explanatory diagram showing the structure of a disc information file shown in FIG.

FIG. 6 is an explanatory diagram showing the structure of files such as a movie file and a music file shown in FIG. 4;

FIG. 7 is an explanatory diagram for explaining a hierarchical structure of a video data area of the file shown in FIG. 6;

FIG. 8 is an explanatory diagram showing one GOP forming the video cell shown in FIG. 7;

FIG. 9 is an explanatory diagram showing parameters described in a cell information table in a file management information area shown in FIG. 6;

FIG. 10 is an explanatory diagram showing parameters described in a sequence information table of a file management information area shown in FIG. 6;

FIG. 11 is an explanatory diagram showing parameters described in a file management table in a file management information area shown in FIG. 6;

FIG. 12 is a flowchart for explaining a complete sequence.

FIG. 13 is a flowchart for explaining a complete sequence in the same manner.

FIG. 14 is a flowchart illustrating a connection-type sequence.

FIG. 15 is a flowchart for explaining a connection-type sequence in the same manner.

FIG. 16 is a flowchart for explaining a connection-type sequence in the same manner.

FIG. 17 is a flowchart for explaining another connection type sequence.

FIG. 18 is a flowchart for explaining a connection-type sequence in the same manner.

FIG. 19 is a flowchart for explaining a connection-type sequence in the same manner.

FIG. 20 is an explanatory diagram showing a relationship between cell information and sequence information.

FIG. 21 is an explanatory view similarly showing a relationship between cell information and sequence information.

FIG. 22 is an explanatory view similarly showing a relationship between cell information and sequence information.

FIG. 23 is a flowchart illustrating a process of creating cell information and sequence information.

FIG. 24 is a flowchart illustrating a process of creating cell information and sequence information.

FIG. 25 is a flowchart similarly explaining a process of creating cell information and sequence information.

26 shows a structure of a logical format of an optical disc according to an improved version obtained by improving the logical format of the optical disc according to the initial version shown in FIG.

FIG. 27 shows the structure of the video manager shown in FIG.

FIG. 28 is an example showing a structure of a video object set (VOBS) shown in FIG. 27;

FIG. 29 shows a video manager (VMG) shown in FIG. 27;
I) Volume manager information management table (VM)
GI_MAT).

FIG. 30 shows a video manager (VMG) shown in FIG.
Title search pointer table (TSPT) in I)
The structure of is shown.

FIG. 31 shows parameters and contents of information (TSPTI) of the title search pointer table (TSPT) of the title search pointer table (TSPT) shown in FIG. 30.

FIG. 32 shows parameters and contents of a title search pointer (TT_SRP) corresponding to an input number of the title search pointer table (TSPT) shown in FIG.

FIG. 33 is an exemplary view for explaining the structure of a program chain stored in a file;

FIG. 34 shows a video manager menu P shown in FIG. 27;
GCI unit table (VMGM_PGCI_UT)
The structure of is shown.

FIG. 35 shows parameters and contents of VMGM_PGCI unit table information shown in FIG. 23.

FIG. 36 shows parameters and contents of a video manager menu language unit search pointer shown in FIG. 35.

FIG. 37 shows a structure of a video manager menu language unit shown in FIG. 34.

FIG. 38 shows parameters and contents of the video manager menu language unit information shown in FIG. 37.

FIG. 39 shows parameters and contents of the video manager menu program chain information shown in FIG. 37.

FIG. 40 shows a structure of a video title set attribute table shown in FIG. 27.

FIG. 41 shows parameters and contents of the video title set attribute table information shown in FIG. 40.

FIG. 42 shows parameters and contents of a video title set attribute search pointer shown in FIG. 40.

FIG. 43 shows parameters and contents of a video title set attribute shown in FIG. 40.

FIG. 44 shows the structure of the video title set shown in FIG.

FIG. 45 shows parameters and contents of a video title set information management table (VTSI_MAT) of the video title set information (VTSI) shown in FIG. 44.

