JP3607626B2 - Digital information storage medium including audio information, recording method and reproducing method using the medium, and recording apparatus and reproducing apparatus using the medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an audio information recording method, reproducing method, editing method, and an information storage medium thereof.
[0002]
A particularly characteristic point relates to a recording method, a reproducing method, an editing method, and a data structure recorded on the information storage medium, with respect to an information storage medium capable of recording (or recording) / reproducing information related to the sound.
[0003]
The present invention also provides an information storage medium in which both reproduction procedure information for sequentially reproducing information recorded on the information storage medium and other reproduction procedure information that can be specified by the user are recorded as management information. The present invention also relates to a technical field related to a display method for displaying management information contents and an editing method using the display result.
[0004]
[Prior art]
In September 1999, “Part 3 VIDEO RECORDING DVD Specifics for Rewritable / Re-recordable Discs” was issued from the DVD Forum as a standard for recording / reproducing video information on an information storage medium.
[0005]
In the video information, there is a unit for dividing a large video content called “recording unit” or “title corresponding to a program unit”, and in the above standard, a management unit called a video object is used for “recording unit” However, for “program units and titles”, there is a management unit called a program.
[0006]
A standard capable of recording / reproducing audio information aiming at high compatibility with the above video recording (Video Recording) standard is currently being examined by the DVD Forum as an audio recording standard.
[0007]
[Problems to be solved by the invention]
By the way, audio information is recorded and reproduced in very small units called “tracks” corresponding to “songs”. If a management unit corresponding to this “track” is included in the management information for audio information, it becomes necessary to provide a new layer corresponding to “track” for the hierarchical structure of the video recording standard described above. There arises a problem that high compatibility with the standard is lost.
[0008]
The object of the present invention has been made in view of the above circumstances, and a data structure that can easily manage each track specific to audio recording while ensuring high compatibility with the video recording standard, and related items. To provide an optimum recording method, reproducing method, and editing method for audio-related information to be recorded on an information storage medium.
[0009]
Another object of the present invention is “a method for editing only audio information that is optimal for management in units of tracks” and “an editing method that combines audio information and still image information that are optimal for management in units of tracks”. And “a display method for easily performing the above-described editing”.
[0010]
[Means for Solving the Problems]
An information medium according to an embodiment of the present invention includes an audio information area for storing one or more audio information in a predetermined track unit, and a management information area for storing management information regarding the track of the audio information. Configured to be able to. In this information storage medium, the management information area includes program chain information for managing the reproduction order of the audio information and a text data manager including one or more item texts. Here, the program chain information includes cell information relating to a cell as a playback unit, the cell information includes entry point information, the entry point information includes pointer information indicating the item text, and the entry point information includes the entry point information. Configured to include entry point type information indicating that it contains pointer information pointing to the item text.
In the embodiment of the present invention,
1. Program chain information (PGCI) indicating a playback procedure in management information related to audio information can be provided with break information of an audio track. That is, the break information of the audio track can be recorded in the PGCI.
[0011]
2. A program in original program chain information (ORG_PGCI), which is management information related to the original track, can be made to correspond to the original track.
[0012]
3. For the cell information in the user-defined PGC information table (UD_PGCIT) that is management information related to the playlist, the information of the track head entry point (C_EPI) indicating the break information of the audio track is recorded, and the information specific to each audio track is recorded. The track head entry point can also be provided.
[0013]
4). When the user specifies a still image to be displayed at the same time when playing an audio track, the display timing of each still image during audio information playback is automatically calculated from the playback time of the audio track and the set number of still images, and the display timing information is managed It can be automatically recorded in the information.
[0014]
5. The original list and playlist can be displayed on the screen at the same time (this is applicable not only to audio recording but also to video recording).
[0015]
6). By collecting some of the original tracks in the original list, a new track can be created on the playlist. In addition, the inside of the original track can be partially erased.
[0016]
In such a case, the following (A) and (B) can be selected according to the information content of the display mode of the original track. And during playback,
(A) All still images displayed during playback of the original track are used as still images displayed during playback of a new track on the playlist, or all still images displayed before partial deletion are displayed even after partial deletion. ;
(B) Of the still images displayed during original track playback, only still images within a specific range were used for still images displayed during playback of a new track on the playlist, or were displayed within a partial erase range. Still images are not displayed after partial erasure.
[0017]
It can be set as a still image for a new track on the playlist.
[0018]
7). An arbitrary screen of the movie object is extracted as a still image, and can be registered in the still picture AV file information table as a still image that can be displayed simultaneously with the audio object.
[0019]
8). In addition, the management information includes representative image designation information that is designated in units of tracks and indicates the track contents, and the representative image designation information is provided separately from the still image designation information that is displayed during audio track playback. To be able to.
[0020]
9. The display range information of the representative voice indicating the contents of the audio track can be provided in the area for recording the unique information for each audio track.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0022]
FIG. 1 shows an embodiment of the present invention. As shown in FIGS. 1A and 1B, a rewritable disc-shaped information storage medium 100 has a lead-in area 110, an area for volume / file configuration information 111, a data area 112, and a lead-out area 113. Has been. Further, as shown in FIG. 1C, a general computer information recording area 120 and an audio / video related information recording area 121 are included in a data area 112 which is an area where information can be recorded by a user in the information storage medium 100. It is a format that can coexist.
[0023]
Audio / video content information is called an object (Object). As shown in FIG. 1D, video content information is recorded in a VR_movie object recording area 131, and audio content information is recorded in an AR_audio object recording area 133. Is recorded in.
[0024]
In the embodiment of the present invention, not only can still images (still pictures) be displayed simultaneously with the reproduction of audio information, but also real-time text information (Real-Time Text) that changes in synchronization with audio information like a lyric card. Simultaneous display is possible.
[0025]
In the embodiment of the present invention, the still image is recorded in the AR_still picture object recording area 132 and recorded in the real-time text information and AR_real-time text object (AR_RtText Object) recording area 134.
[0026]
In the embodiment of the present invention, the voice information, the still picture information (still picture), and the real-time text information (Real-Time Text) are collectively referred to as “voice related information”. The contents of these object information (content information), attribute information, control information for display, and the like are collectively recorded in the management information recording area 130 shown in FIG.
[0027]
As shown in FIG. 1E, in the management information recording area 130, real-time audio management information (RTR_AMGI; general information of audio, attributes, etc.) 140, movie AV file information table (M_AVFIT; moving image recording position, etc.) 141), still picture AV file information table (S_AVFIT; information such as still image recording position) 142, audio AV file information table (A_AVFIT; information such as recording position of audio) 143, original PGC information (ORG_PGCI) 144 , User-defined PGC information (UD_PGCI) 145, text data manager (TXTD_MG) 146, and manufacturing information table (MNFIT) 147.
[0028]
The original PGC exists only in the information storage medium 100, and a plurality of user-defined PGCs can be set. Management information regarding each user-defined PGC is recorded in the first user-defined PGC information # 1/156 to the m-th user-defined PGC information # m / 157 (FIG. 1 (f)). Such information is centrally managed in the user-defined PGC information table 145.
[0029]
That is, the user-defined PGC information table information (UD_PGCITI) 150 indicates what kind of table is recorded in this table. User-defined PGC information (UD_PGCI) search pointers 151 and 152 for searching for PGC information are recorded.
[0030]
Each previous object information (content information) is recorded in one independent file for each object content.
[0031]
That is, as shown in FIG. All the still image information (still picture) is recorded in AR_STILL. ARO213 file, all real-time text information (Real-Time Text) is AR_RT_TEXT. These are recorded together in the ARO 222 file.
[0032]
In the embodiment of the present invention, one scene of a video in a video information file defined in the video recording standard is extracted as a still image and displayed simultaneously with audio information. The video information file VR_MOVIE. The VRO 212 is also recorded in the same DVD_RTAV directory 210. Information in the management information recording area 130 for managing these object files in an integrated manner is AR_MANGR. IFO211 file and its backup file AR_MANGR. Recorded in BUP 215.
[0033]
As shown in FIG. 1 (e), the framework of the data structure of management information recorded on an information storage medium that can record (or record) / reproduce audio related information is a video established by the DVD Forum with emphasis on compatibility. It has the same structure as the recording standard.
[0034]
Similar to the “Part 3 VIDEO RECORDING DVD Specifics for Rewritable / Re-recordable Discs” standard established in September 1999 by the DVD Forum, information indicating the playback procedure of audio-related information is PGC information 144 (original program chain), 145 (user-defined program chain).
[0035]
Here, the minimum basic unit that is continuously reproduced in the audio-related information for reproduction is called a cell, and a reproduction procedure that indicates the connection of the cells is constituted by a PGC (program chain).
[0036]
All the management information related to the cell is recorded in the first cell information # 1/164 to the sixth cell information # 6/169 (FIG. 1 (g), FIG. 8 (d)) recorded in the management information recording area 130. Has been. FIG. 1 (i) shows that audio tracks 1, 2, and 3 exist by editing, and FIG. 1 (h) shows a track head entry point (THEP or C_EPI) 171 that specifies the head of each audio track. , 172, and 173 are recorded. These track head entry points (THEP / C_EPI) 171, 172, 173 designate cell information for reproducing the object of each track.
[0037]
Next, the data structure of the management information related to the still image information (still picture object) displayed simultaneously with the reproduction of the audio information and the text information indicating the unique information for each track will be described with reference to FIGS.
[0038]
1 (a) to 1 (e) may be the same as (a) to (e) in FIGS. 3 to 5, respectively.
[0039]
The AR_AUDIO. Management information relating to audio information in the ARO 221 file is recorded in the audio AV file information table 143 as shown in FIG. In FIG. 3, parts corresponding to those in FIG.
[0040]
3 (e) to (i), A_AVFIT (audio AV file information table) 143, that is, management information related to audio is shown hierarchically. As shown in FIG. 3F, the audio AV file information table 143 includes an audio AV file information table information (AUD_FITI) 180, audio object stream information (AUD_STI) 181, 182 and audio AV file information (AUDFI) 184. , Real-time text object stream information 186, real-time text AV file information 189, and the like. As shown in FIG. 3G, the audio AV file information 184 includes audio AV file general information (AUDFI_GI) 190, audio object search pointers (AOBI_SRP) 191, 192, audio object information (AOBI) 196, 197, and the like. .
[0041]
As shown in FIG. 3 (h), the audio object information includes audio object general information (AOB_GI / AOBU_GI) 240, audio object unit entries (AOBU_ENT) 241 to 248, and the like. As shown in FIG. 3I, the audio object unit entry includes an audio object data size (AOBU_SZ) 251, an audio object unit presentation time (for example, 1 second corresponding to AOBU_SZ) 252, a real-time text position ( For example, 253) (indicated by a differential address).
[0042]
AR_RT_TEXT. Of FIG. Management information for real-time text information (information whose display content changes in synchronization with audio information) recorded in the ARO 222 file is also the audio AV file information table 143 (FIG. 3E). Real-time text object stream information (Real-Time Text Object Stream Information) # 1/186 (FIG. 3 (f)) and real-time text AV file information 189 (FIG. 3 (f)).
[0043]
When recording audio information on the disk-shaped information storage medium 100, a plurality of tracks are often recorded together. In this case, the audio information unit to be recorded at once is called an audio object (AOB).
[0044]
Management information of audio object information (AOBI # 1/196 to AOBI # i / 197 in FIG. 3G) is provided for each AOB. The audio information is divided into smaller units (audio object units) than the AOB in order to enable special reproduction such as high speed reproduction (Fast Front), rewind (Fast Reverse), and time search. Information on the data size (audio object unit data size AOBU_SZ251 in FIG. 3 (i)) and display required time (audio object unit presentation time 252) for each (audio object unit) is shown in FIG. 3 (h) as an audio object unit entry AOBU_ENT. # 1/241 to AOBU_ENT # h / 248 are recorded in the recording location.
[0045]
In the embodiment of the present invention, AR_RT_TEXT., In which real-time text information (Real-Time Text Object) to be displayed when audio information at the head position in each unit (audio object unit) is reproduced is recorded. The position (relative address) information in the ARO222 file is also included in the audio object unit entry AOBU_ENT # 1/241 to AOBU_ENT # h / 248 (FIG. 3 (h)) as the real-time text position information 253 (FIG. 3 (i)). It is recorded.
[0046]
The program chain (PGC) is a conceptual unit that indicates a track chain corresponding to a track set and a chain of some tracks corresponding to a playlist.
[0047]
The original PGC (ORG_PGC) indicates a track set that is a chain of tracks, and includes stream data stored in a “˜.ARO” file (see FIG. 2). One disc 100 has only one original PGC.
[0048]
The user-defined PGC (UD_PGC) is a chain that is part of a track. This UD_PGC includes only navigation data, and a part of the track refers to stream data belonging to ORG_PGC. Thus, creating or deleting any UD_PGC does not affect ORG_PGC.
[0049]
An audio object (AOB) is audio stream data in one real-time recording.
[0050]
The basic unit of this AOB is called an audio object unit (AOBU) composed of one or more audio frames and padding data. One audio frame is not included in two AOBUs. Padding data cannot exist in the middle of the AOBU, but can exist at the end of the AOBU.
[0051]
However, in the case of linear PCM, padding data can be placed in the middle of the AOBU in order to align the unit of the sample data with the boundary of the AOBU data pack.
[0052]
In other words, this pack can be filled with padding data so that the data pack of AOBU does not extend from one sample data unit of linear PCM to the next sample data unit.
[0053]
The AOBU playback period takes a constant value according to the encoding and sampling frequency of the audio elementary stream.
[0054]
For example, when the encoding is linear PCM and the sampling frequency is 48 kHz, 96 kHz, or 192 kHz, the AOBU playback period is exactly 1 second. That is, in this case, the AOBU has a size corresponding to 1 second.
[0055]
The audio still video object (ASVOB) refers to audio still video stream data that is played back along with the playback of the audio object (AOB).
[0056]
An audio still video unit (ASVU) is a set of one or more (up to 99) ASVOBs that are played while one or more tracks are being played. The ASVU can be preloaded into the memory (buffer) of the device before starting to play the track.
[0057]
From the viewpoint of the user, the program (PG) can be said to have a data structure corresponding to the original track. This PG is composed of one or more cells.
[0058]
A cell is a data structure for reproducing a part of a track. Cells in the original PGC are called original cells, and cells in the user-defined PGC are called user-defined cells. A track in a track set is composed of one or more original cells. Some of the tracks in the playlist are composed of one or more user-defined cells. This cell refers to a part or the whole of the AOB.
[0059]
An entry point (EP) refers to data that specifies how to reproduce within a cell. There are four types of entry points (EP for user-defined track; EP for index; EP for display list; EP for representative voice).
[0060]
Program chain information (PGCI) indicates a data structure for performing overall reproduction of PGC. This PGCI is used for both the original PGC and the user-defined PGC. The user-defined PGC has only PGCI, and cells in this PGCI refer to the AOB in the original PGC. The overall PGC playback method is described as a cell playback procedure defined in PGCI.
[0061]
The audio object information (AOBI) is a data structure for describing information related to the audio object (AOB).
[0062]
The audio still video unit information (ASVUI) is a data structure for describing information related to the audio still video unit (ASVU).
