JP3383659B2 - Optical disc, reproducing method and recording method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to video information and still images.
Optical disc on which images can be recorded and reproduction of this optical disc
Method and recording method .

[0002]

2. Description of the Related Art Recently, digital cameras have been frequently used as a medium for recording still image information as digital information. Further, even on a DVD for recording and reproducing video information as digital information, menu images and the like are displayed as still images.

Here, the image taken by the digital camera 1
Each still image is stored as a separate file. When the still image information for each image is divided and stored in individual files in this way, the following problems remain.

A] Since the contents of similar still images or still images taken at the same time are not grouped, management and retrieval of individual still images becomes complicated.

B] As one of the concrete contents of the complexity of still image management, it is necessary to open the file separately to confirm the individual still image information contents, and it takes a lot of time to confirm the contents.

C] If a plurality of still image information are to be handled in a DVD disc capable of recording and reproducing, which has a certain compatibility and continuity with the DVD Video disc, the DVD
The compatibility and continuity with the Video disc cannot be maintained.

Therefore, the present invention has the following objects.

A) Improvement of recording format when still image information is recorded on an information storage medium.

B) Improvement concerning the data structure of management information for still image information recorded on an information storage medium.

C) Improvement on an information recording / reproducing apparatus for recording still image information and its management information on an information storage medium.

[0011]

An optical disc according to the present invention includes a first recording area in which video information can be recorded, a second recording area in which still images can be recorded, and management relating to the video information and the still images. It is possible to have a third recording area for recording information, wherein the video information stored in the first recording area and the plurality of still images recorded in the second recording area are video. A cell that is recordable in units of objects and that specifies a reproduction range of video information stored in the first recording area or a plurality of still images recorded in the second recording area, and a reproduction procedure by the cell Is defined, PGC information regarding the PGC and information regarding the cell are recorded in the third recording area, and reproduction start and end in the cell are included in the information regarding the cell. A still image number for identifying the still image is recorded, and a plurality of PGCs can be set in the third recording area, and cells in the different PGCs include an arbitrary section including the same location in the VOB. Can be specified, and the video object of the video information and the video object of the still image can be mixed for sequence reproduction, and the cell can be the cell related to the video information in the first recording area or the second recording area. The identification information indicating whether the cell is for the still image in. In the reproducing method of the present invention, a first recording area in which video information can be recorded, a second recording area in which a still image can be recorded, and a third recording in which management information about the video information and the still image is recorded. And a plurality of still images recorded in the second recording area are recorded in the first recording area. A cell that can be recorded in units and specifies a reproduction range of video information stored in the first recording area or a plurality of still images recorded in the second recording area, and a reproduction procedure by the cell are shown. PGC is defined, PGC information regarding the PGC and information regarding the cell are recorded in the third recording area,
In the information about the cell, a still image number that identifies the still image at the start and end of reproduction in the cell is recorded, and further, a plurality of PGCs can be set in the third recording area. A cell in the PGC can specify an arbitrary section including the same portion in the VOB, and a video object of video information and a video object of a still image can be mixed for sequence reproduction, and the cell is the first cell. Of the video information in the recording area or the cell related to the still image in the second recording area, and reproduces the video information or the still image from the optical disc. In the recording method of the present invention, a first recording area in which video information can be recorded, a second recording area in which a still image can be recorded, and a third recording in which management information about the video information and the still image is recorded. And a plurality of still images recorded in the second recording area are video information recorded in the first recording area. A cell that is recordable in units of objects and that specifies a reproduction range of video information stored in the first recording area or a plurality of still images recorded in the second recording area, and a reproduction procedure by the cell Is defined, and P related to the PGC is stored in the third recording area.
The GC information and the information regarding the cell are recorded, and the still image number that identifies the still image at the beginning and end of reproduction in the cell is recorded in the information regarding the cell, and further, in the third recording area. , Multiple PGCs can be set,
The cells in the different PGCs can specify an arbitrary section including the same location in the VOB, and the video object of the video information and the video object of the still image can be mixed and sequence-played back. The first
Identification information indicating whether the cell is for video information in the recording area or the cell for still images in the second recording area is recorded in the third recording area.

[0012]

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

[1] Schematic Structure of Data on Information Storage Medium Information recorded on the information storage medium (Optical Disk 1001) capable of recording and reproducing video information and music information shown in FIG. The structure) will be described below.

