JP3947210B2 - Reproduction system for reproducing video and audio from an optical disc, its reproduction method, and optical disc recording method - Google Patents

Description

  The present invention relates to a playback system for playing back video and audio from an optical disc, a playback method thereof, and an optical disc recording method.

In recent years, a moving image-compatible optical disk reproducing apparatus for reproducing an optical disk in which data such as video (video data) and audio (audio data) is digitally recorded has been developed, and is widely used as a reproducing apparatus such as movie software and karaoke. ing. Here, karaoke is music data in which music for accompaniment is recorded, music data that can be reproduced by the accompaniment music data, and can be sung by a general person as accompaniment, and the data Is a generic term for devices that play back images. (Hereinafter, in this specification, it is simply called karaoke.)
In recent years, various standards using CD as media have been proposed and established, but the standards based on CD are becoming limited in terms of data capacity. Various methods have been proposed, such as making the track pitch half that of the CD, and shortening the minimum pit length as a move toward increasing the density of the CD. As the density increases, the range of applications is expanding, and it is no longer impossible to record a digitally compressed video with two hours of audio on one side of a CD. Taking advantage of the ability to record video and audio on one side of a CD, it can be used as a karaoke disc, not to mention a movie. Patent Documents 1 to 3 are known as playback devices for karaoke discs.
JP-A-5-012831 Japanese Patent Laid-Open No. 2-116062 JP-A-6-332481

    However, although proposals regarding high-density recording media and theoretical data formats in various formats have been made, specific means in a disk playback device for karaoke has not been proposed, and a method suitable for playback of karaoke has been proposed. Suggestion is desired. That is, there is a demand for a reproduction system that suitably reproduces video and audio from an optical disc, a method for reproducing the same, and a method for recording an optical disc.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a reproduction system for suitably reproducing video and audio from an optical disc, a reproduction method thereof, and an optical disc recording method.

According to this invention,
In a playback system for playing a video title from an optical disc comprising a video manager and a video title set,
The video manager is composed of video manager information and a menu video object set,
The video title set is composed of video title set information and a video object set for a title.
In the title and menu video object sets, an audio stream, a sub-picture stream, and video data are stored.
The video object set for titles and menus is composed of cells, the cells are composed of video object units, and the video object unit is a combination of video, audio and sub-picture packs. And a program chain is defined as a set of the cells,
The video manager information includes a video management information management table, a title search pointer table, a menu program chain information unit table, and a video title set attribute table.
The video management information management table describes a start address of the menu video object set and a start address of the title search pointer table,
In the title search pointer table, a video title set number of the video title set and a start address of the video title set specified by the video title set number are described.
The video title set attribute table includes video title set attribute table information in which the number of video title sets is described, video title set attribute in which video title set attribute information is described, and the title Includes a video title set attribute search pointer to search for video title set attributes,
The menu program chain information unit table has a video manager menu language unit and a video manager menu language unit search pointer for searching the video manager menu language unit. In the manager menu language unit search pointer, the video manager menu language code and the start address of the video manager menu language unit are described.
The video manager menu language unit includes a menu program chain information for defining a menu program chain for menu reproduction, and a menu program chain information search pointer for searching the menu program chain information. Have
The video title set information includes a title set information management table and a title program chain information table,
In the title set information management table, the start address of the video object set for title, the number of audio streams of the video title set, and the audio stream attributes of the video title set are described. ,
Similarly, the video title set attribute information describes the number of the audio streams and the audio stream attributes of the video title set,
The title program chain information table includes a title program chain information for defining a title program chain for title reproduction, and a search chain corresponding to a program chain number for searching the title program chain information. Have a pointer,
The title program chain information includes program chain general information, a cell playback information table in which cell playback information is described in playback order to specify the playback order of the cells in the title program chain,
The program chain general information describes program chain audio stream control information, and the program chain audio stream control information describes audio stream numbers that can be used in the program chain. ,
The cell playback information describes the address of the first video object unit and the address of the last video object unit constituting the cell,
The playback system includes:
Has a language code specific to the playback system,
Obtaining the menu program chain information unit table and comparing the video manager menu language code in the video manager menu language unit search pointer with the unique language code to determine the video When the manager menu language code matches the unique language code, the video manager menu language unit is acquired, the menu program chain is reproduced, and the title search pointer table is used. The video title set is searched, the cell playback information table is obtained from the title program chain information, the title program chain is played back, and the video stream is input in response to the change input of the audio stream.・The number of streams of the audio stream is obtained from the title set information and compared with the change destination stream number. If the stream number is smaller than the number of streams, the change destination stream number is the program chain audio An acquisition means for comparing an audio stream number that can be used in the program chain in the stream control information and extracting the audio stream by the change destination stream number if the change destination stream number is usable;
Decoding video, audio and sub-picture streams extracted from the video pack, audio pack and sub-picture pack included in the video object unit in the cell using the video title set attribute; Output means for outputting video signals and audio signals;
A playback system is provided.

Moreover, according to the present invention,
In a playback method for playing a video title from an optical disc comprising a video manager and a video title set,
The video manager is composed of video manager information and a menu video object set,
The video title set is composed of video title set information and a video object set for a title.
In the title and menu video object sets, an audio stream, a sub-picture stream, and video data are stored.
The video object set for titles and menus is composed of cells, the cells are composed of video object units, and the video object unit is a combination of video, audio and sub-picture packs. And a program chain is defined as a set of the cells,
The video manager information includes a video management information management table, a title search pointer table, a menu program chain information unit table, and a video title set attribute table.
The video management information management table describes a start address of the menu video object set and a start address of the title search pointer table,
In the title search pointer table, a video title set number of the video title set and a start address of the video title set specified by the video title set number are described.
The video title set attribute table includes video title set attribute table information in which the number of video title sets is described, video title set attribute in which video title set attribute information is described, and the title Includes a video title set attribute search pointer to search for video title set attributes,
The menu program chain information unit table has a video manager menu language unit and a video manager menu language unit search pointer for searching the video manager menu language unit. In the manager menu language unit search pointer, the video manager menu language code and the start address of the video manager menu language unit are described.
The video manager menu language unit includes a menu program chain information for defining a menu program chain for menu reproduction, and a menu program chain information search pointer for searching the menu program chain information. Have
The video title set information includes a title set information management table and a title program chain information table,
In the title set information management table, the start address of the video object set for title, the number of audio streams of the video title set, and the audio stream attributes of the video title set are described. ,
Similarly, the video title set attribute information describes the number of the audio streams and the audio stream attributes of the video title set,
The title program chain information table includes a title program chain information for defining a title program chain for title reproduction, and a search chain corresponding to a program chain number for searching the title program chain information. Have a pointer,
The title program chain information includes program chain general information, a cell playback information table in which cell playback information is described in playback order to specify the playback order of the cells in the title program chain,
The program chain general information describes program chain audio stream control information, and the program chain audio stream control information describes audio stream numbers that can be used in the program chain. ,
The cell playback information describes the address of the first video object unit and the address of the last video object unit constituting the cell,
In the playback method,
The menu program chain information unit table is acquired, and the video manager menu language unit in the video manager menu language unit search pointer and the language code of the language code specific to the playback method are obtained. In comparison, if the video manager menu language code matches the unique language code, the video manager menu language unit is acquired, and the program chain for the menu is played back,
Searching the video title set using the title search pointer table, obtaining the cell playback information table from the title program chain information, playing back the title program chain,
In response to the change input of the audio stream, the number of streams of the audio stream is obtained from the video title set information and compared with the change destination stream number, and the stream number is smaller than the number of streams. For example, the change destination stream number is compared with the audio stream number that can be used in the program chain in the program chain audio stream control information, and if the change destination stream number is usable, the change destination stream number Take an audio stream by number,
Decoding video, audio and sub-picture streams extracted from the video pack, audio pack and sub-picture pack included in the video object unit in the cell using the video title set attribute; There is provided a reproduction method characterized by outputting as a video signal and an audio signal.

Furthermore, according to the present invention,
Prepare video data, audio stream and sub-picture stream for menu, and video data, audio stream and sub-picture stream for title,
The structure of the title video object set from the title video data, audio stream and sub-picture stream, and the structure of the menu video object set from the menu video data, audio stream and sub-picture stream In this preparation, the title and menu video object sets are made up of cells, the cells are made up of video object units, and the video object units are made up of video, audio and sub-pictures. A combination of video packs, which is defined as one playback unit, a program chain is defined as a set of the cells,
Title set information management table in which a start address of the title video object set and a start address of the title program chain information table are described, and a title program that defines a program chain for reproducing the title A chain information table is prepared, video title set information including the title set information management table and the title program chain information table is prepared, and the video title set information and the title video object are prepared. • Configure a video title set with a set,
A video manager information management table in which a start address of the menu video object set and a start address of the title video object set are described, and a menu program defining a program chain for the menu playback A chain information unit table is prepared, video manager information including the video manager information management table and the menu program, chain information unit table is prepared, and the video manager information and the menu video object are prepared. Configure a video manager with a set,
In an optical disk recording method for physically recording the video manager and the video title set on an optical disk,
The video manager information includes a title search pointer table and a video title set attribute table,
In the video management information management table, a start address of the title search pointer table is described,
In the title search pointer table, a video title set number of the video title set and a start address of the video title set specified by the video title set number are described.
The video title set attribute table includes video title set attribute table information in which the number of video title sets is described, video title set attribute in which video title set attribute information is described, and the title Includes a video title set attribute search pointer to search for video title set attributes,
The menu program chain information unit table has a video manager menu language unit and a video manager menu language unit search pointer for searching the video manager menu language unit.
In the video manager menu language unit search pointer, a video manager menu language code and a start address of the video manager menu language unit are described.
The video manager menu language unit includes menu program chain information for determining playback of a menu program chain, and a menu program chain information search pointer for searching the menu program chain information.
In the title set information management table, the number of audio streams of the video title set and audio stream attributes of the video title set are described.
Similarly, the video title set attribute information describes the number of the audio streams and the audio stream attributes of the video title set,
The title program chain information table has program chain information for determining the reproduction of the title program chain and a search pointer for searching for the program chain information.
The program chain information includes program chain general information, a cell playback information table in which cell playback information is described in playback order to specify the playback order of the cells in the title program chain,
The program chain general information describes program chain audio stream control information, and the program chain audio stream control information describes audio stream numbers that can be used in the program chain. ,
The cell playback information includes an address of the first video object unit and an address of the last video object unit constituting the cell,
Acquires the menu program chain information unit table during playback, and compares the video manager menu language code in the video manager menu language unit search pointer with the language code specific to the playback device. When the video manager menu language code matches the unique language code, the video manager menu language unit is obtained, the menu program chain is played, and the audio stream is changed and input. In response, the number of streams of the audio stream is obtained from the video title set information and compared with the change destination stream number. If the stream number is smaller than the number of streams, the change destination stream number is Program -Compared with the audio stream number that can be used in the program chain in the chain audio stream control information. If the change destination stream number is usable, the audio stream is extracted with the change destination stream number and the audio is extracted. An optical disk recording method is provided, wherein the video manager and the video title set are recorded so as to output a signal.

  ADVANTAGE OF THE INVENTION According to this invention, the reproduction | regeneration system which can reproduce | regenerate video and audio suitably from an optical disk, its reproduction | regeneration method, and the recording method of an optical disk can be provided.

  Hereinafter, an optical disk and an optical disk reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows a block of an optical disk reproducing apparatus for reproducing data from an optical disk according to one embodiment of the present invention, FIG. 2 shows a block of a disk drive unit for driving the optical disk shown in FIG. 4 and 4 show the structure of the optical optical disc shown in FIGS.

  As shown in FIG. 1, the optical disc playback apparatus includes a key operation / display unit 4, a monitor unit 6, and a speaker unit 8. Here, the recorded data is reproduced from the optical disc 10 when the user operates the key operation / display unit 4. 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 using a video signal, and the speaker unit 8 generates sound using the audio signal.

  As already known, the optical disk 10 has various structures. As this optical disk 10, for example, as shown in FIG. 3, there is a read-only disk on which data is recorded at a high density. As shown in FIG. 3, the optical disc 10 includes a pair of composite layers 18 and an adhesive layer 20 interposed between the composite disc 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 disposed so that the light reflecting layer 16 is in contact with the adhesive layer 20. The optical disc 10 is provided with a center hole 22, and a clamping region 24 for holding the optical disc 10 at the time of rotation is provided around the center holes 22 on both sides. The spindle of the spindle motor 12 shown in FIG. 2 is inserted into the center hole 22 when the disc 10 is loaded in the optical disc apparatus, and the disc 10 is clamped in its clamping region 24 while the disc is rotated. Is done.

  As shown in FIG. 3, the optical disk 10 has an information area 25 in which information can be recorded on the optical disk 10 around the clamping areas 24 on both sides thereof. Each information area 25 is defined as a lead-out area 26 in which information is not normally recorded in the outer peripheral area, and a lead-in area 27 in which information is not normally recorded in the inner peripheral area in contact with the clamping area 24. Further, a data recording area 28 is defined between the lead-out area 26 and the lead-in area 27.

  In the recording layer 16 of the information area 25, tracks are usually formed continuously in a spiral as data recording areas, and the continuous tracks are divided into a plurality of physical sectors. A serial number is assigned and data is recorded with reference to this sector. The data recording area 28 of the information recording area 25 is an actual data recording area. As will be described later, reproduction information, video data, sub-picture data, and audio data are similarly pits (that is, changes in physical state). It is recorded as. In the read-only optical disk 10, a pit row is formed in advance on a transparent substrate 14 with a stamper, a reflective layer is formed on the surface of the transparent substrate 14 on which the pit row is formed, and the reflective layer is formed as a recording layer 16. Will be. Further, in this read-only optical disc 10, a groove as a track is usually not provided, 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 apparatus 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, a video decoder unit 58, and an audio decoder. Section 60, sub-picture decoder section 62, D / A and data reproduction section 64.

  As shown in FIG. 2, the disk drive unit 30 includes a motor drive circuit 11, a spindle motor 12, an optical head 32 (ie, an optical pickup), a feed motor 33, a focus circuit 36, a feed motor drive circuit 37, and a tracking circuit 38. The head amplifier 40 and the servo processing circuit 44 are provided. The optical disk 10 is placed on a spindle motor 12 driven by a motor drive circuit 11 and rotated by the spindle motor 12. An optical head 32 that irradiates the optical disk 10 with a laser beam is placed under the optical disk 10. The optical head 32 is placed on a guide mechanism (not shown). A feed motor drive circuit 37 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 that faces the optical disk 10. The objective lens 34 is moved along its optical axis according to the drive signal supplied from the focus circuit 36.

  In order to reproduce data from the optical disc 10 described above, the optical head 32 irradiates the optical disc 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 in accordance with the drive signal supplied from the tracking circuit 38. The objective lens 34 is finely moved along the direction of the optical axis in accordance with the drive signal supplied from the focusing circuit 36 so that the focal point thereof is positioned on the recording layer 16 of the optical disc 10. As a result, the laser beam forms a minimum beam spot on the spiral track (ie, pit row), and the track is tracked with the light beam spot. The laser beam is reflected from the recording layer 16 and returned to the optical head 32. The optical head 32 converts the light beam reflected from the optical disc 10 into an electrical signal, and this electrical signal is supplied from the optical head 32 to the servo processing circuit 44 via the head amplifier 40. The servo processing circuit 44 generates a focus signal, a tracking signal, and a motor control signal from the electrical signal, and supplies these signals to the focus circuit 36, the tracking circuit 38, and the motor drive circuit 11, respectively.

