JP3375931B2 - Information recording medium and reproducing apparatus therefor - Google Patents

Information recording medium and reproducing apparatus therefor

Info

Publication number
JP3375931B2
JP3375931B2 JP2000064247A JP2000064247A JP3375931B2 JP 3375931 B2 JP3375931 B2 JP 3375931B2 JP 2000064247 A JP2000064247 A JP 2000064247A JP 2000064247 A JP2000064247 A JP 2000064247A JP 3375931 B2 JP3375931 B2 JP 3375931B2
Authority
JP
Japan
Prior art keywords
information
audio
title
video
ats
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2000064247A
Other languages
Japanese (ja)
Other versions
JP2000293951A (en
Inventor
薫 山本
祥三 江間
孝夫 澤辺
英宏 石井
義謹 長谷川
外喜博 高橋
Original Assignee
パイオニア株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP11615098A priority Critical patent/JP3357288B2/en
Application filed by パイオニア株式会社 filed Critical パイオニア株式会社
Priority to JP2000064247A priority patent/JP3375931B2/en
Publication of JP2000293951A publication Critical patent/JP2000293951A/en
Application granted granted Critical
Publication of JP3375931B2 publication Critical patent/JP3375931B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of an information recording medium such as a DVD disc in which sound information such as music having a different recording system or encoding system is recorded.

[0002]

2. Description of the Related Art A video DVD (disc conforming to the DVD-Video standard) is known as a recording medium for recording video information such as movies. Video DVDs are widely used as recording media for video information such as movies because of their large capacity.

Also, an audio DVD (a disc conforming to the DVD-Audio standard) has been developed in which only audio information such as music is recorded instead of video information such as a movie. This audio DVD
Since the DVD has a large capacity, it is possible to record audio information corresponding to a plurality of CDs (compact discs) on one audio DVD. Further, in addition to video information such as a movie, it is also possible to record audio information corresponding to a music CD of a soundtrack version of the movie.

[0004]

The audio DVD is
It aims at recording audio information such as music, and is trying to enable unprecedented multi-channel playback. Also, not only multi-channel but also 2c
h Even for stereo playback, we are trying to enable high-quality playback that has never existed before.

In such a DVD audio disc, when only multi-channel audio information is recorded, a person having a reproduction device dedicated to 2ch can hear only a part of the sound or cannot reproduce it at all. Causes problems such as.

Therefore, in order for even a person who has only a reproduction device dedicated to 2ch to enjoy this disc, it is necessary to record audio information for 2ch reproduction together with multichannel audio information on the disc.

However, in this case, the two types of audio information are of course recorded with the same title and the same song. Therefore, these two types of audio information are as they are,
If it is recorded on the disc, there are two kinds of titles having the same name and songs having the same name, which causes a problem of confusing the user. This problem is not only caused by different reproduction modes such as channels, but also different recording modes such as binaural recording, or different encoding methods such as AC-3, and further, these reproduction modes, recording modes, or The same problem occurs when the combination of encoding methods is different.

The present invention has been made in view of the above points. Even when a plurality of audio information different in recording form, reproduction form, encoding system, etc. is recorded on a disc, the present invention is made for the user. An object of the present invention is to provide an information recording medium capable of appropriately reproducing each audio information without causing confusion.

[0009]

An information recording medium according to the present invention includes an audio information recording area (ATS) in which a plurality of audio information having different attributes are recorded, and reproduction control information (ATS_PGCI) defined for each audio information. An information recording medium having a reproduction control information recording area (ATSI) in which is recorded as identification information for associating a plurality of audio information having different attributes as the same work, in the reproduction control information recording area, Attribute information indicating an attribute of the audio actual information and block type information indicating whether the plurality of audio information have different numbers of channels or different encoding systems. Is characterized by.

According to the present invention, the <br/> audio information different same content of attributes, it is possible to manage under the contents, even if the user is an audio information different same content of attributes, There is no need to specify each audio information, and the user is not confused.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings.

(1) DVD Video Format First, a recording format (physical recording format) of video information and audio information (including music information; hereinafter the same) on a video DVD will be described with reference to FIG.

(1.1) Physical Format As shown in FIG. 1, the video DVD 1 has a lead-in area LI at its innermost peripheral portion and a lead-out area LO at its outermost peripheral portion, and a video is recorded between them. A plurality of VTSs (Video Title Set) 4 which are zones and in which video information and audio information each have an ID (identification) number.
It is recorded by being divided into (VTS # 1 to VTS # n). Here, the VTS is related to the number of pieces of audio information and sub-picture information included therein, and the attributes such as specifications and supported languages are the same. One work) is a set (collection). Immediately outside the lead-in area LI, there is a UDF (Universal DiskForma) that has information for managing the format of the files recorded on the disc.
t) 2 is recorded, followed by VMG (Video Manage
r) 3 is recorded. The information recorded as the VMG3 is, for example, a menu showing selection items for the user, information for preventing illegal copying, or an access table for accessing each title, and the video information recorded on the video DVD 1. And management information relating to the entire voice information.

One VTS 4 is a VTSI (Video Title).
It is divided into a plurality of VOBs (Video OBject) 10 each having an ID number and recorded. Here, a portion composed of a plurality of VOBs 10 is called a VOB set (VOBS).

VTSI 11 recorded at the beginning of VTS 4
PGCI (Program Chain Informatio), which is various information about a program chain that is a logical division that combines a plurality of cells (cells will be described later).
Information such as n) is recorded. In addition, in each VOB10,
The substantial part of video information and audio information is recorded.

One VOB 10 is composed of a plurality of cells 20 each having an ID number. One cell 20
Is a plurality of VOB units (V
OBU) 30. Where VOBU30
Here, one unit is composed of any of video information, audio information, and sub-picture information (meaning sub-picture information such as subtitles in a movie) or only a navigation pack described later.

One VOBU 30 includes a navigation pack 41 in which control information for controlling video information included in the VOBU 30 is stored, a video pack 42 including video data as video information, and an audio as audio information. An audio pack 43 containing data and a sub-picture pack 4 containing sub-picture data as sub-picture information
4 and. Here, only video data is recorded as video data, and only audio data is recorded as audio data. Further, as the sub-picture data, only graphic data such as characters and figures as sub-pictures is recorded.

In the pack header recorded at the beginning of each pack P, the reproduction time at which the data contained in each pack P should be read out from the track buffer in the reproducing apparatus described later and input to each buffer should be started. Read start time information called SCR (System Clock Reference) indicating the read start time on the axis, a start code indicating the start of the pack P, and the like are recorded.

The navigation pack 41 includes search information for searching for a video or audio to be reproduced and displayed (specifically, a D in which the video or audio to be reproduced and displayed is recorded.
DSI (Data Search In) which is an address on VD1)
formation) data 51 and PCI (Presentation Control) which is information relating to reproduction display control when reproducing and displaying the video or audio searched based on the DSI data 51.
Information) data 50.

All the video packs 42 included in one VOBU 30 include one or more GOPs (Group Of Pic).
ture). The GOP is an MPEG2 (Moving Pictu) which is an image compression method adopted when recording video information on the DVD 1 in the present embodiment.
Re Experts Group 2) The smallest image unit that can be reproduced independently as defined in the standard.

In the above-described hierarchical format recording format shown in FIG. 1, each section is a producer of recording information to be recorded in the DVD 1 (hereinafter, simply referred to as a producer).
According to the intention, it is set freely and recorded. By performing reproduction for each of these sections based on the later-described logical structure, various reproductions rich in change can be performed.

(1.2) Logical Format Next, a logical format (logical structure) in which information recorded by the physical divisions shown in FIG. 1 is combined will be described with reference to FIG. The logical structure shown in FIG.
Information is not actually recorded on the DVD 1 with that structure, but reproduction control information (access information or access information or reproduction information) for combining and reproducing each data (especially cell 20) shown in FIG. 1 with the logical structure shown in FIG. (Time information etc.) is recorded on the DVD 1, particularly in the VTSI 11.

For convenience of description, starting from the lower hierarchy of FIG. 2, one program 60 is logically combined by selecting and combining a plurality of cells 20 in the physical structure described in FIG. Composed. The producer can define one or a plurality of the programs 60 as a minimum unit that the viewer can freely select and view, and this unit can be defined as PTT (Part o).
f Title).

Here, regarding the number of one cell 20,
When the cell 20 is handled in the physical format shown in FIG. 1, it is treated as a cell ID number (in FIG. 1,
Indicated as cell ID #. ), When handled in the logical format shown in FIG. 2, they are treated as cell numbers in the order of description in PGCI described later.

One PGC (Program Chain) 61 is logically constructed by combining a plurality of programs 60. The PGCI described above is defined in units of this PGC 61,
In the PGCI, the reproduction order of the cells 20 of each program 60 when reproducing the respective programs 60 (this reproduction order assigns a unique program number to each program 60) and the DVD 1 of each cell 20. The address which is the upper recording position, the number of the head cell 20 to be reproduced in one program 60, and the like are included.

In one PGC 61, in addition to the above-mentioned PGCI, substantial data such as video and audio is stored in the program 60.
(In other words, as a combination of the cells 20).

One title 62 is logically constructed by one or a plurality of PGCs 61. The title 62 is, for example, a unit corresponding to one movie in terms of video information, and is complete information provided by the producer to the viewer of the DVD 1.

One V is made up of one or more titles 62.
TS63 is logically configured.

Information corresponding to one VTS 63 shown in FIG. 2 corresponds to information included in one VTS 4 shown in FIG. That is, the DVD 1 has the VTS shown in FIG.
All information logically included in 63 is collectively recorded as one VTS 4.

Based on the logical format described above, the producer specifies the information segmented in the physical structure, thereby forming the video or music to be viewed by the viewer.

(2) DVD Audio Format Next, the recording format (physical recording format) of audio information (including music and audio information; the same applies hereinafter) on an audio DVD will be described with reference to FIG.

(2.1) Physical Format First, the physical format (physical recording format) on the audio DVD will be described with reference to FIG.

First, as shown in FIG. 3, the audio DVD 200 of the embodiment has a lead-in area LI at the innermost peripheral portion thereof and a lead-out area LO at the outermost peripheral portion thereof, and a lead-out area LO is provided between them. It is a volume space. The audio zone is always recorded in this. In this audio zone, the voice information has ID
A plurality of ATSs (Audio Title Se) having (identification) numbers
t) 203 (ATS # 1 to ATS # n) is divided and recorded. At the beginning of the audio zone, SAPPT (Simple Audio Play Pointer Table) 2 as playback control information for simple playback (2-channel playback, etc.)
04 is recorded. This SAPPT is recorded on all DVD discs having an audio zone.
The SAPPT 204 may be recorded in the lead-in area LI or the AMG 202 described later.

Just outside the lead-in area LI,
A UDF (Universal Disk Forma) having information for managing the format of a file recorded on the disc.
t) 201 is recorded, and UDF201 is followed by SAPP
T204 is recorded, followed by AMG (Audio Manager)
202 is recorded. However, UDF201, SAPP
T204 and other files are not necessarily arranged in this order.

The information recorded in this SAPPT 204 is the information necessary to reproduce the LPCM data on 2ch. The information recorded as the AMG 202 is recorded on the audio DVD 200, for example, a menu for prompting the user to select an item, information for preventing illegal copying, or an access table for accessing each title. This is management information relating to the entire audio information being processed.

One ATS 203 is an ATSI (Audio Ti
tle Set Information) 211 at the top and I
It is composed of a plurality of AOBs (Audio Objects) 210 each having a D number.

Here, a portion composed of a plurality of AOBs 210 is called an AOB set (AOBS). This AOB set is a substantial part of audio information.

ATSI recorded at the beginning of ATS 203
Reference numeral 211 denotes a plurality of cells (cells will be described later).
APGC as reproduction control information, which is various information related to a program chain that is a logical division of
Information such as I (Audio Program Chain Information) is recorded. In addition, the substantial part of the audio information is recorded in each AOB 210. One AOB 210 is composed of a plurality of cells 220 each having an ID number.

One cell 220 is a plurality of packed audio packs 230, or an audio pack and a real time information pack.
ck) 231. Audio pack 230
Is a pack of audio information to be recorded on an audio DVD, for example, a linear P.
It includes audio information digitized by CM or the like. The real-time information pack 231 includes text information, BPM (Beat Per Minutes), beat information, and the like.

In the above-described recording structure having the hierarchical structure shown in FIG. 3, each section is an audio DVD.
A producer of record information to be recorded in the 200 (hereinafter, simply referred to as a producer) can freely set and record according to the intention. By performing reproduction for each of these sections based on the later-described logical structure, various reproductions rich in change can be performed.

(2.2) Logical Format Next, a logical format (logical structure) in which information recorded by the physical divisions shown in FIG. 3 is combined will be described with reference to FIG.

The logical structure shown in FIG. 4 does not mean that the information is actually recorded on the audio DVD 200 by the structure. Audio information is recorded on the audio DVD only in the physical format shown in FIG. 3, and the information for reproducing this audio information is in the logical format shown in FIG. 4 and has the above-described SAPPT 204 and AMG 20.
2, it is recorded in ATSI211.

For convenience of explanation, starting from the lower hierarchy of FIG. 4, among the physical structures described in FIG.
The index 259 is formed by selecting one cell or a plurality of cells 220 and combining them. The index can also be used as a song number and is the smallest unit accessible by the user.

One track 260 is logically constructed by one or a plurality of indexes 259. The track 260 is an information unit corresponding to one piece of music. The user can select any track (song) and directly access it.

Here, the number of one cell 220 is treated as a cell ID number when the cell 220 is handled in the physical format shown in FIG. 3 (see FIG. 3).
Medium, cell ID # is shown. ), When handling in the logical format shown in FIG. 4, they are treated as cell numbers in the order of description in APGCI described later.