FIG. 1 shows a schematic data structure of information recorded on an information storage medium (Optical Disk 1001).
As shown in (b), from the inner side (Inner Side 1006) in order: ・ Embossed data Zone (embossed zone) with a light-reflecting surface having an uneven shape and Mirror Zone with a flat surface (mirror surface)
Rewritable (mirror zone) and rewritable information
Lead-in A with data zone (rewritable zone)
rea1002.

Recording / rewriting by the user is possible
Recorded in Rewritable data Zone, Audio & Video Da
Volume & File Manager Information that records information about ta files or the entire volume 1
003.

A Data Area 1004 composed of a Rewritable data Zone that can be recorded and rewritten by the user.

Rewritable d that allows rewriting of information
Lead-out Area 1005 composed of ata Zone. It is divided into

Embossed data of Lead-in Area 1002
In the Zone, information about the entire information storage medium such as a disc type such as DVD-ROM / -RAM / -R, disc size, recording density, and a physical sector number indicating a recording start / recording end position. Information about recording / reproducing / erasing characteristics such as recording power and recording pulse width, erasing power, reproducing power, and linear velocity during recording / erasing. -Rewritable data Zone of Lead-in Area 1002 is recorded in advance with information related to manufacturing of one information storage medium such as manufacturing number.
And the Rewritable data Zone of the Lead-out Area 1005 are respectively: a unique disk name recording area for each information storage medium, a test recording area (for confirming the recording erasing condition), Da
A management information recording area for the defective area in the ta area 1004 is provided, and recording can be performed in the area by the information recording / reproducing apparatus.

Lead-in Area 1002 and Lead-out Area 1
The data area 1004 sandwiched between 005 is shown in FIG.
As shown in (c), mixed recording of Computer Data and Audio & Video Data is possible. Computer Dat
The recording order of a and Audio & Video Data and the size of each recording information are arbitrary, and the location where Computer Data is recorded is set to Compu
ter Data Area 1008, 1010, Audio & Vi
The area where deo Data is recorded is the Audio & Video Data Area
Name it 1009.

The data structure of the information recorded in the Audio & Video Data Area 1009 is as shown in FIG.
chor Pointer for Control Information 1015: Audio & Video Da
Located at the first position in ta Area 1009, Audio & V
Information indicating the head position (head address) where Control Information (control information) 1011 in the video data area 1009 is recorded.

Control Information 1011: Control information required when performing recording (recording), reproduction, editing, and search processing.

Video Objects 1012: Video Data
Recording information of Contents.

Picture Objects 1013: Still image information such as Still images and Slide images.

Audio Objects 1014: Recording information of Audio Data contents.

Thumbnail Objects 1016: Thumbnail objects used when searching for a desired location in Video Data or when editing.
bnail) and other information. Etc.

Video Objects 1012, Pic of FIG. 1 (d)
ture Objects 1013, Audio Objects 1014, Thumb
Nail Objects 1016 means a collection (group) of information classified according to content contents (data contents). Therefore, all video information recorded in the Audio & Video Data Area 1009 is included in Video Objects 1012, all still image information is included in Picture Objects 1013, and all audio / audio information is included in Audio Objects 10.
All thumbnail information included in No. 14 and used for managing / retrieving video information is included in Thumbnail Objects 1016.

The VOB (Video Object) 14 shown in FIG.
Reference numeral 03 denotes a block (collection) of information recorded in the AV File (A / V file, that is, audio / video file) 1401, which is the Video Object of FIG.
It has a different definition from s1012. Note that although the terms are similar, they are used in different meanings.

Further, the contents of the Control Information 1011 are: AV Data Control Information 1101: Managing the data structure in the Video Object 1012, and the Optical Disk 1 which is an information storage medium.
Management information of information regarding the recording position on 001. Playback Control Information 1021: Control information necessary for reproduction.

Recording Control Information 1022: Recording (Recording / Recording)
Control information sometimes needed.・ Edit Control Information
1023: Control information necessary for editing. -Thumbnail Control Information (thumbnail control information) 1024: management information about a thumbnail (Thumbnail Object) for searching or editing a desired place in Video Data.

