JP2002304856A - Digital audio information medium, information reproducing device for the medium, and information recording method onto the medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with DVD audio standards by a different method from a DVD video standards. SOLUTION: A volume space 28 of an optical disk includes an audio zone 71. The audio zone 71 includes a simple audio manager SMAG, an audio manager AMG, and audio title sets ATS# managed by the simple audio manager SMAG or the AMG in the order closer to the lead-in of the optical disk. Each ATS# includes linear PCM data or losslessly packed PCM data. The SAMG is configured with a table denoting contents of the linear PCM data or the packed PCM data recorded in the volume space 28 and the table includes a plurality of audio reproduction pointer tables SAPPT#. Then the volume space 28 is configured such that the SAMG placed closer to the lead-in above is read earlier than the AMG.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium on which audio information including still picture information is recorded, a method for reproducing such information, and a method for encoding such information.

In particular, the present invention relates to a data structure of still image information referred to during audio reproduction and a method of handling the data structure.

[0003]

2. Description of the Related Art A DVD video disk has been developed as an optical disk capable of recording video (moving images) with high image quality and high density and recording various information such as multi-angle video, sub-video, multi-lingual audio, and multi-channel audio. As a result, the spread and penetration into the general market has begun (DVD stands for Digital Versatile Disc).

[0004] This DVD video disc has uncompressed linear PCM (from 48 kHz sampling, 16 bit quantization to 96 kHz sampling, 24 bits) together with compressed multi-channel audio (AC-3, MPEG, etc.).
It is also a specification that can support. The linear PCM of this DVD video has a high sound quality specification of high sampling and high bit exceeding that of a conventional music CD (44.1 kHz sampling and 16 bit quantization).
Sampling 20-24 bit linear PCMs are well qualified as next generation digital audio discs (popularly referred to as super CDs or super audio discs).

[0005] However, the DVD video specification is rather created with priority on video rather than audio, and the DVD video has not only the sampling frequency and the number of quantization bits but also the number of recordable channels and the recordable time.
Expectations for audio priority over video audio specifications are also expected.

In response to the above expectations, a DVD audio specification has been created (although this DVD audio specification is not yet a prior art). In this DVD audio specification, 48K to 96K employed in DVD video are used.
As a matter of course, it is possible to support up to 192 kHz sampling and 24-bit linear PCM.

[0007] Packed PCM, in which audio information is packed (compressed) into a compact data size while maintaining the same high quality as linear PCM by performing lossless encoding / decoding, is also supported.
Further, there is a possibility that a specification capable of higher sound quality will be introduced in a future version upgrade of the DVD audio specification.

[0008] As described above, the DVD audio system can cope with future scale-up only because it is possible to record large-capacity digital video, even digital high-definition video.
This is because DVD audio has a part that can be commonly used with VD video.

[0009] Further, DVD audio has a feature that it can enjoy future technical, market, and economic advantages that can be used with the evolution of DVD video.

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

Further, if the market scale is widened due to the spread of DVD video, media (DVD-ROM disk, DVD-RA) are required between DVD video and DVD audio.
M / DVD-RW disk, DVD-R disk, etc., device parts (disk drive, optical pickup,
Common use of various ICs, various control programs and the like is progressing, and the cost reduction of DVD audio products having high sound quality and many features is accelerated. If DVD audio becomes widespread, DVD video will become available along with the evolution of DVD audio.
You will be able to enjoy the economic advantage.

[0012]

The DVD audio standard, which is an application format following the DVD video standard in the DVD standard group, has a high sound quality and a multi-channel specification exceeding the audio specification of DVD video, and also has various video expressions. Has features that can be supported.

For example, when one or a plurality of music pieces are successively reproduced, the music is reproduced in parallel with the music reproduction.
The DVD audio standard enables music expression with video, such as continuously outputting one still image (still image display) or displaying a plurality of still images while switching them sequentially (slide show). ing.

By the way, in the DVD video standard, the handling of video (moving image) is given the highest weight, and the ratio of audio data to the entire data transfer rate is small. For this reason, in DVD video, audio data and still image data are multiplexed and encoded according to the MPEG program stream standard and recorded on a disk. Therefore, even if the still image data is not read before the audio data at the time of reproduction, there is no fear that the transfer of the audio data is interrupted at the time of reading the still image data and the sound of the reproduced sound is interrupted.

However, in DVD audio, DV
In order to achieve high sound quality and multi-channel specifications that surpass D-video, the ratio of audio data to the entire data transfer rate is large. In particular, when the linear PCM specification of 192 kHz / 24 bits is adopted, it is necessary to increase the bit rate of the audio data to the utmost, and it is not possible to realize the multiplex transfer of the audio data and the still image data without causing the sound interruption. In the same way as the DVD video standard, it is extremely difficult.

The present invention has been made in view of the above circumstances, and has as its object to provide an audio information medium capable of coping with the DVD audio standard in a manner different from the DVD video standard, and an information reproducing apparatus using the medium. , And a method for recording information on this medium.

[0017]

An audio information medium (10) according to one embodiment of the present invention has a lead-in area (27) and a volume space (28) following the lead-in area. In this information medium (10), the volume space (28) is configured to include an audio zone (71), and the audio zone (71) is arranged in order from the side closer to the lead-in, from a simple audio manager (SAMG). , An audio manager (AMG), and an audio title set (ATS #) managed by the simple audio manager (SAMG) or the audio manager (AMG). The audio title set (ATS #) includes linear PCM data or lossless packed PCM data, and the audio title set (ATS #) includes the recorded content (AO #).
TT_AOBS), which includes program chain information (ATS_PGCI) for managing the reproduction order. The simple audio manager (SAMG) comprises a table indicating the contents (stereo or monaural, etc.) of linear PCM data or packed PCM data recorded in the volume space (28), and this table includes a plurality of audio reproduction pointer tables. (SAPPT # 1-
SAPPT # 8). Then, the simple audio manager (SAMG) arranged on the side near the lead-in is the audio manager (AMG).
It is configured to be read out earlier.

An information reproducing apparatus (simple audio player) according to an embodiment of the present invention uses an optical disk (10) as the information medium (10). The apparatus comprises: an optical pickup (102) for reading information recorded on the optical disk (10); a signal processing circuit (104, 106) for demodulating and error-correcting the information read by the optical pickup (102). A decoding circuit (154, etc.) for decoding information demodulated and error-corrected by the signal processing circuits (104, 106). And the optical pickup (102)
However, the information of the simple audio manager (SAMG) arranged on the side closer to the lead-in is read out before the information of the audio manager (AMG).

Further, in an information recording method according to an embodiment of the present invention, an optical disk (10) is used as the information medium (10). In this method, the audio title set (ATS #), the audio manager (AMG), and the simple audio manager (SAMG) are created (step ST100); information including the created audio title set (ATS #) is stored. Packing with a predetermined configuration (step ST10
4); the simple audio manager (SAM)
G), an audio manager (AMG), and the packed audio title set (ATS #)
Are recorded on the optical disc (10) in order from the side closer to the lead-in (step ST108).

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention will be described below with reference to the drawings. In order to avoid redundant description, common reference numerals are used for functionally common parts in a plurality of drawings.

FIG. 1 is a perspective view showing an example of the structure of an optical disk usable as a DVD audio recording medium.

As shown in FIG. 1, the optical disk 10
Is a pair of transparent substrates 1 each having a recording layer 17 provided thereon.
4 is bonded with an adhesive layer 20. Each substrate 14
Can be made of 0.6 mm thick polycarbonate, and the adhesive layer 20 can be made of an extremely thin (for example, 55 μm thick; see FIG. 3 or FIG. 4) ultraviolet curable resin. The pair of 0.6 mm substrates 14 are
Are bonded so that they are in contact with each other on the surface of the adhesive layer 20, whereby a large-capacity optical disk 10 having a thickness of 1.2 mm is obtained.

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

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

In the information area 25, a lead-out area 26 is provided on the outer peripheral side. Further, a 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.

The recording layer 17 of the information area 25 shown in FIG.
, A data recording track is formed continuously in a spiral shape. The continuous track is divided into a plurality of logical sectors (minimum recording units) having a fixed storage capacity as shown in FIG. 2, and data is recorded based on the logical sectors. The recording capacity of one logical sector is determined to be 2048 bytes (or 2 kbytes), which is the same as the data length of one pack.

In the data recording area 28, management data, still image data, audio data, sub-picture data, etc. are recorded for DVD audio, and management data, video data, sub-picture data, audio data, etc. are recorded for DVD video. Are recorded as appropriate.

The DVD audio data recording area includes:
Mainly, audio data is recorded as a pit string (a physical shape or phase state that causes an optical change to laser reflected light). In this DVD audio data recording area, sub-picture data for displaying lyrics text and displaying a menu used when the user selects various playback modes and / or still image data (still image data) are recorded. can do.

On the other hand, in the DVD video data recording area, main video data (video data), sub-video data (captions / menus, etc.) and audio data (speech / sound effect, etc.) are recorded in a similar pit row. You.

When the optical disk 10 is a DVD-RAM disk (or rewritable disk; DVD-RW disk), the recording layer 17 is a phase change recording material layer (eg, Ge2Sb2Te5) made of a mixture of zinc sulfide and silicon oxide (ZnS.SiO2). Can be constituted by a triple layer sandwiching the.

When the optical disk 10 shown in FIG. 1 is a single-sided reading type dual-layer RAM / ROM disk, the two recording layers 1
Reference numeral 7 denotes one phase change recording layer (the back side when viewed from the reading surface 19; for reading and writing) and one translucent reflective layer (the reading surface 1
9 to the front side; playback only).

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

Data writing to such a DVD-R disk is performed, for example, at a wavelength of 650 nm and an output of 6 to 12 m.
It can be performed using a semiconductor laser of about W.

The optical disc 10 has a single-sided reading type two-layer R
In the case of an OM disk, the two recording layers 17 can be composed of one metal reflection layer (the back side as viewed from the reading surface 19) and one translucent reflection layer (the front side as viewed from the reading surface 19).

Read-only DVD-ROM disk (DVD audio or DVD video disk) 1
In the case of 0, a pit row is previously formed on the substrate 14 by a stamper, and a reflection layer of metal or the like is formed on the surface of the substrate 14 on which the pit row is formed, and this reflection layer is used as the recording layer 17. . In such a DVD-ROM disc 10, usually, no groove is provided as a recording track, and a pit array formed on the surface of the substrate 14 functions as a track.

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

When the disc 10 is a DVD-ROM disc, various data are recorded at a constant linear velocity over the entire data recording area 28. On the other hand, when the disk 10 in FIG. 1 is a DVD-RAM disk, the data recording area 28 is divided into a plurality of ring-shaped (annular ring-shaped) recording areas (a plurality of recording zones). In this case, the angular velocity of the disk rotation differs for each recording zone, but the linear velocity or the angular velocity is constant in each zone.

When the optical disk 10 is a single-sided single-layer disk, the layer 17 disposed on the opposite side from the read surface 19 irradiated with the read laser beam RL does not need to be an information recording layer. In this case, the layer 17 may be a simple dummy layer DL as shown in FIG. In this case, as shown in FIG. 3, a label LB corresponding to the recorded content of the disk can be formed (printed) on the whole (or most) on the surface of the disk opposite to the read surface 19. .

Alternatively, instead of forming the label LB on the disk surface, as shown in FIG. 4, the recorded contents of the disk may be printed on the dummy / label layer DLB. In this case, since the upper surface of the label is covered with the transparent substrate 14 of FIG. 1, the printed surface of the label can be kept beautiful forever.

Although not shown, the dummy / label layer D
If the surface of the transparent substrate 14 directly above the LB is subjected to lenticular processing (a large number of minute lens groups having a cross-section having a concave shape are formed linearly or concentrically), a DVD audio with a visually more distinctive label is provided. You can make a disc.

The data recording area 28 formed on the optical disk 10 of FIG. 1 has a structure as shown in FIG. The logical format of this structure is defined in accordance with, for example, one of the standards ISO 9660 and Universal Disk Format (UDF) Bridge.

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

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

Note that, unlike the logical sector, redundant information such as error correction information is added to the physical sector. For this reason, the physical sector size does not exactly match the logical sector size.

As shown in FIG. 5, the 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 partitioned 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 being equivalent to one logical block.

The volume / file structure area 70 stores
It corresponds to a management area defined in SO9660 and UDF bridge. Based on the description of the area 70, the contents of a simple audio manager or audio manager described later are stored in a system memory inside a DVD audio player (not shown).

The DVD audio zone 71 includes a simple audio manager (SAMG) 710, an audio manager (AMG) 711, an audio still video set (ASVS) 713, and one or more audio title sets (ATS # m) 712. (Maximum number m of audio title sets is 99). However, ASVS 713 is optional data and DV
In some cases, the data is not recorded in the D audio zone 71.

The SAMG 710 is a table indicating the contents (stereo or monaural) of linear PCM data or lossless packed PCM data, and is composed of eight simple audio reproduction pointer tables (see FIG. 16).

The AMG 711 includes an audio manager information (AMGI) file 7110 and a video object set for audio manager menu (AMGM_
VOBS) file 7111 and audio manager information backup (AMGI_BUP) file 7112
It is composed of Note that AMGM_VOBS7111 is an optional file, and may not be present.

Each ATS 712 includes 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.

The AOTT_AOBS 7121 is composed of 1 to 9 files, but these are optional files and may not be present.

AOTT_AOBS7121 defines a group of one or more audio objects AOB (see FIG. 8). Each AOB defines a collection of one or more audio title set cells (ATS_C #). A set of one or more cells forms a program of the audio title set, and a set of one or more programs forms a program chain PGC of the audio title set.

If one PGC is compared to one opera,
The plurality of cells constituting the PGC can be interpreted to correspond to music or singing portions of various scenes in the opera. The contents of this PGC (or the contents of the cell)
It is determined by the software provider that produces the content recorded on the disc 10. That is, the provider uses the program chain information ATS_PGC in the ATS.
Using the cell reproduction information ATS_C_PBI written in I, the cells constituting the AOTT_AOBS 7121 can be reproduced as intended. (ATS_PGCI
ATS_C_PBI will be described later. ) A
AS placed after MG711 (before ATS712)
The VS 713 is a still image (audio still video: ASV for short) that can be reproduced together with audio data in the ATS 712 by a DVD audio player (video capable audio player: VCAP for short) capable of handling video. A logical unit indicating a set.

If there is an audio still video ASV, the ASVS 713 is recorded in the DVD audio zone 71 together with SAMG, AMG and ATS.