The track 260 (song) is an information unit including a plurality of cells, and is a set of cells having a certain common attribute or the like. That is, the attributes of all cells in the track are the same. Further, all cells included in the track are recorded adjacently in the same object.

One title 261 is logically constructed by combining one or a plurality of tracks 260. However, the title itself is not recognized by the user as a unit of access. Therefore, it is not possible to access any title by designating the title number.

In the audio DVD, the attributes of each track 260 constituting the title 261 can be independently defined in a maximum of 8 patterns. That is, the attributes as audio information such as the number of channels, the quantization method, and the sampling frequency may be changed for each track (song).

In the unit of this title 261, the above-mentioned A
PGCI is defined, and in the APGCI, the attribute of each track, the reproduction order of the cell 220 for each track 260 when reproducing each track 260, and each cell 220.
Address which is the recording position on the audio DVD 200, the first cell 2 to be reproduced in one track 260
It includes 20 numbers, a reproduction method of each track 260, and various commands.

The title 261 includes the APGCI mentioned above.
In addition to this, substantive audio information is included as a combination of tracks (songs) 260 (in other words, a combination of cells 220).

One title group 262 is logically constructed by one or a plurality of titles 261. Further, the title group 262 can be defined by the maximum unit that can be accessed by the user, and a maximum of nine title groups can be defined in one volume. The title group 262 includes one or a plurality of titles 26 collected based on a certain relation.
1 and all titles in the title group are continuously played. For example, a singer, a composer's music collection, etc. can be collected as one title group.

One volume 263 is logically composed of one or a plurality of title groups 262. The volume 263 is an information unit corresponding to one album (DVD).

The actual audio information included in one title shown in FIG. 4 is recorded in any one ATS 203 shown in FIG. 3 on the audio DVD.

Based on the logical format described above, the producer specifies the information divided in the physical structure, whereby the music listened to by the viewer is formed.

(3) Types of DVDs Next, types of discs on the DVD will be described. In the following description, regarding information recorded on a DVD, information including both video and audio like a movie may be referred to as “AV information”, and information on only the video portion is referred to as “video ( Or video) information ". In addition, information about only the audio part of AV information such as a movie and only audio information such as music is called “audio (or audio) information”.

As a DVD player for reproducing these various types of DVD discs, a video DVD player capable of reproducing AV information in the DVD video format (hereinafter referred to as "video player") and an audio in the DVD audio format. An audio DVD player (hereinafter referred to as "audio player") that reproduces information in various reproduction modes, and a simple audio DVD player (hereinafter referred to as "simple audio player") that reproduces LPCM audio information in the DVD audio format on 2ch. ), And a compatible DVD capable of reproducing both AV information in the DVD video format and audio information in the DVD audio format.
Player (hereinafter referred to as "compatible player")
There are four types. Each DVD player will be described in detail later.

As DVDs for recording AV information or audio information, there are four types of discs: a video DVD, a video DVD with audio navigation, an audio-only DVD, and an audio / video dual-use DVD. FIG. 5 schematically shows four types of DVD physical formats.

The DVDs have the same disc shape and information recording method (modulation method, track pitch, pit size, etc.), and only the information content is different.

(3.1) Video DVD The video DVD is shown at the top of FIG.
On this disc, video information such as a movie according to the DVD video format and audio information (that is, AV information) reproduced at the same time are recorded. Therefore, the lead-in area LI and the lead-out area LO
In the recording area between and, only the video zone exists, and the reproduction control information, the video information, and the audio information have a plurality of Vs.
The VMG is recorded by being included in the TS and including the management information of the VTS. As described with reference to FIG. 1, video information is recorded as a video pack and audio information is recorded as an audio pack.

This video DVD is a video player and a compatible player based on navigation information (information defining control information for reproduction, which will be described in detail later) included in the management information recorded in the VMG. Played by. However, since the navigation information in the DVD audio format is not recorded, it cannot be reproduced by the audio player.

(3.2) Video DVD with Audio Navigation Shown in the second row is a type of video disc called a video DVD with audio navigation. This video DVD with audio navigation is capable of playing back video information (including accompanying audio information) such as a movie in the DVD video format with a video player, and also recording navigation information in the DVD audio format, thereby providing audio It is a disc that allows a player to reproduce only audio information of VOB AV information in a VTS.
Also, a portion of AV information that allows the audio player to reproduce only audio information is called an audio play part.

Video DV with audio navigation
The recording format of D conforms to the DVD video format shown in FIG. 1, and is a VTS having a plurality of AV information in the video zone.
It is recorded in the form of. In addition to this, in the video DVD with audio navigation, the ATSI is recorded in front of the video zone as the audio zone as the ATS, which includes the reproduction control information necessary for reproducing only the audio information in the VTS in accordance with the DVD audio format. AMG is recorded as ATS management information. AOB, which is the substantial part of audio information, is not recorded in the ATS. That is, this AMG and AT
SI has a video DVD with audio navigation
Audio information included in each VTS (specifically,
Navigation information for reproducing an audio play part audio pack (see FIG. 1) in each VOB with an audio player is described.

SAP is added at the beginning of the audio zone.
PT is recorded. In this SAPPT, navigation information for reproducing LPCM audio information included in VTS on 2ch is described.

The video DVD with audio navigation is reproduced by the video player and the compatible player based on the navigation information recorded in the VMG. Also, based on the navigation information recorded in the AMG, the audio information of the audio play part is reproduced by the audio player in various reproduction modes according to the capability of the player. Also, based on the navigation information recorded in SAPPT, the LPCM information of the audio play part is reproduced on 2ch by the simple audio player.

(3.3) Audio Only DVD The third stage is an audio only DVD.
Only audio information is recorded on this disc, excluding some still images and text information. Therefore, only the audio zone exists in the recording area between the lead-in area LI and the lead-out area LO.
I and AOB are recorded as a plurality of ATSs, and these ATs
AMG including management information of S is recorded. Furthermore, SAPP is used in the lead-in area LI or audio zone.
T is recorded.

Further, each ATS includes one or more AOBs which are the substantial part of audio information. In this audio-only DVD, the audio information in the audio zone is reproduced in various reproduction modes by the audio player and the compatible player based on the navigation information recorded in the AMG in accordance with the capability of the player.
Also, based on the navigation information recorded in SAPPT, the LPCM information in the audio zone is reproduced on 2ch by the simple audio player. But DV
Since the navigation information in the D video format is not recorded, it cannot be reproduced by the video player.

(3.4) Audio / video dual-use DVD The bottom row of FIG. 5 shows an audio / video dual-use DVD.
Is called. An audio zone and a video zone are provided between the lead-in area LI and the lead-out LO. In the video zone, DVD as well as video DVD
According to the video format, a VTS including VMG, reproduction control information, and AV information (VOB) as a substance is recorded. SAPPT is recorded in the lead-in area LI or the audio zone.

Similar to the audio-only DVD, the audio zone conforms to the DVD audio format, and includes a plurality of ATSs (ATSs in the figure, which include SAPPT, AMG, reproduction control information, and audio information as substance).
# 1, # 2) are recorded. In addition, V in the video zone
An ATS (ATS # 3 in the figure) including only reproduction control information for reproducing only VOB audio information in the TS is also recorded. That is, D for both audio and video
In VD, AV in DVD video format
The information and the audio information in the DVD audio format are recorded in separate areas.

In the case of an audio / video dual-use DVD,
The AMG not only contains management information for all ATSs in the audio zone, but also contains management information for all ATSs and VTSs in the audio and video zones. The SAPPT also includes management information in which all ATSs and VTSs in the audio zone and the video zone are entwined. However, the management information is 2c of both zones.
Only for LPCM data that can be played back with h.

Here, the difference between the audio / video dual-use DVD and the video disk with audio navigation and the audio-only DVD is that the recording area of the disk is divided into an audio zone and a video zone, and the AV information and the DVD in the DVD-video format are recorded respectively. The fact that audio information in the audio format is recorded, and the AM recorded in the audio zone
The point is that G and SAPPT include management information entwined with all ATSs and VTSs in the disc.

More specifically, in the video disc with audio navigation, the audio information is
Based on the DVD video format, it is recorded in the VOB in a pack unit as multiplexed with video information. Then, APGCI, which is reproduction control information for reproducing the audio information recorded in the VOB, constitutes an ATS as ATSI, and only ATS manages these ATSs. The management information of the title in the video zone is not recorded in AMG. Similarly, the SAPPT describes navigation information about the audio play part of the video zone.

On the other hand, audio / video dual-use DV
In D, there are separate areas for recording audio information in the DVD audio format and AV information in the DVD video format. In the audio zone,
According to the DVD audio format shown in FIG. 3, the substantial part of audio information is recorded in each ATS as a plurality of AOBs. Furthermore, APGCI which is reproduction control information of audio information in each ATS is recorded in ATSI.
In addition to the TS, the ATS in which the reproduction control information of the audio information recorded in the VOB in the VTS of the video zone is recorded in the ATSI as the APGCI (the audio entity information is in the video area and is the navigation information AT)
Only SI exists as ATS. ) Two kinds of A
TS is recorded. That is, regardless of the zone, all ATS of the reproduction control information related to the reproduction of the audio information.
Are managed by AMG. In addition, all ATS, VT
Of the reproduction control information related to the reproduction of the LPCM audio information recorded in S, the information regarding the track that can be reproduced in 2ch is recorded in SAPPT.

On the other hand, in the video zone, AV information is recorded as a plurality of VTSs, and the reproduction control information of the AV information in each VTS is recorded as PGCI in the VTSI.
All of these VTSs are managed by VMG. On the other hand, AM
G also manages all reproduction control information relating to reproduction of AV information in the video zone.

Specifically, an audio only DVD,
In the case of an audio / video dual-use DVD, AMG is the general management information, and in the case of a video DVD, VMG is the main management information. In the case of a video DVD with audio navigation, AMG manages only the reproduction of audio information in the VOB by the audio player, and does not manage the video title.

In the case of an audio-only DVD and an audio / video dual-use DVD, SAPPT is, for example, a simple type or portable type audio player.
This is comprehensive management information for reproducing the LPCM audio information on 2ch. For video DVDs, SAPPT
Therefore, even if it is recorded by the LPCM, only the audio information is not reproduced by the simple player.
S for video DVD with audio navigation
APPT manages only the reproduction of the LPCM audio information (audio only title) of the audio play part in the VOB by the simple audio player, and does not manage the video title.

By adopting such a structure, optimum reproduction can be performed according to the capability of the reproducing apparatus, and compatibility with each disc and each reproducing apparatus can be realized.

(4) Title Reproduction Control Next, the title reproduction control will be described in more detail. Here, the title is a series of works (presentation) or works having a common reproduction mode, which are composed of substantive information such as AV information and audio information recorded on a DVD, and reproduction control information indicating a reproduction procedure thereof. Refers to a part of. As mentioned in the physical and logical formats of audio DVDs, the user does not directly instruct the player to select a title and start playback. The user
A title group consisting of one or a plurality of titles is selected and playback is started. However, the player determines what kind of title the instructed title group consists of from the navigation information in AMG and ATSI, and continuously reproduces each title to reproduce the title group. ing. Therefore DV
In the D player, the reproduction of the title is basic.
Therefore, a title in the DVD audio format and reproduction control of the title will be described by taking an audio / video dual-use disc as an example.

(4.1) Type of Title First, a title (title 261 in FIG. 4) in the DVD audio format is also called an audio title (hereinafter referred to as “AOTT (Audio Only TiTle)”) constituted by reproduction of audio information in the audio area. Call) and a video title configured by reproduction of AV information in the video area. Video titles are image-only titles (hereinafter also referred to as “AVTT (Audio Video TiTle)”) and image / audio dual-use titles (hereinafter “AVTT /
AOTT (Audio Video TiTle / Audio Only TiTle) "
Also called). In the case of the DVD video format, only the image-only title is available.

AOTT is a title in which only audio information is reproduced, and its substance information is composed of audio information recorded in AOB in the audio zone.

AVTT is a title in which audio information is always reproduced along with video information, and its substance information is composed of AV information recorded in a VOB in the video zone. In AVTT, reproduction of only audio information is not permitted, and reproduction with video information is essential.

AVTT / AOTT is a title that can reproduce only audio information, and can reproduce audio information as AV information together with video information (that is, can be called a dual-purpose title). In either case. The entity information is composed of AV information recorded in a VOB in the video zone.

Whether the AVTT / AOTT is reproduced as AV information or audio information depends on the capability of the reproducing apparatus. That is, in a playback device (audio player) that does not have the AV information playback capability, AVTT /
AOTT is reproduced only with audio information, and a reproducing apparatus (video player and compatible player) having AV information reproducing ability reproduces AVTT / AOTT together with video information and audio information.

By the way, two pieces of navigation information, that is, the navigation information for the audio player and the navigation information for the compatible player are separately recorded in the AMG. The navigation information for the audio player is an audio title (AOTT) composed of audio information in the AOB of the audio zone.
And an audio-only title search pointer describing navigation information for reproducing only audio information of a dual-purpose title composed of AV information in the VOB of the video zone, which is recorded in the audio-only title search pointer table (AOTT_SR). To be done. On the other hand, an audio title search pointer, which is navigation information for a compatible player capable of reproducing titles of all types, is recorded in the audio title search pointer table (ATT_SR). The navigation information will be described in more detail in the description of FIG.

When the audio / video dual-use DVD is played back by the video player, the VM in the video zone is
The AV information in each VTS is reproduced according to the navigation information for the video player recorded in G and VTSI.