FIG. 46 shows a video title set part of title search pointer table (VTS_PTT) shown in FIG.
_SRPT).

FIG. 47 shows parameters and contents of part of title search pointer information (PTT_SRPTI) shown in FIG. 46.

FIG. 48 shows parameters and contents of a title unit search pointer (TTU_SRP) shown in FIG. 46.

FIG. 49 shows parameters and contents of a part-of-title search pointer (PTT_SRP) shown in FIG. 46.

FIG. 50 is a table (VTS_PGCIT) of video title set program chain information shown in FIG. 46;
The structure of is shown.

FIG. 51 is a table (VTS_PGCIT) of video title set program chain information shown in FIG. 50;
This shows the parameters and contents of the information (VTS_PGCITI).

FIG. 52 is a table (VTS_PGCIT) of video title set program chain information shown in FIG. 50;
2 shows parameters and contents of the search pointer (VTS_PGCIT_SRP).

FIG. 53 shows a structure of program chain information (VTS_PGCI) for a video title set corresponding to the program chain of the video title set program chain information (VTS_PGCI) shown in FIG. 50.

FIG. 54 shows parameters and contents of program chain general information (PGC_GI) of the program chain information (VTS_PGCI) shown in FIG. 53.

FIG. 55 shows a bitmap table showing the description of PGC_CNT shown in FIG. 54.

FIG. 56 shows the structure of a PGC navigation command table (PGC_NV_CMDT) shown in FIG. 53.

FIG. 57 shows parameters and contents of PGC navigation command table information (PGC_NV_CMDTI) shown in FIG. 56.

FIG. 58 shows parameters and contents of the pre-navigation command (PRE_NV_CMD) shown in FIG. 56.

FIG. 59 shows parameters and contents of the post-process navigation command (POST_NV_CMD) shown in FIG. 56.

FIG. 60 shows parameters and contents of the inter-cell navigation command (IC_NV_CMD) shown in FIG. 56.

FIG. 61 shows a structure of a program chain map (PGC_PGMAP) of the program chain information (VTS_PGCI) shown in FIG. 53.

62 shows parameters and contents of an entry cell number (ECELLN) for a program described in the program chain map (PGC_PGMAP) shown in FIG. 61.

63 is a cell reproduction information table (C_P) of the program chain information (VTS_PGCI) shown in FIG. 53.
BIT).

FIG. 64 shows a cell reproduction information table (C_
This section shows the parameters and contents of the cell playback information (C_PBI) of the PBIT.

FIG. 65: Cell position information (C_POSI) of the program chain information (VTS_PGCI) shown in FIG. 63
The structure of is shown.

FIG. 66 shows cell position information (C_POS) shown in FIG.
The parameters and contents of I) are shown.

FIG. 67 shows a structure of a video title set menu PGC unit table shown in FIG. 44.

FIG. 68 shows a video title set PG shown in FIG. 67.
This section shows the parameters and contents of the CI unit table information.

FIG. 69 shows parameters and contents of a video title set language search pointer shown in FIG. 67.

FIG. 70 shows a structure of a video title set menu language unit shown in FIG. 67.

FIG. 71 shows parameters and contents of the video title set menu language unit information shown in FIG. 70.

FIG. 72 is a video title set PG shown in FIG. 70;
Shows the parameters and contents of the CI search pointer.

FIG. 73 shows a structure of the navigation pack shown in FIG. 28.

FIG. 74 shows a structure of a video, audio, and sub-picture pack shown in FIG. 28.

75 shows parameters and contents of playback control information (PCI) of the navigation pack shown in FIG. 73.

FIG. 76 shows parameters and contents of general information (PCI_GI) in the reproduction control information (PCI) shown in FIG. 75.

FIG. 77 shows parameters and contents of the disc search information (DSI) of the navigation pack shown in FIG. 73.

FIG. 78 shows the disc search information (DS) shown in FIG. 77;
The parameters and contents of DSI general information (DSI_GI) of I) are shown.