[0063]
As shown in FIG. 4F, the still picture AV file information table 142 includes an A_AVFIT information (ASVFFITI) 260, one or more still picture VOB stream information (ASV_STI) 261 to 262, and still picture AV file information (S_AVFI). / ASVFI) 264.
[0064]
As shown in FIG. 4G, the still picture AV file information 264 includes S_AVFI general information (ASVFI_GI) 270, one or more S_VOGI search pointers (ASVUI_SRO) 271 to 272, and one or more still picture VOB group information ( ASVUI) 273-279.
[0065]
As shown in FIG. 4 (h), the still picture VOB group information 273 includes still picture VOB group general information (ASVU_GI) 280 and one or more still picture VOB entries (ASVOB_ENT) 281 to 289.
[0066]
As shown in FIG. 4I, the still picture VOB entry (ASVOB_ENT) 281 includes still picture VOB entry type information (ASVOB_ENT_TY) 291 and the size of one still picture (or the size of the corresponding video part) (ASVOB_SZ). 292.
[0067]
When still image information is also recorded on the disk-shaped information storage medium 100, a plurality of still image information is often recorded at a time. Accordingly, still picture information to be recorded at a time is collectively referred to as a still picture VOB group, and management information regarding the still picture VOB group is included in the still picture VOB group information ASVUI # 1/273 to ASVUI # g / 279 (FIG. 4 (g)). Are managed in units of still picture VOB groups.
[0068]
Still picture VOB group information ASVUI # 1/273 to ASVUI # g / 279 still picture VOB entries ASVOB_ENT # 1/2811 to ASVOB_ENT # f / 289 (FIG. 4 (h)) data for each still image. The size (size of one still picture 292) is managed.
[0069]
Item text information is collectively recorded in the text data manager 146 as shown in FIG.
[0070]
As shown in FIG. 5F, the text data manager 146 includes text data information (TXTDTI) 231, one or more item text search pointers (IT_TXT_SRP) 232 to 233, and one or more item texts (IT_TXT) 236 to 238. Here, as shown in FIG. 5G, each item text (IT_TXT) 239 includes general text information.
[0071]
By collectively recording in this way, a search such as “text search” can be performed on the contents of all item texts (IT_TXT # 1/236 to IT_TXT ## e / 238 in FIG. 5F), and voice information search is performed. Useful for.
[0072]
In this specification, various data structures recorded in the storage medium (100) are shown hierarchically and are described in various directions in a plurality of drawings, but the corresponding parts are consistent. Are given the same reference numerals.
[0073]
For playback procedure information related to audio-related information,
1a. A reproduction procedure for reproducing in the order recorded on the information storage medium 100;
2a. Playback procedures that can be specified by the user
There are two ways,
1b. A name as management information regarding a playback procedure to be played back in the order recorded on the information storage medium 100 is called “original PGC”, and a name for the user is called “original track 1” as shown in FIG. Also,
2b. A name as management information relating to a playback procedure that can be arbitrarily designated by the user is called “user-defined PGC”, and a name for the user is called “playlist” as shown in FIG.
[0074]
Incidentally, CDs (compact discs), MDs (mini discs), cassette tapes, and the like have a management unit called a track set for each popular music piece or classical music movement. When the playlist (user-defined PGC) is created, the user combines, for example, a part of the original track named “A” and a part of the original track named “B” to create a new track named “C”. May be created.
[0075]
The row of picture 5 in FIG. 6A shows a “representative image” that is a still image showing the contents of each track. In the embodiment of the present invention, the still image that is initially displayed when audio information is reproduced is often used as the representative image. However, the present invention is not limited to this. It has become.
[0076]
Display mode 7 shows how to switch and the timing of still images to be displayed during audio information playback.
* As display order mode (Display Order Mode),
-Sequential (Sequential): a method of switching still images to be displayed according to a predetermined order;
Random (Random): A method of setting the display order of still images completely at random (in the worst case, the same still image may be displayed continuously);
Shuffle: A method of displaying the still images in a display order that is changed in the order specified in advance (the same still image is displayed only once in one cycle).
There is. Also,
* As the display timing mode (Display Timing Mode)
-Slideshow: a method for switching to the next still image at a predetermined timing;
-Browsable (Browsable): A method of switching to the next still image for the first time when the user switches on (the same still image is displayed until the user switches on)
There is.
[0077]
The display mode 7 is set for each track, and the display mode does not change within the same track.
[0078]
The time chart 11 is a visualization of a designated range when a user designates a part of an original track when creating a playlist.
[0079]
Here, the “original track” is a logical unit of continuously recorded contents. An original track corresponds to one track when copied from a digital source (such as a DC or DVD disc), and corresponds to one song when recorded from an analog source (such as a microphone or broadcast). When a part of the track is deleted, the total playback time of the original track decreases, but the original track remains as it is. When the original track is altered or generated as a result of editing the recorded content, the original track is defined as a logical unit that is continuously reproduced.
[0080]
The entire recorded content of the disc (100) composed of all tracks is represented by “track set”. This track set corresponds to a model that abstracts a continuous medium such as an audio tape. Thus, the playback of a track set is defined such that a continuous medium is simulated. Unless any of the original tracks is edited so that the playback order changes with respect to the original recording, when the track set is played back, the playback order of the original tracks is the same as the recording order of the original tracks. When the original track or a part of it is deleted, the total playback time decreases, but the track set remains as it is. When a new original track is recorded, it is added to the end of the track set. This track set corresponds to a data structure called an original PGC.
[0081]
A particular part (segment) of a track is called an “index”. Now assume that the track supports symphony. In this case, one movement of the symphony can be associated with the index. The starting point of the index part (segment) is indicated by an index point. The index point is automatically set by the device (or device) during recording using predetermined information such as index data of the source content. Alternatively, the index point is set by a user operation such as pause or stop recording. This index can be inherited from the original track in the track set, but can also be defined in the playlist.
[0082]
The subunit of the recorded content in the original track is called “part of track”. The part of track is a continuous part of the original track specified by the user. This abstraction (called part of track) is used only when defining the playlist itself. For this reason, there is no data structure that directly indicates the part of track.
[0083]
The list of part-of-tracks is called a “playlist”. The playlist is one in which an arbitrary reproduction procedure can be defined by the user, and each reproduction procedure can be regarded as an extracted part of the track set. A playlist is defined as a user-defined PGC.
[0084]
The user-defined PGC indicates a connection of a part of the program. A program is a logical unit of recorded content recognized or defined by a user. The program is composed of one or more original cells and is defined only in the original PGC. The user-defined PGC includes only navigation data, and each part of the program refers to stream data belonging to the original PGC. Therefore, the creation or deletion of the user-defined PGC has no effect on the original PGC.
[0085]
A specific part (segment) in the playlist is called a “user-defined track”. The user-defined track is a segment designated by the user in the playlist. The user can add multiple parts of track to the playlist. From the user's point of view, not all parts of a track necessarily belong to one song. Thus, the user can define the beginning of a song at the beginning of a specified part of track.
[0086]
The relationship between the management information related to the playlist created as described above and the original PGC is shown in FIG. 7, and AR_AUDIO. The relationship with ARO 221 is shown in FIG.
[0087]
In the upper part of FIG. 7, an ASVU buffer is shown as a temporary storage device. Reproduction data (ASVOBs) from the disc 100 is temporarily stored in this ASVU buffer. As shown in FIG. 7A, the data in the ASVU buffer can include a plurality of still pictures (No. 1 to No. 9). In the example of FIG. 1-No. 4 is the audio track number. 1 and still picture no. 5-No. 6 is the audio track number. 2 and still picture no. 7-No. 9 is the audio track number. Belongs to 3. In this case, for example, the audio track No. During reproduction of the still picture No. 1, 1-No. 4 can be displayed at a predetermined timing.
[0088]
As shown in FIG. 1 is accompanied by a track head entry point (C_EPI) # 1/171 and still picture entry points 21-23. Similarly, the audio track No. 2 includes a track head entry point (C_EPI) # 2/172 and a still picture entry point 24. 3 is accompanied by a track head entry point (C_EPI) # 3/173 and still picture entry points 25-26.
[0089]
As shown in FIG. 7 (d), track head entry points (C_EPI) # 1/171, # 2/172 and # 3/173 are respectively cell information (CI) # 1/164, # 4/167 and # 5/165 can be specified. Cell information (CI) # 2/165 can be specified by still picture entry points 21 and 22. Cell information (CI) # 4/167 can be specified by the still picture entry 24. Cell information (CI) # 6/169 can be designated by still picture entry points 25 and 26.
[0090]
In FIG. 7 (e), audio objects (AOB # 1 to # 5) are described for conceptual explanation, but audio object information (in FIG. 3 (g)) in which management information related to each AOB is recorded. Audio object entries # 1 to # 5 are recorded in AOBI # 1/196 to # i / 197).
[0091]
FIG. 7 (h) shows the original program chain 320. The first (# 1) program information, the second (# 2) program information, the third (# 3) program information, and the fourth (# 4) program information corresponding to this program chain are shown in FIG. It is shown. Original cell information 301, 302, 303, 304 and 305 corresponding to the program information is shown in FIG. Each of these original cell information corresponds to each piece of music (each object) of automatic, first love, in-my room, and another chance in FIG. 7 (e).
[0092]
In FIG. 7D, the first cell information # 1/164 designates part of the audio information of the track name (song name) “Automatic”, and the second cell information # 2/165 and the third cell information # 3/166 specifies the audio information of the track name (song name) “Another Chance”, and the fourth cell information # 4/167 specifies the audio information of the track name (song name) “In My Room” when editing Shows the case. In this case, if playback is performed according to the arrangement order of the cell information # 1/164 to # 6/169, a part of “Automatic” is played back and displayed, then “Another Chance” is played back and displayed, and then “In “My Room” will be played and displayed.
[0093]
The contents of FIGS. 8A to 8D may be the same as the contents of FIGS. 7A to 7D.
[0094]
As shown in FIG. 8D, AR_AUDIO. Information indicating which range in the ARO 221 file is reproduced in one cell is recorded in the cell information # 1/164 to # 6/169. The procedure for reproducing audio-related information to be reproduced according to one piece of PGC information is as shown in FIG. 1 (g), and is reproduced in the arrangement order of the cell information # 1/164 to # 6/169 constituting the PGC information 156. ·Is displayed.
[0095]
For example, as shown in FIG. 8 (d), cell information # 1/164 designates a part of audio information of a track name (song name) “Automatic”, and cell information # 2/165 and # 3/166 are “ When the audio information of the track name (song name) “Another Chance” is designated and the cell information # 4/167 designates the audio information of the track name (song name) “In My Room”, the cell information # 1 According to the arrangement order of / 164 to # 6/169, after playing and displaying a part of “Automatic”, “Another Chance” is played and displayed, and then “In My Room” is played and displayed. .
[0096]
As shown in FIG. 8E, in the embodiment of the present invention, one cell is an AR_AUDIO. Only the continuous playback range in the ARO 221 can be specified (in other words, it cannot be specified across the playback range existing in a stepwise manner in the AR_AUDIO.ARO 221). Therefore, in this case, a part of the original track named “A” is designated as one (user-defined) cell # 1 (first cell), and the original track named “B” A part is designated as another (user-defined) cell # 2 (second cell), and a new track named “C” is defined and managed as a combination of cell # 1 and cell # 2. Yes. This is the feature of this embodiment.
[0097]
Therefore, the embodiment of the present invention has a data structure in which one track is composed of a combination of one or more cells.
[0098]
As shown in FIG. 8D and as described above, in each cell information # 1/164 to # 6/169, the AOB (audio object) indicated by the corresponding cell, the start time and end time of the cell are shown as time information. It is recorded.
[0099]
When the designated cell is reproduced, it is reproduced within the designated time range in the designated AOB. For this time information, the audio object information # 1/196 to # i / 197 is used. Using the information of the audio object unit entries # 1/241 to # h / 248 (FIG. 3 (h)) recorded in the AR_AUDIO. After conversion to the relative address in the ARO 221, desired audio information is reproduced.
[0100]
Here, the reproduction start can be arbitrarily selected. When the user designates one of the track head entry points 171, 172, 173, any track of “Automatic” + “Another Chance”, “In My Room”, or “First Love” + “Another Chance” (editing) You can start from a later song. In this case, as a track after editing, No. 1, no. 2, no. Three examples of 3 are shown. A still picture can also be specified in association with the audio track.
[0101]
Next, management information for still image information (still picture object) displayed at the same time when audio information is reproduced is recorded in a still picture AV file information table (S_AVFIT) 142 shown in FIG.
[0102]
Cell information (CI) # 1/164 to # 6/169 corresponds to a part of each original track, and the cell information (CI) # 1/164 to # 6/169 includes the information in each track. Still picture entry points 21 to 26 (FIG. 7 (c) or FIG. 8 (c)) in which management information for still images to be displayed for the second and subsequent images are recorded exist.
[0103]
Each cell information (each CI # 1/164 to # 6/169) includes “designated information of corresponding audio object information (AOBI # 1/196 to # i / 197 in FIG. 3G)” and “ Information on each start and end time "is recorded, and audio object entries # 1 to # 5 in FIG. 7 (e) in corresponding audio object information # 1/196 to # i / 197 (FIG. 3 (h) ) AOBU_ENT # 1/241 to # h / 248), AR_AUDIO. An access address on the ARO 221 can be determined.
[0104]
In order to ensure compatibility with the video recording standard established by the DVD Forum, as a method for prescribing a track delimiter peculiar to audio information while maintaining the above data structure, in the embodiment of the present invention, “ In the PGC information, which is information indicating the playback procedure, information indicating the track break position for the audio information is recorded. This is the first major feature of the present invention.
[0105]
As a method for realizing this, in the embodiment shown in FIG. 1, cell information # 1/164, # 4/167, # 5/168, which are management information of cells existing at the reproduction start position for each track, are stored. The first (# 1), second (# 2), and third (# 3) track head entry points 171, 172, and 173 (or cell entry points C_EPI # 1 to # 3) are recorded therein. Is set, and the track-specific information shown in FIG. 9 is recorded therein.
[0106]
Information recorded in the track head entry points (C_EPI in FIG. 1H) # 1/171 to # 3/173 and the still picture entry points 21 to 26 shown in FIGS. 7C and 8C. The contents will be described with reference to FIG.
[0107]
“Information for specifying the storage location of a still image to be displayed” includes number designation information of still picture VOB group information (ASVUI) # 1/273 to # g / 279 shown in FIGS. Still picture VOB entries (ASVOB_ENT) # 1/281 to # f / 289 are used to designate corresponding still images.
[0108]
As shown in FIG. 9, the type of entry point includes a track head entry point (FIG. 1 (h), FIG. 11 (d)) or program information (FIG. 7 (g)). The contents of the entry point information of this entry point include entry point type information (FIG. 29 and other EP_TY; identification information of track head entry point or still picture entry point), and display of representative audio indicating the contents of the corresponding audio track. Information specifying the range (RA_DUR in FIG. 44; specified by the playback start time and playback end time in the corresponding audio track), information specifying the storage location of the representative image representing the contents of the corresponding audio track [ 29 and 50, the REP_PICTIS_VOB search pointer number (still picture VOB group number) and the VOB entry number in it are specified.
