JP2003036657A - Object sharing system of a plurality of contents - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a management structure for utilizing the video contents produced in compliance with DVD videos in DVD audio. SOLUTION: A sub-directory of the audio and a sub-directory of the video are disposed under a route directory. The sub-directory of the video includes video contents VTS and management information VMG thereof. The sub- directory of the audio includes audio contents ATS and the management information AMG thereof. The management information VMG of the video can only access the video contents VTS. However, the management information AMG of the audio is constituted to be able to access not only the audio contents ATS but the video contents VTS as well.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for sharing objects of a plurality of contents (various video contents, various audio contents, etc.).

The present invention also relates to an information medium having management data for sharing objects of a plurality of contents, a device for reproducing recorded information from this medium, a method for recording information including the management data on this medium, And a method for reproducing information from this medium based on the management data.

[0003]

2. Description of the Related Art A DVD video disc has been developed as an optical disc that can record various information such as multi-angle video, sub-video, multi-lingual audio, and multi-channel audio while recording video (moving images) with high image quality and high density. It has started to spread and penetrate into the general market (DVD is an abbreviation for Digital Versatile Disc).

This DVD video disc, together with compressed multi-channel audio (AC-3, MPEG, etc.), is an uncompressed linear PCM (48 kHz sampling, 16-bit quantization to 96 kHz sampling, 24-bit).
Is also a specification that can be supported. The linear PCM of this DVD video has high-sampling and high-bit high-quality sound specifications exceeding the conventional music CD (44.1 kHz sampling, 16-bit quantization), especially 96 kHz.
Sampling 20 to 24 bit linear PCM has sufficient qualification as a next-generation digital audio disc (so-called super CD or super audio disc).

However, the specifications of the DVD video are created in priority to the video rather than the audio, and the DVD is not limited to the sampling frequency and the number of quantization bits, and the number of recordable channels and recordable time.
It is also expected that audio priority specifications will exceed the audio specifications of video.

In response to the above expectations, the DVD audio specification has been studied (however, this DVD audio specification is not yet a conventional technology). With this DVD audio specification, the 48K-
96 kHz sampling, 16 to 24 bit linear P
As a matter of course, CM can support up to 192 kHz sampling and 24-bit linear PCM. In addition, there is a possibility that higher sound quality specifications will be introduced in future version upgrades of the DVD audio specifications.

As described above, DVD audio can be used for future scale-up because D high-capacity recording that is included in the target even for digital high-definition video is possible.
This is because the DVD audio has a part that can be used in common with the VD video.

Further, the DVD audio has a feature that it can enjoy future technical, market, and economic advantages that will be available as the DVD video evolves.

For example, if the recording time is kept constant by using a large-capacity DVD disc that will be put to practical use as a DVD video in the DVD audio, the sampling frequency, the number of quantization bits, the number of recording channels, etc. used for recording are It has the potential to increase and increase. DVD-RAM (or rewritable DV) that will be put to practical use in the near future
The technology of a DVD video recorder using a D-RW or a write-once DVD-R) can be applied to a DVD audio recorder that will be put to practical use.

Further, if the market size of DVD-Video is expanded due to the spread of DVD-Video, a medium (DVD-ROM disc, DVD-RA) can be used between DVD-Video and DVD-Audio.
M / DVD-RW disc, DVD-R disc, etc., device parts (disc drive, optical pickup,
Various ICs), various control programs, etc. are becoming common, and the cost reduction of DVD audio products with high sound quality and many features is accelerated. If DVD audio becomes widespread, DVD video will become available with the evolution of DVD audio.
You will be able to enjoy the economic advantage.

[0011]

The management methods for controlling the reproduction of video (video) or audio (music, etc.) contents are different from the conventional ones (for example, compact disc CD and laser disc LD). It was common to manage the playback of content produced according to. On the other hand, with the recent diversification of user demands, the boundary between video and music has become ambiguous, and it is desirable to use some of the content that can be played alone as video in music, or video created for music. There is an increasing demand among content creators (content providers) that they can use the content in common by making it possible to reproduce the video independently.

[0012] In response to the above request from the content provider,
The DVD audio specification according to the present invention can answer. That is, although the DVD audio specifications are being considered with priority over audio over video, it is possible to construct a system compatible with DVD video and DVD audio. In other words, in the DVD audio specification,
An audio-only disc (A disc) whose contents are only DVD audio, and an audio + video disc (AV disc) whose contents include audio and video are possible. In this case, it is possible to access the video content when reproducing the audio content of the AV disc.

Further, in the DVD audio specification according to the present invention, not only a video image as a subset of the DVD video specification but also a high-definition still picture can be added to a sound of a high sound quality specification and text information can be added. It is also possible to add menus (visual menus that content providers can freely design).

The first object of the present invention is the aforementioned DVD.
According to audio specifications, not only DVD audio information but also part of DVD video information (for example, some video)
It is also to provide a digital information medium that can be accessed.

A second object of the present invention is to provide an apparatus for reproducing information from the above digital information medium.

A third object of the present invention is to provide a method of recording information on the above digital information medium.

A fourth object of the present invention is to provide a method of reproducing information from the above digital information medium.

[0018]

In order to achieve the first object, in the digital information medium according to the present invention, first and second contents (ATS / VTS) having different objects are provided.
Multiple independent areas (DVD audio zone, DV
D video zone). The first and second contents (ATS / VTS) are managed by the first and second management blocks (A
Has MG / VMG). The first management block (AMG) has first information (AMGI) for managing access to both the first content (ATS) and the second content (VTS).

In the medium for the first purpose, the second management block (VMG) has the second content (VT).
Second information (VMGI) for managing access to S)
May have.

In the medium for the first purpose, the first management block (AMG) is the second management block (VM).
G) or the second content (VTS), which is physically or logically lower in address.

In the medium for the first purpose, the first content (ATS # 1) is the second content (VT).
Information (link information) for accessing S) may be included.

In the medium for the first purpose, the recording information file may be managed by a hierarchical file structure including the following sub directories and root directories. That is, a first subdirectory (ATS directory) including a data file (ATS_01_0.AOB) storing the first content (ATS) and a data file (AUDIO_TS.IFO) storing the first information (AMGI). And; a data file (VTS_0 that stores the second content (VTS).
1_1. VOB) and a data file (VIDEO_TS.IFO) in which the second information (VMGI) is stored.
Second subdirectory containing VTS directory
File management of recording information can be performed with the root directory including the first subdirectory (ATS directory) and the second subdirectory (VTS directory).

In the first object medium, the data file (ATS_01_0.AOB) in the first sub-directory (ATS directory) is composed of an object (AOTT) containing at least audio data but not video data. The data file (VTS_01_1.VOB) in the second subdirectory (VTS directory) may be composed of an object (VTS) including video data.

In the first object medium, the first search information (ATT_SR for AOTT) for accessing the object (AOTT) in which the first information (AMGI) includes the audio data but does not include video data.
P) and an object (VT) containing the video data.
S) may be included in the second search information (ATT_SRP for AVTT).

In the medium of the first object, the second information (VMGI) is the search information (A) for accessing only the object (VTS) including the video data.
ATT_SRP for VTT) may be included.

Further, in order to achieve the first object,
The optical disc according to the present invention has a lead-in area (27) on the center side and a volume space (28) on the outer periphery thereof.
Furthermore, it has a lead-out area (26) on the outer circumference;
The volume space (28) includes an audio zone (71) followed by a video zone (72); the audio zone (71) includes audio management information (AMG) and audio content (ATS); The video zone (72) contains video management information (V
MG) and video content (VTS). In this optical disc, the audio content (ATS) and the video content (VTS)
May include a data cell (VTS_C # 2, etc.) commonly managed by the audio management information (AMG).

In the first purpose optical disc, the video content (VTS) is the video management information (V
Data cell (VTS_C # 2) managed by MG)
Etc.), the audio management information (A
The data cell (VTS_C # 2, etc.) managed by the MG) or the video management information (VMG) can be composed of a set of a plurality of data packs of a fixed size (2048 bytes).

Further, in order to achieve the first object, another optical disk according to the present invention has a lead-in area (27) on the center side, a volume space (28) on the outer periphery thereof, and a lead-out on the outer periphery thereof. Area (2
6); the volume space (28) is preceded by an audio zone (71), followed by a video zone (7).
2); the audio zone (71) includes audio management information (AMG) and audio content (ATS); the video zone (72) includes video management information (VMG) and video content (VT).
S) is included. In this optical disc, the audio content (ATS) includes one or more data cells (audio cells, picture cells, silent cells) managed by the audio management information (AMG), and the data cells (audio cells, pictures) Cell or silent cell) Each has one or more data packs (A_PCK, SP) with a fixed size (2048 bytes)
(CT_PCK, etc.).

In another optical disc for the above-mentioned first purpose,
At least one data cell (audio cell)
Can be composed of a pack of audio information (A_PCK).

In another optical disk for the above-mentioned first purpose,
At least one data cell (silent cell)
Is a pack (A_P) of audio information consisting of silence information.
CK).

In another optical disc for the above-mentioned first purpose,
At least one of the data cells (picture cells) is
It can be composed of a pack of still picture information (SPCT_PCK).

In another optical disk for the above-mentioned first purpose,
The audio content (ATS) includes audio title set information (ATSI) for managing the content, and the audio title set information (ATSI) manages one or more programs (PG #) constituting the audio content (ATS). The program chain information (ATS_PGCI) in the program chain information (ATS_PGCI in ATS_PGCIT) is included.
Indicates information indicating the recording position of the data cell (audio cell, picture cell, silent cell) (ATS in FIG. 28).
_C_SA, ATS_C_EA) may be included.

In another optical disc for the above-mentioned first purpose,
The audio content (ATS) may include an audio title set (ATT or AVTT) including information about both audio and video, and an audio only title set (AOTT) including information about audio only.

In another optical disk for the above-mentioned first purpose,
The audio management information (AMG) is information (AMGI in FIG. 18) of a search pointer (ATT_SRP) for accessing the audio title set (ATT).
ATT_SRPT in _MAT, located at ATT_SRPT_SA in FIG. 20).

In another optical disk for the above-mentioned first purpose,
The audio management information (AMG) is information (AOTT_SRPT_SA in AMGI_MAT of FIG. 18) of a search pointer (AOTT_SRP) for accessing the audio only title set (AOTT).
AOTT_SRPT) of FIG. 20 located at.

In another optical disc for the above-mentioned first purpose,
The audio content (ATS) has a plurality of sampling frequencies (48 kHz, 96 kHz, 192 k).
By a predetermined sampling frequency (for example, 192 kHz) selected from Hz and a predetermined number of quantization bits (for example, 20 bits) selected from a plurality of types of quantization bits (16 bits, 20 bits, 24 bits, etc.) Digitized audio data (AO
TT_AOB) and this audio data (AOTT_
Attribute information (AOTT_AOB_AT of FIG. 25 included in ATSI of FIG. 24) indicating the predetermined sampling frequency (for example, 192 kHz) and a predetermined number of quantization bits (for example, 20 bits) used in AOB).
R) can be included.

In order to achieve the second object, the reproducing apparatus according to the present invention has an audio content (ATS).
And an audio management block (A
MG), a video content (VTS) and a video management block (VMG) for managing the reproduction thereof, and the audio management block (AMG) includes the audio content (ATS) and the video content (VTS).
Audio management information (AM
It is configured to reproduce the audio content (ATS) or the video content (VTS) from a digital information medium (AV disc 10) including GI). This reproducing apparatus uses the contents (FIG. 20) of the audio management information (AMGI) from the digital information medium (10).
Management information retrieving means (3)
0, 50-54); the audio management information (AMG
Audio content extracting means (30, 50 to 54, 60) for extracting the content (ATS cell ATT_SRP for AOTT in FIG. 20) of the audio content (ATS) in FIG. Other contents of management information (AMGI) (AV in FIG. 20)
Video content extracting means (30, 50 to 54, 58) for extracting the content (video cell of FIG. 8) of the video content (VTS) based on TT_SRP for TT.