The AV Data Co shown in FIG.
The data structure in the ntrol Information 1101 is: Allocation Map Table 1105: Information Storage Medium (Optical Disk 100)
1) Information on address setting according to the actual arrangement above, identification of recorded and unrecorded areas, and the like. Video Title Set Information 1106: AV File 140 as shown in FIG.
1 shows the overall information content in 1 and includes connection information between VOBs, grouping information of multiple VOBs for management / retrieval, and time information such as Time Map Table. Video Object Information 1107: AV File 14 as shown in FIG.
01 indicates information about each VOB in each, and attribute (characteristic) information for each VOB and each VOBU included in the VOB.
Information about. -PGC Control Information (program chain control information) 1103: Information regarding a video information reproduction program (sequence). -Cell Playback Information 110
8: Information on the data structure of the basic unit of video information during reproduction. It consists of

The outline of FIGS. 1F to 1F is as described above, but a little supplementary explanation will be given below for individual information.

Volume & File Manager Information 1003 includes:
e Information about the whole. -Number of PC data files and number of AV data files included. -Recording layer information. Information related to etc. is recorded.

In particular, as recording layer information, the number of constituent layers (for example, one RAM / ROM two-layer disc is counted as two layers, one ROM two-layer disc is counted as two layers, and n single-sided discs are counted as n layers). -A logical sector number range table allocated for each layer (capacity for each layer).・ Characteristics of each layer (eg DVD-RAM disc,
RAM / ROM RAM part of dual-layer disc, CD-RO
M, CD-R, etc.). A logical sector number range table allocated in Zone units in the RAM area for each layer (including rewritable area capacity information for each layer). -Unique ID information for each layer (... to discover disk exchange in multiple disk pack) is recorded, and continuous logical sector numbers are set for multiple disk packs and RAM / ROM dual layer disks. One big
It can be handled as a Volume space.

Playback Control Information 1021 is information about a playback sequence in which PGCs are integrated. -In relation to the above, information indicating a pseudo recording position where the information storage medium is regarded as one tape like a VTR or DVC (a sequence in which all recorded cells are continuously reproduced). -Information about simultaneous playback of multiple screens with different video information.

Search information: Information that records a cell ID corresponding to each search category and a start time table in the cell and enables the user to directly access the corresponding video information by selecting a category.

Etc. are recorded.

Recording Control Information 10
In 22: Program reservation recording information and the like are recorded. Edit C
In the ontrol Information 1023: -Special editing information for each PGC (... The relevant time setting information and special editing contents are described as EDL information). -File conversion information (... Converts a specific part in an AV file to a file that can be specially edited on a PC, such as an AVI file, and specifies the storage location of the converted file).

In addition, Thumbnail Control Information 10
24. ・ Management information about Thumbnail Objects 1016 (...
A recording location of each thumbnail image in the Audio & Video Data Area 1009 and the V related to each thumbnail image
OB or Cell designation information, VOB or Cell location information related to each thumbnail image (VO
B and Cell will be described in detail at the content explanation place in FIG. 3).

Directory Structure of Data Files in Data Area All information recorded in the Data Area 1004 of FIG. 1B is recorded in file units, and the relationship between each data file is managed by the directory structure as shown in FIG. Has been done.

Below the root directory 1450, a plurality of sub-directories 1451 are provided for easy classification of recorded file contents. In the embodiment of FIG. 2, the Computer Data Area 1008, 10 of FIG.
Each data file related to Computer Data recorded in 10 is a subdirectory 145 for storing Computer Data.
Recorded under 7, Audio & Video Data Area 1009
The Audio & Video Data recorded in No. 2 is recorded under the rewritable video title set RWV_TS1452. When the video information recorded on the DVD Video disc is copied to FIG. 1A, it is copied under the video title set VIDEO_TS1455 and the audio title set AUDIO_TS1456.

Control Information 101 in FIG. 1 (d)
One piece of information is recorded as one file as recording / playback video management data. In the example of FIG. 2, the file name is
It is named RWVIDEO_CONTROL.IFO. Further, the same information is recorded for backup as a file name RWVIDEO_CONTROL.BUP.

In the embodiment shown in FIG. 2, the Video Obje shown in FIG.
cts 1012, Picture Objects 1013, Audio Objects 1
014, Thumbnail Objects 1016 all AV File 14
01 (the file name in the embodiment of FIG. 2 is RWOBJECT.OB) is collectively recorded in one file.