[0109]
Furthermore, the text information specific to the corresponding audio track (primary text information PRM_TXTI; song name, performer name, singer name, composer name, etc.), additional explanatory text information (central text information; item text IT_TXXT), in the corresponding audio track Still image display mode (display order mode, display timing mode), display time range information of the corresponding still image, relationship with the original track of the still image content to be displayed (the same still image as that of the original track is displayed) Or another unique still image (newly set) to be displayed) and an erase prohibition flag.
[0110]
Further, in the still picture entry point, entry point type information (identification information of track head entry point or still picture entry point), information specifying a storage location of a still image to be displayed [S_VOGI search pointer number (still picture VOB group) Number) and VOB entry number in it], timing designation information for displaying the above still image (for matching the display timing between the two by designating the corresponding audio object display time information) And display time range information of the corresponding still image. Of course, other information may be added.
[0111]
The present invention is not limited to the embodiment of FIG. 1, but instead of using the track head entry points (C_EPI in FIG. 1 (h)) 171-173, cell information # 1 of a cell located at the head of the track (not shown) / 164, # 4/167, # 5/168, “flag information indicating that the corresponding cell is arranged at the head position of the track” (when “flag = 1”, the corresponding cell is at the head position of the track) Exists, and when “flag = 0”, a corresponding recording area may exist in the second and subsequent tracks. Further, the method of recording the information of the contents shown in FIG. 9 in the general information recording area of each cell information (FIG. 1 (g)) # 1/164, # 4/167, # 5/168 is also available. It is contained in embodiment of invention.
[0112]
The display screen of the original track 1 in FIG. 6A and the data structure of management information corresponding thereto will be described with reference to FIG.
[0113]
All the information related to the original track 1 in FIG. 6A is managed in the original program chain information 144. The concept is schematically represented by an original PGC 320 shown in FIG. With respect to the original track, the program corresponds to each track, and 1 original track = 1 program. Information relating to each original track as shown in FIG. 9 is described in program information # 1/311 to # 5/305 which are management information recording areas relating to this program.
[0114]
One program is composed of one or more original cells, and management information recording areas of original cell information # 1/301 to # 5/305 exist for each original cell. In the original track 1 (original PGC 320), all the original cells # 1/301 to # 5/305 have a one-to-one correspondence with AOB # 1 to # 5, and 1 cell = 1 AOB. .
[0115]
The correspondence between FIGS. 6A and 6B and FIGS. 7 and 8 will be described below.
[0116]
The audio information of the track name (song name) “Automatic” shown in FIG. 6A is AR_AUDIO. It is recorded in AOB # 1 in the ARO221 file, management information relating to the original track is recorded in program information # 1/311, and information relating to reproduction is recorded in original cell information # 1/301.
[0117]
Similarly, the audio information of the track name (song name) “First Love” is AR_AUDIO. Recorded in AOB # 2 / in the ARO221 file, management information relating to the original track is recorded in program information # 2/312, and information relating to reproduction is recorded in original cell information # 2/302.
[0118]
The audio information of the track name (song title) called “Another Chance” immediately after recording was managed as one AOB, but part of the track was partially erased, so two of AOB # 4 and AOB # 5 The original cell information is divided into two pieces of original cell information # 4/304 and # 5/305 accordingly (FIG. 7 (e)). However, since the track itself does not change, only one program information # 4/314 is maintained.
[0119]
The user creates a new track in the playlist desired by the user by editing processing using the screen shown in FIG. For example, consider a case where a playlist # 1 (Play List) 2 is created as shown in FIG. In other words, the range from A to B of “Automatic” and all of “Another Chance” are connected to create a new track No. 1 and the still picture displayed during the music playback is No. 1 as a still picture shown in FIG. 1 to No. Set up to 4 cards.
[0120]
Next, a new track No. is obtained by changing the still image displayed by “In My Room”. 2, “First Love” from A to B and “Automatic” from C to D are connected. 7 to No. Set up three still images up to 9 and set the new track No. 3.
[0121]
FIG. 10 schematically shows this still image information designation method. The contents of (a) to (d) of FIG. 10 may be the same as the contents of (a) to (d) of FIG.
[0122]
In FIG. 10, all still images are grouped for each still picture VOB group (ASVU in FIG. 10 (f), FIG. 10 (e)) # 1 to #g, and the still picture object file AR_STILL. The management information of each still picture recorded in the ARO 213 (FIG. 10 (f)) is still picture in the still picture VOB group information (ASVU in FIG. 10 (e)) # 1/273 to # g / 279. It is recorded in picture VOB entries (ASVOB_ENT # in FIG. 10E) 281-299. Here, the cell information CI (FIG. 10C) can refer to the still picture VOB group (ASVU in FIGS. 10E and 10F) via various entry points (FIG. 10D). It has become.
[0123]
In addition, the movie object file VR_MOVIE. The VOR 212 (FIG. 10 (h)) transmits a still picture VOB group (for example, FIG. 10 (f)) via a predetermined still picture VOB entry (for example, # g-1 and # g-2 in FIG. 10 (g)). ASVU # g) can be referred to.
[0124]
“Information specifying the storage location of the still image to be displayed” in FIG. 9 includes track head entry points (C_EPI) # 1/171 to # 3/173 and still picture entry points 21 to 26 in FIG. 10 (FIG. 10D). ) To the still picture VOB entries 281 to 299 (ASVOB_ENT in FIG. 10E) corresponding to “solid line arrows”.
[0125]
Also, the “timing designation information for displaying a still image” designated in FIG. 9 designates the sequential mode (“Sequential Mode”) as the display order mode (Display Order Mode) and the slide show as the display timing mode (Display Timing Mode). Timing designation information that is valid when (“Slideshow”) is designated, and time information for switching the display to the still image designated by the still picture entry points 21 to 26 corresponding to the already displayed still image. means.
[0126]
In the display mode above
The time designated by the next still picture entry points 21 to 26, or
・ Time when the corresponding track ends
Until this time, the still image specified here continues to be displayed.
[0127]
In the present invention, the time information for switching the display is expressed by the reproduction time information (Presentation Time) of the audio information, but the present invention is not limited to this. For example, the difference time information from the reproduction start time of the corresponding track to the time when the display is switched to the specified still image can be used. The “display time range information of the corresponding still image” is valid when the display timing mode is designated as the browsable mode (“Browsable Mode”).
[0128]
When the user presses the switch, the still image displayed before is switched to the still image specified by the still picture entry points 21 to 26. However, if the user does not press the switch thereafter, the corresponding track ends. Will continue to display the same still image.
[0129]
When the maximum display time is set in “Display time range information for the corresponding still image”, if the user does not press the still image switching switch until that time, the display of the corresponding still image is automatically stopped. Thus, it is possible to perform processing such as switching the screen to “blue back”.
[0130]
Conversely, if the user accidentally keeps pressing the still image switching switch, the still images immediately change one after another, and the user cannot settle down and see the still image.
[0131]
If the minimum display time is set in “Display time range information for applicable still image”, the still image to be displayed will not be switched during the minimum display time set here even if the user continues to press the still image switch. Can be.
[0132]
Since the still image designated in the track head entry points 171 to 173 or the program information 311 to 314 is always displayed simultaneously with the start of reproduction of the corresponding track, the “timing designation information for displaying the still image” is unnecessary.
[0133]
In the present invention, in addition to being displayed simultaneously with the start of playback of the corresponding track, the “representative information for specifying the storage location of the representative image representing the contents of the corresponding audio track” is used to independently display the representative image for each track. It is possible to set.
[0134]
The still image specified by “information for specifying the storage location of the representative image representing the contents of the corresponding audio track” shown in FIG. 9 is displayed in the columns of pictures 5 and 6 in FIGS. Supports still images. Further, “information for specifying the storage location of the representative image representing the contents of the corresponding audio track” shown in FIG. 9 includes the track head entry points # 1/171 to # 3/173 and the still picture entry points 21 to 21 in FIG. 26 corresponds to the “dashed arrows” from the still picture VOB entries 281 to 299.
[0135]
As described above, the display mode 7 for the still image is set for each track, and the display mode does not change in the same track. Therefore, the track head entry points 171 to 173 or the program information 311 to 314 are stored as track specific information. To be recorded. The contents set in “display mode of still image in corresponding audio track (display mode)” in FIG. 9 are displayed in display modes 7 and 8 of FIGS.
[0136]
9 corresponds to the previously described primary text information 51 to 53 in FIG. 11E, and the “song name” in the information corresponds to the content of “text information unique to the corresponding audio track (primary text information)”. Is displayed in the “track title 3” column of FIG. “Additional explanation text information” in FIG. 9 goes from the track head entry points # 1/171 to # 3/173 in FIG. 11D described above to the item texts # 1/236 to # e / 238. Corresponding to the arrow, it has information content indicating “item text number”.
[0137]
The information content of “Relationship between still image content to be displayed and original track” in FIG. 9 is displayed in “Still 10” in FIG. 6B. That is, the new track No. in FIG. 1-No. 3 is the still image used in the original track 1 is used as it is (in this case, it is displayed as “original”), or the user's own separate from the still image used in the original track 1 (In this case, “Newly set” is displayed).
[0138]
In the present invention, the setting unit of whether it is an erasable area or an erasable area is set for each track. Accordingly, information with an “erasure prohibition flag” of “1” is set for an audio track for which deletion is prohibited.
[0139]
As shown in FIG. 9, track-specific entry information such as “song name”, “singer name”, and “performer name” is track head entry points (C_EPI) # 1/171 to # 3/173 (FIG. 9). 1 (h), FIG. 11 (d)). Primary text information in the track head entry points (C_EPI) # 1/171 to # 3/173 is used as a place for recording text information with a relatively small amount of data such as “song name”, “singer name”, “player name”. There are recording areas named 51-53.
[0140]
On the other hand, information that is unique information for each track but has a large amount of data and cannot be recorded in the primary text information 51 to 53 is designated by item text (item text search pointer number IT_TXT_SRPN) as shown in FIG. IT_TXT) # 1/236 to # e / 238 (FIG. 11 (f)). In the track head entry point (C_EPI in FIG. 11D) # 1/171 to # 3/173, a pointer having information (IT_TXT_SRPN table) indicating what item text (IT_TXT) is indicated. Only the information is recorded.
[0141]
FIG. 12 shows the setting state of still images in the program information # 1/311 to # 4/314.
[0142]
FIG. 12A shows a still picture corresponding to the original audio track (FIG. 12B), and FIG. 12C shows the original program chain.
[0143]
Here, program information corresponds to each original audio track. In the program information (FIG. 12D) # 1/311 to # 4/314, information (REP_PICTI) 41 to 44 designating representative images indicating the contents of the respective audio tracks is recorded. The still picture VOB entry (ASVOB_ENT # or ASVOB_ENTN) # 1/281 to # p + 1/296 (FIG. 12 (g)) can be directly specified. FIG. 12G shows another file, which is still picture VOB group information (ASVUI 273, 274; or ASVUN).
[0144]
Original cell information (CI in FIG. 12E) # 1/301 to # 5/305 does not have track head entry point information, and all still pictures (including still images displayed at the start of audio track playback). Only the entry points (C_EPI in FIG. 12F) 31 to 39 are included.
[0145]
The management information includes representative image designation information (REP_PICTI in FIG. 12D) 41 to 44, which is designated in units of tracks and functions as representative image designation information indicating the track contents.
[0146]
Further, the representative image designation information is provided separately from the still picture designation information displayed during audio track reproduction. For this reason, an arbitrary still image in a VOB group in a different place other than the video object (VOB) group in which a still image to be held during audio track playback is recorded can be set as a representative image, increasing the degree of freedom. be able to.
[0147]
FIG. 13 shows still another embodiment or an embodiment coexisting with the above embodiment. Here, the setting state of the text information in the program information (PGI) # 1/311 to # 4/314 is shown in FIG. “Text information unique to the corresponding audio track” in FIG. 9 is included in primary text information (PRM_TXTI) 56 to 59 in program information (PGI) # 1/311 to # 4/314 as shown in FIG. To be recorded.
[0148]
“Additional explanation text information” in FIG. 9 corresponds to an “arrow” heading to item texts # 1/236 to # e / 238 (or IT_TXT239) in FIG. Information “IT_TXT_SPRN” is recorded.
[0149]
In the above description, the recording / management location of the specific information related to the audio track as shown in FIG.
• Record and manage in the program information for the original track; or • Record and manage in the track head entry point for the playlist.
Explained the case.
[0150]
However, the present invention is not limited to the above method, and the recording / management place of the specific information regarding the audio track is reversed, or both are recorded in the same place and managed.
[0151]
That is, the program information exists in the user-defined PGC for the playlist, and a method for recording and managing the unique information regarding the audio track as shown in FIG. 9 in the program information in the user-defined PGC is also provided. Included in range.
[0152]
FIG. 14 shows the structure of the information recording / reproducing apparatus according to the present invention.
[0153]
The disk drive unit 409 records and reproduces information with respect to the information storage medium 100. Various object information input from various input means 440 to 442, 412, and 413 is encoded by the encoder unit 401 and then recorded on the information storage medium 100 via the disk drive unit 409. At the same time, management information related to the object information is created in the main MPU unit 404 and recorded on the information storage medium 100 via the disk drive unit 409.
[0154]
As an input means, there are a microphone 441, an A / V input unit 412, a key input unit 442, a TV tuner unit 413, and a digital camera 440. There is also a set top box (STB) unit 403 that receives broadcast signals. The encoder unit 401 is either an analog / digital (A / D) conversion unit 414 to which an A / V input is given, an output signal (video signal) of the A / D conversion unit 414, or an output video signal 423 from the STB unit 403. A selector 415 is provided for arbitrarily selecting.
[0155]
The video encoding unit 416 encodes the video signal from the selector 415 for compression encoding in accordance with, for example, the MPEG standard, and supplies the encoded signal to the formatter unit 419. The audio encoding unit 417 performs, for example, MPEG or PCM processing on the audio signal from the A / D conversion unit 414 and supplies the processed signal to the formatter unit 419. Information from the key input unit 442 is input to a real-time text (RT_TEXT) encoding unit 418 and input to the formatter unit 419 as text data. A buffer memory unit 420 is connected to the formatter unit 419, and is used for time adjustment when input data is converted into a predetermined format.
[0156]
The output of the formatter unit 419 (information converted into a predetermined format) is associated with the management information by the digital processor (D-PRO) unit 410 and recorded in the information storage medium 100 via the disk drive unit 409. . A temporary storage unit 411 is connected to the D-PRO unit 410 and functions as buffering for data processing. Further, the D-PRO unit 410 performs addition of an error correction code, modulation processing, and the like.
[0157]
Management information is created in the main MPU unit 404. The management information read from the information storage medium 100 is also decoded by the main MPU unit 404. The main MPU unit 404 includes an audio related data creation control unit, an audio related data reproduction control unit, an audio related data partial erasure control unit, and a work RAM unit. Further, a display unit 408 is connected to the main MPU unit 404, and a key input unit 407 for controlling this apparatus is also connected.
[0158]
When the information in the information storage medium 100 is reproduced, the recorded information is read by, for example, an optical information reading unit of the disk drive unit 409, and a photoelectrically converted signal is introduced into the D-PRO unit 410. The reproduction information is input to the separation unit 425 of the decoder unit 402 and separated into video information, audio information, and text information.