The reproducing apparatus for the second purpose has a plurality of sampling frequencies (48 kHz, 96 kHz, 192).
by a predetermined sampling frequency (for example, 192 kHz) selected from a plurality of kinds of quantization bits (16 bits, 20 bits, 24 bits, etc.) Digitized audio data (AO
TT_AOB) and this audio data (AOTT_
Attribute information (A in FIG. 25) indicating the predetermined sampling frequency (for example, 192 kHz) and the predetermined number of quantization bits (for example, 20 bits) used in AOB).
OTT_AOB_ATR) and a digital information medium (AV disc 10) can be configured to be reproduced. In this reproducing apparatus, the management information extracting means (50)
Is the predetermined sampling frequency (for example, 192 kHz) from the attribute information (AOTT_AOB_ATR).
And a display configured to detect the predetermined number of quantized bits (eg, 20 bits) and indicating the detected predetermined sampling frequency (eg, 192 kHz) and a predetermined number of quantized bits (eg, 20 bits) (FIG. A display means (4B) for performing 30 FL display section 4B (right end) is further provided.

In order to achieve the third object, in the recording method according to the present invention, a volume space (28) including an audio zone (71) and a video zone (72) arranged after the audio zone (71). When information is recorded on an information recording medium (10) having a), audio management information (AMG) and audio contents (ATS) are recorded in the audio zone (71).
Is recorded, and video management information (VMG) and video content (VTS) are recorded in the video zone (72).

In order to achieve the fourth object of the above invention,
In the reproducing method according to the present invention, the audio management information (A
MG) and audio content (ATS) recorded audio zone (71) and video management information (V
MG) and a video zone (72) in which video content (VTS) is recorded, and an information recording medium (1
0) when reproducing information from 0), the audio content (ATS) or the video content (VTS) based on the audio management information (AMG).
To play the content, and based on the video management information (VMG), the video content (VTS)
To access and play the content.

[0041]

DETAILED DESCRIPTION OF THE INVENTION A digital information recording / reproducing system according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view for explaining the structure of an optical disc that can be used as a recording medium for DVD audio.

As shown in FIG. 1, this optical disk 10
Is a pair of transparent substrates 1 each provided with a recording layer 17.
4 has a structure in which the adhesive layers 20 are bonded together. Each board 14
Can be made of polycarbonate having a thickness of 0.6 mm, and the adhesive layer 20 can be made of an ultrathin (for example, 40 μm thick) ultraviolet curable resin. These pair of 0.
By laminating the 6 mm substrate 14 so that the recording layer 17 is in contact with the surface of the adhesive layer 20, the large-capacity optical disk 10 having a thickness of 1.2 mm is obtained.

A center hole 22 is provided in the optical disk 10, and a clamp area 24 for clamping the optical disk 10 during rotational driving is provided around the center hole 22 on both sides of the disk. A spindle of a disc motor is inserted into the center hole 22 when the optical disc 10 is loaded in a disc drive device (not shown).
Then, the optical disc 10 is clamped in the clamp area 24 by a disc clamper (not shown) while the disc is rotating.

The optical disc 10 has, around the clamp area 24, an information area 25 in which video data, audio data and other information can be recorded.

A lead-out area 26 is provided on the outer peripheral side of the information area 25. In addition, the lead-in area 27 is provided on the inner peripheral side in contact with the clamp area 24.
Is provided. A data recording area 28 is defined between the lead-out area 26 and the lead-in area 27.

Recording layer (light reflecting layer) 17 in the information area 25
Recording tracks are continuously formed in, for example, a spiral shape. The continuous track is divided into a plurality of physical sectors, and these sectors are numbered consecutively. Various data is recorded on the optical disc 10 using this sector as a recording unit.

The data recording area 28 is an actual data recording area and includes a DVD audio data recording area and a DVD video data recording area. (In the case of a pure audio disc, the DVD video data recording area may not be used.) In the DVD audio data recording area, mainly audio data is recorded / reproduced as a pit string (optically reflected by laser reflected light). The physical shape or phase state that causes such changes. In some cases, still picture data may be recorded in this DVD audio data recording area. The audio data recorded in the DVD audio data recording area may include, in addition to normal music data, completely silent data (data that does not intentionally produce sound, not a silent portion as music). .

On the other hand, in the recording area of the DVD video data, as recording / playback information, video data (main video data) of movies, sub-video data of subtitles / menus, and audio data of dialogue / sound effects are recorded. It is recorded in the same pit row.

When the optical disc 10 is a DVD-RAM disc (or rewritable disc; DVD-RW disc) which is a single-sided single layer and double-sided recording, each recording layer 17 is provided.
Is a mixture of two zinc sulfide / silicon oxides (ZnS / S
iO2) phase change recording material layer (eg Ge2Sb2T)
e5) may be sandwiched between three layers.

The optical disk 10 has a single-sided single-layered R
In the case of an AM disc, the recording layer 17 on the read surface 19 side
Can be composed of a triple layer including the phase change recording material layer. In this case, the layer 17 arranged on the opposite side from the reading surface 19 does not need to be an information recording layer, and may be a simple dummy layer.

The optical disc 10 is a single-sided read type dual layer R.
In the case of an AM / ROM disc, the two recording layers 17 are
One phase change recording layer (back side from the reading surface 19; for reading and writing) and one semitransparent metal reflection layer (reading surface 19
The front side when viewed from the side; only for playback).

When the optical disk 10 is a write-once DVD-R, polycarbonate is used as the substrate, gold is used as the reflecting film (not shown), and ultraviolet curable resin is used as the protective film (not shown). In this case, an organic dye is used for the recording layer 17. As this organic dye, cyanine, squarylium, croconic, triphenylmenthane dye, xanthene, quinone dye (naphthoquine, anthraquinone, etc.), metal complex dye (phthalocyanine, porphyrin, dithiol complex, etc.) and others can be used. is there.

For writing data to such a DVD-R disc, the output is 6 to 12 m at a wavelength of 650 nm, for example.
It can be performed using a semiconductor laser of about W.

The optical disk 10 is a single-sided read type dual layer R
In the case of an OM disc, the two recording layers 17 can be composed of one metal reflective layer (the back side when viewed from the read surface 19) and one semitransparent metal reflective layer (the front side when viewed from the read surface 19).

Read-only DVD-ROM disc (for DVD audio and / or DVD video) 1
In the case of 0, a pit train is formed in advance on the substrate 14 by a stamper, a reflective layer of metal or the like is formed on the surface of the substrate 14 on which the pit train is formed, and this reflective layer is used as the recording layer 17. . In such a DVD-ROM disc 10, normally, no groove is provided as a recording track, and a pit row formed on the surface of the substrate 14 functions as a track.

In each of the various optical discs 10 described above, read-only ROM information is recorded in the recording layer 17 as an embossed signal. On the other hand, the substrate 14 having the recording layer 17 for reading and writing (or for write once) is not engraved with such an emboss signal, but instead is engraved with a continuous groove groove. A phase change recording layer or the like is provided in the groove. Read / write DVD
In the case of a RAM disk, in addition to the groove, the phase change recording layer in the land portion is also used for information recording.

When the optical disk 10 is a single-sided reading type (whether the recording layer is one layer or two layers), the substrate 14 on the back side viewed from the reading surface 19 does not need to be transparent to the reading / writing laser. In this case, label printing may be performed on the entire surface of the back substrate 14.

FIG. 2 is a diagram for explaining the correspondence relationship between the data recording area 28 of the optical disk 10 of FIG. 1 and the recording track of the data recorded therein.

The disk 10 is a DVD-RAM (or D
In the case of VD-RW), the main body of the disk 10 is housed in a cartridge (not shown) in order to protect the delicate disk surface. When the DVD-RAM disk 10 together with the cartridge is inserted into a disk drive of a DVD player (FIGS. 29 to 30) which will be described later, the disk 10 is pulled out from the cartridge and clamped on a turntable of a spindle motor (not shown), so that an optical disk (not shown) It is rotationally driven so as to face the head.

On the other hand, the disk 10 is a DVD-R or D
In the case of the VD-ROM, the main body of the disc 10 is not housed in the cartridge, and the bare disc 10 is set directly in the disc tray of the disc drive.

Recording layer 17 of information area 25 shown in FIG.
The data recording tracks are continuously formed in a spiral shape. As shown in FIG. 2, the continuous track is divided into a plurality of logical sectors (minimum recording unit) having a constant storage capacity, and data is recorded on the basis of the logical sectors. The recording capacity of one logical sector is set to 2048 bytes (or 2 kbytes), which is the same as the data length of one pack.

The data recording area 28 is an actual data recording area in which management data and audio data for DVD audio are recorded, and management data, main video (video) data, sub-video data and Audio data is also recorded.

Although not shown, the disk 1 of FIG.
When 0 is a DVD-RAM disc, the data recording area 28 can be divided into a plurality of recording areas (a plurality of recording zones) in a ring shape (annular ring shape). In this case, although the angular velocity of disk rotation is different for each recording zone, the linear velocity or angular velocity can be made constant within each zone. When the disc 10 shown in FIG. 2 is a DVD-ROM disc, various data are recorded in the entire data recording area 28 at a constant linear velocity.

FIG. 3 is a diagram for explaining the hierarchical structure of information recorded in the DVD audio zone among various information recorded on the optical disc of FIG.

The data recording area 28 formed on the optical disk 10 of FIG. 2 has a structure as shown in FIG. The logical format of this structure is defined in accordance with, for example, one of the standards, ISO9660 and Universal Disc Format (UDF) Bridge.

The data recording area 28 between the lead-in area 27 and the lead-out area 26 is assigned as a volume space 28. The volume space 28 includes a space for volume and file structure information (volume / file structure 70), D
Space for VD standard applications (DVD audio zone 71 and DVD video zone 72),
A space (other recording area 73) other than the application of this standard can be included.

The volume space 28 is physically divided into a large number of sectors, and these physical sectors are numbered consecutively. The logical address of the data recorded in this volume space (data recording area of FIG. 2) 28 means the logical sector number as defined by ISO9660 and UDF bridge. The logical sector size here is set to 2048 bytes (2 kbytes) like the effective data size of the physical sector. Serial numbers are added to the logical sector numbers in ascending order of the physical sector numbers.

Unlike the logical sector, redundant information such as error correction information is added to the physical sector. Therefore, to be exact, the physical sector size does not match the logical sector size.

As shown in FIG. 3, volume space 2
8 includes a volume / file structure area 70, a DVD audio zone 71, a DVD video zone 72 and another recording area 73. Each of these areas (70-7
3) is divided on the boundary of the logical sector in FIG.
Here, one logical sector is defined as 2048 bytes, and
The logical block is also defined as 2048 bytes. Therefore, one logical sector is defined as one logical block.

The volume / file structure area 70 is
It corresponds to the management area defined by SO9660 and UDF bridge. Based on the description of the area 70, the contents of the audio manager 711 are stored in the system memory inside the DVD player (FIG. 29) described later.

The DVD audio zone 71 is composed of an audio manager (AMG) 711 and one or more audio title sets (ATS # m) 712 (the number m of audio title sets is 99 at the maximum).

The AMG 711 includes an audio manager information (AMGI) file 7110 and an audio manager menu video object set (AMGM_).
VOBS) file 7111 and audio manager information backup (AMGI_BUP) file 7112
Composed of and. Note that AMGM_VOBS7111 is an optional file and may not exist.