Also, this audio / video dual-use DVD
When playing back with an audio player, refer to AOTT_SR in AMG in the audio zone, and
The audio information is reproduced according to the reproduction control information for the audio player recorded in I. There are two cases in which the audio information is reproduced by the audio player. One is AMG and A in the audio zone
ATSI and APGC which are navigation information in TS
In the case of reproducing the audio information in the AOB according to I, the other is AMG, ATSI, APGCI as in the case of the video disc with audio navigation.
In the case of reproducing the audio information recorded in the VTS in the video zone according to. In the latter case, an AV with an image is displayed in the video player for the same object.
The audio player reproduces only the audio information.

Furthermore, this audio / video dual-use DV
When D is reproduced by the compatible player, the ATT_SR which is the navigation information for the compatible player in the AMG in the audio zone is referred to, and the ATS
According to the reproduction control information recorded in I and VTSI,
The audio information in the audio zone and the AV information in the video zone are integrally reproduced.

All the titles in the audio / video dual-use DVD are managed by AMG, and are classified into any of the above three types of titles in the DVD audio format. Now, let us consider a case where an audio / video dual-use DVD having the logical format example shown in FIG. 6 is played back using a compatible player having both DVD audio format and DVD video format playback capabilities. This audio / video dual-use DVD
In, the volume is composed of seven title groups # 1 to # 7, and each title group is composed of one title. One title includes one or more tracks. Figure 6
, The left column is navigation information for compatible players (ATT_SR), the middle column is navigation information for video players (TT_SR), and the right column is navigation information for audio players (AOTT_S).
The image of R) is shown.

Since the titles # 2 and # 5 are AOTT, only the audio information recorded in the AOB in the audio zone of the audio / video dual-use DVD is reproduced when these titles are reproduced.

Since titles # 4, # 6 and # 7 are AVTT, the AV information recorded in the VOB in the video zone of the audio / video dual-use DVD is reproduced. Therefore, the video and audio are always reproduced.

The titles # 1 and # 3 are AVTT /
Since it is AOTT, the compatible player reproduces both audio and video based on the video and audio information recorded in the VOB in the video zone of the DVD for both audio and video. If an audio player that does not have the capability of reproducing video information is used, only audio information recorded in the VOB in the video zone of the audio / video dual-use DVD is reproduced for titles # 1 and # 3 (Fig. (See right column of 6). That is, AVTT / A
The OTT title is created so as to reproduce the recorded information by a method capable of maximizing the capacity of the reproducing apparatus for reproducing the DVD disc.

In order to eliminate confusion when playing back a title group, the AVTT uses other types of titles (AOTT,
It is promised that it is not possible to form a title group with AVTT / AOTT).

(4.2) Double management of VOB Next, the concept of PGCI and APGCI specified for VOB in the video zone of the audio / video DVD will be described. In the VOB, video information and audio information are recorded in a multiplexed form.
When the VOB is reproduced as AV information, it is reproduced according to PGCI, which is the same concept as in the case of the video DVD. Since the method of recording and reproducing the AV information on the audio DVD is adapted to the video format as described above, compatibility with the video player is maintained. On the other hand, when reproducing only the audio information in the VOB, reproduction is performed according to APGCI, which is specified independently of PGCI. This will be described with reference to FIG.

FIG. 7 shows the concept of a program for reproducing one VOB as AV information according to PGCI and for reproducing only audio information according to APGCI. In FIG. 7, VOB includes video data, sub-picture data, and audio data. When this VOB is reproduced as AV information, its reproduction control is performed based on PGCI. P
In GCI, the VOB is composed of 6 video cells # 1- # 6.
Video cell # 1 with video cell # 1
To video program # 2 by video cells # 2- # 4.
And video cell # 6 constitutes a video program # 3. When AV information is reproduced by a video player or compatible player such as AVTT / AOTT, reproduction is performed according to such PGCI.

On the other hand, when the audio player reproduces only audio information from the same VOB, APGC
Playback is performed according to I. Each audio program defined by APGCI is composed of one or more audio cells. Here, even for the same object (VOB), the audio cell can be defined (independently) differently (independently) from the video cell (of course, it can also be defined so as to match). That is, the start position and end position of each audio cell can be set independently of any video cell. Also, the reproduction order of audio cells defined by APGCI can be defined independently of the reproduction order of video cells defined by PGCI.

In the example of FIG. 7, audio program # 1
Is composed of audio cells # 1 and # 2, and the audio program # 2 is composed of audio cell # 3. The APGCI includes information such as the recording position and reproduction order of the audio cells included in these audio programs, and the audio information is reproduced based on this.

As described above, the reason why the audio cell can be defined independently of the video cell is to manage the audio information independently of the AV information. By doing so, it becomes possible to perform time management and the like independently of the AV information when only the audio information in the VOB is reproduced. Further, of the audio information included in the AV information, it is possible to reproduce only a meaningful portion even if only the audio information is reproduced. Of course, it may be defined as the same cell.

(4.3) Title Search Pointer Next, reproduction of each of the above-mentioned titles using a title search pointer in an audio / video DVD will be described with reference to FIGS. 6 and 8.

FIG. 8 shows an example of navigation information of an audio / video dual-use DVD. As described above, the audio / video dual-use DVD has a video zone according to the DVD video format and an audio zone according to the DVD audio format. Information that can be reproduced from the audio / video dual-use DVD is AV information (video information with audio) such as a movie and audio information. Then, navigation information for preventing confusion and inconsistency when each information is reproduced by various players is separately recorded on the audio / video DVD for each player.

(4.3.1) AMG, ATSI, Title Search Pointer Table In FIG. 8, the audio / video dual-use DVD has an audio zone and a video zone. Audio zones are AMG202 and ATS # 1, ATS # 2, ATS #
ATS # 1 consists of ATSI211 and AO.
And B210 and ATS # 3 is ATSI212.
Composed of only. The video zone is composed of VMG3, VTS # 1 and VTS # 2, and VTS # 1 is
It is composed of a VTSI 11 and a VOB 10.

The AMG 202 includes AMG (AMG Information) 240 which is a substantial part of navigation information. The AMGI 240 includes an AMGI management table 241, which contains information such as the file size and recording address of the AMGI 240, an ATT search pointer table 242, and an AOTT search pointer table 243.
including. Here, ATT is an audio-only title (AOTT) consisting of audio information only, A
A video-only title (AVTT) composed of V information and a video / audio dual-use title (AV) composed of AV information.
TT / AOTT).

Here, the search pointer is a pointer indicating the recording position on the DVD of the reproduction control information (here, APGCI and PGCI) of each title. As described above, each title includes audio information, A
It is composed of substantive information such as V information and reproduction control information for reproducing the substantive information in combination. This reproduction control information is recorded in the ATSI in the ATS or the VTSI in the VTS. The search pointer is a pointer indicating the recording position in the ATSI or VTSI of the reproduction control information of each title. The navigation information is information for managing reproduction of each title, and is a concept including the search pointer in this embodiment.

The ATT search pointer table 242 is
9 is a table describing navigation information when each title of the audio / video dual-use DVD is reproduced by a compatible player. On the other hand, the AOTT search pointer table 243 stores the audio / video dual-use D
6 is a table describing navigation information when each VD title is reproduced by an audio player. In addition, the ATT search pointer table 242 and the AOTT
There is a 1: 1 correspondence with the search pointer table 243, and the number of search pointers described in the ATT search pointer table matches the number of all titles included in the audio / video dual-use DVD. For example, as shown in FIG. 6, the audio / video dual-use DVD has a total of 7
If the number of titles is included, the search pointers corresponding to the seven titles are described in the ATT search pointer table 242, and seven searches are performed in the AOTT search pointer table 243 regardless of the type of the title. A frame for describing the pointer is prepared. The frame of each table corresponds to 1: 1.

(4.3.1.1) ATT_SRP Audio title search pointer (ATT_SRP)
Is navigation information used when reproducing an audio / video dual-use DVD with a compatible player. Therefore, when the audio / video dual-use DVD is set, the compatible player refers to the ATT_SRP to reproduce each title.

The example of the navigation information shown in FIG. 8 corresponds to the example of the audio / video dual-use DVD shown in FIG. 6, and the titles # 1 and # 3 are video / audio dual-use titles (AVTT / AOTT) and title #. 2, # 5 is Audio Only Title (AOTT), Title # 4,
# 6 and # 7 are image-only titles (AVTT).

As described above, audio / video dual-use DVDs have three types of titles (AOTT, AVTT /
AOTT, AVTT) can be recorded. Therefore, for audio / video dual-use DVD, AMG AT
Search pointers for all three types of titles (AOTT, AVTT / AOTT, AVTT) are described in the T search pointer table 242.

However, the title search pointer 245 that is actually written in the ATT search pointer table 242 of FIG. The title search pointer for AVTT / AOTT) is described as an image-only title search pointer (AVTT_SRP) (actual description is shown in parentheses in the table of FIG. 8). this is,
For compatible players, a video / audio dual-use title (AVTT / AOTT) and an image-only title (AVT)
This is because it is not necessary to distinguish T). That is, since the compatible player has the reproduction capability of the DVD video format and reproduces all the video / audio dual-use titles as AV information, it is not necessary to distinguish it from the video search pointer (AVTT_SRP) in the navigation information. is there. Therefore, with respect to titles accompanied by image reproduction, all title search pointers (AVT
T_SRP) in a common format.

Therefore, as can be seen by comparing the left column of FIG. 6 with the audio title search pointer table 245 of FIG. 8, in the ATT search pointer table 242 which describes the navigation information for the compatible player, the image-only title (title # 4, 6, 7) and image / audio dual-use titles (titles # 1, 3), an image-only title search pointer (AVTT_SRP) is described, and an audio-only title (title #
For 2, 5), the AOTT search pointer (AOTT
_SRP) is described. The compatible player refers to this table 242 and, as shown in the left column of FIG.
Titles # 1, 3, 4, 6, and 7 are reproduced as AV information, and titles # 2 and # 5 are reproduced as audio information.

(4.3.1.2) AOTT_SRP On the other hand, the AOTT search pointer table 243 describes the navigation information for the audio player. Therefore, when the audio / video dual-use DVD is set, the audio player refers to the AOTT search pointer table 243 to perform reproduction.

In this table, audio title (AOTT) and audio / video dual-use title (AVTT / A
A search pointer for OTT) is described. Since the audio player does not have the AV information reproducing capability, it is not necessary to describe the search pointer for the image-only title (AVTT). However, the search pointer actually written in this table is AOTT search pointer (A
OTT_SRP) only. For the audio player, all that is required is information about whether or not the title can reproduce only audio, and the audio title (AOTT) and the image / audio dual-use title (AVTT / AO).
There is no need to distinguish TT). Therefore, the audio only title search pointer table (AOTT_SR
PT) 243, audio title (AOTT)
AOTT search pointer (AOTT_SR) without distinguishing between video and audio titles (AVTT / AOTT)
P) is described in a common format.

Therefore, a title for both video and audio (AVTT
/ AOTT), the image-only title search pointer (AVTT_SRP) is described in the ATT search pointer table 242, but the audio-only title search pointer (AOTT_SRP) is described in the AOTT search pointer table 243. Become.

Regarding the image-only title (AVTT), only the frame for writing the title search pointer is prepared, but no substantial information is described, or this title does not have AOTT_SRP (only voice Can not be reproduced) is described. AOT
This is because the T search pointer table 243 describes the navigation information for the audio player and the audio player cannot reproduce the AV information. Therefore, the audio player determines that this title cannot be reproduced and ignores this description.

With reference to the AOTT title search pointer table 243 described as above, the audio player performs the reproduction shown in the right column of FIG. That is, the image-only titles # 4, 6, 7 are ignored, and the titles # 1, 2,
Play audio information for 3 and 5.

(4.3.2) VMG, VTSI and title search pointer VMG3 are VMs which are the actual parts of the navigation information.
GI (VMG Information) is included. VMGI is VMG
V including information such as file size and recording address of I
It includes an MGI management table 250 and a title search pointer table (TT_SRPT) 251. The title search pointer table 251 is a table describing navigation information about the video player. Therefore, the video player refers to the title search pointer table (TT_SRPT) 251, and reproduces the title in accordance with the procedure determined by the conventional video format. Therefore, there are two types of titles, namely, an audio / video dual-use title (AVTT / AOTT) and an image-only title (AVTT), but a title search pointer table (TT_SRPT) 251.
TT_SRP without distinguishing these two
Will be described as.

As described above, the audio / video dual-use DV
In D, the optimum navigation information is prepared for each of the audio player, the video player, and the compatible player, and recorded as three separate title search pointer tables. As a result, optimum reproduction can be performed according to the capabilities of each reproduction device.

(4.4) Structure of Search Pointer Table Next, the structure of the search pointer table will be described in more detail.

(4.4.1) ATT_SRP, AOTT_S
The RP and TT_SRP ATT search pointer table 242 includes ATT search pointer information 244 including information such as the number of ATT search pointers and a plurality of ATT search pointers 245. In FIG. 8, the parentheses of each ATT search pointer indicate the type of search pointer actually described as the search pointer. As described above, the search pointer written in the ATT search pointer table 242 is either AOTT_SRP or AVTT_SRP.

AOTT search pointer table 243
Similarly includes AOTT search pointer information 246 including information such as the number of AOTT search pointers, and a plurality of AOTT search pointer information 246.
And a T search pointer 247. In FIG. 8, each A
The bounds of the OTT search pointer also indicate the type of search pointer actually described as the search pointer.
As described above, the search pointers written in the AOTT search pointer table are all AOTT_SRP.

The positions of the ATT search pointer and the AOTT search pointer designating the same title on the respective search pointer tables must be the same. That is, the ATT search pointer on the ATT search pointer table 242 and the AOTT search pointer table 24
3 corresponds to the AOTT search pointer on the 3: 1 basis, and ATT_SRP # 1 and AOTT_SRP # 1 specify the same title.