[0159]
The video information is led to the video decoding unit 428 and decoded, the audio information is led to the audio decoding unit 430 and decoded, and the text information is led to the text decoding unit 429 and decoded.
[0160]
The output video signal from the video decoding unit 428 and the output text from the text decoding unit 429 are input to a video processing (V-PRO) unit 438. The video signal output from the video processing unit 438 is converted into an analog signal by the digital / analog conversion unit 436 via the video (V) mixing unit 405 and supplied to the television display 437.
[0161]
The video mixing unit 405 can also synthesize the video signal from the STB unit 403. A frame memory unit 406 is connected to the video mixing unit 405. The output of the video mixing unit 405 can be further supplied to the personal computer 435 via the interface 434.
[0162]
In the audio decoding unit 430, the audio signal is decoded, and the decoded output can be derived as a digital output via the interface 431. The decoded output is supplied to the speaker 433 via the digital / analog converter 432. An audio signal can also be input from the STB unit 403 to the digital-analog converter 432.
[0163]
The system clock unit 450 generates a clock for obtaining synchronization of the entire STB unit 421, decoder unit 402, encoder unit 401, main MPU unit 404, and the like. The system clock unit 451 generates a reference clock for synchronizing the reproduction information with the decoder unit 402 during disk reproduction.
[0164]
During reproduction, the management information recorded in the information storage medium 100 via the disk drive unit 409 is temporarily recorded in the work RAM unit in the main MPU unit 404. Using the management information temporarily recorded in the work RAM unit, the object information to be reproduced recorded on the information storage medium 100 is read and further decoded by the decoder unit 402, and then the decoded output is output to the speaker 433, the television. The data is output to the display 437 or the display unit 408.
[0165]
A method for creating a playlist related to audio-related information including a user interface and the detailed structure of management data created as a result will be described below.
[0166]
When the user creates a playlist, the display unit 408 in FIG. 14 displays a list of original tracks 1 as shown in FIGS. 6A and 6B and playlist # 1 (Play List) 2 that the user intends to create. The feature of the embodiment of the present invention is that the convenience of the user is enhanced by displaying both.
[0167]
Next, a method for recording voice related information on the information storage medium 100 will be described with reference to FIGS.
[0168]
In most processes in the present invention, information in the management information recording area 130 recorded on the information storage medium 100 is read and temporarily recorded in the work RAM section in the main MPU section 404 (step S1 in FIG. 15). . Then, after a series of processes, a process of recording management information recorded in the work RAM unit and partially changed in content on the information storage medium 100 (step S12 in FIG. 16) is performed.
[0169]
In the embodiment of the present invention shown in FIG. 15 and FIG. 16, first, the audio information is stored in AR_AUDIO. Additional recording is performed after the ARO 221 file (step S2), and thereafter, the management information in the work RAM section is rewritten. To change the management information content, first, management information related to audio information is added and changed in the audio object information.
[0170]
That is, in step S3, program information, original cell information, and audio object information are created in the main MPU unit 404 in accordance with the audio track recorded in step S2, and additionally recorded in the work RAM unit.
[0171]
In step S4, AR_AUDIO.ID for each audio object unit is recorded on the recorded audio track. The relative address in the ARO 221 is checked and additionally recorded in the audio object information in the work RAM section.
[0172]
Next, the user is inquired whether to set a still image (still picture) to be displayed simultaneously with the audio information (step S5). If a still image is not displayed simultaneously with audio reproduction (No in step S5), the process jumps to step S11 in FIG. Even when setting a still image to be displayed at the same time as audio playback,
(1) When recording a new still image simultaneously with recording of audio information (Yes in step 6),
... A still image to be newly recorded is stored in AR_STILL. The information is recorded in the ARO 213 file, and the still picture management information still picture VOB group information is created correspondingly. That is, still picture information is recorded in the AR_still picture object recording area 132 (added to the rear end of the AR_STILL.ARO213 file), and still picture VOB group information is created accordingly and added to the work RAM section (FIG. 16). Step S7).
[0173]
(2) When using a still image already recorded on the information storage medium 100 (No in step 6),
... The user selects a still image to be displayed simultaneously with the audio information (step S8 in FIG. 16). In other words, the user selects a still image to be displayed simultaneously on the corresponding audio track from the still picture VOB group already recorded in the information storage medium 100.
[0174]
Choose one of the methods.
[0175]
The information content of “designation information for displaying a still image” set as a still picture entry point is set in the main MPU unit 404 of the information recording / reproducing apparatus in FIG.
[Display time per still image] = [Reproduction time of the corresponding audio track] / [Number of still images displayed in the corresponding audio track]
Is calculated, and the calculation result is automatically set (the calculation result for the “still image display timing designation information” in the still picture entry points 31 to 39 temporarily recorded in the work RAM section). Value is recorded) (step S9).
[0176]
Next, the information recorded in the program information 311 to 314 and set for each audio track is “information specifying the storage location of a representative image representing the contents of the corresponding audio track”, “text information unique to the corresponding audio track”, Information on "additional explanation text information", "display mode of still image in corresponding audio track", and "erase prohibition flag" is requested to be input by the user (steps S10 and S11).
[0177]
That is, in step S10, the user sets “representative image for corresponding audio track” as “still image display mode”, and the information is stored in program information 311 to 314 temporarily stored in the work RAM unit. Record.
[0178]
Next, in step S11, the user inputs “primary text information” and “item text information” using the key input unit 407, and the information is temporarily recorded in the primary text information 56˜ 59 and item texts 236 to 238, and pointer information to the item text is also recorded.
[0179]
Although not shown, when the unique information for each audio track is recorded in the program information 311 to 314 (step S10), the “display range of the representative voice indicating the contents of the corresponding audio track” shown in FIG. The time from the reproduction start time of the corresponding audio track to a specific time (for example, 5 seconds) is automatically recorded in the “information”. In order to change this time range, the user can reset the display range of the representative voice during the editing process.
[0180]
The management information related to the voice related information is completed by the series of processes described above, and the management information is recorded on the information storage medium 100 via the disk drive unit 409 (step S12).
[0181]
A method for partially erasing an original track in the present invention will be described. As shown in FIGS. 7E and 7F, when the central portion of the original track having the track name (song title) called “Another Chance” is partially erased, the audio object is divided into two as AOB # 4 and # 5. Correspondingly, audio object information, original cell information # 4/304, and # 5/305 are divided into two. A processing method in the information recording / reproducing apparatus at that time will be described with reference to FIGS.
[0182]
The partial erasure of the original track will be described in more detail with reference to FIGS.
[0183]
In step S 21, the information in the management information recording area (RTR_AMG) 130 in the disk 100 is read by the disk drive unit 409 and temporarily recorded in the work RAM unit in the main MPU unit 404.
[0184]
In step S22, the user designates a range for partially erasing the original track (designated by time information).
[0185]
In step S23, the audio object information including the original track specified by the user is divided into two parts before and after the partial erasure range specified by the user. The existing audio object information is used for the audio object in the first half (before the part to be erased), and unnecessary audio object unit entries are deleted (main MPU unit 404). Similarly, one audio object information is newly created for the audio object in the second half (after the part to be erased), and the corresponding part is copied from the original audio object unit entry and recorded in the work RAM unit. .
[0186]
In step S24, the AR_AUDIO. The partial erase range in the ARO221 file is erased.
[0187]
In FIG. 17, when the user designates the partial erasure range with time information (step S22), the management information content is correspondingly changed (step S23), and AR_AUDIO. The corresponding part in the ARO 221 is deleted (step S24).
[0188]
In step S25 of FIG. 18, the still image displayed in the partial erasure range designated by the user is displayed after partial erasure from the display mode information relating to the still image information recorded in the program information relating to the corresponding original track. Is determined in the main MPU unit 404.
[0189]
When the corresponding still image is displayed after partial erasure (Yes in step S26), the display time of the audio track after partial erasure is divided by the number of sex images to be displayed, and the display time per still image is calculated. Then, the content of “designation information for displaying a still image” in the still picture entry points 31 to 39 temporarily recorded in the work RAM section is changed (step S27).
[0190]
Conversely, when the corresponding still image is not displayed after partial erasure (No in step S26), the user selects from the still picture entry points 31 to 39 before partial erasure recorded in the original cell information 301 to 305. The information of the still picture entry point included in the designated partial erasure range is deleted (step S28).
[0191]
In the next step S29, the management information temporarily recorded in the work RAM is rewritten to the management information recording area 130 in the information storage medium via the disk drive unit 409.
[0192]
Here, the handling of the still image displayed in the partial erasure target range becomes a serious problem. As a method of handling still images after this partial erase,
(A) Regardless of the location of partial erasure, all still images before partial erasure are displayed during audio information reproduction after partial erasure (step S27)
In this case, the “designation information for displaying a still image” in FIG. 9 is recalculated and automatically rewritten.
[0193]
(B) The still image displayed only in the partial erasure location is not displayed during reproduction after partial erasure (step S28).
[0194]
These two methods are selected in the embodiment of the present invention.
[0195]
At this time, determination information on whether or not the still image displayed only in the partial erasure location (displayed partial still image) can be displayed is recorded in advance in the management information, and based on that information Either (A) or (B) is selected (step S26 in FIGS. 17 and 18). This is the first feature of the editing method according to the embodiment of the present invention.
[0196]
A second feature of the present invention is that the determination information is information that can be recognized by the user. If the situation is recognizable by the user, the user can understand which one of (A) and (B) is selected, and the user's confusion can be avoided. In the present invention, the display mode 7 shown in FIG. 6A is used as the determination information recognizable by the user.
[0197]
That is, when the display mode 7 of the original track 1 displays “Slideshow + Sequential” (the same information is recorded in the “display mode of the still image in the corresponding audio track” in the program information at that time). Only when the above (B) is selected and other information is recorded, (A) is selected.
[0198]
Here, before explaining the playlist content creation method, the display screen creation method shown in FIGS. 6A and 6B, which is a feature of the present invention, will be described with reference to FIG.
[0199]
First, the information in the management information recording area 130 recorded on the information storage medium 100 is read and temporarily recorded in the work RAM section in the main MPU section 404 (step S31).
[0200]
The management content related to the original track 1 whose playback procedure is shown in the order recorded in the information storage medium 100 is recorded in the original program chain information 144 or 320. 1 / 311- # 4/314 ((h) (g) in FIG. 7).
[0201]
Further, as described above, information regarding the tracks in the playlist is recorded in the track head entry points 171 to 173 in the user-defined PGC information table 145. Using the information, a list screen relating to the original track 1 is created in the main MPU unit 404 (step S32), and a list screen for each track relating to the playlist # 1 (Play List) 2 is created individually (step S33). ) The two screens are combined (step S34) and displayed (step S35).
[0202]
Next, with reference to FIG. 19, a creation processing method of the playlist creation display screen as shown in FIGS. 6A and 6B will be described.
[0203]
Information in the management information storage area 130 in the disk is read by the disk drive unit 409 and temporarily stored in the work RAM unit in the main MPU unit 404 (step S31). Next, the main MPU unit 404 interprets information related to the original track recorded on the disc 100 from the information content of the program information 311 to 314 temporarily stored, and creates display screen content related to the original track 1 (step S32). ). Next, the main MPU unit 404 uses the information of the track head entry points 171 to 173 in the cell information 164 to 169 constituting the temporarily stored user-defined PGC information table 145, and relates to the track for each playlist. Information is extracted, and display screen contents relating to the playlist 2 are created (step S33).
[0204]
Next, the display screens created in step S32 and step S33 are combined and transferred to the V mixing unit (step S34). Then, the display screen created inside the main MPU unit 404 is displayed on the display unit 408 via the D / A converter 436.
[0205]
With reference to FIG. 20 and FIG. 21, the method of creating a playlist in the present invention will be further described.
[0206]
Information in the management information recording area 130 is read and temporarily recorded in the work RAM section in the main MPU section 404 (step S41).
[0207]
Next, the editing screen (original track 1, playlist screen) is displayed to the user by the method shown in FIG. 19 (step S42), and the user creates a playlist (step S43). Here, the user inputs the relationship between the new track and the original track that are newly created while viewing the screen.
[0208]
The display mode is automatically set to match the display mode specified in the original track to be reproduced first, but can be changed later while the user looks at the screen. At the same time, the user is asked to input unique information regarding the newly created track on the playlist (step S44).
[0209]
In other words, in this step, the display mode 8 (FIG. 6 (b)) relating to the new track newly created while the user looks at the display screen, the representative image, and the still image setting conditions (in the original case, the original track is set In the case of a new set that displays the same image as the still image, the user inputs a new still image).
[0210]
Next, in the main MPU unit 404 of the information recording / reproducing apparatus shown in FIG. 14, new cell information is created and information in the track head entry point is recorded based on the input information (step S45). ).
[0211]
That is, in this step, cell information 164 to 169 is newly set in the corresponding user-defined PGC information 156 and 157 in the work RAM section, and cell information for the cell located at the head in the new track set by the user. Inside, track head entry points 171 to 173 are additionally written.
[0212]
Next, the display mode designated by the user, representative image designation information, and the representative audio display range are additionally written in the track head entry points 171 to 173 (step S46).
[0213]
As the display range of the representative sound in step S46, the time from the reproduction start time of the newly created new track to a specific time (for example, 5 seconds) is automatically recorded. If it is desired to change this time range, the user can reset the display range of the representative voice during the editing process.
[0214]
When the user newly sets a still image to be displayed simultaneously with playback for the newly created new track (step S47), the still 10 in FIG. (Original) "is changed to" Newly Set "and the user selects a still image (step S48). That is, the user selects a still image to be displayed simultaneously with the display of the newly created new track from the existing still picture VOB group information 273 to 279.
[0215]
If the user does not designate a new still picture to be displayed (No in step S47), it is determined whether or not all still pictures in the original track should be displayed (step S49). When all the still pictures of the original track are to be displayed (Yes in step S49), the process proceeds to (A) below. If all the still pictures of the original track are not displayed (No in step S49), the process proceeds to (B) below.
[0216]
In the embodiment of the present invention, the following two methods (A) and (B) are selected as methods for setting a still image (still picture) when creating a playlist.
[0217]
(A) Regardless of the designated place in the original track by the user, all the still images held by the related original track are displayed when the new track in the playlist is played back (step S51).
[0218]
For example, when a new track is created from three original tracks, all still images displayed when the three original tracks are reproduced are displayed when the new track is reproduced.
[0219]
(B) Only the still image displayed when the designated place in the original track quoted for creating a new playlist is reproduced is displayed when the new track is reproduced (step S50).
[0220]
At this time, determination information as to which method is to be used is recorded in advance in the management information. One of (A) and (B) is selected based on the determination information (step S49 in FIGS. 20 and 21). The first feature of the editing method of the present invention is as follows.
[0221]
A second feature of the present invention is that the determination information is information that can be recognized by the user. If the situation is recognizable by the user, the user can understand which one of (A) and (B) has been selected, and the user's confusion can be avoided.
[0222]
In the present invention, the display mode 7 shown in FIG. 6A is used as the determination information recognizable by the user. That is, the original track 1 that quotes the audio information to be reproduced first when the new track is reproduced (for example, in the example of FIGS. 6A and 6B, the new track No. 1 means “Automatic” of the original track, In track No. 3, the display mode 7 of “First Love” of the original track displays “Slideshow + Sequential” (“Display of still image in corresponding audio track” in the program information at that time) The above (B) is selected only when the same information is recorded in “mode”, and (A) is selected when other information is recorded.