In a DVD audio-only player (audio-only player: AOP for short),
Even if it is recorded, the ASVS 713 is ignored and the audio still video ASV is not reproduced.

In the other recording area 73, information usable in the above-described video title set VTS 72 or other information unrelated to the video title set can be recorded. This area 73 is not essential, and may be deleted if not used.

In FIG. 5, the DVD audio zone 7
The audio still video set ASVS 713 including the still image information (still image information) is arranged on the address side (small logical sector number side) before the audio title set ATS 712 in 1.

The AT of the volume space 28
On the address side (larger logical sector number side) after the DVD audio zone 71 including S, the still image information (MP
A video title set VTS 722 including video information including an EG I picture is stored (see FIG. 6).

FIG. 6 is a diagram for explaining a hierarchical structure of information recorded in the DVD video zone 72 among various information recorded on the optical disk 10 of FIG. Hereinafter, the description of the parts already described in FIG.
2 will be described.

Based on the description of the volume / file structure area 70, the contents of the video manager 721 are stored in a system memory inside a DVD player (not shown).

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

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

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

Each video title set VTS 72 includes:
Video data (video pack) compressed according to the MPEG standard, audio data (audio pack) compressed or uncompressed according to a predetermined standard, and run-length compressed sub-picture data (sub-picture pack; one pixel is defined by a plurality of bits) Along with information for reproducing such data (navigation pack; including presentation control information and data search information).

VTSTT_VOBS7222 defines a collection of one or more video objects VOB.
Each VOB contains one or more video title set cells (VTs).
S_C #). A group of one or more cells forms a program of a video title set, and a group of one or more programs forms a program chain PGC of the video title set.

If one PGC is compared to one drama,
The plurality of cells constituting 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 a software provider that produces the contents recorded on the disc 10. That is, as in the case of ATS_PGCI described with reference to FIG. 5, the provider uses the cell playback information (not shown) written in the program chain information VTS_PGCI in the VTS to execute VTSTT_VOBS7222.
Can be reproduced as intended.

FIG. 7 shows the program chain information ATS_PGCI of the DVD audio zone of FIG. 5 and the program chain information VTS_PG of the DVD video zone of FIG.
From both PGCIs, specific video information (VTS_C #
2, VTS_C # 3 and VTS_C # 5) are commonly used (but different methods) to explain the case where they are accessed. In other words, FIG. 7 illustrates a case where the same video object VOB is referred to by a different method from the audio side playback unit and the video side playback unit.

That is, when performing video playback from the video title set side, the VOB cell VTS_C # 1 is determined by the cell playback information (not shown) in the VTS_PGCI.
To VTS_C # 6 are sequentially reproduced.

On the other hand, when video playback (or still playback) is performed from the audio title set side, the ATS
_PGCI according to the cell reproduction information (see FIG. 35).
OB cells VTS_C # 2, VTS_C # 3 and VT
S_C # 5 is selectively reproduced (VTS_C # is AT
S_C #).

In this case, ATS and VTS have the same cell data (VTS_C # 2, VTS
_C # 3 and VTS_C # 5), so that the limited capacity of the disk 10 can be effectively used.

FIG. 8 shows the DVD audio zone 7 of FIG.
1 shows an example of the data structure of the recorded content (AOTT_AOBS).

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
A collection of S_C # is defined. A program is constituted by a group of one or more cells ATS_C #, and a program chain PGC is constituted by a group of one or more programs. The PGC constitutes a logical unit indicating the whole or a part of the audio title.

In the example of FIG. 8, each audio cell ATS
_C # is an audio pack A with a size of 2048 bytes
It is composed of a set of PCKs. These packs are the minimum units when performing data transfer processing. The minimum unit for performing the logical processing is a cell unit, and the logical processing is performed in this cell unit.

In another example of FIG. 8, the audio cell ATS_
The C # is composed of an audio pack A_PCK including a real-time information pack RTI_PCK having real-time information RTI as appropriate.

As an option, a part of the audio packet (see FIG. 9A) constituting the audio pack shown in FIG. 8 is appropriately set to a sampling frequency of 192 kHz or more (for example, 384 kHz) and a quantization bit number of 16 bits or less. It is also possible to store audio data of only a super-high frequency component that has been compressed (lossless compression or lossy compression).

The sub-stream ID of the audio packet containing the data of the super high frequency component includes information indicating that the packet is audio data for the super high frequency band, its compression method, sampling frequency, number of quantization bits, and the like. Can be described.

If a general DVD audio player does not have a function of decoding the super-high frequency audio packet, the super high frequency audio packet is ignored by the player.

If the DVD audio player is a high-end model and has a function of decoding the audio packet for the ultra-high frequency band, the contents (compression method, sampling frequency, , Quantization bit number, etc.), and can decode the ultra-high frequency audio data.

The decoded ultra-high frequency audio data (for example, 384 kHz, 8-bit non-linear compressed audio) is synthesized with ordinary decoded DVD audio data (for example, 96 kHz, 24-bit linear PCM audio).

As a result, for example, audio data of 5 Hz to 40 kHz is reproduced as a 96-kHz, 24-bit linear PCM audio, and the linear PCM audio has a frequency of 40 kHz.
The super high frequency components of z to 160 kHz are superimposed and reproduced.

The super high frequency component of 40 kHz to 160 kHz cannot be heard by human ears as a single tone (single tone), but the envelope of the super high frequency component is 20 kHz.
When the following amplitude change component is included, it can be detected by human hearing (as a subtle nuance change or a feeling of air at the recording site).

FIG. 9A shows the configuration of the audio information pack A_PCK of FIG. 8, and FIG. 9B shows the configuration of the real-time information pack RTI_PCK of FIG.

In FIG. 9A, the pack header of the audio information pack stores information such as a pack start code, a system clock reference SCR, a marker bit, a maximum program rate (10.08 Mbps), and a stuffing length of the pack. Is done.

The packet header of the audio packet stores a prefix of a packet start code, a stream ID (private stream 1 indicating the total of the reproduction data buffer), a presentation time stamp (PTS), a marker bit, and the like.

The PTS indicating the reproduction timing of the frame is described in each audio packet including the first data of the audio frame.

Substream ID of audio packet
Stores, for example, a code (1010 0000b) indicating a linear PCM audio stream.

UPC_EAN_I of audio packet
SRC contains Universal Product Code (Univer
sal Product Code (UPC) / European Article Number (EAN) International Standard Recording Cod
e; ISRC) information is stored.

In the private header length of the audio packet, the number of bytes of the private header is described.

The first access unit pointer of the audio packet describes the address of the first byte of the first access unit. Here, the first access unit has the first byte of the audio frame and is specified by the presentation time stamp of the audio packet.

The audio data information portion of the audio packet includes an audio emphasis flag, a downmix mode, a downmix code validity, a downmix code, an equalize word length 1, an equalize word length 2, an audio sampling frequency 1, and an audio sampling frequency. 2. Information such as multi-channel format, bit shift of channel group 2, channel assignment, dynamic range control, and the like are described.

A predetermined 8-bit value (0000 0000b) is written in the stuffing byte of the audio packet to adjust the pack length (the stuffing byte is 0 to 7 bytes).

In the audio data portion of the audio packet, 44.1 kHz to 192 kHz / 16 to 24 bits of linear PCM data (or losslessly packed P
CM data) is stored. An audio stream for each audio data is composed of a group of one or more audio packs, and is recorded in AOTT_AOB of FIG.

In FIG. 9B, the pack header of the real-time information pack stores information having the same contents as the pack header of the audio pack.

The packet header of the real-time information packet stores information having the same configuration as the packet header of the audio packet.

A code (0100 1000b) indicating a real-time information stream is stored in the sub-stream ID of the real-time information packet.

The private header length of the real-time information packet describes the number of bytes of the private header.

RTI information I of real-time information packet
D describes the type of real-time information included in this packet.

A predetermined 8-bit value (0000 0000b) is written in the stuffing byte of the real-time information packet to adjust the pack length (the stuffing byte is 0 to 7 bytes).

[0099] On a DVD audio disc, certain information that can be reproduced in real time can be recorded together with audio contents as necessary.

Specifically, in the data portion of the real-time information packet in FIG. 9B, various data that can be reproduced in synchronization with audio data can be stored. Typical examples of real-time data that is reproduced in synchronization with audio data include real-time text data such as a message to a user and lyrics of a song. In addition, various real-time information for different uses is shown in AOTT_AO in FIG.
B can be recorded.

Hereinafter, as typical examples of the real-time information,
The contents of the real-time text data will be briefly described.

A DVD audio disc has one or more audio text data language units (ATXTDT_L).
When U) is provided, text data used for lyrics, explanations to the user, and the like can be recorded as real-time text data (RTXTDT).

Real-time text data RTXTDT
Is displayed on the display screen as a “page”.
One page can be composed of 4 lines of 30 characters per line (for 1-byte characters) or 2 lines of 15 characters per line (for 2-byte characters). When the player has a function of playing RTXTDT, the player writes the contents of RTXTDT in page units.
It is displayed on a display screen (a display panel of an audio player not shown or a TV monitor screen connected to the player).

In DVD audio, up to eight languages can be used as real-time text.

FIG. 10 shows an example of the data structure recorded on the user-accessible DVD audio zone 71, which is recorded on one side (one or two layers) of the optical disk of FIG.

In the case of DVD audio, the management structure of recorded contents from the software production side includes albums,
It has a hierarchical structure consisting of groups, tracks and indexes.

Here, the album, group, track and index can all be accessed by the user of the DVD audio player, but the group and track can be accessed only by the user. On the other hand, the head group of the album / the head index of the head track can be stored in the DVD even if the user does nothing.
The audio player itself can access it automatically.

The album is a DVD audio disk 10
For example, "the first volume of Beethoven's work collection" can be assigned to this album. In this case, this album can be composed of, for example, the first symphony group # 1 to the ninth symphony group # 9.

Each group (for example, 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 constituted by indexes # 1 to #i obtained by appropriately dividing the content into i.

Each group corresponds to a group of one or more audio titles ATT #. These ATTs are:
It is used only as an internal logical unit indicating recorded contents.

A DV produced in a hierarchical structure as shown in FIG.
When the user plays back the D audio disc 10, the user sets the disc 10 on a DVD audio player (not shown), and then operates a remote controller (not shown) to set the group # 1 and / or the track # 1. 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 first symphony. When the user further designates a specific index from the remote controller, the designated index portion is searched and reproduced from that portion. (The default playback of the first index portion of the first track of the first group of the album is performed even if the user does not specify anything.)
In the case of playing a video disc, the user can recognize the title (such as a specific movie title), but in the case of a DVD audio disc, the "title" is invisible to the user. What the user sees is the “album” in FIG.
, “Group”, “track”, and “index”.

FIG. 11 shows a directory structure of information (DVD audio and DVD video data files) recorded on the optical disk of FIG. This figure is DVD
It is an example of a file / directory structure defined by a file standard.

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

Various video files (VMGI, VMGI) are stored in the subdirectory of the video title set VTS.
GM, VTSI, VTSM, VTS, etc. files; FIG.
References) are arranged so that each file is managed in an orderly manner.

In the subdirectory of the audio title set ATS, various audio files (files such as AMGI, ATSI, and ATS; see FIG. 5) are arranged, and each file is managed in an orderly manner. I have.

The user can enter a specific file (specific VTS
Or, a specific ATS can be accessed by designating the path from the root directory to the file.

[0118] DV made according to the DVD video standard
When playing back a DVD video disc made according to the DVD video standard, the D video player first reads management information (VMG) in a video title set VTS directory under a root directory, and uses the information to read video content. To play. However, VMG
Can reproduce only video contents (VTS) recorded in the VTS directory.

On the other hand, a DVD audio player (or DVD video / DVD audio compatible player) made according to the DVD audio standard is a DVD audio player.
When playing a DVD audio disc made in accordance with the audio standard, first, management information (AMG) in an audio title set ATS directory under a root directory is read, and the audio content is played based on the information. In this case, the AMG can reproduce not only audio contents (ATS) recorded in the ATS directory, but also video contents (VTS) in the VTS directory (the mechanism will be described later).

FIG. 12 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. 11, 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. 12, an ATS directory (child directory) is arranged in a hierarchy below the root directory (parent directory), and a VTS directory (grandchild directory) is arranged in a hierarchy below the ATS directory.

FIG. 13 is a view for explaining a case where a file in a directory on the video content side is accessed from a directory on the audio content side in the directory structure of FIG.

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

The video title set directory (VT)
The S directory) is a directory for handling files of video contents recorded on the disc 10, and includes a file of the video manager VMG and one or more files of the video title set VTS (logical units of video contents) (FIG. 6). reference).

The audio title set directory (ATS directory) is a directory for handling audio content files recorded on the disk 10, and includes audio manager AMG files and 1
The audio title set ATS file (the logical unit of the audio content) is included (see FIG. 5).

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

Although the specific contents will be described later, AGM includes audio manager information AMGI, and AMGI is a search pointer table ATT_S of the audio title.
ATT_SRPT includes a search pointer ATT_S for an audio only title (AOTT).
It includes a search pointer ATT_SRP for RP and audio / video (AVTT).

That is, the AMG of the ATS directory is
AT is determined by AOTT search pointer ATT_SRPT.
Audio title set ATS # in S directory
, ATS # 2,..., And the video title sets VTS # 1, VTS # in the VTS directory by the AVTT search pointer ATT_SRPT.
2, ... can be accessed. This allows a certain object (such as VTS # 1) to be shared by both video content and audio content.

FIG. 14 is a view for explaining a case where a file in the directory on the audio content side links to a file in the directory on the video content side in the directory structure of FIG. FIG.
It can also be considered as a third modification.

That is, in the example of FIG. 13, the audio manager AMG has a configuration that can 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. I have.

On the other hand, in the example of FIG. 14, information for linking to a certain audio title set (here ATS # 1) and a certain video title set (here VTS # 1) (address of a predetermined portion of VTS # 1) Is written). By doing this,
For example, audio data in VTS # 1 can be shared by video content and audio content.

FIG. 15 is a data structure diagram for explaining an example of how the file access of FIG. 13 is performed in the volume space of FIGS. 5 and 6. The data structure in FIG. 15 corresponds to the directory structure in FIG.

In FIG. 15, the portions shown with diagonal lines illustrate contents shared by video contents (or video volumes) and audio contents (or audio volumes).

The basic concept of the data structure in FIG. 15 is that a recording area for video contents (VMG + VTS) and a recording area for audio contents (AMG + AT)
S) are independently recorded in the volume space 28, and video content commonly used not only for video but also for audio can be managed from the AMG.