Each ATS 712 has an audio title set information (ATSI) file 7120, an audio only title audio object set (AOTT_AOBS) file 7121, and an audio title set information backup (ATSI_BU).
P) file 7123. AOTT
_AOBS7121 is composed of 1 to 9 files, but these are optional files and may not be included.

As will be described later with reference to FIG. 6, AOTT_A
OBS7121 is one or more audio objects A
It defines a group of OBs. Each AOB defines a collection of one or more audio title set cells (ATS_C #). Then, an audio title set program is composed of a group of one or more cells,
A group of one or more programs constitutes an audio title set program chain PGC.

If one PGC is compared to one opera,
The plurality of cells forming the PGC can be interpreted as corresponding to music or singing parts of various scenes in the opera. The contents of this PGC (or the contents of the cell) are
It is determined by the software provider that produces the content recorded on the disc 10. That is, the provider is the program chain information ATS_PGC in the ATS.
By using the cell reproduction information ATS_C_PBI written in I, the cells forming the AOTT_AOBS 7121 can be reproduced as intended. (ATS_PGCI
24 to 28 for ATS_C_PBI.
Will be described later with reference to. ) In the other recording area 73, information that can be used in the above-mentioned video title set VTS 72 or other information that is not related to the video title set can be recorded. This area 73 is not essential and may be deleted if it is not used.

FIG. 4 is a diagram for explaining the hierarchical structure of information recorded in the DVD video zone among various information recorded on the optical disc of FIG. Hereinafter, the description of the parts already described with reference to FIG.

Based on the description of the volume / file structure area 70, the contents of the video manager 721 are stored in the system memory inside the DVD player (FIG. 29) described later.

The DVD video zone 72 is composed of a video manager (VMG) 721 and one or more video title sets (VTS # n) 722 (the maximum number n of video title sets is 99).

The VMG 721 includes a video manager information (VMGI) file 7210 and a video object menu video object set (VMGM_VOB).
S) file 7211 and video manager information backup (VMGI_BUP) file 7212. Note that VMGM_VOBS7211 is an optional file and may not exist.

Each VTS 722 includes a video title set information (VTSI) file 7220 and a video object set for a video title set menu (VTSM).
_VOBS) file 7221 and the video object set of the video title set title (VTSTT_
VOBS) file 7222 and video title set information backup (VTSI_BUP) file 722
3 and 3. Note that VTSM_VOBS7221
Is an optional file and may or may not be present.

Each video title set VTS 72 includes
Video data compressed according to the MPEG standard (video pack described below), audio data compressed according to a predetermined standard or uncompressed (audio pack described below),
And run-length compressed sub-picture data (sub-picture pack described later; including bitmap data in which one pixel is defined by multiple bits), and information for reproducing these data (navigation pack described later; presentation control) Information and data search information).

As will be described later with reference to FIG. 8, VTSTT_
VOBS7222 is one or more video object VOs.
It defines a group of B's. Each VOB defines a collection of one or more video title set cells (VTS_C #). A group of one or more cells constitutes a program of a video title set, and a group of one or more programs constitutes a program chain PGC of a video title set.

If one PGC is compared to one drama,
The plurality of cells forming the PGC can be interpreted as corresponding to various scenes in the drama. The contents of the PGC (or the contents of the cell) are determined by the software provider who produces the contents recorded on the disc 10. That is, similarly to the case of ATS_PGCI described in FIG. 3, the provider uses VTSTT_VOBS7222 by using the cell reproduction information (not shown) written in the program chain information VTS_PGCI in the VTS.
It is possible to reproduce the cells constituting the cell as intended.

FIG. 5 shows program chain information ATS_PGCI of the DVD audio zone of FIG. 3 and program chain information VTS_ of the DVD video zone of FIG.
Specific video information (VTS_C # from both PGCI)
2 is a diagram illustrating a case where VTS_C # 3, VTS_C # 3, and VTS_C # 5 are commonly (but differently) accessed. In other words, FIG. 5 illustrates the case where the same video object VOB is referenced in different ways from the audio side reproduction unit and the video side reproduction unit.

That is, when the video is reproduced from the video title set side, the cell reproduction information (not shown) in the VTS_PGCI is used to determine the cell VTS_C # 1 of the VOB.
~ VTS_C # 6 are reproduced in sequence.

On the other hand, when performing video reproduction (or still reproduction) from the audio title set side, ATS
According to the cell playback information in _PGCI (Fig. 28), VOB
Cells VTS_C # 2, VTS_C # 3 and VTS_
C # 5 is selectively reproduced.

In this case, cell data (VTS_C # 2, VTS) having the same ATS and VTS in the same disk 10 is used.
_C # 3 and VTS_C # 5) do not have to be separately provided, so that the limited capacity of the disk 10 can be effectively used.

FIG. 6 shows an example of the data structure of the recorded contents (AOTT_AOBS) in the DVD audio zone of FIG.

AOTT_AOB described with reference to FIG.
S7121 defines a group of one or more audio objects AOTT_AOB #, as shown in FIG. Each AOTT_AOB is one or more audio cells AT
It defines a collection of S_C #. A program is composed of one or more cells ATS_C #, and a program chain PGC is composed of one or more programs. The PGC constitutes a logical unit showing all or part of the audio title.

In the example of FIG. 6, each audio cell ATS_
Audio pack A_P with C # of 2048 bytes
It is composed of a set of CKs. These packs are the minimum unit when performing data transfer processing. Also, the minimum unit for logical processing is a cell unit, and the logical processing is performed in this cell unit.

FIG. 7 shows another example of the data structure of the recorded contents (AOTT_AOBS) of the DVD audio zone of FIG. The example of FIG. 7 is different from that of FIG. 6 in the configuration of the cell and the pack.

That is, the audio object AOTT_AOB # 1 in FIG. 7 is the picture cell ATS_C #.
1, silent cell ATS_C # 2, audio cell A
It includes TS_C # 3 and the like. Next AOTT_AOB #
Although not shown, 2 may be composed of only the audio cell ATS_C. The main is an audio cell, but a picture cell and / or a silent cell are appropriately added to it.

The picture cell ATS_C # 1 is composed of one or more still picture packs SPCT_PCK, and the silent cell ATS_C # 2 is composed of one or more silent audio packs A_PCK. The playback time of this silent cell is set to about 0.5 seconds or more. The audio cell ATS_C # 3 is configured by an audio pack A_PCK, including a real-time information pack RTL_PCK having real-time information as appropriate.

When the data transfer of the still picture pack SPCT_PCK is performed during the reproduction operation of the DVD audio player, a short time (about 0.5 seconds to 0.
The sound breaks for 6 seconds). This break in sound is called an audio gap. It is bad that an audio gap occurs during music playback, so the above still picture pack SPCT_PC
The data transfer of K is normally performed before the start of the album reproduction in FIG. 9, the start of the specific group reproduction, or the start of the specific track.

Note that once the still picture pack SPCT_PCK has been transferred inside the DVD audio player, the still picture corresponding to the contents of this SPCT_PCK is held in the image memory in the player. The still picture in this memory can be continuously reproduced during the reproduction of the contents (music, etc.) of the audio pack A_PCK (however, the still picture can be deleted from the monitor at any time if the user desires).

FIG. 8 shows an example of the data structure of the recorded contents (VTSTT_VOBS) in the DVD video zone of FIG.

VTSTT_VO described with reference to FIG.
The BS7222 defines a group of one or more video objects VOB #, as shown in FIG. Each VOB
Defines a collection of one or more video cells VTS_C #. Each VTS_C defines a group of one or more video object units VOBU. A program is composed of one or more cells VTS_C #, and a program chain PGC is composed of one or more programs. This PGC constitutes a logical unit showing all or part of a video title or visual menu.

As shown in FIG. 8, each VOBU has a video pack (MPEG) beginning with a navigation pack.
Compressed video data), sub-picture pack (run length compressed bitmap data), and audio pack (uncompressed linear PCM audio data or compressed multi-channel audio data) ing. That is, the video object unit VOBU is defined as a set of all packs recorded from one navigation pack to immediately before the next navigation pack. This navigation pack is incorporated in each VOBU so that an angle change (seamless angle change reproduction or non-seamless angle change reproduction) can be realized.

Similar to the case of FIG. 6 or FIG. 7, these packs are the minimum unit for performing the data transfer processing.
Also, the minimum unit for logical processing is the cell unit,
Logical processing is performed in units of this cell.

The reproduction time of the VOBU is the VOBU
It corresponds to the reproduction time of video data composed of one or more video groups (group of pictures; GOP for short) contained therein, and the reproduction time is set within the range of 0.4 seconds to 1.2 seconds. . 1 GOP is screen data that is normally about 0.5 seconds according to the MPEG standard and is compressed so as to reproduce about 15 images during that time.

If the VOBU contains video data,
A GOP (conforming to the MPEG standard) composed of a video pack, a sub-picture pack and an audio pack is arranged to form a video data stream. But this G
Regardless of the number of OPs, a VOBU is defined on the basis of the GOP playback time, and a navigation pack is always placed at the beginning of the VOBU.

When playing back a DVD video,
Even if the reproduction data is only audio and / or sub-picture data, the reproduction data is configured with VOBU as one unit. For example, assume a case where a VOBU is composed of only an audio pack, starting with a navigation pack. In this case, like the VOB of the video data, the audio pack to be played back within the playback time (0.4 seconds to 1.2 seconds) of the VOBU to which the audio data belongs is stored in the VOBU.

As shown in FIG. 8, VTSTT_VOBS
Is defined as a set of one or more VOBs, and this VOBS
The VOB inside is used for the same purpose.

The VOBS for the menu is usually one V
The OB is composed of a plurality of menu screen display data. On the other hand, a VOBS for a video title set is usually composed of multiple VOBs.

Here, the VOB forming the video object set VTSTT_VOBS for the title set is
Taking a concert video of a certain rock band as an example, it can be considered that it corresponds to the video data of the performance of that band. In this case, by designating a certain VOB, it is possible to reproduce the concert performance music, for example, the third music of the band.

Further, in the VOB which constitutes the video object set VTSM_VOBS for the menu, the menu data of all the songs of the concert performance music of the band is stored, and a specific music, for example, the encore performance music is reproduced according to the display of the menu. be able to.

In a normal video program, one VOB can form one VOBS. In this case, one video stream is completed by one VOB.

On the other hand, for example, in the case of an animation collection of multiple stories or a movie in the omnibus format, one VO
It is possible to provide a plurality of video streams (a plurality of program chains PGC) corresponding to each story in the BS. In this case, the VO corresponding to each video stream
Will be stored in B. At that time, the audio stream and the sub-picture stream related to each video stream are also completed in each VOB.

An identification number (#i; i = 0 to i) is attached to the video object VOB, and the VOB can be specified by this identification number. VOB is
It is composed of one or more cells. A normal video stream is composed of a plurality of cells, but a menu video stream may be composed of one cell.
Each cell has an identification number (#j; j) as in the case of VOB.
= 0 to j) are attached.

FIG. 9 shows an example of the data content recorded in the user accessible DVD audio zone 71 and recorded on one side (one layer or two layers) of the optical disc of FIG.

In the DVD audio system, an album,
It has a hierarchical structure consisting of groups, tracks, and indexes.

The album is the DVD audio disc 10.
Corresponding to one side of, and, for example, "Vol. 1 of Beethoven's work collection" can be assigned to this album. In this case, this album can be composed of, for example, Symphony No. 1 Group # 1 to Symphony No. 9 Group # 9.

Each group (eg group # 1)
It is composed of tracks # 1 to # 4 corresponding to the first to fourth movements of the corresponding symphony (symphony No. 1). Further, each track is composed of indexes # 1 to #i whose contents are appropriately divided into i.

DVD produced with a hierarchical structure as shown in FIG.
When the user plays the audio disc 10, the user sets the disc 10 in the DVD audio player (FIGS. 29 to 30), and then operates a remote controller (not shown) to perform the operation for the group # 1 and the track # 1. Can be selected.