[0223]
After the processing in step S50 or S51, the main MPU unit 404 divides the display time of the corresponding new track by the number of still pictures to be displayed in the new track, and calculates the display time per still picture (step). S52). The calculated value is recorded in “still picture display time designation information” in the still picture entry points 21 to 26 and the track entry points 171 to 173. These entry points are temporarily recorded in the work RAM of the MPU unit 404.
[0224]
Then, the management information temporarily recorded in the work RAM is rewritten in the management information recording area 130 of the disc 100 via the drive 409.
[0225]
Although not shown in FIGS. 20 and 21, immediately after the setting of “designation information for displaying a still image” (step S 52), the information is recorded in the track head entry point corresponding to the newly created track. "Text information unique to the audio track" and "text information for additional explanation" are automatically transcribed into information in the original track 1 that refers to the audio information to be reproduced first when a new track is reproduced. The text information is rewritten by the key-in operation (step S53).
[0226]
22 and 23 show processing procedures when video information is used as still image information that is displayed simultaneously with audio information.
[0227]
Information in the management information storage area 130 is read and temporarily recorded in the work RAM section in the main MPU section 404 (step S61 in FIG. 22). Next, the screen of the original track 1 and the playlist is displayed by the method shown in FIG. 19 (step S62). The user designates a track for simultaneously displaying still image information extracted from the video information while viewing the display screen (step S63).
[0228]
Next, the user designates a scene to be extracted as still image information from the video information (video information in the VR_MOVIE.VRO212 file in which the movie object information is recorded) while viewing the display screen (step S64).
[0229]
The screen information specified in this step is extracted as a still image. The still image is a still picture object file AR_STILL on the information storage medium 100 from the disk drive unit 409 via the video mixing unit 405 from the V_PRO unit 438. . It is recorded as part of the ARO 213 (step S65).
[0230]
Next, in response to the still image extracted in this step and recorded on the disc, new still picture VOB group information # g / 279 and still picture VOB entry # 1 are stored in the work RAM section in the main MPU section 404. / 298 and # 2/299 are recorded (step S66 in FIG. 23).
[0231]
Next, in step S63, the still image information created in step S66 is created in step S66. The picture VOB entries are changed to # 1/298 and # 2/299 (step S67).
[0232]
Next, the display time of the corresponding track is divided by the number of still images to be displayed in the track, the display time per still image is calculated, and the result is stored in the still picture entry point 24 temporarily stored in the work RAM unit. Are recorded in the “designation information for displaying a still image” in the track head entry point 172 (step S68).
[0233]
Then, the management information temporarily recorded in the work RAM section in the main MPU section 404 is rewritten to the management information recording area 130 via the disk drive section 409 (step S69).
[0234]
As shown in FIG. 10H, VR_MOVIE. Recorded video information (movie object). A feature of the embodiment of the present invention is that any video screen in the VRO 212 file can be used as a still image to be displayed simultaneously when reproducing audio information. The specific method will be described with reference to FIG. 10, FIG. 22, and FIG.
[0235]
First, a list of audio tracks recorded on the information storage medium 100 is displayed to the user as shown in FIGS. 6 (a) and 6 (b), and the user specifies the track for which a still image is to be set (step). S63). Next, VR_MOVIE. While displaying the video information recorded in the VRO 212 file, the user designates a desired screen (scene) (step S64). Since the screen (scene) designated by the user has already been decoded in the decoder unit 402 in FIG. 14, the image information is used as it is as a still image (I picture) in the AR_STILL. It is recorded in the ARO 213 file (step S65) and management information related to it is created (step S66). Therefore, display relation information between the created still image and audio information is recorded in the track head entry point # 2/172 or the still picture entry point 24.
[0236]
A general user sets a desired screen (scene), but often does not set the display timing. Accordingly, the value of “designation information for displaying a still image” (FIG. 9) is automatically set in the main MPU unit 404 in the information recording / reproducing apparatus shown in FIG. 14 (step S68 in FIGS. 22 and 23). However, there is a feature of the information recording / reproducing apparatus according to the present invention.
[0237]
In particular
[Display time per still image] = [Reproduction time of the corresponding audio track] / [Number of still images displayed in the corresponding audio track]
Calculate automatically as
[0238]
In the original PGC 320 that manages the information of the original track, information on the original track shown in FIG. 9 is recorded in the program information # 1/311 to # 4/314.
[0239]
A method for reproducing audio-related information recorded in the information storage medium 100 by the above method will be described with reference to FIGS.
[0240]
Information in the management information recording area 130 is read and temporarily stored in the work RAM section in the main MPU section 404 (step S71). Next, information on the original track recorded in the information storage medium is interpreted from the program information 311 to 314 temporarily recorded in the work RAM unit, and the display screen content on the original track 1 is created (step S72). .
[0241]
Next, information regarding the track for each playlist is extracted from the information of the track head entry points 171 to 173 in the cell information 164 to 169 constituting the user-defined PGC information table 145 temporarily recorded in the work RAM unit. Display screen contents relating to list 2 are created (step S73).
[0242]
Next, the display screens created in steps S72 and S73 of FIG. 24 are combined and transferred to the V mixing unit (step S74). Further, the display screen is displayed on the display unit 408 via the D / A converter 436 (step S75).
[0243]
The screen shown in FIGS. 6A and 6B is displayed by the method shown in FIG. 19, and the user designates the track to be reproduced (step S76).
[0244]
In step S77 in FIG. 25, specifically, the representative audio is obtained from the track head entry points 171 to 173 or “information specifying the display range of the representative audio indicating the contents of the corresponding audio track” in the program information 311 to 314. Read the playback start time and playback end time.
[0245]
Also, in step S78, AR_AUDIO.audio in which the information of the representative audio is recorded using the information of the audio object unit entries 241 to 248 in the audio object information 196 to 197. The playback start address and playback end address in the ARO 221 are calculated.
[0246]
In step S79, the predetermined address range is reproduced and output as a sound. The user listens to the representative sound and determines whether or not the audio track he / she wants to hear. After confirmation, the reproduction range is designated and the reproduction button is pressed (step S80).
[0247]
Further, it is determined which range in the original PGC information 144 or the user-defined PGC information 156 and 157 corresponds to the track range designated by the user from the management information temporarily stored in the work RAM section (step S81).
[0248]
Then, object information is reproduced for each track unit from the disc in accordance with the arrangement order of the program information 311 to 314 in the original PGC information 144 or the user-defined PGC information 156 and 157 or the arrangement order of the cell information 164 to 169, and Is output and displayed (step S82).
[0249]
According to the method shown in FIGS. 24 and 25, the user can confirm in advance whether or not it is the song that the user really wants to hear by listening to the representative voice before selecting the song that the user wants to hear. That is, when the audio track to be confirmed is designated and the user presses the representative audio playback button, the main MPU unit 404 starts from “information for designating the representative audio display range indicating the reproduction content of the corresponding audio track” (step S77). ), Using the audio object unit entry (AOBU_ENT) # 1/241 to # h / 248, AR_AUDIO. The address to be accessed in the ARO 221 is calculated (step S78), and the audio information is reproduced from the information storage medium and displayed (step S79).
[0250]
As described above, in the embodiment of the present invention, it is determined to which part in each object file the range set by the user in the main MPU unit 404 in the information recording / reproducing apparatus corresponds (step S77). Play and display based on. At this time, object information is transferred from the information storage medium 100 in units of tracks in accordance with the arrangement order of the program information 311 to 314 existing in the original program chain information 144 or the user-defined PGC information 156 and 157 or the arrangement order of the cell information 164 to 169. Play every time. This is a feature of the embodiment of the present invention.
[0251]
The main points executed in the above-described embodiment of the present invention are summarized as follows.
[0252]
Audio line break information is recorded in the PGCI. Text information and a representative image of the track are included in the track break information. Program information is recorded for each original track.
[0253]
The track head entry point in the cell information represents a track break. Playback is performed for each track in accordance with the order of program information / cell information described in PGCI. Each display timing is automatically calculated according to the still image designated by the user. A display method that simultaneously displays the original list and playlist on the screen (also aimed at adapting RTR).
[0254]
Furthermore, using the information of the original track, an editing method for creating a track on the playlist; deciding which still image of the original track is pasted to the track of the playlist; leaving which still image is displayed after partial erasure It is possible to extract an arbitrary screen of a movie object as a still image and edit it to display it simultaneously with an audio object.
[0255]
FIG. 26 shows an example of the data structure of a part (UD_PGCIT 145 in FIG. 1E) of the real-time recording audio manager (RTR_AMG 130 in FIG. 1D).
[0256]
As shown in FIG. 26, the real-time recording (RTR) audio manager RTR_AMG (130 in FIG. 1D) includes RTR audio manager information RTR_AMGI, an audio file information table AUDFIT, an audio still video file information table ASVFIT, and an original. Program chain information ORG_PGCI (144 in FIG. 1 (e)), user-defined PGC information table UD_PGCIT (145 in FIG. 1 (e)), text data manager TXTDT_MG (146 in FIG. 1 (e)), manufacturer information And table MNFIT (147 in FIG. 1E).
[0257]
The user-defined PGC information table UD_PGCIT includes user-defined PGC information table information UD_PGCITI (150 in FIG. 1 (f)) and one or more user-defined PGC information search pointers UD_PGCI_SRP # 1 to #n (151-f in FIG. 1 (f)). 152) and one or more pieces of user-defined PGC information UD_PGCI # 1 to #n (156 to 157 in FIG. 1 (f)).
[0258]
There are two types of PGC information. The first is an original PGC managed by ORG_PGCI, and the second is one or more user-defined PGCs managed by UD_PGCIT.
[0259]
The original PGC describes a reproduction procedure of the content (cell) recorded first (as an original). The user-defined PGC describes a playback procedure obtained when the user freely changes (or modifies) the playback order of cells (contents recorded first).
[0260]
FIG. 27 shows an example of the data structure of program chain information (PGC information) included in the real-time recording audio manager (RTR_AMG) of FIG.
[0261]
As shown in FIG. 27, PGC information (ORG_PGCI or one UD_PGCI) #i includes PGC general information PGC_GI (160 in FIG. 1G; see FIG. 48) and one or more pieces of program information PGI # 1 to #n. (Refer to FIG. 49), one or more cell information search pointers CI_SRP # 1 to #n (161 to 162 of FIG. 1 (g)), and one or more cell information CI #. 1 to #n (164 to 169 in FIG. 1G or FIG. 7D).
[0262]
Each cell information CI includes cell general information C_GI and one or more pieces of cell entry point information C_EPI # 1 to #n (171 to 173 in FIG. 1H or entry points in FIG. 7C).
[0263]
Although not shown, the cell general information C_GI includes the following information items:
(1) C_TY describing the format of the corresponding cell (for example, “010b” is described in C_TY1 for an audio cell);
(2) PB_INF describing reproduction information of the corresponding cell (for example, dynamic range control on / off information and dynamic range control value);
(3) AOBI_SRPN describing the AOBI search pointer number for the corresponding AOB of the cell;
(4) ASVUI_SRPN describing the ASVUI search pointer number for the corresponding ASVU of the cell;
(5) ASV_DMD describing the display timing mode (display timing mode) and display order mode (display order mode) of the ASVU corresponding to the cell;
(6) C_EPI_Ns describing the number of the cell entry point C_EPI;
(7) C_A_S_PTM describing the playback start time of the cell;
(8) C_A_E_PTM describing the playback end time of the cell.
[0264]
28A and 28B show examples of entry points in the original PGC and the user-defined PGC, respectively.
[0265]
FIG. 28A illustrates an entry point in the original PGC. Here, three programs PG # 1 to # 3 are shown, and each program has only one cell. A total of seven entry points are illustrated for the cell of PG # 1. Three entry points (1) to (3) for PG # 1 are for the index, and the other four entry points [1] to [4] are for the display list.
[0266]
The index entry points of PG # 1 to PG # 3 are indicated by arrows on the square frames of PG # 1 to PG # 3, and the index numbers indicating these entry points are indicated by numbers surrounded by circles. . That is, the index entry point includes an index number value as additional information.
[0267]
The arrows below the corner frames of PG # 1 to PG # 3 indicate the entry points of the display list. When there is an audio still video (ASV) to be reproduced together with audio data, the corresponding track has information regarding the number of the audio still video unit (ASVU) that includes the audio still video to be reproduced together. Each entry point has information regarding the number of audio still video objects (ASVOB) in the designated ASVU. The designated ASVOB is reproduced at the entry point timing.
[0268]
FIG. 28A shows an example of the slide show / sequential mode. In the case of slide show / random or shuffle, each entry point has no information regarding the number of ASVOB. This is because the number of ASVOB to be reproduced is determined randomly or shuffled. When the ASV display mode of the corresponding track is the browserable mode, the entry point timing information for the audio still video (ASV) is all set to zero. This is because in the browserable mode, the user can skip to the next or previous audio still video at any timing, so that predetermined timing information is not required.
[0269]
FIG. 28B illustrates an entry point in the user-defined PGC. In the case of a user-defined PGC, the PGC does not have a program (PG) structure but only a cell structure. For this reason, the user-defined track is not realized by the program (PG) structure. Therefore, in the case of the user-defined PGC, a new entry point <T> is introduced for the user-defined track.
[0270]
FIG. 28B illustrates three cells (cell # 1 to cell # 3). The illustrated cell # 1 and cell # 2 have a new entry point <T> for the user-defined track. In the example of FIG. 28B, cell # 1 corresponds to one user-defined track, and cell # 2 and cell # 3 correspond to other user-defined tracks. The entry point for the user-defined track is set at the start point of the corresponding cell.
[0271]
The index entry point and the display list entry point are the same as in the original PGC (FIG. 28A).
[0272]
In FIG. 28, numbers (1 to 5) or letters (T) with downward arrows correspond to the track head entry points in FIG. 7 (c), and numbers (1 to 4) with upward arrows are This corresponds to the still picture entry point in FIG.
[0273]
FIG. 29 exemplifies the contents of the cell entry point information (C_EPI of type A1; see C_EPI # of FIG. 27 or FIG. 1H).
[0274]
As shown in FIG. 29, type A1 C_EPI includes the following information items:
(1) EP_TY describing the format of the entry point (this EP_TY is composed of EP_TY1 and EP_TY2. Type A1 is specified by a combination of EP_TY1 = "01b" and EP_TY2 = "00b");
(2) EP_PTM describing the playback time of the entry point (all bytes of this EP_PTM are set to “00h”);
(3) PRM_TXT describing the primary text information of the entry point (PRM_TXT is divided into two subfields: the first 64 byte field is used to describe the primary text, for example in the ASCII character set, and the last 64 bytes Fields are used to describe primary text in the character set defined in RTR_AMGI shown in FIG. 26 and others);
(4) IT_TXT_SRPN describing the search pointer information (search pointer number) of the item text IT_TXT where the text data corresponds to the entry point;
(5) REP_PICTI describing representative image information (see FIG. 50).
[0275]
Note that EP_TY of type A1 corresponds to EP_TY described in the first paragraph of the information content of the table shown in FIG.