As a specific example, in FIG.
Can access a part (cell) of the video object set VOBS # 1 while the audio title set ATS # 1 managed by the AMG can access another part (cell) of the VOBS # 1. Is accessible. In this example, VTS
Part of the cells constituting the video object set VOBS # 1 of # 1 will be shared by the video content and the audio content.

In the data structure of FIG. 15, the DVD audio zone 71 is arranged in the smaller address (closer to the lead-in area 27 in FIG. 5), and the DVD video zone 72 is arranged in the larger address (lead-out in FIG. 5). (Closer to the area 26). In this case, AMG is A
When accessing the TS and the VTS, an address that always changes in the + direction may be used, and it is not necessary to handle an address in the-direction, which facilitates the construction of a reproduction system.

By the way, the DVD audio disc (A
The following two types of DVD audio players for reproducing the disc or AV disc 10 can be considered.

<1> A player that can reproduce only audio-standard sound, that is, a player that handles only AOTT (this is an audio-only player; AOP for short).

<2> A player capable of reproducing images and sounds of the audio standard, that is, a player that handles both AOTT and AVTT (this is a video-capable audio player; VCAP for short).

To cope with the fact that the data reading operation differs depending on the type of DVD audio player, SAMG, AMG, ASVS, and ATS in FIG. 5 are separate files.

Since the SAMG, AMG, ASVS, and ATS are separate files, the AOP player reads the data in the order of AMG → ATS (or SAMG → ATS) without accessing the ASVS. This AOP player uses AOT for content playback.
The search information (see FIG. 29) described in T_SRPT is read.

On the other hand, the above-mentioned VCAP player uses AMG →
Data is read in the order of ASVS → ATS. This VCA
The P player uses ATT_SR for content playback.
The search information (see FIG. 27) described in the PT is read.

In this way, the reproducing method for each type of player is simplified. As a matter of course, in the AOP player, ATT # 1 and ATT # 9 in FIG.
Playback is not possible because there is no TT.

Next, the operation of the VCAP player will be described for the case where the disc 10 having the data structure of FIG. 15 is reproduced.

When the disc 10 having the data structure shown in FIG. 15 is reproduced 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 reproduced is determined based on the information. Then, in accordance with the instruction of the playback unit defined in the VTS corresponding to the determined title, the object set VOBS # shown in FIG.
All or part of VOBS # 2 is reproduced.

In the data structure shown in FIG. 15, a portion other than the VMG, VTS # 1 and VTS # 2 is recognized by the video player as the other recording area 73 (FIGS. 5 and 6). For this reason, 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 shown in FIG.
The AP player uses the AT under the root directory in FIG.
The AMG in the S directory is read, and the content is reproduced based on the information.

In the title specification by AMG, D
A recorded in the VD audio zone 71 (FIG. 5)
Not only the playback unit defined in the TS but also the VT recorded in the DVD video zone 72 (FIG. 6)
The playback unit defined in S can also be specified.

The playback unit defined in the ATS is D
Not only does the playback path of the object (AOBS # 1 or AOBS # 2) recorded in the VD audio zone 71 be specified, but also the playback of audio data recorded in the object (eg, VOBS # 1) of the DVD video zone 72. It is also possible to specify a route.

VOBS # marked with oblique lines in FIG.
1 illustrates a part of a DVD video shared from the DVD audio side. Here, an arrow (a) indicates a case where a playback unit in the video zone 72 is referred to,
The arrow (a) indicates the case where the audio unit of the object (VOBS # 1) in the video zone 72 is referred to from the playback unit in the audio zone 71.

The object (VOB) of the video zone 72
When the audio portion of S # 1) is referred to by the playback unit of the audio zone 71, the common reference portion (portion shared between the DVD audio and the DVD video) is defined by the playback unit definition information (ATSI). It is also possible to define differently from each unit (cell, program, program chain) defined by the playback unit definition information (VTSI) in the zone 72. This is because, even for the same object, the reproduction method as a video player and the reproduction method as an audio player may be different (FIG. 7).
reference).

The shared portion is used in units of the video object unit VOBU. The reason for this is that the unit in which the audio data stream and the other (video, sub-picture) data streams are packed and time-division multiplexed is a VOBU.

[0154] As shown in FIG.
By arranging 1 physically ahead of the video zone 72, all the addresses of the playback units specified from the respective management information can be limited to only the forward address specification. That is, a desired shared object can be accessed only by specifying an address in the + direction without remapping addresses. By doing so, the design and development of the audio player can be simplified.

In the audio zone 71,
By arranging the audio still video set ASVS including all still image information physically ahead of the group of audio title sets ATS, the still image information which takes a long time to read is placed before the audio information (the one with the lower address). (In order). Then, the reading of the audio information is not interrupted during the reproduction of the still image (still image), and there is no fear of the sound interruption.

FIG. 15 shows an example of a preferable data structure "AMG can access ATS and VTS" and a preferable data structure "High-quality DVD audio reproduction can be performed simultaneously with reproduction of a still image without fear of sound interruption". Was.

When a part (a part of the I picture) in the VTS is used as a still picture instead of using an ASVS still picture, the still picture data in the VTS is buffered prior to the ATS audio data reproduction. You should keep it. Once buffered, audio data can be reproduced without interruption while reproducing still images in the buffer.

FIG. 16 shows a simple audio manager (SAM) provided in the DVD audio zone of FIG.
FIG. 129 is a diagram for explaining the contents of G) 710.

The simple audio manager SAMG is a “table of contents” indicating the recorded contents of stereo or monaural encoded by linear PCM or packed PCM.

As shown in FIG. 16, the simple audio manager SAMG 710 includes eight simple audio reproduction pointer tables SAPPT # 1 to SAPPT #.
8. Each simple audio reproduction pointer table SAPPT includes simple audio reproduction pointer table information SAPPTI and n simple audio reproduction pointers SAPP # 1 to SAPP # n (n is 31).
4 or less) and a stuffing area including hexadecimal "00h" data.

[0161] Simple audio playback pointer SAPP
Is information for one track handled by the simple audio player. The simple audio player is a player that performs linear PCM or packed PCM audio reproduction without using an audio title set program chain (ATS_PGC).

Simple audio playback pointer SAPP
Is the group number of the audio-only title (Fig. 3
(AOTT_GR number of 0).

SAPP belonging to the same AOTT_GR number
Are described in the same ascending order as the track numbers (see FIG. 10).

Each simple audio playback pointer SAP
P has a set of a start address and an end address of the corresponding track. These addresses are described by logical sector numbers (LSN) with the start of the volume space 28 in FIG. 16 being zero.

FIG. 17 shows an audio still video set (ASV) provided in the DVD audio zone of FIG.
It is a figure explaining contents of S) 713.

The audio still video set ASVS is a logical unit indicating a group of still images (audio still video ASV) reproduced together with audio data by the above-described VCAP player.

As shown in FIG. 17, when there is an audio still video ASV, the ASVS 713
10, together with AMG 711 and one or more ATSs 712, are recorded in the DVD audio zone 71.

Audio Still Video Set ASVS7
13 is audio still video set information ASVSI
And audio still video object set ASV
OBS and ASVSI backup ASVSI_BU
P.

Audio Still Video Set Information ASV
The SI includes navigation data necessary for reproducing the audio still video ASV. The navigation data includes an attribute of each ASV included in the ASVS, an address map, and the like.

More specifically, the audio still video set information ASVSI includes audio still video unit information ASVUI including the above attributes, an audio still video address map ASV_ADMAP, and a stuffing area including hexadecimal “00h”. You.

Audio Still Video Address Map A
SV_ADMAP describes the start address of each ASV in ASVOBS in the same ascending order as the absolute number of the ASV. The absolute number of ASV in ASVOBS is 160
4 or less.

Here, each ASV in one ASVOBS
OB is given two types of numbers. One is an absolute ASV number ABS_ASVN, in which all the ASVOBs in the ASVOBS are serially numbered (consecutively numbered) beyond the ASVU in the arrangement order. The other is ASV number ASV
N, and for each ASVU in ASVOBS, the ASVO
The numbers are serialized in the arrangement order of B.

The number #m of the ASVU can take any one of 1 to 99 in the same ascending order as the physical arrangement of the leading ASV in each ASVU. ASVU number #m is ASVOB
A serial number is assigned to all S.

The absolute number ABS_ASVN of the ASV is A
In the same ascending order as the physical arrangement of each ASV in SVOBS,
1604 can be adopted.

The ASV number #n (ASVN) is assigned to each AS
Relative number assigned to VU, absolute number ABS
Any of 1 to 99 can be taken in the same ascending order as _ASVN. The ASV number #n is a serial number within each ASVU, but does not become a serial number across a plurality of ASVUs.

In FIG. 17, audio information (AT
The data body of the still image that can be simultaneously reproduced during the reproduction of S) is the audio still video object set ASV.
It is recorded centrally (collectively) in OBS.

In the ASVS 713 of FIG.
AS including navigation data (control information) of ASV
The VSI and the ASVOBS including the data body of the ASV are separate files, and the ASVSI is located at an address before the ASVOBS. The reason for this arrangement is that the DVD audio player can read the ASVOSI first and read the ASVOBS based on the read information.

FIG. 18A is a view for explaining the recorded contents of the audio still video unit information ASVUI in FIG.

Audio Still Video Unit Information AS
The relative byte positions 0 to 11 of the VUI contain the international standard I
“DVD audio ASVS” for specifying an ASVSI file is described using the character set code of SO646.

In the relative byte positions 12 to 13 of the ASVUI, the number (1 to 99) of ASVUs included in the ASVS is described.

In the relative byte positions 16 to 19 of the ASVUI, the start address of the ASVOBS is described by the relative logical block number from the first logical block of the ASVS.

In the relative byte positions 20 to 23 of the ASVUI, the end address of the last ASV in the ASVOBS is described by the relative logical block number from the first logical block of the ASVOBS in the ASVS.

In the relative byte positions 24-31 of the ASVUI, attributes of a plurality of ASVs in the ASVU recorded in the ASVS are described. Here, four attributes ASVU_AT
Areas for R # 0 to # 3 are continuously provided.

Each attribute ASVU_ART includes a video compression mode (such as MPEG1 or MPEG2), a TV system (such as NTSC or PAL), an aspect ratio (such as 4: 3 or 16: 9), and a display mode (aspect ratio 4: 3). 3 to use a pan scan or letterbox when displaying a still image on the monitor of the monitor 3), the original image resolution (35
2x240 dots to 720x480 or 352x2
88 dots to 720 × 576) and button presence.

Here, "button existence" describes whether or not a sub-picture button corresponding to a still image display mode exists in the ASVU ASV.

At the relative byte positions 32 to 95 of the ASVUI, 16 sets of “luminance signal Y + two color difference signals Cr and Cb” (simply 16 color palettes) used for all sub-pictures in ASVOBS are provided. be written. Here, areas for four attributes ASVU_ATR # 0 to # 3 are provided continuously.

ASVUI relative byte positions 96-887
Describes general information ASVU_GI # n for n (n is 1 to 99) ASVUs.

[0188] Each ASVU general information ASVU_GI includes:
As shown in FIG. 18B, ASV_Ns describing the number of audio still videos included in the ASVU;
A that describes the attribute of each ASV included in the ASVU with an ASVU_ATR number defined in the ASVUI
SVU_ATRN; first absolute ASV of the ASVU
A number First ABS_ASVN and a description in which the start address of the first ASV in the ASVU (search pointer information of the ASVU) is described by a relative block number from the first logical block of the ASVOBS in the ASVS.

Next, the audio still video shown in FIG.
The contents of the object set (ASVOBS) will be described.

The audio still video object ASVOB constituting the ASVOBS is reproduction data of one audio still video ASV, and includes highlight information data for a button (for user selection operation or the like) and sub-picture data for a button. , Still image data.

[0191] One ASVOB contains only one still picture data. This still image data is used to display a still image (still image).

One ASVOB can include one piece of highlight information. This highlight information is used to manage buttons on a still image.

One ASVOB can include one or more (up to three) sub-picture data corresponding to different display modes of a still picture.

The audio still video object ASVOB constituting ASVOBS is a kind of a program stream described in the MPEG2 standard (ISO / IEC13818-1) and has the following features: * The value of the system clock reference SCR is , Zero in the first pack of each ASVOB; * ASVOB is terminated by the program end code.

The audio still video object set ASVOBS is composed of one or more audio still video units ASVU # 1, # 2, # 3,.

Each ASVU has one or more ASVOB #
1, # 2, # 3,... Are continuously recorded. Same AS
One or more ASVOBs defined in the VU are stored in the ASVU buffer in advance before the audio data is reproduced (described later with reference to FIGS. 38 to 42).

One or more audio still videos in the ASVU are reproduced at a predetermined timing during audio data reproduction and have the following features: * One or more ASVOBs in the same ASVU are physically continuous. * The attribute of each ASVOB in the same ASVU is the same; * The total size of each ASVOB in the same ASVU is 2
M bytes or less.

There are two types of ASVOB pack configurations, and an ASV composed of ASVOBs containing only still image data.
There is an OBS (FIG. 19A) and an ASVOBS (FIG. 19B) composed of an ASVOB that further includes highlight information and sub-picture information in addition to still image data.

That is, in FIG. 19A, an audio still video object set ASVOBS including only still picture data is composed of one or more audio still video units ASVU # 1, # 2, # 3,. Each ASVU has one or more ASVOBs # 1, # 2,
# 3,...

Each ASVOB starts with a highlight information pack HLI_PCK that does not include highlight information,
It is composed of a still image pack SPCT_PCK including still image information. The boundary (delimiter) of each of a plurality of continuously arranged ASVOBs is HLI_PCK whose data body is empty.
Can be specified by

As shown in FIG. 19B, an audio still video object set ASVO including highlight information data and sub-picture data in addition to still picture data
BS also has one or more audio still video units AS
VUs # 1, # 2, # 3,...
Is composed of one or more ASVOBs # 1, # 2, # 3,... Up to this point, there is no difference from the configuration of FIG.

However, each ASVOB is composed of a highlight information pack HLI_PCK containing highlight information, a sub-picture pack SP_PCK containing sub-picture information, and a still picture pack SPCT_PCK containing still picture information. The boundary (delimiter) of each of a plurality of continuously arranged ASVOBs can also be specified by HLI_PCK.

It can be said through FIGS. 19A and 19B that, for each ASVOB, HLI_PCK and SPCT_PCK always exist (are essential), but
This means that P_PCK is not required (arbitrary).