The TT search pointer table 251 similarly includes TT search pointer information 252 including information such as the number of TT search pointers and a plurality of TT search pointers 2.
54 and.

The ATT search pointer 245 and the AOTT search pointer 247 have a 1: 1 correspondence, but there is not necessarily a 1: 1 correspondence between the two and the TT search pointer. However, the TT search pointer is also the same as the ATT search pointer and the AOTT search pointer in that the playback procedure is indicated by indicating the PGC that logically configures the target title.

(4.5) Playback method of each title Next, referring to FIGS. 6 and 8, audio / video dual-use D
A method of reproducing each of the three types of titles that can be recorded in the VD will be described by classifying the titles for each player capable of reproducing.

(4.5.1) Audio Only Title (AOTT) Playback Method AOTT can be played back by an audio player and a compatible player. AOTT is a title for audio information reproduction. Further, the main playback modes (functions) of audio-only titles, which are to be realized or related to the present invention, are as follows. However, both video and audio titles (AVTT / AOT
In T) reproduction by an audio player, a reproduction mode that can be realized is also included.

Multi-channel playback: In the DVD audio format, up to 8 channels of LPCM audio information in the video zone are possible. Up to 6 channels are possible for discrete multi-channel. In this case, for each channel, 3 front channels + 2 rear channels +
11 patterns can be set from the combination of subwoofers, and 24 patterns can be set from the combination of the discrete multi-channel part and the signal for 2ch reproduction, a total of 24 patterns. Up to 6 channels of LPCM audio information in the audio zone are possible, and 21 patterns are possible in each combination of 3 front channels + 2 rear channels + subwoofer.

2ch reproduction: LPCM audio information of 2ch or less is reproduced as it is. The multi-channel LPCM audio information of the video zone is 2 for CH0 and CH1.
Play only ch, audio channel multi-channel L
The PCM audio information is downmixed to 2ch and reproduced as 2ch based on the downmix coefficient defined separately for each track.

Audio selection: 2 for DVD
Audio information of three different playback modes is defined as one title and can be selected by the user. This function is called audio selection. Specifically, the user can select different reproduction modes of 2ch and multi-channel for the same song. As a selection other than 2ch and multi-channel, it is also possible to select and listen to audio information recorded in LPCM and audio information recorded in another coding method (compressed voice, 1-bit voice, etc.) for the same song. .

Audio coding mode (linear P
CM, Dolby AC3, MPEG audio, DTS,
SDDS): Indicates the type of encoding method for recording audio information. The LPCM, which is also used for CDs, is well known. The other is one of the compression encoding methods.

Multi-channel type: Indicates the type of multi-channel recording of LPCM in the DVD audio format. In case of Type 1, up to 6 channels can be set. The relationship between each channel and speaker layout can be set in a combination of 3 front channels + 2 rear channels + subwoofer.

Channel assignment (number of channels,
Speaker layout): Indicates the number of channels, the relationship between each channel and the output speaker layout, and the relationship between each channel and the channel group in the multi-channel LPCM. For example, when the signal of 3ch is recorded, CH0 is Left Front speaker: The signal output from the left front is included in channel group 1, CH1 is Ri.
ght Front speaker: A signal output from the front right, included in channel group 1, CH2 is Surround speaker:
It is a signal output from the rear, and is included in the channel group 2. As mentioned above, when the multi-channel type is type 1,
It is possible to set 21 patterns in a combination of front 3 channels + rear 2 channels + subwoofer, and the channel assignment information indicates which combination of these 21 patterns.

Multi-stream: Audio entity information recorded in the audio area in the DVD audio format is recorded as the only audio stream in the AOB, but audio entity information recorded in the video area is VOB. In addition to the video stream, each pack is multiplexed and recorded. Also VOB
Can multiplex a plurality of audio streams within a limited transfer rate range. For example, 2c
h / LPCM audio stream and multi-channel / LPCM audio stream are multiplexed or 2ch
It is also possible to multiplex the / LPCM audio stream and the AC-3 compressed audio stream. The user can select two audio streams having different reproduction modes by designating an audio selection value.

(4.5.1.1) In the case of audio player First, a method in which the audio player reproduces AOTT will be described. As described above, the audio player uses the AOTT_SRPT243 as the navigation information.
See only. Therefore, when trying to reproduce the title # 2, the AOTT_SRP # 2 is referred to and the ATS number (ATS # 1 in this case) including the title and the title number in the ATS are read (see FIG. 8, " P
2A (1) ”). Next applicable ATS
Referring to ATSI 211 of # 1 (see FIG. 8, “P2A
(Refer to the path shown in (2))), and the A (Audio) PGC corresponding to the title from the title number in the previous ATS.
Read I. Therefore, during playback, AOTT_SRP #
The audio information is reproduced by reproducing the audio pack 43 in the AOB 210 according to the APGCI specified by 2 (see the path indicated by “P2A (3)” in FIG. 8).

(4.5.1.2) Compatible Player Next, a method for the compatible player to reproduce the AOTT will be described. The compatible player refers to ATT_SRPT242 as navigation information. Therefore, if you try to play title # 2, ATT_SR
Refer to P # 2, because it is AOTT_SRP,
Recognize that the title is AOTT. After that,
Similar to the audio player, the ATS number (ATS # 1 in this case) including the title and the AT
The title number in S is read (see "P2C" in FIG. 8).
(See the path shown in (1)). Next applicable ATS # 1
8 is referred to (see the path indicated by “P2C (2)” in FIG. 8), and the APGCI corresponding to the title is read from the title number in the previous ATS. Therefore, during playback, the APGC specified by ATT_SRP # 2
The audio information can be reproduced by reproducing the audio pack 43 in the AOB 210 according to I (see the path indicated by “P2C (3)” in FIG. 8).

(4.5.2) Image Dedicated Title (AVTT) Next, the reproduction path of the image dedicated title will be described. The image-only title can be played back by a video player and a compatible player.

(4.5.2.1) Video Player The video player uses TT_S as navigation information.
The RPT (Title Search Pointer Table) 251 is referred to, and processing is performed according to the reproduction procedure of the video format. Therefore, first, the title search pointer table 251 of the VMG3 is referred to. Here, the description position of the search pointer on each title search pointer table 242, 243 of the corresponding title on the audio navigation and the title search pointer table 251 of the VMG3.
The description position of the above title search pointer does not have to correspond to 1: 1. That is, the contents and order of the AMGI ATT search pointer table 242 and the VMGI TT search pointer table 251 can be independently defined. However, to avoid confusion,
VMGI is displayed in the title search pointer table 251.
If there is no title corresponding to the TT_SRP254 of, the frame will be described in the TT search pointer table in principle. Therefore, the title number is
May differ as indicated by. That is, although the audio / video dual-use DVD of the example shown in FIG. 6 has seven titles, the video player is title # which is AOTT.
2 and # 5 do not play, so the remaining 5 without them
Titles (Titles # 1, # 3, # 4, # 6, #
TT_SRP for 7) is described in the title search pointer table 251. Therefore, TT_SRP # 1- # in the title search pointer table 251.
5 are titles # 1, # 3, # 4 and # shown in FIG. 6, respectively.
6 and # 7.

The TT_SRP 254 indicates a PGC that logically configures the target title. Therefore, the video player reads the VTS number (VTS # 1 in this case) including the title and the title number in the VTS from this search pointer (see "P3V in FIG. 8").
(See the path shown in (1)). Next applicable VTS # 1
VTSI 11 (see the path indicated by “P3V (2)” in FIG. 8), and the PGCI corresponding to the title is read from the title number in the previous VTS. Therefore, the video player acquires this PGCI and reproduces the title as AV information using the video pack, audio pack, etc. in the VOB (FIG. 8, “P3V”).
(See the path indicated in (3)).

(4.5.2.2) In the case of compatible player Next, the compatible player displays the image-only title (AV
A path for reproducing (TT) will be described. The compatible player uses ATT_S as navigation information.
Only RPT242 is referenced. Therefore, this ATT_S
By referring to RP # 4 and because it is AVTT_SRP, it is recognized that the title is an image-only title. As described above, it does not match the title number in the video player. However, after that, the same as reading from TT_SRPT by the video player, ATT_
The VTS number (VTS # 1 in this case) including the title and the title number in the VTS are read from the SRP 245 (see the path indicated by "P4C (1)" in FIG. 8). Next, referring to the VTSI 11 of the corresponding VTS # 1 (see the path indicated by “P4C (2)” in FIG. 8),
The PGCI corresponding to the title is read from the title number in the previous VTS. Therefore, the compatible player also acquires this PGCI and uses the video pack, audio pack, etc. in the VOB to set the title A
It is reproduced as V information (see the path indicated by "P4C (3)" in FIG. 8).

(4.5.2.3) Audio Player Next, the case of an audio player will be described. The audio player uses AOTT as navigation information.
Only _SRPT 243 is referenced. Therefore AOTT_S
Although PR # 4 is read, since it is written that there is no corresponding AOTT here, the reproduction is stopped.

(4.5.3) Video / audio dual-use title (AVT
In the case of (T / AOTT), the image / audio dual-use title is reproduced by all players of the audio player, the video player, and the compatible player. Therefore, description will be made in this order.

(4.5.3.1) In the case of audio player First, a method in which the audio player reproduces the image / audio dual-use title will be described. The audio player refers only to AOTT_SRPT243 as navigation information. Therefore, referring to AOTT_SRP # 1, the ATS number including the title (in this case,
ATS # 3) and the title number in the ATS are read (see the path indicated by "P1A (1)" in FIG. 8). Next, refer to the ATSI 212 of the corresponding ATS # 3 (see FIG. 8,
Refer to the path indicated by "P1A (2)") and the APGCI corresponding to the title from the title number in the previous ATS.
Read out. However, this ATS # 3 does not include actual audio data, and this APGCI is VTS # 1.
5 shows a reproduction procedure for the VOB 10 of FIG. Therefore, at the time of reproduction, only the audio information is reproduced by reproducing only the audio pack 43 in the VOB 10 according to the APGCI (see the path indicated by “P1A (3)” in FIG. 8).

(4.5.3.2) Video Player Next, a method for the video player to reproduce a title for both audio and video will be described. As described above, the video player performs processing according to the reproduction procedure of the video format regardless of the type of disc. Therefore, first of all, VM
The G3 title search pointer table 251 is referred to. The title number here is # 1, which matches the title number on the audio navigation. Subsequent paths are the same as those in (5.2.1), so description thereof will be omitted. (Refer to the paths indicated by "P1V (1), (2), (3)" in Fig. 8)

(4.5.3.3) Compatible Player Next, a method for the compatible player to reproduce a video / audio dual-use title will be described. The compatible player refers only to ATT_SRPT242 as the navigation information. Therefore, the ATT_SRP # 1 is referred to and the AVTT is recognized. After that, in the same way as when the video player reads from TT_SRPT251, the VTS number (VTS # 1 in this case) and the VTS that include the title are also read from ATT_SRP245.
Read out the title number in (see "P1C" in Figure 8).
(See the path shown in (1)). Subsequent passes are the same as in the case of the video player, and therefore the description thereof is omitted (see FIG. 8,
"Refer to the paths indicated by P1C (2) and P1C (3)."

As described above, by having not only the navigation information for video and the navigation information for audio, but also the information for integrating them or the information for associating them with each other, the titles having different reproduction modes are different. It is possible to eliminate the contradiction and confusion when various types of players having different reproduction capabilities are reproduced.

(5) Title Management Information As described above, the user selects a desired title group or a track included therein and gives an instruction for reproduction. The playback device automatically selects a title or a title including the instructed track, which constitutes the instructed title group, according to the capability of the playback device, and starts playback.

Further, in the DVD audio format, when an audio title (AOTT) or image / audio dual-use title (AVTT / AOTT) is reproduced by an audio player, audio information can be selected. Regarding the structure for realizing this function, its navigation information will be described first with reference to FIG. FIG. 9 shows the ATS shown in FIG. 3 or FIG.
3 is a block diagram showing the structure of 203 in detail. FIG.

(5.1) ATSI ATS 203 has ATSI 211 as navigation information and audio entity information (AOTT) as described above.
AOTT_AOBS as a set of _AOB 210)
210 'and A as backup for ATSI 211
It is composed of TSI_BUP 213.

As shown in FIG. 9, the ATSI 211 is composed of ATSI_MAT 270 as management information and ATS_PGCIT 271 which is a table of reproduction control information.

(5.1.1) ATSI_MAT of the ATSI_MAT management information describes attribute information about various table addresses, audio entity information, downmix coefficients, and the like.

(5.1.1) Attribute Information The attribute information contains information about each AOTT_AOB regarding the AOTT_AOB 210 included in the AOTT_AOBS 210 '.
For each 210, the coding method, sampling frequency, number of quantization bits, number of channels, multi-channel type, channel assignment, etc. are described. AT like this
When the AOTT_AOBS 210 ′ is present in S203, the plurality of types of audio information are different from each other in the AOTT_AOBS.
As B210, it will be recorded separately in AOTT_AOBS210 '. In addition, ATS203
Some of them do not have AOTT_AOBS 210 ', and the attribute information in this case includes VOB (AOTT_VOB, AVTT_VOB) 1 recorded in the video zone.
Attribute information regarding an audio stream of 0 is described. Therefore, when a plurality of types of audio information are recorded in the VOB 10 as a plurality of streams in the VOB 10, the stream number and its attribute information are described here for each stream.

(5.1.2) ATS_PGCIT ATS_PGCIT 271 is a table 275 of the search pointer (ATS_PGCI_SRP) 275 for searching the reproduction control information corresponding to the ATS_PGCITI 272 and the title, which describes information on the entire reproduction control table, and the reproduction control information (ATS_PGCI). ) 276 itself is composed of the table 274.