Although not shown in FIG. 1, recording / reproduction additional information 1454 that can be used at the time of recording / reproducing an image can be simultaneously recorded, and the information is collectively recorded as one file. In the example, the file name is RWADD.DAT.

Data Structure in AV File FIG. 3 shows a data structure in the AV File. Figure 3
As shown in (b), one VTS (Video Title Set) 1 in the entire AVFile 1401.
It constitutes 402. Inside the VTS1402 is Audio &
A plurality of VOBs (Vide) separated according to the order of the content of VideoData and the information recorded in the AV File 1401.
o Object; video object) 1403, 1404,
It consists of a group of 1405.

VOBs 1403, 1404 shown in FIG.
1405 is Audio recorded in the AV File 1401.
Defined as a group of & Video Data, video information /
Video objects with strong classification item colors such as still image information / audio information / thumbnail information shown in FIG. 1 (d)
It has different definition contents from s1012. Therefore, FIG.
Vi in VOBs 1403, 1404, and 1405 of (d)
Not only the information classified in deo Objects 1012 is recorded, but also Picture Objects 1 as shown in FIG.
013, Audio Objects 1014, Thumbnail Objects 1
Information classified into 016 is also recorded.

Based on the information contents (contents) recorded in each VOB 1403, 1404, 1405, grouping is performed for each VOB having a relationship, and PT is performed for each group.
T (Part_of_Title) 1407,
Collected as 1408. That is, PTT140
7, 1408 are configured as an aggregate of one or a plurality of VOBs. In the embodiment of FIG. 3C, VOB 1404
And VOB 1405 form a PTT 1408, and PTT 1407 consists of only one VOB.

The minimum basic unit of video information is VOBU (Vide
o Object Unit) 141
1 to 1414, and the data in the VOBs 1403 to 1405 are VOBU1411 as shown in FIG. 3 (e).
~ 1414 aggregated. VOB1012
MPEG1 or MPEG2 for video information compression technology in
Are often used. In MPEG, video information is divided into groups called GOPs at intervals of about 0.5 seconds,
Video information is compressed in units of GOP. This G
VOBU (Vi
video information compression units 1411 to 1414 are formed.

Further, each of the VOBUs 1411 to 1414 is a Sector (sector) 14 of 2048 Bytes unit.
It is divided and recorded every 31 to 1437. Each Sector 1
431 to 1437 are recorded in the format of a Pack structure, and raw video information, sub-picture information, audio information, and dummy information are recorded for each Pack in V_PCK (Video Pac).
k) 1421, 1425, 1426, 1427, SP_PC
K (Sub-picture Pack) 1422, A_
PCK (Audio Pack) 1423, D
It is recorded in the form of M_PCK (Dummy Pack) 1424. 14Bytes Pack at the beginning of each Pack
Since it has a Header (pack header), the amount of information recorded in each Pack is 2034 bytes.

DM_PCK (Dummy Pack) 142
4 is for post-addition of postscript information after recording ...
It is inserted in advance for the purpose of use such as exchanging with the Dummy Pack by inserting the memo information in the ck and exchanging it with the Dummy Pack into the sub-picture information (in the Sub-picture Pack).

The information storage medium (Optica shown in FIG. 1A)
A recording area of a DVD-RAM disk, which is an example of the Disk 1001), is divided into a plurality of sectors. A data amount of 2048 Bytes can be recorded per sector. In this DVD-RAM disc, recording / reproduction is performed in sector (2048 Bytes) units. Therefore, as an information storage medium (Optical Disk 1001), a DVD-
When a RAM disk is used, each Pack is recorded in Sector 1431 to 1437 units as shown in FIG.

As shown in FIGS. 3B and 3D, AVFi
A VTS (Video Title Set) 1402 is configured by a series of connections of all VOBs 1403 to 1405 in the le 1401. On the other hand, Playback Control Informati
In the reproduction procedure described in on (pack control information) 1021, it is possible to specify an arbitrary range within an arbitrary VOB and to reproduce in an arbitrary reproduction order. The basic unit of video information during playback is Cell 1441, 144
2, 1443. Cell 1441, 1442,
Although 1443 can specify an arbitrary range within an arbitrary VOB, it cannot specify a range across VOBs (a single cell cannot connect a plurality of VOBs to set a range).