[0276]
The EP_PTM of type A1 corresponds to the EP_PTM described in the eighth paragraph of the information content of the table shown in FIG.
[0277]
Further, PRM_TXT of type A1 corresponds to PRM_TXTI described in the fifth paragraph of the information content of the table shown in FIG.
[0278]
Further, IT_TXT_SRPN of type A1 corresponds to IT_TXT_SRPN described in the sixth paragraph of the information content of the table shown in FIG.
[0279]
Furthermore, REP_PICTI of type A1 corresponds to REP_PICTI described in the third paragraph of the information content of the table shown in FIG.
[0280]
FIG. 30 shows an example of the data structure of the other part (AUDFIT 143 in FIG. 3E) of the real-time recording audio manager (RTR_AMG 130 in FIG. 3D).
[0281]
As shown in FIG. 30, the audio file information table AUDFIT in RTR_AMG includes audio file information table information AUDFTI (180 in FIG. 3 (f)) and one or more audio stream information AUD_STI # 1 to #n (FIG. 3 ( f) of 181 to 182), one or more pieces of downmix coefficient information DM_COEFI # 1 to #n, and audio file information AUDFI (184 of FIG. 3 (f)).
[0282]
Although not shown, AUDIFTI includes the following information items:
(1) AUDFI_Ns describing the number of audio file information AUDFI;
(2) AUD_STI_Ns describing the number of audio stream information AUD_STI;
(3) DM_COEFI_Ns describing the number of downmix coefficient information DM_COEFI;
(4) AUDFIT_EA describing the end address of the audio file information table AUDFIT in terms of the relative number of bytes from the first byte of AUDFIT.
[0283]
AUDFI_Ns indicates the number of audio files (AR_AUDIO.ARO221 in FIG. 2), but since the maximum number of audio files is “1”, the value of AUDFI_Ns is “0” or “1”. The maximum number of AUD_STI_Ns is “64”, and the maximum number of DM_COEFI_Ns is “16”.
[0284]
Although not shown, each AUD_STI includes the following information items:
(A) A_ART describing the audio attributes of AOB referring to AUD_STI;
(B) TXT_ART describing text attributes (for example, ASCII text) of the real-time text data RT_TXTDT included in the AOB referring to the AUD_STI.
[0285]
The A_ART includes the following information items:
(A1) Audio coding mode indicating linear PCM mode, packed PCM mode (lossless compression mode), etc .;
(A2) Q of CH_GR1 describing the quantization word length (16 bits, 20 bits, 24 bits, etc.) of channel group 1 (CH_GR1) to which the source data of linear PCM audio or packed PCM audio belongs;
(A3) Q of CH_GR2 describing the quantization word length (16 bits, 20 bits, 24 bits, etc.) of channel group 2 (CH_GR2) to which the source data of linear PCM audio or packed PCM audio belongs;
(A4) CH_GR1 describing the sampling frequency (48 kHz, 96 kHz, 192 kHz, 44.1 kHz, 88.2 kHz, 176.4 kHz, etc.) of channel group 1 (CH_GR1) to which the source data of linear PCM audio or packed PCM audio belongs fs;
(A5) CH_GR2 describing the sampling frequency (48 kHz, 96 kHz, 192 kHz, 44.1 kHz, 88.2 kHz, 176.4 kHz, etc.) of channel group 2 (CH_GR2) to which the source data of linear PCM audio or packed PCM audio belongs fs;
(A6) A multi-channel type to which the source data of linear PCM audio or packed PCM audio belongs and describing the format of the multi-channel source related to the following:
* Channel assignment including the number of channels;
* Downmix method (only for linear PCM);
(A7) Channel assignment describing the assignment of each channel belonging to linear PCM audio data or packed PCM audio data in AOB.
[0286]
The real-time text data (RT_TXTDT) can be recorded, for example, in the AR real-time text object recording area 134 of FIG.
[0287]
Although not shown, the downmix coefficient information DM_COEFI includes a downmix coefficient table DM_COEFT. The contents of DM_COEFT can be used when determining a coefficient for downmixing multi-channel linear PCM audio data into two channels. This information is only used when the audio data is coded with linear PCM.
[0288]
The same DM_COEFI may be shared by a plurality of AOBs.
[0289]
As shown in FIG. 30, audio file information AUDFI includes audio file information general information AUDFI_GI (190 in FIG. 3G) and one or more audio object information search pointers AOBI_SRP # 1 to #n (FIG. 3G). 191 to 192) and one or more pieces of audio object information AOBI # 1 to #n (196 to 197 in FIG. 3G).
[0290]
Although not shown, AUDFI_GI includes pointer number information AOBI_SRP_Ns describing the number of AOBI search pointers AOBI_SRP. Note that the maximum number and the minimum number of audio objects AOB in the audio file are “1” and “999”, respectively.
[0291]
The search pointer AOBI_SRP includes AOBI_SA in which the start address of AOBI is described by the relative number of blocks from the first byte of AUDFIT.
[0292]
Each audio object information AOBI includes AOB general information AOB_GI and AOB unit information AOBUI.
[0293]
Although not shown, AOB_GI includes the following information items:
(1) Describes the type of AOB. AOB_TY including a temporary erase flag TE (TE = “0b” indicates that the corresponding AOB is in a normal state, and TE = “1b” indicates that the corresponding AOB is in a temporary erase state. An AOB in the temporary erase state is not referred to by a cell in the user-defined PGC, and an AOB in the temporary erase state is not reproduced in a normal reproduction operation such as track reproduction. );
(2) AOB_CNT describing the contents of the corresponding AOB (such as AUD_STI number AUD_STIN, CH_GR2 bit shift, stereo playback mode, DMCOEFI number DMCOEFIN, DMCOEFIN validity describing whether DMCOEFIN is valid);
(3) AOB_REC_TM describing the recording time of the corresponding AOB (time when the head of the audio data of the AOB is recorded);
(4) AOB_REC_TM_SUB describing a sub-second for AOB_REC_TM (1 second or less);
(5) AOB_A_S_PTM describing the playback start time (encoded with playback time stamp PTS) of the first audio frame of the AOB (if the AOB has no PTS, the playback start time is calculated according to the MPEG standard) ;);
(6) AOB_A_E_PTM describing the playback end time of the last audio frame of the AOB.
[0294]
As shown in FIG. 30, the AOBUI includes audio object unit general information AOBU_GI and one or more AOBU entries AOBU_ENT # 1 to #n (241 to 248 in FIG. 3H).
[0295]
Although not shown, AOBU_GI (also corresponding to 240 in FIG. 3 (h)) includes the following information items:
(1) AOBU_PB_TM describing the playback time of one AOBU;
(2) AOBU_SZ describing the size of the AOBU (this size is specified by the number of data packs in the AOBU);
(3) L_AOBU_PB_TM describing the playback time of the last AOBU in the AOB;
(4) L_AOBU_SZ describing the size of the final AOBU in the AOB;
(5) AOBU_ENT_Ns describing the number of AOBU entries in the AOBUI;
(6) AR_AUDIO. AOB_SA that describes the start address of the AOB in terms of the number of relative logical blocks from the first logical block of the ARO file (221 in FIG. 2).
[0296]
Since the AOBU playback time is 1 second or less, AOBU_PB_TM describes the shortage of the AOBU playback time from 1 second.
[0297]
FIG. 31 illustrates the contents of the audio object unit entry (AOBU_ENT) corresponding to AOBU_ENT # n (n is an integer) in FIG. 30 or 241 to 248 in FIG.
[0298]
As shown in FIG. 31, each AOBU_ENT includes AOBU_SZ describing the size of the corresponding AOBU. This AOBU size can be specified by the number of data packs in the corresponding AOBU. If each pack is 2048 bytes (or 2 kbytes), the AOBU size is an integer multiple of 2048 bytes (or 2 kbytes).
[0299]
FIG. 32 illustrates the concept of AOBU access for reproducing the contents (audio frames) of the audio object unit AOBU.
[0300]
In the example of FIG. 32, AR_AUDIO. Three AOBs (AOB # 1 to # 3) are recorded in the ARO file. By specifying the relative logical block number in this file, the head data of each AOB can be accessed. For example, to access AOB # 2, the start address of AOB # 2 is described in the data field of AOBI for AOB # 2. The start address of AOB # 1 is “0” as the relative logical block number in this file.
[0301]
AOB # 2 in FIG. 32 includes a series of AOBUs starting from AOBU # 1. Each AOBU is composed of a sequence of consecutive packs. Here, the pack is a unit including audio and text data divided for multiplexing. AR_AUDIO. In an ARO file, all packs are recorded continuously as seen by the relative block number in the file. For example, in order to access the start address of AOBU # i in AOB # 2, it is necessary to acquire the start address of AOBU # i. For this purpose, calculation is performed to add the relative start address in AOB # 2 to the start address of AOB # 2. This is the basic mechanism for accessing the AOBU using the AOBI data structure.
[0302]
It should be noted that AR_AUDIO. AOB files AOB # 1, # 2, # 3,... Correspond to 196 to 197 in FIG. Also, AOBU # 1, # 2, # 3,... In the AOBU data structure in FIG. 32 correspond to 241 to 248 in FIG. Further, the information 251 in FIG. 3I corresponds to AOBU # i (i = 1, 2, 3,...).
[0303]
Depending on the playback start time and playback end time, playback for AOB and AOBU can be arbitrarily designated.
[0304]
The playback start time of AOB and AOBU can be specified by using a time stamp described in the data pack of the corresponding AOB. For example, the head audio frame of the audio pack in each AOBU has playback time information in a PTS field of a packet header (not shown). In order to decode and reproduce AOB or AOBU data, a reference clock (for example, STC1 in FIG. 14) in a decoder (for example, 402 in FIG. 14) is described in a leading pack (not shown) from which reproduction starts. Set to the SCR value. Then, the clock count is automatically started. Based on this clock, AOB or AOBU is reproduced.
[0305]
FIG. 33 illustrates the concept of an AOBU entry (AOBU_ENT #).
[0306]
When the audio elementary stream is coded at a variable bit rate, an AOBU entry having a structure for storing the size information of each AOBU is prepared for each AOBU. This is because the number of AOBU data packs is not fixed in variable bit rate coding.
[0307]
On the other hand, in the case of a fixed bit rate, the AOBU entry is not defined. AOBU entries associated with the AOB are described in order of increasing playback time of the corresponding AOBU.
[0308]
In order to minimize the table size, each AOBU entry has only information on the number of packs (AOBU_SZ in FIG. 33). By using this information (AOBU_SZ # i), it becomes possible to calculate which AOBU corresponds to a predetermined reproduction time. This is because the playback time of each AOBU is always constant except for the final AOBU.
[0309]
FIG. 34 shows an example of the data structure of the other part (ASVFIT 142 in FIG. 4E) of the real-time recording audio manager (RTR_AMG 130 in FIG. 4D).
[0310]
As shown in FIG. 34, the audio still video file information table ASVFIT (142 in FIG. 4 (e)) includes the audio still video file information table information ASVFITI (260 in FIG. 4 (f)) and the audio still video stream information ASV_STI. # 1 to #n (261 to 262 in FIG. 4 (f)) and audio still video file information ASVFI (264 in FIG. 4 (f)).
[0311]
Although not shown, ASVFITI includes the following information items:
(1) ASVFI_Ns describing the number of audio still video file information ASVFI;
(2) ASV_STI_Ns describing the number of audio still video stream information ASV_STI;
(3) ASVFIT_EA describing the end address of the audio still video file information table ASVFIT with a relative block number from the first byte of ASVFIT.
[0312]
Each audio still video stream information ASV_STI includes a video attribute V_ATR. This V_ART describes video attributes of one or more audio still video units (ASVU) that refer to the corresponding ASV_STI.
[0313]
Although not shown, V_ATR includes the following information items:
(A) Video compression mode indicating MPEG-1, MPEG-2, etc .;
(B) TV system showing 525/60 (NTSC), 625/50 (PAL), etc .;
(C) aspect ratio indicating 4: 3, 16: 9, etc .;
(D) Video resolution such as 720 × 480, 544 × 480.
[0314]
As shown in FIG. 34, audio still video file information ASVFI includes ASVFI general information ASVFI_GI (270 in FIG. 4 (g)) and one or more ASVUI search pointers ASVUI_SRP # 1 to #n (271 in FIG. 4 (g)). 272) and one or more pieces of ASVU information ASVUI # 1 to #n (273 to 279 in FIG. 4G).
[0315]
Although not shown, ASVFI_GI includes ASVUI_SRP_Ns describing the number of ASVUI search pointers ASVUI_SRP. The minimum number of ASVUs in the audio still video file is “1”, and the maximum number is “999”.
[0316]
Although not shown, each ASVUI_SRP includes ASVUI_SA describing the start address of the audio still video unit information ASVUI with a relative block number from the first byte of the corresponding ASVFIT.
[0317]
As shown in FIG. 34, ASVU information ASVUI includes ASVU general information ASVU_GI (280 in FIG. 4 (h)) and one or more audio still video object entries ASVOB_ENT # 1 to #n (281 to 281 in FIG. 4 (h)). 289).
[0318]
Although not shown, ASVU_GI includes the following information items:
(1) ASVOB_Ns describing the number of ASVOBs in the ASVU;
(2) ASV_STIN describing the ASV_STI number of the ASVU (note that one or more ASVUs can share the same ASV_STI);
(3) FIRST_ASVOB_REC_TM describing the time when the first ASVOB in the ASVU was recorded;
(4) LAST_ASVOB_REC_TM describing the time when the last ASVOB in the ASVU was recorded (in the same ASVU, LAST_ASVOB_REC_TM comes after FIRST_ASVOB_REC_TM);
(5) AR_STILL. ASVU_SA describing the start address of ASVU with the relative logical block number from the first logical block of the ARO file (213 in FIG. 2).
[0319]
Although not shown, each ASVOB_ENT includes the following information items:
(A) ASVOB_ENT_TY describing the format of the ASVOB entry;
(B) ASVOB_SZ describing the size of ASVOOB in terms of the number of logical blocks.
[0320]
Note that ASVOB_ENT_TY includes a temporary erase flag TE. (TE = "00b" indicates that the corresponding ASVOB is in the normal state, and TE = "01b" indicates that the corresponding ASVOB is in the temporary erase state.)
FIG. 35 illustrates the contents of the audio still video object entry (ASVOB_ENT) corresponding to ASVOB_ENT # n (n is an integer) in FIG. 34 or ASVOB_ENT # 1 in FIG.
[0321]
As shown in FIG. 35, ASVOB_ENT includes the following information items:
(A) ASVOB_ENT_TY describing the format of the ASVOB entry;
(B) ASVOB_SZ describing the size of ASVOOB in terms of the number of logical blocks.
[0322]
ASVOB_ENT_TY includes a temporary erase flag TE. TE = "00b" indicates that the corresponding ASVOB is in the normal state, and TE = "01b" indicates that the corresponding ASVOB is in the temporary erase state.
[0323]
FIG. 36 shows an example of the data structure of an audio still video object (ASVOB).
