JP2001086458A - Managing system for protection and temporary erasure of still picture information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a managing system for the protection and temporary erasure of digital information for dealing with plural kinds of still picture information. SOLUTION: Prescribed control information (RTR-VMG) and programs (PG#2 and other) more than one containing groups (VOG#B, VOG#E and VOG#F) of a video object composed of still pictures (B1-B80, B81-B99 and B100-B162) more than one can be recorded on an information storage medium to be used for this managing system. Inside the said RTR-VMG, reloadable protect information is stored for inhibiting the erasure of the program (PG#2) for the unit of the program. Otherwise, inside the said RTR-VMG, reloadable temporary erasure information (TE) is stored for setting the group (VOG#C and VOG#F) of the video object into temporary erasing state for a unit containing the groups of the video object.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for protecting digital information including still images and managing temporary erasure.

In particular, an erasure prohibition flag (protect information) is set for a program which is a set of one or more still images, or attribute information (S_VOB_EN) of each still image is set.
The present invention relates to a system in which a temporary erase flag (temporary erase TE) for each still image is set in (T #) or an erase prohibition flag is set for a specific range of still images.

[0003]

2. Description of the Related Art There is a digital camera for digitally recording still image information. Still image information recorded digitally is used for menu images and the like in DVD (Digital Versatile Disk) videos for digitally recording / reproducing moving image information in addition to digital cameras.

[0004]

SUMMARY OF THE INVENTION In a digital camera,
Each captured still image is stored as a separate file. When the still image information for each sheet is divided and stored in individual files, the following inconvenience occurs.

[0005] a) Since similar still image contents or still images taken at the same time are not grouped, management and retrieval of individual still images become complicated. For example, it is necessary to open a file separately to confirm the contents of each still image information, and it takes time to confirm the contents.

[0006] b) When a plurality of pieces of still picture information are to be handled in a DVD_RTR (real-time recording) system capable of recording / playback, compatibility and continuity cannot be maintained with a DVD video system.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a DVD_RTR recording / playback system which has a certain degree of compatibility and continuity with a DVD video, and which records between a moving image and a still image. Another object of the present invention is to provide a management system for protection and temporary erasure of digital information handling a plurality of pieces of still image information while ensuring consistency or continuity of management information.

[0008]

In order to achieve the above object, predetermined control information (FIG. 39) is stored in an information storage medium (1001 in FIG. 1) used in the management system according to the present invention.
RTR_VMG) and one or more still images (B in FIG. 41)
1 to B162) (P in FIG. 41)
G # 2 etc.) can be recorded.

The predetermined control information (RTR_V in FIG. 39)
MG / PGI / PG_TY) stores (rewriteable) protection information that prohibits erasure of the program in units of the program (PG # 2 in FIG. 41).

The information storage medium (1001 in FIG. 1) used in the management system according to the present invention includes predetermined control information (RTR_VMG in FIG. 39) and one or more still images (B1 to B80 in FIG. 41). B81 to B99; B100
To B162), one or more programs (PG # 2 in FIG. 41 and others) including a group of video objects (VOG # B, VOG # E, VOG # F in FIG. 41) can be recorded.

The predetermined control information (RTR_V in FIG. 40)
MG / S_VOGI # / S_VOB_ENT_TY), the group of the video objects (VO in FIG. 41).
G # C, VOG # F), and stores (rewritable) temporary erasure information (TE in FIG. 40) for setting the video object group to the temporary erasure state.

Further, the information storage medium (1001 in FIG. 1) used in the management system according to the present invention has a first recording area (1011 in FIG. 1d) in which predetermined control information (RTR_VMG) can be recorded and a still image. A second recording area (1013 in FIG. 1d) in which data can be recorded is provided.

In the present invention, the first recording area (1011 in FIG. 1D) and the second recording area (10D in FIG. 1D) are used.
1013) (ie, the first and / or
Or in a second recording area), an unrecorded area (1 in FIG. 4).
460) can be set. The position distribution of this unrecorded area on the information storage medium can be specified by providing position distribution information (1621 in FIG. 5). This position distribution information (1621 in FIG. 5) is based on the unrecorded area (1460 in FIG. 4) existing in the first recording area (1011 in FIG. 1d) and the second recording area (1013 in FIG. 1d). 5 can be said to be management information (1621 in FIG. 5).

In the protection information management method according to the present invention, the predetermined control information (RTR_VM in FIG.
G / PGI / PG_TY), the program (FIG. 4)
It is configured to write rewritable protection information for prohibiting erasure of the program in units of PG # 2).

Further, in the protection information management method according to the present invention, the predetermined control information (RTR_VM in FIG. 40) is used.
G / S_VOGI # / S_VOB_ENT_TY), the group of the video objects (VO in FIG. 41).
G # C, VOG # F) and rewritable temporary erasure information (TE in FIG. 40) for setting the video object group to the temporary erasure state is written in units including G # C, VOG # F).

Further, in the method of changing the program erasure prohibition state according to the present invention, a plurality of still images (B1 to B
162) (PG # 2 in FIG. 41)
Is in the erasure prohibited state (the protection information in FIG. 39 is 1b), the erasure prohibited state of the predetermined program (PG # 2) is changed (the erasure prohibited range = in FIG. 41).
In the case where the protection range is changed from B1 to B162 to B1 to B80), the combination of the still images constituting the video object group (VOG # B) is rearranged (ST102, ST104, ST108 in FIG. 42).
VOG # B = B1 to B162 in FIG.
B1 to B80, VOG # E = B81 to B99, VO
G # F = reorganized into B100 to B162), the group of video objects after reorganization (VOG # B, VO
A new program number is assigned to each of G # E and VOG # F (ST102 and ST1 in FIG. 42).
06, ST110; VOG # B = GP # 2, VOG # E
= PG # 4, VOG # F = part of PG # 5).

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1A to 1F are diagrams for explaining the data structure of an information recording medium according to one embodiment of the present invention.

[1] Schematic Structure of Data on Information Storage Medium As an information storage medium capable of recording and reproducing video information or music information, a DVD_RTR as shown in FIG.
There is a disk (optical disk utilizing phase change) 1001. The information content (data structure) of the information recorded on the disc 1001 will be described below.

The schematic data structure of the information recorded on the optical disc 1001 is, as shown in FIG. 1B, in order from the inner peripheral side 1006: an emboss data zone in which the light reflecting surface has an uneven shape;
A lead-in area 1002 having a flat (mirror) surface mirror zone and a rewritable data zone in which information can be rewritten; recorded in a rewritable data zone rewritable and rewritable by a user;
Volume / file management information 1003 in which information relating to a file of video data (AV data) or the entire volume is stored; a data area 1004 comprising a rewritable data zone that can be recorded and rewritten by a user; and a rewritable information rewritable. It is divided into a lead-out area 1005;

The emboss data zone of the lead-in area 1002 includes: a disk type such as DVD-ROM / DVD-RAM / DVD-R, a disk size, a recording density, and a physical sector number indicating a recording start / end position. Information relating to the entire information storage medium; information relating to recording / reproducing / erasing characteristics such as recording power and recording pulse width, erasing power, reproducing power, and linear velocity at the time of recording / erasing; Information on the manufacture of the media is pre-recorded.

The rewritable data zone of the lead-in area 1002 and the rewritable data zone of the lead-out area 1005 include: a unique disk name recording area for each information storage medium; a test recording area (for confirming recording / erasing conditions); It has a management information recording area for a defective area in the data area 1004, and the information recording / reproducing device can record in the area.

In a data area 1004 sandwiched between a lead-in area 1002 and a lead-out area 1005, mixed recording of computer data and audio / video data (AV data) is possible as shown in FIG. It has become.

The recording order of the computer data and audio / video data and the size of each recording information are arbitrary. Here, locations where computer data is recorded are called computer data areas 1008 and 1010, and an area where audio / video data is recorded is named an audio / video data area 1009.

Audio / video data area 1009
The data structure of the information recorded in is as shown in FIG. 1D. Anchor pointer 1015 for control information: located at the first position in the audio / video data area 1009, the audio / video data area Information indicating the head position (head address) where control information 1011 in 1009 is recorded; control information 1011: control information necessary for performing each of recording (recording), playback, editing, and search processing; video object 1012: Recording information of the content (content) of video data; Picture object 1013: Still image information such as a still image, a slide image; Audio object 1014: Recording information of the content (content) of audio data; Thumbnail object 1016: When searching for a desired location in video data, Thumbnail utilized during editing (Thumbnail) reduced image information and the like; and the like.

The video object 101 shown in FIG.
2. The picture object 1013, the audio object 1014, and the thumbnail object 1016
Each means a group (group) of information classified for each content content (data content).

Therefore, all video information recorded in the audio / video data area 1009 is included in the video object 1012, all still picture information is included in the picture object 1013, and all audio / audio information is included in the audio object 1014. All thumbnail information used for management / search of video information is included in the thumbnail object 1016.

A video object VOB 1403 shown in FIG. 3, which will be described later, indicates a lump (unit) of information recorded in an AV file (audio / video file) 1401, and a video object 1012 shown in FIG.
It has a different definition. Note that similar terms are used, but with completely different meanings.

The contents of the control information 1011 are shown in FIG.
As shown in (e): AV data control information 1101: video object 1
012, which manages the data structure and manages information relating to a recording position on the optical disc 1001 as an information storage medium; reproduction control information 1021: control information necessary for reproduction; recording control information 1022: recording (recording)・ Edit control information 1023: Control information required at the time of editing; ・ Thumbnail control information 1024: Management information for searching or editing a desired location in video data (thumbnail object); have.

The control information 1101, 1 shown in FIG.
021 corresponds to the RTR. IFO and RTR of FIG.
_VMG.

The data structure in the AV data control information 1101 shown in FIG. 1E is as shown in FIG. 1F. Allocation map table 1105: Information storage medium (optical disk 1001) Information relating to address setting along the actual arrangement, identification of recorded / unrecorded areas, etc .; Video title set information VTSI 1106: Indicates the overall information content in the AV file 1401 as shown in FIG. Connection information, time information such as grouping information of a plurality of VOBs for management / search and a time map table (corresponding to RTR_VMGI in FIG. 8); video object information 1107: AV file 1401 as shown in FIG. Indicates information about each VOB in the VOB, and includes attribute (characteristic) information for each VOB and information contained in the VOB. Information about individual VOBU that (M_AV 8
FIT / S_AVFIT or S_AVFIT in FIG.
Program chain control information 1103: information on a video information reproduction program (sequence) (PG in FIG. 23)
Cell playback information 1108: information on the data structure of the video information basic unit at the time of playback (corresponding to CI in FIG. 23 or S_CI in FIG. 24).

The contents of FIG. 1A to FIG. 1F are outlined above, but a brief supplementary explanation is given below for each piece of information.

The volume / file management information 1003 records information on: information on the entire volume; the number of PC data files included; the number of files on AV data; and recording layer information.

In particular, as the recording layer information, the number of constituent layers (eg, RAM / ROM dual-layer disc 1
The number of discs is 2 layers, one ROM double-layer disc is also 2 layers, and n single-sided discs are counted as n layers); ・ Logical sector number range table allocated for each layer (capacity for each layer); ・ For each layer Characteristics (eg: DVD-RAM disk,
RAM part of RAM / ROM dual layer disc, CD-RO
M, CD-R, etc.) ・ Logical sector number range table (including rewritable area capacity information for each layer) for each zone in the RAM area for each layer; ・ Unique ID information for each layer (For example, information for finding a disk exchange in a multiple disk pack). This allows multiple disk packs and RA
Consecutive logical sector numbers are set for the M / ROM dual-layer disk so that it can be handled as one large volume space.

The reproduction control information 1021 includes: information relating to a reproduction sequence in which PGCs are integrated; information relating to the above, indicating a pseudo recording position when the information storage medium is regarded as a single tape such as a VTR or DVC. (Sequence for continuously reproducing all recorded cells); information on simultaneous reproduction of a plurality of screens having different video information; search information (table of cell IDs corresponding to each search category and start time in the cell) Is recorded, and information that enables the user to directly access the corresponding video information by selecting a category) is recorded.

The recording control information 1022 records: program reservation recording information;

Further, the edit control information 1023 includes: • special edit information for each PGC (the relevant time setting information and special edit content are described as EDL information); • file conversion information (specification in the AV file). AV part
Is converted into a file that can be specially edited on a PC, such as an I-file, and a file storage location after the conversion is specified).

The thumbnail control information 1024 includes: management information relating to the thumbnail object 1016;
... A VOB relating to each thumbnail image recording location and each thumbnail image in the AV data area 1009
Or, cell designation information, V associated with each thumbnail image
Information such as OB or location information in the cell (VOB and cell will be described in detail in the content explanation location in FIG. 3) is described.

[2] Directory Structure of Data File in Data Area Next, the directory structure will be described. FIG. 1 (b)
All information recorded in the data area 1004 is recorded in file units. The relationship between each data file is
It is managed by a directory structure as shown in FIG.

In FIG. 2, the root directory 145
Below 0, a plurality of subdirectories 1451 are provided so that classification can be easily performed for each file content to be recorded.

In the embodiment shown in FIG. 2, each data file relating to the computer data recorded in the computer data areas 1008 and 1010 of FIG. 1C is recorded under the computer data storage subdirectory 1457, and the audio / video data is recorded. The audio / video data recorded in the data area 1009 is recorded under the rewritable video title set RWV_TS1452.

A DVD video disc (or a DV
When copying video information recorded on a D audio disc) to the disc shown in FIG. 1A, the video information is copied under a video title set VIDEO_TS1455 and an audio title set AUDIO_TS1456.

The control information 1011 shown in FIG. 1D is recorded as one file as recording / reproducing video management data. In the embodiment of FIG. 2, the file name is RWVIDEO_CO
NTROL.IFO (or real-time recorded information; RT for short)
R. IFO). Further, the same information is recorded under the file name RWVIDEO_CONTROL.BUP for backup.

In the embodiment shown in FIG. 2, the video objects (RTR_MOV.VRO) 1012 shown in FIG.
Picture object (RTR_STO.VRO) 10
13. Audio object (RTR_STA.VR)
O) All 1014 and thumbnail objects 1016 are collectively recorded as an AV file 1401 (the file name in the embodiment of FIG. 2 is RWOBJECT.OB).

Although not shown in FIG. 1, additional recording / reproduction information 1454 that can be used at the time of video recording / reproduction can be simultaneously recorded, and the information is collectively recorded as one file. In the form of RWADD.DAT (S_AA_STI / S_AAFI in FIG. 12 or AA_
ENT).

[3] Data Structure in AV File FIG. 3 shows an example of the data structure in the AV file. FIG.
As shown in (b), the entire AV file 1401 constitutes one video title set VTS (or RTR movie object RTR_MOV.VRO) 1402.

The VTS 1402 includes a plurality of videos separated into a plurality of parts of titles (or a plurality of chapters) 1407 and 1408 in accordance with the contents of audio / video data and the order of information recorded in the AV file 1401. Object VOBs 1403, 1404, 140
It consists of five groups.

VOBs 1403 and 1404 in FIG.
1405 is defined as a group of audio / video data recorded in the AV file 1401, and has a strong classification item color such as video information / still image information / audio information / thumbnail information. The object 1012 has different definition contents.

Therefore, the VOB 140 shown in FIG.
3, the video object 10 in 1404, 1405
In addition to the information classified as No. 12, information classified as a picture object 1013, an audio object 1014, and a thumbnail object 1016 is also recorded as shown in FIG.

Grouping is performed for each relevant VOB based on information contents (contents) recorded in each of the VOBs 1403, 1404, and 1405, and a part-of-title PTT (or chapter) 140 is grouped for each group.
7, 1408.

That is, the PTTs 1407 and 1408 are configured as an aggregate of one or a plurality of VOBs.

In the embodiment shown in FIG.
The PTT 1408 is composed of two VOBs 4 and 1405, and the PTT 1407 is composed of only one VOB 1403.

The minimum basic unit of the video information is called video object units VOBUs 1411 to 1414, and the data in the video objects VOBs 1403 to 1405 are, as shown in FIG.
4 as an aggregate.