(5.1.2.1) ATS_PGCI_SRP In the present invention, a plurality of different types of audio information are recorded on the disc, and in principle, audio information having a common recording target is treated as the same work and the same song. As shown in FIG. 10 and FIG. 11, the PGC 300 as management information is introduced, and one title 261 is created.
Is associated with multiple types of audio information of different types. Although details of the audio information management method using the PGC 300 will be described later, in the present invention, when associating a plurality of audio information of different types with one title 261, a logical structure in which the PGC 300 is divided into blocks is used. Have

The reproduction control information of the audio substance information managed by the PGC 300 is ATS_PGC.
I276, and ATS_PGCI_SRP275 has ATS_PGCI27 corresponding to each title 261.
The information for searching 6 is described. For example, each ATS_
Each PGCI 276 describes whether or not the PGC 300 is an entry. The entry is information indicating that it is the PGC 300 that represents the PGC block. In addition, ATS_PGCI_SRP275 has A
The title number in the TS203, whether or not a PGC block is formed, the relationship in the PGC block (beginning, in block, last), block type, number of channels, coding method, start address of ATS_PGCI276, etc. are described. It

As described above, at the start of title reproduction, the AOTT_SRP 247 of the AMG 202 has the ATS number and the ATS title number, and the corresponding ATS_P.
Although it has been described that the GCI276 is acquired, the ATS_PGCI_SRP275 of the ATS 203 having the corresponding number is acquired.
, The ATS_PG corresponding to the ATS title number
The location where the CI276 is recorded can be known.

If a plurality of audio information correspond to one title, a plurality of ATS_PGCI_SRP275 having the same ATS title number will exist. In this case, the judgment is made together with other information (block type, number of channels, coding method), the optimum PGC 300 is selected, and reproduction is started.

(5.1.2.2) ATS_PGCI Following the table of search pointers, ATS_PGCI 276 as reproduction control information corresponding to each title is arranged to form a table.

In the present invention, in order to manage the audio substance information by the PGC 300, as shown in FIG. 10 or 11, segment information called a program 301 is used. The program 301 is information that divides the above-described cell 220 into reproduction units such as one song, and is information corresponding to the track 260. Therefore, the PGC 300 corresponding to the title 261 manages one or a plurality of programs 301, and this information is ATS_PGCI276.
Described in.

One ATS_PGCI 276 is a PGC.
Information about the entire 300 (ATS_PGC_GI) 29
0 and each program 301 that constitutes the PGC 300
Table ATS_PGIT29 that collects information about
1. Further, a table ATS_C_PBIT29 that collects information about each cell 220 that constitutes the program 301.
It consists of two.

(5.1.2.2.1) ATS_PGC_GI In the ATS_PGC_GI 290, the number of programs, the number of cells, the PGC reproduction time, the start address of each table following this information, etc. are described as the information regarding the entire PGC 300.

(5.1.2.2.2) ATS_PGIT Following ATS_PGC_GI290, this PGC300
ATS_PG related to the program 301 that constitutes the
I is arranged in the order of reproduction by the number of programs, and table A
It forms TS_PGIT291. One ATS_
The PGI includes information for continuous reproduction, information for specifying the attributes of audio substance information (AOB) reproduced by this program, information for specifying a downmix coefficient, a cell number corresponding to the beginning of the program, and a start. PT
Information such as S and program reproduction time is described.

The information for specifying the attribute of the ATS_PGI is specified by specifying the attribute information of the audio substance information specifically written in the ATSI_MAT 270 as an attribute number and making them correspond to each other. The detailed attribute information of the program can be obtained. Since the attribute number can be defined for each program, the DVD audio format has a structure in which the attribute can be changed for each song.

However, ATS_PGCI_SRP275
Among them is information about attributes. ATS_PGCI_
The attribute information described in the SRP 275 is information for selecting different types of audio substance information, and is only the attribute information common to each program 301. Conversely, even if the attribute can be freely set for each program, the encoding method must be common. If a PGC block is built, PGC300
All of the programs 301 in the above must comply with the restriction that the number of channels should be standardized to 2 ch or less or 3 ch or more.

The cell number corresponding to the beginning of the program makes it possible to know which cell 220 this program 301 corresponds to.

(5.1.2.2.3) ATS_C_PBIT ATS_C_PBIT2 is followed by information ATS_C_PBI relating to cells constituting the PGC 300, arranged in the reproduction order by the number of cells ATS_C_PBIT2.
92 is formed. In one ATS_C_PBI, an index number, cell type, start address, end address, etc. are recorded. Title 26 for the first time here
The address on the disc of the audio substance information corresponding to 1 can be known.

For example, a title group 2 in which a user exists
Suppose that the third song of 62 is instructed. It is assumed that the title group 262 is composed of one title 261. Acquisition of the ATS_PGCI corresponding to the title 261 is as described above. Program # 3 because it's the third song
The third ATS_PGIT 291 corresponding to is read, and the leading cell number #n therein is acquired. Program 301
Since it was found that (# 3) starts from cell 220 (#n), it reads the nth ATS_C_PBI, acquires the start address described here, jumps to it, and starts playing the third song. Will be done.

(5.2) Audio Information Recording Method Next, how this embodiment records a plurality of different types of audio information will be described.

As described in the description of the physical structure of each audio disc, the ATS 203 and VTS 3 respectively include the AOB 210 as audio substance information and the VOB 10 as AV substance information. Furthermore, each of the substantive information reproduced as an audio title is
Also referred to as TT_AOB and AOTT_VOB. Multiple AO
A group of TT_AOB and AOTT_VOB is AOTT_AOBS and AOTT_VO, respectively.
It is BS.

[0165] The plural kinds of different audio information are
Specifically, they are classified into the following three types.

A. Multiple audio information with different recording status (for example, normal recording and binaural recording, recording in front of hall and recording at S seat, one-point recording and recording with multi-microphone, etc.) b. A plurality of audio information with different encoding methods (for example, LPCM and MPEG, Dolby AC-3, SDDS, DT
S, etc.) c. A plurality of audio information recording states, encoding systems, and reproduction modes having different reproduction modes (the number of channels is 2 ch or less or 3 ch or more) can be independently determined. However, as a general rule, the plurality of different types of audio information to be recorded here are audio information having a common recording target and should be treated as the same work (title) and the same song (track). These different types of audio information are recorded on the disc in two different ways.

(5.2.1) Even in the AOTT_VOBS DVD audio format having a plurality of audio streams, the recording method of audio information when accompanied by image information is compatible with the DVD video format in order to be compatible with the DVD video format. The same recording method was used. Therefore, when recording multiple audio information of different types together with image information,
The same entity information (AOTT_VOB) is multiplexed and recorded as another stream. As described in the video format, the VOB 10 defines image information, audio information, sub-picture information, and the like as separate streams, and each pack unit (2
048 bytes) and is multiplexed in this unit and recorded on the disc as one system stream.

Since up to eight types of audio information can be defined, it is possible to record different types of audio information as separate streams having different stream numbers. When such a recording method is adopted, it can be compatible with the DVD video format. Further, there is an advantage that the type of audio information can be easily changed only by changing the stream processed by the playback device during playback. Further, when viewed as a video title, since it is recorded in one entity information, it can be naturally treated as the same title and the same track. Therefore, it is possible to properly record a plurality of audio information such as the number of channels without causing confusion to the user.

However, such a stream multiplexing method is not suitable for an audio format.
In the DVD disc, there is a limitation that the total data transfer rate of all streams must be 10.08 Mbps or less. Therefore, two streams as shown in Table 1 below cannot be multiplexed.

[0170]

[Table 1]

For audio DVD, uncompressed LPCM
Since it is necessary to record audio without fail, the required data transfer rate is high when the sampling frequency is high or when the number of channels is large. Therefore, when mainly recording a plurality of non-compressed LPCM voices with audio information as the main component, this stream multiplexing method is inappropriate.

Further, the audio format is required to have a simple recording process, with emphasis on the function for recording and the consistency with the studio equipment currently used. In the case of having a structure of multiplexing a plurality of variable rate streams such as a video stream like the DVD video format, management information must be placed in the data. In addition, this management information has a structure in which address information relating to data for several minutes before and after is described, and when considered as a recording device, it cannot be recorded on the disc unless data for several minutes before and after is prepared. Therefore, there arises a problem that a simple recorder cannot be configured. In addition to the current studio equipment, a new authoring device is required. There is also a problem.

(5.2.2) Multiple blocks AOTT_AO
In the case of recording only BS audio information, solving the above-mentioned problems is a more important issue, and a structure required as an audio format is adopted. Therefore, it is assumed that only one type of audio stream is recorded in one substance information (AOTT_AOB), and when recording a plurality of different types of audio information, another substance information (AOTT_AOB) is recorded in another area on the disc. It was decided to record separately. By doing this, the data transfer rate of one audio information is
If it is 10.08 Mbps or less, the structure is such that any number can be recorded. Also, since only one type of audio stream is recorded, the audio information is uncompressed LPC.
If the data has a fixed rate like M, it is not necessary to put management information in the data, and the processing at the time of recording becomes simple.

Further, it is not necessary to reproduce the audio information of 2ch and the audio information of multi-channel at the same time, and it is not necessary to switch them instantly. Therefore, when separately recorded into different entity information, the processing involved in switching at the time of reproduction becomes complicated, but it can be said that this is not a big problem.

However, in this case, a mechanism for handling a plurality of entity information as the same title is required. Also, it is necessary to uniformly handle audio information recorded as a plurality of streams in AOTT_VOB by the same mechanism.

(5.3) Audio Selection As described above, there are roughly two methods for recording a plurality of different types of audio information, but each has its own problems. Therefore, the present invention solves the problems in each method by allowing the reproduction control information to have the following logical structure and enables appropriate audio selection. Here, audio selection refers to switching a plurality of different types of audio information recorded in different areas on the disc, which need to be treated as the same title.

First, when a method of separately recording a plurality of different types of audio information in different areas on the disc as different substance information (AOTT_AOB),
As shown in FIG. 10, a recording method of audio substance information (in the case of FIG. 10, recording mode: 2 ch and multi ch)
Each of a plurality of different audio substance information (in this case, the audio title, AOTT_AOB210
For reproduction of (AOB # 1, AOB # 2)), the cells 220 constituting each AOB 210 are divided into units of the program 301 as the second division unit. Further, each program 301 is identified by a program number (# 1, # 2, # 3, ...) As second division information. The program 301 is a reproduction unit corresponding to the track 260, and corresponds to, for example, one piece of music. Therefore, each audio substance information (AOTT_AOB210 (AOB
# 1, AOB # 2)) have different recording methods but the same content, and therefore the number and order of the programs 301 for the respective audio substance information are the same. Figure 1
In the case of 0, the programs # 1, # 2 and # 3 respectively are configured.

Next, each program 301 (programs # 1, # 2, # 3) is divided into separate PGCs 300 (PGC # 1, PGC #) as management information.
Summarize by 2). And these PGC300
(PGC # 1, PGC # 2) on the same track 261
By making it correspond to (track # 1 in the case of FIG. 10), a program 3 including audio substance information of different recording methods for the same track 260 (# 1)
01 (programs # 1, # 2, # 3) are related. That is, according to the present invention, the audio substance information of the program unit identified by the program number as the second division information, and the audio substance information of different recording methods, respectively, is recorded as the track number (# 1, #
2, # 3, ...), which are tracks 261 as a first division unit, and which have the same track number, are related to the same track 261 by using different blocked PGCs 300 as management information. Attached.

By doing so, a plurality of different types of audio information are converted into different entity information (AOTT_A).
Even when the method of recording separately in another area on the disc as OB) is adopted, the same title from the user,
A PG that is recognized as the same song and manages audio substance information of a recording method suitable for the user's instruction or the capability of the playback device.
By selecting C300, it is possible to handle a plurality of different types of audio substance information in a unified manner.

Next, in the recording area of the video format,
When the method of recording the audio substance information of different recording methods by the stream multiplexing method is adopted, as shown in FIG. 11, the audio substance information AOTT_VOB10
(VOB # 1 in the case of FIG. 11) is divided into blocks and each recording method (in the case of FIG. 11, recording form: 2 ch
And PGC300 provided for each multi-channel)
(In the case of FIG. 11, PGC # 1 and # 2) are used to relate to the same track 261 (track # 1 in the case of FIG. 11). In addition, each PGC300 is a program 30
1 (programs # 1, # 2, # 3 in the case of FIG. 11) is the same as in the case of FIG.

By adopting such a logical structure, each PGC 300 manages the recording method of each audio substance information, so that the PG is directly referenced without referring to the navigation information in the audio stream.
Only by selecting C300 according to the recording method, it is possible to properly reproduce the audio information of the desired recording method. That is, according to the present invention, the audio information recorded in the video format can be managed by the control information of the audio format. Of course, even in this case, the user recognizes the same title and the same song. Therefore, a plurality of audio information of different types can be handled in a unified manner by selecting a PGC that matches the user's instruction or the capability of the playback device.

As described above, according to the present invention, even when audio information is recorded in AOTT_AOB (when an audio title is reproduced), AOTT_V
Even when recorded in the OB (when reproducing the image / audio dual-use title), the audio selection can be performed by the same mechanism, and the present invention provides an audio title (AOTT) or an image / audio dual-use title (AVTT /
This is effective when playing AOTT) with an audio player.

Further, with reference to FIGS. 12 and 13, how this audio selection is performed will be described in a concrete example.

(5.3.1) Audio Selection in Audio Title First, the case where an audio title is reproduced by an audio player or a compatible player will be described. here,
It is assumed that all title groups consist of one title. It is assumed that the playback device is dedicated to 2ch, or that the user is set to select 2ch playback. Further, it is assumed that the user gives an instruction to reproduce the title group 262 (#j).