When the user presses the play button on the remote controller after making this selection, the DVD audio player starts playing from the beginning of the first movement of Beethoven's symphony No. 1. When the user further designates a specific index from the remote controller, the designated index portion is searched and reproduced from that portion. (The first index portion of the first track of the first group of the album can be played back by default even if the user does not specify anything.) DV
When playing a D-video disc, the user can recognize the title (such as a particular movie title), but in the case of a DVD audio disc, the user cannot see the "title". The user can see the “album” in FIG.
There are only "groups", "tracks" and "indexes".

FIG. 10 shows a directory structure of information (DVD audio and DVD video data files) recorded on the optical disk of FIG. This figure shows a DVD
It is an example of a file directory structure defined by a file standard.

Similar to the hierarchical file structure adopted by a general-purpose operating system of a computer, a subdirectory of a video title set VTS, a subdirectory of an audio title set ATS, a user-defined directory, etc. are connected under a root directory. .

In the subdirectory of the video title set VTS, various video files (VMGI, VM
Files such as GM, VTSI, VTSM, VTS; Fig. 4
(See) is arranged so that each file is managed in an orderly manner.

Various audio files (files such as AMGI, ATSI, ATS; see FIG. 3) are arranged in the subdirectory of the audio title set ATS, and each file is managed in an orderly manner. There is.

The user can select a specific file (specific VTS
Alternatively, a specific ATS) can be accessed by specifying the path from the root directory to the file.

DV made in conformity with the DVD video standard
When playing back a DVD video disc made in conformity with the DVD video standard, the D video player first reads the management information (VMG) in the video title set VTS directory under the root directory, and uses that information to read the video content. To play. However, VMG
Only the video content (VTS) recorded in the VTS directory can be reproduced by.

On the other hand, a DVD audio player (or DVD video / DVD audio compatible player) made in conformity with the DVD audio standard is a DVD
When reproducing a DVD audio disc made in conformity with the audio standard, first, the management information (AMG) in the audio title set ATS directory under the root directory is read, and the audio content is reproduced by that information. In this case, what can be played back by AMG is not limited to the audio content (ATS) recorded in the ATS directory, but the video content (VTS) in the VTS directory can also be played (the mechanism is shown in FIG. 12 and subsequent figures). See below for reference).

FIG. 11 shows another example of the directory structure of information (DVD audio and DVD video data files) recorded on the optical disk of FIG.

In the example of FIG. 10, the VTS directory is also AT
The S directory is also located at the same hierarchical level below the root directory. On the other hand, in the example of FIG. 11, the ATS directory (child directory) is arranged under the root directory (parent directory), and the VTS directory (grandchild directory) is arranged under the ATS directory.

FIG. 12 is a diagram for explaining a case of accessing a file in the directory on the video content side from the directory on the audio content side in the directory structure of FIG.

That is, in the hierarchical management structure for managing the data files recorded on the AV disc 10, the video title set directory (child directory) and the audio title set directory (child directory) are arranged under the root directory (parent directory). Has been done.

Video title set directory (VT
The S directory) is a directory for handling video content files recorded on the disc 10 and includes a video manager VMG file and one or more video title set VTS files (video content logical units) (FIG. 4). reference).

The audio title set directory (ATS directory) is a directory for handling files of audio contents recorded on the disc 10, and includes files of the audio manager AMG and 1
The file of the above audio title set ATS (logical unit of audio content) is included (see FIG. 3).

The VMG in the VTS directory manages only the VTS, and can only access the VTS in the VTS directory.

On the other hand, the AMG in the ATS directory mainly manages the ATS, but not only the ATS in the ATS directory but also the VTS in the VTS directory.
Is also accessible.

The specific contents will be described later with reference to FIGS. 17 to 20, but AGM is audio manager information AM.
GI (FIG. 17), AMGI includes a search pointer table ATT_SRPT for audio titles (FIG. 17), ATT_SRPT is a search pointer ATT_SRP for audio only titles (AOTT) and search pointer ATT_SRP for audio video (AVTT). (Fig. 20).

That is, the AMG of the ATS directory is
AT by search pointer ATT_SRPT for AOTT
Audio title set ATS # in S directory
1, ATS # 2, ... And the video title sets VTS # 1, VTS # in the VTS directory can be accessed by the AVTT search pointer ATT_SRPT.
2, ... can be accessed. As a result, a certain object (VTS # 1 or the like) can be shared by both video content and audio content. This is one of the important features of the "object sharing system" of the present invention.

FIG. 13 is a diagram for explaining a case where a file in the directory on the audio content side is linked to a file in the directory on the video content side in the directory structure of FIG. 13 is the same as FIG.
It can be regarded as a second modification.

That is, in the example of FIG. 12, the audio manager AMG is configured to access both the audio title set ATS and the video title set VTS, so that a certain VTS is shared by the video content and the audio content. There is.

On the other hand, in the example of FIG. 13, information (link of a predetermined portion of VTS # 1) for linking a certain audio title set (here ATS # 1) to a certain video title set (here VTS # 1). (Pointer, etc.) is being written. By doing this,
For example, audio data in VTS # 1 can be shared by video content and audio content.

FIG. 14 is a data structure diagram for explaining an example of how the file access of FIG. 12 is performed within the volume space of FIGS. 3 and 4. The data structure of FIG. 14 corresponds to the directory structure of FIG.

In FIG. 14, the hatched portion illustrates the content shared by the video content (or video volume) and the audio content (or audio volume).

The basic concept of the data structure in FIG. 14 is that the recording area (VMG + VTS) for video contents and the recording area (AMG + AT) for audio contents are used.
S) and S) are independently recorded in the volume space 28, and video contents commonly used not only for video but also for audio can be managed from AMG.

As a concrete example, in FIG.
While the video title set VTS # 1 managed by the can access a part (cell) of the video object set VOBS # 1, the audio title set ATS # 1 managed by AMG can be the other part (cell) of the VOBS # 1. You can access to. In this example, VTS
A part (see FIG. 8) of cells forming the # 1 video object set VOBS # 1 is shared by the video content and the audio content.

In the data structure of FIG. 14, the DVD audio zone 71 is arranged in the smaller address (closer to the lead-in area 27 of FIG. 3), and the DVD video zone 72 is arranged in the larger address (lead-out of FIG. 3). It is located near the area 26). In this case, AMG is A
When accessing the TS and the VTS, it is sufficient to always use the address that changes in the + direction, and since it is not necessary to handle the address in the-direction, the construction of the reproducing system becomes easy.

FIG. 15 is a data structure diagram for explaining another example of how the file access of FIG. 12 is performed within the volume space of FIGS. 3 and 4. FIG. 15 can be regarded as a modification of FIG.

In FIG. 14, the DVD audio zone 71
Is arranged in the smaller address and the DVD video zone 72 is arranged in the larger address, so that it is not necessary to handle the address in the-direction as described above.

On the other hand, in FIG. 14, the DVD video zone 7
2 has a smaller address (lead-in area 27 in FIG. 3)
3), and the DVD audio zone 71 is arranged at the one with the larger address (the one closer to the lead-out area 26 in FIG. 3). In this case, AMG is AT
When accessing S, the + direction address is handled and VT
When accessing S, an address in the negative direction will be handled. In this case, addressing when accessing a desired object (cell in ATS or VTS) is troublesome, and it becomes difficult to adopt it in a consumer DVD audio player in which product cost is a problem.

However, when a personal computer having a DVD drive is converted into a DVD audio player by software, even if the data structure of FIG. 15 is adopted,
Cost issues can be avoided. In other words, the operating system (or control software) of the personal computer that has once analyzed the data structure of FIG. 15 remaps the address in its own memory, and the data structure physically located in FIG. 15 is seen. It can be converted to the arrangement shown in FIG. Then, the MPU or CPU of the personal computer, as in the case of FIG.
MG will be able to access both ATS and VTS.

FIG. 16 is a data structure diagram for explaining still another example of how the file access of FIG. 12 is performed within the volume space of FIGS. 3 and 4. FIG. 15 can also be regarded as a modification of FIG.

In FIG. 14, the DVD audio zone 71
Is arranged in the smaller address and the DVD video zone 72 is arranged in the larger address, so that it is not necessary to handle the address in the-direction as described above.

On the other hand, in the data structure of FIG. 16, D
The AMG of the VD audio zone 71 is arranged in the smaller address (closer to the lead-in area 27 of FIG. 3), and the VMG of the DVD video zone 72 is larger in the address than the AMG (in the lead-out area 26 of FIG. 3). It is located in the near side). In this case, AMG is ATS
It is sufficient to always use the address changing in the + direction when accessing the VTS and the VTS, and it is not necessary to handle the address in the-direction. Therefore, as in the case of FIG. 14, the construction of the reproduction system becomes easy.

However, in the data structure of FIG. 16, ATS #
1 has a "nested" structure in which VTS # 1 and the like are arranged, the VMG in FIG. 4 cannot recognize that the VTS in the ATS exists in the DVD video zone 72. In this case, the VMG can be treated as if the VTS in the ATS exists in the other recording area 73.

The data structure of FIG. 16 can be used when the AMG can access not only the ATS but also the VTS and the other recording area 73 is used.

The three types of data structures "AMG can access ATS and VTS" have been described above, but the most preferred is the data structure of FIG. The reason is that the desired shared object can be accessed only by addressing in the + direction without address remapping.

FIG. 17 is a diagram for explaining the recorded contents of the audio manager information AMGI in the DVD audio zone of FIG.

The contents handled in the DVD audio zone 71 include the audio-only title AOTT,
There are two types of audio titles with video (or audio / video titles) AVTT.

AOTT is a title in the audio disc (A disc) 10 that does not have a video portion and is recorded under the audio title set directory.
Defined in TS. On the other hand, AVTT is a title in the audio disc (AV disc) 10, has a video portion, and is defined in the VTS recorded under the video title set directory. And AOTT and A
The generic name of VTT is defined as ATT (audio title).

The DVD audio zone 71 in which the ATT data is recorded is AMG711 and one or more (maximum 99) audio title sets (ATS # 1 to ATS # 1).
TS # m) 712.

The AMG 711 includes an audio manager information AMGI file 7110 and an audio manager menu video object set AMGM_VOB.
It is composed of an S file (option file) 7111 and an audio manager information backup AMGI_BUP file 7112.

The AMGI file 7110 includes an audio manager information management table AMGI_MAT and an audio title search pointer table ATT_SR.
It includes PT, audio only title search pointer table AOTT_SRPT, audio manager menu program chain information unit table AMGM_PGCI_UT, and audio text data manager ATXTDT_MG.

In other words, the AMG is the two search information A
It has TT_SRPT and AOTT_SRPT. Where ATT_SRPT is AOTT and AVT
A table describing search information for both T and AOT
T_SRPT is a table that describes search information only for AOTT.

As described above, the search information is set to the AVTT and A
Instead of dividing into two types for OTT, ATT (AOTT
And AVTT) (for ATT_SR in FIG. 20 described later)
PT) and AOTT (AOTT_SR in FIG. 22 described later)
The reason why it is divided into two types is to simplify the reproducing method for various DVD players.

FIG. 18 shows the recorded contents of the audio manager information management table AMGI_MAT included in the audio manager information AMGI of FIG.