[0204] In other words, the elementary streams recorded in the ASVOB include one highlight information stream (for buttons), 0 to 3 sub-picture streams (for sub-pictures), and one video stream (for still pictures). Painting
(For still images).

[0205] These elementary streams are recorded in a pack format as shown in FIG.
It can be specified by a stream ID defined in a standard program stream. For example, stream ID =
By [1110 0000b], stream coding of a still image stream video can be designated.

It should be noted that the stream ID = [1011 11
01b] can specify private stream 1,
The private stream 2 can be specified by the stream ID = [1011 1111b].

[0207] Private stream 1 can further specify the following stream coding by sub-stream ID: [0010 00 ** b] = sub-picture stream (specify the type of sub-picture in ** part); [0100 1000b] = For real-time information stream in audio object [1000 0000b] = For Dolby digital audio stream in audio object [1000 1000b] = For DTS audio stream in audio object [1001 0000b] = For SDDS audio stream in audio object [ [1010 0000b] = for linear PCM audio stream in audio object [1010 0001b] = pack in audio object For PCM audio stream [1011 0000b~1011 1111b] = audio stream employing a special coding mode within audio object [Other] = Not used (reserved) In addition, the private stream 2 is sub-stream ID
Can further specify the following stream coding: [0000 0010b] = highlight information stream; [others] = unused (reserved) The following features are provided for the entire stream and each stream in the audio still video object ASVOB: * The total transfer rate of all streams is 10.08 Mb
sp or less; * Transfer rate of video stream for still image data is 9.
8 Mbsp or less, and the number of video streams is 1; * The display configuration of the still image data video stream in the ASVOB starts from the top field and ends with the bottom field, and the video stream is sequence end. * The transfer rate of the sub-picture stream is 3.36 Mbsp or less, and the number of sub-picture streams is 3 or less. * The presentation time stamp PTS that specifies the playback start timing of the sub-picture is the PTS of the still picture. Same as above.

Audio Still Video Object AS
Packs and packets in the VOB are configured based on the system part of the MPEG2 standard (ISO / IEC13818-1). The pack includes a pack header,
It consists of a system header (if necessary) and a packet of recorded contents.

FIG. 20 is a view for explaining the structure of the highlight information pack HLI_PCK of FIG. One HL
I_PCK includes a pack header, a system header, a packet header, a substream ID, highlight information, and a padding packet.

In the pack header, a pack start code, a system clock reference SCR, a marker bit, a program maximum rate (10.08 Mbps), a pack stuffing length, and the like are written.

The system header includes a system header start code, a header length, a marker bit, and a stream ID.
(For all video streams, for all sub-picture streams, and for highlight information streams).

The system header is included only in the first pack (ie, HLI_PCK) of each ASVOB.
This pack length is 2048 bytes (corresponding to one logical block)
And the data length in the pack is less than 2048 bytes. This data length is adjusted as follows: * If the adjusted data is 1 to 7 bytes, a stuffing byte (00h) is added to the packet header.
* If the adjusted data is 8 bytes or more, add a padding packet to the last packet in the pack.

Highlight information packet HLI_PKT
Is composed of a packet header, a substream ID (private header), and highlight information.

The packet header of the HLI_PKT includes a packet start code prefix, a stream I
D, Packetized Elementary Stream (PE
S) Including packet length and the like. The private header is a substream I that specifies the highlight information stream.
D.

The audio still video highlight information (ASV_HLI) is information for highlighting (conspicuous) a certain rectangular area in a sub-picture display area on a still image. With the ASV_HLI, the mixing ratio of the still image and the sub-image color (the contrast of the sub-image to the still image) can be arbitrarily changed in the rectangular area.

One ASV can have only one ASV_HLI. By this ASV_HLI, a still image and each ASV sub-picture unit (ASV_S
PU) can be controlled. Therefore, a few ASV_S (recorded as different sub-video streams)
If a PU exists in the ASV for a different display mode, the display period of each ASV_SPU will be the same as the valid period of the ASV_HLI.

The audio still video highlight information ASV_HLI is the ASV highlight general information (ASV
_HLI_GI), an ASV button color information table (ASV_BTN_COLIT), and an ASV button information table (ASV_BTNIT).

ASV_HLI_GI is ASV_HLI.
Is general information applied to all buttons defined in the ASV_HLI status (ASVOB
V_HLI state), ASV_HLI highlight start time, ASV_HLI highlight end time, button selection end time, button mode (button grouping and sub-picture display type of each button group), number of button offsets (within button group) , The number of valid buttons in the button group, the number of the numerical value selection button, and the like.

ASV button color information table ASV_
BTN_COLIT is composed of three pieces of ASV button color information ASV_BTN_COLI.

Each ASV_BTN_COLI determines the color of the sub-picture (three kinds of selection colors and action colors) that repeatedly changes when a button is selected or selected.

Each ASV_BTN_COLI includes ASV selection color information (ASV_SL_COLI) and ASV action color information (ASV_AC_COLI).
I).

ASV_SL_COLI describes the display color and contrast when the button is in the “selection state = selected state”. In this selected state, the user can move the highlighted state button.

On the other hand, ASV_AC_COLI describes the display color and contrast when the button is in the “action state = selection fixed state”. In this selection confirmed state, the user cannot move the highlighted state button.

ASV_BTNIT is composed of 36 pieces of button information (ASV_BTNI). These 36 ASVs
_BTNI can also be used as one “36 button information group mode”, two “18 button information group modes”, or three “12 button information group modes”.

The above button groups correspond to the display types (4: 3, wide, letterbox,
Scan) is used to change the size and position of the display area of the button.

Each ASV button information ASV_BTNI is
ASV button position information (ASV_BTN_POSI),
ASV adjacent button position information (ASV_AJBTN_PO
SI) and ASV button command (ASV_BTN_
CMD).

[0227] In the ASV_BTN_POSI, a button color number used by the button, a display rectangular area, and an action mode of the button are described.

[0228] In ASV_AJBTN_POSI, the numbers of buttons arranged in the upper, lower, left and right directions are described.

[0229] In ASV_BTN_CMD, a command to be executed when selection of a button is determined (action state) is described.

FIG. 21 shows the sub-picture pack SP_P of FIG.
It is a figure explaining the structure of CK. One SP_PCK
Is a pack header, a packet header, a substream ID (private header), and sub-picture data.
It is configured.

The pack header of the sub-picture pack SP_PCK contains a pack start code, a system clock reference SCR, a marker bit, and a program maximum rate (10.08 Mbp) as in the case of HLI_PCK.
s), pack stuffing length, etc. are written.

The packet header of the sub-picture packet SP_PCK includes a packet start code prefix, a stream ID, a packetized elementary stream (PES) packet length, and the like.

[0233] The private header of SP_PCK includes a sub-stream ID specifying the sub-picture and its type as follows: [0010 0000b] = sub-picture corresponding to an image having an aspect ratio of 4: 3; [0001b] = sub-picture corresponding to wide image (aspect ratio 16: 9); [0010 0010b] = sub-picture corresponding to letterbox image; [0010 0011b] = sub-picture corresponding to pan-scan image.

If the data length of the last pack of the unit constituting the sub-picture is less than 2048 bytes, SP_
Add padding packet of PCK or SP
The data length is adjusted by adding a stuffing byte to the stuffing field in the packet header of _PKT.

FIG. 22 shows the still picture pack SPC of FIG.
It is a figure explaining the structure of T_PCK. One SCTP
_PCK includes a pack header, a packet header, and still image data (still image data).

As in the case of HLI_PCK, a pack start code, a system clock reference SCR, a marker bit, a program maximum rate (10.08 Mbps), a pack stuffing length, and the like are written in the pack header.

[0237] The packet header of the still picture packet SPCT_PCK includes a packet start code prefix, a stream ID, a packetized elementary stream (PES) packet length, and the like.

When the stream ID in the packet header of SPCT_PCK is [1110 0000b], it is specified that the content of the packet is a video stream (for still pictures).

[0239] The still picture stream is an MPEG1 or MPEG2 video stream that ends with a sequence end code. The decoder (on the playback device side) needs to have a function of holding the picture of the last frame (of the stream) when receiving this sequence end code.

One still picture data is one GOP (group of picture) composed of a single I picture.
It consists of. The still image data starts with a sequence header, followed by a GOP header, followed by an I picture, and then by a sequence end code.

As shown in FIG. 23, the still picture stream is divided into several still pictures (SPCT) and packed. That is, the still picture stream corresponds to a collection of one or more still picture packs.

When a still image is encoded by an MPEG1 stream, it conforms to ISO / IEC11172-2. When a still image is encoded with an MPEG2 stream, the 8th of ISO / IEC13818-2 is used.
Main Profile Main Level (MP
(＠ML). Note that a case in which a simple profile main level (SP @ ML) stream is followed is also permitted.

The GOP of a still picture has only a single I picture, and the playback time stamp (PTS) of the still picture
Minus the decode time stamp (DTS) is equal to one video frame period of the still image.

FIG. 24 is a view 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 an audio-only title AOTT,
There are two types of audio title with video (or audio / video title) AVTT.

[0246] AOTT is a title in the audio disc (A disc) 10 which has no video portion and is recorded under the audio title set directory.
Defined in TS. On the other hand, the AVTT is a title in the audio disk (AV disk) 10 which has a video part and is defined in a VTS recorded under a 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 includes an AMG 711 and one or more (up to 99) audio title sets (ATS # 1 to ATS # A).
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 a PT, an audio-only title search pointer table AOTT_SRPT, an audio manager menu program chain information unit table AMGM_PGCI_UT, and an audio text data manager ATXTDT_MG.

As shown in FIG. 17, the DVD audio zone 71 is an audio still video set ASVS71.
3 is included, the AGI included in the AMGI 7110 of FIG.
In the MGI_MAT, information (ASVS_SA) of the start address of the ASVS 713 is written (described later with reference to FIG. 25).

The AMGI 7110 is composed of two pieces of search information A
It has TT_SRPT and AOTT_SRPT. Here, ATT_SRPT is AOTT and AVT.
T is a table describing both search information, and AOT
T_SRPT is a table describing search information of AOTT only.

As described above, search information for AVTT and A
Rather than being divided into two types for OTT, ATT (AOTT
(ATT_SRPT) and AOTT
(AOTT_SRPT) is used to simplify the reproducing method for various DVD players.

FIG. 25 shows the recorded contents of the audio manager information management table AMGI_MAT included in the audio manager information AMGI of FIG.

That is, the audio manager information management table AMGI_MAT includes an audio manager identifier (AMG_ID); an audio manager end address (AMG_EA); an audio manager information end address (AMGI_EA); and the corresponding optical disk (DVD audio disk) 10. Version number of standard to be adopted (VERN); Volume setting identifier (VLMS_ID); Automatic playback information (AP_INF) indicating a playback state after a DVD audio disc is loaded into a player; Audio still video set A
SVS start address (ASVS_SA); number of title sets (TS_Ns); provider (producer / distributor of software) identifier (PVR_ID); end address of audio manager information management table (AMGI)
_MAT_EA); start address of video object set in audio manager menu (AMGM
_VOBS_SA); start address of the audio title search pointer table (ATT_SRPT_
SA); start address (AOTT_SRPT_) of the audio-only title search pointer table
SA); Start address (A) of unit table of program chain information for audio manager menu
MGM_PGCI_UT_SA); audio text data manager start address (ATXTDT_
MG_SA); Video attributes (AMGM_V) for the video object set in the audio manager menu
_ATR); number of sub-picture streams for audio manager menu (AMGM_SPST_Ns); attribute of sub-picture for video object set in audio manager menu (AMGM_SPST_AT)
R); number of audio streams in the DioManager menu (AMGM_AST_Ns); audio attributes (AMGM_AST_ATR) for the video object set in the DioManager menu; and other reserved areas.

The automatic reproduction information AP_INF includes an automatic reproduction flag AP_flag. This AP_fl
When a disc in which "0b" is described as ag is loaded into a player, the disc can be configured to be automatically played (the player can be configured not to be automatically played).

On the other hand, when a disc in which “1b” is described as AP_flag is loaded in the player, the reproduction is automatically started from the first track (track # 1 of group # 1 in the example of FIG. 10). Is done.

The above audio still video set ASV
The start address ASVS_SA of S describes the start address of ASVS by the relative number of blocks from the first logical block of the audio manager AMG. AS
When there is no VS, “00000000h” is the ASV
Written to S_SA.

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

The start address ATT_SRPT_
The start address of ATT_SRPT is written in SA with the number of blocks relative to the first logical block of AMGI.

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

ATT_SRPT_SA or AOTT_SRPT_ written to AMGI_MAT in FIG.
From SA, search pointer ATT of audio title
_SRPT or the search pointer AOTT_SRPT of the audio-only title is recorded on the disk 10.

FIG. 26 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.
Having 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 includes 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
Contains the end address of the PT.

FIG. 27 shows each audio title search pointer 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 can handle not only sound but also images, and AMG has two pieces of search information ATT_SRPT and AOTT_SRPT. ATT_SRPT in FIG. 27 includes AOTT and A
It is a table describing search information of both VTTs.

In FIG. 27, search pointer AOTT.ATT_SRP for audio-only title
Are 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
Starting address.

The search pointer AVTT_SRP for the audio title 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 part included in the video. It includes the number of objects, 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. 28 is a view 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. 28 shows a search pointer AOTT_SRP that can access only AOTT.

That is, AOTT_ included in AMGI
The SRPT includes 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 includes the number of audio-only title search pointers and the end address of AOTT_SRPT.

FIG. 29 is a search pointer table AOTT_SRPT of the audio-only title shown in FIG.
Is a diagram for explaining the contents of an audio-only title search pointer (here, AOTT_SRP # m) included in the file.

The DVD audio standard can handle not only sound but also images. AMG has two search information ATT_SRPT and AOTT_SRPT. AOTT_SRPT in FIG. 29 describes search information only for AOTT. It is a table.

That is, in FIG.
Search pointer AOTT / ATT for only title
_SRP is the 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. I have.

By the way, in the playback title control information defined in the audio manager AMG, a title group TT_GR can be specified.

The title group TT_GR is a set 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 “song”, and the title group TT_GR corresponds to “album” as an aggregate of songs (see FIG. 10). In a record or CD, when playback is started from the beginning or middle of an album, just like when playback is continued from the beginning or middle ATT of TT_GR, the playback is continued to the end of the album.
Reproduction can be continuously performed until the end of T_GR.

As the title group TT_GR, the following two types can be defined.