In the embodiment shown in FIG. 3 (g), Cell 14 is used.
41 designates one VOBU 1412 in the VOB 1403, Cell 1442 designates one VOB 1404 as a whole, and Cell 1443 designates the range of only a specific pack (V_PCK1427) in the VOBU 1414.

Information indicating a video information reproduction sequence is set by a PGC (Program Chain) 1446, and this reproduction sequence is described by one cell designation or connection information of a plurality of cells. For example, in the embodiment of FIG. 3 (h), PGC (Program Chain) 144
6 constitutes a playback program as a connection of Cell 1441, Cell 1442, and Cell 1443 (Cell
The detailed description of the relationship between PGC and PGC will be given later).

Allocation Map Table Contents As described above, the recording area of the DVD-RAM disc is divided into a plurality of sectors, and sector numbers (LSN: Logical Sector Nu) are consecutively arranged in ascending order from the inner circumference side.
mber) is attached.

Now, an information storage medium (Optical Disk 100)
Consider a case where video information is recorded in the Data Area 1004 of 1) by the following procedure.

1. Information storage medium (Optical Disk 100
Sector number (L in Data Area 1004 in 1)
SN) AVF in the continuous area (a <g) from a + 1 to g
ile1401 Secure recording area.

2. Data of VOB # 1 1461 is recorded in a continuous area (b <c) from sector number (LSN) b + 1 to c in the AVFile 1401 recording area.

3. Data of VOB # 2 1462 is recorded in a continuous area (d <e) from sector number (LSN) d + 1 to e in the AVFile 1401 recording area.

The above 1. To 3. Results of processing up to AV
In the File 1401, three unrecorded areas of "a + 1 to b", "c + 1 to d", and "e + 1 to g" in sector number (LSN) remain. Next, when video information of VOB # 3 having a large data size is recorded in this unrecorded area, 4. The data of VOB # 3 is divided into a plurality of pieces according to the size of the unrecorded area in the AVFile 1401 recording area.

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

6. The data next to the divided VOB # 3 is recorded in the continuous area (c <d) from sector number (LSN) c + 1 to d.

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

As a result, an unrecorded area 1460 having a sector number (LSN) of “e + 1 to f” remains in the AVFile 1401.

The above process is required. 1. To 7. FIG. 4 shows the physical recording position distribution of each VOB in the AVFile 1401 obtained as a result of the processing up to.

As can be seen from the above description, AVFile
Data in 1401 can be partially erased, or AVFile
When additional recording of new data is repeated in the unrecorded area in 1401, VOB # 3 1463, 1464, 146
As in the example of 5, it is necessary to record one VOB data in a plurality of locations in a distributed manner.

Thus, the same AV File 1401
Allocat shown in Fig. 1 (f) is the information showing the physical recording position distribution of each VOB of each data recorded in the disk.
It is ionMapTable1105. FIG. 5 shows the information contents of the Allocation Map Table 1105 when the data arrangement of FIG. 4 is used as a specific example. The Allocation Map Table 1105 includes position distribution information 1621 of unrecorded areas and data recording position distribution information 1622, 1623, 1624 for each VOB.

A block in which a continuous sector number connection is secured in each VOB is defined as "Extent". In the embodiment of FIG. 4, the VOB # 3 data is recorded in three groups. In the above example, since the sector numbers (Logical Sector Numbers) a + 1 to b have a continuous sector number connection, this area constitutes “Extent # γ 1473”. That is, V
The position distribution where OB # 3 data is recorded is Extent
# Γ1473, Extent # δ1474, Extent # ε147
You will have 3 places of 5.

Allocation Map Table 110 shown in FIG.
The number of Extents 1601, 1602, 1603, 1 is first included in the position distribution information regarding the unrecorded area in 5 and each VOB.
604 is recorded. After that, the head address 1606, 1607, 1608, 1609, 16 for each Extent
10, 1611 and its Extent size 1614, 161
5, 1616, 1617, 1618, 1619 are recorded. The start address is represented by a “difference number” from the start sector number (Logical Sector Number) of the AVFile 1401. When the difference numbers are expressed in this way, when the entire contents of the AVFile 1401 are ported to another information storage medium, the information change in the Allocation Map Table 1105 is unnecessary and the portability of the file is improved. Further, as shown in FIG. 5, the extent size is expressed by the number of sectors. Instead of expressing the Extent size as shown in Fig. 5, Ex
It can also be expressed by the final address of the tent.