That is, in this audio manager information management table AMGI_MAT, the audio manager identifier (AMG_ID); the end address of the audio manager (AMG_EA); the end address of the audio manager information (AMGI_EA); the corresponding optical disc (DVD audio disc) 10 Version number of adopted standard (VERN); Volume setting identifier (VLMS_ID); Number of title sets (TS_N)
s); Provider (software creator / seller) identifier (PVR_ID); Audio manager information management table end address (AMGI_MAT_E)
A); Start address (AMGM_VOBS_) of the video object set in the audio manager menu
SA); audio title search pointer table start address (ATT_SRPT_SA); audio only title search pointer table start address (AOTT_SRPT_SA); audio manager menu program chain information unit table start address (AMGM_PG)
CI_UT_SA); Start address of audio text data manager (ATXTDT_MG_S)
A); Video attributes (AMGM_V_AT) for the video object set in the audio manager menu
R); number of sub-picture streams for audio manager menu (AMGM_SPST_Ns); attribute of sub-picture for video object set of audio manager menu (AMGM_SPST_ATR); number of audio streams for audio manager menu (AM
GM_AST_Ns); Audio attribute (AM) for video object set in Dio Manager menu
GM_AST_ATR); other reserved areas are provided.

Start address AMGM_V of the video object set of the audio manager menu
The start address of AMGM_VOBS is written in OBS_SA with the number of relative blocks from the first logical block of AMG. If there is no AMGM_VOBS, "00000000h" is this AMGM_VOB.
Written to S_SA.

The start address ATT_SRPT_
In SA, the start address of ATT_SRPT is written with the number of relative blocks from the first logical block of AMGI.

The start address AOTT_SRPT
The start address of AOTT_SRPT is written in _SA with the relative block number from the first logical block of AMGI.

ATT_SRPT_SA or AOTT_SRPT_ written in AMGI_MAT of FIG.
From SA, audio title search pointer ATT
_SRPT or the audio-only title search pointer AOTT_SRPT can be found on the disc 10.

FIG. 19 is a diagram for explaining the contents of the audio title search pointer table ATT_SRPT included in the audio manager information AMGI of FIG. AMGI has two types of search pointers ATT_SR.
Although it has PT and AOTT_SRPT,
Indicates a search pointer ATT_SRP that can access both AOTT and AVTT.

That is, ATT_S included in AMGI
The RPT is audio title search pointer table information ATT_SRPTI and one or more audio title search pointers ATT_SRP (ATT_SRP # 1).
~ ATT_SRP # n). ATT_SRPTI is the number of audio title search pointers and ATT_SR
It contains the end address of the PT.

FIG. 20 shows each audio title search pointer (ATT_SR here) included in the audio title search pointer table ATT_SRPT of FIG.
It is a figure explaining the content of SRP # n).

The DVD audio standard is designed to handle not only sound but also images, and AMG has two search information ATT_SRPT and AOTT_SRPT. ATT_SRPT in FIG. 20 is AOTT and A
It is a table describing search information for both VTTs.

In FIG. 20, a search pointer for audio-only title AOTT_ATT_SRP
Is the category of the audio title ATT, the number of programs in the audio title ATT, the total playback time of the audio title ATT, the number of the audio title set ATS, and the audio title set AT.
S title number and audio title set ATS
And the start address of.

[0171] The search pointer AVTT_SRP for audio titles with video includes the category of the audio title ATT, the total playback time of the audio title ATT, the title playback format, the number of angles included in the video, and the parts included in the video. It includes the number of titles, the number of the video title set VTS, the title number of the video title set VTS, and the start address of the video title set VTS.

FIG. 21 is a diagram for explaining the contents of the audio-only title search pointer table AOTT_SRPT included in the audio manager information AMGI of FIG. AMGI has two types of search pointers ATT_SRPT and AOTT_SRPT, but FIG. 21 shows a search pointer AOTT_SRP that can access only AOTT.

That is, AOTT_ included in AMGI
SRPT is audio-only title search pointer table information AOTT_SRPTI and one or more audio-only title search pointers AOTT_.
SRP (AOTT_SRP # to AOTT_SRP # m)
including. AOTT_SRPTI contains the number of audio-only title search pointers and the end address of AOTT_SRPT.

FIG. 22 shows the search pointer table AOTT_SRPT for the audio-only title shown in FIG.
3 is a diagram for explaining the content of an audio only title search pointer (AOTT_SRP # m in this case) included in FIG.

According to the DVD audio standard, not only sound but also image can be handled. AMG has two search information ATT_SRPT and AOTT_SRPT, but AOTT_SRPT in FIG. 22 describes search information only for AOTT. It's a table.

That is, in FIG.
Search pointer AOTT / ATT for only titles
_SRP is a category of the audio title ATT,
Including the number of programs in the audio-only title AOTT, the total playback time of the audio-only title AOTT, the number of the audio title set ATS, the title number of the audio title set ATS, and the start address of the audio title set ATS. There is.

By the way, the title group TT_GR can be designated in the control information of the reproduction title defined in the audio manager AMG.

This title group TT_GR is a collection of one or more audio titles ATT,
It is defined as a unit that guarantees continuous reproduction of the T group. From the user's point of view, the audio title ATT corresponds to a “song”, and the title group TT_GR corresponds to an “album” as a collection of songs (see FIG. 9). In the same way as when the reproduction is started from the beginning or the middle of the album in the record or the CD, the reproduction can be continuously performed to the end of the album as it is. When the reproduction is started from the beginning or the middle ATT of the TT_GR, this TT is continued.
_GR can be played continuously until the end.

The following two types can be defined as the title group TT_GR.

<A1> Audio title group (A
TT_GR); this ATT_GR is a title group TT_GR composed of audio titles ATT defined in the audio title search pointer table ATT_SRPT.

<A2> Audio-only title group (AOTT_GR); this AOTT_GR is the audio-only title search pointer table A.
Title group TT_GR consisting of audio only title AOTT defined in OTT_SRPT
Is.

Audio title group ATT_GR
Is for a player (a player that handles both AOTT and AVTT) capable of reproducing audio and video of an audio standard, and an audio-only title group AOTT_GR is a player capable of reproducing only an audio of an audio standard (only AOTT). Player).

The audio title ATT has the following three types.

<B1> ATT has only AOTT <B2> ATT has only AVTT <B3> ATT has both AOTT and AVTT (here, AOTT and AVTT are the same song) However, in the case of <B1> described above, the search information for AOTT is described in both ATT_SRPT and AOTT_SRPT in the case of having both AOTT which is a version without image and AVTT which is a version with image. And FIG. 22).

In the case of <B2> above, the search information for AVTT is described only in ATT_SRPT (FIG. 2).
0).

In the case of <B3>, the search information for AOTT is described only in AOTT_SRPT, and AV
The search information for TT is described only in ATT_SRPT (see FIG. 20).

FIG. 23 exemplifies the relationship of <B1> to <B3>. FIG. 23 is a group AOTT_GR of audio only titles accessed by the audio only title search pointer AOTT_SRP in the audio manager information AMGI of FIG.
And an audio title group ATT_GR accessed by an audio title search pointer ATT_SRP in the audio manager information AMGI. FIG. 23 shows ATT_SRPT and A.
It can be said that this is an example showing the relationship with OTT_SRPT.

In FIG. 23, the audio title AT
Each of T # 1 and # 9 is composed only of an audio title AVTT with video, and each of ATT # 2 and # 3 is composed of an audio title AVTT with video and an audio-only title AOTT, and ATT #
Each of # 4, # 5, # 7 and # 8 is composed of only the audio only title AOTT.

In the example of FIG. 23, nine audio titles ATT are used, and these are divided into four groups (G
R # 1 to GR # 4) and audio title group A
TT_GR is configured and divided into two groups (GR # 1 to GR # 1).
GR # 2) to form an audio-only title group AOTT_GR.

In this example, the audio title ATT #
1 and # 9 consist of AVTT only, and there is AOT
There is no T. Therefore, ATT # 1 and # 9 are audio-only title groups AOTT_GR.
Does not exist as

Therefore, the audio title group A
Generally, the number of TT_GRs (four in this example) and the number of audio only title groups AOTT_GR (two in this example) do not match.

What is required here is a player (AOTT and AVT) capable of reproducing an image and sound of an audio standard.
The sameness of the title group TT_GR is maintained when the ATT group is played back by a player handling both T) and when the ATT group is played back by a player capable of playing only audio of the audio standard (player handling only AOTT). Is.

That is, the corresponding ATT_GR and AOT
T_GR has the same AT even if the GR number is different.
It must be composed of Ts, and the order of ATTs in TT_GR must be the same. Otherwise, users will be confused. Of course, this means that the ATT (AVTT in FIG. 23 only has AVTT and no AOTT exists).
# 1 and # 9) are excluded.

To satisfy the above "necessity", "AO
A restriction may be added so that “ATT not defined as TT” and “ATT defined as AOTT” are not mixed in one ATT_GR. This allows ATT_G
In the part where both R and AOTT_GR exist,
The identity as TT_GR is maintained.

In the example of FIG. 23, GR # 2 of ATT and GR # 1 of AOTT, and ATT_GR # 3 and AOT.
T_GR # 2 is composed of the same ATT,
The order of ATTs in TT_GR is also the same.

FIG. 24 is a diagram for explaining the recorded contents of the audio title set (ATS) in the DVD audio zone of FIG.

The audio title set ATS includes audio title set information ATSI and audio object set AOT for audio only title.
It is composed of T_AOBS and backup ATSI_BUP of audio title set information.

Audio title set information ATSI
Is an audio title set management table ATSI_
MAT and audio title set program chain information table ATS_PGCIT are included.

The audio title set program chain information table ATS_PGCIT includes audio title set program chain information table information ATS_PGCITI and audio title set program chain information search pointer ATS_PG.
CI_SRP and one or more audio title set program chain information ATS_PGCI are included.

FIG. 25 shows the recorded contents of the audio title set information management table ATSI_MAT shown in FIG.

That is, this audio title set information management table ATSI_MAT contains this audio manager information management table AMGI_MAT,
Audio title set identifier (ATSI_ID);
Audio title set end address (ATS_
EA); End address of audio title set information (ATSI_EA); Version number of adopted audio standard (VERN); End address of audio title set information management table (ATSI_MAT)
_EA); Start address (VTS of video title set VTS for audio-only title AOTT)
_SA); Start address of audio object set for audio-only title (AOTT_A)
OBS_SA) or start address (AOT) of video object set for audio-only title
T_VOBS_SA); Start address (A of program chain information table for audio title set)
TS_PGCIT_SA); attribute of audio object set for audio-only title (AOTT
_AOBS_ATR) or attributes of the video object set for audio-only title (AOTT_V
OBS_ATR) # 0 to # 7; audio title set data mix coefficient (ATS_DM_COEFT) #
0 to # 15: still picture attribute of audio title set (ATS_SPCT_ATR); other reserved areas are provided.

When the ATS does not have AOTT_AOBS in the start address VTS_SA of the VTS for AOTT, VTSTT_ used for AOTT.
The start address of VTS including VOBS (FIG. 8) is written. When the ATS has AOTT_AOBS, "00000000h" is written in this VTS_SA.

The AOTT_AOBS_SA contains AT
When S has AOTT_AOBS, the number of relative logical blocks from the first logical block of ATS gives AO
The start address of TT_AOBS is written. On the other hand, if the ATS does not have AOTT_ABOS, A
In OTT_VOBS_SA, the start address of VTSTT_VOBS is the VTS used for ATS.
It is written with the number of relative logical blocks from the first logical block of the VTS including TT_VOBS.

The ATS_PGCIT_SA contains AT
The start address of ATS_PGCIT is written with the number of relative logical blocks from the first logical block of SI.

The above AOTT_AOBS_ATR or A
Eight OTT_VOB_ARTs, # 0 to # 7, are prepared. When the ATS has AOTT_AOBS, the attribute of AOTT_AOB recorded in the ATS is AO.
Written to TT_AOBS_ATR. On the other hand, ATS
, Does not have AOTT_AOBS, AOTT_V
The attribute of the audio stream in the VOB used for AOTT_VOB in the ATS is written in OB_ART. The adopted sampling frequency (44 to 192 kHz) and the number of quantization bits (16 to 24 bits) are written in the AOTT_AOBS_ATR or AOTT_VOB_ART.