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

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

Audio title group ATT_GR
Is for a player (a player that handles both AOTT and AVTT) that can reproduce images and audio of the audio standard, and an audio-only title group AOTT_GR is a player (only AOTT that can reproduce only audio of the audio standard). Player).

[0279] 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 as a song) However, it means that it has both AOTT, which is a version without image, and AVTT, which is a version with image.) In the case of <B1>, search information for AOTT is described in both ATT_SRPT and AOTT_SRPT (FIG. 27). And FIG. 29).

In the case of <B2>, search information for AVTT is described only in ATT_SRPT (see FIG. 2).
7).

In the case of <B3>, search information for AOTT is described only in AOTT_SRPT (see FIG. 2).
9), the search information for AVTT is ATT_SR
It is described only in the PT (see FIG. 27).

FIG. 30 illustrates the relationship between <B1> to <B3> described above. FIG. 30 shows a group AOT of audio-only titles accessed by the audio-only title search pointer AOTT_SRP in the audio manager information AMGI of FIG.
T_GR and a group ATT_ of audio titles accessed by the audio title search pointer ATT_SRP in the audio manager information AMGI.
It illustrates the relationship with GR. FIG. 30 shows ATT_SR
It can be said that this is an example showing the relationship between PT and AOTT_SRPT.

In FIG. 30, audio title AT
T # 1 and # 9 are each composed of only the audio title AVTT with video, and ATT # 2 and # 3 are each composed of the audio title AVTT with video and audio-only title AOTT, and ATT #
4, # 5, # 7, and # 8 are each composed of only the audio-only title AOTT.

In the example of FIG. 30, nine audio titles ATT are used, and these are divided into four groups (G
R # 1 to GR # 4) for 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 only of AVTT, where AOT
T does not exist. Therefore, ATT # 1 and ATT # 9 are audio only title groups AOTT_GR
Does not exist. Therefore, the number of audio title groups ATT_GR (four in this example) and the number of audio-only title groups AOTT_GR (two in this example) generally do not match.

[0287] What is needed here is a player (AOTT and AVT) capable of reproducing images and sounds of audio standards.
When the ATT group is reproduced by a player that handles both T and the ATT group is reproduced by a player that can reproduce only audio of the audio standard (a player that handles only AOTT), the identity of the title group TT_GR is maintained. It is.

That is, the corresponding ATT_GR and AOT
T_GR is the same AT even if the GR number is different.
It is necessary to be composed of T and the order of ATT in TT_GR is also the same. Otherwise, the user will be confused. Of course, this means that the ATT which is only the AVTT and has no AOTT (ATT in FIG. 30)
# 1 and # 9) are excluded.

To satisfy the above “necessary”, “AO
It is preferable to add a restriction so that "ATT not defined as TT" and "ATT defined as AOTT" are not mixed in one ATT_GR. Thereby, ATT_G
In the part where both R and AOTT_GR exist,
The identity as TT_GR is maintained.

In the example of FIG. 30, 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 ATT in TT_GR is also the same.

FIG. 31 is a view 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 an audio object set AOT for audio-only titles.
It is composed of T_AOBS and a 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.

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

The ATS_PGCI includes a table (ATS_ASV_PBIT) having audio still video reproduction information, which will be described later in the description of FIG.

FIG. 32 shows the recorded contents of the audio title set information management table ATSI_MAT of FIG.

That is, the audio title set information management table ATSI_MAT includes the audio manager information management table AMGI_MAT.
Audio title set identifier (ATS_ID); end address of audio title set (ATS_E)
A); End address of audio title set information (ATSI_EA); Version number of the adopted audio standard (VERN); End address of audio title set information management table (ATSI_MAT_)
EA); start address (VTS_) of audio-only title AOTT video title set VTS
SA); Start address (AOTT_AO) of audio object set for audio only title
BS_SA) or the start address (AOTT) of the video object set for the audio-only title
_VOBS_SA); Start address (AT) of the program chain information table for audio title set
S_PGCIT_SA); attribute of audio object set for audio only title (AOTT_
AOBS_ATR) or attributes of the video object set for audio-only titles (AOTT_VO)
BS_ATR) # 0 to # 7; audio title set data mix coefficient (ATS_DM_COEFT) # 0
~ # 15: Other reserved areas are provided.

When the ATS does not have AOTT_AOBS, the start address VTS_SA of the AOTT VTS includes VTSTT_ATS used for AOTT.
The start address of the VTS including the VOBS is written. When ATS has AOTT_AOBS, "000
“00000h” is written to this VTS_SA.

[0299] The AOTT_AOBS_SA contains AT
When S has AOTT_AOBS, AO is represented by the number of logical blocks relative to the first logical block of ATS.
The start address of TT_AOBS is written. On the other hand, when the ATS does not have AOTT_ABOS, ATS
In OTT_VOBS_SA, the start address of VTSTT_VOBS is the VTS used for ATS.
Written with the number of logical blocks relative to the first logical block of the VTS including TT_VOBS.

[0300] 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 are prepared from # 0 to # 7. When the ATS has AOTT_AOBS, the attribute of AOTT_AOB recorded in the ATS is AOTT_AOBS.
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 kHz to 192 kHz) and the number of quantization bits (16 to 24 bits) are written in AOTT_AOBS_ATR or AOTT_VOB_ART.

The ATS_DM_COEFT is AC-
Indicates a coefficient when audio data having multi-channel output (5.1-channel output) such as 3 or DTS is mixed down to 2-channel output, and is used only for one or more AOTT_AOBs recorded in the ATS Is done. 1 if ATS does not have AOTT_AOBS
“0h” is written to all bits of each of the six (# 0 to # 15) ATS_DM_COEFTs. This one
Areas for six (# 0 to # 15) ATS_DM_COEFTs are constantly provided.

FIG. 33 shows an audio title set program chain information table (ATS_PGC) included in the audio title set information (ATSI) of FIG.
IT), audio title set cell playback information table (ATS_C_PBIT) and audio title set audio still video playback information table (AT
FIG. 4 is a diagram for explaining the contents of (S_ASV_PBIT).

As shown in FIG. 33, 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
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 ATS_PGCI_SRP and audio title set program chain information (ATS_PGC
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 an audio
A unit that defines only title AOTT, AT
S_PGCI and one or more cells (A in AOTT_AOBS or A
OTT_VOBS).

Each ATS_PGCI contains general information (ATS_P) of an audio title set program chain.
GC_GI), an audio title set program information table (ATS_PGCIT), and an audio title set cell playback information table (ATS_C_
PBIT) and a reproduction information table (ATS_ASV_P) of the audio still video for the audio title set.
BIT).

The ATS_PGIT contains one or more audio title set program information (ATS_PGI #).
1 to ATS_PGI # n) (n ≦ 99);
TS_C_PBIT is the same number of audio title set cell playback information (ATS_C_PBI) as ATS_PGI.
# 1 to ATS_C_PBI # k) (k ≦ 2
55).

[0310] Audio title video playback information table ATS_ASV_PBI for audio title set
T is each program PG in the program chain PGC
Describes the display state (display number, display timing, etc.) of the audio still video ASV with respect to.

When there is no PG having ASV in the PGC, ATS_ASV_PBIT does not exist.

When the ATS does not have AOTT_AOBS, ATS_ASV_PBIT does not exist.

ATS_ASV_PBIT starts with an ATS audio still video playback information search pointer (one or more ATS_PGI # m) for each program PG, and is followed by ATS audio still video playback information (one or more ATS_ASV_PBI # n).

That is, the above ATS_ASV_PBIT
Are ATS_PG_ASV_PBI_SRP # 1 to AT
S_PG_ASV_PBI_SRP # m and ATS_A
SV_PBI # 1 to ATS_ASV_PBI # n (n ≦ m ≦ 99).

The ATS_ASV_PBIT has the following features: * The size of ATS_ASV_PBIT is 4096 bytes or less; * The number of ATS_PG_ASV_PBI_SRP is PGC
The number of ATS_ASV_PBIs (n) is equal to the number of programs in ATS_PG_
* The number of ASV_PBI_SRPs (m) or less; * One ATS_ASV_PBI can be specified by two or more ATS_PG_ASV_PBI_SRPs described continuously; * ATS_PG_ not specifying ATS_ASV_PBI
ASV_PBI_SRP does not exist (this means that each program PG has at least one audio still video ASV).

ASV in the program PG having the following conditions
The display order and display timing of ATS_ASV_
Managed by the PBI (this means that the program PG
Is the range of the audio still video unit (A
SVU range): * Program numbers of one or more programs PG are continuous; * ATS_PG_ASV_P for each program PG
The contents of BI_SRP are the same.

FIG. 34 shows the contents of the audio title set program information ATS_PGI of FIG.

This ATS_PGI is the content of the audio title set program (ATS_PG_CNT).
And the entry cell number of ATS_PG (ATS_PG_
EN_CN), the reproduction start time of the first audio cell in the ATS_PG (FAC_ST_PTM), and the ATS
_PG playback time (ATS_PG_PB_TM) and A
Pause time of TS_PG (ATS_PG_PA_TM)
Etc. are included.

The ATS_PG_CNT contains the following contents: a description (relation allocation) indicating a physical arrangement relationship between the preceding program and the current program; and a reproduction time stamp between the preceding program and the current program. Description indicating relationship (temporal continuity) (discontinuous flag of system time clock STC); A
Description (ATRN) indicating the attribute of the OB or the attribute of the audio stream in the VOB of ATS_PG; description indicating how many bits are shifted from the sample data in channel group 2 (bit shift of channel group 2); Description of whether stereo output is allowed (downmix mode); DM_COE
Description of whether FTN is valid (DM_COEFT
N validity); AT defined by ATSI_MAT
Coefficient table number (DM_COEFTN) for downmixing AOB in ATS_PG using S_DM_COEFT number; ATS is AOTT_AO
In the case of having a BS, RTS is included in AOB of ATS_PG.
A real-time information packet (R) having a TI_id value of [n]
TI_PKT) (RT_PKT)
_Flag_n).

The ATS_PG_EN_CN is the ATS
_PG number of the first ATS cell (1 to 25)
5 ATS_CN). Note that A
ATS_PG_EN_CN for TS_PGI # 1 is “1”, and ATS_P of subsequent ATS_PGI #
G_EN_CN increases.

The FAC_ST_PTM is such that the ATS
In the case of having the OTT_AOBS, the description includes the lower 32 bits of the reproduction time stamp (presentation time stamp PTS) described in the first audio packet of the first audio cell in the ATS_PG.

The ATS_PG_PB_TM is the ATS
_PG describes the total playback time of each cell. This total playback time (seconds) is ATS_PG_
It is obtained as a value obtained by dividing PB_TM (32-bit data) by 90000.

The ATS_PG_PA_TM is the ATS_PG_PA_TM.
Has AOTT_AOBS, ATS_P
It describes the pause time that can be defined at the beginning of G. This pause time (seconds) is ATS_PG_
It is obtained as a value obtained by dividing PA_TM (32-bit data) by 90000. If the ATS does not have AOTT_AOBS, ATS_PG_PA_TM contains “0000”.
0000h ”is written.

FIG. 35 shows the contents of the audio title set cell playback information ATS_C_PBI of FIG.

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

In the above ATS_C_IXN, ATT is A
When there is no OBS, "01h" is written.

If ATT has AOBS, ATT_
Depending on the contents of C, the contents of ATS_C_IXN are as follows: * If ATS_C is a silent cell (silent cell), ATS_C is the index number of ATS_C.
"00h" is written into C_IXN; * If ATS_C is an audio cell (silent cell), ATS_C is used as the index number of ATS_C.
“1” to “99” are written in C_IXN.

In the ATS_PG, * the index number of the first audio cell is "1"; * the index number of the subsequent audio cell is the same as that of the preceding audio cell;
Alternatively, +1 is added to the index number of the preceding audio cell.
Is added.

All bits of the ATS_C_TY are A
If the TS does not have AOTT_AOBS, "0" is written.

On the other hand, when the ATS has AOTT_AOBS, the component of ATT_C (ATS_C_COMP; 2 bits) and its use (ATS_C_Usage; 4 bits) are written in ATS_C_TY.

That is, if the corresponding cell is an audio cell consisting of only audio data, ATS_C_C
“00b” is written in OMP; if the corresponding cell is an audio cell including audio data and real-time information, “01b” is written in ATS_C_COMP; if the corresponding cell is a silent cell including only audio data for silence Is ATS_C_COM
“10b” is written to P.

When ATS_C_COMP is “11b”, it is reserved for other uses.

In the ATS_C_Usage, for example, data “0001b” indicating a use such as a “spotlight portion” for highlighting (spotlighting) a specific portion in display of the audio manager menu AMGM is written. .

[0334] In the ATS_C_SA, ATS is AO
In the case of having TT_AOBS, the start address of ATS_C represented by a logical block number relative to the first logical block of AOTT_AOBS in which ATS_C is recorded is described.

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

[0336] In the ATS_C_EA, ATS is AO
In the case of having TT_AOBS, the end address of ATS_C represented by a logical block number relative to the first logical block of AOTT_AOBS in which ATS_C is recorded is described.

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

FIG. 36 is a reproduction information table (A) of the audio title set / audio still video shown in FIG.
The playback information search pointer (ATS_PG_ASV_PBI_) of the audio still video of the audio title set program included in TS_ASV_PBIT.
FIG. 3 is a diagram for explaining the contents of (SRP).

[0339] ATS_PG_ASV_PBI_SRP contains an audio still video unit number (ASVU).
N); display mode of one or more audio still video (ASV_DMOD); start address (ATS) of audio still video playback information of audio title set
_ASV_PBI_SA); and the end address (ATS_ASV_PBI_EA) of the audio still video playback information of the audio title set.

In the ASVN, the ASVU number of the ASVU including the ASV to be reproduced together with the reproduction of the audio data in the program PG is described.

The display mode ASV_DMOD describes a display timing mode, a display order mode, and the like.

When the display timing mode is 00b, a slide show is designated, and when the display timing mode is 01b, browsability is designated. Other display timing modes are reserved.

When the display order mode is 00b, sequential is specified, when 10b, random is specified, and when 11b, shuffle is specified. Other display order modes are reserved.

The display mode ASV_DMOD has the following contents: 1) Regarding the display timing of each ASV, * Whether the display timing is a specific timing based on the audio reproduction (slide show mode) or the change period (browser mode), * In the browser mode, the display timing can be changed by the user, but in the slide show mode, the display timing cannot be changed by the user. 2) Regarding the display order of each ASV * Display in the sequential mode The order mode is AT
Whether the ASV is displayed according to the display list defined in S_ASV_PBI, or each A in the AST
Specifies whether the SV is displayed at random. * In the random mode and the shuffle mode, the ASV
The display order of the ASVs in U is defined by the playback device (player) and is not defined in ATS_ASV_PBI.