  Accordingly, the objective lens 34 is moved along its optical axis and the radial direction of the optical disc 10, its focal point is positioned on the recording layer 16 of the optical disc 10, and the laser beam forms a minimum beam spot on the spiral track. Further, the spindle motor 12 is rotated at a predetermined rotational speed by the motor drive circuit 11. As a result, the pit row of the optical disc 10 is tracked with the 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 head movement signal is supplied from the servo processing circuit 44 to the feed motor drive circuit 37, and this circuit 37 supplies the drive signal to the feed motor 33. Accordingly, the feed motor 33 is driven, and the optical head 32 is moved along the radial direction of the optical disc 10. Then, a predetermined sector formed on the recording layer 16 of the optical disc 10 is accessed by the optical head 32. The reproduction 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 reproduction 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 system ROM and RAM unit 52. The stored reproduction 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 divided into a video decoder unit 58 and an audio decoder unit 60, respectively. And output to the sub-picture decoder unit 62 for decoding. The decoded video data, audio data, and sub-picture data are converted into video signals and audio signals as analog signals by the D / A and reproduction processing circuit 64, and the video signals are converted to the monitor 6 and the audio signals are converted to speakers. Part 8 is supplied to each. As a result, the video is displayed on the monitor unit 6 by the video signal and the sub-picture signal, and the sound is reproduced from the speaker unit 8 by the audio signal.

  Next, the structure of the logical format of the optical disk apparatus shown in FIG. 1 will be described. Currently, the optical format of the optical disc apparatus 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. 4 to 11, and from FIG. A new version obtained by improving the initial version will be described with reference to FIG. The detailed operation of the optical disc apparatus shown in FIG. 1 will be described later in detail together with an initial version of the optical disc 10 and a logical format related to a new version obtained by improving the initial version.

  FIG. 4 shows the structure of the logical format according to the initial version. That is, the data recording area 28 from the lead-in area 27 to the lead-out area 26 of the optical disc 10 shown in FIG. 1 has a volume structure as shown in FIG. 4 that complies with ISO9660 as a logical format. This volume structure includes a hierarchical volume management information area 70 and a file area 80. The volume management information area 70 corresponds to logical block numbers 0 to 23 determined according to ISO9660, and a system area 72 and a volume management area 74 are allocated. The system area 72 is not normally defined as a free area, but is provided for an editor who edits data to be recorded on the optical disk 10, for example, and realizes driving of the optical disk apparatus according to the editor's intention. A system program is stored as necessary. The volume management area 74 includes volume management information for managing files 78 such as a disk information file 76 (hereinafter simply referred to as a disk information file 76), a movie file, or a music file in the file area 80, that is, The file recording position, recording capacity, file name, and the like are stored. In the file area 80, files 76 and 78 having a file number 0 to a file number 99 designated by logical block numbers after the logical block number 24 are arranged, and the file 76 having the file number 0 is allocated as the disk information file 76. The files 78 having the file numbers 1 to 99 are allocated as movie files, that is, video files or music files.

  As shown in FIG. 5, the disc information file 76 is composed of a file management information area 82 and a menu video data area 84. In the file management information area 82, selectable sequences recorded on the entire optical disc 10, That is, file management information for selecting a video or audio title is described. Here, in particular, in the commercial karaoke optical disk 10, the sequence corresponds to a karaoke genre, for example, enka, pop, rock, and a program as a subordinate concept of the sequence described later has a specific song name. Applicable. In the karaoke optical disk 10 having a small number of songs, the sequence may be determined so that the song name is directly designated.

  In the menu video data area 84, image data of a menu screen for displaying a selection menu for selecting a title, for example, a genre of a karaoke song title and a song title of the genre is stored as a menu data cell 90 in units of cells. Has been. As will be described in detail later, the menu video data in the menu video data area 84 is divided into units of a necessary size according to the purpose, and continues from # 1 in the order of recording in the menu video data area 84 of the disc 10. I number of menu cells 90 to which numbers are assigned. The menu cell 90 stores video data, sub-picture data, or audio data relating to selection of a movie or audio title, selection of a program for each title, and the like.

  As shown in FIG. 5, the file management information area 82 includes a disk configuration information area 86 for storing disk configuration information (DSINF: Disc Structure Information), and a menu configuration information area for storing menu configuration information (MSINF: Menu Structure Information). There are three types of information areas 87 and a cell information table (MCIT: Menu Cell Information Table) 88 for storing cell information, 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, that is, playback files 78 (described as a parameter DSINF within a range of 1 to 99). The number of sequences existing in each file 78 (referred to as a series of data groups of video data including video, audio, sub-pictures, etc. as described above. Also, hereinafter referred to simply as a sequence and described as a parameter FSINF. ), The number of audio streams (described as parameter FNAST), the audio information (described as parameter FACODE) specifying the audio stream (described as parameter FACODE), and the number of programs. Concerning (Described as a parameter TSINF.) Title information configuration information about the files on the disk, such as are described.

  In the area 87 of menu configuration information (MSINF), the number of menu cells 90 of the menu video data area 84 recorded in the disc information file 76 (described as parameter NOMCEL) exists in the disc. Title menu cells 90 constituting a series of menu video data for selecting a title (in the case of karaoke as described later, a selection item on a menu screen for specifying a music genre is handled as a title). Information such as the start cell number (described as parameter TMSCEL) is described. Further, the menu configuration information (MSINF) describes an audio menu start cell number (ADMSCEL) that specifies the start number of the audio menu. As described later, the audio menu identified by this start number is displayed with respect to the microphone volume, echo magnitude, tone level, sub audio level, and left / right balance. By specifying the characteristics, the characteristics of the corresponding units in the reproduction processing unit 64 can be adjusted. The menu structure information (MSINF) includes a program menu (similarly, in the case of karaoke as described later, the program corresponds to each karaoke song, and the program name is specified on the menu screen). The program menu start cell number (PMSCEL) specified by the start cell number is described.

  The menu cell information table 88 defines a set of i cell information areas 89 in which cell information necessary for reproduction of each menu cell 90 is described in the order of cell numbers. In the cell information table 88, the position of the cell 90 in the file 76 (described by the logical block number offset from the beginning of the file as the parameter MCSLBN), the size (described by the number of logical blocks as the parameter MCNLB), and the like. Is described. Here, the disk 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.

  In the optical disk for karaoke, a menu screen for selecting a song using the menu file 76 described above is created. That is, as the menu cell 89, a karaoke genre, that is, a main menu cell in which enka, pops, and rock are displayed, and a plurality of submenu cells in which genres selected in the main menu are displayed. .

  One or more titles of music data or movie data are stored in movie files and music files 78 corresponding to file numbers 1 to 99. In an optical disk for karaoke, music data of a plurality of titles is stored in a music file. As shown in FIG. 6, the file 78 includes specification information for data included in the file 78, that is, a file management information area 101 in which management information (for example, address information and playback control information) is described. The file 78 has a file structure including a video data area 102 in which video data of the file 78 (video, audio, sub-video data, etc. are simply referred to as video data) is described. Similar to the menu cell 90 of the disc information file 76, the video data is divided into cell units in the video data area 102, and the video data is arranged as j video data cells 105. As already described, if the file is movie data, it is movie data corresponding to the story of one title movie, and if it is karaoke, it corresponds to one volume in a certain karaoke series. The disc information file 76 corresponds to control data for reproducing the movie or karaoke, and the control information is arranged hierarchically according to a predetermined format.

  Usually, movie data or audio data of a certain title is represented as a set of continuous sequences 106. For example, a movie story is represented by a continuous sequence 106 corresponding to “start”, “approval”, “turn”, and “conclusion”. Therefore, the video data area 102 of each file 78 is defined as a set of sequences 106 as shown in FIG. In commercial karaoke, the sequence corresponds to the genre of music. Each sequence 106 includes a plurality of programs. Each program corresponds to various scenes of the movie story if it is a movie, and corresponds to karaoke data of sub-pictures corresponding to audio, video and lyrics of a certain song name in karaoke. In the case of household karaoke with a small number of songs in the file 78, it may be specified that the direct sequence corresponds to a karaoke song. Each video program 107 is composed of a plurality of video data cells 105. As shown in FIG. 8, each video cell 105 has a group of one image group (GOP: Group of Pictures) in which a control pack (DSI) 92, a main video pack 93, a sub video pack 95, and an audio pack 98 are combined. Has been configured. The configuration of the video cell 105 is substantially the same as that of the menu cell 90, and the video data 102 is a moving image (movie) or audio (audio) compressed in accordance with a compression standard such as MPEG standard (Moving Picture Expert Group). In addition, data such as sub-pictures are recorded in a data format corresponding to the MPEG2 system layer. That is, the video data 102 is a program streamer defined by the MPEG standard. Furthermore, each pack 92, 93, 95, 98 has a pack structure composed of a pack header 97 and a packet 99 corresponding to the pack. Here, karaoke is assumed to be a type of karaoke in which lyrics are displayed on the background video and the song flows, but a karaoke of the type in which the background video is a still image and the lyrics are displayed as a sub-video, Alternatively, the main video may not be displayed only by displaying lyrics and reproducing sound.

  The file management information area 101 includes a file management table (FMT: File Management Table) 113, a sequence information table (SIT: Sequence Information Table) 114, a cell information table (CIT: Cell Information Table) 115, and the like. The video data cells in the video data area 102 are sequentially numbered from # 1 in the order of recording on the disc, and the cell information and information related to the cell are described in the cell information table 115 in association with the cell number. ing. That is, the cell information table 115 is defined as a set of areas 117 in which j pieces of cell information (CI) in which information necessary for reproduction of video data cells is described in the order of cell numbers are stored. ) Describes information such as the position, size, and playback time of the cell in the file 78. Here, in karaoke, a certain cell in the file 78 corresponds to the sub-picture, main image and audio data corresponding to the first lyrics of a certain song, and the next cell is the second cell of the song. The sub-picture corresponding to the lyrics, the main picture, and the audio data may be used, and the next cell may correspond to the sub-picture, the main picture, and the audio data corresponding to the third lyric of the song. .

  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 in units according to the purpose are described by parameters. That is, the cell information (CI) includes cell type information (CCAT) indicating the content of the video cell such as whether the video cell is a movie, karaoke or interactive menu, and cell playback information indicating the total playback time of the video cell. (CTIME), cell cell start position information (CSLBN) indicating the start position of the video cell, that is, the start address, cell size information (CNLB) indicating the size of the video cell, and the like.

  The sequence information table 114 is defined as a set of areas 116 in which i pieces of sequence information (SI) describing the order of selecting and reproducing the cells 105 within the range specified for each sequence 106 are stored. In the sequence information (SI), the playback order of the video cells 105 recorded in the sequence 106 and playback control information related to playback are described. 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. 10, the sequence information area 116 describes the playback order of the video cells, sequence information, and the like. The sequence information (SI) number matches the sequence number, and is assigned to the sequence information table 114 in the order of the number. This sequence information 116 includes sequence type information (SCAT), number of constituent programs (SNPRG), sequence playback time (STIME), number of connected sequences (SNCSQ), sequence number list information (SCSQN), and sequence control information (SCINF). It is configured. The sequence type information (SCAT) describes whether the sequence type is movie or karaoke. The number of programs constituting the sequence is described in the number of constituent programs (SNPRG), and the total playback time of the sequence is described in the sequence playback time (STIME). In the sequence control information (SCINF), the reproduction order of the cells constituting the sequence, the cells constituting the program in the sequence, and the program number identifying the program are described. Here, the program in the sequence corresponding to each karaoke song can specify the first cell of the program by referring to this sequence control information (SCINF), and can reproduce the karaoke from the cell. . It should be noted that a plurality of next candidate songs selected as menu cells may be displayed by selecting the last cell among a plurality of cells constituting each program so that the next candidate can be selected.

  A file management table (FMT) 113 shown in FIG. 11 shows specification information regarding the video file 78. In this 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 played back by the optical disc playback apparatus loaded with the optical disc are described. ing. In this file identifier (FFID), for example, an identifier for identifying a movie file is described. The file management table 113 includes a sequence information table (SIT) 114 and a cell information table (SIT) 115 having start addresses (FSASIT, FSACIT), sequence information (SI) and cell information ( CI) number (FNSQ, FNCEL), and further, the start address (FSAESI) of each sequence 116 and the video data in the video data area 102 are indicated by the relative distance from the head of the sequence information table (CIT) 114. A start address (FSADVD) for performing data, data attributes as information for reproducing each data, and the like are described. Here, in the start address (FSASIT) of the sequence information table 114, the start address of the sequence information table 114 from the head of the file 78 to which the file management table 113 belongs is described by an offset block logical number, and the sequence information start address ( In FSAESI), the start address and the size of each sequence information in the sequence information table 114 are described by the number of sequences in the sequence description sequence. The start address is described by an offset byte number from the top of the sequence information table 114.

  Further, the file management table (FMT) 113 describes the number of audio streams (FNAST) describing the number of audio streams and the audio stream attribute (FAATR) related to the attributes of the audio stream. Here, the audio stream is a stream of audio data, and if it is movie data, there are a master stream corresponding to the background sound and a slave stream corresponding to the audio portion of the movie. , Japanese voice and other languages can be prepared and placed. In karaoke, the master stream corresponds to audio data in which performances such as orchestra are entered, and the slave stream corresponds to audio data related to male vocal sound or female vocal sound. In addition, an audio compression mode such as Dolby AC3 or linear PCM audio is described as the audio stream attribute (FAATR), an audio mode such as monaural or stereo is described, and an audio type such as A case where it is not specified or a language is included is described. In the audio stream attribute (FAATR), MIX related to mixing, a master stream number, and a specific code are described. In MIX, an audio stream is an independent stream, that is, a master stream that cannot be mixed, or a stream that can be mixed and can be played back independently, that is, a master stream, or can be mixed. It describes whether the stream cannot be reproduced independently, that is, whether it is a slave stream. The master stream number describes the number of the audio stream of the master stream to be mixed when the audio stream is a slave stream, and describes that there is no target audio stream when the audio stream is an independent stream or a master stream. Furthermore, when the specific code describes that the audio type is a language or an audio stream including a language, the language described in a separately defined language table, for example, a code such as English, Japanese, German, etc. A number is described.

  Next, with reference to FIG. 1 again, the reproduction operation of karaoke data from the optical disk 10 having the logical format shown in FIGS. 4 to 11 will be described. In FIG. 1, a solid line arrow between blocks indicates a data bus, and a broken line arrow indicates a control bus.

    In the optical disk apparatus shown in FIG. 1, when the power is turned on, the system CPU section 50 reads the initial operation program from the system ROM and RAM 52 and operates the disk drive section 30. Therefore, the disk drive unit 30 starts a read operation from the lead-in area 27 and reads volume management information from the volume management information area 74 of the volume management area 70 following the lead-in area 27. That is, the system CPU unit 50 gives a read command to the disk drive unit 30 in order to read the 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 out 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, and stores predetermined information in the system ROM & RAM unit 52. Transfer to a location and save.

    Next, the system CPU unit 50 acquires the disk information file 76 corresponding to the file number 0 from the system ROM & RAM unit 52 with reference to the previously acquired information on the recording position and recording capacity of each file. That is, the system CPU unit 50 gives a read command to the disk drive unit 30 by referring to the recording position and recording capacity information of each file obtained from the system ROM and RAM unit 52, and the file number is The file management information of the disk information file 76 which is 0 is read and stored in the data RAM unit 56 via the system processor unit 54. Similarly, the acquired information is transferred to a predetermined location in the system ROM & RAM unit 52 and stored.

  The system CPU unit 50 uses the disk configuration information 86, the menu configuration information 87, and the cell information table 88 of the file management information of the disk information file 76 to reproduce the sequence (title) selection menu of the menu video data 84, Display on the screen as described later. That is, a main menu screen for displaying the karaoke genre is displayed. When the genre is specified in the main menu using the key operation and display unit 4, the sequence number is designated. Thereafter, a submenu screen for displaying the song title is displayed. When the title of the song title on the submenu screen is selected, the program number is designated. As a result, the file number to which the selected sequence belongs, the sequence information, and the program in the sequence are specified.