The above ATS_DM_COEFT is AC-
Indicates the coefficient for mixing down audio data with multi-channel output (5.1-channel output) such as 3 or DTS to 2-channel output, and is used only for one or more AOTT_AOB recorded in the ATS. To be done. 1 if the ATS does not have AOTT_AOBS
"0h" is written in all bits of each of the six (# 0 to # 15) ATS_DM_COEFT. This one
Areas for six (# 0 to # 15) ATS_DM_COEFT are constantly provided.

The ATS_SPCT_ATR is AOT.
The attribute of the still picture stream for each still picture in T_AOBS is shown. When there is no still image in AOTT_AOBS, "0000h" is set in ATS_SPCT_ATR.
Is written. Each field of this still picture is AO
It is adjusted to the information recorded in the video stream of each still picture in TT_AOBS.

Each ATS_SPCT_ATR is composed of 16 bits and consists of 2 bits on the MSB side (bits b15 to b1).
4) represents a video compression mode (MPEG2, etc.), and the next 2 bits (bits b13 to b12) are the TV system (N.
TSC, PAL, SECAM, etc., and the next 2 bits (bits b11 to b10) are the aspect ratio (4:
3, 16: 9, etc., and the next 2 bits (bit b9-
b8) is a display mode (4: 3 display, 16: 9 display, letterbox display, etc. on a 4: 3 size TV monitor)
Is represented. The next 2 bits (bits b7 to b6) are reserved bits for future use. The next 3 bits (bits b5 to b3) represent the resolution of the still image (720 horizontal x 480 vertical in NTSC system, 720 horizontal x 576 vertical in PAL system, etc.). Last 3 bits on LSB side (bits b2 to b0)
Is also a reserved bit for the future.

FIG. 26 is a view for explaining the contents of the audio title set program chain information table ATS_PGCIT included in the audio title set information ATSI of FIG. 24 (the recording position of this ATS_PGCIT is ATS_PGCI of ATSI_MAT of FIG. 25).
Written to T_SA).

As described above, this ATS_PGCIT is the audio title set program chain information table information ATS_PGCITI and the audio title set program chain information search pointer AT.
It includes S_PGCI_SRP and audio title set program chain information ATS_PGCI.

The ATS_PGCI_SRP is one or more audio title set program chain information search pointers (ATS_PGCI_SRP # 1 to ATS).
_PGCI_SRP # j), and the ATS_PGC
I is the same number of program chain information (ATS_PGC) for audio title sets as ATS_PGCI_SRP.
I # 1 to ATS_PGCI # j).

Each ATS_PGCI functions as navigation data for controlling the reproduction of the audio title set program chain ATS_PGC.

Here, ATS_PGC is audio
AT is a unit that defines only title AOTT.
S_PGCI and one or more cells (cells in AOTT_AOBS or A used as an object of AOTT)
Cell in OTT_VOBS).

Each ATS_PGCI is the general information (ATS_P) of the audio title set program chain.
GC_GI), audio title set program information table (ATS_PGCIT), and audio title set cell playback information table (ATS_C_)
PBIT) is included.

The ATS_PGCIT is one or more audio title set program information (ATS_PGI).
# 1 to ATS_PGI # k), and ATS_C_
PBIT is the same number of audio title set cell playback information as ATS_PGI (ATS_C_PBI # 1 to AT).
S_C_PBI # k).

FIG. 27 shows the contents of the audio title set program information ATS_PGI of FIG.

This ATS_PGI is the contents of the audio title set program (ATS_PG_CNT).
And the entry cell number of ATS_PG (ATS_PG_
EN_CN), internal standard recording code (ISRC_SPCT) for still picture, and playback start time (FAC_ST_PTM) of the first audio cell in ATS_PG.
And the playback time of ATS_PG (ATS_PG_PB_T
M) and the pause time of ATS_PG (ATS_PG_P
A_TM) is included.

[0218] The ATS_PG_CNT is a description showing the relationship of the physical arrangement between the preceding program and the current program; a description showing the relationship of the reproduction time stamp between the preceding program and the current program; the AOB attribute or the ATS_PG. A description (ATRN) indicating the attributes of the audio stream in the VOB; and AOTT_AOB_ART or AOTT_VOB defined in ATSI_MAT
Description indicating the coefficient table number (DM_COEFT) for downmixing the AOB in the ATS_PG (AOB_PG) having the _ART number using the ATS_DM_COEFT number defined in ATSI_MAT.
N) and are included.

The ATS_PG_EN_CN is the ATS.
_PG number of the first ATS cell (1 to 25)
Up to 5) is included.

The above ISRC_SPCT is ATS_PG.
Internal Standard Recording Code (ISRC) for Still Picture in
Contains the description of. When there is no still image in ATS_PG, all bits of this ISRC_SPCT are “0”.
Is written.

The FAC_ST_PTM is ATS_P.
It includes a description of the lower 32 bits of the reproduction time stamp (or presentation time stamp PTS) described in the head audio packet of the first audio cell in G.

The ATS_PG_PB_TM is the ATS.
It describes the total playback time of each cell in _PG. This total playback time (seconds) is ATS_PG_
It is obtained as a value obtained by dividing PB_TM (32-bit data) by 90,000.

[0223] The ATS_PG_PA_TM is the ATS.
This is a description of the pause time that can be defined at the beginning of _PG. This pause time (sec) is ATS_P
It is obtained as a value obtained by dividing G_PA_TM (32-bit data) by 90,000.

FIG. 28 shows the contents of the audio title set cell reproduction information ATS_C_PBI shown in FIG.

This ATS_C_PBI is the index number (ATS_C_IXN) of the audio title set cell (ATS_C) and the ATS_C type (AT
S_C_TY) and ATS_C start address (A
TS_C_SA) and ATS_C end address (A
TS_C_EA).

ATT is set to A in ATS_C_IXN.
When it has no OBS, "01h" is written.

When ATT has AOBS, ATT_
Depending on the content of C, the content of ATS_C_IXN is as follows: * When ATS_C is the silent cell or picture cell described above, "00h" is written in ATS_C_IXN as the index number of this ATS_C; * When ATS_C is the above-mentioned audio cell, the index number of this ATS_C is ATS_C_
"1" to "99" are written in IXN.

The index number of the first audio cell in ATS_PG (the one having the smaller ATS_C except for picture cells and silent cells) is:
It is set to "1". Similar index number to AT
It may be appropriately assigned to one or more ATS_C in S_PG.

All the bits of ATS_C_TY have A
If the TT has no AOBS, "0" is written.

On the other hand, when ATT has AOBS, A
TS_C_TY contains the configuration of ATT_C (ATS_C_TY).
COMP) and its use (ATS_C_Usage)
Is written.

That is, if the corresponding cell is an audio cell consisting of audio data only, ATS_C_C
"00b" is written in OMP (2 bits); ATS_C_COMP (2 if the corresponding cell is an audio cell including audio data and real-time information.
"01b" is written in (bit); if the corresponding cell is a silent cell consisting only of audio data for silence, "10b" is written in ATS_C_COMP (2 bits).
Is written; if the corresponding cell is a picture cell composed of only still picture data, "11b" is written in ATS_C_COMP (2 bits).

[0232] Further, ATS_C_Usage includes data (0001) indicating a use such as a "spotlight section" for making a particular portion of the audio manager menu AMGM visible (spotlight).
b) is written.

When the ATS has AOTT_AOBS,
In the above ATS_C_SA, A in which ATS_C is recorded
The start address of ATS_C represented by the relative logical block number from the first logical block of OTT_AOBS is described.

On the other hand, when the ATS does not have AOTT_AOBS, the start address of ATS_C represented by the relative logical block number from the first logical block of AOTT_VOBS in which ATS_C is recorded is described in ATS_C_SA.

When the ATS has AOTT_AOBS,
The ATS_C is recorded in the ATS_C_EA.
The end address of ATS_C represented by the relative logical block number from the first logical block of OTT_AOBS is
Described.

On the other hand, when the ATS does not have AOTT_AOBS, the end address of ATS_C represented by the relative logical block number from the first logical block of VTSTT_VOBS in which ATS_C is recorded is described in ATS_C_EA.

FIG. 29 is a block diagram showing an example of an apparatus for reproducing the recorded information of the audio zone of FIG. 3 or the recorded information of the video zone of FIG. 4 from the optical disc (DVD audio disc) of FIG. This playback device is a DVD video player capable of playing video as well as audio.
It has the structure of a DVD audio compatible player. (The description of the specific configuration is omitted, but this player may be compatible with the existing CD playback.) The optical disc playback apparatus of FIG. 1 receives a remote controller 5 that receives a user operation, and an operation status of the remote controller 5. A remote controller receiving unit 4A, a key input unit 4 that accepts a user operation on the reproducing apparatus main body
Further, a panel display unit 4B provided on the reproduction apparatus main body (and / or remote controller) is provided for notifying the user of the operation result by the user, the reproduction status of the DVD audio disc 10, and the like. Other external devices include the monitor unit 6 and the speaker unit 8L / 8R.
Is prepared. (The illustrated speaker unit is a two-channel stereo system, but when performing multi-channel reproduction, a required number of speaker systems and their drive amplifiers are separately prepared.) Key input unit 4, panel display unit 4B, The remote controller 5 and the monitor unit 6 form a visual user interface. The monitor unit 6 is a DV with a still image.
Not only is it used as a playback video monitor of a D audio disc, but also as a display means such as an on-screen display OSD. The monitor unit 6 is not limited to the direct-view CRT display, the liquid crystal display, and the plasma display, and in addition to the direct-view display, various images including the OSD information on the large screen (menu screen, recording site situation). It may be a video projector for projecting a still image obtained by capturing the image.

The user operation information from the remote controller 5 is notified to the microcomputer (MPU or CPU) 500 of the system controller 50 which controls the operation of the entire reproducing apparatus via the remote controller receiver 4A. The control unit 50 also includes a ROM 502 that stores a control program and the like executed by the MPU 500.

User operation information from the key input unit 4 is M
The PU 500 is directly notified. By the MPU 500, the operation status (various setting statuses and DVD disc playback information) of the playback device corresponding to the user operation information is appropriately displayed on the panel display unit 4B.

A RAM 52 and a memory interface (memory I / F) 53 are connected to the MPU 500. Input / output control of the RAM 52 is performed by the memory I / F 5
3 through 3. The MPU 500 uses the RAM 52 as a work area, and based on various processing programs stored in the ROM 502, the disk drive unit 3
0, system processor 54, video decoder 58,
It controls the operations of the audio decoder unit 60, the sub-picture decoder unit 62, and the D / A conversion / reproduction processing unit 64.

The disc drive unit 30 rotationally drives the disc 10 set on the tray of the reproducing apparatus main body (inside the DISK / TRAY / INLET in FIG. 30), and records data (including voice / music information) from the disc 10. In addition to audio data, if recorded on the disc 10, main video data / video data including moving picture information / still picture information, sub-picture data including caption information / menu information, etc.) are read out. The read data is subjected to signal processing such as signal demodulation and error correction in the disk drive unit 30, and is sent to the system processor unit 54 as a pack format data string (see FIGS. 6 to 8).

The system processor section 54 includes the disk 10
It has a packet transfer processing unit (not shown) that determines the types of various packets included in the data reproduced from the packet and delivers the data in the packet to the corresponding decoders (58 to 62). .

The packet transfer processing unit uses the pack format data string from the disk drive unit 30 for each pack type (navigation pack, video pack, sub-picture pack, audio pack, real-time information pack, and still picture pack). Cut into pieces. Transfer data and ID data indicating the type of data are recorded in each of the separated packs.