As described above, the title group 262
The ATS number of the title corresponding to and the ATS title number are obtained by referring to AOTT_SRP247 (see FIG. 8). As a result, it is assumed that the ATS number is # 2 and the ATS title number is # 3. The flow up to this point is as described in (4.5.1.1) audio player and (4.5.1.2) compatible player.

Next, the ATSI 211 of the ATS # 2 is read and the attribute information written in the ATSI_MAT 270 is stored (see the path indicated by "P12 (1)" in FIG. 12). At this stage, the attributes of each track of the title to be played cannot be specified. For the time being, all the attribute information is stored.

Then, read ATS_PGCIT271,
PGCI search pointer (ATS_PGCI in this)
_SRP) 273 (Fig. 12, "P12"
(See path indicated by (2)). AT in this table
ATS_P with S title number (ATS_TTN) # 3
Look for GCI_SRP273. In this case, ATS_PGCI with ATS title number # 3 as the first division information
It can be seen that there are two _SRP273 (# 3 and # 4) and they constitute a PGC block. So which P
It is determined whether to select the GC300. In this case, the playback device is dedicated to 2ch, or the user is set to select 2ch playback, so see the block type item. Since it is written here that a PGC block is assembled depending on the number of channels, next, Audi
PGC300 of the one written as 2ch or less by looking at item 284 (see FIGS. 9 and 12) of channels.
Select. Then, the address (16384 in this case) in which the reproduction control information ATS_PGCI276 of the selected PGC 300 is written is obtained, and the reproduction control information is read and stored therein (see “P12” in FIG. 12).
(See the path indicated by (3)).

In the reproduction control information, an information table regarding the program 301 corresponding to the track 260,
There is an information table regarding the cell 220. If you want to start playback from the beginning of the title, AT of program # 1
By looking at S_PGI, the attribute of the program # 1 is identified by using the information identifying the attribute of the program # 1 and the previously stored attribute information. Set the audio decoder according to this attribute. Next, from ATS_PGI, program # 1
Reading the top cell number (in this case, the program # 1 is to be reproduced, so the top cell number is also # 1), and the ATS_C_PB corresponding to that number is read.
The recorded address of the cell 220 is read from I, and the address is jumped to and reproduction is started (see "P1" in FIG. 12).
2 (4) ").

In the case of normal reproduction, ATS_C_stored in the memory being reproduced until the next program is reached.
Continue playing cells using PBI. When the reproduction of the program is completed, the ATS_PGI in the memory and the attribute information are also used to perform a series of processing for the next program reproduction and start the reproduction. This operation is repeated until the title ends. Therefore, as described above, all the attribute information in the management information and the reproduction control information ATS_PGCI must be stored.

Next, it is assumed that the reproducing apparatus is compatible with multi-channel reproduction and the user is set to select multi-channel reproduction. Further, it is assumed that the user gives an instruction to reproduce the title group 262 (#j).

The ATS number # 2 and the ATS title number # 3 of the title corresponding to the title group 262 are acquired, and the ATSI 211 of the ATS # 2 is read. Up to this point, it is the same as when 2ch playback is selected (Fig. 1
2, see the path indicated by "P1M (1)"). Also, AT
The attribute information written in the ATSI_MAT 270 of SI 211 is stored, the ATS_PGCIT 271 is read, and the ATS_PGC search pointer 273 therein is read (see the path indicated by “P1M (2)” in FIG. 12).
The processing up to this point is the same as when the 2ch reproduction is selected.

In this table, ATS_PGC_SRP2 whose ATS title number (ATS_TTN) is # 3
Find 73. In this case, the AT whose ATS title number is # 3
There are two S_PGCI_SRP (# 3 and # 4) PGC
It can be seen that the blocks are made up. Therefore, which PGC 300 is to be selected is determined. In this case, since the playback device is compatible with multi-channel playback and the user is set to select multi-channel playback, the block type item is viewed. here,
It is written that a PGC block is built due to the difference in the number of channels, so next, the audio channel
P of person who sees item 284 of s and is written as 3ch or more
Select GC300. Then, an address (24576 in this case) in which the reproduction control information ATS_PGCI276 of the selected PGC 300 is written is obtained, and the address is jumped to, and the reproduction control information is read and stored (FIG. 12,
See the path indicated by "P1M (3)").

Subsequent processing is basically the same as when 2ch reproduction is selected, except that the PGC 300 to be processed is different and the substance information to be reproduced is different. Program # from the program information table in the playback control information
By looking at ATS_PGI of No. 1, the attribute of program # 1 is specified, and the audio decoder is set. Next ATS_
From PGI, AT of the leading cell number # 1 of program # 1
The S_C_PBI is read, the address recorded in the cell # 1 is read, and the address is jumped to and reproduction is started (see the path indicated by "P1M (4)" in FIG. 12).

(5.3.2) Audio selection in image / audio dual-use title A case of reproducing an image / audio dual-use title with an audio player will be described. Here, it is assumed that all the title groups 262 are composed of one title. It is assumed that the playback device is dedicated to the LPCM or that the user has set to select the playback of the LPCM. Also, the user may select a title group 262
It is assumed that the reproduction of (#j) is instructed.

As described above, the title group 262
The ATS number and the ATS title number of the title 261 corresponding to are obtained by referring to AOTT_SRP247.
As a result, the ATS number is # 2 and the ATS title number is #
Suppose it was 4. The flow up to this point is as described in the case of the (4.5.3.1) audio player.

Next, the ATSI 212 of ATS # 2 is read, and the attribute information written in the ATSI_MAT 270 is stored (see the path indicated by "P2L (1)" in FIG. 13). At this stage, the attributes of each track of the title to be played cannot be specified. For the time being, all the attribute information is stored. Further, in this case, since the image / audio dual-use title is being reproduced, the corresponding ATS 203 is an ATS having no substantive information but only navigation information.

Then, read ATS_PGCIT271,
The PGCI search pointer 273 therein is read (see the path indicated by “P2L (2)” in FIG. 13). ATS title number (ATS_TTN) in this table
Searches for # 4 ATS_PGCI_SRP273. In this case, ATS_PGCI_S with ATS title number # 4
It can be seen that there are two RP273s (# 4 and # 5) and they constitute a PGC block. So which PGC3
It is determined whether 00 is selected.

In this case, since the reproducing apparatus is dedicated to the LPCM or the user is set to select the reproduction of the LPCM, the block type item is viewed. Since it is written here that PGC blocks are assembled depending on the number of channels and the encoding method, next, audio co
Looking at the item 285 of the ding mode, the PGC 300 that is described as LPCM is selected.

Next, the reproduction control information AT of the selected PGC
The address in which S_PGCI276 is written (24576 in this case) is obtained, and the address is jumped to and the reproduction control information is read and stored (FIG. 13, "P2L (3)").
See the path shown in.).

The reproduction control information includes an information table relating to the program 301, which corresponds to the track 261.
There is an information table regarding the cell 220. If you want to start playback from the beginning of the title, AT of program # 1
By looking at S_PGI, the attribute of the program # 1 is identified using the information identifying the attribute of the program # 1 and the previously stored attribute information. Set the audio decoder according to this attribute. Then from ATS_PGI, program #
The first cell number of 1 is read (in this case, since the program # 1 is being reproduced, the first cell number is also # 1), and the ATS_C_P corresponding to that number is read.
The recorded address of the cell is read from BI, and the address is jumped to and reproduction is started (see "P2L" in FIG. 13).
(See the path indicated by (4)).

In the case of normal reproduction, ATS_C_stored in the memory being reproduced until the next program is reached.
Continue playing cells using PBI. When the reproduction of the program is completed, the ATS_PGI in the memory and the attribute information are also used to perform a series of processing for the next program reproduction and start the reproduction. This operation is repeated until the title ends. Therefore, as described above, all the attribute information in the management information and the reproduction control information ATS_PGCI must be stored.

Next, the reproducing apparatus performs multi-channel reproduction and AC-3 (a kind of encoding method: Dolby Dig).
It is assumed that the user is set to select the reproduction of AC-3. Further, it is assumed that the user gives an instruction to reproduce the title group 262 (#j).

The ATS number # 2 and ATS title number # 4 of the title 261 corresponding to the title group 262 are acquired, and the ATSI 211 of ATS # 2 is read.
The process up to this point is the same as when LPCM reproduction is selected (see the path indicated by "P2A (1)" in FIG. 13). Also, the attribute information written in the ATS_MAT 270 of the ATSI 211 is stored, the ATS_PGCIT 271 is read, and the ATS_PGC search pointer 273 therein is read (see the path indicated by “P2A (2)” in FIG. 13). The processing up to this point is the same as when the LPCM reproduction is selected.

In this table, the PGC 300 having the ATS title number (ATS_TTN) of # 4 is searched. In this case, there are two PGCs whose ATS title number is # 4.
It can be seen that it constitutes the C block. Therefore, it is determined which PGC 300 is selected.

In this case, it is assumed that the reproducing apparatus is compatible with multi-channel reproduction and AC-3 and the user has set so as to select the reproduction of AC-3. Therefore, the book type item is viewed. Since it is written here that PGC blocks are assembled according to the number of channels and the encoding method, the PGC of AC-3 is selected next by looking at the item 285 of Audio coding mode. Then, the reproduction control information ATS_ of the selected PGC
Address where PGCI276 is written (3 in this case)
2768), jump to it, read the reproduction control information, and store it (see the path indicated by “P2A (3)” in FIG. 13).

In the subsequent processing, the PGC to be processed is different,
It is basically the same as when LPCM reproduction is selected, except that the stream to be reproduced is different. In the playback control information,
By looking at the ATS_PGI of the program # 1 from the information table regarding the program, the attribute of PG # 1 is specified and the audio decoder is set. Next, from ATS_PGI, ATS_C_ of the first cell number # 1 of program # 1
The PBI is read, the address recorded in cell # 1 is read, and the address is jumped to and playback is started (Fig. 13,
See the path indicated by "P2A (4)". However, in this case, since the actual information (AOTT VOB) to be reproduced is the same,
The jump destination address is the same as when the LPCM reproduction is selected.

(6) Playback Device (6.1) Video DVD Player As shown in FIG. 14, the video DVD player according to the embodiment has a pickup 80, a demodulation correction unit 81, stream switches 82 and 84, and a track buffer. 8
3, system buffer 85, demultiplexer 86
And VBV (Video Buffer Verifier) buffer 87
, Video decoder 88, and sub-picture buffer 89
, Sub-picture decoder 90, mixer 91, audio buffer 92, audio decoder 93, input unit 98, display 99, system controller 100, drive controller 101, spindle motor 102, slider motor 103. It is composed of and. The configuration shown in FIG. 14 is a video DVD.
Only the part relating to the reproduction of video and audio is described in the configuration of the player, and the servo circuit and the like for servo-controlling the pickup 80, the spindle motor 102, the slider motor 103, and the like are the same as those of the conventional art. The description and detailed description are omitted.

Next, the operation will be described.

The pickup 80 includes a laser diode, a beam splitter, an objective lens, a photodetector and the like (not shown), irradiates the DVD 1 with the light beam B as reproduction light, and reflects the light beam B from the DVD 1. It receives light and outputs a detection signal Sp corresponding to the information pit formed on the DVD 1. At this time, the light beam B is accurately applied to the information track on the DVD 1, and a method similar to that of the conventional technique is applied to an objective lens (not shown) so that the information recording surface on the DVD 1 is accurately focused. The tracking servo control and the focus servo control are performed by.

The detection signal Sp output from the pickup 80 is input to the demodulation correction unit 81, demodulation processing and error correction processing are performed to generate a demodulation signal Sdm, which is output to the stream switch 82 and the system buffer 85. .

The stream switch 82 to which the demodulated signal Sdm is input is controlled to be opened / closed by the switch signal Ssw1 from the drive controller 101, and when closed, the input demodulated signal Sdm is directly passed through and output to the track buffer 83. To do. On the other hand, when the stream switch 82 is open, the demodulated signal Sdm is not output, and unnecessary information (signal) is not input to the track buffer 83.

The track buffer 83 to which the demodulated signal Sdm is input is constituted by a FIFO (First In First Out) memory or the like, and temporarily stores the input demodulated signal Sdm, and the stream switch 84 is closed. If so, the stored demodulated signal Sdm is continuously output.

The stream switch 84 to which the demodulated signal Sdm is continuously input is prevented from causing various buffers in the subsequent stage to overflow in the demultiplexing process in the demultiplexer 86 or conversely becoming empty so that the decoding process is not interrupted. In addition, opening / closing is controlled by the switch signal Ssw2 from the system controller 100.

On the other hand, the system buffer 85 to which the demodulated signal Sdm is input in parallel with the track buffer 83 is DV
First detected when loading D1, DVD
Management information (VMG
2 etc.) or VTS11 for each VTS3 and store it as the control information Sc to the system controller 100, and temporarily store the DSI data 51 for each navigation pack 41 during playback, and the system controller 100 stores it as the control information Sc. Output.

In the demultiplexer 86 to which the demodulated signal Sdm is continuously input via the stream switch 84, the video data, the audio data, the sub-picture data and the PCI data for each navigation pack are supplied from the demodulated signal Sdm for each pack. To extract the video signal Sv, sub-picture signal Ssp, audio signal Sad and PCI signal Spc.
To the VBV buffer 87, the sub-picture buffer 89, and the audio buffer 92, respectively.

At this time, the demultiplexer 86 extracts a pack header, a packet header, etc. from each pack (including the audio pack 43) and packet, and outputs the information contained in each to the system controller 100 as a header signal Shd. .

The VBV buffer 87 to which the video signal Sv is input is formed of a FIFO memory or the like, temporarily stores the video signal Sv, and outputs it to the video decoder 88. The VBV buffer 87 is for compensating the variation in the data amount for each picture (see FIG. 2) in the video signal Sv compressed by the MPEG2 system. Then, the video signal Sv in which the variation in the data amount is compensated is input to the video decoder 88, demodulated by the MPEG2 system, and output to the mixer 91 as a demodulated video signal Svd.