  Next, the operation until the designated video file 78 is acquired and the video data 102 is reproduced will be described. In order to obtain sequence information for the designated sequence number, first, using the recording position and recording capacity of each video file 78 obtained from the volume management information 74, a program to be played back, that is, a video file to which the sequence belongs. 78 file management information 101 is read out and stored in the data RAM unit 56 in the same manner as the acquisition of the disk information file 76 described above.

  The system CPU unit 50 acquires sequence information to which the designated program belongs from the sequence information table 114 of the file management information 101 stored in the data RAM unit 56, and is necessary for reproducing the data and the program of the sequence. The cell information 117 in the cell information table 115 is transferred to the system ROM & RAM unit 52 and stored.

  The cell information to be reproduced first is obtained from the cell reproduction order information of the program in the sequence information obtained in this way, and the disc drive unit 30 receives the video data reproduction start address and size in the cell information. A read command from the target address is given. The disk drive unit 30 drives the optical disk 10 in accordance with the read command, reads data at a target address from the optical disk 10, and sends it 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 data (video, audio, sub-picture, reproduction information, etc.) based on the header information added to the data. Then, the data is transferred to the decoder units 58, 60 and 62 corresponding to the determined type.

    Each decoder unit 58, 60, 62 decodes data according to the respective data format and sends the data to the D / A & reproduction processing unit 64. The D / A & playback processing unit 64 converts the decoded digital signal into an analog signal, performs mixing processing, and outputs the result to the monitor unit 6 and the speaker unit 8.

    In the data type discrimination process, 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 unit 56. Is done. This reproduction information is referred to as necessary by the system CPU unit 50 and used for monitoring when reproducing the video data.

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

  Further, a circuit related to audio control of audio in the D / A & reproduction processing unit 64 will be described in more detail with reference to FIG. In FIG. 12, the key operation & display unit 4 is illustrated as being separated into a display unit 4A and a key operation unit 4B.

  As described above, the video data optically detected from the optical disc 10, that is, the RF signal, is separated into video data and audio data by the system processor 58, and the video data is decoded by the video decoder 58 to obtain a video reproduction signal. Is output as On the other hand, the audio data is input to the audio decoder unit 60, decoded into an audio signal, divided into a main audio signal corresponding to the master stream and a sub audio signal corresponding to the slave stream, and individually output. The tone of the main audio signal is adjusted by the audio tone control unit 126 and input to the audio addition / switching unit 127. Further, the sub audio signal is adjusted to an appropriate signal amplitude by the sub audio signal amplitude adjusting unit 124, and then the sub audio signal L / R balance adjusting unit is used to adjust the volume balance between L (left) and R (right). 125 is input. From a microphone (not shown), a microphone sound signal is input to the sound input unit 120 from the microphone, an external sound signal is input to the reverberation effect control unit 129 from the sound input unit 120, and echo processing is performed to control the reverberation effect. This is done in part 129. The external audio signal subjected to the echo processing is a voice addition / switching unit to which the main audio signal output from the audio tone control unit 126 and the sub audio signal output from the sub audio signal L / R balance adjustment unit 125 are input. 127 is output. In the audio adding / switching unit 127, the main audio signal, the auxiliary audio signal, and the external audio signal are added, switched as necessary, and finally output as a stereo audio signal. Each part of the circuit shown in FIG. 12 is controlled by the system CPU unit 50, and is connected to the display unit 4A for displaying the operation state and the key input unit 4B for receiving instructions from the user via the system CPU unit 50. Yes.

  The operation of the circuit shown in FIG. 12 will be described with reference to the flowchart shown in FIG. As described above, the system CPU 50 reads the file management information recorded in a predetermined area of the disc in order to obtain all the information necessary for performance including the sequence use via the system processor unit 54. The read information is stored in the system ROM & RAM 52 until the power of the playback device is cut off (step S1).

  When playing back a disc, the sequence usage (SCAT) is first analyzed to determine whether or not it is in karaoke mode. If it is other than the karaoke mode, the operation of the disk device is set according to the mode (steps S2 and S3).

  If the karaoke mode is selected, the LED 4 or the like indicates that the karaoke mode is selected on the display unit 4A, and the performance start point of the first song is searched, and a pause state is set at that position (step S3, step S3). S4). 14A, 14B, and 14C, an adjustment screen such as a microphone volume can be displayed on the monitor 6 by operating the key input unit 4B. That is, when the microphone volume is adjusted while viewing the adjustment screen as shown in FIG. 14A, the adjustment command is given to the microphone audio input unit 120 via the key input unit 4B, and the amplification factor of the input microphone audio signal changes. When the echo is adjusted while viewing the adjustment screen as shown in FIG. 14B, the adjustment command is given to the reverberation effect control means 129 via the key input unit 4B, and the echo of the input microphone sound signal is changed. . 14C, when the key control corresponding to the pitch of the sound is adjusted, the adjustment command is given to the sound tone control unit 126 via the key input unit 4B, and the tone of the main sound signal is changed. . Further, as shown in FIGS. 14D and 14E, when the sub-audio level and its left / right balance are adjusted while viewing the adjustment screen, the adjustment command is sent to the sub-audio signal amplitude adjusting unit 124 and the sub-audio signal via the key input unit 4B. An L / R balance adjustment unit 125 is provided to adjust the reproduction audio level of the sub audio and the left / right balance thereof. As shown in FIG. 14F, the reset command is sent to the microphone sound input unit 120, the reverberation effect control means 129, the sound tone control unit 126, the sub sound according to the screen for canceling the adjustment and the release thereof as shown in FIG. The signal amplitude adjustment unit 124 and the sub audio signal L / R balance adjustment unit 125 are supplied to the microphone audio input unit 120, the reverberation effect control means 129, the audio tone control unit 126, the sub audio signal amplitude adjustment unit 124, and the sub audio signal L. The / R balance adjustment unit 125 is restored to the standard state before adjustment. If there is such an adjustment, after this adjustment, it is confirmed whether or not there is menu information, in particular, a menu for all songs (step S5). Whether or not to display the menu is confirmed (step S6). When displaying the menu of all the songs (step S7), the menu is displayed, and the performance song name is selected from the display (step S9). Here, it is obvious that the menu of all songs may be composed of a main menu and a plurality of submenus as described above. Here, when a performance music title is not selected, it will return to step S5 again. If there is no menu in step S5 or if menu non-display is selected in step S6, the music title menu is not displayed and the music is specified by code designation in the music list (step S8). Step S9). As described above, the selection of the performance piece corresponds to selection of a program in a certain sequence, and the first cell in the program is searched by designating this program. In this way, interactive karaoke operations can be performed in a paused state. When the performance piece is selected, it is confirmed whether or not the performance start key is pressed (step S10). If the performance start key is not pressed, the process returns to step S5 again. When the performance start key is pressed, the designated song is searched and the performance is started (step S11). Thereafter, when the performance is completed, the pause mode is maintained at the start position of the next song, and the process returns to step S5 (step S13). The end of the performance is the end of the program selected as described above, and corresponds to the reproduction of the cell data in the program. When the performance is finished, the adjustment command that has already been set before the performance is reset unless the hold for holding the adjustment operation is pressed in the key operation unit 4B. That is, at the end of the performance, a reset command is generated from the key input unit 4B, and the reset command is generated by the microphone sound input unit 120, the reverberation effect control means 129, the sound tone control unit 126, the sub sound signal amplitude adjustment unit 124, and the sub sound signal. The L / R balance adjustment unit 125 is supplied to the microphone sound input unit 120, the reverberation effect control unit 129, the sound tone control unit 126, the sub sound signal amplitude adjustment unit 124, and the sub sound signal L / R balance adjustment unit 125. The previous standard state is restored. This reset command may be generated when the name of the next song to be sung is selected on the next menu screen, or is kept on hold between songs of the selected genre, and the genre is changed. At this time, a reset command may be generated.

  If the performance has not ended, for example, if the user wishes to sing again during the performance and the singing key is pressed (step S14), the process returns to step S11 again. In this re-sung mode, the first data cell of the already selected program is designated as the reproduction cell, and the data cells are reproduced one after another. If the tone or the reverberation key is not pressed during the performance and the tone or the reverberation key is pressed (step S15), the processing corresponding to the pressed key is performed and the display screen is switched and a predetermined time later. The original playing screen, that is, the process returns to step S12. When the sub audio level or the balance key is pressed (step 16), processing corresponding to the pressed key is similarly performed and the display screen is switched, and the original playing screen after a predetermined time, That is, the process returns to step S12.

  On the menu screen described above, it is possible to select not only the main sound such as a performance corresponding to the title but also the sub sound. For example, only an orchestra may be used as the main audio corresponding to the master stream, and a vocal that serves as a model for singing corresponding to the sub audio may be selected as a slave stream in addition to the master stream. By such a selection, it is possible to select only performance of karaoke or mixing vocal sounds and performing with voice guidance.

  Furthermore, if male vocals are assigned to the vocal sound L (left) and female vocals are assigned to the R (right), for example, when a male sings a duet song alone, only the vocal sound R (right) is mixed with the orchestra. I can sing. When a woman is duet alone, only L (left) male vocals should be mixed. Such a setting can be realized by selecting a slave stream from the menu screen in addition to the master stream.

  In addition, in karaoke mode, you can adjust the tone (key) of the audio signal of the orchestra and add a reverberation effect (echo) to the external input sound from the microphone, and the microphone volume, The reverberation level, tone, sub audio level, balance, etc. are displayed as symbols on the screen. In addition, it is a function that is particularly necessary in the case of karaoke, and a re-song function is provided for the purpose of re-singing from the beginning again. Returning to, playback is performed.

  A logical format according to a new version obtained by improving an initial version different from the initial version shown in FIGS. 4 to 11 will be described with reference to FIGS. The detailed operation of the optical disk apparatus shown in FIG. 1 in the logical format related to the new version will be described after the logical format related to the new version improved from the initial version.

  FIG. 15 shows the structure of a logical format relating to a new version obtained by improving the initial version. That is, the data recording area 28 from the lead-in area 27 to the lead-out area 26 of the optical disc 10 shown in FIG. 1 has a volume and file structure as shown in FIG. This structure is defined in conformity with a specific standard as a logical format, for example, micro UDF (micro UDF) and ISO 9660. As described above, the data recording area 28 is physically divided into a plurality of sectors, and serial numbers are assigned to the physical sectors. In the following description, the logical address means a logical sector number (LSN) as defined by micro UDF (micro UDF) and ISO 9660, and the logical sector is 2048 bytes as well as the size of the physical sector. (LSN) is assigned a serial number along with the ascending order of physical sector numbers.

  As shown in FIG. 15, this volume and file structure has a hierarchical structure, and a volume and file structure area 270, a video manager (VMG) 271, at least one video title set (VTS) 272, and other recording areas. 273. These areas are partitioned on logical sector boundaries. Here, as in the conventional CD, one logical sector is defined as 2048 bytes. Similarly, one logical block is also defined as 2048 bytes, and thus one logical sector is defined as one logical block.

  The file structure area 70 corresponds to a management area defined in the micro UDF and ISO 9660, and the video manager 271 is stored in the system ROM / RAM unit 52 through the description of this area. The video manager 71 describes information for managing a video title set as described with reference to FIG. 16, and includes a plurality of files 274 starting from a file # 0. Each video title set (VTS) 72 stores compressed video data, audio data, sub-picture data, and reproduction information thereof, as will be described later, and similarly includes a plurality of files 274. . Here, the number of video title sets 272 is limited to a maximum of 99, and the number of files 274 (File # j to File # j + 9) constituting each video title set 272 is determined to be a maximum of 10. Yes. These files are similarly divided at logical sector boundaries.

  In the other recording area 273, information that can use the video title set 272 described above is recorded. The other recording area 273 is not necessarily provided.

  Here, in the optical disc 10 for karaoke, video, audio, and sub-picture data in which lyrics are displayed as sub-pictures with accompaniment along with moving images are reproduced as described later in the video title set 272. As a video object set 282. Therefore, for karaoke, the video title set 272 may be prepared as a title set 272 by age, singer, genre, or the like. The relationship between the classification and format of karaoke will be described in more detail later.

  As shown in FIG. 16, the video manager 271 includes three items, each corresponding to each file 274. That is, the video manager 271 includes video manager information (VMGI) 275, a video object set (VMGM_VOBS) 76 for the video manager menu, and a backup (VMGI_BUP) 277 of the video manager information. Here, the video manager information (VMGI) 275 and the video manager information backup 77 (VMGI_BUP) 277 are indispensable items, and the video object set (VMGM_VOBS) 276 for the video manager menu is optional. This VMGM video object set (VMGM_VOBS) 276 stores video data, audio data, and sub-picture data of a menu related to a volume in the optical disc managed by the video manager 271.

  This video object set for VMGM (VMGM_VOBS) 276 displays the description of the volume name of the optical disc, the audio accompanying the volume name display, and the description of the sub video, and the selectable items are the sub items. Displayed in video. For example, the VMGM video object set (VMGM_VOBS) 276 indicates that the optical disc is karaoke data related to a hit song collection of a certain age, that is, a hit song in the 1960s along with a volume name such as a pop hit song collection of the 1960s. The video of the released singer is played back as video data, the intro of the hit song is reproduced with audio, and the name of the hit song is displayed in the sub-picture. In addition, the name of a singer who made a hit song in the 1960s is displayed as a selection item, and an inquiry is made as to which singer to select.

  Here, the structure of the video object set (VOBS) 282 will be described with reference to FIG. FIG. 17 shows an example of a video object set (VOBS) 282. In this video object set (VOBS) 282, there are three types of video object sets (VOBS) 276, 295, 296 for two menus and titles. That is, the video object set (VOBS) 282 includes the video title set menu video object set (VTSM_VOBS) 295 and the titles of at least one video title set in the video title set (VTS) 272 as described later. There is a video object set (VTSTT_VOBS) 296 for this purpose, and each video object set 82 has the same structure except for its use.

  As shown in FIG. 6, a video object set (VOBS) 282 is defined as a set of one or more video objects (VOB) 283, and the video objects 283 in the video object set (VOBS) 282 are used for the same purpose. Is done. Normally, the menu video object set (VOBS) 282 is composed of one video object (VOB) 283, and stores data for displaying a plurality of menu screens. On the other hand, a video object set (VTSTT_VOBS) 282 for a title set is usually composed of a plurality of video objects (VOB) 283.

  Here, the video object (VOB) 283 corresponds to video data of a hit song collection of a certain singer, taking karaoke data of a hit song collection of the 1960s as an example. The menu video object set (VTSM_VOBS) 295 of the video title set 272 stores the menu data of the song name of the singer, and a specific song name can be designated according to the display of the menu.

  An identification number (IDN # j) is attached to the video object (VOB) 283, and the video object (VOB) 283 can be specified by this identification number. A video object (VOB) 283 is composed of one or a plurality of cells 284. A normal video stream is composed of a plurality of cells, but a video stream for menu, that is, a video object (VOB) 283 may be composed of one cell 284. Similarly, an identification number (C_IDN # j) is assigned to the cell, and the cell 284 is specified by this cell identification number (C_IDN # j).

  As shown in FIG. 17, each cell 284 is composed of one or a plurality of video object units (VOBU) 285, and usually a plurality of video object units (VOBU) 285. Here, the video object unit (VOBU) 285 is defined as a pack row having one navigation pack (NV pack) 286 at the head. That is, the video object unit (VOBU) 285 is defined as a collection of all packs recorded from one navigation pack 286 to immediately before the next navigation pack. The playback time of the video object unit (VOBU) corresponds to the playback time of video data composed of one or more GOPs included in the video object unit (VOBU), and the playback time is 0.4 seconds. This is determined so that it is not greater than 1 second. In MPEG, 1 GOP is normally defined as compressed screen data for reproducing about 15 images during 0.5 seconds.