MPEG1 or MPEG2 is often used as the video information compression technique in the VOBs 1403 to 1405.

In MPEG, video information is divided into groups called a group of pictures GOP at intervals of about 0.5 seconds, and video information is compressed in units of this GOP.
Video information compression units of the video object units VOBUs 1411 to 1414 are formed in approximately the same size as the GOP and in synchronization with the GOP.

These VOBUs 1411 to 1414 are:
The data is divided and recorded for each sector 1431 to 1437 in units of 2048 bytes. Each of the sectors 1431 to 1437 is recorded in a pack structure format. That is, for each pack, raw video information, sub-video information, audio information, and dummy information are stored in video packs V_PCK14221, 1 respectively.
425, 1426, 1427, sub-picture pack SP_PCK
1422, an audio pack A_PCK 1423, and a dummy pack DM_PCK 1424.

Although the size of each pack is 2048 bytes, since it has a 14-byte pack header at the beginning,
The amount of information recorded in each pack is 2034 bytes.

Here, the dummy pack DM_PCK1424
Is used for post-addition of postscript information after recording. For example, it is inserted in advance for use purposes such as inserting after-recording (after-recording) information in an audio pack and replacing it with a dummy pack, inserting memo information into a sub-picture pack and replacing it with a dummy pack, and the like.

The recording area of a DVD-RAM disc (DVD_RTR disc) as an example of the information storage medium (optical disc 1001) shown in FIG. 1A is divided into a plurality of sectors. A data amount of 2048 bytes can be recorded per sector. In this DVD-RAM disk, recording / reproduction is performed in units of sectors (2048 bytes). Therefore, the information storage medium (optical disc 1001)
When a DVD-RAM disk is used as the
Each pack has sectors 1431 to 143 as shown in FIG.
Recorded in 7 units.

As shown in FIGS. 3B and 3D, the video title set VTS (or RTR) is formed by a series of connections of all VOBs 1403 to 1405 in the AV file 1401.
_MOV. VRO) 1402. On the other hand, in the reproduction procedure described in the reproduction control information (pack control information) 1021, it is possible to specify an arbitrary range in an arbitrary VOB and to reproduce in an arbitrary reproduction order. The basic unit of video information at the time of reproduction is cell 144
1, 1442 and 1443.

The cells 1441, 1442, and 1443 can specify an arbitrary range within an arbitrary VOB, but cannot specify an area across VOBs. Cannot be set).

In the embodiment shown in FIG. 3G, the cell 144
1 designates one VOBU 1412 in the VOB 1403, the cell 1442 designates the whole one VOB 1404, and the cell 1443 designates the range of only a specific pack (V_PCK1427) in the VOBU 1414.

Information indicating the video information reproduction sequence is set by the program chain PGC 1446, and this reproduction sequence is described by specifying one cell or by connecting information of a plurality of cells. For example, FIG.
In the embodiment of (h), the program chain PGC14
46 constitutes a reproduction program as a connection of the cell 1441, the cell 1442, and the cell 1443 (the cell and the P
A detailed description of the relationship between GC will be described later.)

The VOB 1403 in FIG. 3 can include not only video information but also audio information. In this case, VOBU1 constituting VOB1403
Reference numeral 411 denotes a V_PCK 1421 that forms a video part.
And SP_PCK 1422, and A_PCK 1423 and DM_PCK (for after-recording) 1424 which constitute the audio part.

The video part is composed of a sequence header and a GOP header composed of a part of the contents at the head of the V-PCK, and an MPEG I / P composed of the contents of the V_PCK group.
It is composed of a picture, a sequence end code composed of a part of the contents at the end of the V-PCK, and a sub-picture unit SPU composed of the contents of the SP_PCK (see FIG. 3 (j)).

The audio part includes audio data reproduced in synchronization with the reproduction of a still image using the I picture of the video part, and is composed of one or more audio frames (FIG. 3 (i)). reference).

[4] Contents of Allocation Map Table Next, the allocation map table 11 shown in FIG.
05 will be described with reference to FIG.

As described above, the recording area of the DVD-RAM disk is divided into a plurality of sectors, and the logical sector numbers (LSN) are sequentially assigned in ascending order from the inner peripheral side.

Now, an information storage medium (optical disc 100)
Consider a case where video information is recorded in the data area 1004 of 1) according to the following procedure.

1. Information storage medium (optical disk 1001)
Logical sector number a + in the data area 1004
The AV file 14 is stored in a continuous area from 1 to g (a <g).
01 Recording area is secured.

2. Continuous area (b <c) from logical sector numbers b + 1 to c in the recording area of the AV file 1401
The data of VOB # 1 · 1461 is recorded in the data.

3. A continuous area (d <e) from logical sector numbers d + 1 to e in the recording area of the AV file 1401
The data of the VOB # 2 1462 is recorded in the.

The above 1. From 3. Up to AV
In the file 1401, three unrecorded areas of logical sector numbers “a + 1 to b”, “c + 1 to d”, and “e + 1 to g” remain.

Next, when recording video information of VOB # 3 having a large data size in the unrecorded area, The data of VOB # 3 is divided into a plurality according to the size of the unrecorded area in the recording area of the AV file 1401.

5. The first data 1463 of the divided VOB # 3 is recorded in a continuous area (a <b) from logical sector numbers a + 1 to b.

6. Next data 1 of the divided VOB # 3
464 is recorded in a continuous area (c <d) from logical sector numbers c + 1 to d.

7. The last data 1465 of the divided VOB # 3 is recorded in a continuous area (f <g) from logical sector numbers f + 1 to g.

As a result, in the AV file 1401, the unrecorded area 1 having the logical sector number “e + 1 to f”
It is necessary to perform a process that 460 remains.

The above 1. To 7. FIG. 4 shows the physical recording position distribution of each VOB in the AV file 1401 obtained as a result of the above processing.

As can be understood from the above description, when data in the AV file 1401 is partially erased or new data is repeatedly recorded in an unrecorded area in the AV file 1401, VOB # 3 1463, 1464, 146
As in the example of No. 5, there is a need to dispersely record one VOB data at a plurality of locations.

Information indicating the physical recording position distribution for each VOB of the data distributed and recorded in the same AV file 1401 is the allocation map table 1105 shown in FIG.

In the example shown in FIG. 4, an unrecorded area 1460 is provided for data to be recorded in real time (such as a still picture object).

However, such an unrecorded area is not limited to exclusive use of data such as a still picture object. For example, the control information 1011 in FIG. 1D or R in FIG.
An unrecorded area as illustrated in FIG. 4 can be provided for the content of TR_VMG (management information).

As described above, if an unrecorded area can be appropriately set in the control information (management information) as well, even if a part of the management information is deleted by editing or the like, the other part of the management information is not manipulated. As a result, information management can be simplified. From this, it is possible to greatly reduce the buffer memory size of the playback device required for the management information.

FIG. 5 shows the information contents of the allocation map table 1105 when the data arrangement of FIG. 4 is a specific example.
Shown in The allocation map table 1105 includes position distribution information 1621 of an unrecorded area and data recording position distribution information 1622, 1623, and 1624 for each VOB.

A chunk in which the connection of consecutive sector numbers is secured in each VOB is defined as an “extent”.

In the embodiment shown in FIG. 4, the data of VOB # 3 is recorded in three groups. In the above example, since the logical sector numbers (LSN) a + 1 to b have a connection of consecutive sector numbers, this area constitutes extent # γ1473. That is, VOB #
3 is recorded in extent # γ
1473, extent # δ1474, extent #
It will be distributed at three places of ε1475.

In the allocation map table 1105 shown in FIG. 5, the position distribution information relating to the unrecorded area and each VOB includes the number of extents 1601, 16
02, 1603, and 1604 are recorded. afterwards,
Start addresses 1606, 1607 for each extent,
1608, 1609, 1610, 1611 and their extent sizes 1614, 1615, 1616, 161
7, 1618, and 1619 are recorded.

The head address is a “difference number” from the head sector number (logical sector number) of the AV file 1401.
(Or the number of relative sectors). When represented by the difference numbers in this way, when the entire contents of the AV file 1401 are transferred to another information storage medium, there is no need to change the information in the allocation map table 1105, and the portability of the file is improved.

Although the extent size is represented by the number of sectors in FIG. 5, as another method, the extent size can be represented by the last address of the extent.

In the DVD-RAM disk (or DVD-RTR disk) standard, a physical address on an information storage medium (optical disk 1001) is a physical sector number (P).
SN). The entire address handled by the file system is indicated by a logical sector number (LSN). On the other hand, addresses defined on the file system in the data area 1004 in FIG. 1A are distinguished as logical block numbers (LBN).

However, if the above description method (a description method in which PSN, LSN, and LBN are strictly distinguished) is faithfully followed, the description will be complicated. Therefore, in FIGS. 4 and 5, emphasis is placed on the easiness of understanding, and the description is made in terms of the logical sector number (LSN).

The information storage medium (1001 in FIG. 1) used in the management system according to the present invention has a first recording area (1011 in FIG. 1d) for recording predetermined control information (RTR_VMG) and a still image. A second recording area (1013 in FIG. 1d) for recording data can be provided. In at least one of the first recording area (1011 in FIG. 1d) and the second recording area (1013 in FIG. 1d) (that is, in the first and / or second recording area), an unrecorded area (FIG. 1460) can be set.
The position distribution of the unrecorded area on the information storage medium can be specified by the position distribution information (1621 in FIG. 5).

[5] Contents of Reproduction Control Information 1021 The contents of the reproduction control information 1021 will be described with reference to FIGS. 6 and 7. The program chain PGC control information 1103 in the reproduction control information 1021 has the data structure shown in FIG. 6, and the reproduction order is determined by the PGC and the cell.
The PGC indicates a unit for executing a series of reproductions in which a cell reproduction order is specified. The cell indicates a reproduction section in which reproduction data in each VOB is specified by a start address and an end address as shown in FIG.

The program chain control information 1103 includes:
PGC information management information (or PGCI management information) 105
2. Search pointer of one or more PGC information (or P
GCI search pointer) 1053, 1054, and P
It comprises GC information (PGCI) 1055, 1056, 1057.

The PGC information management information (or PGCI management information) 1052 includes information (PGCN) indicating the number of program chains PGC. PGC information search pointer (or PGCI search pointer) 1053;
Reference numeral 1054 indicates the head of each piece of PGC information (PGCI) to facilitate the search.

PGC information (PGCI) 1055, 105
6, 1057 are PGC general information (PGC_G
I) 1061, one or more pieces of program information (PGI #
m) includes one or more cell IDs (or cell information search pointers CI_SRP # m) and one or more cell informations (CI # n).

PGC general information (PGC_GI) 1061
Contains information indicating the PGC playback time and the number of cells (the number of cell playback information).

Alternatively, PGC general information 1061 includes information (PG_Ns) indicating the number of programs PG and information (CI_SRP) indicating the number of cell information search pointers CI_SRP.
_SRP_Ns).

As shown in FIGS. 7A and 7B, reproduction data is specified as a cell in a reproduction section from cell A to cell F, and PGC information is defined in each PGC.

1. PGC # 1 shows an example composed of cells specifying continuous playback sections, and the playback order is cell A → cell B → cell C.

2. PGC # 2 shows an example composed of cells that specify intermittent playback sections, and the playback order is:
The order is cell D → cell E → cell F.

3. PGC # 3 shows an example in which reproduction can be performed intermittently irrespective of the reproduction direction or overlapping reproduction, and the reproduction order is cell E → cell A → cell D → cell B → cell E.

The control information (RTR.IF) shown in FIG.
O) 1011 includes the control information 1 as shown in FIG.
The navigation data RTR_VMG (real-time recording / video manager) corresponding to 101 and 1021 is included. And this RTR_VM
G is video title set information VTSI (or RTR_VMG information RTR_V, as shown in FIG. 1 (f)).
MGI) 1106.

This information (RTR_VMGI) 1106
Contains information used when reproducing the sequence of VOBs 1403, 1404, 1405,... In FIG.

Hereinafter, referring to FIG. 8, RTR_V of FIG.
The MG (or RTR.IFO in FIG. 2), the data structure and its contents will be described.

As shown in FIG. 8, the navigation data RTR_VMG (control information RTR.IFO) is
Video manager information (RTR_VMGI), movie AV file information table (M_AVFIT), still image AV file information table (S_AVFIT),
Original PGC information (ORG_PGCI) and a table of user-defined PGC information (UD_PGCI)
T) and a text data manager (TXTDT_M)
G) and a table of information on the manufacturer (MNFIT)
It is composed of

RTR_V included in this RTR_VMG
MGI is the video title set (VTS) shown in FIG.
This corresponds to information 1106.

This information (RTR_VMGI) 1106
As shown in FIG. 8, VTS general information 1751 and VTS
OB sequence information 1752 and PTT information 1753
And a VTS time map table 1754.

This information (RTR_VMGI) 1106
Is, from another perspective, VOB sequence information 175
Playlist search pointer table (P
L_SRPT) and a video manager information management table (VMGI_MA) corresponding to the VTS general information 1751.
T).

This PL_SRPT is the VOB in the VTS.
(Or the number of playlist search pointers and PL_
Information 1756 of SRPT end address) and VOB
Information 17 of the ID of the first VOB in the sequence (or the first playlist search pointer PL_SRP # 1)
57 and the ID of the second VOB in the VOB sequence
(Or the second playlist search pointer PL_S
RP # 2) information 1758, and the like.

Each play list search pointer (PL_S
RP) is information (PL_T) indicating the format of the playlist.
Y), PGC number information (PGCN) corresponding to this playlist, information on the date and time when this playlist was created (PL_CREATE_TM), and primary text information (PRM_TX) related to this playlist.
TI) and the number information (IT_TXTI_S) of the search pointer of the item text used in this playlist.
RPN) and thumbnail pointer information (THM_PTRI) indicating a reduced image (thumbnail picture) corresponding to the recorded content of the playlist.

Information 1756, 1775, 1
The table (PL_SRPT) including 758,.
This corresponds to VOB sequence information 1752 included in SI (RTR_VMGI) 1106.

This VTSI (RTR_VMGI) 110
6 are summarized as follows: [6] Video title set information (VTSI or R
TR_VMGI) 1106 content Video title set information (VTSI or RTR_
The data structure in the VMGI) 1106 is as shown in FIG. 8. Video title set general information 1751... Video title set (or AV file 1 in FIG. 2)
Information on general content items of RTR data 401); Video object sequence information 1752 ... Video title set 1402 in the data structure of FIG.
(= AV file 1401) A serial order is set for all VOBs, and the order information of each VOB according to this sequence is described here; ・ Part of title information 1753 ... AV file 1401 Each object data recorded in the group is grouped for each related data for the purpose of data management and search, and a video title name is set for each group. The above group (part of title P
TT) is composed of an aggregate of VOBs. VOB information included for each part of title PTT is described here; Video title set time map table 1754
.. VOBU position information at specific time intervals according to the video object sequence is recorded for VOBs classified into the video object 1012 and the audio object 1014 in the video title set 1402.

Video object sequence information 175
As shown in the right side of FIG. 8, the specific data structure in 2 is the total number of VOBs included in the video title set (or the playlist search pointer information PL_SR).
PTI) 1756 is recorded. .. (Or PL_SRP # 1, # 2,... #N) of the corresponding VOBs are recorded in order according to the sequence of the video objects.

Video object sequence information 175
2 is, for example, “AV file 1
A user or information recording / reproducing, such as “recording order to 401 (order of recording time earlier)”, “order of recording arrangement on information storage medium (optical disc) as shown in FIG. 4”, “order of VOB size”, etc. It can be set arbitrarily on the device side.

By sequentially ordering all VOBs in the video title set VTS 1402, 1
A user interface similar to a VTR for recording an image on a tape of a book can be provided.

For example, searching for a desired place by fast-forwarding (FF) and rewinding (FR) the tape; checking the entire recorded content by fast-forwarding (FF) the tape; and fast-forwarding (FF) and rewinding (FR) the tape ) Is searched for an unnecessary place that has already been recorded, and processing such as overwriting new video information in the unnecessary place is performed using video object sequence information 175.
2 can be performed.