On the other hand, the sub-picture buffer 89 to which the sub-picture signal Ssp is input temporarily accumulates the input sub-picture signal Ssp and outputs it to the sub-picture decoder 90.
The sub-picture buffer 89 is for outputting the sub-picture data 44 included in the sub-picture signal Ssp in synchronization with the video data 42 corresponding to the sub-picture data 44. Then, the sub-picture signal Ssp synchronized with the video data 42 is input to the sub-picture decoder 90, demodulated and output to the mixer 91 as a demodulated sub-picture signal Sspd.

The demodulated video signal Svd output from the video decoder 88 and the demodulated sub video signal Sspd (corresponding demodulated video signal S
Synchronized with vd. ) Is mixed by the mixer 91 and output as a final video signal Svp to be displayed to a display unit such as a CRT (Cathod Ray Tube) not shown.

The audio buffer 92 to which the audio signal Sad is input is composed of a FIFO memory or the like,
The input audio signal Sad is temporarily stored and output to the audio decoder 93. Audio buffer 9
2 is a video signal Sv or a sub-picture signal Ssp containing picture information corresponding to the audio signal Sad based on the header control signal Shc output from the system controller 100.
The audio signal Sad is delayed according to the output status of the corresponding video information. Then, the audio signal Sad time-adjusted so as to be synchronized with the corresponding video information is output to the audio decoder 9
3 and the demodulated audio signal Sadd that has been subjected to the reproduction processing in the linear PCM system based on the header control signal Shc output from the system controller 100.
Is output to a speaker (not shown). It should be noted that in an audio DVD including only music information, synchronization processing with video information is unnecessary.

(6.2) Audio DVD Player Next, regarding the above audio DVD player, FIG.
Will be described with reference to. As shown in FIG. 15, the audio DVD player has the same configuration as that of the video DVD player shown in FIG. 14 except that the subsequent stage of the demultiplexer 86 is different. Therefore, the components subsequent to the demultiplexer 86 will be described.

In the demultiplexer 86 to which the demodulated signal Sdm is continuously input through the stream switch 84, audio information is extracted from the demodulated signal Sdm for each pack and output as the audio signal Sad to the audio buffer 92. .

The audio buffer 92 to which the audio signal Sad is input is composed of a FIFO memory or the like,
The input audio signal Sad is temporarily stored and output to the audio decoder 93. Audio signal Sad
Is input to the audio decoder 93 and is subjected to reproduction processing or the like in the linear PCM system based on the control signal Shc output from the system controller 100, and output as a demodulated audio signal Sadd to a speaker or the like not shown.

For example, real-time information such as real-time text is output from the demultiplexer to the RTI buffer. The data temporarily stored in the RTI buffer is output to the RTI decoder based on the control signal Shc output from the system controller 100, and lyrics or the like is displayed on a display device (not shown).

When it is detected that the voice needs to be temporarily interrupted (paused) during reproduction immediately after accessing the desired information, the system controller 10
The pause signal Sca is output from 0 to the audio decoder 93, and the audio decoder 93 temporarily stops outputting the demodulated audio signal Sadd.

FIG. 16 shows the structure of the audio decoder 93. As illustrated, the audio decoder 93 includes a signal processing unit 120 including a digital filter and the like, a D / A converter 121, an analog output circuit 122 including an amplifier and the like, a digital output circuit 123, and a RAM 124.
a system microcomputer 124 including a and a clock circuit 12
5 and.

The system microcomputer 124 exchanges control signals Sca with the system controller 100, and controls the operation of the clock circuit 125, the signal processing unit 120, the D / A converter 121, and the analog output circuit 122. The system microcomputer 124 has a RAM 124a inside. The RAM 124a temporarily stores the audio attribute information supplied as the control signal Sca from the system controller 100. The system microcomputer 124 is an RA
The audio attribute information stored in the M124a is referred to, and the contents are referred to by the clock circuit 125 and the signal processing unit 12.
Supply to 0. Specifically, the system microcomputer 124
Supplies the sampling frequency information in the audio attribute information to the clock circuit 125. The clock circuit 125 has an oscillator and supplies the clock signal fs corresponding to the instructed sampling frequency to the signal processing unit 120. The system microcomputer 124 also supplies the sampling frequency, the number of quantization bits, the number of channels, and the presence / absence of emphasis in the audio attribute information to the signal processing unit 120, and provides the D / A converter 121 with the number of channels information. Further, the system microcomputer 124 supplies the analog output circuit 122 with information such as the degree of amplification of the signal of each channel. The information of the amplification degree for each channel is included in the audio attribute information to be included in the system controller 100.
Can be supplied from.

The signal processing unit 120 has a clock circuit 125.
System microcomputer 1 using the clock signal fs from
The audio signal supplied from the audio buffer 92 is decoded according to information such as the encoding method (linear PCM or Dolby AC3, etc.) obtained from 24, the sampling frequency, the number of quantization bits, etc. , De-emphasis processing is performed in accordance with the presence / absence information of emphasis, and output to the D / A converter 121. The D / A converter 121 is the system microcomputer 1
According to the channel information obtained from 24, the input signal is divided into each channel and further output to the analog output circuit 122 as an analog signal for each channel. The signal processing unit 120 also outputs the digital audio signal Sadd via the digital output circuit 123 to the outside.

(6.3) Compatible DVD Player Although the compatible DVD player is not shown in FIG.
14 is provided with the VBV buffer 87, the video decoder 88, the sub-picture buffer 89, the sub-picture decoder 90, and the mixer 91 in the video DVD player shown in FIG. 14, and the system controller 100 is used for the video format. It is configured to be capable of playing both the audio format and the audio format.

(7) Audio Selection in Playback Device Audio selection in the playback device means switching of the type of audio information to be played when the audio player plays an audio title or an image / audio dual-use title.

The types of audio information are (5.2)
As described above, the audio information recording method is mainly classified into the following three types.

A. Recording status b. Encoding method c. Reproduction mode (7.1) When blocks are formed depending on the recording status (binaural) When the recording status is different, it is sufficient to always switch according to the user's preference regardless of the ability of the device, and initial setting is not necessary. In the case of binaural recording,
It is also possible for the reproducing apparatus to implement the following switching method.

Binaural recording for realizing binaural reproduction will be described in detail.

First, consider the case where a normal stereo signal is reproduced by headphones. For example, as shown in FIG.
Two microphones are placed at predetermined positions in the concert hall, and the outputs of these microphones are reproduced by the headphones. In this case, the reproduced sound field is formed in the occipital region of the listener as shown by the shaded area in FIG. This is because in a normal stereo reproduction signal sound field using a speaker, the sound image is completely localized to one speaker, so the level difference between the left and right speakers is required to be about 25 dB, whereas when listening to headphones. This is because the sound is completely localized in one ear with a level difference of about 10 dB. In this way, when listening to normal stereo-recorded music through headphones, there is a problem that the stereo feeling becomes too strong and a natural sense of reality cannot be obtained.

On the other hand, in binaural reproduction, a dummy head having substantially the same acoustic impedance and characteristics as an actual human being is prepared, and microphones are placed around the external auditory meatus of both ears of this dummy head, as shown in FIG. As shown, for example, this dummy head is placed in the audience seat of the concert hall, and the output of the microphone in the dummy head is reproduced by the headphones. When such binaural reproduction is performed, the sound field reproduced around the listener's head is as shown in FIG.
The range is indicated by the shaded area of 7 (A). Therefore, a more natural presence can be obtained when listening through headphones or earphones.

In order to realize such a binaural reproduction, it is a binaural recording to record music using the above-mentioned dummy head, and such a binaural recorded work and a stereo recorded work are recorded. By recording both of them on a DVD disc in a multiplexed manner as shown in FIG. 18, for example, it is possible to perform appropriate reproduction according to the listening form. The recording method is not limited to the multiplex method, and the stereo recorded audio substance information and the binaural recorded audio substance information may be recorded in different AOBs 210, respectively.

Whether or not to perform binaural reproduction is determined by
For example, a headphone jack 400 is provided in the playback device as shown by a dotted line in FIG.
It was decided to do this depending on whether or not the headphone plug was inserted into the.

The headphone jack 400 has a circuit configuration as shown in FIG. 19, for example, and a switch section 401 that is pushed up by abutting on the headphone plug.
Are provided on both the top and bottom of the plug. Then, by pushing up these switch parts 401, the switch parts 401 are brought into the open state, and it is possible to detect that the plug is inserted.

With such a configuration, when the headphone plug is inserted into the headphone jack 400 and the user designates a certain song, the PGC 300 that manages the binaurally recorded audio substance information is executed by the procedure described above. The selected and binaurally recorded audio substance information is automatically reproduced.

Therefore, the user can listen to the desired binaurally recorded song by simply inserting the headphone plug into the headphone jack 400.

The detection as to whether or not the headphone plug is inserted in the headphone jack 400 can be performed at an appropriate timing such as when the reproduction is started or during the reproduction.
Also, instead of always selecting the audio substance information recorded in double-normal recording when the headphone plug is inserted in the headphone jack 400, the input unit 9 shown in FIG.
The user may set the priority order by the setting operation of 8. For example, when a high priority is set for reproduction of stereo recording, the user can listen to stereo recorded audio substance information through headphones.

(7.2) When Blocks are Formed by Encoding Method If the encoding methods are different, it is determined that the reproducing apparatus does not correspond to the encoding method of the audio information recorded on the disc (the corresponding decoder is I can't hear the sound unless I have it). The user is confused in such a state. Therefore, it is determined that the LPCM audio information should be recorded on all the discs, and that all the reproducing devices can reproduce the LPCM. Therefore, the user
LP for any audio DVD disc
Only the audio information recorded in the CM can be reproduced.

On the other hand, various encoding methods are currently in practical use. Most of these are compression encoding methods, and have a characteristic that data can be effectively used especially when recording multi-channel. In this way, when there is audio information recorded by various encoding methods according to the purpose, only when the reproducing apparatus has a corresponding decoder, it is possible to select and reproduce from it. In this case, the playback device uses the audio in the ATS_PGCI_SRP 273 described above according to the temporary setting by the user, the initial setting by the user, and the setting by the playback device.
Judging from the information indicating the coding method written in the item 285 of coding mode, the optimum audio information is selected according to the flowchart shown in FIG. 20 , and reproduction is performed.

Each setting process is as shown in FIG. 14 or FIG.
The input unit 98 shown in FIG. Further, the set information is the system controller 10
It can be configured to be stored in memory within 0.

Further, when the DVD disc is set in the reproducing apparatus or when the reproduction is started, the control information recorded on the DVD disc as described above is read by the system controller 100, and the DV is read.
The recording form, the reproduction form, the encoding system, etc. of the audio substance information recorded on the D disc are displayed on the display 99.
Can also be configured to display. With such a configuration, the user can appropriately know the selectable settings on the DVD disc, and can perform an appropriate selection operation.

An example of the process for selecting the PGC from the information indicating the coding method will be described below with reference to the flowchart shown in FIG.

First, when the selection process is started (step S1), ATS_PGCI_SRP273 is read (step S2), and ATS_PGCI_SR is read.
The encoding method described in the item 285 of Audio coding mode described in P273 is read (step S3). Next, it is determined whether or not the reproducing device has the capability of reproducing by the read encoding method (step S4). As a result, when the playback device does not have the capability of performing playback according to the read encoding method (step S4; No), ATS_PGCI_SRP273 is again used.
The process from reading is repeated (step S2).
On the other hand, when the reproducing apparatus has the capability of reproducing the read encoding method (step S4; Yes), it is determined whether the user has selected the read encoding method as a temporary setting. Yes (step S5). This setting is performed, for example, when starting playback or during playback by a remote control device or the like. For example, when trying to play a specific song by an encoding method different from the existing setting. Done. As a result of the determination, when the user has selected the read encoding method as the temporary setting (step S5; Ye
s), the selection process ends, and the ATS_PGCI_SR
The PGC 300 indicated by P273 is selected, and the reproduction is started (step S8).

However, if the user has not selected the read encoding method as a temporary setting (step S5; No), it is determined whether the user has selected the read encoding method as the initial setting. It is determined (step S6). This initial setting is to perform the basic encoding method of the reproducing apparatus according to the preference of the user, etc., and if this initial setting is performed, all the above-mentioned temporary settings are performed unless the temporary setting is performed. The tune will be reproduced by the encoding method set by default. That is, when the user has selected the read encoding method as the initial setting (step S6; Yes), the selection process is terminated and the ATS is changed.
The PGC 300 indicated by _PGCI_SRP273 is selected, and the reproduction is started (step S8).

If the user has not selected the read encoding method as the initial setting (step S
6; No), it is determined whether or not the read encoding method is selected as the setting of the playback device (step S).
7). This setting is performed at the manufacturing stage of the reproducing apparatus, and unless the user makes the above-described various settings, all the songs are reproduced by the set encoding method. That is, when the read encoding method is selected as the setting of the reproduction device (step S7; Yes), the selection process is terminated and the ATS_
The PGC indicated by PGCI_SRP273 is selected and the reproduction is started (step S8).

Note that due to an error in the read data, etc.
If the read coding method is not selected as the setting of the playback device (step S7; No), the A code is again used.
The process from the reading of TS_PGCI_SRP273 is repeated (step 2).