  As shown in FIG. 17, when the video object unit includes karaoke video data, the video pack (V pack) 288, sub-picture pack (SP pack) 290 and audio pack (A pack) 291 defined in the MPEG standard. A video data stream is configured by arranging GOPs composed of the video object unit, but a video object unit (VOBU) 283 is determined based on the GOP playback time regardless of the number of GOPs, The navigation pack (NV pack) 286 is always arranged. Further, even in the reproduction data of only audio and / or sub-picture data, the reproduction data is configured with this video object unit as one unit. That is, even if a video object unit is composed of only audio packs, an audio pack to be played within the playback time of the video object unit to which the audio data belongs is stored in the video object unit in the same way as a video object of video data. The

  The video manager 271 will be described again with reference to FIG. Video management information 275 arranged at the head of the video manager 271 includes video information such as information on the video manager itself, information for searching for a title, information for playing back a video manager menu, and video title attribute information. Information for managing the title set (VTS) 272 is described, and four tables 278, 279, 280, and 281 are recorded in the order shown in FIG. Each table 278, 279, 280 is aligned with the boundary of the logical sector. The first table, the video management information management table (VMGI_MAT) 278, is an essential table and is the size of the video manager 271, the start address of each information in the video manager 271, and the video object set for the video manager menu ( VMGM_VOBS) 276 start address and attribute information thereof are described. This attribute information includes video attribute information, audio attribute information, and sub-picture attribute information. Based on these attribute information, the video playback processing unit 201 of the decoders 58, 60, and 62 and the playback processing unit 64, the audio playback processing, and the like. The mode of the unit 202, the audio mixing unit 203, and the sub-picture reproduction processing unit 207 is changed, and the video object set (VMGM_VOBS) 276 is reproduced in an appropriate mode.

  The title search pointer table (TT_SRPT) 279, which is the second table of the video manager 271, is included in the volume in the optical disc 10 that can be selected according to the input of the device key and the title number from the display unit 4. The start address of the video title set to be recorded is described.

  The video manager menu PGCI unit table (VMGM_PGCI_UT) 248, which is the third table of the video manager 271, is an essential item when there is a video object (VMGM_VOB) 276 for the video manager menu. In the video object (VMGM_VOB) 276 for the video manager menu, program chains corresponding to various languages are provided, and information on the program chain for the menu corresponding to each language is described.

  The video title set attribute table (VTS_ATRT) 280, which is the fourth table of the video manager 271, describes the attribute information defined for the video title set (VTS) 272 in the volume of the optical disc. That is, as attribute information, the number of video title sets (VTS) 272, the number of video title sets (VTS) 272, video attributes, such as video data compression methods, audio stream attributes, such as audio encoding mode, etc. The sub-picture attributes such as the sub-picture display type are described in this table.

  FIG. 18 shows details of description contents described in the volume management information management table (VMGI_MAT) 278, the video manager menu PGCI unit table (VMGM_PGCI_UT) 280, the title search pointer table (TT_SRPT) 279, and the video title set attribute table (VTS_ATRT) 280. Next, description will be made with reference to FIG.

  As shown in FIG. 18, the volume management information management table (VMGI_MAT) 278 includes video manager 271 identifiers (VMG_ID) and the number of logical blocks (one logical block is 2048 bytes as described above). The size (VMGI_SZ), the optical disc, commonly known as a digital versatile disc (digital versatile disc: hereinafter simply referred to as DVD), the version number (VERN) and the video manager 271 category (VMG_CAT) are described.

  Here, in the category (VMG_CAT) of the video manager 271, a flag indicating whether or not the DVD video directory is prohibited from copying is described. The table (VMGI_MAT) 278 includes a volume set identifier (VLMS_ID), a number of video title sets (VTS_Ns), an identifier of the supplier of data recorded on this disc (PVR_ID), and a video manager menu. The start address (VMGM_VOBS_SA) of the video object set (VMGM_VOBS) 276, the end address (VMGI_MAT_EA) of the volume manager information management table (VMGI_MAT) 278, and the start address (TT_SRPT_SA) of the title search pointer table (TT_SRPT) 279 are described. . If there is no VMG menu video object set (VMGM_VOBS) 295, “00000000h” is described in its start address (VMGM_VOBS_SA). The end address (VMGI_MAT_EA) of VMGI_MAT78 is described by the relative number of bytes from the head of VMGI_MAT278, and the start address (TT_SRPT_SA) of TT_SRPT279 is described by the relative number of logical blocks from the top logical block of VMGI275. Yes.

  Further, in this table 278, the start address (VMTS_ATRT_SA) of the start address (VMTS_ATRT) 280 of the video title set (VTS) 272 and the start address (VTS_ATRT_SA) of the video manager set PGCI unit table (VMGM_PGCI_UT) 248 and the VMGI manager table (VMTS_ATRT_SA) (VMGI_MAT) 71 is described in the relative number of bytes from the first byte, and the video attribute (VMGM_V_ATR) of the video manager menu (VMGM) video object set 276 is described. Furthermore, this table 278 includes the number of audio streams of the video manager menu (VMGM) (VMGM_AST_Ns), the attribute of the audio stream of the video manager menu (VMGM) (VMGM_AST_ATR), and the sub-video stream of the video manager menu (VMGM). The number (VMGM_SPST_Ns) and the video manager menu (VMGM) sub-picture stream attribute (VMGM_SPST_ATR) are described. When there is no video manager menu (VMGM), “00000000h” is described in the video manager menu PGCI unit table (VMGM_PGCI_UT).

  The structure shown in FIG. 16 will be described again. In the title search pointer table (TT_SRPT) 279 shown in FIG. 16, information (TSPTI) of the title search pointer table is first described as shown in FIG. 19, and then titles corresponding to input numbers 1 to n (n ≦ 99) are entered. The required number of search pointers (TT_SRP) are continuously described. When only one title of playback data, for example, one title of video data is stored in the volume of this optical disc, only one title search pointer (TT_SRP) 293 is described in this table (TT_SRPT) 279.

  As shown in FIG. 20, the title search pointer table information (TSPTI) 292 describes the number of entry program chains (EN_PGC_Ns) and the end address (TT_SRPT_EA) of the title search pointer (TT_SRP) 293. This address (TT_SRPT_EA) is described by the relative number of bytes from the first byte of the title search pointer table (TT_SRPT) 279. As shown in FIG. 22, each title search pointer (TT_SRP) describes a video title set number (VTSN), a program chain number (PGCN), and a start address (VTS_SA) of the video title set 272.

  A video title set (VTS) 272 and a program chain (PGC) to be reproduced are specified by the contents of the title search pointer (TT_SRP) 293, and a storage position of the video title set 272 is specified. The start address (VTS_SA) of the video title set 272 describes the title set specified by the video title set number (VTSN) in the number of logical blocks.

  Here, the program chain 287 is defined as a set of programs 289 that reproduce a story of a certain title as shown in FIG. In the menu program chain, a still picture or moving picture program is reproduced one after another to complete one title menu. In the title set program chain, a chapter with a certain story consisting of a plurality of programs corresponds to the program chain, and a movie of one title is completed by continuously reproducing the program chain. As shown in FIG. 22, each program 289 is defined as a set of the already described cells 284 arranged in the reproduction order. Here, in the case of karaoke, if the title set 272 is a collection of hit songs in the 1960s, the program chain 287 is a song of a singer in the 60s, that is, a collection of programs 289, like the video object 283. Accordingly, a title set 272 can be specified to specify a 60's hit song collection, a program chain 287 can specify a singer's karaoke collection of 60's, and a program 289 can specify a specific song name. Can be specified.

  In the video manager menu PGCI unit table (VMGM_PGCI_UT) 280 shown in FIG. 16, video manager menu PGCI unit table information (VMGM_PGCI_UTI) 250 is first described as shown in FIG. The required number n of video manager menu language unit search pointers (VMGM_LU_SRP) 251 are successively described, and then video manager menu language units (VMGM_LU) 252 searched by the search pointer are described. Here, the menu defined by the video manager menu language unit (VMGM_LU) must have only one PGC.

  In the video manager menu PGCI unit table information (VMGM_PGCI_UTI) 280, as shown in FIG. 24, the number (VMGM_LU_Ns) of VMGM language units (VMGM_LU_Ns) and the end address (VMGM_PGCI_UT) 280 of the VMGM_PGCI unit table (VMGM_PGCI_UT) 280 are described. Yes. Each of the n video manager menu language unit search pointers (VMGM_LU_SRP) 251 prepared for each language includes a language code (VMGM_LCD) of a video manager menu and a video manager menu (VMGM) language unit as shown in FIG. The start address (VMGM_LU_SA) of (VMGM_LU) 252 is described. The end address (VMGM_PGCI_UT_EA) of VMGM_PGCI_UT280 and the start address (VMGM_LU_SA) of VMGM_LU252 are described by the logical block number from the first byte of this VMGM_PGCI unit table (VMGM_PGCI_UT) 280.

  Each of n VMGM language units (VMGM_LU) 252 prepared for each language includes a video manager menu language unit information (VMGM_LUI) 253 and VMGM_PGCI search pointers corresponding to the number of menu program chains as shown in FIG. (VMGM_PGCI_SRP) is provided, and VMGM_PGC information (VMGM_PGCI) 255 searched by this search pointer is similarly provided for the number of menu program chains.

  Each language unit information (VMGM_LUI) 253 describes the number of VMGM_PGCI (VMGM_PGCI_Ns) and the end address (VMGM_LUI_EA) of the language unit information (VMGM_LUI) as shown in FIG. Each VMGM_PGCI search pointer (VMGM_PGCI_SRP) describes a VMGM_PGC category (VMGM_PGC_CAT) and a VMGM_PGCI start address (VMGM_PGCI_SA) as shown in FIG. The end address (VMGM_LUI_EA) of VMGM_LUI and the start address (VMGM_PGCI_SA) of VMGM_PGCI are described by relative logical block numbers from the first byte of VMGM_LU. The VMGM_PGC category (VMGM_PGC_CAT) describes whether this program chain is an entry program chain, a title menu, or the like.

  The video title set attribute table (VTS_ART) 280 describing the attribute information of the video title set (VTS) 272 shown in FIG. 16 is the video title set attribute table information (VTS_ATRTI) 266, n video titles as shown in FIG. It consists of a set attribute search pointer (VTS_ATR_SRP) 267 and n video title set attributes (VTS_ARTR) 268, which are described in that order. The information of this table 280 is described in the video title set attribute table information (VTS_ATRTI) 266, and the video title set attribute search pointer (VTS_ATR_SRP) 267 is described in the order corresponding to the title sets from # 1 to #n. Similarly, there is a description regarding a pointer for searching for the video title set attribute (VTS_ATR) 268 described in the order corresponding to the title sets from # 1 to #n. Each video title set attribute (VTS_ATR) 268 describes the attribute of the corresponding title set (VTS).

  More specifically, the video title set attribute table information (VTS_ATRTI) 266 describes the number of video titles as a parameter (VTS_Ns) as shown in FIG. 30, and the end of the video title set attribute table (VTS_ART) 80. The address is described as a parameter (VTS_ATRT_EA). As shown in FIG. 31, each video title set attribute search pointer (VTS_ATR_SRP) 267 describes the start address of the corresponding video title set attribute (VTS_ATR) 68 as a parameter (VTS_ATR_SA). Furthermore, in the video title set attribute (VTS_ATR) 268, as shown in FIG. 32, 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 ( VTS_CAT). Furthermore, in the video title set attribute (VTS_ATR) 268, attribute information of the corresponding video title set is described as a parameter (VTS_ATRI). The attribute information of this video title set has the same contents as the attribute information of the video title set described in the video title set information management table (VTS_MAT) described later with reference to FIGS. 31 and 32. Description is omitted.

  Next, the structure of the logical format of the video title set (VTS) 272 shown in FIG. 15 will be described with reference to FIG. In each video title set (VTS) 272, as shown in FIG. 33, four items 294, 295, 296, and 297 are described in the order of description. Each video title set (VTS) 272 is composed of one or more video titles having common attributes, and management information about the video title 272, for example, information for playing back the video object set 296, Information for reproducing the title set menu (VTSM) and attribute information of the video object set 272 are described in the video title set information (VTSI).

  A backup 297 of the video title set information (VTSI) 294 is provided in the video title set (VTS) 272. Between the video title set information (VTSI) 294 and the backup of this information (VTSI_BUP) 297, a video object set (VTSM_VOBS) 295 for the video title set menu and a video object set (VTTSTT_VOBS) 296 for the video title set title are provided. Is arranged. Any video object set (VTSM_VOBS and VTSTT_VOBS) 295, 296 has the structure shown in FIG.

  The video title set information (VTSI) 294, the backup of this information (VTSI_BUP) 297, and the video object set title video object set (VTSTT_VOBS) 296 are indispensable items for the video title set 272, and the video for the video title set menu is displayed. The object set (VTSM_VOBS) 295 is an option provided as necessary.

  As shown in FIG. 33, the video title set information (VTSI) 294 includes seven tables 298, 299, 300, 301, 311, 312, 313, and these seven tables 298, 299, 300, 301, 311, 312 and 313 coincide with boundaries between logical sectors. The first table, the video title set information management table (VTSI_MAT) 298, is an essential table, the size of the video title set (VTS) 272, the start address of each information in the video title set (VTS) 272, and the video. The attributes of the video object set (VOBS) 282 in the title set (VTS) 272 are described.

  The second table, the video title set part of title search pointer table (VTS_PTT_SRPT) 299, is an indispensable table and is a list of video titles that can be selected according to the number input by the user from the key operation / display unit 4 of the device. A part, that is, a program chain (PGC) and / or a program (PG) included in the selectable video title set 272 is described. When the user designates an arbitrary number from among the input numbers described in the pamphlet along with the distribution of the optical disc 10 by the key operation / display unit 4, the user can view the video from the part in the story corresponding to the input number. The selectable title part can be arbitrarily determined by the title provider.

  The third table, the video title set program chain information table (VTS_PGCIT) 300, is an essential table and describes information related to the VTS program chain, that is, VTS program chain information (VTS_PGCI).

  The fourth table, the video title set menu PGCI unit table (VTSM_PGCI_UT) 311 is an essential item when a video object set menu video object set (VTSM_VOBS) 95 is provided, and the video provided for each language. Information about a program chain for reproducing the title set menu (VTSM) is described. By referring to this video title set menu PGCI unit table (VTSM_PGCI_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.

  A video title set time search map table (VTS_MAPT) 301, which is a fifth table, is an optional table provided as necessary. Information about the recording position of the video data in each program chain (PGC) is described.

  The sixth table, the video title set cell address table (VTS_C_ADT) 312 is an indispensable item. As described with reference to FIG. 6, the address or cell of each cell 284 constituting all the video objects 283 is stored. The addresses of the cell pieces to be configured 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 being interleaved with reference to the cell piece.

  A video title set video object unit address map (VTS_VOBU_ADMAP) 313 as the seventh table is an essential item, and all start addresses of the video object units 85 in the video title set are described in the arrangement order.

  Next, the video title information manager table (VTSI_MAT) 298, the video title set program chain information table (VTS_PGCIT) 300, and the video title set menu PGCI unit table (VTSMPGCI_UT) shown in FIG. 33 will be described with reference to FIGS. To do.

  FIG. 34 shows the description content of the video title information manager table (VTSI_MAT) 298. In this table (VTSI_MAT) 298, the video title set identifier (VTS_ID), the size of the video title set 272 (VTS_SZ), the version number (VERN) of this DVD video standard, and the category (VTS_CAT) of the video title set 272 are listed in the order of description. And the end address (VTSI_MAT_EA) of this video title information manager table (VTSI_MAT) 2298. Here, in the category (VTS_CAT) of the video title set 272, the application field of the video title set 272 is described, and when the application field is karaoke, this is described.