The content of the video object sequence information 1752 described on the right side of FIG. 8 will be described with reference to FIG.

First, an information storage medium (optical disc 100)
1) VOB # 1 to VOB in the state where the above arrangement order is as shown in FIG.
B # 3 is recorded, and the recording order is as described in the section “[4] Contents of Allocation Map Table” in the section “1. To 7. Let's consider the case where it is made according to the following order.

FIG. 9 (a) shows a sequence order when these data are set in a sequence of “recording order to AV file 1401 (recording time is earlier)”.
3) Comparing this figure with FIG. 4, it can be seen that the arrangement order from extent # α1471 to extent ## 1470 has changed.

The “first VOB_ID 1575 in the video object sequence” in FIG. 8 designates “VOB # 1 · 1461” in FIG. 9 (a3), and the “second VOB_ID 175 in the video object sequence”
8 "designates" VOB # 2 · 1462 "in FIG. 9 (a3).

FIG. 9 (b3) shows another embodiment specified by the video object sequence information 1752.

VOB # A-1771, VOB # B-17
72 is a video object (movie VOB information M_V)
OBI #) 1012, and belongs to VOB # C.
1773, VOB # F ・ 1776, VOB # G ・ 177
7 belong to the audio object 1014 (classified), and VOB # D-1774 to VOB # G-1777 are picture objects (still image VOB group information S_
VOGI #) 1013.

As described above, the sequence order can be specified in a mixed manner regardless of the type of the VOB. In FIG. 9, VOBs (VOVs) belonging to the thumbnail object
B # H 1778, VOB # I 1779) are set.

[7] Recording Format of Still Picture Information (Picture Object) The information storage medium (optical disc 100) shown in FIG.
1) A recording format (recording format) for recording still image information thereon will be described below.

The still picture information or audio information to be added later to the still picture information (information in which the explanation for each still picture information is input as speech and this is additionally recorded by after recording) is the picture shown in FIG. Object 1
013 or the location of the audio object 1016.

This still picture information recording format corresponds to a case where a plurality of still pictures taken by a digital camera or the like are recorded on an information storage medium (optical disc 1001) at a time. Can be recorded continuously. In order to enable this continuous recording, at least two still images are stored in an information storage medium (optical disc 100).
1) The format is such that it is recorded following the adjacent location above.

In this still picture information recording format, the still picture or audio information added to the still picture also emphasizes the format continuity and consistency with the video information (video object 1012), and follows the data structure of FIG. are doing.

MPEG1 or MP, which is a kind of video information recording format (video information compression format)
In EG2, compression information for one video frame corresponding to the head position of the above-described GOP exists in the form of "I-picture".

The input still picture is MPEG1 or M
I-picture 1706 using the compression technology of PEG2,
1707, 1708, and 1709, and converted into
3) Alternatively, as shown in FIG. 10 (c3), V_PCK
(Video Pack) 1661, 1662, 1663, 166
8, 1669, 1670, 1671, 1672, 1673, 1
674 and stored in an information storage medium (optical disc 100).
1) Recorded above.

As described above, the DVD-RAM (DVD
In the (_RTR) disc, each V_PCK (video pack) is recorded for each sector having a recording size of 2034 bytes (see FIG. 3F). (1 sector size is 204
Although it is 8 bytes, since there is a pack header of every 14 bytes, the recording amount in one pack is 2034 bytes. ) 1
The I-picture size corresponding to the still image information is 203
Dummy information 1704 is recorded in a portion that is insufficient for an integral multiple of 4 bytes. This allows each I-picture to fit within an integer sector.

The I-picture size 180 in each VOBU
8 is a VO for a picture object as shown in FIG.
Since it is recorded in the information of the BU map (details will be described later), the dummy information 17
You know if 04 is in. Therefore, the dummy information 1704
Can be set arbitrarily.

The contents of the dummy information 1704 include not only padding data set to all “0” s or all “1s”, but also specific information that can be recognized as “dummy” only by reproducing that part. A code (or a packet header of stream ID = 0xbe) or the like can be recorded.

It should be noted that FIGS. 10B3 and 10D
In 3), the arrangement of I-pictures is omitted, but these have the same structure as in FIGS. 10 (a3) and 10 (c3).

For example, after a still image is shot by a digital camera, when it is desired to add a comment directly on the shot image (still image) by handwriting, the information is recorded as an I-picture in the V_PCK. Separately, a sub-picture pack (SP_PCK) as a sub-picture stream
Comment contents can be recorded in 1681, 1683, and 1684.

At the time of reproduction, I-picture still picture information in V_PCK and sub-picture (sub-picture) in SP_PCK
Overlay information.

The audio information obtained by inputting a comment or a description for each still image by voice is stored in an audio pack (A_PCK).
1691 to 1702.

As described above, the V_PCK information 1661 to 16
74, SP_PCK information 1681 to 1684, A_PCK
Information 1691 to 1702 is collected for each related still image, and is collected in units of VOBUs (video objects for picture objects) 1641 to 1650. Therefore, in the format shown in FIG. 10, different VOBUs are formed for each still image.

In the embodiment shown in FIG. 10, V_PCK and SP_PCK always precede A_PCK in the VOBU. As a result, each pack is separated in the VOBU, and management of information in each pack is facilitated.

However, in the embodiment of the present invention, the video object 1
A_PCK, V_P like the recording format in 012
It is also allowed that the order of CK and SP_PCK is mixed.

More specifically, all the V_PCKs 1664 having still picture information recorded in the I-picture format need to be arranged in the same VOBU 1642, but some of the audio information related to the VOBU 1642 The recorded A_PCK (1694) is the next VOBU16
43 is also allowed.

As will be described later with reference to FIG. 13, the reproduction end time (E_PTM) 181 of the audio information recorded in the VOBU map for picture object 1738
This is because continuous audio information can be separated for each still image using the information of No. 4.

In the format structure shown in FIG. 10 as a format in which a plurality of pieces of still picture information are continuously recorded, 1) one VOB is formed from a plurality of VOBUs; 2) one VOB is one VOBs having only VOBUs and recording one still image each are grouped to form a video title VTT; two methods are allowed, and mixed recording of both is permitted.

FIGS. 10 (b1) to (d3) show the former format structure (1), and FIG. 10 (a) shows the latter format structure (2).

The former format structure (1) is shown in FIG.
FIG. 10B shows a basic structure, and FIG. 10C shows a structure without sound information (A_PCK) as a special example.
Indicates a structure that does not include the original still image (V_PCK).

[0147] After recording a plurality of pieces of still picture information not containing audio information, for example, shot by a digital camera, on the information storage medium (optical disc 1001) at once, each still picture is viewed while viewing the plurality of pieces of recorded still picture information. Memo input (additional recording as SP_PCK) or voice input (A_
PCK).

In this case, only the additional information (memo or audio format) is collected and the VO in which the original still picture information is recorded is collected.
If a VOB different from B is formed and recorded on the information storage medium (optical disc 1001), editing and recording can be performed more efficiently. This is because recording as another VOB does not require changing the VOB content in which the original still image information is recorded.

As described above, the VOB which collects only the additional information (memo and audio format) for the purpose of editing the still picture information
The recording format in 1634 has a structure similar to FIG. 10D (A_PCK and SP_PC without V_PCK).
K only).

Note that FIGS. 10A3 and 10C
The I-picture of 3) corresponds to the I-picture of FIG. 3 (j), and the dummy of FIGS. 10 (a3) and 10 (c3) corresponds to the dummy pack DM_PCK of FIG. 3 (f).

The video pack V_PCK, sub-picture pack SP_PCK, and audio pack A_PCK shown in FIGS. 10 (a1) to 10 (d3) are respectively shown in FIG.
V_PCK, SP_PCK and A_PCK.

Dummy pack DM_P in FIG. 3 or FIG.
The CK can be appropriately used for recording audio data for after recording and other uses. For example, when the size of an encoded I-picture data block does not become an integral multiple of the error correction code (ECC) block size (16 sectors, 32 kbytes) using a product code, the I-picture data block size is used. DM_PCK can be appropriately added to this data chunk so that is an integer multiple of 32 kbytes.

If the data block size of all I-pictures constituting a still picture is matched in ECC block units (integer multiple of 32 kbytes) by adding DM_PCK, the following merits are obtained.

For example, when a part of a group of still images continuously recorded on the medium shown in FIG. 1 is later replaced (or erased) with another still image, the still image (I) of the replaced portion (erased portion) is replaced. -Picture) is an ECC block unit even if its size is different from that of the original still image, so that the ECC block unit of the I-picture of a part that is not replaced (a part that is not erased) does not collapse.

Therefore, even if a part of the still picture group is later replaced (or erased) with another still picture, it is not necessary to re-code the ECC of the I-picture of the part that is not replaced (the part that is not erased). . Since the operation of the RTR recorder is accelerated by the necessity of re-executing the ECC coding, editing of a still image group after recording (replacement or deletion of a part of still images) can be performed smoothly.

However, when the size of the still image to be replaced is larger than the size of the original still image, a part of the data of the still image to be replaced is moved to another recording location and recorded. In other words, fragmentation (fragment
ation) occurs. When the seek speed of the disk drive that reads data from the medium in FIG. 1 is slow, it may take a little time to reproduce a still image with fragmentation. Therefore, RTR without high-speed drive
When the recorder is used for reproducing a still image, it is better to appropriately arrange the recorded data (record again so as to eliminate fragmentation) after the editing of the still image group is completed.

When the latter format (2) is adopted as a format in which a plurality of pieces of still picture information are successively recorded, a plurality of VOBs are grouped as shown in FIG. Title VTT1
407 and 1408 belong to the groups.

In the recording format shown in FIG. 10, at least two still images are stored in an information storage medium (optical disc 100).
1) It is possible to record continuously on the upper adjacent position, and in general, it is a format in which a plurality of still images can be continuously recorded. For this reason, for example, when a plurality of still images taken by a digital camera are recorded on the information storage medium (optical disc 1001) at a time, there is a great effect / feature that high-speed recording is possible.

In addition, a recording format in which a plurality of still images can be recorded in a VOB has a great effect as described below.

Conventionally, the recording format of a plurality of still images shot by a digital camera is divided into different still image data files and recorded. When each still image information is divided and recorded in a separate file, there is no photographing order information between each still image information and no grouping information between similar still image information. In contrast, photographic film always comes with a negative film (or a positive film if necessary). Therefore, when it is desired to specify a specific still image due to additional printing or the like, it is possible to search for a desired still image while following the shooting order on the negative film.

The information recording / reproducing apparatus (video recorder) for recording video information shown in FIG. 19 reads information of the video object 1632 for picture objects recorded on the information storage medium (optical disc 1001).
Each VOBU1642 like a positive film as shown in
１６1644 can be displayed on the screen in the order of arrangement.

For example, the still image at the left end in FIG.
1642, and the still image at the center is VOBU 164
3 is displayed. The still image in FIG. 11 can be moved left and right on the screen, and the user specifies a still image to be edited (or hard copied). Unlike the video object 1012, the still image information designates each still image using the display as shown in FIG. (In the video object 1012, the video information range to be edited is specified by the display time.) [8] Data structure in video object information related to still image information Next, the data structure in video object information related to still image information will be described.

The video object information (or AVFIT) 1107 shown in FIG. 1 (f) includes a management information part (M_AVFIT in FIG. 8) for general video information and a management information part (S_AVFIT in FIG. 8) for still picture information.
Is divided into The data structure in the management information portion relating to the latter still image information has a structure shown in FIG.

The navigation data RTR_VM shown in FIG.
G still image AV file information table (S_A
VFIT), as shown on the left side of FIG.
File information table information (S_AVFITI) and still picture VOB stream information (S_VOB_STI # 1)
To #n) and still image AV file information (S_AVFI)
And additional audio stream information (S_AA_STI # 1 to #m) for the still image, and additional audio file information (S_AAFI) for the still image.

Still picture AV file information (S_AVFI)
As shown in the center of FIG. 12, VOB information 1721 for picture object management information (or general information S_AVFI_GI of S_AVFI) 1721 and a search pointer # 1 for VOB information for picture objects (or a search pointer for still image VOB group information) S_VOGI_S
RP # 1) 1726 to #i (S_VOGI_SRP #)
i) 1727 to #k (S_VOGI_SRP # k) 17
28 and picture object VOB information # 1 (or still image VOB group information S_VOGI # 1) 173
1 to #i (S_VOGI # i) 1732 to #k (S_V
OGI # k) 1733.

VOB information for picture object #i
(Or still image VOB group information S_VOGI # i)
Reference numeral 1732 has contents as shown on the right side of FIG. 12 (the same applies to VOB information # 1 and #k for picture objects).

That is, the VO for each picture object
The B information #i (or S_VOGI #i) includes VOB general information (or still image VOB group general information S_VOG_GI) 1736 of the picture object, VOB attribute information 1737 of the picture object, and a VOBU map (or one or more) of the picture object. VOB entry for still image S_VOB_ENT #) 1738.

Here, S_VOG_GI is the number of VOBs (S_VOB_Ns), still picture VOB stream information number (S_VOB_STIN), and time information (FIR) when the first VOB in this VOB group was recorded.
ST_VOB_REC_TM) and time information (LAS) when the last VOB in this VOB group was recorded.
T_VOB_REC_TM) and the start address (S_VOG_S) of this VOB group in the still image AF file
A). This S_VOG_SA is S_A
The relative address from the head of the VFI is represented in sector units.

On the other hand, each S_VOB_ENT # has four types (type 1 to type 4), and each has the following contents: (1) Type 1 S_VOB_ENT is a VO of a still image.
Information indicating the format of the B entry (S_VOB_ENT_T
Y) and information (V_PART_SZ) indicating the size of the video part in the still image VOB in sector units.

(2) S_VOB_ENT of type 2 is
S_VOB_ENT_TY and V_PAR of type 1
In addition to T_SZ, information (A_PART_SZ) indicating the size of the original (original) audio part in the still image VOB in units of sectors, and information (A_P indicating the playback time of this audio part in units of video fields)
B_TM). If the actual playback time of the audio part does not match the boundary of the video field, the part of the end data of the audio part that extends beyond the video field is discarded.

(3) Type 3 S_VOB_ENT is
S_VOB_ENT_TY and V_PAR of type 1
In addition to T_SZ, number information (S_AAGN) of the additional audio group included in the audio stream added to the still image VOB, and information (AA_A_N) of the entry number corresponding to the still image VOB additional audio stream
ENTN).

(4) S_VOB_ENT of type 4 is
Type 2 S_VOB_ENT_TY, V_PART_
In addition to SZ, A_PART_SZ and A_PB_TM, it includes Type 3 S_AAGN and AA_ENTN.

The above S_VOB_ENT type 1 to type 4 are all of type 1 S_VOB_ENT_T
Y and V_PART_SZ are commonly included.

Each S_AA_STI on the left side of FIG.
(# 1 to #m) include audio attribute information of the additional audio stream. From this point of view, S_
AA_STI corresponds to VOB attribute information 1737 on the right side of FIG.

The still image information grouped into separate picture object video objects (picture object VOBs) is the picture object video object information (or S_VOG) in FIG.
I # 1 to S_VOGI # k) 1731 to 1733.

The information contents shown on the right side of FIG. 12 will be briefly described below.

Information 1732 of FIG. 12 includes the following information: * VOB general information for picture object (or S_
VOG_GI) 1736 ··· For example, cell reproduction information (CI in FIG. 1 or S in FIG. 23)
ID information uniquely set for each VOB so that a specific VOB can be specified in the _CI) 1108; VOB type information: information to which of (a) to (d) in FIG. 1012) / still image information (picture object 1013) / audio information (audio object 1014), such as the date and time when the VOB was recorded on the information storage medium (optical disc 1001), etc .; * VOB attribute information for picture object 1737 ··· Attribute information of still image information such as resolution of still image information; · Attribute information of audio information; · Number and recording format of sub-picture information; * VOBU map for picture object 1738 ... · All still images included in VOB Information about the picture.