(7.2) When Blocks are Formed According to Playback Mode The selection of the playback mode referred to here means selecting either 2ch (stereo) playback or multi-channel playback. When the playback device is compatible with multi-channel, audio information of multi-channel recording can be selected and played. However, only when the user has a system (a plurality of amplifiers and speakers) capable of reproducing multi-channel and the reproducing apparatus is connected to the system, reproduction as the original multi-channel can be performed. Therefore, also in this case, according to the temporary setting by the user, the initial setting by the user, and the setting by the reproducing apparatus, the ATS_PGCI described above is used.
Judging from the information indicating the number of channels written in the Audio channels item 284 described in _SRP273, the optimum audio information is selected and reproduced according to the same flow as the above-described flowchart.

(7.3) When Blocks are Formed According to Encoding System and Playback Form As shown in the example of FIG. 12, when the encoding system and the playback form are different due to the difference in the type of audio information in the block There is. In such a case, the following processing is required.

Priorities are set for all combinations of each encoding method and each reproduction mode that can be processed by the reproduction device. An example is shown in Table 2. Such settings are made possible by temporary settings by the user, initial settings by the user, and settings by the playback device, as necessary.

[0254]

[Table 2]

In Table 2, the smaller the number in the table, the higher the priority.

In accordance with this priority setting, optimum audio information is selected and reproduced as shown in the flowchart of FIG. Hereinafter, an example of a process of selecting the optimum audio information and reproducing it will be described with reference to the flowchart shown in FIG.

First, when the selection process is started (step S10), ATS_PGCI_SRP273 is acquired (step S11), and the ATS is determined according to the block type.
The encoding method described in the item 285 of Audio coding mode in _PGCI_SRP273 and Audio chan
The reproduction mode described in the item 284 of nels is read (step S12). Next, it is determined whether or not the playback device has the capability of performing playback according to the combination of the read encoding method and playback mode (step S13).
As a result, if the playback device does not have the capability of performing playback based on the combination of the read encoding method and playback mode (step S13; No), ATS_PGCI_ is returned again.
The process from reading the SRP 273 is repeated (steps S11 to S11). On the other hand, when the reproducing apparatus has the ability to perform reproduction by the combination of the read encoding method and the reproducing apparatus (step S13; Yes), the user temporarily uses the combination of the read encoding method and reproducing apparatus. It is determined whether or not the priority order is set for the selection as the temporary setting (step S14). If the priority is set (step S14;
Yes), a priority is set as a priority number to be selected as a temporary setting by the user for the combination of the read encoding method and the read device (step S15). Then, it is determined whether or not the set priority number is the smallest in the block (step S1
9) If it is the smallest (step S19; Ye)
s), the selection process ends, and the ATS_PGCI_SR
The PGC 300 indicated by P273 is selected to start reproduction (step S20).

However, when the set priority number is not the smallest number in the block (step S1
9; No), ATS_PGCI_S next to the block
The process from the acquisition of RP273 is repeated (step S1.
1-). Then, for the next combination of the encoding method and the reproduction mode, as described above, it is determined whether or not the reproduction apparatus has the reproduction capability, and whether or not the priority is set as a temporary setting by the user. Judgment is performed and processing is performed according to the determination result (steps S13, 14, 1).
5).

On the other hand, in the case where the priority order is not temporarily set by the user for the next combination of the encoding method and the reproduction mode (step S14; N).
o), it is determined whether or not a priority is set as an initial setting by the user for the combination (step S16). If the priority is set (step S16; Yes), the priority as the initial setting by the user is set as the priority number with respect to the combination of the read encoding method and the read device (step S16). S17). Then, it is judged whether or not the set priority number is the smallest in the block (step S19), and if it is the smallest (step S19; Ye).
s), the selection process ends, and the ATS_PGCI_SR
The PGC 300 indicated by P273 is selected to start reproduction (step S20).

However, if the set priority number is not the smallest number in the block (step S1
9; No), ATS_PGCI_S next to the block
The process from the acquisition of RP273 is repeated (step S1.
1-). Then, for the next combination of the encoding method and the reproduction mode, as described above, it is determined whether or not the reproduction apparatus has the reproduction capability, and whether or not the priority is set as a temporary setting by the user. The determination and the determination as to whether or not the priority order as the initial setting by the user is set are performed, and the processing according to the determination result is performed (steps S13, 14, 15, 16, 17).

On the other hand, when the priority order is not set as the initial setting by the user for the next combination of the encoding method and the reproduction mode (step S16; N).
o), the priority of the initial setting of the reproducing apparatus from the beginning for the combination is set as the priority number (step S18). Then, it is determined whether or not the set priority number is the smallest in the block (step S1
9) If it is the smallest (step S19; Ye)
s), the selection process ends, and the ATS_PGCI_SR
The PGC 300 indicated by P273 is selected to start reproduction (step S20).

As described above, in the case where the priority is set for the combination of the encoding method and the reproduction mode, the combination is selected as the setting mode of the smallest number in the set priority. Based on the selection of the PGC 300, the combination is played back.

As described above, with respect to each encoding method and each reproduction mode combination, the priority is set in each setting of the temporary setting by the user, the initial setting by the user, and the setting by the reproducing apparatus as needed. By making it possible to determine, even when a plurality of audio information of different types are recorded, the user can select and reproduce the optimum audio information without selecting the type. .

In the example described with reference to FIGS. 20 and 21, when the specification is made such that the reproducing capability of the reproducing apparatus is not suitable and no setting is selected. May be configured to display a warning by a display means such as the display 99.

[0265]

According to the information recording medium of the present invention, it is possible to manage audio information of the same content having different attributes under the content, so that the user can obtain audio information of the same content having different attributes. Also, it is not necessary to specify for each audio information, and it is possible to cause the user to perform appropriate reproduction without causing confusion.

[Brief description of drawings]

FIG. 1 is a diagram showing a physical structure (physical format) of a video DVD.

FIG. 2 is a diagram showing a logical structure (logical format) of a video DVD.

FIG. 3 is a diagram showing a physical structure (physical format) of an audio DVD.

FIG. 4 is a diagram showing a logical structure (logical format) of an audio DVD.

FIG. 5 is a diagram showing types of DVDs.

FIG. 6 is a diagram showing an example of an audio / video dual-use DVD.

FIG. 7 is a diagram showing a concept of double management of the same object.

8 is a diagram showing an example of navigation information defined for the audio / video dual-use DVD shown in FIG. 6;

FIG. 9 is a diagram showing information recorded in an ATS.

FIG. 10 is a diagram showing a relationship between user recognition, navigation information, and substantive information during reproduction of an audio title.

[Fig. 11] Fig. 11 is a diagram showing a relationship between user recognition, navigation information, and substantive information during reproduction of a video / audio dual-use title.

FIG. 12: DVD recorded in audio format
It is a figure which shows the information recorded on ATSI of a disc.

FIG. 13 is a diagram showing information recorded in ATSI of a DVD disc recorded in an audio format and a video format.

FIG. 14 is a diagram showing a schematic configuration of a video DVD player.

FIG. 15 is a diagram showing a schematic configuration of an audio DVD player.

16 is a diagram showing a configuration of an audio decoder in the audio DVD player of FIG.

FIG. 17A is a diagram showing a sound field formed when normal stereo reproduced music information is reproduced with headphones, and FIG. 17B is a sound field formed when binaural reproduced music information is reproduced with headphones. It is a figure which shows the sound field performed.

FIG. 18 is a conceptual diagram showing that an audio pack recorded in two channels by a stereo system and an audio pack recorded in two channels by a binaural system are multiplexed.

FIG. 19 is a diagram showing an example of a circuit configuration of a headphone jack.

FIG. 20 is a flowchart showing an example of processing for selecting a PGC from information indicating an encoding method.

FIG. 21 is a flowchart showing an example of a process of selecting a PGC from information that combines an encoding method and a reproduction mode.

[Explanation of symbols]

3 ... VMG 10 ... VOB 11 ... VTSI 202 ... AMG 204 ... SAPPT 210 ... AOB 211 ... ATSI 240 ... AMGI 242 ... ATT search pointer table 243 ... AOTT search pointer table 245 ... ATT search pointer 247 ... AOTT search pointer 251 ... TT search pointer table 254 ... TT search pointer 261 ... Title 300 ... PGC 301 ... Program

Front page continuation (72) Inventor Sotohiro Takahashi 25, Nishimachi, Kawada City, Saitama Prefecture 1 Nishimachi, Pioneer Co., Ltd. Kawagoe factory (72) Inventor Yoshinori Hasegawa 1-4-1, Meguro-ku, Tokyo Pioneer Honsha Co., Ltd. (56) References Japanese Patent Laid-Open No. 10-64199 (JP, A) International Publication 97/7506 (WO, A1) (58) Fields investigated (Int.Cl. 7 , DB name) G11B 20/10 -20/16 351 G11B 27/00

Claims (6)

(57) [Claims]
1. An audio information recording area (ATS) in which a plurality of audio information having different attributes are recorded, and reproduction control information (ATS_) defined for each audio information.
An information recording medium having a reproduction control information recording area (ATSI) in which PGCI) is recorded, wherein the reproduction control information recording area has identification information for associating a plurality of audio information having different attributes as the same work. as a feature in that it comprises an attribute information indicating an attribute of the audio information, the one plurality of audio information in which the number of channels are different, the block type information indicating whether encoding method is different, the Information recording medium.
2. The identification information includes an information recording medium of reproduction control information (ATS_PGCI) defined for each audio information.
The information recording medium according to claim 1, comprising recording position information (ATS_PGCI_SA) on the body .
3. The information recording medium according to claim 1, wherein the identification information includes block mode information indicating whether the audio information forms a block.
4. The information recording medium according to claim 3, wherein the block mode information is information indicating whether the audio information is first or last in a block.
5. The identification information includes the title number of each audio information, and the title numbers of a plurality of audio information having the same work but different attributes are the same. 4. The information recording medium according to any one of 4 above.
6. A reproducing apparatus for reproducing the information recording medium according to claim 1, comprising a reading unit for reading information from the information recording medium, and a control unit, wherein the control unit is read. A reproducing apparatus for reproducing audio information based on the identification information and a preset attribute of the audio information to be reproduced.
JP2000064247A 1998-04-10 2000-03-09 Information recording medium and reproducing apparatus therefor Expired - Lifetime JP3375931B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11615098A JP3357288B2 (en) 1998-04-10 1998-04-10 Information recording medium and reproducing apparatus
JP2000064247A JP3375931B2 (en) 1998-04-10 2000-03-09 Information recording medium and reproducing apparatus therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000064247A JP3375931B2 (en) 1998-04-10 2000-03-09 Information recording medium and reproducing apparatus therefor

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP10116150 Division

Publications (2)

Publication Number Publication Date
JP2000293951A JP2000293951A (en) 2000-10-20
JP3375931B2 true JP3375931B2 (en) 2003-02-10

Family

ID=26454526

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000064247A Expired - Lifetime JP3375931B2 (en) 1998-04-10 2000-03-09 Information recording medium and reproducing apparatus therefor

Country Status (1)

Country Link
JP (1) JP3375931B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3888307B2 (en) 2003-01-15 2007-02-28 船井電機株式会社 Optical disk playback device
JP4288609B2 (en) * 2005-03-14 2009-07-01 ソニー株式会社 Reproduction device, reproduction method, reproduction program, recording device, recording method, and recording program

Also Published As

Publication number Publication date
JP2000293951A (en) 2000-10-20

Similar Documents

Publication Publication Date Title
US6567609B2 (en) Optical disk, reproduction apparatus, and reproduction method
KR100272405B1 (en) Recording medium recorded karaoke data, method and apparatus for reproducing the karaoke data thereform, and method and apparatus for recording the karaoke data therein
US7136575B2 (en) Audio disc of improved data structure and reproduction apparatus therefor
US6449228B2 (en) DVD-audio disk, and apparatus and method for recording data on and/or reproducing data from the same
KR100865826B1 (en) Information recording medium and data reproducing device
US6574419B1 (en) Optical disk, reproduction apparatus reproduction method, and recording medium
KR100259559B1 (en) Audio system which not only enables the application of the surround system standard to special playback uses but also easily maintains compatibility with a surround system
JP3816572B2 (en) Information recording apparatus, information recording method, information reproducing apparatus, and information reproducing method
US7613078B2 (en) Information recording medium, information recording and/or reproducing apparatus and method, and program storage device and computer data signal embodied in carrier wave for controlling record or reproduction
US6567371B1 (en) Audio data structure, recording media, and processor
EP1274080B1 (en) Information recording medium, apparatus for recording the same and apparatus for reproducing the same
CN100538850C (en) Information record and transcriber
US5933569A (en) Information recording medium apparatus for recording the same and apparatus for reproducing the same
JP3969762B2 (en) Information recording medium, recording apparatus and method thereof, and reproducing apparatus and method thereof
US7680002B2 (en) Information recording medium, information recording apparatus and method, information reproducing apparatus and method, information recording/reproducing apparatus and method, recording or reproduction control computer program, and data structure containing control signal
JP4489248B2 (en) Optical disk, apparatus and method for recording / reproducing data on / from optical disk
JP3480777B2 (en) Information recording apparatus, information recording method, information reproducing apparatus, and information reproducing method
JP3376265B2 (en) Object sharing system for multiple contents
JP3696327B2 (en) Information recording apparatus and method, and information reproducing apparatus and method
CN100555436C (en) The method of canned data and transcriber thereof on information storage medium
US7738777B2 (en) DVD-audio disk, and apparatus and method for playing the same
US6665241B2 (en) Apparatus and method for recording and reproducing data on and from a DVD-Audio disk
CN1892841B (en) Information reproducing device and method
US6574187B2 (en) Audio information recording medium and audio information reproducing apparatus
EP1628307B1 (en) Information storage medium, and apparatus for reproducing the same

Legal Events

Date Code Title Description
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071129

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081129

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081129

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091129

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091129

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091129

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091129

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101129

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101129

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111129

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111129

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121129

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131129

Year of fee payment: 11

EXPY Cancellation because of completion of term