  Also, in this table (VTSI_MAT) 98, the start address (VTSM_VOBS_SA) of the video object set (VTSM_VOBS) 295 of the VTS menu (VTSM) and the start address (VTSTT_VOB_SA) of the video object for the title in the video title set (VTS) The start address of is described. When there is no video object set (VTSM_VOBS) 295 of the VTS menu (VTSM), “00000000h” is described in the start address (VTSM_VOBS_SA). The VTSI_MAT end address (VTSI_MAT_EA) is described in the relative number of bytes from the first byte of the video title set information management table (VTI_MAT) 294, and the VTSM_VOBS start address (VTSM_VOBS_SA) and VTSTT_VOB start address (VTSTT_VOB_SA) It is described by the number of relative logical blocks (RLBN) from the top logical block of the title set (VTS) 272.

  Further, in this table (VTSI_MAT) 298, the start address (VTS_PTT_SRPT_SA) of the video title set part of title search pointer table (VTS_PTT_SRPT) 299 is described in the number of relative blocks from the first logical block of the video title set information (VTSI) 294. Has been. In this table (VTSI_MAT) 298, the start address (VTS_PGCI_UT) 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 video titles. The set information (VTSI) 294 is described in the relative number of blocks from the first logical block, and the start address (VTS_MAPT_SA) of the time search map table (VTS_MAPT) 301 of the video title set (VTS) is the video title set (VTS) 272. It is described in a relative logical sector from the first logical sector. Similarly, a VTS address table (VTS_C_ADT) 312 and a VTS_VOBU address map (VTS_VOBU_ADMAP) 313 are described in relative logical sectors from the top logical sector of the video title set (VTS) 272.

  In this table (VTSI_MAT) 298, the video attribute (VTSM_V_ATR) of the video object set (VTSM_VOBS) 295 for the video title set menu (VTSM) in the video title set (VTS) 272, the number of audio streams (VTSM_AST_Ns), and the audio thereof The stream attribute (VTSM_AST_ATR), the number of sub-picture streams (VTSM_SPST_Ns), and the sub-picture stream attribute (VTSM_SPST_ATR) are described. Similarly, in this table (VTSI_MAT) 298, a video attribute (VTS_V_ATR) of a video object set (VTST_VOBS) 296 for a title (VTSTT) of a video title set (VTS) in a video title set (VTS) 72, an audio stream The number (VTS_AST_Ns), the audio stream attribute (VTS_AST_ATR), the number of sub-picture streams (VTS_SPST_Ns), and the sub-picture stream attribute (VTS_SPST_ATR) are 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.

  For audio streams, a maximum of 8 streams are prepared, and for sub-picture streams, a maximum of 32 streams are prepared. Attributes are described for each stream. The sub-picture stream attribute (VTS_SPST_ATR) describes whether or not the sub-picture type is language. If the category (VTS_CAT) of the video title set 272 is karaoke, streams of various languages, English, Japanese, and other lyrics can be prepared as the sub-picture stream. Normally, if the category (VTS_CAT) is karaoke, the sub-picture stream attribute (VTS_SPST_ATR) describes that the sub-picture type is language.

  Next, audio stream attributes will be described in detail with reference to FIG. The audio stream attribute (VTSM_AST_ATR) for the video object set (VTSM_VOBS) 295 for the VTSM and the video object set (VTST_VOBS) 296 for the video title set title (VTSTT) are for the video manager menu. Attribute information substantially similar to the audio stream attribute (VMGM_AST_ATR) of the video object (VMGM_VOBS) is described. That is, in the audio stream attribute (VTSM_AST_ATR) of the VTS menu video object set (VTSM_VOBS) 295, the audio coding mode, reservation, audio type, and audio application are changed from bit number b63 to bit number b48 as shown in FIG. ID, quantization, sampling frequency, reservation, and number of audio channels are described, and bit number b47 to bit number b0 are reserved for future use. The audio stream attribute (VTS_AST_ATR) of the video title set title (VTST) includes an audio coding mode, a multi-channel extension, an audio type, an audio application ID, from bit number b63 to bit number b48 as shown in FIG. Quantization, sampling frequency, reservation, and the number of audio channels are described, a specific code is described in bit number b47 to bit number b40, bit number b39 to bit number b32, and bit number b31 to bit number b24. A reservation for a specific code is provided. Bit numbers b23 to b8 are reserved for future use, and application information is described in bit numbers b8 to b0. Here, when there is no VTS menu video object set (VTSM_VOBS) 95, or when there is no audio stream in the video object set, “0” is described in each bit from bit number b63 to bit number b0. .

  The audio coding mode is described in bit numbers b63, b62, and b61 in both the attributes of the VTSM and VTST audio streams (VTSM_AST_ATR, VTS_AST_ATR). When “000” is described in the audio coding mode, it means that the audio data is coded by Dolby AC-3 (trademark of Dolby Laboratories Licensing Corporation), and “010” is set in the audio coding mode. When it is described, it means that the audio data is compressed by MPEG-1 or MPEG-2 without an extension bit stream. Further, when “011” is described in the audio coding mode, it means that the audio data is compressed by MPEG-2 with the extension bit stream, and “100” is described in the audio coding mode. In this case, it means that audio data is coded by linear PCM. For audio data, other descriptions are reserved for future use.

  In the case of the video data attribute, when one frame is drawn at a horizontal scanning frequency of 60 Hz and the number of scanning lines is 525 (“00” is described in bit numbers b13 and b12 in VTSM_V_ATR and VTS_V_ATR), Dolby AC− 3 (bit numbers b63, b62, b63 are "000") or linear PCM (bit numbers 63, b62, b63 are "100") should be set. In addition, in the video data attribute, when a frame rate is drawn at a frequency of 50 Hz and 625 scanning lines (“01” is described in bit numbers b13 and b12 in VTSM_V_ATR and VTS_V_ATR), MPEG-1. MPEG-2 (bit numbers 63, b62, and b63 are “010” or “011”) or linear PCM (bit numbers 63, b62, and b63 are “100”) should be set. In the audio coding mode of the VTST audio stream attribute (VTS_AST_ATR), the bit number b60 describes multi-channel extension. When the bit number b60 is “0”, the VTS related to the audio stream is described. This means that the multi-channel audio stream attribute (VTS_MU_AST_ATR) is invalid, and when this bit number b60 is “1”, the multi-channel audio stream attribute (VTS_MU_AST_ATR) related to the audio stream is linked. It means that.

  The audio type is described in bit numbers b59 and b58. If not specified, “00” is described. If the language is a human voice, “01” is described. Has been. The audio application field ID is described in bit numbers b57 and b56. If not specified, “00” is described. In the case of karaoke, “01” is described. In the case of surround, “10” is described, and the others are reserved.

  Further, regarding the quantization of audio data, it is described in bit numbers b55 and b54. When the bit numbers b55 and b54 are “00”, it means that the audio data is quantized with 16 bits. When b55 and b54 are “01”, it means that the audio data is quantized with 20 bits. When the bit number numbers b55 and b54 are “10”, the audio data is quantized with 24 bits. When the bit numbers b55 and b54 are “11”, it is not specified. Here, when the audio coding mode is set to linear PCM (bit numbers b63, b62, b61 are "100"), quantization is not specified (bit numbers b55, b54 are "11"). Is done. The audio data sampling frequency Fs is described in bit numbers b53 and b52. When the sampling frequency Fs is 48 kHz, “00” is described, and when the sampling frequency Fs is 96 kHz, “01”. Is described, and others are reserved.

  The number of audio channels is described in bit numbers b66 to b64, and when the bit numbers b50, b49, and b48 are “000”, it means one channel (monaural), and the bit numbers b50, b49, When b48 is “001”, it means that there are two channels (stereo). When the bit numbers b50, b49, b48 are “010”, it means that there are 3 channels, and when the bit numbers b50, b49, b48 are “011”, there are 4 channels. When the bit numbers b50, b49, b48 are “100”, it means that there are 5 channels, and when the bit numbers b50, b49, b48 are “101”, there are 6 channels. If the bit number b50, b49, b48 is “110”, it means 7 channels, and if the bit number b50, b49, b48 is “111”, This means that there are 8 channels.

  The specific code is described in b47 to b40 and b39 to b32. In this case, when the type of the audio stream is language, that is, voice, the code of the language defined in ISO-639 is the language. It is described with a symbol. If the type of the audio stream is not language, i.e. voice, this area is reserved.

  The number of VTS audio streams (VTS_AST_Ns) is set between 0 and 8. Therefore, eight VTS audio stream attributes (VTS_AST_ATR) are prepared corresponding to the number of streams that can be set. That is, when there are VTS audio stream attribute (VTS_AST_Ns) areas from VTS audio stream # 0 to VTS audio stream # 7, and there are fewer than 8 VTS audio streams and there is no corresponding audio stream, there is no audio In the description of the VTS audio stream attribute (VTS_AST_Ns) shown in FIG. 35 corresponding to the stream, all bits are “0”.

  In the audio application field of bit number b7 to bit number b0, reservation is not particularly specified. However, “01” is described in bit numbers b57 and b56, and the audio application field ID is karaoke. When it is obvious, the number of channels is limited to a maximum of 5 channels, and the allocation mode of the channels is described. The channel allocation mode differs depending on the audio coding mode (AC_3, MPEG-1, MPEG, 2, linear PCM) described in bit numbers b63, b62, and b61, and the allocation is determined for each allocation mode. This audio application field also describes whether the audio stream is introduced by the presenter or whether it is solo or duet.

  In the attribute (VTS_MU_AST_ATR) of the multi-channel audio stream of the video title set (VTS), attribute information from the multi-channel audio stream # 0 to the multi-channel audio stream # 7 is described. Each multi-channel audio stream attribute (VTS_MU_AST_ATR) describes the contents of the audio channel (karaoke, surround, etc.), the audio mixing method, and the like.

  The VTS program chain information table (VTS_PGCIT) 300 shown in FIG. 33 has a structure as shown in FIG. In this information table (VTS_PGCIT) 300, information (VTS_PGCI) related to the VTS program chain (VTS_PGC) is described, and information (VTS_PGCIT_I) 302 related to the VTS program chain (VTS_PGC) 300 is provided as the first item. It has been. Subsequent to the information (VTS_PGCIT_I) 302, the information table (VTS_PGCIT) 300 includes VTS program chains (VTS_PGC) corresponding to the number (# 1 to #n) of VTS program chains (VTS_PGC) in the information table (VTS_PGCIT) 300. VTS_PGCI search pointer (VTS_PGCIT_SRP) 303 is provided, and lastly, information (VTS_PGCI) 304 relating to each VTS program chain (VTS_PGC) is provided by the number (# 1 to #n) corresponding to the VTS program chain (VTS_PGC). ing.

  In the information (VTS_PGCIT_I) 302 of the VTS program chain information table (VTS_PGCIT) 300, the number (VTS_PGC_Ns) of the VTS program chains (VTS_PGC) is described as the contents as shown in FIG. The end address (VTS_PGCIT_EA) is described by the relative number of bytes from the first byte of the information table (VTS_PGCIT) 300.

  Further, the VTS_PGCIT search pointer (VTS_PGCIT_SRP) 303 includes a category (VTS_PGC_CAT) of the program chain (VTS_PGC) of the video title set (VTS) 272 and a first byte of the VTS_PGC information table (VTS_PGCIT) 300 as shown in FIG. The start address (VTS_PGCI_SA) of the VTS_PGC information (VTS_PGCI) is described as a relative number of bytes. Here, in the VTS_PGC category (VTS_PGC_CAT), for example, whether or not it is an entry program chain (entry PGC) to be reproduced first, and the type of application field of the program chain are described. Normally, the entry program chain (PGC) is described prior to the program chain (PGC) that is not the entry program chain (PGC). Also, karaoke is described as an application field type of this program chain.

  In the PGC information (VTS_PGCI) 304 in the video title set, four items are described as shown in FIG. In the PGC information (VTS_PGCI) 304, program chain general information (PGC_GI) 305, which is an essential item, is first described, and at least three items 306, 307 that are mandatory only when there is a video object following this. 308. That is, the program chain program map (PGC_PGMAP) 306, the cell playback information table (C_PBIT) 307, and the cell location information table (C_POSIT) 308 are described in the PGC information (VTS_PGCI) 304 as the three items.

  The program chain general information (PGC_GI) 305 includes a program chain (PGC) category (PGCI_CAT), a program chain (PGC) content (PGC_CNT), and a program chain (PGC) playback time (PGC_PB_TIME) as shown in FIG. Is described. The PGC category (PGCI_CAT) includes whether the PGC can be copied, whether the program in the PGC is continuous or random, and the type of application field of the program chain. be written. If the application field of this program chain is karaoke, karaoke is described as the type.

  The contents of the PGC (PGC_CNT) describe the contents of the program chain, that is, the number of programs, the number of cells, and the like. The PGC playback time (PGC_PB_TIME) describes the total playback time of the program in the PGC. This playback time describes the playback time of the program when the program in the PGC is played back continuously regardless of the playback procedure.

  The program chain general information (PGC_GI) 305 describes PGC sub-picture stream control (PGC_SPST_CTL), PGC audio stream control (PGC_AST_CTL), and PGC sub-picture palette (PGC_SP_PLT). The PGC sub-picture stream control (PGC_SPST_CTL) describes the sub-picture number that can be used in PGC, and the PGC audio stream control (PGC_AST_CTL) describes the number of the audio stream that can be used in PGC. The PGC sub-picture palette (PGC_SP_PLT) describes a set of a predetermined number of color palettes used for all sub-picture streams of this PGC.

  Further, the PGC general information (PGC_GI) 305 includes a start address (PGC_PGMAP_SA_SA) of the PGC program map (PGC_PGMAP_SA), a start address (C_PBIT_SA) of the cell playback information table (C_PBIT) 307, and a start of the cell location information table (C_POSIT) 308. An address (C_POSIT_SA) is described. Both of the start addresses (C_PBIT_SA and C_POSIT_SA) are described by the relative number of logical blocks from the first byte of the VTS_PGC information (VTS_PGCI).

  A program chain program map (PGC_PGMAP) 306 is a map showing the configuration of programs in the PGC as shown in FIG. In this map (PGC_PGMAP) 306, as shown in FIGS. 41 and 42, 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 entry cell number description. Therefore, the first entry cell number of this map (PGC_PGMAP) 206 must be # 1.

  The cell playback information table (C_PBIT) 307 defines the playback order of PGC cells. In this cell playback information table (C_PBIT) 307, cell playback information (C_PBIT) is described continuously as shown in FIG. Basically, the cells are reproduced in the order of the cell numbers. In the cell playback information (C_PBIT), as shown in FIG. 42, the cell category (C_CAT) is described as the playback information (P_PBI). This cell category (C_CAT) includes a cell block mode indicating whether the cell is a cell in a cell block, or the first cell if the cell is in a cell block. The cell block type indicating whether there is no angle block or the STC discontinuity flag indicating whether it is necessary to reset the system time clock (STC) is described. Here, the cell block is defined as a set of cells having a specific angle. The change of the angle is realized by changing the cell block. In other words, taking baseball as an example, a change in the angle block in which the scene from the infield is photographed from the angle block in which the scene from the outfield is photographed corresponds to a change in angle.

  In this cell category (C_CAT), a cell playback mode indicating whether playback is continued in the cell or in units of each video object unit (VOBU) in the cell, whether to stop after playback of the cell. Cell navigation control indicating whether or not the stationary time is described.

  As shown in FIG. 42, the reproduction information (P_PBI) in the cell reproduction information table (C_PBIT) 307 includes a cell reproduction time (C_PBTM) describing the total reproduction time of the PGC. When the angle cell block is in the PGC, the playback time of the angle cell number 1 represents the playback time of the angle block. Furthermore, in the cell playback information table (C_PBIT) 307, the number of logical sectors relative to the top logical sector of the video object unit (VOBU) 285 in which the cell is recorded is the first video object unit (VOBU) in the cell. The start address (C_FVOBU_SA) of 285 is described, and the last video object unit (VOBU) in the cell in the relative number of logical sectors from the first logical sector of the video object unit (VOBU) 285 in which the cell is recorded A start address (C_LVOBU_SA) of 285 is described.