[0178] Information * as described above is recorded.

[0179] The management information 1721 of the video object information for picture objects includes:-the number of VOBs for picture objects contained in this AV file;-general information on VOBs contained in this AV file; Have been.

The address information of where the picture object video object information 1731 to 1733 information is recorded in the video object information 1107 shown in FIG. 1F is the same as the picture object video object information. Search pointer 1
726 to 1728.

[9] Data Structure in VOBU Map Regarding Still Image Information Next, referring to FIG.
The data structure in the U map 1738 will be described.

At the beginning of the VOBU map for picture object (S_VOB_ENT #) 1738, FIG.
, The number of still images included in the corresponding VOB (the number of VOBUs; or the number of VOBs S_VOB_
Ns) 1801 is described.

After that, according to the order in which they are arranged in the VOB, information (1 content) regarding each still image (the contents of the VOBU) is obtained.
802, 1803, 1804,...) Are described.

Information shown on the right side of FIG. 13 is recorded as information (for example, 1803) on each still image (the contents of the VOBU).

In FIG. 13, the information of VOBU 1411 (FIG. 3E) having one piece of still image information including audio information includes a plurality of sectors 1431 to 1434 as shown in FIG. Is divided and recorded. The data size (V_PART_SZ and / or A_PART_) for this one still image information (VOBU)
SZ) 1806 can be represented by the number of sectors that are divided and recorded.

For a VOBU having an audio pack A_PCK inside as shown in FIGS. 10 (a) and 10 (b), the display time 1807 of one still image is VOBU.
VOBU that does not have audio pack A_PCK as shown in FIG.
Represents a still display period of a still image.

VOB in which information of one still image is recorded
The following information (FIG. 13) is recorded as information relating to the still image information itself in U.

* First V_PCK in the corresponding VOBU
Address (or S_VOG_SA) 1808... Taking FIG. 10 as an example, V_V is located at the beginning of each VOBU.
PCK1661, 1664, 1665, 1666, 166
7, 1668, 1671, 1674, etc. are recorded. VOB ID containing the still image you want to see
When a still image number (VOBU number) within the VOB is specified, the optical head (not shown) directly accesses the head V_PCK address of the corresponding VOBU using this address information.

In general, an LSN (logical sector number) indicating a direct position on an information storage medium (optical disc 1001) as shown in FIG. 4 is used as address information. However, the present invention is not limited to this address display method, and there are other application examples. For example, as shown in FIG. 9A3, an address on a medium may be displayed by the number of sectors (relative address) counted from the head address of the same VOB in sequence order according to the data sequence order.

* I-picture size 1809 in the corresponding VOBU ... As described with reference to FIGS. 10 (a3) and 10 (c3),
Dummy information 1704 is recorded in a portion of the data size of the pictures 1706 and 1707 that is insufficient for an integral multiple of the pack size of 2034 bytes.

Therefore, if the I-picture size is known in advance, the place where the dummy information 1704 is recorded is known, so that the operation of accessing the next place can be started without reproducing this part at the time of reproduction. . Then, high-speed reproduction can be realized.

* Still image (V_PCK & SP_PCK) playback (presentation) start time (S_PTM) 1
810 This means information indicating the display timing of a still image at the time of reproduction and a sub-video to be added thereto. According to the present invention, at the time of reproduction, the still image recorded in the V_PCK and the sub-image added thereto are simultaneously displayed. It is used for setting the display timing between the audio information in the same VOBU.

* First system clock (First_SCR) 1811 of still picture (V_PCK) 1811 This is the value of the system clock when the first V_PCK in the VOBU is created for recording on the information storage medium (optical disc 1001). This means that this information is used when performing seamless (continuous) playback.

Next, the following information is recorded as information on audio information in the VOBU in which one piece of still image information is recorded.

* First A_PCK address 18 in VOBU
12..., Which are A_PCKs 1691, 1693, 1694, 1695,
Address information such as 1696, 1699, and 1702 is recorded. When the ID of the VOB containing the still image to be viewed and the still image number (VOBU number) in the VOB are specified, the optical head (not shown) uses this address information to start the corresponding A_PCK of the VOBU. Access the address directly.

As shown in FIG. 14C, according to the present invention, audio information (A_PCK information) in one VOB is
It can be displayed in combination with still image information belonging to OB. Therefore, this information is used when only the audio information in the VOB is selectively reproduced.

* Playback (presentation) start time (S_PTM) 1813 of audio information (A_PCK) 1813 means information indicating the output timing of audio information at the time of reproduction. In most cases, this value is used for still images (V_PCK
& SP_PCK).
However, after displaying the still image screen, a specific time (for example, 0.
If it is desired to output a sound after 5 seconds), this value can be shifted intentionally.

As described above, this information can be used for the timing control between the still image display and the audio information output.

* Reproduction end time (E_PTM) 1814 of audio information (A_PCK) This means information indicating the timing at the end of the output of audio information during reproduction, and is information between the still image display and audio information output. This information is used for timing control.

In many cases, this value matches the S_PTM 1810 of the next still image (V_PCK & SP_PCK) to be displayed. However, if it is desired to display the still image information to be displayed next only after a specific time (for example, 0.5 seconds) has elapsed after the end of the audio output, this value can be shifted intentionally.

* First system clock reference (First_SCR) 181 of audio information (A_PCK)
5 This means the value of the system clock when the first A_PCK in the VOBU is created for recording on the information storage medium (optical disc 1001), and this information is used when performing seamless (continuous) playback. You.

* Last system clock reference (Last_SCR) 1816 of audio information (A_PCK)
This means the value of the system clock when the last A_PCK in the VOBU is created for recording on the information storage medium (optical disc 1001), and this information is used when performing seamless (continuous) playback. .

The contents corresponding to A_PB_TM mentioned in the description of S_VOB_ENT in FIG.
It can be represented by a pair of rst_SCR and Last_SCR.

By recording the reproduction time information (PTM information) and the system clock reference information (SCR information) relating to the still picture information and the audio information in this manner, FIG.
There is a feature that the video information belonging to the video object 1012 in (d) can be used as a part of the still image information.

That is, new video object information (S_VOB) for a still picture object for a still picture is defined as follows, without processing the video information itself belonging to the video object 1012 at all.

Here, a case will be described in which a still image whose display is switched every two seconds is defined for the conventional video information (video object 1012).

Generally, in MPEG video information, one GOP
Is about 0.5 seconds, the length of one VOBU shown in FIG. 3E is often about 0.5 seconds. Then, 2 seconds (still image switching interval) ÷ 0.5 seconds (VO
From (BU interval) = 4, the I-picture at the head of the GOP is regarded as a still image for each of the four VOBUs, and information of the head V_PCK address 1808 in the VOB and the I-picture size 1809 in the VOB are set. .

Along with this setting, the numerical value of each information on the right side of FIG. 18 is set in the same manner.

As a result, as shown in FIG.
By displaying still image information and audio information belonging to the OB (VOB # A, VOB # B) in combination, only the audio part in the video information belonging to the video object 1012 is output as audio when the still image is displayed, Only the scenes that the user likes in the video information belonging to 1012 can be converted into still images and displayed.

[10] Display Method of Plurality of Still Images Next, a method of displaying a plurality of still images will be described.

As a method for displaying information on a plurality of still images recorded on the information storage medium (optical disk 1001), a method for arranging a plurality of still images at a time as shown in FIG. 11 (however, still images displayed side by side move. And switching), there is a method in which only one still image is displayed at a time and the displayed still image is changed at a specific time. In either case, the data structure uses cells and PGC information as shown in FIGS. 6 and 7, and the user can select a display method by using an information recording / reproducing apparatus for recording video information (DVD_RTR video recorder) shown in FIG. It has become.

As in the video object information 1107,
The cell reproduction information (or CI) 110 shown in FIG.
8 contains cell playback information (M_C
I) and cell reproduction information (S_CI) related to still image information.

Cell playback information (S_C) related to still picture information
In I), as shown in FIG. 14, the structure is such that a still image and audio information can be reproduced from different places and displayed in combination.

That is, as shown in FIG. 14 (c), V_PCK1852, 1854 and SP_PCK1848 used for display in a cell designate still images 1832, 1834 in VOB # A · 1821, and are output from the same cell. Voice information is a VOB # different from VOB # A · 1821
The audio information 1845 and 1846 in B.1822 can be designated.

This structure is convenient for setting after recording for a still image. For example, still image information taken by a digital camera without a voice input function is directly used as an information storage medium (optical disc 1001).
, The recording result has a structure that does not include the audio pack A_PCK as shown in FIG. 10 (c3).

While reproducing the information and displaying it on the screen as shown in FIG. 11, a commentary or comment is inputted for each of the “voice input by microphone”, “overwriting of handwritten mark”, “key”. Consider adding text information by inputting text information.

In this case, the recording format is changed as shown in FIG.
If an attempt is made to change the structure including A_PCK from 3) to a structure including A_PCK as shown in FIG. 10B3,
A process of redoing recording on the information storage medium (optical disc 1001) occurs. Then, the processing becomes troublesome and the processing time is significantly increased.

On the other hand, without modifying the data not including the audio pack A_PCK shown in FIG. 10 (c3), only the additional information is stored in another VOB as shown in FIG. 10 (d).
If the information is recorded on the information storage medium (optical disc 1001) as 1634, the subsequent information adding process to the still image can be performed very easily and in a short time. In this case, at the time of display, as shown in VOBs 1403 to 1405 in FIG. 3D, VOB1633 and VOB16 in FIGS.
34 are combined and displayed / output.

FIG. 15 shows the data structure in the picture object cell reproduction information (S_CI) that enables the expression of FIG.

First, ID information (or CI_SRP) 1873 which is an identifier unique to a cell is described.

The cell type information (or C
_TY) 1880 is: 1) Cell information related to video information (video object 1012) or a still image (picture object 1013)
1) identification information indicating whether the cell information is related to cell information or only audio information (audio object 1014); and 2) a VOB in which a plurality of still images are recorded in the VOB (FIG. 1).
0 (b) to (d) format) (cell structure corresponding to the structure of FIG. 15), or cell information corresponding to a VOB in which only one still image is recorded in the VOB (format of FIG. 10 (a)) And identification information relating to the information (the structure in FIG. 16 corresponds).

As described above, by absorbing the difference in the recording format of the VOB in which the still image is recorded at the level of the picture object cell reproduction information (S_CI),
Overcoming differences in VOB recording formats, at the PGC level shown in FIG. 7, both still images and moving images can be reproduced and displayed in the same sequence without distinction between still images (stills) and moving image information (movies). There is a big feature here.

In the embodiment of FIG. 14, VOB # A · 1821 is specified as ID information 1874 of the VOB in FIG. 15 in which the video pack V_PCK is recorded. VO
To display from the second still image of B # A · 1821, the still image number 2 of VOB # A · 1821 is designated as the still image designation 1875 to be displayed first in the cell.
According to the embodiment of FIG. 14, VOB # A · 182 is added to the still image designation 1876 to be displayed last in the cell.
No. 1 is designated as the still image number h.

As described above, the cell object reproduction information (S_CI) for picture objects has a great feature in that the "still image" itself is specified as the specification target.

In the embodiment shown in FIG. 15, "still image number" is specified as a method of specifying a still image, but the present invention is not limited to this, and a "unit in which a still image is recorded (for example, VOBU)"
It is also possible to specify by "designation of itself", "designation of the head address where the still image is recorded", "sequence order in VOB", and the like.

In FIG. 15, the first and last still images in the cell are specified. However, instead of the above display method, the number of still images to be displayed first in the cell and the total number of still images to be displayed in the cell are changed. Is also displayed.

Similarly, in FIG. 15, ID information 187 of the VOB in which audio pack A_PCK is recorded is shown.
7 (VOB # B · 1822 is designated in the embodiment of FIG. 14) and audio information (A_PC
Still image number 1878 (still image number j is designated in the embodiment of FIG. 14) indicating the recording destination of K) is described.

In FIG. 15, the still picture number information indicating the recording destination of the audio information (A_PCK) output last in the cell is not described.

However, the still picture number 1875 displayed first in the cell and the still picture number 187 displayed last in the cell
6, the total number of still images to be displayed in the same cell can be known, and the audio information (A_PC
Still image number information indicating the recording destination of K) does not need to be described.

In the case where audio information is specified for all still images in FIG.
The display time per still image can be known from the PTM 1813 and the E_PTM 1814. On the other hand, when audio information is not specified for a specific VOBU, the display time of a still image is set using the information of the still display time 1879 per still image.

In FIG. 15, 1873 to 1876 correspond to the still picture file (RTR_STO.VRO) in FIG. 2, and 1877 to 1879 correspond to the after-recording audio file (RTR_STA.VRO) in FIG.

[11] Grouping / Display Method When Only One Still Image is Recorded in One VOB Next, a grouping / display method when only one still image is recorded in one VOB will be described. .

If only one still image is recorded in one VOB (video object for picture object) 1631 as shown in FIG.
Collect and group OBs and treat them as part of titles.

The grouping information is the same as the video title set information (or RTR_VMG) shown in FIG.
I) It is recorded in the part of title information 1753 shown in FIG.

The data structure in the part-of-title information 1753 relating to the still image shown in FIG. 17 and the data structure in the VOB map for picture object 1899 therein are the same as the video object information (S_VOG) shown in FIG.
I #) and the data structure in the picture object VOBU map (S_VOB_ENT #) shown in FIG.

The structure of the picture object cell reproduction information (CI) shown in FIG.
It has the same structure as _CI.

Next, an example of an information recording / reproducing apparatus (DVD_RTR video recorder) for recording video information will be described.

FIG. 19 is a diagram for explaining a block configuration in the DVD_RTR video recorder.

The device main body of the video recorder shown in FIG. 19 is, roughly speaking, an information storage medium (optical disk) 10.
01 is rotated and the information storage medium (optical disc) 1
001, a disk drive for recording and reproducing video information, and an encoder 155 constituting the recording side
0, a decoder unit 1560 constituting the reproducing side, and a system control unit (MPU unit) 1530 which incorporates a ROM (eg, a program memory) and a RAM (eg, a work memory) and controls the operation of the apparatus main body. ing.

The encoder section 1550 includes an ADC (analog-to-digital converter) 1552, a video encoder (V encoder) 1553, an audio encoder (A encoder) 1554, and a sub-picture encoder (SP).
Encoder 1555, a formatter 1556, and a buffer memory 1557.

The ADC 1552 has an AV input unit 1542.
, An external analog video signal and an external analog audio signal, or an analog TV signal and an analog audio signal from the TV tuner 1544 are input. This ADC
1552 digitizes the input analog video signal at, for example, a sampling frequency of 13.5 MHz and a quantization bit number of 8 bits. (That is, the luminance component Y,
Each of the color difference component Cb (or YB or U) and the color difference component Cr (or YR or V) is quantized by 8 bits. Similarly, the ADC 1552 converts the input analog audio signal to, for example, a sampling frequency of 48 kHz.
Digitization is performed with a quantization bit number of 16 bits.

When an analog video signal and a digital audio signal are input to ADC 1552,
The ADC 1552 allows the digital audio signal to pass through. (The contents of the digital audio signal are not altered,
Processing to reduce only jitter accompanying digital signals,
Alternatively, processing for changing the sampling rate and the number of quantization bits may be performed.

When a digital video signal and a digital audio signal are input to ADC 1552,
The ADC 1552 allows the digital video signal and the digital audio signal to pass through (the jitter reduction processing and the sampling rate change processing may be performed on these digital signals without altering the content).

In the case where, for example, still image information from the digital camera 1543 is input in addition to the video signal input, the information is input directly to the V encoder 1553 without passing through the ADC 1552.

The digital video signal component from ADC 1552 is sent to formatter 1556 via video encoder (V encoder) 1553. ADC
The digital audio signal component from 1552 is sent to a formatter 1556 via an audio encoder (A encoder) 1554. Or V encoder 1
The still image signal directly input to the 553
53 to a formatter 1556.

The V encoder 1553 has a function of converting an input digital video signal into a digital signal compressed at a variable bit rate based on the MPEG2 or MPEG1 standard.