The system processor section 54 refers to the transfer time data and the ID data to obtain the video pack, the sub-picture pack and the video pack, respectively.
The data is transferred to the video decoder unit 58, the sub-picture decoder unit 62, and the audio decoder unit 60. The still picture pack is sent to the video decoder unit 58. The audio pack or the real-time information pack corresponding to the silent cell is sent to the audio decoder unit 60.

The system processor section 54 also transfers the control data in the navigation pack to the RAM 52 via the memory I / F 53. The MPU 500 refers to the transferred control data in the RAM and controls the reproduction operation of each unit of the reproduction apparatus main body.

The video decoder section 58 is an MPEG in the video pack transferred from the system processor section 54.
The encoded video data is decoded to generate video data before compression.

The sub-picture decoder section 62 decodes the run-length compressed sub-picture data in the sub-picture pack transferred from the system processor section 54, and generates the bit-mapped sub-picture data before compression.

The sub-picture decoder section 62 has a sub-picture decoder for decoding the sub-picture data from the system processor section 54, as well as a highlight process (in the case of DVD video) of the decoded sub-picture data. A highlight processing unit (not shown) for performing spotlight processing (for DVD audio) is provided.

The sub-picture decoder has a predetermined bit (2 bits) which is run-length compressed according to a predetermined rule.
The unit pixel data (including emphasized pixels, pattern pixels, background pixels, etc.) is expanded to restore the original bitmap image.

The highlight processing unit (not shown) is an MP
According to X / Y coordinate values, color code, and highlight color (spotlight color) / contrast value indicating a rectangular area in which highlight information or spotlight information (for example, menu selection item) supplied from U500 is displayed. And the corresponding highlight processing (spotlight processing)
Is to do.

This highlighting process (spotlighting process) is performed on the visual user interface on the monitor section 6 by displaying a specific item (type of reproduced voice language, type of reproduced subtitle, etc.) displayed by the user. Button for selecting a specific item (or a button for selecting a specific item such as sampling frequency of reproduced sound, number of quantization bits, number of reproduction channels, etc.) can be easily recognized.

When the color and contrast of each pixel of the decoded sub-picture data is changed according to the highlight information (spotlight information), the changed sub-picture data is subjected to image composition in the video processor unit 640. Section (not shown)
Is supplied to. The decoded image data and the sub-picture data after the highlight processing (spotlight processing) are combined in this image combining section, and the combined image is displayed on the monitor section 6.

The RAM 52 described above is a sub-picture menu,
It includes a menu table that stores start addresses for audio menus, angle menus, chapter (program) menus, and the like. The highlighting process (spotlighting process) is used to emphasize a specific portion of these menus.

The audio decoder section 60 decodes the audio data in the audio pack transferred from the system processor section 54 to generate monaural, 2-channel stereo or multi-channel stereo audio data. When the audio data in the audio pack is compression-encoded data (MPEG, AC-3, etc.), the decoding process is also executed inside the audio decoder unit 60.

The video data (usually a moving image signal) decoded by the video decoder section 58 and the sub-picture decoder section 6
The sub-picture data (usually subtitles or menu bitmap data) decoded in 2 is processed by the video processor unit 6
40. In the video processor unit 640, the video data and the sub video data are mixed at a predetermined ratio, and the final analog video signal (composite video signal, separate S signal, or component signal Y
/ Cr / Cb) and output to the monitor unit 6.

When the video data decoded by the video decoder unit 58 is the main part of the movie on the DVD video disc 10, the sub-picture data is usually subtitles in the language selected by the user, and the main movie with subtitles is monitored. It will be performed in Part 6.

When the video data decoded by the video decoder unit 58 is the menu portion of a movie, the sub-video data is usually the characters that make up the menu and the user selection button (which is appropriately highlighted). in this case,
Menu background (still image or video) depending on video data
Is displayed on the monitor unit 6, and a button whose display changes according to the user selection operation by the sub-picture data is displayed so as to overlap the background image.

On the other hand, when the video data decoded by the video decoder unit 58 is a still picture of the DVD audio disc 10, the sub-picture data is, for example, an explanatory text in the language selected by the user, and in that case, the text is included. The still image is displayed on the monitor unit 6.

The video processor section 640 includes an OSD section for generating display data for the on-screen display. A user operation from the remote controller 5 or the like is processed by the MPU 500, and the processing result is the MPU 5
00 to the OSD section of the video processor section 640. The OSD section generates image data corresponding to the processing result from the MPU 500 and sends it to the monitor section 6 in an analog video signal format.

In other words, the video processor unit 6
It can be said that 40 is a portion for converting the digital signals output from the video decoder section 58 and the sub-picture decoder section 62 into analog signals and multiplexing them.

A frame memory unit 642 is connected to the video processor unit 640. The frame memory unit 642 is used not only for multiplexing the image of the video data and the image of the sub video data but also for n-division (for example, 4-division) multi-screen display.

When a chapter search or the like is performed, the frame memory unit 642 fixes a part of the image from the video decoder unit 58 as a still picture, and monitors this still picture until the reproduction of the target chapter starts. It can be used when sending to.

Further, the frame memory unit 642 is
When the display corresponding to the user operation result is performed by the OSD, it can be used also when the OSD display is multiplexed with the video data.

The audio data decoded by the audio decoder unit 60 is transferred to the DAC / output circuit 644. The DAC / output circuit 644 converts the audio data (digital) from the audio decoder section 60 into a corresponding analog audio signal, amplifies it appropriately, and sends it to the speaker section 8L / 8R.

ATS_DM in the audio title set information management table ATSI_MAT described in FIG.
When multi-channel audio is downmixed into two channels based on the writing of _COEFT, the coefficient (parameter) of the downmix is from MPU500 to DAC.
-Sent to the output circuit 644. Then, the DAC / output circuit 644 mixes down the multi-channel audio data decoded by the audio decoder unit 60 into two channels based on the received coefficient, and outputs a two-channel analog audio signal.

The video processor unit 640, the frame memory unit 642 and the DAC / output circuit 644 are D / A
The conversion and reproduction processing unit 64 is configured.

The system processor unit 54, the video decoder unit 58, the audio decoder unit 60 and the sub-picture decoder unit 62 respectively receive a system time clock (STC) for knowing the operation timing and a command / information from the system MPU 500. Includes temporary storage registers.

FIG. 30 shows an example of the front panel of the reproducing apparatus shown in FIG. The front panel is provided with a fluorescent display section (FL display) 4B corresponding to the panel display section 4B in FIG.

AM is displayed on the FL display 4B of FIG.
GI Audio Text Data Manager ATXTD
According to T_MG, the album name and / or the group name are displayed in characters. In the example of FIG. 9, "Beethoven Works Vol. 1" is displayed as the album name,
As the group name, for example, "Symphony No. 1" is displayed.

Further, a title number (in the case of DVD video) or a group number (in the case of DVD audio), a track number, and an index number are displayed on the left side numerical display portion of the FL display 4B.

When the optical disc 10 set in the disc tray of FIG. 30 is an AV disc (see FIG. 20)
In the character display portion on the right side and slightly in the center of the FL display 4B, the "AV disc" portion is conspicuously displayed, as shown in the figure. When the set disc is an A disc (a disc having AOTT_SRP in FIG. 22), the "A disc" portion is conspicuously displayed on the right character display portion of the FL display 4B. When the set disc is a VTS-only video disc that does not have ATS (a disc that does not have an ATS directory in FIG. 12), the "video disc" portion is conspicuously displayed on the right character display portion of the FL display 4B. It

Further, the sampling frequency and the number of quantization bits of the audio content to be reproduced are displayed on the right-side numeral display portion of the FL display 4B. This display is AOTT_AOB_ATR in the audio title set information management table ATSI_MAT.
Alternatively, it can be automatically executed based on the contents of AOTT_VOB_ART.

By the way, a DVD audio disc (A
The following two types can be considered as the DVD audio player for reproducing the disc or the AV disc) 10.

<C1> A player capable of reproducing images and sounds of the audio standard, that is, a player handling both AOTT and AVTT.

<C2> A player capable of reproducing only sound of audio standard, that is, a player handling only AOTT.

The <C1> type player only needs to read the search information (FIG. 20) described in the ATT_SRPT for content reproduction.

On the other hand, the <C2> type player is
In order to reproduce the content, only the search information (FIG. 22) described in AOTT_SRPT needs to be read.

In this way, the reproduction method for each type of player becomes simple. As a matter of course, for the <C2> type player, the ATT # 1 and # 9 parts in FIG.
Cannot play because there is no OTT.

The DVD audio player shown in FIG. 29 is the <C1> type player. The operation of this player is performed by the disc 10 having the data structure shown in FIG.
The case of reproducing is described.

When the disc 10 having the data structure shown in FIG. 14 is played back by a normal DVD video player, this video player uses the VTS under the root directory shown in FIG.
The VMG in the directory is read, and the title to be played back is determined based on that information. Then, according to the instruction of the reproduction unit defined in the VTS corresponding to the decided title, the object set VOBS # in FIG.
1 or all or part of VOBS # 2 is reproduced.

In the data structure of FIG. 14, the video player recognizes a portion other than VMG, VTS # 1 and VTS # 2 as another recording area 73 (FIGS. 3 and 4). Therefore, no matter what data is described in the portion recognized as the other recording area 73, it does not affect the operation when the video player reproduces VOBS # 1 and VOBS # 2. In this case, the object existing in the other recording area 73 cannot be reproduced by the video player.

On the other hand, when the disc 10 having the data structure of FIG. 14 is reproduced by the DVD audio player of FIG. 29, this audio player reads the AMG in the ATS directory under the root directory of FIG. Play content based on. AMG
In the title designation by, the playback unit defined in the ATS recorded in the DVD audio zone 71 (FIG. 3) is defined, and also in the VTS recorded in the DVD video zone 72 (FIG. 4). The specified playback unit can also be designated.

The playback unit defined in the ATS is D
In addition to designating the reproduction path of the object (AOBS # 1 or AOBS # 2) recorded in the VD audio zone 71, reproduction of the audio data recorded in the object (VOBS # 1) of the DVD video zone 72 is performed. It is also possible to specify the route.

VOBS # marked with diagonal lines in FIG.
1 exemplifies a part of a DVD video shared from the DVD audio side. Here, the arrow (a) indicates the case where the playback unit in the video zone 72 is referenced,
The arrow (a) indicates the case where the audio unit of the object (VOBS # 1) in the video zone 72 is referenced from the reproduction unit in the audio zone 71.

Object of video zone 72 (VOB
When the audio part of S # 1) is referred to by the playback unit of the audio zone 71, this common reference part (the part shared by the DVD audio and the DVD video) is defined by the playback unit definition information (ATSI). It is also possible to make a definition different from each unit (cell, program, program chain) defined by the definition information (VTSI) of the reproduction unit in the zone 72. This is because the reproduction method as a video player and the reproduction method as an audio player may be different even for the same object (FIG. 5).
reference).

The shared portion is used with the video object unit VOBU as a unit. The reason is that, as shown in FIG. 8, the units in which the audio data stream and the other (video, sub-picture) data streams are packed and time-division multiplexed are
This is because it is VOBU.

As shown in FIG. 14, the audio zone 7
By arranging 1 physically ahead of the video zone 72, it is possible to limit all the addresses of the reproduction units designated by the respective management information to only the forward addressing. By doing so, the design and development of the audio player can be simplified.

The operation of the video player in the data structure shown in FIG. 16 is the same as that in the case shown in FIG.

The operation of the audio player in the data structure of FIG. 16 is almost the same as that of the case of FIG. The audio player jumps to the beginning of AMG to read the management information, and sets the object sets AOBS # 1 and AOBS # 2.
To play. Although AOBS # 1 is an object in the DVD video zone, AOBS # 1
The # 1 cell, program and program chain are redefined. AOBS # 1 is also used in units of VOBU.