  The cell location information table (C_POSI) 308 specifies the video object (VOB) identification number (VOB_ID) and cell identification number (C_ID) used in the PGC. In the cell location information table (C_POSI), as shown in FIG. 43, the cell location information (C_POSI) corresponding to the cell number described in the cell playback information table (C_PBIT) 307 is the same as the cell playback information table (C_PBIT). Listed in order. In this cell position information (C_POSI), as shown in FIG. 46, the identification number (C_VOB_IDN) and the cell identification number (C_IDN) of the video object unit (VOBU) 285 of the cell are described.

  Further, the structure of the video title set PGCI unit table (VTSM_PGCI_UT) 311 shown in FIG. 33 will be described with reference to FIGS. The video title set PGCI unit table (VTSM_PGCI_UT) 311 shown in FIG. 47 has substantially the same structure as the VMGM_PGCI unit table 280 shown in FIG. That is, in the VMGM_PGCI unit table (VTSM_PGCI_UT) 311, VTS menu PGCI unit table information (VTSM_PGCI_UTI) 350 is first described as shown in FIG. 47, and then the VTS menu language unit search pointer corresponding to the number of languages n (VMGM_LU_SRP) 351 is continuously described in the necessary number n, and subsequently, a VTS menu language unit (VTSM_LU) 352 searched by a search pointer is described.

  The VTS menu PGCI unit table information (VMGM_PGCI_UTI) 350 includes the number of VTSM language units (VTSM_LU) (VTSM_LU_Ns) and the end address (VTSM_PGCI_UT) 311 of the VTSM_PGCI unit table (VMGM_PGCI_UT) 311 as shown in FIG. . Each of the n video manager menu language unit search pointers (VTSM_LU_SRP) 351 prepared for each language includes a VTS menu language code (VTSM_LCD) and a VTS menu (VTSM) language unit (VTSM_LU) as shown in FIG. ) 252 start address (VTSM_LU_SA) is described. The end address (VTSM_PGCI_UT_EA) of VTSM_PGCI_UT 280 and the start address (VTSM_LU_SA) of VTSM_LU 352 are described by the logical block number from the first byte of this VTSM_PGCI unit table (VTSM_PGCI_UT) 311.

  Each of the n VTSM language units (VTSM_LU) 352 prepared for each language includes VTS menu language unit information (VTSM_LUI) 353, as many VTSM_PGCI search pointers as the number of program chains for menus as shown in FIG. (VTSM_PGCI_SRP) 354 is provided, and VTSM_PGC information (VTSM_PGCI) 355 searched by this search pointer is similarly provided for the number of menu program chains.

  Each language unit information (VTSM_LUI) 353 describes the number of VMGM_PGCI (VMGM_PGCI_Ns) and the end address (VTSM_LUI_EA) of the language unit information (VTSM_LUI), as shown in FIG. Each VTSM_PGCI search pointer (VTSM_PGCI_SRP) describes a VTSM_PGC category (VTSM_PGC_CAT) and a VTSM_PGCI start address (VTSM_PGCI_SA) as shown in FIG. The end address (VTSM_LUI_EA) of VTSM_LUI and the start address (VTSM_PGCI_SA) of VTSM_PGCI are described by relative logical block numbers from the first byte of VTSM_LU. The VTSM_PGC category (VTSM_PGC_CAT) describes whether this program chain is an entry program chain or a title menu.

  As described with reference to FIG. 17, the cell 284 is a set of video object units (VOBU) 285, and the video object unit (VOBU) 285 is defined as a pack row starting from a navigation (NV) pack 286. Therefore, the start address (C_FVOBU_SA) of the first video object unit (VOBU) 285 in the cell 284 represents the start address of the NV pack 286. As shown in FIG. 53, this NV pack 286 is composed of a pack header 310, a system header 311 and two packets as navigation data, that is, a reproduction control information (PCI) packet 116 and a data search information (DSI) packet 117. The number of bytes as shown in FIG. 53 is assigned to each part, and one pack is set to 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 pictures (GOP). Even when the object unit 285 does not include a video pack, the NV pack is arranged at the head of the object unit including the audio pack and / or the sub-picture pack. As described above, even when the object unit does not include the video pack, the playback time of the object unit is determined based on the unit in which the video is played, 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, the GOP corresponds to compressed data, and when the compressed data is expanded, a plurality of frames of image data that can reproduce a moving image are reproduced. The pack header 310 and the system header 311 are defined by the MPEG2 system layer. The pack header 310 stores pack start code, system clock reference (SCR), and multiplexing rate information, and the system header 311 stores bits. The rate and stream ID are described. In the packet headers 312 and 314 of the PCI packet 316 and the DSI packet 317, a packet start code, a packet length, and a stream ID are stored as defined in the MPEG2 system layer.

  Other video, audio, and sub-picture packs 288, 289, 280, and 291 have a packet header 120, a packet header 121, and corresponding data stored in the same manner as defined in the MPEG2 system layer as shown in FIG. 322, and its pack length is set to 2048 bytes. Each of these packs is aligned with a logical block boundary.

  The PCI data (PCI) 313 of the PCI packet 316 is navigation data for changing the contents of the presentation, that is, the display in synchronization with the playback state of the video data in the VOB unit (VOBU) 285. That is, the PCI data (PCI) 313 describes PCI general information (PCI_GI) as information of the entire PCI and angle information (NSMLS_ANGLI) as each jump destination angle information when changing the angle, as shown in FIG. ing. In the PCI general information (PCI_GI), as shown in FIG. 56, the address of the NV pack (NV_PCK) 286 in which the PCI 313 is recorded with the number of relative logical blocks from the logical sector of the VOBU 285 in which the PCI 313 is recorded ( NV_PCK_LBN) is described. Also, the PCI general information (PCI_GI) describes the category of VOBU285 (VOBU_CAT), the start reproduction time (VOBU_S_PTM) and the reproduction end time (VOBU_EPTM) of VOBU285. Here, the start PTS (VOBU_SPTS) of the VOBU 285 indicates the reproduction start time (start presentation time) of the video data in the VOBU 285 including the PCI 313. This playback start time is the first playback start time in VOBU285. Normally, the first picture corresponds to the reproduction start time of an I picture (Intra-Picture) in the MPEG standard. The end PTS (VOBU_EPTS) of the VOBU 85 indicates the playback end time (end presentation time) of the VOBU 285 including the PCI 313.

  The DSI data (DSI) 315 of the DSI packet 317 shown in FIG. 53 is navigation data for executing a search for the VOB unit (VOBU) 285. As shown in FIG. 57, DSI data (DSI) 315 includes DSI general information (DSI_GI), seamless playback information (SML_PBI), angle information (SML_AGLI), navigation pack address information (NV_PCK_ADI), and synchronous playback information (SYNCI). Is described.

  The DSI general information (DSI_GI) describes the entire information of the DSI data 315. That is, as shown in FIG. 58, the system time base reference value (NV_PCK_SCR) of the NV pack 86 is described in the DSI general information (DSI_GI). This system time base reference value (NV_PCK_SCR) is stored in a system time clock (STC) incorporated in each unit shown in FIG. 1, and video, audio and sub-picture packs are video, audio and sub-picture based on this STC. Decoding is performed by the decoder units 58, 60 and 62, and video and audio are reproduced by the monitor unit 6 and the speaker unit 8. In the DSI general information (DSI_GI), the start of the NV pack (NV_PCK) 286 in which the DSI 315 is recorded by the relative logical sector number (RLSN) from the head logical sector of the VOB set (VOBS) 282 in which the DSI 315 is recorded The address (VOBU_EA) of the last pack in the VOB unit (VOBU) 285 in which the address (NV_PCK_LBN) is described and the DSI 315 is recorded in the relative logical sector number (RLSN) from the head logical sector of the VOB unit (VOBU) is Are listed.

  Further, in the DSI general information (DSI_GI), the last address of the first I picture in this VOBU is the relative number of logical sectors (RLSN) from the head logical sector of the VOB unit (VOBU) in which the DSI 315 is recorded. The end address (VOBU_IP_EA) of the recorded V pack (V_PCK) 288 is described, the identification number (VOBU_IP_IDN) of the VOBU 283 in which the DSI 315 is recorded, and the identification number (VOBU_C_IDN) of the cell in which the DSI 315 is recorded Are listed.

  In the DSI navigation pack address information, addresses of a predetermined number of navigation packs are described. The video is fast-forwarded by referring to this address. Also, the synchronization information (SYNCI) describes address information of sub-picture and audio data to be reproduced in synchronization with the reproduction start time of video data of the VOB unit (VOBU) including the DSI 315. That is, as shown in FIG. 59, the start address (A_SYNCA) of the target audio pack (A_PCK) 291 is described by the relative number of logical sectors (RLSN) from the NV pack (NV_PCK) 286 in which the DSI 315 is recorded. The When there are a plurality of audio streams (maximum 8), the same number of synchronization information (SYNCI) is described. Further, in the synchronization information (SYNCI), the NV pack (NV_PCK) in which the address (SP_SYNCA) of the NV pack (NV_PCK) 286 of the VOB unit (VOBU) 85 including the target audio pack (SP_PCK) 291 is recorded in the DSI 315 is recorded. ) Relative logical sector number (RLSN) from 286. When there are a plurality of sub-picture streams (maximum 32), the same number of synchronization information (SYNCI) is described.

  Next, the playback operation of movie data for karaoke from the optical disc 10 having the logical format shown in FIGS. 15 to 59 will be described with reference to FIG. 1 again. In FIG. 1, a solid line arrow between blocks indicates a data bus, and a broken line arrow indicates a control bus.

  In the optical disk apparatus shown in FIG. 1, when the power is turned on and the optical disk 10 is loaded, the system CPU section 50 reads the initial operation program from the system ROM and RAM section 52 and operates the disk drive section 30. . Accordingly, the disk drive unit 30 starts the read operation from the lead-in area 27, and the volume and file structure area 70 that define the volume and file structure in accordance with ISO-9660 and the like following the lead-in area 27 are read. . That is, the system CPU unit 50 gives a read command to the disk drive unit 30 in order to read the volume and file structure area 270 recorded at a predetermined position of the disk 10 set in the disk drive unit 30, and the volume and file The contents of the structure area 270 are read out 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 management information necessary for management via the path table and directory record stored in the data RAM unit 56, and the system ROM & RAM The data is transferred to a predetermined location in the unit 52 and stored.

  Next, the system CPU unit 50 refers to the information on the recording position and recording capacity of each file from the system ROM & RAM unit 52 and acquires the video manager 271 including a plurality of files starting from file number 0. That is, the system CPU unit 50 gives a read command to the disk drive unit 30 by referring to the recording position and recording capacity information of each file acquired from the system ROM and RAM unit 52 and exists on the root directory. The positions and sizes of a plurality of files constituting the video manager 271 are acquired, the video manager 71 is read out, and stored in the data RAM unit 56 via the system processor unit 54.

  Here, the operation until the video manager menu for selecting karaoke is displayed will be described with reference to FIG. When the menu search is started as shown in step S10, the 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 acquired. The VMGM_PGCI unit table 280 is acquired, and the number (a) of the language units (VMGM_LU_Ns) of the video manager menu is acquired from the table information (VMGM_PGCI_UTI) of this table (VMGM_PGCI_UT) 280. As shown in step S11, the first # 1 ( Acquisition of the search pointer (VMGM_LU_SRP) of VMGM_LU at n = 1) is determined. The search pointer (VMGM_LU_SRP) of the VMGM_LU is acquired as shown in step S12. As shown in step S13, it is confirmed whether the language code (= b) (VMGM_LCD) described in the search pointer (VMGM_LU_SRP) of VMGM_LU matches the language code (= B) specified for the playback apparatus, that is, the default language code. Is done. If they do not match, the search pointer number is incremented (n = n + 1) as shown in step 14, and the incremented number n exceeds the number (a) of the language units (VMGM_LU_Ns) in the video manager menu. It is confirmed whether there is any. If the number n is set equal to or greater than the number (a) of language units (VMGM_LU_Ns) in the video manager menu, the search operation for the video manager menu (VMGM) is terminated as shown in step S16. If the number n is within the number (a) of the language units (VMGM_LU_Ns) in the video manager menu, the process returns to step S13, the search pointer (VMGM_LU_SRP) of the nth VMGM_LU is obtained, and steps S13 to S15 are performed again. Executed.

  In step S13, if the language code (= b) (VMGM_LCD) described in the search pointer (VMGM_LU_SRP) of VMGM_LU matches the language code (= B) specified for the playback apparatus, that is, the default language code, step As shown in S17, a VMGM language unit (VMGM_LU) 252 corresponding to the language code described in the VMGM_LU search pointer (VMGM_LU_SRP) is acquired. The number (VMGM_PGCI_Ns) of VMGM_PGCI is acquired from the VMGM language unit information (VMGM_LUI). Next, as shown in step S18, the VMGM_PGC category (VMGM_PGC_CAT) is acquired from the VMGM_PGCI search pointer (VMGM_PGCI_SRP) 254. Therefore, the VMGM_PGC number corresponding to the menu ID (= “0001” or “0010”) and the entry type (= 1) is obtained from the VMGM_PGC category (VMGM_PGC_CAT). Here, the menu ID (= “0001” or “0010”) corresponds to a language menu for VMGM or a title menu for VMGM. The start address (VMGM_PGC_SA) of VMGM_PGC corresponding to the acquired VMGM_PGC number is acquired from the VMGM_PGCI search pointer (VMGM_PGCI_SRP), and the corresponding PGC is acquired from the VMGM video object set (VMGM_VOBS) 276 as shown in step 19. It is reproduced.

  Accordingly, a VMG menu as shown in FIG. 61 is displayed as an example. A video title set in which a collection of hit songs sung by a singer in such a menu is collected. In this example, it corresponds to the Beatles hit song collection and Elvis Presley hit song collection (1-a, 1-b) and its karaoke. A video title set, in this example, either the Beatles karaoke hit song collection or the Elvis Presley karaoke hit song collection (2-a, 2-b) can be selected. When a karaoke hit song collection (by singer) is selected by inputting the corresponding key from the key operation unit and display unit 4 according to this menu, the menu of the video title set for karaoke is reproduced according to the flow shown in FIG. Is done.

  When the video manager menu is played back, the system CPU 50 determines the number of video, audio and sub-picture streams for volume menu described in the information management table (VMGI_MAT) 78 of the volume manager (VMGI) 75 and Parameters for video manager menu playback are set in each video decoder unit 58, audio decoder unit 60, and sub-picture decoder unit 62 based on the respective attribute information acquired and the attribute information. Also, according to the attribute information, the video processing unit 201, the audio processing unit 202, the audio mixing unit 203, and the sub-picture reproduction processing unit 207 in the D / A and reproduction processing unit 64 are set.

  When the search for the video title set menu is started as shown in step S20 of FIG. 62, the title set search pointer table (TT_SRPT) 279 is transferred to a predetermined location in the system ROM & RAM unit 52 by this search and stored. Next, the system CPU unit 50 obtains the final address of the title search pointer table (TT_SRPT) 79 from the title search pointer table information (TSPTI) 92 and at the same time the title search pointer corresponding to the input number from the key operation / display unit 4 From (TT_SRP) 93, the video title set number (VTSN), the program chain number (PGCN) and the start address (VTS_SA) of the video title set corresponding to the input number are obtained. The system CPU unit 50 acquires the target title set from the start address (VTS_SA) of the title set.

  Next, as shown in FIG. 33, video title set information (VTSI) 294 of the title set is acquired from the start address (VTS_SA) of the video title set 72 shown in FIG. The end address (VTSI_MAT_EA) of the video title set information management table (VTSI_MAT) 298 shown in FIG. 34 is obtained from the video title set information management table (VTSI_MAT) 298 of the video title set information (VTSI) 294. 1 is set according to the attributes based on the number of audio and sub-picture data streams (VTS_AST_Ns, VTS_SPST_Ns) and video, audio and sub-picture data attribute information (VTS_V_ATR, VTS_A_ATR, VTS_SPST_ATR). Is done. That is, according to the attribute information, the video processing unit 201, the audio processing unit 202, the audio mixing unit 203, and the sub-picture reproduction processing unit 207 in the D / A and reproduction processing unit 64 are set. Further, it is confirmed from the VTS category (VTS_CAT) that this video title set is karaoke, and similarly, each part of the playback device is set for karaoke playback. That is, each part of the playback apparatus is set for karaoke playback in the same manner as the operation described with reference to FIGS.