[0247] Still image information is recorded in the digital camera 1543 in a format such as a bitmap format or a JPEG format. On the other hand, in this embodiment, a still image is recorded on the optical disc 1001 in the MPEG2 I-picture format. Therefore, in this embodiment, “bitmap → MPEG2”, “JPEG
The V encoder 1553 also has a format conversion function such as "MPEG2".

The A encoder 1554 converts the input digital audio signal to MPEG or AC-3.
It has a function of converting into a digital signal (or a linear PCM digital signal) compressed at a fixed bit rate based on a standard.

When a video signal is input from AV input section 1542 (for example, a DV with an independent output terminal for a sub-picture signal)
When a video signal having such a data configuration is broadcast and received by the TV tuner 1544, a sub-video signal component (sub-video pack) in the video signal is It is input to an encoder (SP encoder) 1555. SP encoder 15
The sub-picture data input to 55 is arranged in a predetermined signal form and sent to formatter 1556.

The formatter 1556 performs predetermined signal processing on the input video signal, audio signal, sub-picture signal and the like while using the buffer memory 1557 as a work area, and conforms to a predetermined format (file structure). Data recorded by the data processor 1536
Output to

In the case of digital broadcasting, the video signal is MPE
It is transmitted in the TS (transport stream) format of G2. Generally, when a video signal is recorded on the information storage medium (optical disc) 1001 in the MPEG2 format, the PS (program stream) format is used. Therefore, when a digital broadcast is received, the received signal is sent directly from the TV tuner 1544 to the formatter 1556, where the “TS → PS conversion” is performed.
Is performed.

Here, the contents of the standard encoding process for creating the recording data will be briefly described. That is, when the encoding process is started in encoder unit 1550 in FIG. 19, parameters necessary for encoding video (main video) data and audio data are set. Next, the main video data is pre-encoded using the set parameters, and the optimal code amount distribution for the set average transfer rate (recording rate) is calculated. Encoding of the main video is executed based on the code amount distribution obtained by the pre-encoding in this manner. At this time, the encoding of the audio data is also executed at the same time.

As a result of the pre-encoding, when the data compression amount is insufficient (when the desired video program cannot be accommodated in the optical disc 1001 to be recorded), if there is a chance to pre-encode again (for example, if the recording source is video If the source is a repeatable source such as a tape or video disc), partial re-encoding of the main video data is performed, and the re-encoded main video data replaces the previously pre-encoded main video data portion Is done. By such a series of processing, the main video data and audio data are encoded,
The value of the average bit rate required for recording is greatly reduced.

Similarly, parameters necessary for encoding the sub-picture data are set, and the encoded sub-picture data is created.

The main video data, audio data and sub-video data encoded as described above are combined and converted into a desired video object data structure.

That is, main video data (video data)
Is set as the minimum unit of the program, and then the configuration of the cells constituting the program chain, the attributes of the main video, sub-video and audio, etc. are set (a part of these attribute information is used when encoding each data. The obtained information is used), and management information including various information is stored in a management information recording area (control information 10 in FIG. 1D).
11 or RTR. IFO).

The encoded main video data, audio data and sub video data are subdivided into packs of a fixed size (2048 bytes). These packs include:
A dummy pack is inserted as appropriate. In the packs other than the dummy pack, PTS (presentation time stamp), DTS (decode time stamp)
Etc. are described. For the PTS of the sub-picture, a time arbitrarily delayed from the PTS of the main picture data or audio data in the same reproduction time zone can be described.

Each data cell is arranged in VOBU units so that the data can be reproduced in the time code order, and a VOB composed of a plurality of cells is constructed.

When digitally copying video information from the digital output of the DVD_RTR video recorder shown in FIG. 19, the contents of the cell, the program chain, the management table, the time stamp and the like are determined from the beginning. do not have to.

The configuration for reading / writing (recording and / or reproducing) information from / to the optical disk 1001 includes a disk drive unit (disk changer unit) 1500,
It includes an information recording / reproducing unit 101, a temporary storage unit 1534, a data processor 1536, and a system time counter (or system time clock; STC) 1538.

[0261] The temporary storage unit 1534 stores the information recording / reproducing unit 1
01 buffered for a certain amount of data (data output from the encoder unit 1550) written to the optical disc 1001 via the data recording / reproducing unit 101, and data (decoder unit) reproduced from the optical disc 1001 via the information recording / reproducing unit 101. This is used for buffering a certain amount of the data input to 1560).

For example, when the temporary storage unit 1534 is formed of a 4 Mbyte semiconductor memory (DRAM), it is possible to buffer recording or reproduction data for about 8 seconds at an average recording rate of 4 Mbps. Further, when the temporary storage unit 1534 is constituted by a 16 Mbyte EEPROM (flash memory), it is possible to buffer recording or reproduction data for about 30 seconds at an average recording rate of 4 Mbps. Further, when the temporary storage unit 1534 is formed of a 100 Mbyte ultra-small HDD (hard disk), it is possible to buffer recording or reproduction data for 3 minutes or more at an average recording rate of 4 Mbps.

The temporary storage unit 1534 can also be used to temporarily store recording information until the optical disk 1001 is replaced with a new disk when the optical disk 1001 is used up during recording.

In the case where a high-speed recording / reproducing unit of 2 × speed or more is employed as the information recording / reproducing unit 101, the temporary storage unit 1534 temporarily stores extra data read from a normal drive within a certain time. It can also be used to store.

The read data at the time of reproduction is temporarily stored in the storage unit 15.
If the data is buffered in the buffer 34, even if an optical head (not shown) causes a reading error due to a vibration shock or the like, the reproduced data buffered in the temporary storage unit 1534 is switched and used so that the reproduced video is not interrupted. Can be.

Although not shown in FIG. 19, DVD_
If an external card slot is provided in the RTR video recorder, the EEPROM can be sold separately as an optional IC card. If an external drive slot or a SCSI interface is provided in the DVD_RTR video recorder, the HDD can be sold separately as an optional extended drive.

In the embodiment in which the personal computer is converted into a DVD_RTR video recorder by software, a part of the free space of the hard disk drive of the personal computer itself or a part of the main memory can be used as the temporary storage unit 1534 in FIG.

A data processor 1536 shown in FIG. 19 includes a system control unit (MPU unit) [built-in ROM / RAM] 153.
According to the control of 0, supply of the video information signal for recording from the encoder unit 1550 to the information recording / reproducing unit 101, transfer of the video information signal reproduced from the information recording / reproducing unit 101 to another part. Processing-Rewriting of management information (control information 1011) recorded on optical disc 1001-Video information and management information (control information 1011 or RTR.IFO) which are data recorded on optical disc 1001
Alternatively, a partial deletion process of RTR_VMG) is performed.

System control unit 1530 includes an MPU (or CPU), a ROM that is an IC memory in which a control program and the like are written, and a RAM that is an IC memory that provides a work area necessary for executing the program.

The contents to be notified to the user of the information recording / reproducing apparatus (recording / reproducing recorder) for recording video information out of the execution results of the system control section 1530 are the video recorder display section 1548.
Will be displayed.

A system control unit (MPU unit) 1530
Is the disc changer section 1500 and the information recording / reproducing section 10
1. The timing for controlling the data processor 1536, the encoder 1550, and / or the decoder 1560 can be executed based on the time data from the STC 1538.
Executed in synchronization with the time clock from 538,
Other processing may be executed at a timing independent of STC 1538).

[0272] The decoder section 1560 is
A separator 1562 for separating and extracting each pack from the video information having the pack structure recorded in No. 1 and a memory 156 used when performing the pack separation and other signal processing
3. A video decoder (V) that decodes the main video data (the contents of the video pack) separated by the separator 1562.
Decoder 1564, a sub-picture decoder (SP decoder) 1565 that decodes the sub-picture data (contents of the sub-picture pack) separated by the separator 1562, and a separator 1
An audio decoder (A decoder) 1568 that decodes the audio data (contents of the audio pack) separated by 562 and the sub-picture data from the SP decoder 1565 are appropriately combined with the video data from the V decoder 1564, and a menu, A video processor 1566 that outputs a highlight button, subtitles and other sub-images in a superimposed manner,
A video / digital / analog converter (V / DAC) 1567 for converting a digital video output from the video processor 1566 into an analog video signal, and an A decoder 1568
An audio / digital-to-analog converter (A / DAC) 1567 for converting a digital audio output from the A / D into an analog audio signal.

Analog video signal (video information signal in analog state) from V / DAC 1567 and A / DAC
The analog audio signal output from the AV output unit 15
An external component (not shown) (a multi-channel stereo apparatus of 2 to 6 channels + a monitor TV or a projector) is supplied via the link 46.

The OSD (On Screen Display) data output from the system control unit (MPU) 1530 is input to the separator 1562 of the decoder 1560,
The signal passes through a decoder 1564 (not particularly decoded) and is input to a video processor 1566. Then, this OSD data is superimposed on the main video, and
It is supplied to an external monitor TV connected to the output unit 1546. Then, a warning message is displayed together with the main image.

Next, each operation of the information recording / reproducing apparatus (DVD_RTR video recorder) for recording video information shown in FIG. 19 will be described.

Hereinafter, referring to the flowchart of FIG. 20, a plurality of still images will be stored in an information storage medium (DVD_RTR).
The procedure for recording on a disc will be described.

First, a still image file from the digital camera 1543 or the like is continuously input as data (step S).
T1).

Since the still picture file from the digital camera 1543 is generally recorded in the JPEG format or the bitmap format, the input still picture information is converted into MPEG2 I-picture data by the V encoder 1553 (step ST2). ).

Next, in the formatter 1556, 1
A VOBU structure having a data structure as shown in FIG. 3 is created for one piece of still image information, and a plurality of still images are grouped (grouped) to form a VOB (step ST3).

In parallel with the above processing, the information recording / reproducing unit 10
All control information 1 recorded on one optical disc 1001
011 (RTR.IFO / RTR_VMG),
The information is stored in the RAM unit (work memory) in the system control unit 1530 (step ST4).

In system control unit 1530, RAM
Control information 1011 (RTR.IFO / R
TR_VMG), the information of the allocation map table 1105 is searched, and the location of the unrecorded area 1460 (FIG. 4) is searched (step ST5).

Thereafter, control information is sent from the system control unit 1530 to the formatter 1556, the data processor 1536, and the information recording / reproducing unit 101, and the information recording / reproducing unit 1
01, a VOB having a plurality of pieces of still image information is recorded in the unrecorded area 1460 (step ST6).

At the time of recording, the system control unit 1530 monitors the recording state, and determines whether the recording of the VOB on the optical disk 1001 has succeeded (step ST7).

If a trouble occurs in the middle, steps ST4 to ST6 are repeated.

If the recording of the VOB on the optical disc 1001 succeeds, the system control unit 1530 executes the process shown in FIG. 12 based on the address information recorded on the optical disc 1001.
A VOBU map 1738 (or the VOB map 1899 in FIG. 17) is created (step ST9).

Lastly, the VOBU map 1738 (or VOB map 1) created in the system control unit 1530
899) using the information recording / reproducing unit 101 to control information 1011 (RTR.IF) on the optical disc 1001.
O / RTR_VMG) (step ST)
10).

Next, the procedure for reproducing still image information including audio information will be described with reference to FIG.

As in steps ST4 to ST5 in FIG.
001 and all control information 1011 (RT
R. (IFO / RTR_VMG) and stores the information in a RAM (work memory) in the system controller 1530 (step ST11).

Next, inside the system control unit 1530,
The control information 1011 (RTR.IF) stored in the RAM unit
O / RTR_VMG) from the reproduction control information 1021
The information of (CI) is searched, and the information on the reproduction method is interpreted (step ST12).

After that, in the system control unit 1530, a program of information to be reproduced is searched for from the program chain control information 1103 (PGCI) stored in the RAM unit, and cells included in the PGC information are extracted. .

Next, VOB_ID or PTT_ID designated by the corresponding cell is extracted from the cell reproduction information 1108 stored in the RAM unit (step ST13).

Further, inside the system control unit 1530, the video object information 1 stored in the RAM unit
From the part of title information 1753 (FIG. 8) in the video title set information 107 (AVFIT) or video title set information 1106 (RTR_VMG), the address on the optical disc 1001 where the VOB to be reproduced is recorded is extracted (step ST14).

At the time of reproduction, as shown in FIG.
A, the still image information itself is reproduced, and VOB # B
The voice information recorded in is displayed in a superimposed manner. Hereinafter, the reproduction procedure in this case will be described.

First, an optical head (not shown) in the information recording / reproducing section 101 is accessed based on a control signal from the system control section 1530 to reproduce VOB # B information recorded on the optical disc 1001. The audio information for a plurality of still images is stored in the memory 1563 (FIG. 1).
9) (Step ST18).

Next, the optical head (not shown) in the information recording / reproducing unit 101 is made to access the information recording position of VOB # A recorded on the optical disk 1001, and
The still image information in the file is reproduced (step ST16).

Finally, audio information in VOB # B and still image information in VOB # A are simultaneously output (displayed) by AV output 1546 (step ST17).

As described above, either only the audio information for a plurality of still images or only the still image information is reproduced collectively (for a plurality of images), the reproduction result is stored in the memory 1562, and the remaining By reproducing the information collectively and outputting (displaying) the information at the same time, the access frequency of the optical head (not shown) is different from the method of reproducing the still image information and audio information for each piece of still image information each time. Can be greatly reduced.

As a result, seamless continuous reproduction becomes possible (there is no temporary stop at the transition of the display of a still image or no interruption of audio information). Here, there is a great feature of the present invention.

In FIG. 21, the still picture information of VOB # A is reproduced after the reproduction of the audio information of VOB # B, but a change within a range not departing from the technical idea of the present invention (for example, the reproduction order is switched) Is possible.

FIG. 10 shows a recording format in which still picture information and audio information are stored in pairs in the VOBU. However, the present invention is not limited to such a format, and various modifications are possible.

For example, in the case of a recording format in which a plurality of V_PCKs are arranged collectively in the first half of one VOB or one PTT and a plurality of A_PCKs are arranged collectively in the second half, Are located apart from each other on the information storage medium (optical disk) 1001 with respect to the still image of V_PCK and A_PCK.

In this case, still picture information (V_PCK information) and audio information (V_PCK information) of the same still picture number in the same VOB
Even when sequentially reproducing (K information), access processing of the optical head is required.

Accordingly, as described above, a plurality of Vs are collected in the first half of one VOB or one PTT.
When reproducing a plurality of still image information from a picture object 1013 having a recording format in which _PCK is arranged and a plurality of A_PCKs are arranged together in the latter half, any one of the V_PCK information and the V_PCK information is reproduced first. Is read in advance for a plurality of sheets and stored in the memory 1563,
Thereafter, the remaining information is collectively reproduced and simultaneously output (displayed).

Next, with reference to FIG. 22, as another embodiment of the present invention, a method of additionally recording additional information for a still image by after recording will be described.

[0305] The additional information obtained by the after-recording is put into another group (another VOB or another PTT) different from the original still image information, and is synthesized and output (displayed) by the method shown in FIG. 14 during reproduction.

In FIG. 22, steps ST11 to ST14 follow the same procedure as in FIG.

In FIG. 22, system control unit 1530
An optical head (not shown) in the information recording / reproducing unit 101 is accessed based on a control signal from the CPU to reproduce VOB information recorded on the information storage medium (optical disk) 1001, and an AV output 1546 is used to reproduce the information. 11 is displayed (step ST18).

Next, the user receives additional information input while looking at the display screen, and based on the input information, groups a plurality of still images by the formatter 1556 to create a VO.
B or PTT is configured (step ST19).

[0309] Finally, the VOB information created by formatter 1556 is recorded on optical disc 1001 (step ST20).

FIG. 23 is a view for explaining the data structure of the navigation data (RTR_VMG) shown in FIG.
This RTR_VMG is the control information 110 in FIG.
2 correspond to the control information (RTR.IFO) 1011 in the file structure of FIG.