ATS_ASV_PBI_SA has the following:
ATS for managing playback conditions of ASV during program playback
_ASV_PBI has a start address of ATS_ASV_
With the relative number of blocks from the first byte of PBIT,
Is described.

The ATS_ASV_PBI_EA includes:
ATS for managing playback conditions of ASV during program playback
_ASV_PBI end address is ATS_ASV_
With the relative number of blocks from the first byte of PBIT,
Is described.

FIG. 37 is a reproduction information table (A) of the audio title set / audio still video shown in FIG.
TS_ASV_PBIT, audio title set / audio still video playback information (AT
FIG. 4 is a diagram for explaining the contents of (S_ASV_PBI).

ATS_ASV_PBI is the program P
One or more ASV display lists (ASV_DLIST # 1 to ASV_
DLIST # k) (k ≦ 99).

Each ASV_DLIST describes a display list for a plurality of ASVs, and includes: * an ASV number indicating the ASV number (1-99) displayed in the ASVU; * start of ASV Button number forcibly selected at timing (FOSL_BTNN) Here, if there is no button number to be forcibly selected, this button number is set to “0”. , ASV highlight information ASV_HLI is set to one group mode, this button number is set between “1” and “36”, and when there is a button number to be forcibly selected, the ASV When the write information ASV_HLI is set to the two-group mode, the button numbers are “1” to “18”. When the highlight information ASV_HLI of the ASV is set to the three-group mode when there is a button number that is forcibly selected, the button number is set between “1” to “12”. * Program number reproduced at the ASV display start timing; * Display timing describing the start timing of the ASV display This display timing is relative to the reproduction time stamp PTS of the start of the program specified by the program number of ASV_DLIST. The playback time PTM is described. The start timing of the ASV display is a value obtained by dividing the display timing (32 bits) by 90000 in seconds.

* Start effect mode describing the visual effect mode when the display of ASV starts. The following start effect modes are available: 0000b = cut-in 0001b = fade-in 0010b = dissolve (cancel) 0011b = from above 0100b = Wipe from bottom 0101b = Wipe from left 0110b = Wipe from right 0111b = Wipe from left diagonal 1000b = Wipe from right diagonal Other = Reserved * Visual effect period measured in the following format Start effect period describing start time = Start visual effect period = Start visual effect × Video frame ×
8. Here, one video frame is 1 / 29.97 seconds (almost 1/30 second) in a 525 lines / 60 Hz TV system, and 1/25 seconds in a 625 line / 50 Hz TV system. When the start effect mode is 0000b (cut-in), “0000b” is written in the start effect period.

* End effect mode describing the visual effect mode when the display of ASV ends. The end effect modes include the following: 0000b = cut out 0001b = fade out 0010b = dissolve (cancel) 0011b = from above Wipe 0100b = Wipe from bottom 0101b = Wipe from left 0110b = Wipe from right 0111b = Wipe from left diagonal 1000b = Wipe from right diagonal Other = Reservation * The duration of visual effects measured in the following format End effect period described End visual effect period = end visual effect x video frame x
8. Here, one video frame is 1 / 29.97 seconds (almost 1/30 second) in a 525 lines / 60 Hz TV system, and 1/25 seconds in a 625 line / 50 Hz TV system. If the end effect mode is 0000b (cut out), “0000b” is written in the end effect period.

In the case where a switching transition (still image display) is made between a plurality of ASVs in the ASVU, fade-in / fade-out,
Visual effects such as wipes and dissolves can be provided. At that time, the content provider of the DVD audio disc specifies an effect mode and an effect period to be executed by the player.

The definition of the effect mode and the effect period and the execution of the visual effect are classified into the following two cases: A) In a sequential slide show or a sequential browsable image, a start effect for each ASV in the reproduction information. The mode, end effect mode, start effect period, and end effect period follow the following rules: * The start effect mode of the first ASV in the playback information is fade-in or cut-in (no effect); * in the playback information The end effect mode of the last ASV is fade-out or cut-out (no effect); * If the end effect mode of the preceding ASV is fade-out or cut-out, the start effect mode of the succeeding ASV is fade-in or cut-in. The effect is executed during the end effect period of the preceding ASV, and the start effect is Is performed using the start effect period of V; * If the end effect mode prior ASV is wipe or dissolve the start effect mode of the subsequent ASV prior ASV
In this case, the visual effect is executed within the total period of the end effect period and the start effect period; when performing an operation of searching for the next ASV in the browsable mode, the visual effect becomes the search effect. Treated in the same way as playback without operation.

When performing an operation of searching for a previous ASV in the browseable mode, or performing an operation of selecting an ASV other than the next ASV in the browseable mode, the visual effect is handled as follows. : * If the current ASV's end effect mode is wipe or dissolve, the next ASV's start effect mode is replaced by the end effect mode; * If the current ASV's end effect mode is fade out or cut out, The start effect mode of the next ASV is fade-in or cut-in, and the specified mode is guaranteed; * The end effect mode of the current ASV is fade-out or cut-out, and the start effect mode of the next ASV is wipe or cut-out. When dissolve, the start effect mode is
Replaced with fade-in or cut-in in connection with the end effect mode; B) For random / shuffled slideshows or random / shuffled browsable images, one of the following is specified by the content provider: 1) If the start effect mode, end effect mode, start effect period and end effect period that are commonly used for all ASVs in the ASVU are defined: * Start effect mode is fade-in or cut-in; * End effect mode is The ASV is displayed according to the following rules: * The first ASV is displayed with the visual effect of the start effect mode; * For the visual effect between two subsequent ASVs, the following rules apply -When the end effect mode is wipe or dissolve, the visual effect is Performed by wipe or dissolve, respectively;-When the end effect mode is fade out or cut out, the visual effect is executed by the end effect mode and start effect mode; * The last ASV is displayed according to the following rules • When the end effect mode is fade out or cutout, the visual effect is executed by the end effect mode; • When the end effect mode is wipe or dissolve, the visual effect is faded out in relation to the start effect mode. Or replaced by a cutout; 2) If the start effect mode, end effect mode, start effect period and end effect period used for each ASV are randomly generated by the player, the next in the browsable mode When performing an operation of searching for an ASV, Effect, be treated in the same way and no search operation playback.

(Note) If an audio transition restart occurs, such as in group playback, track playback, track search, or index search, the visual effect need not be guaranteed. Also, during the visual effect period, it is not necessary to guarantee the display of the sub-picture and the button operation.

In summary, the audio title set
Audio still video playback information ATS_ASV_PB
As I, there are four types of reproduction information according to the display timing mode and the display order mode described above: 1) When the display timing mode is a slide show and the display order mode is sequential, the display order of the ASV is changed. One or more display lists to be specified, the display timing of each ASV based on audio reproduction, and the visual effect of each ASV are described as reproduction information; 2) The display timing mode is a slide show, and the display order mode is random. Alternatively, in the case of shuffle, one or more display lists that specify the display timing of each ASV based on audio reproduction and the visual effect of each ASV are described as reproduction information. At this time, even if the visual effects can define the display list, the visual effects in each display list are the same. 3) When the display timing mode is browsable and the display order mode is sequential Describes one or more display lists that specify the display order of ASVs, display periods of each ASV, and visual effects of each ASV as reproduction information. At this time, even if the display period can define the display list, the display period in each display list is the same; 4) The display timing mode is browsable, and the display order mode is random or shuffled. In some cases, only one display list that specifies a display period and a visual effect commonly used for each ASV is described as reproduction information.

FIG. 38 is a block diagram illustrating a part of the configuration of a device (DVD audio player) for reproducing the recorded information in the audio zone of FIG. 5 from the optical disk of FIG. This playback device may take the configuration of a DVD video / DVD audio compatible player capable of playing back video as well as audio. Further, the playback device may be configured to be able to play an existing CD.

The playback device (DVD audio player) shown in FIG. 38 is roughly divided into a disk drive unit for rotating the DVD audio disk 10 and reading recorded data from the disk drive unit, and a still image, sub-picture or menu from the read data. And a video-based decoder for decoding and outputting a music signal and related text from the read data.

[0359] The disk drive section is driven by a rotating D.
An optical pickup 102 for detecting a corresponding optical signal from the recording pits of the VD audio disk 10, a demodulation unit 104 for demodulating the detected optical signal, and an error correction unit (ECC unit) 106 for the demodulated signal. I have. ECC
The data (no error) recorded in the lead-in area, data recording area (volume space) 28 and lead-out area in FIG. The retrieved data is the SAMG 710 of FIG.
The recorded contents include AMG711, ASVS713, ATS712, and the like.

Now, a DVD audio player capable of reproducing not only audio but also video (still image) is called a video-capable audio player (VCAP). In this VCAP, before the reproduction of the audio object AOB accompanied by the still image display is started, the program chain information AT of the audio title set is started.
Each pack in ASVU indicated by S_PGCI is D
It is read from the VD audio disc and stored in a specific buffer. ASVU
It is called a buffer.

The control information reading unit 60 shown in FIG.
713 (ASVS_SA in FIG. 25; FIG. 1)
7 (ASV_SA #; hierarchical structure in FIG. 19), the audio still video ASV data (FIG. 22) and related sub-picture data (FIG. 21) and highlight information data (FIG. 20) constituting the audio still video unit ASVU. Take them out and AS them in ASVU units
It is taken into the VU buffer 110.

[0362] The control information reading section 60 has the ATS 71
2 (ATT_SRPT, AOT in FIG. 24)
T_SRPT, ATXTDT_MG; hierarchical configuration in FIG. 8)
The audio data (FIG. 9A) or the real-time text data (FIG. 9B) is taken out from the device, and is taken into the track buffer 140.

The data fetched by the ASVU buffer 110 is transferred to the ASV object demultiplexer 112.
Supplied to The demultiplexer 112 determines the type of each packet (still picture packet, sub-picture packet, highlight information packet, etc.) included in the data reproduced from the disk 10, and converts the data in the packet. Separate and extract.

In the separated / extracted data, transfer time data and ID data indicating the type of data are recorded for each type of packet.

The demultiplexer 112 refers to the transfer time data and the ID data, and transfers the data to the corresponding input buffer.

That is, the video data (still picture data), sub-picture data, and highlight information data separated and extracted by the demultiplexer 112 are respectively
The signal is supplied to the input buffer via another signal path.

In the input buffer, the separated video data (still image data) is
4 is temporarily stored in the sub-picture buffer 11.
6, and the highlight information data is stored in AS
The information is temporarily stored in a V highlight information buffer (ASV_HLI buffer) 118.

The video data (still image data) once stored in the video buffer 114 is
, For example, N with an aspect ratio of 4: 3
It is converted to a TSC analog video signal (ASV signal).

[0369] The sub-picture data once stored in the sub-picture buffer 116 is decoded by the sub-picture decoder 126 and converted into a video signal that can be superimposed on the ASV signal.

The highlight information data once stored in the ASV_HLI buffer 118 is decoded by the ASV_HLI decoder 128.

The decoded ASV signal, sub-picture signal, and ASV highlight information are combined at a predetermined timing in the video mixer 130 and output to a monitor (not shown) outside the player.

This monitor unit is used not only as a playback video monitor of a DVD audio disk with a still picture, but also as a display means such as an on-screen display OSD. The monitor unit is not limited to a direct-view display such as a CRT display, a liquid crystal display, and a plasma display. In addition, various images including OSD information on a large screen (a menu screen, a relaxing scenery image, a recording site) Video projector that projects a still image or other single image or multi-divided image that captures the above situation.

On the other hand, the data taken into the track buffer 140 is the audio data demultiplexer 1.
42. The demultiplexer 142 determines the type of various packets (such as an audio packet and a real-time information packet) included in the data reproduced from the disk 10, and separates and extracts the data in the packet.

In the separated / extracted data, transfer time data and ID data indicating the type of data are recorded for each type of packet.

The demultiplexer 142 refers to these transfer time data and ID data and transfers the data to the corresponding input buffer.

That is, the audio data (monaural, two-channel stereo or multi-channel surround audio data) separated and extracted by the demultiplexer 142 and the real-time information data (RT
I data) are supplied to the input buffer via separate signal paths.

In the input buffer, the separated audio data is temporarily stored in the audio buffer 144, and the real-time information data is stored in the RTI buffer
6 is stored once.

The audio data once stored in the audio buffer 144 (for example, 2-channel stereo data of 96 kHz 24 bits) is output from the audio decoder 15.
4 and converted into a high-quality 2-channel analog audio signal.

The RTI decoder 156 decodes the real-time information data once stored in the RTI buffer 146 (for example, text data of lyrics corresponding to the decoded audio signal).

[0380] The decoded audio signal is sent to an audio system (a stereo system including a control amplifier, a power amplifier, a speaker, etc.) not shown, and the decoded text data is sent to the external monitor unit (not shown) at the same time. Sent.

The audio signal reproduced from the DVD audio disk 10 is reproduced as high-quality stereo sound by the above audio system, and at the same time, a still image +
The image of the lyrics is projected on a monitor TV or a projector screen.

[0382] Although not shown, user operation information from a remote controller attached to the DVD audio player is notified to a system control unit that controls the operation of the entire player. The control unit includes a microcomputer, a ROM storing a control program executed by the microcomputer, a RAM serving as a work area of the microcomputer, and other peripheral circuits. This system control unit may also have the function of the control information reading unit 160 in FIG.

The microcomputer displays the player's operation status (various setting status and DVD audio disc playback information) corresponding to the user's operation on a display panel (not shown) of the player as appropriate.

Although not shown, the control information reading section 160 includes a system time clock (STC) for knowing the operation timing of each section of the player, and a register for temporarily storing commands and information from the microcomputer. . The microcomputer of the control information reading unit 160 refers to the time of the STC as to when the player processes various data (audio data, still image data, highlight information, text data, etc.) read from the DVD audio disk 10. You can decide while doing. The timing for starting the time measurement of the STC can be determined by setting the contents of the system clock reference (SCR) included in the header of each pack read from the disk in the STC.

[0385] A group of one or more audio still videos ASV reproduced during reproduction of one or more tracks (see Fig. 10) is called an audio still video unit ASVU. Before the reproduction of the track of the DVD audio disc is started, each ASV in the ASVU is the ASV in FIG.
It is stored in the U buffer 110 in advance. In other words,
It can be said that the ASVU is a still image group which is read by the DVD audio player at one time and displayed during the reproduction period of one or several consecutive songs.