  By this search from the video title set information management table (VTSI_MAT) 298, the start address (VTSM_PGCI_UT_SA) of the VTSM_PGCI unit table (VTS_PGCI_UT) 300 for the video title set menu (VTSM) is obtained. Therefore, the VTSM_PGCI unit table 300 is acquired, and the number (a) of the language units (VTSM_LU_Ns) of the video title menu is acquired from the table information (VTSM_PGCI_UTI) 300, and the first # 1 (n = 1) as shown in step S21. VTSM_LU search pointer (VTSM_LU_SRP) 351 is determined to be acquired. The search pointer (VMGM_LU_SRP) 351 of the VMGM_LU 352 is acquired as shown in step S22. As shown in step S23, whether the language code (= b) (VTSM_LCD) described in the search pointer (VMGM_LU_SRP) 351 of the VMGM_LU 352 matches the language code (= B) specified for the playback device, that is, the default language code. It is confirmed. If they do not match, the search pointer number is incremented (n = n + 1) as shown in step 24, and the incremented number n exceeds the number (a) of language units (VTSM_LU_Ns) in the video title set menu. It is confirmed whether there is any. When the number n is set to be equal to or greater than the number (a) of language units (VTSM_LU_Ns) in the video title set menu, the search operation for the video title set menu (VTSM) is ended as shown in step S26. If the number n is within the number (a) of the language units (VTSM_LU_Ns) in the video title set menu, the process returns to step S22, the search pointer (VTSM_LU_SRP) 351 of the nth VTSM_LU is obtained, and steps S23 to S25 are again performed. Is executed.

  In step S23, if the language code (= b) (VTSM_LCD) described in the search pointer (VMGM_LU_SRP) 351 of the VTSM_LU matches the language code (= B) designated for the playback device, that is, the default language code, As shown in step S27, the VTSM language unit (VTSM_LU) 352 corresponding to the language code described in the search pointer (VMGM_LU_SRP) 351 of the VTSM_LU is acquired. The number of VTSM_PGCIs (VTSM_PGCI_Ns) is obtained from the VMGM language unit information (VTSM_LUI). Next, the VTSM_PGC category (VTSM_PGC_CAT) is acquired from the VTSM_PGCI search pointer (VTSM_PGCI_SRP) 354 as shown in step S28. Therefore, the VTSM_PGC number corresponding to the menu ID (= “0001” or “0010”) and the entry type (= 1) is acquired from the VTSM_PGC category (VTSM_PGC_CAT). Here, the menu ID (= “0001” or “0010”) corresponds to a language menu for VTSM or a title menu for VTSM. The start address (VTSM_PGC_SA) of VTSM_PGC corresponding to the acquired VTSM_PGC number is acquired from the VTSM_PGCI search pointer (VTSM_PGCI_SRP), and as shown in step 29, the corresponding PGC is acquired from the VTSM video object set (VTSM_VOBS) 276. It is reproduced.

  Therefore, a VTS menu as shown in FIG. 63 is displayed as an example. In such a menu, a video title set, in this example, a video title set corresponding to the Elvis Presley Karaoke hit song collection, which is a program chain (PGC) of any of his hit songs Nos. 1 to n Can be selected. When a karaoke song 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 lyrics corresponding to the sub menu, for example, as shown in FIG. 64 is displayed. The That is, as already described as sub-pictures, 32 sub-picture streams are prepared, so the karaoke provider prepares lyrics such as English, Japanese, German, French, etc. according to the music. That is, the sub-picture can be displayed using the synchronization information (SYNCI) shown in FIG. In addition, a menu for selecting one of eight audio streams can be prepared as another submenu. That is, it is possible to select one of an audio stream in which only the performance is stored, an audio stream in which a guide melody is added to the performance, and an audio stream in which the other party's voice is stored along with the performance. When a selection item is selected from such a menu, a program chain corresponding to the selected song is reproduced.

  If the menu (VTSM) for the video title set (VTS) has a simple configuration, a video object set for the menu of the video title set from the video title set information management table (VTSI_MAT) 298 shown in FIG. The start address (VTSM_VOB_SA) of (VTSM_VOB) 295 is acquired and the video title set menu is displayed by the video object set (VTSM_VOB) 295.

  The sub-picture stream and the audio stream are changed or executed according to the flowchart shown in FIG. First, as shown in step S30, selection or change of a sub-picture stream or audio stream is designated by a menu. Here, it is assumed that the Xth stream is designated. After this designation, the number of audio streams (n) from the VTS_AST_Ns or VTSSPST_Ns in the VTS management table (VTS_MAT) 298 in the currently selected video title set as shown in step S31, or the number of sub-picture streams ( n) is obtained. As shown in step S32, it is confirmed whether the selected Xth stream is smaller than the number n of streams. If the selected stream number X is larger than the number n of streams, the stream selection operation is canceled because there is no corresponding stream. If the selected stream number X is smaller than the number n of streams, the audio related to the stream usable in the PGC from the PGCI general information (PGCI_GI) 305 corresponding to the selected PGC as shown in step S33. Alternatively, PGCI_AST_CTL or PGCI_SPST_CTL is acquired as sub-picture stream control information. Here, as shown in step S34, when there is no stream of the selected number X among the m streams that can be used, the stream selection operation is stopped because there is no corresponding stream. If there is a stream of the selected number X among the m streams that can be used as shown in step S34, the Xth audio stream attribute (VTS_AST_SPST) selected as shown in step 35, or the sub stream The attribute (VTS_SPST_SPST) of the video stream is acquired. According to this attribute, an attribute parameter is set as shown in step 36. Next, as shown in step 37, the stream number X is set as a system parameter. By specifying the stream number in this way, the operation of selecting and playing back a specific stream is completed as shown in step S38.

  When a program chain (PGC), that is, a specific music piece is designated by the key operation / display unit 4, the target program chain is searched in the following procedure. This program chain search is not limited to the program chain for the titles in the video title set, and the same procedure is applied to the search for the program chain for the menu even in a relatively complicated menu whose menu is composed of program chains. Is adopted. The start address of the program chain information table (VTS_PGCIT) 300 in the video title set (VTS) shown in FIG. 34 described in the management table (VTSI_MAT) 298 of the video title set information (VTSI) 294 is acquired and shown in FIG. Information (VTS_PGCIT_I) 302 of the VTS program chain information table is read. From this information (VTS_PGCIT_I) 302, the number of program chains (VTS_PGC_Ns) and the end address (VTS_PGCIT_EA) of the table 300 shown in FIG. 37 are acquired.

  When the number of the program chain is designated by the key operation / display unit 4, the category (VTS_PGCIT_CAT) of the program chain shown in FIG. 38 from the VTS_PGCIT search pointer (VTS_PGCIT_SRP) 303 shown in FIG. The start address of the VTS_PGC information 104 corresponding to (VTS_PGCIT_SRP) 303 is acquired. From this program chain category, it is confirmed that the corresponding program chain is karaoke. Also, the program chain general information (PGC_GI) shown in FIG. 39 is read by the start address (VTS_PGCI_SA). The category of the program chain (PGC) is also acquired by this general information (PGC_GI). In addition, the playback time (PGC_CAT, PGC_PB_TIME) and the like are acquired by the general information (PGC_GI), and the start address (C_POSIT) 108 of the cell playback information table (C_PBIT) and the cell location information table described in the general information (PGC_GI) ( C_PBIT_SA, C_POSIT_SA) is acquired. The video object identifier (C_VOB_IDN) and the cell identification number (C_IDN) as shown in FIG. 46 are obtained from the start address (C_PBIT_SA) as the cell position information (C_POSI) shown in FIG.

  44 is acquired from the start address (C_POSIT_SA), and the start address (C_FVOBU_SA) of the first VOBU 85 in the cell of FIG. 42 described in the playback information (C_PBI) and the last VOBU The start address (C_LVOBU_SA) is acquired and the target cell is searched. With respect to the cell playback order, the playback cells 284 are sequentially determined with reference to the program map shown in FIG. 41 of the PGC program map (PGC_PGMAP) 306 shown in FIG. The data cells 284 of the program chain determined in this way are successively read from the video object set 296 and input to the data RAM unit 56 via the system processor unit 54. The data cell 284 is supplied to the video decoder unit 58, the audio decoder unit 60, and the sub-picture decoder unit 62 based on the reproduction time information and decoded, and is converted into a signal by the D / A and reproduction processing unit 64 to be monitored. The image is reproduced and the sound is reproduced from the speaker units 8 and 9.

  Regarding the karaoke playback, refer to the description already given with reference to FIGS. 12, 13 and 14A to 14F regarding the karaoke playback from the optical disc according to the initial version. In the description of FIGS. 12, 13, and 14A to 14F, the sequence should be replaced with a program chain.

  In the above description, it has been described that a certain title set is audio with audio and the other title sets are karaoke, but it is clear that all title sets may be karaoke. It is.

  Further, the following karaoke may be prepared for each title set or each program chain. For example, a collection of songs by age group may be prepared for each title set or program chain. For example, a title set of a 1960s hit song collection and a 1980s hit song book or a program chain may be prepared. Moreover, you may prepare for every title set for every singer, or in a program chain. For example, a title set of the Beatles hit song collection and the Elvis Presley hit song collection, or a program chain may be prepared. In addition, each title set or program chain may be prepared for each genre, for example, country song collection, singing method, for example, solo song collection or duet song collection.

When a song title is specified in the program chain, the program corresponds to each karaoke song.

  Next, with reference to FIGS. 66 to 71, video data in the logical format shown in FIGS. 15 to 59, a recording method on the optical disc 10 for reproducing the video data, and a recording system to which the recording method is applied. explain.

  FIG. 66 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. 66, as a source 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-video player (Subpicture, source) 203 is adopted. These generate main video data, audio data, and sub-video data under the control of the 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, and A / D conversion is performed by these encoders 206, 207, 208 under the control of the system controller (Sys, con) 205 and encoded by the respective compression methods. , Audio data and sub-picture data (Comp, 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) are output to the file formatter (FFMT) 214 by the system controller (Sys, con) 205 and have already been described. Management information such as setting conditions and attributes of each data is stored in the memory 216 by the system controller (Sys, con) 205 as a file.

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

  The main video data and audio data are encoded according to the flow shown in FIG. 67, and encoded main video and audio data (Comp, Video, Comp, Audio) data are created. That is, when the encoding process is started, parameters necessary for encoding the main video data and audio data are set as shown in step 70 of FIG. Some of the set parameters are stored in the system controller (Sys, con) 205 and used by the file formatter (FFMT) 214. As shown in step S271, main video data is pre-encoded using parameters, and an 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, audio data is also encoded at the same time. If necessary, as shown in step S273, partial re-encoding of the main video data is executed, and the re-encoded main video data is replaced. Main video data and audio data are encoded by this series of steps. Further, as shown in steps S274 and S275, the sub-picture data is encoded to generate encoded sub-picture data (Comp, Sub-pict). That is, parameters necessary for encoding the sub-picture data are set similarly. Some of the parameters set as shown in step S274 are stored in the system controller (Sys, con) 205 and used by the file formatter (FFMT) 214. Sub-picture data is encoded based on this parameter. By this process, the sub-picture data is encoded.

  According to the flow shown in FIG. 68, the encoded main video data, audio data, and sub-video data (Com, Video, Comp, Audio, Comp, Sub-pict) are combined and described with reference to FIGS. It is converted into such a video data title set structure. That is, as shown in step S276, a cell as a minimum unit of video data is set, and cell reproduction information (C_PBI) related to the cell is created. Next, as shown in step S277, the configuration of the cells constituting the program chain, main video, sub-video, audio attributes, etc. are set (some of these attribute information uses information obtained at the time of each data encoding) 33, a video title set information management table information (VTSI_MAT) 278 including information related to a program chain 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 necessary. The encoded main video data, audio data, and sub-video data (Com, Video, Comp, Audio, Comp, Sub-pict) are subdivided into fixed packs and can be played back in the order of the time code of each data. Each data cell is arranged while arranging an NV pack at the head for each unit, and a video object (VOB) composed of a plurality of cells as shown in FIG. 6 is constructed. Formatted to structure.

  In the flow shown in FIG. 68, the program chain information uses the database of the system controller (Sys, con) 205 in the process of step S277, or re-enters data as necessary. And described as program chain information (PGI).

  FIG. 69 shows a disc formatter system for recording the title set formatted as described above onto an optical disc. As shown in FIG. 69, in the disc formatter system, these file data are supplied to the volume formatter (VFMT) 226 from the memories 220 and 222 in which the created title set is stored. In the volume formatter (VFMT) 226, management information is extracted from the title sets 284 and 286 to create the video manager 71, and logical data to be recorded on the disc 10 is created in the arrangement order shown in FIG. Error correction data is added to the logical data created by the volume formatter (VFMT) 226 in the disk formatter (DFMT) 228, and reconverted into physical data to be recorded on the disk. In the modulator 230, the physical data created by the disk formatter (DFMT) 228 is converted into recording data that is actually recorded on the disk, and this modulated recording data is recorded on the disk 10 by the recorder 232.

  A standard flow for creating the above-described disc will be described with reference to FIGS. FIG. 70 shows a flow in which logical data to be recorded on the disk 10 is created. That is, as shown in step S280, 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, the video manager 71 is created from the parameters set as shown in step S281 and the video title set information 281 of each video title set 72. Thereafter, as shown in step S282, the data is arranged in the order of the video manager 71 and the video title set 72 along the corresponding logical block numbers, and logical data to be recorded on the disc 10 is created.

  Thereafter, a flow for creating physical data for recording on the disc as shown in FIG. 71 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 error correction data are combined to create a physical sector. Thereafter, physical data is created by combining physical sectors as shown in step S285. In this way, the physical data generated in the flow shown in FIG. 71 is subjected to a modulation process based on a certain rule to create recording data. Thereafter, the recording data is recorded on the disk 10.

  In the above-described embodiments, the high-density recording type optical disk has been described as the recording medium. However, the present invention is not limited to the optical disk, such as a magnetic disk or other physically high-density recording medium. It can also be applied to.