The navigation data RTR_VMG
Of the user-defined PGC information table UD-PGCI
T is the user-defined PGC information table information (UD-PG
CITI) and search pointers # 1 to #n of one or more user-defined PGC information (UD_PGCI_SRPs # 1 to #n)
n) and user-defined PGC information # 1 to #n (UD_PGCI # 1 to #n) corresponding to these search pointers.
n).

Further, individual user-defined PGC information (UD
_PGCI # 1 to #n) or PG having contents corresponding to original PGC information (ORG_PGCI)
C information #i (PGCI #i) is the PGC general information (PG
C_GI) and one or more pieces of program information # 1 to #m (P
GI # 1 to #m), one or more cell information search pointers # 1 to #n (CI_SRP # 1 to #n), and the number of cell information # 1 to #n (CI
# 1 to #n).

Each cell information search pointer (CI_S
RP # 1 to #n) include the start address (CI_SA) of the corresponding cell information and each cell information (C_SA).
One of I # 1 to #n) is movie cell information (M
_CI) or information of a still image cell (S_CI).

Note that RTR_VMGI in FIG.
(F) corresponding to the video title set information 1106,
M_AVFIT and S_AVFIT of FIG.
23 corresponds to the video object information 1107, and ORG_PGCI and UD_PGCIT in FIG.
This corresponds to the PGC control information 1103 of (f).

Further, PGCI # i in FIG.
23, and CI # in FIG. 23 corresponds to the cell reproduction information 1108 in FIG.

FIG. 24 shows the still picture cell information (S_
FIG. 3 is a diagram for explaining the contents of CI). The S_CI includes still picture cell general information (S_C_GI) and entry point information # 1 to #n of one or more still picture cells (S_C_EP).
I # 1 to #n). Here, S_C in FIG.
I corresponds to the cell reproduction information 1108 in FIG.

FIG. 25 is a view for explaining the contents of the still picture cell general information (S_C_GI) of FIG.

[0318] The S_C_GI is a cell type (C_TY) describing the format of the corresponding cell, a still picture VOB group information search pointer number (S_VOGI_SRPN) of the VOB group used by this cell, and a cell entry point in this cell. Number of information (C_EPI_N
s), the start address (S_S_VOB_ENTN) of the still picture VOB entry number of this cell, and the end address (E_S_VO) of the still picture VOB entry number of this cell.
B_ENTN).

Here, S_S_VOB_ENT in FIG. 25 is used.
N corresponds to the still image number 1875 in VOB in FIG. 15, and E_S_VOB_ENTN in FIG. 25 corresponds to the still image number 1876 in VOB in FIG.

FIG. 26 is a view for explaining the contents of each still picture cell entry point information (S_C_EPI) in FIG. There are two types of S_C_EPI (type 1 and type 2).

The type 1 S_C_EPI is an entry point type (EP
_TY) and the entry number (S_VOB) of the still image VOB
_ENTN).

The type 2 S_C_EPI is EP_TY
Primary text information (PRM_TXTI) is further included in addition to S_VOB_ENTN and S_VOB_ENTN. In this PRM_TXTI, comments and other information related to the corresponding still image can be recorded.

Note that S_VOB_ENTN in FIG. 26 is
One or more still image VOB entries S_VOB_ENT #
(VOB for picture object in FIGS. 12 and 13)
U map 1738 or the content of the picture object VOB map 1899 of FIG. 17).

FIG. 27 is a view for explaining the contents of the still image additional audio file information (S_AAFI) of FIG.

The S_AAFI is general information (S_AAFI_GI) of additional audio file information for a still image.
And search pointers # 1 to #n (S_AAGI_SRP # 1 to
#N) and the number of additional audio group information for still images # 1 to #n (S_AA) corresponding to the search pointers.
GI # 1 to #n).

Each of the still image additional audio group information (one of S_AAGI # 1 to #n) is composed of general information (S_AAG_G) of the still image additional audio group.
I) and one or more additional audio entries # 1 to #n
(AA_ENT # 1 to #n).

FIG. 28 is a view for explaining the contents of the general information (S_AAG_GI) of S_AAG in FIG.

This S_AAG_GI is the number of additional audio entries (AA_ENT_Ns) and the number of additional audio stream information for still image (S_AA_STI).
N) and the AAG start address (S_AAG_SA) in the still image additional audio file.

Here, AA_ENT_Ns in FIG. 28 is
The number of still images in VOB 1801 in FIG. 13 or P in FIG.
It has a value corresponding to the number of still images in TT 1901.

Further, S_AAG_SA in FIG. 28 is the first still picture address (the first still picture information 1 in VOB in FIG. 13).
802 or the first V_PCK address 180 in the VOBU
8; or the first still image information 1902 in the PTT in FIG.
Or, it corresponds to the first V_PCK address 1908 in the VOB.

FIG. 29 is a view for explaining the contents of the additional audio entry (AA_ENT) in FIG.

This AA_ENT is an additional audio type (AA_T) that describes the format of the additional audio (whether the format is normal or temporarily created).
Y) and the size of the additional audio stream (AA_S
Z) and the playback time of the additional audio stream (AA_
PB_TM).

Here, AA_SZ in FIG. 29 is the A_PCK address of the current additional audio (VOBU in FIG. 13).
In the top A_PCK address 1812 or VO in FIG.
B and the A_PCK address of the next additional audio (1812 in FIG. 13).
Alternatively, it has a value corresponding to the difference from 1912) in FIG.

Also, AA_PB_TM in FIG. 29 corresponds to FIG.
3 audio E_PTM 1814 to audio S_
PTM1813 minus audio S_PTM19 from audio E_PTM1914 in FIG.
13).

FIG. 30 is a view for explaining the contents of the still picture VOB group general information (S_VOG_GI) of FIG.

The S_VOG_GI includes the number of still picture VOBs (S_VOB_Ns) describing the number of video parts in the corresponding VOB group, the number of still picture VOB stream information (S_VOB_STIN), and the first VOB in the corresponding VOB group. Time when recorded (FIRST
_VOB_REC_TM) and the time (LAST_VOV) when the last VOB in the corresponding VOB group was recorded.
B_REC_TM) and the corresponding V in the still image AV file.
OB group start address (S_VOG_SA).

Here, S_VOB_Ns in FIG.
The number of still images in VOB 1801 in FIG. 13 or P in FIG.
It has a value corresponding to the number of still images in TT 1901.

The S_VOG_SA in FIG. 30 is the first still picture address (the top still picture information 1 in VOB in FIG. 13).
802 or the first V_PCK address 180 in the VOBU
8; or the first still image information 1902 in the PTT in FIG.
Or, it corresponds to the first V_PCK address 1908 in the VOB.

FIG. 31 is a view for explaining a first example (type 1) of the contents of the VOB entry for still image (S_VOB_ENT) in FIG.

The S_VOB_ENT type 1 includes a still picture VOB entry type (S_VOB_ENT_TY) describing the format of a still picture VOB entry, and the size of the corresponding still picture video part (V_PART_SZ).

Here, S_VOB_ENT_TY is equal to S_VOB_ENT_TY.
Information M describing what type _VOB_ENT is
AP_TY and information TE describing whether the corresponding VOB is in a normal state or in a state of being temporarily deleted (temporarily deleted state)
And information SPST_Ns describing the number of included sub-video streams (if zero, it is not included)
And

[0342] Also, V_PART_SZ is the corresponding VOB.
Describes the size of the video part in sectors.

This V_PART_SZ is the address of the first V_PCK in the VOBU of the current still picture (1 in FIG. 13).
808) and the head A_PCK in the VOBU of the current still image
13 (1812 in FIG. 13).

Alternatively, this V_PART_SZ is the address of the top V_PCK in the VOB of the current still picture (1908 in FIG. 18) and the top A_P in the VOB of the current still picture.
This corresponds to the difference from the PCK address (1912 in FIG. 18).

FIG. 32 is a view for explaining a second example (type 2) of the contents of the still picture VOB entry (S_VOB_ENT) in FIG.

The S_VOB_ENT type 2 corresponds to FIG.
S_VOB_ENT_TY and V_P of type 1
In addition to ART_SZ, A represents the size of the audio part originally attached to the corresponding still image VOB in sector units.
_PART_SZ and A_PB_TM representing the playback time of the audio part in video field units.

If the actual playback time of the audio part does not coincide with the boundary of the video field, the part of the end data of the audio part that extends beyond the video field is discarded.

Here, A_PART_SZ is the current V
Start A_PCK address in OBU (1812 in FIG. 13)
And the first V_PCK address in the next VOBU (1 in FIG. 13)
808).

Alternatively, A_PART_SZ is the head A_PCK address in the current VOB (1912 in FIG. 18).
And the start V_PCK address in the next VOB (19 in FIG. 18)
08).

A_PB_TM is the current S_PT
M1810; FIG. 13 (or the current S_PTM 191)
0; FIG. 18) and the next S_PTM 1810; FIG. 13 (or the next S_PTM 1910; FIG. 18).

Alternatively, A_PB_TM is the difference between S_PTM 1813 and E_PTM 1814 in FIG. 13 (or S_PTM 1913 and E_PTM 1813 in FIG. 18).
PTM1914).

FIG. 33 is a view for explaining a third example (type 3) of the contents of the VOB entry for still image (S_VOB_ENT) in FIG.

The S_VOB_ENT type 3 corresponds to FIG.
S_VOB_ENT_TY and V_P of type 1
In addition to ART_SZ, it includes an additional audio groove number (S_AAGN) of a still image and an additional audio entry number (AA_ENTN).

Here, S_AAGN indicates the number of the additional audio group including the additional audio stream of the corresponding VOB. This S_AAGN is represented by A in FIG.
This corresponds to ID information 1877 of the VOB containing _PCK.

AA_ENTN indicates the number of the additional audio entry corresponding to the additional audio stream of the VOB. This AA_ENTN is shown in FIG.
This corresponds to the still image number 1878 in the VOB including A_PCK of the first still image in the cell.

FIG. 34 is a view for explaining a fourth example (type 4) of the contents of the still picture VOB entry (S_VOB_ENT) in FIG.

This S_VOB_ENT type 4 corresponds to FIG.
S_VOB_ENT_TY and V_P of type 1
ART_SZ and A_PART_S of type 2 in FIG. 32
Z and A_PB_TM, and S_A of type 3 in FIG.
The contents are combined with AGNAA_ENTN.

S of type 1 to type 4 in FIGS. 31 to 34
_VOB_ENT, the same field name (S_V
OB_ENT_TY) have the same contents.

FIG. 35 shows original PGC information (O in FIG. 8 or FIG. 23) when only a still image VOB is recorded.
RG_PGCI) and a still image video file (RT in FIG. 2)
R_STO. FIG.

In the original PGC in which only the still picture VOB is recorded, the program chain information PGCI is composed of a sequence of cells, and each cell corresponds to a still picture VOB group.

Here, the still image VOB group is introduced to reduce the navigation data size associated with each still image VOB in consideration of a case where an enormous number of still image VOBs are recorded.

However, a cell cannot simultaneously refer to a movie VOB and a still picture VOB. Therefore, if the movie VOB and the still image VOB are recorded alternately, the still image VOB group may include only one still image VOB.

In FIG. 35, still picture VOB group information S_VOGI # 2 is shown in FIGS. 10 (a1) to 10 (d).
Suppose a case corresponding to VOBs 1631 to 1633 in 3).

Under this assumption, for example, FIG.
VOBU1641 of FIG. 10 and VOBU164 of FIG.
4 and VOBU 1646 of FIG.
It is included in OGI # 2. Then, the still image VOB of FIG.
The video parts in the group # 2 are packs 1661 to 1663 and 1681 in FIG.
This corresponds to the pack 1665 of 3) or the packs 1668 to 1670 and 1683 of FIG.

[0365] Also, S_VOGI # 2 in FIG.
Let us assume a case corresponding to VOB # A of 4 (a1).

Under this assumption, for example, FIG.
Still image number 2 of VOBU 1826 in (a2) is S_VO
This corresponds to VOB entry number 2 of GI # 2,
3) Packs 1852, 1848, 1 of still image 1832
862 corresponds to the center video part and audio part of the RTR_STO_VRO file in FIG. 35, and the pack 1853 of the still image 1833 in FIG.
It corresponds to the video part behind the R_STO_VRO file.

FIG. 36 shows the original PGC information (ORG
_PGCI) and the additional audio portion of the still image (R in FIG. 2)
TR_STA. FIG.

[0368] The VOB entry includes access information for the related video part and audio part.
These video part and audio part are both RTR_STO. Recorded in the VRO file. This audio part is recorded immediately after the associated video part.

[0369] The additional audio part accompanying the video part is RTR_STA. When recorded in the VRO file, the additional audio entry is described in a data field other than the VOGI, and the link from the VOB entry to the additional audio entry is described in the VOB entry.

In FIG. 36, the additional audio file RTR_STA. VRO is the VOB of FIG.
Suppose the case corresponding to #B.

Under this assumption, for example, FIG.
FIG. 14 (b) is obtained from A_PCKs 1865 and 1866 of FIG.
3) Arrows to A_PCK 1865, 1866 are indicated in FIG.
6 corresponds to the arrow from the VOB entry in S_VOGI # 2 to the additional audio entry on the right side thereof.

In this case, paying attention to the arrow of A_PCK 1866, A_PCK 1866 in FIG.
6 RTR_STA. Corresponding to the center audio part of the VRO, the still picture number h + j-2 in FIG.
A_PCK18 among the additional audio entries in FIG.
A part corresponding to 66 is configured.

The information portion connected by the arrow (V in FIG. 36)
OB entry part and additional audio entry part)
The cell reproduction information 1108 in FIG.
A link can be made using _CI.

Note that the RTR_STA. When the central audio part in the VRO file is audio information of after recording, A_PCK1866 of FIG. 14B3 corresponding to this audio part.
Is a dummy pack DM_PC as shown in FIG.
It can be configured using K.

FIG. 37 shows a still picture VOB (RTR_ST).
O. VRO file) and movie VOB (RTR_
MOV. FIG. 24 is a diagram illustrating a configuration example of original PGC information (ORG_PGCI in FIG. 8 or FIG. 23) including a VRO file).

In FIG. 37, program # 1 of PGCI # 1 corresponds to VTS 1762 in FIG.
VOGI # 1 and S_VOGI # 2 correspond to VOB # D1774 and VOB # E1775 of FIG. 9B3, and M_VOBI # 1 and M_VOBI # 2 correspond to FIG.
VOB # A1771 and VOB # B177 of (b3)
Let us assume the case corresponding to 2.

Under this assumption, the picture object 1013 shown in FIG. 9B3 corresponds to the RTR_ST shown in FIG.
O. The contents (video part and audio part) of the VRO file are configured, and the video object 1012 in FIG. 9B3 is replaced with the RTR_MOV. The contents (VOB # 1, VOB # 2,...) Of the VRO file are configured.

In FIG. 37, cell # and S in PGCI
The VOB entry in _VOGI # is, for example, as shown in FIG.
S_VOB_ENTN and E_S_VOB_E of
The link can be made using NTN.

[0379] Also, RTR_STO. VO specified by VOB entry of S_VOGI # and logical address of video part or audio part in VRO file
The B number can be linked using, for example, the relationship in FIGS. 4 and 5.

Now, the time map TMAP in M_VOBI # of FIG. 37 will be described.

Although not shown, the movie AV file information table M_AVFIT in FIG. 8 or FIG. 23 has movie AV file information general information (M_AVFI_GI).
And one or more movie VOB information search pointers (M_
VOBI_SRP # 1 to #n) and movie VOB information (M_VOBI # 1) corresponding to the search pointer
To #n).

Although not shown, each M_VOBI # includes movie VOB general information (M_VOBI_GI), seamless information (SMLI), and audio gap information (A
GAPI) and time map information (TMAPI).

This TMAPI is used when performing special reproduction (such as cell reproduction in an order unique to an individual user using a user-defined PGC) and time search.

Although not shown, the TMAPI includes general time map information (TMAP_GI), one or more time entries (TM_ENT # 1 to #r), and one or more VOBUs.
Entry (VOBU_ENT # 1 # q).