FIG. 79 shows a video object (VO) shown in FIG. 77;
B) shows the parameters of the synchronous reproduction information (SYNCI) and their contents.

FIG. 80 shows an operation flow from the start of operation of the apparatus to the acquisition of a video title set.

FIG. 81 is a flowchart showing a video manager menu search operation.

FIG. 82 shows an example of a video manager menu.

FIG. 83 is a flowchart showing a video title set menu search operation.

FIG. 84 shows an example of a video title set menu.

FIG. 85 is a flowchart showing a procedure for acquiring a video title set and playing back PGC.

FIG. 86 shows the relationship between video objects and PGCs, and shows the procedure for reproducing cells.

FIG. 87 shows a reproduction example of a program chain.

FIG. 88 is a block diagram illustrating an encoder system that encodes video data to generate a video file.

FIG. 89 is a flowchart showing an encoding process shown in FIG. 88;

90 is a flowchart of creating a video data file by combining main video data, audio data, and sub-picture data encoded according to the flow shown in FIG. 89.

FIG. 91 is a block diagram showing a disk formatter system for recording a formatted video file on an optical disk.

FIG. 92 is a flowchart of creating logical data to be recorded on a disk in the disk formatter shown in FIG. 91.

FIG. 93 is a flowchart for creating physical data to be recorded on a disk from logical data.

FIG. 94 is a schematic diagram showing a system for transferring the video title set shown in FIG. 26 via a communication system.

[Explanation of symbols]

6 Monitor part 8 Speaker part 10 Optical disk 14 Transparent substrate 16 Light reflection layer 28 Data recording area 30 Disk drive part 32 Optical pickup 34 Objective lens 36 Focus drive circuit 37 Drive circuit 44 ... Servo processing circuit 50 ... System CPU 54 ... System processor unit 56 ... Data RAM unit 58 ... Video decoder unit 60 ... Audio decode unit 62 ... Sub-picture decoder unit 64 ... D / A and reproduction processing circuit 70 ... Volume management information area 72 ... System area 74 ... Volume management area 76 ... Disk information file 78 ... File 71 ... Basic volume descriptor area 73 ... Volume descriptor set terminator area 75 ... Bus table record area 77 ... Directory record Area 77 80 File area 82 File management information area 84 Menu video data area 86 Disc configuration information area 87 Menu configuration information area 88 Cell information table 90 Menu data cell 101 File management information area 102 Video Data area 113 File management table 114 Sequence information table 115 Cell information table 201 Video tape recorder 202 Audio tape recorder 203 Sub-picture reproducer 205 System controller 206 Video encoder 207 Audio encoder 208 Sub-picture encoder 205: System controller 220, 222 ... Memory 226 ... Volume formatter 228 ... Disk formatter 30 modulator 232 recorder 270 volume and file structure area 271 video manager (VMG) 272 video title set (VTS) 273 other recording area 274 file 275 video manager information (VMGI) 276 video Video object set (VMGM_VOBS) for manager menu 277: Backup of video manager information (VMGI_BUP) 278: Video management information management table (VMGI_)
MAT) 279… title search pointer table (TT)
_SRPT) 280… Video title set attribute table (VT)
S_ATRT) 282 Video object set (VOBS) 283 Video object (VOB) 284 Cell 95 285 Video object unit (VOBU) 286 Navigation pack (NV pack) 288 Video pack (V pack) 290 Sub-picture pack (SP pack) 291… Audio pack (A pack) 295… Video object set for video title set menu (VTSM_VOBS) 296… Video object set (VTSTT_VOBS) for title of video title set 297… Video title set information (VTSI) ) Backup 298 Video title set information management table (VTSI_MAT) 299 Video title set part object Tor search pointer table (VTS_PTT_SRPT) 300 ... video title set program chain information table (VTS_PGCIT) 301 ... video title set time search map table (VTS_MAPT) 304 ... PGC information (VTS_PGCI) 306 ... program chain program map (PGC_PGMAP) 307 … Cell reproduction information table (C_PBIT) 308… cell position information table (C_POSIT) 311… video title set menu PGCI unit table (VTSM_PGCI_UT) 312… video title set cell address table (VTS_C_ADT) 313… VTS_PGCIT search pointer (VT)
S_PGCIT_SRP) 316 PCI packet 317 DSI packet 310 Modulator / Transmitter 400 Receiver / Demodulator