[0386] Here, a still image group (AS
The “playback period of one or more songs” in which the V still image group is displayed is referred to as an ASVU range.

The ASVU has the following features: * A plurality of ASVs in the ASVU are arranged consecutively; * The attributes of each ASV in the ASVU are the same; * One ASV belongs to only one ASVU (ie, One ASV does not belong to more than one ASVU); * The size of one ASVU is 2 Mbytes or less.

The ASVU number (ASVUN) includes each A
1 to 99 are assigned in ascending order of physical arrangement from the first ASV in the SVU.

[0389] The absolute numbers (ABS_ASVN) of the ASVs are given 1 to 99 in ascending order of the physical arrangement from each ASV in the ASVOBS.

The ASV number (ASVN) is a relative number assigned to each ASVU.
1 to 99 are assigned in ascending order of _ASVN.

[0391] Figs. 39 and 40 show audio playback within a single ASVU range and audio still video still playback when an audio still video unit (ASVU) recorded on a DVD audio disc is played back by a DVD audio player. FIG. 3 is a diagram illustrating a relationship with a reproduction timing.

An audio still video ASV reproduced together with audio data can be defined in an audio-only title AOTT. This ASV is
It can be reproduced by the video-capable audio player VCAP.

The playback of the ASV is performed by using the navigation data and audio still video set A in the audio title set program chain information ATS_PGCI.
It can be defined by an audio still video object ASVOB as playback data in the SVS.

ASVOB is composed of one still image data,
It is composed of highlight information for buttons and sub-picture data (optional).

Reproduction of one still image data is basically the same as reproduction of a DVD video still image.

Audio Still Video Unit ASVU
Is a set of ASVs from 1 to 99, and ASVU is 1
It is reproduced during reproduction of the above-mentioned tracks.

Data of this ASVU (set of ASVs)
As shown in FIG. 39, after being once captured in the ASVU buffer, it is reproduced as a plurality of still images at a predetermined timing during audio reproduction of one track (for example, one song of a certain album). .

Alternatively, as shown in FIG. 40, 1A
SVU multiple ASV data (multiple still image data)
Are once captured in the ASVU buffer, and then reproduced as a plurality of still images at a predetermined timing during audio reproduction of, for example, two tracks (two songs).

During the loading of ASVU (multiple A
During the loading of SV data into the ASVU buffer), the audio output may be muted by the player.

For ASVUs and tracks, the following rules apply: * The ASVU coverage is defined as the ASVU range. The start and end of the ASVU range coincide with track boundaries. Playback of one ASV starts at the beginning of the first track in the range; * Tracks in the ASVU range have consecutive track numbers; * If ASV is played in AOTT, one or more ASs
A VU range can be defined within the AOTT.
However, each track in the AOTT is included in only one ASVU range.

[0401] All ASV data in ASVU are
By storing in the U buffer, various still image reproduction expressions are possible. That is, by changing the display order and display timing of each ASV in various ways, and changing the screen switching method (fade-in / fade-out, wipe, etc.) in various ways, the limited ASV in the ASVU buffer can be used in various ways. By turning, various still image reproduction expressions are possible.

Specifically, two types of slide shows (sequential slide show and random / shuffle slide show) and three types of browseable still image display (sequential browseable still image display with automatic screen switching, automatic screen switching) , A random browse / shuffle browsable still image display, and a sequential browsable still image display in which a user switches screens).

A) Slide Show The slide show functions by synchronizing the still image reproduction timing of each ASV with the audio reproduction. In this case, the display timing of each ASV is determined by the content provider, and a still image of each ASV is reproduced at a specific time during audio reproduction.

A1) Sequential slide show * The display order of ASVs is determined by the provider; * All ASVs in ASVU or some of them
Is selected and registered as playback information; * The display timing of ASV is determined by the provider; * The user cannot change the display timing or display order of ASV.

A2) Random / Shuffle Slide Show * The display order of ASVs is randomly determined by the player (the software of the microcomputer). * In the random mode, unspecified ASVs are randomly selected from a plurality of ASVs in the ASVU. Selected; * In shuffle mode, each ASV in ASVU is selected only once. When the reproduction of all the ASVs is completed, the shuffle history is reset and the reproduction is started again. * The display timing of the ASV is determined by the provider. * The user cannot change the display timing and the display order of the ASV.

B) Browseable Still Picture Display The browseable still picture display functions when the content provider intends to allow the user to browse the still picture during audio playback. In this case, each A
The reproduction of the SV is controlled by a reproduction period determined by the provider.

B1) Sequential screen switching is automatic
Browsing still image display * The display timing of ASV is determined by the provider; * All ASVs in ASVU or some of them
Is selected and registered as reproduction information. * The display period of ASV is determined by the provider. * If the minimum period and the maximum period of ASV display are specified by the provider, the player (the software of the microcomputer) ) Determines the display period randomly between the specified minimum and maximum periods for each ASV; * The first ASV in the playback information automatically starts when the playback of the corresponding track starts. Is displayed; * The user can select the leading ASV or the trailing A
It is possible to skip to the SV or directly select the nth ASV; * Unless a user skip or user selection is made, the display of the ASV is maintained for a determined period, and after that period, the display in the playback information * If the playback of the last ASV in the playback information ends before the audio playback of one or more tracks corresponding to the ASVU range ends, the playback of the ASV is It is repeated according to the playback information.

B2) Random / shuffle browsable still image display with automatic screen switching * The display order of ASVs is randomly determined by the player (software of the microcomputer); * In the random mode, a plurality of ASVUs are displayed. An unspecified ASV is randomly selected from the ASVs; * In the shuffle mode, each ASV in the ASVU is selected only once; * The display period of the ASV is determined by the provider; If the maximum period is specified by the provider, the player (the software of the microcomputer) randomly determines the display period between the specified minimum period and maximum period for each ASV; The ASV first selected by the Automatically displayed on start-up; * user can skip to the next ASV to be selected, but there is no guarantee about the result of skipping to the previous ASV; * ASV unless the user skips Is maintained for a determined period of time, after which time the next ASV selected by the player is automatically displayed; * In the random mode, audio playback of one or more tracks corresponding to the ASVU range ends. Until you have multiple A
A random play of the SV follows.

On the other hand, in the shuffle mode, if the reproduction of all the ASVs in the ASVU ends before the audio reproduction of one or more tracks corresponding to the ASVU range ends, the shuffle history is reset and the reproduction is started again. B3) Sequential browsable still image display in which the user switches screens * The display order of ASVs is determined by the provider; * All ASVs in ASVU or part of the ASVs
Is selected and registered as playback information; * The display period of the ASV is determined by the provider; * The first ASV in the playback information is automatically displayed when playback of the corresponding track starts; * The user can specify the preceding ASV or the succeeding A
It is possible to skip to the SV or select the nth ASV directly; * The display of the ASV is maintained unless a user skip or user selection is made.

FIG. 41 shows a case where the DVD audio disc is
5 is a flowchart for explaining an operation in the case of reproducing with a VD audio player.

[0411] When a disc is set on the disc tray (not shown) of the DVD audio player, the microcomputer of the player checks from the information in the lead-in area 27 whether the disc is a playable disc. (Step ST10).

[0412] If the disc cannot be read by the player (NO in step ST12), a predetermined error process is executed (step ST14), and the reproducing operation ends.

[0413] As this error processing, a message such as "This disc cannot be read. Please replace the disc." Is displayed on the display panel of the player, and when the user removes the desk from the player, the state of the player is initialized. Reset it.

[0414] If the disc can be read by the player (step ST12 YES), the description of the volume / file structure 70 is read by the player (step ST16).

[0415] Based on the description thus read, the contents of the audio manager AMG711 (or the simple audio manager SAMG710) are read into the system memory inside the DVD player (not shown) (step ST18).

[0416] If the target DVD audio player is an audio-only player AOP having no video playback (still picture playback) function (AOP in step ST20), the process directly proceeds to audio playback processing.

[0417] That is, a reproduction group and a reproduction track are selected by a user operation or a player's default setting, and a group and a track from which reproduction is to be started are determined (step ST22).

For example, referring to the example of FIG. 10, group # 1 (symphony No. 1) is set by the player default setting.
Track # 1 (first movement) is selected. The user operates group # 2 (Symphony No. 2
Number 4) (4th movement)
As the one selected in step ST22, the group #
The second track # 4 is determined.

[0419] When the group and the track to be reproduced are determined in this way, the audio title set information ATSI (Fig. 31) of the corresponding audio title set is read from the disc, and the program chain information PG
CI (ATS_PGCI # in FIG. 33) is DV (not shown)
It is held in the system memory inside the D player (step ST24).

[0420] When the ATS_PGCI to be reproduced is read into the system memory, the ATS_PGI # n therein is read.
The program number to be reproduced is determined from (contents are shown in FIG. 34), and ATS_C_PBI # k (contents shown in FIG. 35) is determined.
, The cell number to be reproduced is determined (step ST2).
6).

After the program number (for example, program # 1 in FIG. 5) and the cell number (for example, cell # 1 in FIG. 5) to be reproduced are determined, initial settings are made to the various decoders in FIG. 38 (step ST28). Audio reproduction is started from a target cell (for example, cell # 1 of program # 1 in FIG. 5) (step ST30).

[0422] This audio reproduction is continued until all cells are reproduced (unless the user presses the reproduction stop button in the middle) (no loop in step ST32).

[0423] When the reproduction of the last cell is completed (YES in step ST32), the processing at the end of reproduction is executed (step ST34), and the reproduction operation ends.

[0424] The process at the end of the reproduction is as follows. The first track number # 1 of the program (album) recorded on the disc is put out on the display panel of the player, and stands by in a stopped state, and the user takes out the desk from the player. For example, the state of the player is reset to an initial state.

[0425] In step ST20, if the target DVD audio player is a video-capable audio player VCAP having a video playback (still picture playback) function (VCA in step ST20).
P), the description contents of the AMG read into the system memory (ASVS_SA in the AMGI_MAT in FIG. 25) are checked (step ST38), and the audio still video set ASVS is set to the "disc currently set".
It is checked whether it exists in step ST4.
0).

When ASVS does not exist (ASVS_S
(When "00000000h" is written in A)
(No in Step ST40), Steps ST22 to ST22
In accordance with the flow of the process at 34, audio reproduction without still image reproduction is executed.

When ASVS exists (ASVS_SA)
If an address other than "00000000h" has been written in (step ST40 YES), the process proceeds to the process in FIG.

[0428] Fig. 42 shows that a DVD audio disc is
11 is a flowchart illustrating an operation of displaying an audio still video in the case of reproducing with a VD audio player.

As in the case of step ST22 in FIG. 41, a reproduction group and a reproduction track are selected by a user operation or default setting of the player, and a group and a track from which reproduction is to be started are determined (step ST42).

When the group and the track to be reproduced are determined in this way, the audio title set information ATSI (FIG. 31) of the corresponding audio title set is read from the disc, and the program chain information PG
CI (ATS_PGCI # in FIG. 33) is DV (not shown)
It is stored in the system memory inside the D player (step ST44).

Subsequently, the audio still video unit ASVU shown in FIG. 17, FIG. 19, FIG. 39 or FIG.
The data of one or more audio still video ASVs constituting the ASVU (packs constituting the ASVOB # in FIG. 19) is read from the disk, and the ASVU buffer 110 in FIG. 38 (the memory in FIGS. (Block ST45).

For example, assuming that track # 1 of group # 1 in FIG. 10 is the first ASVU range, still picture data (eg, in a concert hall) used during audio reproduction of the first movement of Beethoven's Symphony No. 1 Orchestra and various natural landscape paintings)
Stored in ASVU buffer.

[0433] After the still image data used during the audio reproduction of the predetermined music (the first movement of the symphony No. 1) is stored in the player, the ATS_PG to be reproduced is
The program number to be reproduced is determined from ATS_PGI # n (contents shown in FIG. 34) in CI, and ATS_C_
The cell number to be reproduced is determined from PBI # k (the content is shown in FIG. 35) (step ST46).

After the program number (eg, program # 1 in FIG. 5) and cell number (eg, cell # 1 in FIG. 5) to be reproduced are determined, various decoders (video decoder 124, sub-picture decoder 126, Highlight decoder 128, audio decoder 154
Etc.) (step ST48). Thus, the preparation for the audio reproduction accompanied by the still image display is completed.

That is, at the same time as the audio reproduction of the corresponding ATS is started from the target cell (for example, cell # 1 of program # 1 in FIG. 5), the ASV stored in the memory (ASVU buffer) based on the control information Still image display is started (step ST50).

The control information includes the type of still image display (sequential slide show, random / shuffle slide show, sequential browsable still image display with automatic screen switching, and random / shuffle browsing with automatic screen switching). This is control information corresponding to the display order, display timing, and display period of each ASV in the ASVU in accordance with the possible still image display or the sequential browsable still image display in which the screen is switched by the user. In the embodiment of FIG. 38, the control information is held in a RAM (not shown) in the control information reading unit 160 or a system memory (not shown).

[0437] In the audio reproduction with the still image display thus started, all cells corresponding to one or more tracks in the ASVU range at that time are reproduced (unless the user presses the reproduction stop button in the middle). (ST52 No loop).

After the track reproduction in the AVSU range (for example, the first movement of the first symphony) ends, the ASVU range to be reproduced next (for example, the second movement of the first symphony)
If there is a movement (Yes in step ST53), the processing in steps ST45 to ST52 is executed for the tracks and ASVs in the next ASVU range.

After the reproduction of the track in the current AVSU range (for example, the fourth movement of Symphony No. 9) is completed, if there is no ASVU range to be reproduced next, or if the user performs an operation of stopping reproduction (step ST53). No),
The processing at the end of the reproduction is executed (step ST54), and the reproduction operation ends.

The processing at the end of the reproduction is as follows. The first track number # 1 of the program (album) recorded on the disc is put out on the display panel of the player and stands by in a stopped state. There is a method of displaying a still picture of an ASV that has been played, displaying a message such as "Disc playback has ended" or the like, and resetting the player state to the initial state when the user removes the desk from the player. .

FIG. 43 is a flowchart for explaining the procedure for recording DVD audio information on the optical disk of FIG.

After audio data and still picture data (video data in some cases) to be recorded on the DVD audio disc are prepared, a content provider (manufacturer and seller of the DVD audio disc)
In order to reproduce audio data and still image data (or video data) as intended by the provider, various data (SAMG, AMG, ASVS,
TS #, VTS #) (step ST10)
0). Various data to be created are shown in FIGS.
It has a configuration as shown in FIGS.