Each VOBU entry includes information on the size and reproduction time of each VOBU. The size of the VOBU is indicated in units of sectors (2 kbytes or 2048 bytes), and the reproduction time is a video field (one field 1/60 sec in NTSC;
Seconds).

Since the size of the VOBU is indicated in units of sectors as described above, the VOBU can be accessed by an address in units of sectors.

Although not shown, each VOBU entry includes reference picture size information 1STREF_SZ and VOBU.
It includes playback time information VOBU_PB_TM and VOBU size information VOBU_SZ.

Here, VOBU_PB_TM is the corresponding V
The playback time of the OBU is expressed in video field units. Also, reference picture size information 1STREF_
SZ is the first reference picture (MPEG) of the VOBU.
(Corresponding to the I picture of the above) in units of sectors.

On the other hand, although not shown, each time entry has the address information (VOBU_ADR) of the corresponding VOBU.
And time difference information (TM_DIFF). The time difference information includes the playback time specified by the time entry and V
It shows the difference from the OBU playback start time.

Now, assuming that the time interval (time unit TMU) between two consecutive time entries is 10 seconds,
This time entry interval corresponds to, for example, 600 fields in NTSC video.

Normally, the VOBU entry contains “V
Although the “OBU time interval” is represented by the number of fields, as another method, the “VOBU time interval”
"Count value by clock counter from one VOBU to the next VOBU" can also be used.

[0392] Specifically, "presentation time stamp PTS at the beginning of one VOBU"
The difference value between the PTS value at the head position of the VOBU immediately after the VOBU and the PTS value at the head position of the VOBU can represent the “time interval of the VOBU”.

In other words, “the difference value of the clock counter in a specific unit indicates the time interval in that unit”.

The time map general information TMAP_GI is
Although not shown, TM_ENT_Ns indicating the number of time entries in the corresponding time map information and VOBU_ENT_N indicating the number of VOBU entries in the corresponding time map information
s, a time offset TM_OSF for the corresponding time map information, and an address offset ADR_OFS of the corresponding time map information.

When a value (corresponding to 10 seconds) equivalent to 600 fields in NTSC video (or 500 fields in PAL video) is set as the time unit TMU, the time offset TM_OSF indicates a time lag within TMU. Used.

When the size of a VOB is represented by the number of sectors, the address offset ADR_OFS
Is used to indicate a file pointer from the beginning of the AV file.

[0397] Although not shown, the time entry TM_ENT indicates a VOBU indicating the number of the corresponding VOBU entry.
_ENTN and VOB specified by time entry
TM_DIFF indicating the time difference between the reproduction start time of U and the calculated reproduction time, and V indicating the target VOBU address
OBU_ADR.

When the time unit TMU is represented by 600 fields in NTSC (or when the time unit TMU is represented by 500 fields in PAL), the “calculated reproduction time” for the time entry #j is TMU × (j -1) It can be represented by + TM_OSF.

The VOBU_ADR is VOBU_ADR.
When the size is expressed in sector units, the corresponding VOB
Represents the target VOBU address by the total size of the preceding VOBUs.

In the data structure as exemplified above,
To start playback from a certain VOBU, the access point must be determined. This access point is a time entry point.

[0401] The time entry point is a VOBU.
Is located away from the position indicated by the movie address information by the time difference indicated by the time difference information TM_DIFF in the time entry TM_ENT. This time entry point becomes a special reproduction start point (or time search point) indicated by the time map information TMAPI.

Cell # and M_VOB in PGCI in FIG.
The time map TMAP in the I # can be linked in the same way as in the case of the S_VOGI #.

FIG. 37 shows an example in which the video field corresponding to the reproduction start time is in the middle of VOBU # k. In order to display the sequence of the video field group from the video field specified by the reproduction start time, it is necessary to input the VOBU data from the beginning to the decoder. The reason is that the decoder needs to decode all reference video fields having a playback time earlier than the playback start time, even if the decoded field is not displayed. When the decoding operation reaches the video field corresponding to the reproduction start time, the decoder starts displaying the video image.

It is not absolutely necessary to configure the apparatus (system) so that display can be started accurately from the video field corresponding to the reproduction start time, but it is desirable.

FIG. 38 shows the user-defined PGC information (FIG. 6)
FIG. 7 is a diagram for explaining a case of referring to a still image VOB group.

Each user-defined PGC has a movie VO
Refer to B or still image VOB group 2
Types of cells can be included.

FIG. 38 shows an example of a user-defined PGC referring to a still picture VOB. In this figure, a cell # 1 in a user-defined PGC is a still image VOB group # 2.
Is referred to.

[0408] Here, cell # 2 in the original PGC
By specifying the first still image VOB number and the last still image VOB number in the still image VOB group,
The entire still image VOB group # 2 is referred to. However, the cell # 1 in the user-defined PGC specifies the last still image VOB number and specifies the second still image VOB as the first still image VOB number, so that this VOB
Only the still image VOB in the group is referenced.

In FIG. 38, it is assumed that PGCI corresponds to, for example, PGC (PGCI) 1446 in FIG. In this case, cells # 1 and # 2 in the PGCI in FIG. 38 correspond to cells 1441 and 1442 in FIG. Also, RTR_STO. The first video part in the VRO file is V_PCK1 in FIG.
421 and SP_PCK1422. Further, a video part immediately following the first video part, A_PCK 1423 and DM_PC in FIG.
It corresponds to the mass of K1424.

Next, characteristic portions in each of the above embodiments will be described together.

A) One VOB or one PTT can include a plurality of pieces of still picture information.

[0412] b) At the time of recording a plurality of still images, in one VOB, at least two pieces of still image information can be continuously recorded in the empty area.

C] A plurality of continuous still picture information can be designated by the cell information (S_CI).

The effects of a) to c) are common to the embodiments.

That is, a high-performance digital camera can record thousands or tens of thousands of still images. When data is transferred to an optical disk, it is easier to process data by recording data on an optical disk by grouping a plurality of data.
Transfer time is short.

A high-performance digital camera can record thousands and tens of thousands of still images. If a VOB is configured for each still image and VOB information is created, management information becomes enormous. According to the present invention, management information can be greatly reduced.

Further, in the digital camera, since the still image information for each image is stored in a separate file, the management search is complicated. According to the present invention, management and retrieval are facilitated because a plurality of sheets are grouped.

Further, in the digital camera, since the still image information for each image is a separate file, the contents of the still image cannot be confirmed unless each file is opened. By grouping a plurality of sheets according to the present invention, FIG.
The user can check the contents as easily as seeing a positive film (or negative film) of a photograph as shown in FIG.

[0419] Further, video information over a plurality of video frames is recorded in VOB units. By recording a plurality of still picture information in units of VOB, the video information and the still picture information can be handled in the same hierarchy (the same level directory in FIG. 2). Can be mixedly displayed, for example, the video information and the still image information can be mixedly displayed, and the range of expression can be increased.

D] VOBU map (S_VOB_ENT)
#) Or presence of VOB map.

E] DVD_RTR recorder is VOBU
It has a configuration for recording a map or a VOB map.

The effects of the above d) and e) are common to the respective embodiments.

[0423] A still image desired to be viewed can be directly accessed using a VOBU map or a VOB map in which information such as a recording address for each still image is recorded, and access for displaying a plurality of still images is possible. Speed is greatly increased.

[0424] When a plurality of still images are displayed successively, seamless (the seams between the still images are continuous) by using the reproduction time information (PTM) and / or the system clock reference information (SCR). ) Display is possible.

[0425] Furthermore, the V in which the still image itself is recorded
Since the start addresses of _PCK and A_PCK in which audio information is recorded are separately described, high-speed access is facilitated when only still image information or only audio information is to be reproduced. As a result, when audio information in a specific VOB is multiply used for displaying a still image in another VOB (since only the audio information can be accessed at high speed), seamless display is possible.

F] The target specified by the cell information (S_CI) is an individual still image in the VOB.

[0427] Therefore, each still image itself can be designated at the time of reproduction, so that high-speed access can be made (using the VOBU map or VOB map), and seamless display can be performed when a plurality of still images are sequentially displayed. Become.

Also, since each still image itself can be designated at the time of reproduction, management at the time of reproduction becomes very easy.
Processing such as when a plurality of still images are displayed on the screen at one time as in 1 is simplified.

G] Cell information (S_CI) indicates different VO
The multi-designation of the still image information in B is possible.

[0430] For this reason, continuous audio information in one VOB can be used for displaying another VOB, so that the expression method has a wide range.

Further, since continuous audio information in one VOB can be used for displaying another VOB, data can be shared, and the amount of data recorded on the information storage medium (optical disc 1001) can be reduced. Can be promoted. As a result, the substantial recordable amount per information storage medium (optical disc 1001) is greatly increased.

Also, the video object information for the picture object (S_AVFIT) is newly created without processing the video object 1012 itself for the already recorded video information, and the existing video information is frozen. It can be used in combination as image information.

H] The cell information is reproduced and the VOB information (VO
The still image is reproduced using BI).

For this reason, the picture object 1013
Cell object reproduction information (S_CI) can be set independently of the video object information for picture object, which is the management information of the contents of the image data, so that the reproduction can be performed regardless of the order in which the still image is recorded on the information storage medium (optical disc 1001). You can specify the order. This greatly improves the degree of freedom of expression.

I] The present invention provides an apparatus capable of reading still picture information and audio information from a memory and reproducing both of them at the same time.

In the case where the still image information in different VOBs is multi-designated, or when only the audio information of a plurality of still images is recorded in another area at once, V_PCK, SP_PCK , A_PCK are sequentially reproduced, the access frequency becomes extremely high, and when displaying a plurality of still images sequentially, it is difficult to continuously display (due to the access waiting time of the optical head).

On the other hand, V_PCK, SP_PCK,
At least two pieces of information for one of the A_PCKs are reproduced at a time and temporarily stored in the memory 1563,
When the remaining information is displayed at the same time when the information is reproduced, the access frequency of the optical head is greatly reduced, and continuous display is facilitated.

J] The present invention provides an after-recording apparatus that collectively records additional information to a still image that has already been recorded.

For example, when still image information captured by a digital camera without an audio input function is recorded on an information storage medium (optical disk 1001) as it is, the recorded result is an audio pack A_PC as shown in FIG. 10 (c3).
The structure does not include K.

[0440] The information is reproduced, and while displaying the screen as shown in Fig. 11, commentary and comments are added to each of the "voice input by microphone" and "overwriting of the mark by handwriting".
Consider the case of adding by a method such as “adding text information by key-in”.

In this case, the recording format is changed as shown in FIG.
If it is attempted to change from 3) a structure not including A_PCK to a structure including A_PCK as shown in FIG. 10B3, a process of re-recording on the information storage medium (optical disc 1001) occurs, and the process becomes troublesome. At the same time, processing time is significantly increased. On the other hand, FIG.
If the additional information alone is recorded as a separate VOB 1634 as shown in FIG. 10D on the information storage medium (optical disc 1001) without changing the data not including the audio pack A_PCK shown in FIG. Can be added very easily and in a short time.

FIG. 39 is a view for explaining protect information for protecting a program and its storage location.

As shown in FIGS. 1D and 1E, the DVD_
Control information (RT) recorded on the RTR disc 1001
R. IFO) 1011 includes navigation data RT
R_VMG is included.

As shown in FIG. 1 (f) or FIG. 8, the navigation data RTR_VMG contains PGC information (original PGC information ORG_PGCI and user-defined PGC information).
GC information table UD_PGCIT).

As shown in FIG. 6, each PGC information (UD_
PGCI # i) includes one or more pieces of program information (PGI #
1, PGI # 2,... PGI # m).

Also, as shown in FIG.
The GC information or the user-defined PGC information (collectively referred to as PGC information PGCI) includes one or more pieces of program information (PGI # 1, PGI # 2,... PGI # m).

In the above information hierarchical structure, as shown in FIG. 39, each program information (for example, PGI
# 1) is the program type PG_TY, the number of cells C_Ns in the corresponding program PG, and the primary text information PR.
M_TXTI, item text search pointer number IT_TXT_SRPN, and thumbnail pointer information T
HM_PTRI.

[0448] The program type PG_TY of each piece of program information PGI # includes protect information (erase prohibition flag) for preventing the program from being accidentally erased.
Is described.

When the protect information flag is set to 0b, the program is not protected and is in an erasable (or overwritable) state.

On the other hand, if the protection information flag is 1b
When set to, the corresponding program is protected from erroneous erasure and the like, and becomes in an erasable (or overwritable) state. However, the reproduction of the program in which the protection information flag is set to 1b is possible.

The protect information shown in FIG. 39 can be handled as attribute information of each program (PGI #).

FIG. 40 shows a temporary erasure flag (TE) of a still image.
FIG. 3 is a diagram for explaining a storage location of the storage device.

As described above, the control information (RTR.IFO) 10 recorded on the DVD_RTR disc 1001
11 includes navigation data RTR_VMG.

As shown in FIG. 1F or FIG. 8, the navigation data RTR_VMG contains AV file information (movie AV file information table M_AVFIT and still picture AV file information table S_AVFIT).
including.

[0455] As shown in Fig. 12, the still picture AV file information table S_AVFIT contains one or more still picture VOBs.
Group information (S_VOGI # 1, S_VOGI # 2,
…)including.

In the above information hierarchical structure, as shown in FIG. 40, each still picture VOB group information (for example, S_VOGI # 1) is composed of still picture VOB group general information S_VOG_GI and one or more still picture VOB entries. (S_VOB_ENT # 1,..., S_VOB_ENT #
n).

Each still picture VOB entry (for example, S_V
OB_ENT # 1) belongs to any of types 1 to 4 in FIGS. 31 to 34, and in any case, the type S_VOB_ENT_TY of the still image VOB entry
including.

In S_VOB_ENT_TY, a map type MAP_TY indicating which of type 1 to type 4 in FIGS. 31 to 34, a temporary erasure flag TE, and the number of sub-picture streams SPST_Ns are described. ing.

When the temporary erasure flag TE is set to 0b, the corresponding VOB group is in a normal state and is in a reproducible state.

[0460] On the other hand, when the temporary erasure flag TE is set to 1b, the corresponding VOB group is excluded (or masked) from the object of reproduction, and is not reproduced (ie, skipped during reproduction even if it is not actually deleted). And it is treated as if it had been erased). However, a VOB group in which the temporary erasure flag TE is set to 1b or a program including such a VOB group, if the flag TE is reset to 0b,
It becomes playable.

The temporary erasure flag TE in FIG.
This can be handled as attribute information of a group or a program including such a VOB group.

FIG. 41 shows the protected program PG # 2
FIG. 9 is a diagram for explaining a case where a part of is reset to the erasable state and the temporary erasing state.

In the example of FIG. 41, programs PG # 1 to PG # before the protection (erasure prohibition) range is changed.
3 are arranged as follows: (1) Program PG # 1 = VOB group VOG # A consisting of still images A1, A2,... (2) Program PG # 2 = still images B1 to B162 VOB group VOG # B (protected and erase prohibited) + VOB group VO composed of still images C1 to C9
G # C (protected and erase prohibited); (3) Program PG # 3 = V composed of still images D1,.
OB group VOG # D.

[0464] In this case, the reproduction order is determined by the corresponding PGC information (PGCI), PG # 1 → PG # 2 → PG # 3.
Becomes

In the above example, the programs PG # 1 to PG # after the protection (erasure prohibition) range has been changed
5 are rearranged as follows: (1) Program PG # 1 = VOB group VOG # A including still images A1, A2,... (2a) Program PG # 2 after change = still image B1 to B1 B
80, a changed VOB group VOG # B (protected and erase prohibited); (2b) new program PG # 4 = still images B81-B
99, a new VOB group VOG # E (unprotected and erasable); (2c) new program PG # 5 = still image B100-
A new VOB group VOG # f consisting of B162
(A state in which the temporary deletion flag TE is set to 1b and the image is not reproduced) + VOB group VOG composed of still images C1 to C9
#C (a state in which the temporary erasure flag TE is set to 1b and the image is not reproduced) (3) Program PG # 3 = V composed of still images D1,.
OB group VOG # D.