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tomoaki Kurano 70, Yanagimachi, Yuki-ku, Kawasaki, Kanagawa Prefecture Inside the Toshiba Yanagimachi Plant (72) Inventor Hideki Mimura 70, Yanagimachi, Yuki-ku, Kawasaki, Kanagawa Toshiba Corporation Inside the Yanagimachi Plant (72) Inventor Takeshi Hagio 1-1-1, Shibaura, Minato-ku, Tokyo Inside the Toshiba Corporation head office (56) References JP-A-9-27170 (JP, A) International publication 97/7504 ( WO, A1) (58) Fields investigated (Int. Cl. ⁶ , DB name) G11B 27/00 G11B 27/10 G11B 20/12 H04N 5/93 (54) [Title of Invention] Optical disc according to program chain information And apparatus for reproducing data from an optical disc, a method and apparatus for recording reproduced data on an optical disk together with program chain information, and a program key Communication system for transferring and reproducing reproduction data together with chain information

Claims (24)

(57) [Claims] 1. An optical disk having a reproduction target area in which reproduction target data of a story is stored and a data area having a program chain information table for defining at least two or more program chains each corresponding to a part of the story. In the apparatus for reproducing data from, the reproduction target area, a number of data cells are arranged, each cell is composed of a number of video object units arranged in reproduction order, each video object unit, A combination of video and audio packs, or a combination of video, audio and sub-picture packs, which is defined in one playback unit. The program chain information table contains program chain information that determines the playback of each program chain. And this program And a search pointer corresponding to a program chain number for searching for chain information. Each of the program chain information has a cell address that specifies the reproduction order of the data cells in the program chain. A cell reproduction information table described in order, wherein each cell address is a cell reproduction information table specified by an address of a first video object unit and an address of a last video object unit constituting the cell. Content information on the number of cells constituting the program chain, and program chain navigation information, wherein the program chain navigation information is a program program to be reproduced prior to the program chain. Chain If there is a program chain number before specifying the previous program chain, or if there is no program chain to be played prior to the program chain, enter the description without the previous program chain. The previous program chain information and, if there is a next program chain to be reproduced next to the program chain, the next program chain number specifying the next program chain or the program If there is no program chain to be played next to the chain, next program chain information having a description of no next program chain; and , The program chain number specified Search means for acquiring program chain information by a search pointer corresponding to the above, and acquiring cells one after another in the description order in accordance with the cell address described in the cell reproduction information table therein; and a video object unit in the cell. Output means for extracting a video pack, an audio pack or a sub-picture pack, decoding them, outputting them as a video signal and an audio signal, and reproducing the specified program chain, and a next or previous program Instruction means for instructing a chain; and when the next or previous program chain is instructed during reproduction of the designated program chain,
Link means for linking to the program chain and reproducing the program chain if the presence or absence of the designated program chain has been confirmed by referring to the program chain information. A reproducing apparatus characterized by the above-mentioned. 2. The reproducing apparatus according to claim 1, wherein said instruction means includes input means for inputting an instruction of a previous or next program chain. 3. The program chain navigation information, if there is a destination program chain to be reproduced in place of reproduction of the program chain, a program chain number for specifying the destination program chain. Alternatively, if there is no destination program chain to be reproduced in place of the continuation of reproduction of the program chain, the program further includes destination program chain information including a description of the absence of the destination program chain. Input means for inputting an instruction for a destination program chain, wherein the link means, when an instruction for the destination program chain is issued by the instruction means, refers to the program chain information to indicate the destination program chain. If you have checked for
2. The reproducing apparatus according to claim 1, wherein the reproducing unit reproduces the program chain by linking to the program chain. 4. The program chain information includes a user operation related to a request of a user who is prohibited during reproduction of the program chain, and the indicating means is configured to transmit the user information from the user during reproduction of the program chain. 2. The reproducing apparatus according to claim 1, wherein when a request corresponding to an operation is received, the processing is prohibited. 5. The audio data pack includes at least one audio stream specified by an audio stream number and selectively reproduced, and the sub-video data pack is specified by a sub-video stream number. And at least one sub-video stream to be selectively played back, wherein the program chain information includes information indicating a selectable audio stream number and a sub-video stream number; 2. The reproducing apparatus according to claim 1, further comprising a selection unit for selecting a sub-video stream. 6. The program chain information includes a program chain command table including inter-cell command information defining a command to be executed after a cell in the program chain is reproduced. The playback device according to claim 1, wherein 7. The reproducing apparatus according to claim 1, wherein the program chain information includes a program chain program map that defines a structure of a program in the program chain. 8. The reproduction according to claim 1, wherein the program chain information table includes the number of program chains defined in the table, and has program chain information corresponding to the number. apparatus. 9. The video object unit comprises:
The navigation pack includes a navigation pack disposed at the top of the navigation pack. The navigation pack includes a PCI packet in which presentation control data of a video object unit is described and a DSI packet for searching for another video object unit. The playback device according to claim 1, wherein the search data is stored in a DSI packet. 10. An optical disc having a reproduction target area in which reproduction target data of a certain story is stored and a data area having a program chain information table for defining at least two or more program chains each corresponding to a part of the story. In the method of reproducing data from, the reproduction target area, a number of data cells are arranged, each cell is composed of a number of video object units arranged in reproduction order, each video object unit, A combination of video and audio packs, or a combination of video, audio and sub-picture packs, which is defined in one playback unit. The program chain information table contains program chain information that determines the playback of each program chain. And this program A search pointer corresponding to a program chain number for searching for chain information is provided. Each of the program chain information has a cell address that specifies a reproduction order of the data cells in the program chain. A cell reproduction information table described in order, wherein each cell address is a cell reproduction information table specified by an address of a first video object unit and an address of a last video object unit constituting the cell. Content information on the number of cells constituting the program chain, and program chain navigation information, wherein the program chain navigation information is a program program to be reproduced prior to the program chain. Choi If there is a program chain, the program chain number before specifying the previous program chain, or the description without the previous program chain if there is no program chain to be played prior to the program chain And the next program chain number to identify the next program chain, if any, and the next program chain to be reproduced next to that program chain. If there is no program chain to be played next to the program chain, next program chain information having a description of no next program chain; and Program chain number specified by searching the table A search step of acquiring program chain information by a search pointer corresponding to a cell and sequentially acquiring cells in the description order in accordance with the cell addresses described in a cell reproduction information table in the program chain information; An output step of taking out a video, audio pack or sub-picture pack from the unit, decoding them, outputting them as a video signal and an audio signal, and reproducing the specified program chain; An instruction step for instructing a chain, and when the next or previous program chain is instructed during reproduction of the designated program chain,
If the presence or absence of the designated program chain has been confirmed by referring to the program chain information, a link step of linking to the program chain and reproducing the program chain; A reproduction method characterized by the above-mentioned. 11. The program chain navigation information includes, if there is a destination program chain to be reproduced instead of continuing reproduction of the program chain, a program chain number for specifying the destination program chain. Alternatively, the destination program to be reproduced instead of continuing the reproduction of the program chain
If there is no chain, the program further includes destination program chain information including a description of the destination program chain, and the inputting step includes inputting an instruction of a previous, next, or destination program chain. If the instruction of the destination program chain is included in this instruction step, the presence or absence of the next, or destination program chain before the instruction is confirmed with reference to the program chain information. 11. The reproducing method according to claim 10, wherein in that case, the program chain is reproduced by linking to the program chain. 12. A step of encoding video data and audio data or video data, audio data and sub-picture data to generate a plurality of packetized data packs, and preparing a plurality of data units. A data unit in which each data unit is defined as one unit of reproduction related to a combination of a video pack and an audio pack, or a combination of a video pack, an audio pack and a sub-picture pack. And a step of defining a number of data cells, wherein each data cell is arranged in the reproduction order to define a data cell composed of a number of data units, and program chain information. A step of generating a table, wherein the program chain information table - corresponding to a part of the story two or more of the program