[0324]
As shown in FIG. 36, AR_STILL. Each ASVU (here, ASVU # 2) of the ARO file is composed of one or more ASVOBs (here, ASVOB # 1 to #n). Each ASVOB (here, ASVOB # 2) includes a dummy pack, one or more video packs V_PCK, and a logical block for an MPEG program end code. There is only one dummy pack at the start of ASVOB. This dummy pack has a system header and some additional information (not shown, but recorded information including ISRC code, copy management information, etc.). The video pack V_PCK conforms to the MPEG program stream and includes only an I picture of MPEG video data followed by a sequence end code. Each ASVOB ends with a logical block of MPEG program end code.
[0325]
Note that the ASVUs shown in FIG. 36 correspond to 273 to 279 in FIG. Also, ASVOBs shown in FIG. 36 correspond to 281 to 289 in FIG.
[0326]
FIG. 37 illustrates the concept of ASVOB access. ASVU and ASVOB in FIG. 37 correspond to ASVU and ASVOB in FIG. 36, respectively.
[0327]
The audio still video ASV refers to still picture data to be reproduced together with audio data by an audio player capable of reproducing video (abbreviated as VCAP). The audio still video object ASVOB is composed of only one still picture without buttons (visual items for user selection). The audio still video unit ASVU is an aggregate of one or more (up to 99) ASVOBs.
[0328]
In addition, ~. In accessing the ASVOB recorded in the ARO file, information called ASVUI is used to obtain address information related to the file. Each ASVUI is composed of address information of ASVOB included in the corresponding ASVU.
[0329]
FIG. 37 illustrates the basic concept of accessing an ASV and its ASVOB. In the example of FIG. 37, three ASVUs (ASVU # 1 to # 3) are AR_STILL. It is recorded in the ARO file. Here, ASVU # 2 is composed of a series of ASVOB sequences starting from ASVOB # 1. In order to access ASVOB # i in ASVU # 2, the player (VCAP) uses AR_STILL. The start address of ASVU # 2 in the ARO file and the start address of ASVOB # i in ASVU # 2 are acquired. Then, the player adds up the two obtained start addresses, and AR_STILL. Get the start address of ASVOB # i in the ARO file.
[0330]
FIG. 38 shows an example of the data structure of still another part (TXTDT_MG146 in FIG. 5E) of the real-time recording audio manager (RTR_AMG 130 in FIG. 5D).
[0331]
As shown in FIG. 38, the text data manager TXTDT_MG includes text data information TXTDTI (231 in FIG. 5 (f)) and one or more item text search pointers IT_TXT_SRP # 1 to #n (232 to FIG. 5 (f)). 233) and one or more item texts IT_TXT (236 to 238 in FIG. 5 (f)).
[0332]
Although not shown, TXTDTI includes the following information items:
(1) CHRS describing a character set code (ASCII code or the like) used in TXTDT_MG;
(2) IT_TXT_SRP_Ns describing the number of IT_TXT_SRPs;
(3) TXTDT_MG_EA describing the end address of TXTDT_MG with a relative block number from the first byte of TXTDT_MG.
[0333]
Although not shown, each IT_TXT_SRP includes the following information items:
(A) IT_TXT_SA describing the start address of IT_TXT with a relative block number from the first byte of TXTDT_MG;
(B) IT_TXT_SZ representing the size of IT_TXT in bytes.
[0334]
IT_TXT describes the item text with the character code specified by the above-mentioned CHRS.
[0335]
The embodiment of the present invention has several functions and data structures such as a representative image, a disk representative image, a disk representative name, a resume marker, and primary text information used in a player menu (see FIG. 6). ing.
[0336]
The resume marker holds information on a position where reproduction is interrupted by a stop operation. By using this information, even if the disc 100 is once ejected from the disc drive 409 in FIG. 14 and then reinserted, the reproduction can be resumed accurately from the place where the reproduction was interrupted.
[0337]
Each track and playlist of the disc 100 itself can have a representative image. These representative images can be used so that the user can easily identify the target track, the target playlist, or the target disc. Any audio still video included in the disc 100 can be defined as a representative image for a track and / or a playlist, and can also be defined as a disc representative image for that disc.
[0338]
Many of these functions and data structures can be treated as options. Therefore, there may be a recorder or player that does not have these functions or data handling functions.
[0339]
FIG. 39 shows an example of using primary text information (such as PRM_TXT in FIG. 29).
[0340]
As shown in FIG. 39, the primary text can be used to describe a track, a playlist, and / or an index entry point, and can be used to identify or identify them. The primary text information PRM_TXTI can be described in two types of character sets (ASCII and one or more other character sets). The ASCII character set is supported as a common character set used for worldwide use of the disk 100.
[0341]
As an example of the text shown on the track set or the monitor TV screen, there is the text of the track title 3 in FIG.
[0342]
In the example of FIG. 39, the player collects PRM_TXTI for all tracks # 1 to # 3 and then creates a menu (displayed on the monitor TV screen of FIG. 39). As a result, the user can easily select a track to be reproduced. For example, the primary text “Symphony No. 9” for track # 1, the primary text “Piano Concerto” for track # 2, and the primary text “Feast of Chorus” for track # 3 are displayed in a menu, and the user can select from this menu. For example, “Piano Concerto” can be selected. By this selection, the contents of track # 2 recorded on the disc are reproduced.
[0343]
Further, the disk 100 can have a disk representative name (for example, “my disk”, “sister disk”, “brother disk”, etc.). This disk representative name can be used to identify a particular disk (eg, “My Disk”). For example, equipment (multi-disc compatible recorder / player) that can handle many discs (“My disc”, “My sister's disc”, “Brother disc”) uses this information (disc representative name). The target disk (for example, “my disk”) can be identified from the plurality of disks set.
[0344]
FIG. 40 is an explanatory diagram of audio and audio still video (ASVOB) playback.
[0345]
The ASVOB in FIG. 40 is a still picture No. in FIG. 1-No. 9 is supported. Also, the audio playback block of FIG. 1-No. 3 blocks are supported.
[0346]
The playback of the audio still video ASV is defined by the entry point of the display list in the original PGC or user-defined PGC. An audio still video object (ASVOB) is defined as reproduction data.
[0347]
The audio still video unit ASVU is a collection of one or more (up to “99”) ASVOBs that are played while one or more cells (or tracks) are being played. This ASVU is prefetched into the memory (ASVU buffer) before the cell playback is started. The player may mute the audio output while capturing ASVU.
[0348]
One or more ASVUs can be recorded on the disc 100, and the size of each ASVU is 2 Mbytes or less.
[0349]
Since all ASVOB data in the ASVU is held in the ASVU buffer, various playback functions can be realized with respect to the display order and display timing of the ASVOB. For example, a slide show and a browsable picture can be implemented by using an ASVU buffer. The display timing of each ASVOB held in the ASVU buffer can be freely determined by, for example, the main MPU unit 404 of FIG.
[0350]
FIG. 41 illustrates the structure of the original PGC (ORG_PGCI in FIG. 26).
[0351]
41 correspond to the program information 311 to 314 in FIG. 7G. The programs # 1, # 2,... In the PGCI in FIG. 41 in the PGCI correspond to the original cell information 301 to 305 in FIG. 7 (f). AR_AUDIO. Of FIG. AOB # 1, # 2,... In the ARO file correspond to AOB # 1, # 2,. Also, AR_AUDIO. The ARO file corresponds to the file 221 in FIG.
[0352]
As shown in FIG. 41, the original PGC is composed of PGCI, one or more AOBIs, and one or more AOBs. PGCI consists of a program chain, and each program consists of one cell or a sequence of one or more cells. Therefore, the reproduction of the entire original PGC is a cell reproduction sequence. The cell playback order is the same as the order of cell information described in PGCI.
[0353]
In order to enable reproduction of each cell, the cell information (CI) includes information on the AOB number and reproduction start time. This reproduction start time is shorter than the reproduction period of the first AOBU. Therefore, AOB playback is started from the beginning of the AOB or the middle of the beginning AOBU.
[0354]
Unless editing such as partial erasure is performed, each cell refers to the playback period of the entire AOB in the original PGC. After some editing, the cells in the original PGC need not refer to the entire AOB. This is because the AOBU boundary does not provide sufficient carving resolution. The required accuracy is at least the duration of the coding block. However, all AOBUs except the last AOBU in the AOB have a certain playback period. Therefore, the AOBU including the segmentation end portion (after editing) remains in the new AOB, and the cell refers to the segment of the AOBU.
[0355]
On the other hand, the AOBU including the carving start part does not need to remain as a whole AOBU. Accordingly, the AOBU segment after the carving start part is deleted, and the segment before the carving end part remains in the new AOB.
[0356]
here,~. In order to access the AOBU recorded in the ARO file, AOBI is used to obtain address information about the file. There are two types of AOBI. One is for constant bit rate coding and the other is for variable bit rate coding. When coding at a fixed bit rate, the size of each AOBU except the final AOBU is constant. On the other hand, when coding at a variable bit rate, the size of each AOBU is different. However, the playback period of each AOBU excluding the final AOBU is constant regardless of whether the bit rate is constant or variable.
[0357]
Once the AOB is created, The AOB created at the end of the ARO file is added. In many cases, the program accompanying the AOB is added to the end of the PGCI.
[0358]
FIG. 42 shows a structure example of the user-defined PGC (UD_PGCIT in FIG. 1 or FIG. 26).
[0359]
The cells in PGCI # n of the user-defined PGC # n shown in FIG. 42 correspond to the cell information CI in FIG. 7 (d). Further, AOBI in FIG. 42 corresponds to AOBI in FIG.
[0360]
As shown in FIG. 42, the user-defined PGC # n is generated so that the cell in the PGC refers to the AOB in the original PGC. The user-defined PGC # n has four cells (# 1 to # 4). Two of them refer to AOB # 1, and the other two refer to AOB # 2. A downward arrow from the cells in the user-defined PGC toward the original PGC indicates the playback period of these cells. The cell playback order in the user-defined PGC may be completely different from the playback of the original PGC.
[0361]
FIG. 43 exemplifies entry points for representative voices.
[0362]
Each track can have a representative voice (see the second paragraph of “Information Contents” in FIG. 9). As in the case of the representative image, this representative voice can be used as an aid when the user identifies the target track. The representative voice of a track is a specific part of that track. The maximum number of representative sounds for one track is “1”. In other words, each track can optionally have one representative voice.
[0363]
The start position and the reproduction period of the representative sound of each track are described in entry points (upward arrows with {R} in FIG. 43) for the representative sound (see the second paragraph of “Information contents” in FIG. 9). The start position of the representative voice corresponds to the timing information of this entry point. The entry point for the representative voice has additional information for designating the reproduction period of the representative voice.
[0364]
FIG. 43 shows an example of entry points of representative audio in the original PGC, and three programs PG # 1, PG # 2, and PG # 3 are illustrated. Here, only PG # 2 has an entry point {R} for representative voice. This entry point {R} is described in an entry point table similar to the entry point for the index and display list.
[0365]
FIG. 44 shows an example of the contents of cell entry point information (C_EPI of type D2; see C_EPI # of FIG. 27 or FIG. 1 (h)).
[0366]
As shown in FIG. 44, the C_EPI of type D2 includes the following information items:
(1) EP_TY describing the format of entry points (this EP_TY is composed of EP_TY1 and EP_TY2, and type D2 is designated by a combination of EP_TY1 = "00b" and EP_TY2 = "11b");
(2) EP_PTM describing the playback time of the entry point (this playback time indicates the start time of the representative voice);
(3) RA_DUR describing the duration of the representative voice.
[0367]
EP_TY corresponds to the entry point described in the second paragraph of “Information content” in FIG. RA_DUR corresponds to the range from the reproduction start time to the reproduction end time described in the second paragraph of “Information Contents” in FIG.
[0368]
FIG. 45 exemplifies the contents of cell entry point information (C_EPI of type B1; see C_EPI # of FIG. 27 or FIG. 1 (h)).
[0369]
As shown in FIG. 45, type B1 C_EPI includes the following information items:
(1) EP_TY describing the format of entry points (this EP_TY is composed of EP_TY1 and EP_TY2, and type B1 is designated by a combination of EP_TY1 = "01b" and EP_TY2 = "01b");
(2) EP_PTM describing the playback time of the entry point;
(3) IDXN describing the index number of the index point specified by the entry point;
(4) PRM_TXT describing primary text for entry points.
[0370]
When the cell belongs to the original PGC and the entry point is the first in the program (PG), IDXN is “1”. When this cell belongs to a user-defined PGC and this entry point has an entry point for a user-defined track, IDXN is “1”.
[0371]
When the entry point does not satisfy the above condition, the IDXN of this entry point is obtained by adding “1” to the IDXN of the previous (preceding) type B entry point (that is, the IDXN of this entry point is “ Incremented by 1 ”).
[0372]
Note that the preceding entry point may be included in the preceding cell.
[0373]
PRM_TXT corresponds to PRM_TXTI described in the fifth paragraph of “Information content” in FIG.
[0374]
FIG. 46 exemplifies the contents of cell entry point information (C_EPI of type B2; see C_EPI # in FIG. 27 or FIG. 1 (h)).
[0375]
As shown in FIG. 46, type B2 C_EPI includes the following information items:
(1) EP_TY describing the format of the entry point (this EP_TY is composed of EP_TY1 and EP_TY2, and type B2 is designated by a combination of EP_TY1 = "00b" and EP_TY2 = "01b");
(2) EP_PTM describing the playback time of the entry point;
(3) IDXN describing the index number of the index point designated by the entry point.
[0376]
Note that C_EPI of type B2 corresponds to C_EPI of type B1 with PRM_TXT information removed.
[0377]
FIG. 47 exemplifies the contents of cell entry point information (C_EPI of type C2; see C_EPI # in FIG. 27 or FIG. 1H).
[0378]
As shown in FIG. 47, a C_EPI of type C2 includes the following information items:
(1) EP_TY describing the format of entry points (this EP_TY is composed of EP_TY1 and EP_TY2, and type C2 is designated by a combination of EP_TY1 = "00b" and EP_TY2 = "10b");
(2) EP_PTM describing the playback time of the entry point (when the display timing mode of the corresponding cell is browserable, this EP_PTM field is filled with “00h”);
(3) ASVOB_ENTN describing the entry number of the entry point ASVOB (when the display order mode of the corresponding cell is random or shuffle, the field of ASVOB_ENTN is set to “00h”);
(4) HOME_DLISTN that describes the entry point number that specifies the home display list (Home DLIST) in the corresponding cell (at each entry point of type C2, the value of HOME_DLISTN is the same; there is no HOME_DLISTN in the corresponding cell) In this case, HOME_DLISTN is set to “00h”; if the display timing mode of the corresponding cell is a slide show, HOME_DLISTN is set to “00h”; if the display order mode of the corresponding cell is random or shuffled Then, HOME_DLISTN is set to “00h”; HOME_DLISTN is equal to or less than the number of entry points in the cell).
(5) S_EFFECT describing information of visual effects (cut-in / cut-out, fade-in / fade-out, dissolving (disassembly), wiping, etc.) when the display of the previous ASVOB is finished and the display of the current ASVOB is started;
(6) E_EFFECT describing the visual effect information when ASVOB display and ASVU playback are finished;
(7) MAX_DUR (display timing of the corresponding cell) describing the maximum period for updating ASVOB (= MAX_DUR × video frame; the length of one video frame is 1 / 29.27 seconds for NTSC and 1/25 seconds for PAL) When the mode is a slide show, the MAX_DUR field is filled with “00h”).