1 is a block diagram showing an outline of an optical disc apparatus according to an embodiment of the present invention. It is a block diagram which shows the detail of the mechanism part of the disk drive apparatus shown in FIG. FIG. 2 is a perspective view schematically showing a structure of an optical disc loaded in the disc drive apparatus shown in FIG. 1. It is explanatory drawing which shows the structure of the logical format which concerns on the initial version of the optical disk shown in FIG. It is explanatory drawing which shows the structure of the disc information file shown by FIG. It is explanatory drawing which shows the structure of files, such as a movie file shown in FIG. 4, and a music file. It is explanatory drawing for demonstrating the hierarchical structure of the video data area of the file shown by FIG. It is explanatory drawing which shows 1 GOP which comprises the video cell shown by FIG. It is explanatory drawing which shows the parameter described in the cell information table of the file management information area shown by FIG. It is explanatory drawing which shows the parameter described in the sequence information table of the file management information area shown by FIG. It is explanatory drawing which shows the parameter described in the file management table of the file management information area shown by FIG. FIG. 2 is a block diagram showing in detail an audio control circuit for audio in the D / A & reproduction processing unit shown in FIG. 1. It is a flowchart for demonstrating operation | movement of the reproducing | regenerating apparatus at the time of karaoke mode in the system shown by FIG. It is explanatory drawing which shows the example of the screen display with respect to the key operation in the system shown by FIG. 5 shows the structure of the 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. 16 shows the structure of the video manager shown in FIG. FIG. 16 shows an example of the structure of a video object set (VOBS) shown in FIG. The parameters and contents of the volume manager information management table (VMGI_MAT) in the video manager (VMGI) shown in FIG. 15 are shown. The structure of the title search pointer table (TSPT) in the video manager (VMGI) shown in FIG. The parameters and contents of the title search pointer table information (TSPTI) of the title search pointer table (TSPT) shown in FIG. The parameters and contents of the title search pointer (TT_SRP) corresponding to the input number of the title search pointer table (TSPT) shown in FIG. The figure for demonstrating the structure of the program chain stored in a file. The structure of the video manager menu PGCI unit table (VMGM_PGCI_UT) shown in FIG. 16 is shown. The parameters and contents of the VMGM_PGCI unit table information shown in FIG. 23 are shown. 17 shows parameters and contents of the video manager menu language unit search pointer shown in FIG. FIG. 24 shows a structure of a video manager menu language unit shown in FIG. 27 shows parameters and contents of the video manager menu language unit information shown in FIG. The parameters and contents of the video manager menu program chain information shown in FIG. 26 are shown. The structure of the video title set attribute table shown in FIG. 16 is shown. The parameters and contents of the video title set attribute table information shown in FIG. 29 are shown. The parameters and contents of the video title set attribute search pointer shown in FIG. 29 are shown. The parameters and contents of the video title set attribute shown in FIG. 29 are shown. The structure of the video title set shown in FIG. 16 is shown. The parameters and contents of the video title set information management table (VTSI_MAT) of the video title set information (VTSI) shown in FIG. 33 are shown. 34 shows a bitmap table of audio stream attributes (VTS_AST_ATR) described in the table (VTSI_MAT) shown in FIG. The structure of the table (VTS_PGCIT) of video title set program chain information shown in FIG. 33 is shown. The parameters and contents of the information (VTS_PGCITI) of the video title set program chain information table (VTS_PGCIT) shown in FIG. The parameters and contents of the search pointer (VTS_PGCIT_SRP) of the video title set program chain information table (VTS_PGCIT) shown in FIG. 36 are shown. The structure of the program chain information (VTS_PGCI) for the video title set corresponding to the program chain of the video title set program chain information table (VTS_PGCIT) shown in FIG. The parameters and contents of the general information (PGC_GI) of the program chain of the program chain information (VTS_PGCI) shown in FIG. 39 are shown. 40 shows a structure of a program chain map (PGC_PGMAP) of the program chain information (VTS_PGCI) shown in FIG. 42 shows parameters and contents of an entry cell number (ECELLN) for a program described in the program chain map (PGC_PGMAP) shown in FIG. 40 shows the structure of a cell playback information table (C_PBIT) of program chain information (VTS_PGCI) shown in FIG. The parameters and contents of the cell playback information (C_PBI) in the cell playback information table (C_PBIT) shown in FIG. 43 are shown. The structure of the cell position information (C_POSI) of the program chain information (VTS_PGCI) shown in FIG. 39 is shown. The parameters and contents of the cell location information (C_POSI) shown in FIG. 45 are shown. The structure of the video title set menu PGC unit table shown in FIG. 33 is shown. 47 shows parameters and contents of the video title set PGCI unit table information shown in FIG. 47 shows parameters and contents of the video title set language search pointer shown in FIG. FIG. 48 shows the structure of a video title set menu language unit shown in FIG. 47. FIG. The parameters and contents of the video title set menu language unit information shown in FIG. 50 are shown. The parameters and contents of the video title set PGCI search pointer shown in FIG. 50 are shown. The structure of the navigation pack shown in FIG. 17 is shown. 18 shows the structure of the video, audio, and sub-picture pack shown in FIG. The parameters and contents of the reproduction control information (PCI) of the navigation pack shown in FIG. 53 are shown. 55 shows parameters and contents of general information (PCI_GI) in the reproduction control information (PCI) shown in FIG. The parameters and contents of disc search information (DSI) of the navigation pack shown in FIG. 53 are shown. 57 shows parameters and contents of DSI general information (DSI_GI) of the disc search information (DSI) shown in FIG. FIG. 57 shows parameters and contents of synchronized playback information (SYNCI) of the video object (VOB) shown in FIG. It is a flowchart which shows search operation | movement of a video manager menu. An example of a video manager menu is shown. It is a flowchart which shows search operation | movement of a video title set menu. An example of a video title set menu is shown. The other example of a video title set menu is shown. It is a flowchart which shows the selection operation | movement of an audio stream and a subpicture stream. 1 is a block diagram illustrating an encoder system that generates video files by encoding video data. FIG. FIG. 67 is a flowchart showing an encoding process shown in FIG. 66. FIG. 68 is a flowchart for creating a video data file by combining main video data, audio data, and sub-picture data encoded in the flow shown in FIG. 67. 1 is a block diagram showing a disk formatter system for recording a formatted video file on an optical disk. FIG. 57 is a flowchart for creating logical data to be recorded on a disc in the disc formatter shown in FIG. 56. It is a flowchart which creates the physical data for recording on a disc from logical data.

Explanation of symbols

DESCRIPTION OF SYMBOLS 6 ... Monitor part, 8 ... Speaker part, 10 ... Optical disk, 14 ... Transparent base, 16 ... Light reflection layer, 28 ... Data recording area, 30 ... Disk drive part, 32 ... Optical pick-up, 34 ... Objective lens, 36 ... Pho --Cass 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 , 64 ... D / A and playback 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 terminal area, 75 ... bus table ..., Directory record area, 80... File area, 82... File management information area, 84... Menu video data area, 86. Data cell, 101 ... File management information area, 102 ... Video data area, 113 ... File management table, 114 ... Sequence information table, 115 ... Cell information table, 120 ... Microphone audio input unit, 124 ... Sub audio signal amplitude adjustment unit , 125 ... sub audio signal L / R balance adjustment unit, 126 ... audio tone control unit, 129 ... reverberation effect control means, 201 ... video tape recorder, 202 ... audio tape recorder, 203 ... sub video player, 205 ... Controller 206 206 Video encoder 207 Audio encoder 208 Sub video encoder 205 System controller 220 222 Memory 226 Volume formatter 228 Disc formatter 230 Modulator 232 Recorder 270 ... Volume and file structure area, 271 ... Video manager (VMG), 272 ... Video title set (VTS), 273 ... Other recording areas, 274 ... Files, 275 ... Video manager information (VMGI), 276 ... Video object set (VMGM_VOBS), 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 (VTS_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 ... For video title set menu Video object set (VTSM_VOBS),
296 ... Video object set (VTSTT_VOBS) for the title of the video title set, 297 ... Backup of video title set information (VTSI), 298 ... Video title set information management table (VTSI_MAT), 299 ... Video title set part of title 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 playback information table (C_PBIT), 308 ... Cell position information table Bull (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 (VTS_PGCIT_SRP), 316 ... PCI Packet, 317 ... DSI Packet

Claims (3)

In a playback system for playing a video title from an optical disc comprising a video manager and a video title set,
The video manager is composed of video manager information and a menu video object set,
The video title set is composed of video title set information and a video object set for a title.
In the title and menu video object sets, an audio stream, a sub-picture stream, and video data are stored.
The video object set for titles and menus is composed of cells, the cells are composed of video object units, and the video object unit is a combination of video, audio and sub-picture packs. And a program chain is defined as a set of the cells,
The video manager information includes a video management information management table, a title search pointer table, a menu program chain information unit table, and a video title set attribute table.
The video management information management table describes a start address of the menu video object set and a start address of the title search pointer table,
In the title search pointer table, a video title set number of the video title set and a start address of the video title set specified by the video title set number are described.
The video title set attribute table includes video title set attribute table information in which the number of video title sets is described, video title set attribute in which video title set attribute information is described, and the title Includes a video title set attribute search pointer to search for video title set attributes,
The menu program chain information unit table has a video manager menu language unit and a video manager menu language unit search pointer for searching the video manager menu language unit. In the manager menu language unit search pointer, the video manager menu language code and the start address of the video manager menu language unit are described.
The video manager menu language unit includes a menu program chain information for defining a menu program chain for menu reproduction, and a menu program chain information search pointer for searching the menu program chain information. Have
The video title set information includes a title set information management table and a title program chain information table,
In the title set information management table, the start address of the video object set for title, the number of audio streams of the video title set, and the audio stream attributes of the video title set are described. ,
Similarly, the video title set attribute information describes the number of the audio streams and the audio stream attributes of the video title set,
The title program chain information table includes a title program chain information for defining a title program chain for title reproduction, and a search chain corresponding to a program chain number for searching the title program chain information. Have a pointer,
The title program chain information includes program chain general information, a cell playback information table in which cell playback information is described in playback order to specify the playback order of the cells in the title program chain,
The program chain general information describes program chain audio stream control information, and the program chain audio stream control information describes audio stream numbers that can be used in the program chain. ,
The cell playback information describes the address of the first video object unit and the address of the last video object unit constituting the cell,
The playback system includes:
Has a language code specific to the playback system,
Obtaining the menu program chain information unit table and comparing the video manager menu language code in the video manager menu language unit search pointer with the unique language code to determine the video When the manager menu language code matches the unique language code, the video manager menu language unit is acquired, the menu program chain is reproduced, and the title search pointer table is used. The video title set is searched, the cell playback information table is obtained from the title program chain information, the title program chain is played back, and the video stream is input in response to the change input of the audio stream.・The number of streams of the audio stream is obtained from the title set information and compared with the change destination stream number. If the stream number is smaller than the number of streams, the change destination stream number is the program chain audio An acquisition means for comparing an audio stream number that can be used in the program chain in the stream control information and extracting the audio stream by the change destination stream number if the change destination stream number is usable;
Decoding video, audio and sub-picture streams extracted from the video pack, audio pack and sub-picture pack included in the video object unit in the cell using the video title set attribute; Output means for outputting video signals and audio signals;
A reproduction system comprising: In a playback method for playing a video title from an optical disc comprising a video manager and a video title set,
The video manager is composed of video manager information and a menu video object set,
The video title set is composed of video title set information and a video object set for a title.
In the title and menu video object sets, an audio stream, a sub-picture stream, and video data are stored.
The video object set for titles and menus is composed of cells, the cells are composed of video object units, and the video object unit is a combination of video, audio and sub-picture packs. And a program chain is defined as a set of the cells,
The video manager information includes a video management information management table, a title search pointer table, a menu program chain information unit table, and a video title set attribute table.
The video management information management table describes a start address of the menu video object set and a start address of the title search pointer table,
In the title search pointer table, a video title set number of the video title set and a start address of the video title set specified by the video title set number are described.
The video title set attribute table includes video title set attribute table information in which the number of video title sets is described, video title set attribute in which video title set attribute information is described, and the title Includes a video title set attribute search pointer to search for video title set attributes,
The menu program chain information unit table has a video manager menu language unit and a video manager menu language unit search pointer for searching the video manager menu language unit. In the manager menu language unit search pointer, the video manager menu language code and the start address of the video manager menu language unit are described.
The video manager menu language unit includes a menu program chain information for defining a menu program chain for menu reproduction, and a menu program chain information search pointer for searching the menu program chain information. Have
The video title set information includes a title set information management table and a title program chain information table,
In the title set information management table, the start address of the video object set for title, the number of audio streams of the video title set, and the audio stream attributes of the video title set are described. ,
Similarly, the video title set attribute information describes the number of the audio streams and the audio stream attributes of the video title set,
The title program chain information table includes a title program chain information for defining a title program chain for title reproduction, and a search chain corresponding to a program chain number for searching the title program chain information. Have a pointer,
The title program chain information includes program chain general information, a cell playback information table in which cell playback information is described in playback order to specify the playback order of the cells in the title program chain,
The program chain general information describes program chain audio stream control information, and the program chain audio stream control information describes audio stream numbers that can be used in the program chain. ,
The cell playback information describes the address of the first video object unit and the address of the last video object unit constituting the cell,
In the playback method,
Acquiring the program chain information unit table for the menu, and comparing the video manager menu language code in the video manager menu language unit search pointer with a language code specific to the playback method If the video manager menu language code and the unique language code match, obtain the video manager menu language unit and play the menu program chain;
Searching the video title set using the title search pointer table, obtaining the cell playback information table from the title program chain information, playing back the title program chain,
In response to the change input of the audio stream, the number of streams of the audio stream is obtained from the video title set information and compared with the change destination stream number, and the stream number is smaller than the number of streams. For example, the change destination stream number is compared with the audio stream number that can be used in the program chain in the program chain audio stream control information, and if the change destination stream number is usable, the change destination stream number Take an audio stream by number,
Decoding video, audio and sub-picture streams extracted from the video pack, audio pack and sub-picture pack included in the video object unit in the cell using the video title set attribute; A reproduction method characterized by outputting as a video signal and an audio signal. Prepare video data, audio stream and sub-picture stream for menu, and video data, audio stream and sub-picture stream for title,
The structure of the title video object set from the title video data, audio stream and sub-picture stream, and the structure of the menu video object set from the menu video data, audio stream and sub-picture stream In this preparation, the title and menu video object sets are made up of cells, the cells are made up of video object units, and the video object units are made up of video, audio and sub-pictures. A combination of video packs, which is defined as one playback unit, a program chain is defined as a set of the cells,
Title set information management table in which the start address of the title video object set and the start address of the title program chain information table are described, and a title program that defines the program chain for playing the title A chain information table is prepared, video title set information including the title set information management table and the title program chain information table is prepared, and the video title set information and the title video object Compose a video title set with a set,
A video manager information management table in which a start address of the menu video object set and a start address of the title video object set are described, and a menu program chain information unit table are prepared. Video manager information including a video manager information management table and a menu program chain information unit table is prepared, and a video manager including the video manager information and the menu video object set is configured. ,
In an optical disk recording method for physically recording the video manager and the video title set on an optical disk,
The video manager information includes a title search pointer table and a video title set attribute table,
In the video management information management table, a start address of the title search pointer table is described,
In the title search pointer table, a video title set number of the video title set and a start address of the video title set specified by the video title set number are described.
The video title set attribute table includes video title set attribute table information in which the number of video title sets is described, video title set attribute in which video title set attribute information is described, and the title Includes a video title set attribute search pointer to search for video title set attributes,
The menu program chain information unit table has a video manager menu language unit and a video manager menu language unit search pointer for searching the video manager menu language unit.
In the video manager menu language unit search pointer, a video manager menu language code and a start address of the video manager menu language unit are described.
The video manager menu language unit includes menu program chain information for determining playback of a menu program chain, and a menu program chain information search pointer for searching the menu program chain information.
In the title set information management table, the number of audio streams of the video title set and audio stream attributes of the video title set are described.
Similarly, the video title set attribute information describes the number of the audio streams and the audio stream attributes of the video title set,
The title program chain information table has program chain information for determining the reproduction of the title program chain and a search pointer for searching for the program chain information.
The program chain information includes program chain general information, a cell playback information table in which cell playback information is described in playback order to specify the playback order of the cells in the title program chain,
The program chain general information describes program chain audio stream control information, and the program chain audio stream control information describes audio stream numbers that can be used in the program chain. ,
The cell playback information includes an address of the first video object unit and an address of the last video object unit constituting the cell,
Acquires the menu program chain information unit table during playback, and compares the video manager menu language code in the video manager menu language unit search pointer with the language code specific to the playback device. When the video manager menu language code matches the unique language code, the video manager menu language unit is obtained, the menu program chain is played, and the audio stream is changed and input. In response, the number of streams of the audio stream is obtained from the video title set information and compared with the change destination stream number. If the stream number is smaller than the number of streams, the change destination stream number is Program -Compared with the audio stream number that can be used in the program chain in the chain audio stream control information. If the change destination stream number is usable, the audio stream is extracted with the change destination stream number and the audio is extracted. A recording method for an optical disc, wherein the video manager and the video title set are recorded so as to output a signal.

Images