The various data thus created are shown in FIG.
It is organized and hierarchized as shown in FIGS. 10 to 15 and 19 (step ST102) (step ST102).
Is not necessarily performed after the processing of ST100, and usually, ST100 and ST102 are collectively performed.)

The various data thus obtained are packed in a configuration as shown in FIGS. 9 and 20 to 23 (step ST104).

[0445] The above steps ST100 to ST102 (or ST100 to ST104) are the main part of the DVD audio disc encoding process. This encoding process can be realized as application software by a computer program or a dedicated encoder IC.
Or can be embodied.

The various data packed in step ST104 are arranged in the logical sector of FIG. 2 in a predetermined address order (step ST106). At that time, SA in FIG.
The MG is arranged on the side with the smallest address number (logical sector number), and is arranged so that the address number increases in the order of AMG, ASVS, and ATS. If the disc contains video data (VTS), the VMG in FIG. 6 is located at an address after the last ATS in FIG.
Is located at the address after the VMG.

When the contents of the recording track in the data recording area 28 in FIG. 2 are determined in this way, pits corresponding to the contents of the sector information arranged on the recording track are formed on a disk master (not shown) by a method such as laser cutting. Is done. Using this disc master as a male type (disc stamper), the recording layer 17 of FIG. 3 or FIG. 4 is formed (mass replication) (step ST108).

The transparent substrate 14 having the recording layer 17 thus formed and the transparent substrate 14 having the dummy layer DL (FIG. 3) or the dummy / label layer DLB (FIG. 4) have a predetermined thickness (5).
(5 ± 15 μm).

In the case of the configuration as shown in FIG. 3, the label LB corresponding to the recorded contents has the outer surface of the transparent substrate 14 not having the recording layer 17 (from the outside of the center hole of the disc to the inside of the outer periphery of the disc). Range).

Thus, DVD audio disk 10 having a two-layered bonding structure as shown in FIG. 1 is manufactured (mass-produced) (step ST110).

In the embodiment described above, the DVD audio data and / or
Alternatively, the description has been made on the assumption that DVD video data is recorded on an optical disc. However, the data structure of the present invention is not limited to the case where the data is recorded on an optical disk. For example, a bit stream including data having a structure as shown in FIG. 17 may be digitally broadcast or digitally communicated. (In this case, a radio wave or a communication line functions as a medium. A communication terminal such as a DVD broadcast receiver or a personal computer functions as a DVD audio player.) The present invention is described in the above embodiments. The present invention is not limited to this, and various modifications and changes can be made at the stage of implementation without departing from the gist of the invention. In addition, the embodiments may be implemented in appropriate combinations as much as possible, and in such a case, effects of the combinations are obtained.

Furthermore, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of constituent elements disclosed in this application. For example, even if one or a plurality of constituent elements are deleted from all the constituent elements described in the embodiment, if at least one of the effects of the present invention or the effects of implementing the present invention is obtained, the constituent elements may be deleted. The deleted configuration can be extracted as an invention.

[0453]

According to the present invention, the DVD audio standard can be handled in a manner different from the DVD video standard.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of the structure of an optical disk 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 / logical sector of data recorded thereon.

FIG. 3 is a view exemplifying a configuration in a case where a label is formed on the opposite side of a data reading surface in a case where the recording layer of the optical disc of FIG. 1 has a single-layer structure.

FIG. 4 is a diagram exemplifying a configuration in which a label is formed on a dummy layer on a side opposite to a data reading surface when a recording layer of the optical disc of FIG. 1 has a single-layer structure;

FIG. 5 is a view for explaining a hierarchical structure of information recorded in a DVD audio zone among various information recorded on the optical disc of FIG. 1;

FIG. 6 is a view for explaining a hierarchical structure of information recorded in a DVD video zone among various information recorded on the optical disc of FIG. 1;

FIG. 7 shows the program chain information (ATS_PGCI) of the DVD audio zone of FIG. 5 and the program chain information (VTS_PGC) of the DVD video zone of FIG.
I) video information (VT) commonly accessed by both
FIG. 9 illustrates an example of S_C # 2).

FIG. 8 shows recorded contents (A) of the DVD audio zone in FIG. 5;
FIG. 4 is a view for explaining the data structure of (OTT_AOBS).

9 is a view for explaining the configuration of the audio information pack and the real-time information pack of FIG. 8;

FIG. 10 is a diagram illustrating an example of a data structure recorded on a single side of the optical disc in FIG. 1 as recording contents of DVD audio accessible by a user.

11 shows information (DVD) recorded on the optical disk shown in FIG.
FIG. 3 is a diagram illustrating an example of a directory structure of audio and DVD video data files).

FIG. 12 shows information (DVD) recorded on the optical disc shown in FIG.
FIG. 6 is a diagram for explaining another example of the directory structure of audio and DVD video data files).

13 is a view for explaining a case where a file in a directory on the video content side is accessed from a directory on the audio content side in the directory structure of FIG. 11;

FIG. 14 is an exemplary view for explaining a case where a file in a directory on the audio content side links to a file in a directory on the video content side in the directory structure of FIG. 11;

FIG. 15 shows the file access of FIGS. 5 and 6;
The figure explaining an example of how it is performed in the volume space of FIG.

FIG. 16 is an exemplary view for explaining the contents of a simple audio manager (SAMG) provided in the DVD audio zone of FIG. 5;

FIG. 17 is an exemplary view for explaining the contents of an audio still video set (ASVS) provided in the DVD audio zone in FIG. 5;

FIG. 18 is a view for explaining recorded contents of audio still video unit information (ASVUI) in FIG. 17;

19 is an exemplary view for explaining the recorded contents of the audio still video object set (ASVOBS) in FIG. 17;

FIG. 20 is a view for explaining the structure of the highlight information pack of FIG. 19;

FIG. 21 is a view for explaining the structure of the sub-picture pack of FIG. 19;

FIG. 22 is a view for explaining the structure of the still image pack of FIG. 19;

FIG. 23 is an exemplary view for explaining a correspondence relationship between a group of still image packs shown in FIG. 22 and still image streams;

FIG. 24 is an exemplary view for explaining the contents of audio manager information (AMGI) in the DVD audio zone in FIG. 5;

FIG. 25 shows the audio manager information (AMG) shown in FIG.
The figure explaining the recording content of the audio manager information management table (AMGI_MAT) included in I).

FIG. 26 shows the audio manager information (AMG) shown in FIG.
The figure explaining the content of the search pointer table (ATT_SRPT) of the audio title contained in I).

FIG. 27 is an exemplary view for explaining the contents of an audio title search pointer (ATT_SRP) included in the audio title search pointer table (ATT_SRPT) of FIG. 26;

FIG. 28 shows the audio manager information (AMG) shown in FIG.
The figure explaining the content of the search pointer table (AOTT_SRPT) of the audio only title included in I).

29 is an audio-only title search pointer (AOT_SRPT) included in the audio-only title search pointer table (AOTT_SRPT) of FIG. 28;
The figure explaining the content of (TT_SRP).

FIG. 30 shows the audio manager information (AMG) shown in FIG.
The audio-only title group (AOTT_GR) accessed by the audio-only title search pointer (AOTT_SRP) in I) and the audio title accessed by the audio title search pointer (ATT_SRP) in the audio manager information (AMGI) Group (ATT_GR)
FIG.

FIG. 31 is an exemplary view for explaining recorded contents of an audio title set (ATS) in the DVD audio zone in FIG. 5;

FIG. 32 shows audio title set information (A in FIG. 31);
FIG. 4 is a view for explaining recorded contents of an audio title set information management table (ATSI_MAT) included in the TSI).

FIG. 33 shows the audio title set information (A
Audio title set program chain information table (ATS_PGCIT) and audio title set cell playback information table (ATS_
C_PBIT) and an audio title set audio still video playback information table (ATS_ASV_
The figure explaining the content of (PBIT).

FIG. 34 is an exemplary view for explaining the contents of audio title set program information (ATS_PGI) in FIG. 33;

FIG. 35 is an exemplary view for explaining the contents of audio title set cell playback information (ATS_C_PBI) in FIG. 33;

36 is a reproduction information table (ATS_ASV) of the audio title set / audio still video of FIG. 33.
FIG. 9 is a diagram for explaining the contents of an audio still video playback information search pointer (ATS_PG_ASV_PBI_SRP) included in the audio title set program included in the audio title set program.

FIG. 37 shows a reproduction information table (ATS_ASV) of the audio title set / audio still video shown in FIG. 33;
_PBIT), the audio title set
Audio still video playback information (ATS_ASV_
The figure explaining the content of (PBI).

38 is a block diagram exemplifying a part of the configuration of a device (DVD audio player) for reproducing recorded information of the audio zone of FIG. 5 from the optical disc of FIG. 1;

FIG. 39 shows an example in which an audio still video unit (ASVU) recorded on a DVD audio disc is reproduced by a DVD audio player.
FIG. 4 is a view for explaining an example of a relationship between audio reproduction in a VU range and still reproduction timing of audio still video.

FIG. 40 shows a case in which an audio still video unit (ASVU) recorded on a DVD audio disc is reproduced by a DVD audio player.
FIG. 9 is a diagram for explaining another example of the relationship between audio reproduction in the VU range and still reproduction timing of audio still video.

FIG. 41 is a flowchart for explaining the operation when a DVD audio disc is reproduced by a DVD audio player.

FIG. 42 is an exemplary flowchart for explaining the operation of displaying an audio still video when a DVD audio disc is reproduced by a DVD audio player;

FIG. 43 is an exemplary flowchart for explaining the procedure for recording DVD audio information on the optical disc in FIG. 1;

[Explanation of symbols]

10 optical disc for DVD audio (A disc or AV disc); 14 transparent substrate (such as polycarbonate); 17 recording layer (reflective layer or translucent film); 19
... Readout surface; 20 ... Adhesive layer (ultraviolet curing resin etc.);
22: Center hole; 24: Clamp area; 25: Information area; 26: Lead-out area; 27: Lead-in area; 28: Data recording area (volume space);
LB: label; DL: dummy layer; DLB: dummy / label layer; RL: read laser beam; 70: volume / file structure; 71: DVD audio zone;
Video zone 73 Other recording area 710 Simple audio manager SAMG 711 Audio manager AMG 712 Audio title set ATS 713 Audio still video set ASV
S; 7110... Audio manager information AMGI; 7
111: Video object set for audio manager menu AMGM_VOBS; 7112: Backup of audio manager information AMGI_BUP; 7
120 ... Audio title set information ATSI; 71
21: audio-only title audio object set AOTT_AOBS; 7123: audio title set information backup ATSI_BU
P; 721 Video manager VMG; 722 Video title set VTS; 7210 Video manager information VMGI; 7211 Video object set for video manager menu VMGM_VOBS; 7212
... Video manager information backup VMGI_BU
P; 7220 ... Video title set information VTSI; 7
221 video object set VTSM_VOBS for video title set menu; 7222 video object set VT for video title set title
STT_VOBS; 7223: Backup of video title set information VTSI_BUP; 102: Optical pickup (optical head); 104: Demodulation unit; 106: Error correction unit (ECC unit); 110: Buffer for audio still video unit (ASVU buffer); ... A
SV object demultiplexer; 114: still image video buffer; 116: still image sub-image buffer;
118 ... Highlight information buffer for still image (ASV_H
LI buffer); 124 ... video decoder for still image; 1
26: Still picture sub-picture decoder; 128: Still picture highlight information decoder (ASV_HLI decoder); 13
0: Video mixer; 140: Track buffer; 142
... Audio data demultiplexer; 144 Audio buffer; 146 Real-time information buffer (RTI buffer); 154 Audio decoder;
56 ... real-time information decoder (RTI decoder);
160 ... Control information reading unit (microcomputer which reads management control information and performs control based on it).

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) G11B 27/00 G11B 27/00 DF term (reference) 5D044 AB05 AB08 BC06 CC04 DE14 DE27 DE48 EF05 FG18 GK11 5D090 BB10 CC14 GG12 GG36 5D110 AA19 BB06 DA04 DA11 DA12 EA07

Claims (4)

[Claims] 1. An information medium having a lead-in area and a volume space following the lead-in area, wherein the volume space is configured to include an audio zone, and the audio zones are arranged in order from a side closer to the lead-in. A simple audio manager, an audio manager, and an audio title set managed by the simple audio manager or the audio manager; the audio title set includes linear PCM data or lossless packed PCM data; Contains program chain information for managing the playback order of the recorded contents, and the simple audio manager It is composed of a table showing the contents of CM data or packed PCM data, this table includes a plurality of audio playback pointer tables, and the simple audio manager arranged on the side near the lead-in is earlier than the audio manager. An audio information medium configured to be read. 2. The system of claim 1, wherein the volume space further comprises a video zone after the audio zone and further away from the lead-in. Medium. 3. A simple audio manager having a lead-in area and a volume space following the lead-in area, wherein the volume space includes an audio zone, and the audio zones are arranged in order from a side closer to the lead-in. , An audio manager, and an audio title set managed by the simple audio manager or the audio manager, wherein the audio title set includes linear PCM data or lossless packed PCM data, and the audio title set includes a recording thereof. The simple audio manager includes program chain information for managing a playback order of contents, and the simple audio manager includes a linear PC recorded in the volume space.
An optical pickup configured to use an optical disk configured to include a plurality of audio playback pointer tables, the table including a table indicating the contents of M data or packed PCM data; A signal processing circuit for demodulating and error correcting information read by the optical pickup; and a decoding circuit for decoding error corrected information demodulated by the signal processing circuit. A disc reproducing apparatus configured to read out information on the simple audio manager arranged on the side closer to the audio player before reading out information on the audio manager. 4. A system having a lead-in area and a volume space following the lead-in area, wherein the volume space is configured to include an audio zone, wherein the audio zone is a simple audio manager, an audio manager, and the simple audio manager. A manager or an audio title set managed by the audio manager, wherein the audio title set can include linear PCM data or lossless packed PCM data, and the audio title set can reproduce the recorded content. The simple audio manager may include a program chain information for managing an order, and the simple audio manager may include a linear PC recorded in the volume space.
An optical disc configured to include a table indicating the contents of M data or packed PCM data, wherein the table can include a plurality of audio playback pointer tables; And creating the simple audio manager; packing information including the created audio title set in a predetermined configuration; and storing the simple audio manager, the audio manager, and the packed audio title set in the lead-in. An information recording method, characterized in that the information is recorded on the optical disc in order from the near side.