(8) MIN_DUR describing a minimum period (= MIN_DUR × video frame) for updating ASVOB.
[0379]
When the MAX_DUR or MIN_DUR period is infinite, the MAX_DUR or MIN_DUR field is filled with “00h”.
[0380]
Further, when the maximum duration and the minimum duration are the same, the period for updating the ASV is always constant. If the maximum duration and the minimum duration are different, the duration for updating the ASV is randomly changed (by the player) between the maximum duration and the minimum duration.
[0381]
The minimum duration is set to 0.4 seconds or more, and the maximum duration is set to be equal to or more than the minimum duration.
[0382]
Further, EP_TY of type C2 corresponds to entry point type information (EP_TY) described in the first paragraph of “information content” regarding “still picture entry points 21 to 26” in FIG. Type C2 EP_PTM corresponds to information (EP_PTM) described in the third paragraph of the same location. Type C2 ASVOB_ENTN corresponds to the information (ASVOB_ENTN) described in the second paragraph of the same location. Type C2 MAX_DUR and MIN_DUR correspond to the information (MAX_DUR & MIN_DUR) described in the fourth paragraph of the same location.
[0383]
FIG. 48 illustrates the contents of the PGC general information (PGC_GI in FIG. 27 or FIG. 1G).
[0384]
As shown in FIG. 48, PGC_GI includes PG_Ns describing the number of programs and CI_SRP_Ns describing the number of cell information search pointers CI_SRP.
[0385]
In the case of a user-defined PGC, PG_Ns is set to “0”. The maximum number of original PGC programs is “99”. The maximum number of CI_SRPs is “999”.
[0386]
FIG. 49 illustrates the contents of the program information (PGI # in FIG. 27).
[0387]
As shown in FIG. 49, the PGI includes the following information items:
(1) PG_TY describing the format of the program;
(2) C_Ns describing the number of cells in the program;
(3) PRM_TXTI describing the primary text for the program;
(4) IT_TXT_SRPN describing the search pointer number of the item text having text data corresponding to the program;
(5) REP_PICTI describing representative image information (see FIG. 50).
[0388]
Note that PG_TY includes a protect flag. When this flag is “0b”, the corresponding program is not protected. When this flag is “1b”, the corresponding program is protected.
[0389]
When the program is in a protected state, all AOBs and ASVOBs that are referenced and used when the program is played cannot be temporarily erased or completely erased.
[0390]
The protect flag is not set to “1b” unless all AOBs and ASVOBs that are referenced and used by the program are in the normal state.
[0390]
FIG. 50 illustrates the contents of the representative image information (REP_PICTI in FIG. 29 or 49).
[0392]
As shown in FIG. 50, REP_PICTI includes the following information items:
(A) ASVUN describing the ASVU number (for example, # 1 of ASVU shown in FIG. 10 (f), FIG. 28 (a) and others) where the representative image for the track exists;
(B) ASVOB_ENTN describing the ASVOB_ENT number (for example, # 1 of ASVOB_ENT shown in FIG. 4 (h), FIG. 12 (g), etc.) where the representative image for the track exists.
[0393]
Note that REP_PICTI corresponds to 41 to 44 in FIG. 12 (d), ASVUN corresponds to 273 to 274 in FIG. 12 (g), and ASVOB_ENTN corresponds to 281 to 296 in FIG. 12 (g).
[0394]
【The invention's effect】
As described above, the effects of the present invention are summarized as follows.
[0395]
1. By providing the PGC information indicating the playback procedure in the management information related to audio information with audio track break information, the same data structure and data structure hierarchy (PGC / (program) / Cell hierarchy).
[0396]
As a result, high compatibility with existing video recording standards can be ensured, and it is possible to interoperate between video information (movie object) and audio information during reproduction. Further, since the break information of the audio track is recorded in the management information, recording, reproduction, and editing processing for each audio track specific to the sound information can be performed very easily.
[0397]
2. The program in the original program chain information 144 that is management information related to the original track is made to correspond to the original track, and the program information 311 to 314 that is the information recording area related to this program is added to “text information related to the audio track”, “ By recording the representative image showing the contents of the audio track, “display mode of still image”, “erasure prohibition flag”, etc., the information of each audio track can be managed in detail, and recording, playback, and editing processing for each audio track can be performed. It can be done very easily.
[0398]
3. Information of track head entry points 171 to 173 indicating the break information of the audio track is recorded in the cell information 164 to 169 in the user-defined PGC information table 145 that is management information related to the playlist, and “text information about the audio track” is recorded. Each of the audio track individual points 171 to 173 has various information specific to the audio track such as “representative image showing the contents of the audio track”, “display mode of still image”, and “erase prohibition flag”. Information can be managed in detail, and recording, playback, and editing processing in units of audio tracks can be performed very easily.
[0399]
4). When the user specifies a still image to be displayed at the same time during audio track playback, the display timing of each still image during audio information playback is automatically calculated from the playback time of the audio track and the set number of still images, and automatically managed information By recording, the display time of a still image can be set very easily without imposing a burden on the user.
[0400]
5. By displaying the original list and the playlist on the screen at the same time (applicable to video recording as well as audio recording), the user can easily create a playlist.
[0401]
6). When collecting a part of the original track in the original list and creating a new track on the playlist, or when partially erasing the inside of the original track,
A) Use all still images displayed during original track playback as still images displayed during new track playback on the playlist, or display all still images displayed before partial erase even after partial erase;
B) Of the still images displayed during playback of the original track, only the still images within a specific range are used for still images displayed during playback of a new track on the playlist, or the still images displayed within the partial erase range The image is not displayed after partial erasure;
The user is confused as to which process to select differs depending on the editing machine (information recording / reproducing device), and the determination of which process A) or B) is performed in a place that is not recognized by the user is edited. The user feels uncomfortable when it is automatically performed in the machine (information recording / reproducing apparatus).
[0402]
The user can understand how to set a still image for a new track by displaying, in the form of display mode 7, judgment information on which of the processes A) and B) is performed on the screen for creating a playlist. In addition to not feeling uncomfortable, a certain still image can be set regardless of the model of the editing machine (information recording / reproducing apparatus).
[0403]
7). An arbitrary screen of the movie object is extracted as a still image, and is registered in the still picture AV file information table 142 as a still image that can be displayed simultaneously with the audio object. Available. At the same time, since still image information can be recorded collectively in one place, it is possible to increase the access speed of still images, and it is possible to continuously reproduce still images and audio information without interruption.
[0404]
8). Further, in the present invention, designation information for each track is designated and the representative image designation information indicating the contents of the track is included in the management information, and the designation information for the representative image includes the designation information for the still image to be displayed when the audio track is reproduced. Is provided separately. For this reason, an arbitrary still image in a VOB group other than the video object (VOB) group in which a still image to be displayed during audio track playback is recorded can be set as a representative image, thereby increasing the degree of freedom. Can do.
[0405]
9. By providing representative audio display range information indicating the contents of the audio track in the area for recording the specific information for each audio track, the user does not listen to the entire audio track, as shown in FIGS. 6 (a) and 6 (b). By simply specifying the audio track to be confirmed from the display screen, it can be confirmed whether or not it is the audio track to be listened to, and the searchability of the user to the audio track is greatly improved.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a management data structure related to audio track information according to the present invention.
FIG. 2 is a view showing an example of the directory structure of still image files, audio files, and text files related to reproducible audio information recorded in an information storage medium (DVD audio recording disk or the like) according to the present invention.
FIG. 3 is a view showing an example of a management information data structure related to audio information according to the present invention.
FIG. 4 is a view showing an example of a management information data structure related to still image information recorded in the information storage medium according to the present invention.
FIG. 5 is a view showing an example of a management information data structure related to text information recorded in the information storage medium according to the present invention.
FIG. 6 is a view showing a screen image when creating a playlist according to the present invention.
FIG. 7 is a data structure of management information related to a playlist according to the present invention.
FIG. 8 is an explanatory diagram showing a relationship between a playlist and an audio object file according to the present invention.
FIG. 9 is an explanatory diagram showing a comparison of information contents recorded in a track head entry point (program information) and a still picture entry point according to the present invention.
FIG. 10 is an explanatory diagram of a method of linking to still image information related to a playlist according to the present invention.
FIG. 11 is an explanatory diagram of a link method to text information related to each track according to the present invention.
FIG. 12 is an explanatory diagram of a link method to still image information related to an original track according to the present invention.
FIG. 13 is an explanatory diagram of a method for linking text information related to an original track according to the present invention.
FIG. 14 is a diagram showing an example of a block configuration of a recording / reproducing apparatus (for example, a DVD audio recording / reproducing recorder / player) according to the present invention.
FIG. 15 is a view showing an example of a method for recording audio related information in an information storage medium according to the present invention;
16 is a diagram showing a continuation of FIG.
FIG. 17 is a view for explaining an example of a method for partially erasing an original track according to the present invention.
18 is a diagram showing a continuation of FIG.
FIG. 19 is a view shown for explaining display screen creation processing according to the present invention.
FIG. 20 is a diagram showing an example of a playlist creation method according to the present invention.
FIG. 21 is a diagram showing a continuation of FIG. 20;
FIG. 22 is a diagram for explaining a method of using video information as still image information displayed simultaneously with audio information.
FIG. 23 is a diagram showing a continuation of FIG.
FIG. 24 is an explanatory diagram of a playback procedure for playing back audio information in units of tracks.
FIG. 25 is a diagram showing a continuation of FIG. 24;
FIG. 26 is a diagram exemplifying a data structure of a part (UD_PGCIT in FIG. 1) of the real-time recording audio manager (RTR_AMG);
27 is a diagram illustrating a data structure of program chain information (PGC information) included in the real-time recording audio manager (RTR_AMG) of FIG. 26;
FIG. 28 is a diagram for explaining an example of entry points in an original PGC and a user-defined PGC.
FIG. 29 is a diagram illustrating the contents of cell entry point information (C_EPI of type A1) (see C_EPI # in FIG. 27).
30 is a diagram exemplifying the data structure of the other part (AUDFIT in FIG. 3) of the real-time recording audio manager (RTR_AMG).
FIG. 31 is a diagram illustrating the contents of an audio object unit entry (AOBU_ENT) corresponding to FIG. 30AOBU_ENT # n (n is an integer);
FIG. 32 is a diagram illustrating the concept of AOBU access for reproducing the contents (audio frames) of the audio object unit AOBU.
FIG. 33 is a diagram illustrating the concept of an AOBU entry (AOBU_ENT # n).
FIG. 34 is a diagram illustrating a data structure of still another part (ASVFIT in FIG. 4) of the real-time recording audio manager (RTR_AMG).
35 is a diagram illustrating the contents of an audio still video object entry (ASVOB_ENT) corresponding to ASVOB_ENT # n (n is an integer) in FIG. 34 or ASVOB_ENT # 1 in FIG. 4;
FIG. 36 is a diagram illustrating a data structure of an audio still video object (ASVOB).
FIG. 37 is a diagram illustrating the concept of ASVOB access.
38 is a diagram illustrating a data structure of still another part (TXTDT_MG in FIG. 5) of the real-time recording audio manager (RTR_AMG);
FIG. 39 is a diagram illustrating an example of using primary text information (eg, PRM_TXT in FIG. 29).
FIG. 40 is a view for explaining playback of audio still video (ASVOB).
41 is a diagram illustrating the structure of an original PGC (ORG_PGCI in FIG. 26).
42 is a diagram illustrating a structure of a user-defined PGC (UD_PGCIT in FIG. 1 or FIG. 26);
FIG. 43 is a diagram illustrating an example of entry points for representative voices.
FIG. 44 is a diagram illustrating the contents of cell entry point information (C_EPI of type D2).
FIG. 45 is a diagram illustrating the contents of cell entry point information (C_EPI of type B1).
FIG. 46 is a diagram illustrating the contents of cell entry point information (C_EPI of type B2).
FIG. 47 is a diagram exemplifying the contents of cell entry point information (C_EPI of type C2).
48 is a diagram illustrating the contents of PGC general information (FIG. 1 (g) or PGC_GI in FIG. 27).
FIG. 49 is a diagram illustrating the contents of program information (PGI # in FIG. 27).
FIG. 50 is a diagram illustrating the contents of representative image information (REP_PICTI in FIG. 49).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 ... Information storage medium; 112 ... Data area; 121 ... Audio video related information recording area; 130 ... Management information recording area; 131 ... Movie object recording area; 132 ... Still picture object recording area; ... real-time text object recording area; 144 ... original PGC information; 145 ... user-defined PGC information table; 150 ... user-defined PGC information table information; 151-152 ... user-defined PGC information search pointer; 160 ... PGC general information; 161 to 162 ... cell information search pointer; 164 to 169 ... cell information; 171 to 173 ... track head entry point (corresponding to cell entry point information C_EPI).

Claims (5)

In an information storage medium configured to have an audio information area for storing one or more audio information in a predetermined track unit, and a management information area for storing management information regarding a track of the audio information ,
The management information area includes program chain information for managing the reproduction order of the audio information, and a text data manager including one or more item texts,
The program chain information includes cell information relating to a cell as a playback unit, the cell information includes entry point information , the entry point information includes pointer information indicating the item text, and the entry point information includes the item text. An information storage medium configured to include entry point type information indicating that pointer information to be pointed is included . An information storage medium configured to have an audio information area for storing one or more audio information in a predetermined track unit and a management information area for storing management information related to a track of the audio information, The management information area includes program chain information for managing the playback order of the audio information and a text data manager including one or more item texts. The program chain information includes cell information regarding a cell as a playback unit. A storage medium including entry point information, the entry point information including pointer information indicating the item text, and entry point type information indicating that the entry point information includes pointer information indicating the item text. In the method used
Recording the audio information in the information area;
A recording method configured to record the management information in the management information area . An information storage medium configured to have an audio information area for storing one or more audio information in a predetermined track unit and a management information area for storing management information related to a track of the audio information, The management information area includes program chain information for managing the playback order of the audio information and a text data manager including one or more item texts. The program chain information includes cell information regarding a cell as a playback unit. A storage medium configured to include entry point information, the entry point information including pointer information indicating the item text, and entry point type information indicating that the entry point information includes pointer information indicating the item text. In the method used
Read the management information from the management information area,
A playback method configured to read the audio information from the information area . An information storage medium configured to have an audio information area for storing one or more audio information in a predetermined track unit and a management information area for storing management information related to a track of the audio information, The management information area includes program chain information for managing the playback order of the audio information and a text data manager including one or more item texts. The program chain information includes cell information regarding a cell as a playback unit. A storage medium configured to include entry point information, the entry point information including pointer information indicating the item text, and entry point type information indicating that the entry point information includes pointer information indicating the item text. In the method used
Means for recording the audio information in the information area;
Means for recording the management information in the management information area;
A recording apparatus . An information storage medium configured to have an audio information area for storing one or more audio information in a predetermined track unit and a management information area for storing management information related to a track of the audio information, The management information area includes program chain information for managing the playback order of the audio information and a text data manager including one or more item texts. The program chain information includes cell information regarding a cell as a playback unit. A storage medium including entry point information, the entry point information including pointer information indicating the item text, and entry point type information indicating that the entry point information includes pointer information indicating the item text. In the method used
Means for reading the management information from the management information area;
Means for reading the audio information from the information area;
A playback device comprising:

Images