[0466] In this case, the reproduction order is determined by PG # 1 → PG # 2 → PG # 4 according to the changed PGC information (PGCI).
→ PG # 3 (reproduction of PG # 5 with the temporary deletion flag TE set to 1b is skipped).

In the management information recording area (S_VOGI in FIG. 40) in which attribute information on VOG is described,
Among them, the attribute information (MAP_
TY, TE, SPST_Ns) is S_VOB_ENT
Recorded within. Temporary erasure for each still image can be set by a part of this attribute information (temporary erasure flag TE).

At the time of reproduction, the temporarily deleted still image is not displayed on the reproduction monitor screen (FIG. 11). For example, FIG.
Sports car, personal computer, and running businessman are still images C8, C9, and D1 in FIG. 41, respectively. The temporary deletion flag TE of the still image before the still image C8 and the still image after the still image D1 is 0b, and the still image C9 (the personal computer in FIG. 11).
It is assumed that the temporary erasure flag TE has been set (TE = 1b) only in this case.

In this case, the still picture A1 of PG # 1 in FIG.
When the still image reproduction is performed in order from (the screen scrolls to the left in FIG. 11), the reproduction of the still image C8 (sports car) is followed by the still image D1 (running businessman) and the still image C9 (actually, An image that has not been erased but is in a temporary erased state) does not appear on the playback screen. In this case, the user looking at the monitor of FIG.
It looks like a running businessman is located.

[0470] One or more still images recorded on the recording medium (optical disk) 1001 in FIG.
G), and still images are managed on a group basis.

[0471] All AV information recorded on the medium 1001 can be sequentially reproduced based on the original PGC information. This original PGC is composed of one or more programs.

The erasure prohibition flag (protect information in FIG. 39) can be set for each program.

All the still images included in the program for which the erasure prohibition flag is set (protect information = 1b) are in the erasure prohibition state.

[0474] To return a part of the still image in the erasure prohibited state to the erasable state, use the "VOB group (VOG)".
Resetting ”and“ program resetting ”are required.
Specific examples of the "reset VOB group (VOG)" and "reset program" will be described below.

FIG. 42 shows the protected program PG # 2
9 is a flowchart illustrating an example of a procedure for resetting a part of the state to the erasable state and the temporary erasing state. This processing can be executed by the internal MPU of the system control unit 1530 in FIG. Hereinafter, the procedure of FIG. 42 will be described with reference to FIG.

First, the V composed of the still images B1 to B162
A program PG # 2 is composed of OG # B and VOG # C composed of still images C1 to C9.
It is assumed that G # 2 is protected (erasure prohibited).

The protection state and the temporary erasure state of such a program PG # 2 can be changed by the procedure exemplified below.

That is, in FIG. 42, first, VOG
The range of the still image included in #B is redefined as B1 to B80 (step ST100).

Next, it is reset that the VOB group included in PG # 2 is only VOG # B (step ST1).
02).

Next, the range of still images B81 to B99 is newly grouped to be VOG # E (step ST10).
4).

Next, a new program PG # 4 composed of only VOG # E is defined (step ST10).
6). At this time, the temporary erasure flag TE is not set for the new PG # 4, and the VOG #E is erasable (of course, reproduction is also possible).

Next, the range of still images B100 to B162 is newly grouped to VOG # F (step ST).
108).

Next, VOG # F and VOG # C are put together and a new program PG # 5 is defined (step S
T110).

Finally, a temporary erase flag T is set for PG # 5.
E is set (step ST112), and the process in FIG. 42 ends.

Before the processing in FIG. 42 was performed, the program PG # 2 in FIG. 41 was in a state where all of the still images B1 to B162 were not erased (playback was possible).

On the other hand, in the program PG # 2 of FIG. 41 after the processing of FIG. 42 is performed, only the still images B1 to B80 which are not erased (can be reproduced) remain, and the remaining still images B81 to B162 Has been changed to a state where it can be deleted (and can be reproduced) as necessary.

Further, FIG. 4 after the processing of FIG. 42 is performed.
In the first program PG # 2, the still images B100 to B16
2 and C1 to C9 are in a temporary erasure state (a state in which reproduction is not performed and main erasure is possible because they are not protected).

Here, the points in the above-described embodiment will be summarized: <01> 1VOB = a plurality of pieces of still picture information or 1PTT
<02> 1VOB = at the time of recording a plurality of still images, continuously record at least two pieces of still image information in a free area of the recording medium; <03> cell information (FIG. 23 or A plurality of continuous still image information can be specified by (S_CI) in FIG. 24><04> Existence of VOBU map or VOB map; <05> Object specified by cell information (S_CI) is V
Individual still images in OB; ・ Since each still image itself can be specified during playback, (V
Access can be performed at high speed (using an OBU map or VOB map), and seamless display (such as a slide show with a smooth flow) can be performed when a plurality of still images are sequentially displayed.

Since each still image itself can be designated at the time of reproduction, management at the time of reproduction becomes very easy, and processing such as displaying a plurality of still images at once on the screen as shown in FIG. Become.

<06> V different in cell information (S_CI)
Multi-designation of still image information in OB is possible; ・ Continuous audio information in one VOB can be used at the time of displaying another VOB.

Since continuous audio information in one VOB can be used when displaying another VOB, data can be shared and the amount of data to be recorded on the information storage medium (optical disc 1001) can be reduced. As a result, the amount of data that can be recorded on one information storage medium increases substantially in a substantial sense.

[0492] By simply creating new video object information for a corresponding picture object without processing the video object 1012 itself for already recorded video information, the existing video information is combined as still image information. You can use it.

<07> The cell information (S_CI) is reproduced,
Playing a still image by using VOBI; Picture object cell playback information can be set independently of picture object video object information which is management information of the contents of the picture object 1013. Therefore, the information storage medium (optical disc 100)
Since the reproduction order can be specified regardless of the recording order of the still images in 1), the degree of freedom of expression is dramatically improved.

<08> Apparatus for reading still picture information and audio information in memory and playing back both at the same time> Multi-designation of different VOB still picture information,
When only the audio information of a plurality of still images is collectively recorded in another area, the V_PC
When K, SP_PCK, and A_PCK are sequentially reproduced, the access frequency becomes extremely high. When displaying a plurality of still images sequentially, the continuous display is performed (affected by the access waiting time of an optical head not shown). It becomes difficult.

On the other hand, V_PCK, SP_PCK,
If at least two pieces of information are reproduced at a time for one of the A_PCKs, temporarily stored in the memory 1563 of FIG. 19, and displayed at the same time as the remaining information is reproduced, the access frequency of the optical head is greatly reduced. In addition, continuous display is facilitated.

<09> An after-recording device that collectively records additional information to a recorded still image; • For example, a still image information captured by a digital camera without an audio input function is directly stored in an information storage medium (optical disc 1).
001), the recording result has a structure that does not include the audio pack (A_PCK).

[0497] The information is reproduced, and while displaying the screen as shown in Fig. 11, commentary and comments are added to each still image as "voice input by microphone", "overwriting of handwritten mark", "text by key-in". Consider the case where information is added by a method such as "addition of information". In this case, if an attempt is made to change the recording format from a structure that does not include A_PCK to a structure that includes A_PCK, a process of re-recording on the information storage medium occurs, which makes the process cumbersome and takes much time. Would.

On the other hand, if only the additional information is recorded as a separate VOB on the information storage medium without altering the data not including the A_PCK, the subsequent information adding process for the still image is very simple and easy. Can be done in a short time.

[0499]

As described above, according to the management system of the present invention, (1) since a data structure similar to a DVD video can be adopted, a certain degree of compatibility and continuity with a DVD video can be secured; 2) Since a similar data structure can be adopted between a moving image and a still image, consistency or continuity of a recording format and management information can be ensured; (3) Protection and provision of digital information handling a plurality of pieces of still image information Can manage erasure.

[Brief description of the drawings]

FIG. 1 is a view for explaining a data structure of an information recording medium according to an embodiment of the present invention;

FIG. 2 is a view for explaining a directory structure of a data file stored in a data area of the medium in FIG. 1;

FIG. 3 is a view for explaining a data structure in the AV file of FIG. 2;

FIG. 4 is a video object VO of AV file data.
Array when B is recorded on the medium in FIG. 1 (recording location)
Diagram illustrating an example of

FIG. 5 is a view for explaining a data structure in an allocation map table;

FIG. 6 is a view for explaining a data structure in program chain control information (for example, a user-defined PGC information table UD_PGCIT);

FIG. 7 is a view for explaining a reproduction example of video information (cell information) based on a program chain PGC;

FIG. 8 shows management information (video title set information VTSI).
Or a diagram for explaining a data structure of management information RTR_VMGI for real-time video recording;

FIG. 9 shows video object information (M_VOB for a moving image)
FIG. 1 illustrates an arrangement order of video objects VOB according to I or S_VOGI for a still image;

FIG. 10 is a view for explaining a recording format of a picture object / audio object for a still image;

11 is a diagram showing a screen display example of picture object data (still image) reproduced from the medium of FIG. 1;

12 is a still picture AV file (S_AVFI) shown in FIG. 8;
A diagram for explaining a data structure of information on a video object in T);

13 shows a data structure of a video object unit VOBU in a picture object (S_VOGI in FIG. 9)
Diagram for explaining the data structure related to

FIG. 14 shows V when still images are continuously arranged.
Diagram for explaining the relationship between the data structure in the OB and the specified contents of the cell corresponding thereto;

15 is a diagram illustrating a data structure of cell reproduction information (still image cell information S_CI) of a picture object, and a correspondence relationship between the contents of the cell reproduction information and the elements shown in FIG. 14;

FIG. 16 is a diagram illustrating another data structure of cell reproduction information (cell information CI) of a picture object;

FIG. 17 is AV file information for a still image (S_AVFI).
For explaining the data structure of part-of-title (chapter) information related to a still image in FIG.

18 is a diagram illustrating a V of the picture object shown in FIG.
A diagram for explaining the data structure of the OB map;

19 is a block diagram showing a configuration example of a digital video recording / playback apparatus (RTR video recorder) using the medium of FIG. 1 (DVD_RTR disc capable of real-time video recording / playback);

FIG. 20 is a flowchart illustrating a procedure for recording one or more still images on the medium of FIG. 1;

FIG. 21 is a flowchart illustrating a procedure for reproducing one or more still images from the medium of FIG. 1;

FIG. 22 is a flowchart for explaining a procedure for after-recording audio information on the medium of FIG. 1;

FIG. 23 is a view for explaining a data structure of control information / navigation data (RTR_VMG) shown in FIG. 1 or 8;

24 is a view for explaining the contents of the still picture cell information (S_CI) in FIG. 23;

25 is a diagram showing still image cell general information (S_C_G) shown in FIG.
Diagram explaining the contents of I);

26 is a view for explaining the contents of each still picture cell entry point information (S_C_EPI) in FIG. 24;

27 is a view for explaining the contents of the still image additional audio file information (S_AAFI) in FIG. 12;

28 is a diagram showing general information (S_AAG) of S_AAG in FIG. 27;
_GI);

FIG. 29 shows an additional audio entry (AA_E) shown in FIG.
Diagram explaining the contents of NT);

30 is a view for explaining the contents of the still image VOB group general information (S_VOG_GI) in FIG. 12;

31 is a VOB entry for still image (S_VO) shown in FIG. 12;
A diagram for explaining a first example (type 1) of the content of (B_ENT);

FIG. 32 is a still image VOB entry (S_VO) shown in FIG. 12;
A diagram for explaining a second example (type 2) of the content of (B_ENT);

FIG. 33 is a still image VOB entry (S_VO) shown in FIG. 12;
A diagram for explaining a third example (type 3) of the content of (B_ENT);

FIG. 34 is a still image VOB entry (S_VO) shown in FIG. 12;
A diagram for explaining a fourth example (type 4) of the content of (B_ENT);

FIG. 35 shows original PGC information (ORG_PGC in FIG. 8 or FIG. 23) when only a still image VOB is recorded.
I) and a still image video file (RTR_STO.
Diagram illustrating the relationship with VRO);

FIG. 36: Original PGC information (ORG_PGCI)
And the additional audio part of the still image (RTR_ST in FIG. 2)
A. Diagram illustrating the relationship with VRO);

FIG. 37 is a view for explaining the relationship between still image VOBs and movie VOBs and original PGC information;

FIG. 38: User-defined PGC information (FIG. 6) is a still image VO
Diagram explaining the case of referring to group B;

FIG. 39 is a view for explaining protection information for protecting a program and its storage location;

FIG. 40 is a view for explaining a temporary erasure flag (TE) of a still image and its storage location;

FIG. 41 is a view for explaining a case where a part of the protected program PG # 2 is reset to the erasable state and the temporary erasing state;

FIG. 42 is a flowchart illustrating an example of a procedure for resetting a part of the protected program PG # 2 to the erasable state and the temporary erasure state.

[Explanation of symbols]

1001 rewritable optical disk (DVD_RTR disk); 1009 audio / video data area (AV data area); 1011 control information (RTR.IFO); 1012 video object (VOB or RTR_)
MOV. VRO); 1013 ... Picture object (RTR_STO.V)
RO); 1014... Audio object (RTR_STA.
1101 AV data control information (RTR_VMG); 1021 playback control information (RTR_VMG); 1105 allocation map table; 1106 video title set information (VTSI or RTR_VMGI); 1107 video object information (M_AVFIT or S_AVFIT) 1103: PGC control information (ORG_PGCI or U
1108 Cell reproduction information (M_CI or S_CI); 1500 Disk changer unit (disk drive unit); 1530 System control unit; 1550 Encoder unit; 1560 Decoder unit 101 Information recording / reproducing unit.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/85 H04N 5/85 Z 5D110 5/91 5/91 J G11B 27/00 DF term (reference) 5B017 AA02 BA04 BB03 BB05 CA09 CA15 CA16 5C052 AA02 AA03 AC08 CC11 DD04 DD10 GA02 GA04 GB06 GC00 5C053 FA07 FA08 FA14 FA24 FA25 FA30 GB11 GB36 GB37 GB38 GB40 JA07 JA21 KA04 KA05 KA24 KA25 LA07 5D044DE08 BC06 DA06 DA08 5D110 AA17 DA11 DA12 DA13 DB03 DC05 DD16

Claims (7)

[Claims] 1. A rewritable information storage medium capable of recording predetermined control information and still image data, wherein the information storage medium is capable of recording one or more programs including one or more still images. A rewritable information storage medium, wherein in the control information, protect information for prohibiting erasure of the program is stored in units of the program. 2. A rewritable information storage medium capable of recording predetermined control information and still image data, wherein said information storage medium includes at least one program including a group of video objects composed of one or more still images. Can be recorded, and temporary deletion information for setting the video object group to the temporary deletion state in units including the video object group is stored in the predetermined control information. Exchangeable information storage medium. 3. A rewritable information storage medium having a first recording area in which predetermined control information can be recorded and a second recording area in which still image data can be recorded, wherein the first recording area and the second recording area are recorded. A rewritable information storage medium characterized in that an unrecorded area can be set in at least one of the recording areas. 4. The medium according to claim 3, further comprising management information on an unrecorded area existing in the first recording area and the second recording area. 5. A method using a rewritable information storage medium on which one or more programs including predetermined control information and one or more still images are recorded, wherein the predetermined control information includes, in units of the program, A protection information management method, wherein rewritable protection information for inhibiting erasure of the program is written. 6. A method using a rewritable information storage medium on which predetermined control information and one or more programs including a video object group composed of one or more still images are recorded. Wherein the rewritable temporary erasure information for setting the video object group to the temporary erasure state is written in units including the video object group. 7. A rewritable information storage medium on which one or more programs including predetermined control information and a group of video objects composed of one or more still images are recorded, wherein a plurality of still images are stored. When a predetermined program including an image is in the erasure prohibition state, and the erasure prohibition state of the predetermined program is changed, a combination of still images constituting the video object group is rearranged, and A program number is newly assigned to each of the groups of video objects described above.