In the above-described embodiment, the DVD audio data and / or the DVD audio data contained in the volume space 28 are recorded.
Alternatively, the case has been described where the DVD video data is recorded on the optical disc 10. However, the data structure of the present invention (FIGS. 3 to 28) is not limited to being recorded on the optical disc 10. For example, a bit stream containing data having the structures shown in FIGS. 3 and 12 may be digitally broadcast or digitally communicated. (In this case, a radio wave or a communication line functions as a medium. Further, a communication terminal such as a DVD broadcast receiver or a personal computer functions as a DVD audio player.)

[0291]

As described above, according to the present invention, the DV video standard that was put into practical use in advance can be recorded in a DV format without any modification.
The data structure of the D audio standard can be realized in a form similar to the structure of the video standard. At that time, the audio volume can coexist in the same volume space by sharing the object of the video volume. DVD disc created with this data structure (A disc or A disc
V-discs) can play the appropriate objects in the video and audio players respectively.

Further, since the data structure of the present invention has a characteristic that a part of it can be shared without contradicting the preceding DVD video, the DVD video and the DVD audio work together to expand the market organization structure (infrastructure). It has the merit of being able to do it. This also has the by-product benefit of lowering the manufacturing cost of playback devices and media and other related products.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating the structure of an optical disc that can be used as a recording medium for DVD audio.

FIG. 2 is a view for explaining a correspondence relationship between a data recording area of the optical disc of FIG. 1 and a recording track of data recorded therein.

FIG. 3 is a diagram illustrating a hierarchical structure of information recorded in a DVD audio zone among various information recorded on the optical disc of FIG.

4 is a diagram illustrating a hierarchical structure of information recorded in a DVD video zone among various information recorded on the optical disc of FIG.

5 shows program chain information (ATS_PGCI) of the DVD audio zone of FIG. 3 and program chain information (VTS_PGC of the DVD video zone of FIG. 4).
I) Video information (VT) commonly accessed from both
FIG. 6 is a diagram illustrating an example of S_C # 2).

FIG. 6 shows the recorded contents of the DVD audio zone of FIG. 3 (A
The figure explaining an example of the data structure of (OTT_AOBS).

FIG. 7 shows the recorded contents of the DVD audio zone of FIG. 3 (A
The figure explaining the other example of the data structure of (OTT_AOBS).

FIG. 8 shows the recorded contents of the DVD video zone of FIG. 4 (VTS
The figure explaining an example of the data structure of (TT_VOBS).

9 is a diagram illustrating an example of a data structure which is recorded content of user-accessible DVD audio and is recorded on one side of the optical disc of FIG. 1. FIG.

10 is a diagram illustrating information recorded on the optical disc of FIG.
The figure explaining an example of the directory structure of the audio and the DVD video data file.

FIG. 11 is information (DVD which is recorded on the optical disc of FIG.
The figure explaining the other example of the directory structure of the audio and the DVD video data file.

12 is a diagram for explaining a case of accessing a file in a directory on the video content side from a directory on the audio content side in the directory structure of FIG.

13 is a diagram illustrating a case where a file in a directory on the audio content side is linked to a file in a directory on the video content side in the directory structure of FIG.

FIG. 14 shows the file access of FIG. 12 in FIG. 3 and FIG.
FIG. 6 is a diagram for explaining an example of how this is performed in the volume space of FIG.

FIG. 15 shows the file access of FIG.
FIG. 6 is a diagram for explaining another example of how this is performed in the volume space of FIG.

16 is a schematic diagram of the file access of FIG.
FIG. 6 is a diagram for explaining still another example of how this is performed in the volume space of FIG.

17 is a diagram for explaining the recorded contents of audio manager information (AMGI) in the DVD audio zone of FIG.

FIG. 18 is an audio manager information (AMG of FIG.
FIG. 6 is a diagram for explaining the recorded contents of an audio manager information management table (AMGI_MAT) included in I).

FIG. 19 is an audio manager information (AMG of FIG.
The figure explaining the content of the search pointer table (ATT_SRPT) of the audio title contained in I).

20 is a diagram illustrating the contents of an audio title search pointer (ATT_SRP) included in the audio title search pointer table (ATT_SRPT) of FIG. 19;

FIG. 21 is a diagram showing the audio manager information (AMG) of FIG.
The figure explaining the content of the search pointer table (AOTT_SRPT) of the audio only title contained in I).

22 is an audio-only title search pointer (AO) included in the audio-only title search pointer table (AOTT_SRPT) of FIG. 21;
The figure explaining the content of (TT_SRP).

FIG. 23 is an audio manager information (AMG of FIG.
Group (AOTT_GR) of audio-only titles accessed by the audio-only title search pointer (AOTT_SRP) in I) and audio title accessed by the audio-title search pointer (ATT_SRP) in this audio manager information (AMGI) Group (ATT_GR)
FIG.

FIG. 24 is a view for explaining the recorded contents of an audio title set (ATS) in the DVD audio zone of FIG.

FIG. 25 is a diagram showing the audio title set information (A
The figure explaining the recording content of the audio title set information management table (ATSI_MAT) contained in (TSI).

FIG. 26 is a diagram showing audio title set information (A
The figure explaining the content of the audio title set program chain information table (ATS_PGCIT) contained in TSI).

FIG. 27 is a view for explaining the contents of audio title set program information (ATS_PGI) in FIG. 26.

28 is a diagram illustrating the content of audio title set cell playback information (ATS_C_PBI) in FIG. 26.

29 is a block diagram showing an example of an apparatus for reproducing the recorded information of the audio zone of FIG. 3 or the recorded information of the video zone of FIG. 4 from the optical disc of FIG.

FIG. 30 is a diagram showing an example of a front panel of the playback device shown in FIG. 29.

[Explanation of symbols]

4 ... Key input section; 4A ... Remote controller receiving section;
4B ... Panel display section (fluorescent tube display etc.); 5 ... Remote controller; 6 ... Monitor section; 8L, 8R ... Speakers; 10 ... Laminated optical disk (A disk or AV disk); 14 ... Transparent substrate (polycarbonate etc.) ;
17 ... Recording layer (reflection layer or translucent film); 19 ... Read-out surface; 20 ... Adhesive layer (UV curable resin etc.); 22 ... Center hole; 24 ... Clamp area; 25 ... Information area;
... Lead-out area; 27 ... Lead-in area; 28
Data recording area (volume space); 30 Disk drive unit; 50 ... Control unit; 500 ... Micro processing unit MPU (or central processing unit CPU); 502 ... Read only memory ROM (storage of control programs etc.); 52 ... Random access memory RAM (work memory of control unit 50); 5
3 ... Memory interface; 54 ... System processor section; 58 ... Video decoder section; 60 ... Audio decoder section; 62 ... Sub-picture decoder section; 64 ... Digital / analog conversion and reproduction processing section; 640 ... Video processor section (on-screen display 642 ... Frame memory section; 644 ... Digital / analog converter and output circuit; 70 ... Volume and file structure area; 71 ... DVD audio zone; 711 ... Audio manager AMG; 712 ... Audio title set ATS; 7110 ... Audio manager information file AMGI; 7111 ... Video object set file AMGM_VOB for audio manager menu
S; 7112 ... AMGI backup file AMG
I_BUP; 7120 ... Audio title set information file ATSI; 7121 ... Audio only title audio object set AOTT_AO
BS; 7123 ... ATSI backup file AT
SI_BUP; 72 ... DVD video zone; 73 ... Other recording area.

[Procedure amendment]

[Submission date] September 27, 2002 (2002.9.2)
7)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

[0018]

DISCLOSURE OF THE INVENTION Digital according to the present invention
The information recording medium has a lead-in area on the center side.
Volume containing audio and video zones around
With a play space and a lead-out
An information recording medium having a rear, the audio zone
Is the audio management information and one or more audio
Ittle set, including audio title set
Is audio title set information as management information
And, as recorded contents corresponding to one or more programs,
Audio of audio data of multi-channel
Audio title set, including a project set
Information is a management information table and a collection of the programs.
Including program chain information for managing
The information table is the multi-channel audio data.
Shows the coefficient when mixing down to 2 channel output
It is configured to include one or more mixdown coefficient tables,
The program chain information manages the program
Including one or more program information
The information includes content information that describes the content of the program.
The content information is the mixdown coefficient table.
Of the table number is included. This
Now, in the audio zone, user accessible
The recorded content is an album and 1 or more that compose this album.
The group above and one or more tigers that make up this group
And one or more indexes that make up this track
It is composed of and.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0037

[Correction method] Change

[Correction content]

The reproducing apparatus according to the present invention has the above-described structure.
It reproduces recorded information from a digital information recording medium,
Play the audio title set information to play
The Mic included in the audio title set information
Down coefficient table and hand to retrieve the content information
Equipped with steps. This device is used to retrieve the content information
Based on the description indicating the table number contained in
2 channels of the multi-channel audio data
The mixer that indicates the coefficient when mixing down to force
Unmodulation coefficient table is specified, and the specified mixer
2 channel playback based on the weight coefficient table
Configured as

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0039

[Correction method] Change

[Correction content]

The recording method according to the present invention has the above-mentioned configuration.
Information is recorded on a digital information recording medium.
Record Dio title set in the audio zone
In the recorded audio title set,
The management information table including the mixdown coefficient table
Bullet is recorded and a description indicating the table number is given.
Is configured to record the content information including .

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0040

[Correction method] Change

[Correction content]

The reproducing method according to the present invention has the above-described structure.
It reproduces recorded information from a digital information recording medium,
Play the audio title set information to play
The Mic included in the audio title set information
Take out the down coefficient table and the content information,
The table number included in the extracted content information
Based on the description of
When mixing down audio data to 2-channel output
The mixdown coefficient table showing the
Based on the determined mixdown coefficient table,
It is configured to perform 2-channel playback .

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G11B 20/12 G11B 20/12 103 103 // G11B 7/24 541 7/24 541Z (72) Inventor Wealth Shigeru Tokoro 3-3-9 Shimbashi, Minato-ku, Tokyo, Toshiba Abu E. Co., Ltd. (72) Inventor Hideki Mimura 70 Yanagimachi, Saiwai-ku, Kawasaki-shi, Kanagawa Toshiba Yanagimachi F-term (reference) 5D029 RA44 RA50 5D044 AB05 AB07 DE11 DE17 DE48 FG18 FG21 5D090 BB10 CC04 CC14 FF24 GG16 GG36 5D110 AA19 BB06 DA03 DA11 DA12 DB02 DE01 EA01 EA07

Claims (4)

[Claims] 1. A method for recording first and second contents for different purposes in a plurality of independent areas, wherein the first and second contents manage the reproduction of the respective contents. A digital information recording medium having a block, wherein the first management block has first information for managing access to the first content and the second content. 2. An audio management block for managing audio content and reproduction thereof, and a video management block for managing video content and reproduction thereof,
In the case where the audio management block reproduces the audio content or the video content from a digital information medium containing audio management information for managing access to the audio content and the video content, the content of the audio management information is reproduced from the digital information medium. Management information retrieval means for retrieving; audio content retrieval means for retrieving the content of the audio content based on the content of the audio management information; video content retrieval for retrieving the content of the video content based on other content of the audio management information A digital information reproducing apparatus comprising: 3. An information recording medium having an information recording medium having a volume space including an audio zone and a video zone arranged after the audio zone, wherein audio management information and audio contents are recorded in the audio zone, An information recording method characterized by recording video management information and video contents in a video zone. 4. An information recording medium in which an audio zone in which audio management information and audio contents are recorded and a video zone in which video management information and video contents are recorded is reproduced, wherein the audio management An information reproducing method comprising: accessing the audio content or the video content based on information to reproduce the content, and accessing the video content based on the video management information to reproduce the content.