Generating a program chain information table defining a chain; recording the generated program chain information table in a data management area; and reproducing video object units constituting the cell one after another. A recording step of recording reproduced data on an optical disc, comprising: a recording step of recording a plurality of cells substantially in the reproduction target area by recording the cells in an area; Program chain information that determines the reproduction of the program chain, and a search pointer corresponding to a program chain number for searching for the program chain information. Each of the program chain information includes the program chain information in the program chain. Change the playback order of data cells Is a cell reproduction information table in which cell addresses to be specified are described in the reproduction order. Each cell address is specified by the address of the first video object unit and the address of the last video object unit constituting the cell. A cell reproduction information table, content information on the number of cells constituting the program chain, and program chain navigation information, wherein the program chain navigation information is reproduced prior to the program chain. If there is a previous program chain to be played, the previous program chain number identifying the previous program chain, or the previous program chain if there is no program chain to be played before that program chain Program check Previous program chain information with a description of the program chain, and the next program chain that identifies the next program chain, if any, to be played after the program chain. If there is no program chain to be reproduced next to the chain number or the program chain concerned, next program chain information having a description of no next program chain; Recording method for recording an image on an optical disc. 13. The program chain navigation information, if there is a destination program chain to be reproduced instead of continuing reproduction of the program chain, a program chain number for specifying the destination program chain Alternatively, the destination program to be reproduced instead of continuing the reproduction of the program chain
13. The recording method according to claim 12, further comprising, if there is no chain, destination program chain information including a description of the absence of the destination program chain. 14. The recording method according to claim 12, wherein the program chain information includes a user operation related to a user request prohibited during reproduction of the program chain. 15. The audio data pack includes at least one audio stream specified by an audio stream number and selectively reproduced.
The sub-picture data pack includes at least one sub-picture stream specified by a sub-picture stream number and selectively reproduced, and the program chain information includes:
2. The method according to claim 1, further comprising information indicating a selectable audio stream number and sub-picture stream number.
Recording method of 2. 16. The program chain information includes a program chain command table including inter-cell command information defining a command to be executed after a cell in the program chain is reproduced. The recording method according to claim 12, wherein 17. The recording method according to claim 12, wherein the program chain information includes a program chain program map that defines a structure of a program in the program chain. 18. The recording method according to claim 12, wherein the program chain information table includes the number of program chains defined in the table, and has program chain information corresponding to the number. 19. The audio data pack includes one or more selectively reproducible audio streams specified by an audio stream number, and the sub-picture pack includes a selectively reproducible audio stream specified by a sub-picture stream number. 13. The method according to claim 12, comprising one or more possible sub-picture streams, wherein the program chain information describes a number of a selectable audio stream and a number of a selectable sub-picture stream. Recording method. 20. The video object unit has a navigation pack arranged at the top of the video object unit. The navigation pack includes a PCI packet in which presentation control data of the video object unit is described and other navigation packs. Video object
13. The recording method according to claim 12, further comprising a DSI packet for searching for a unit, wherein the search data is stored in the DSI packet. 21. A means for encoding video data and audio data or a plurality of packetized data packs by encoding video data, audio data and sub-picture data, and wherein each data unit is a video data pack. Pack and audio
Means for preparing a data unit in which one unit of reproduction relating to a combination of packs or a combination of a video pack, an audio pack and a sub-picture pack is provided; And a means for preparing a large number of such data cells, and a means for generating a program chain information table, wherein the program chain information table has two or more corresponding to a part of a video story. program·
Means for generating a program chain information table defining a chain; recording the generated program chain information table in a data management area; and reproducing video object units constituting the cell one after another. Recording means for recording a large number of cells in the area to be reproduced by recording the data in an area; and a recording apparatus for recording reproduction data on an optical disc, wherein the program chain information table comprises: Program chain information that determines the reproduction of the program chain, and a search pointer corresponding to a program chain number for searching for the program chain information. Each of the program chain information includes the program chain information in the program chain. Change the playback order of data cells Is a cell reproduction information table in which cell addresses to be specified are described in the reproduction order. Each cell address is specified by the address of the first video object unit and the address of the last video object unit constituting the cell. A cell reproduction information table, content information on the number of cells constituting the program chain, and program chain navigation information, wherein the program chain navigation information is reproduced prior to the program chain. If there is a previous program chain to be played, the previous program chain number identifying the previous program chain, or the previous program chain if there is no program chain to be played before that program chain Program check Previous program chain information with a description of the program chain, and the next program chain that identifies the next program chain, if any, to be played after the program chain. If there is no program chain to be reproduced next to the chain number or the program chain concerned, next program chain information having a description of no next program chain; Recording device for recording data on an optical disc. 22. If there is a destination program chain to be reproduced in place of reproduction of the program chain, the program chain navigation information includes a program chain number for specifying the destination program chain. Alternatively, the destination program to be reproduced instead of continuing the reproduction of the program chain
22. The recording apparatus according to claim 21, further comprising destination program chain information including a description of the absence of the destination program chain when there is no chain. 23. A program defining at least two or more program chains corresponding to a part of a story.
A communication system comprising: a chain information table, transfer means for transferring a large number of data cells as reproduction target data, and reproduction means for reproducing the data cells using a program chain information table. Consists of a number of video object units arranged in playback order,
The object unit is a combination of a video and an audio pack or a combination of a video, an audio and a sub-picture pack and is defined in one playback unit. The transferred program chain information table is
It has program chain information that determines the reproduction of each program chain and a search pointer corresponding to a program chain number for searching for this program chain information. A cell reproduction information table in which cell addresses for specifying the reproduction order of the data cells in the chain are described in the reproduction order, wherein each cell address is the address of the first video object unit constituting the cell and the last A cell playback information table specified by the address of the video object unit of the above, content information on the number of cells constituting the program chain, and program chain navigation information. If there is a previous program chain to be played prior to the program chain, the program information is played back before the program chain number identifying the previous program chain or the program chain. If there is no program chain to be played, the previous program chain information with the description of no previous program chain, and if there is a next program chain to be played next to that program chain Shall include the next program chain number identifying the next program chain, or the next program chain description without a next program chain if there is no next program chain to be played after that program chain. Program chain information; and Retrieves the program chain information table and obtains program chain information by a search pointer corresponding to a designated program chain number, and obtains the program chain information according to the cell address described in the cell reproduction information table therein, in the description order. Search means for acquiring cells one after another; taking out video packs, audio packs or sub-picture packs from the video object units in these cells, decoding them, outputting them as video signals and audio signals, and specifying them Output means for reproducing the specified program chain; instruction means for indicating the next or previous program chain; and instruction for the next or previous program chain during reproduction of the designated program chain. When there was
Link means for linking to the program chain and reproducing the program chain if the presence or absence of the designated program chain has been confirmed by referring to the program chain information. A communication system characterized by the above-mentioned. 24. The program chain navigation information, if there is a destination program chain to be reproduced instead of continuing reproduction of the program chain, a program chain number for specifying the destination program chain. Alternatively, the destination program to be reproduced instead of continuing the reproduction of the program chain
If there is no chain, the program further includes destination program chain information including a description of the destination program chain, and the input means inputs an instruction of a previous, next, or destination program chain. Means for linking, when there is an instruction of a destination program chain by the instruction means, presence or absence of a next, or destination program chain before being instructed with reference to the program chain information 24. The communication system according to claim 23, wherein, when said is confirmed, said program chain is linked and reproduced.