In the DVD-RAM disk standard, information indicating a physical address on an information storage medium (Optical Disk 1001) is a physical sector number (PSN: Physical Sector).
Number), the entire address handled by the file system is the logical sector number (LSN).
r), the address defined on the file system in the DataArea 1004 of FIG.
N: Logical Block Number) for distinction.
However, if the description method is faithfully followed, the description content becomes complicated. Therefore, in FIGS. 4 and 5, importance is placed on ease of understanding, and a logical sector number (LSN) is set.
It is explained with the expression.

[5] Playback Control Information 10
21 Contents The contents of Playback Control Information 1021 will be described with reference to FIGS. 6 and 7. Playback Control Informa
PGC (Program Chain) Control In in tion 1021
The formation 1103 has the data structure shown in FIG. 6, and the playback order is determined by PGC and Cell. PGC is
Indicates the unit for executing a series of playbacks that specifies the playback order of the Cell. Cell indicates a reproduction section in which reproduction data in each VOB is designated by a start address and an end address as shown in FIG.

PGC Control Information 1103 is the PGC
Information Management Information 1052, one or more Search Pointer of PGC I
nformation (search pointer of PGC information) 1053,
1054 and PGC Information 1055, 1056, 1
057.

PGC Information Management Information
In 1052, information indicating the number of PGCs (Number of PGC Inf
ormation) is included. Search Pointer of PGC Inform
The ations 1053 and 1054 point to the beginning of each PGC Information to facilitate the search. PGC Info
rmation1055, 1056, 1057 are PGCGenera
Information 1061 and one or more Cell Playback I
nformation 1062, 1063. PGC General
Information 1061 includes information (Number of Cell Playback Information) indicating the PGC playback time and the number of cells.

As shown in FIG. 7, the playback data is set to Cell and Cell
It is specified in the playback section from -A to Cell-F, and PGC Information is defined in each PGC.

1. PGC # 1 shows an example that consists of cells that specify continuous playback sections, and the playback order is Cell-A
→ Cell-B → Cell-C.

2. PGC # 2 shows an example that consists of cells that specify intermittent playback intervals, and the playback order is Cell
-D → Cell-E → Cell-F.

3. PGC # 3 shows an example in which playback is possible irrespective of playback direction or duplicate playback, and the playback order is Cell-E → Cell-A → Cell-D → Cell-B → Cell-E.
Becomes

[6] Video Title Set Information 1
106 Content Video Title Set Information 1106 has a data structure as shown in FIG.
… Information about the general content items of the Video Title Set.

Video Object Sequence Information
1752 ... In the data structure of FIG. 3, Video Title S
A serial order is set for all VOBs in et 1402 (= AV File). The order information of each VOB according to this sequence is described here.

Part_of_Titles Information 1753
... Each Obje recorded in the AV File 1401
The cts data is grouped by related data for the purpose of data management and retrieval, and a video title name is set for each group. Above group (Part_of
_Title) is composed of an aggregate of VOBs. This Part
VOB information included in each _of_Title is described here.

・ Video Title Set Time Map Table 17
54… Video Objects in Video Title Set 1402
1012 and Audio Objects 1014
VOBU position information for each specific time interval according to the Video Object Sequence for VOB. Is recorded.

Video Object Sequence Information 17
As a concrete data structure in 52, as shown on the right side of FIG. 8, first, the total VOB number 1756 included in the Video Title Set is recorded. After that, the sequence (Vide
o Object Sequence) VOs that correspond in order according to the order
The VOB_IDs 1757, 1758, ... Of B are recorded.

Video Object Sequence Information 17
The sequence indicated by 52 is, for example, "AV File.
Recording order to 1401 (earliest recording time), "recording arrangement order on information storage medium (Optical Disk) as shown in FIG. 4""VOB size order", etc. Can be set VTS (VideoTitle
Set) Record video on one tape by sequentially ordering all VOBs in 1402 V
A user interface similar to TR can be provided. For example: -Fast forward (FF) or rewind (FR) of the tape to find the place you want to see-Check the entire recorded contents by fast forward (FF) of the tape-Already record by fast forward (FF) or rewind (FR) of the tape The process of searching for a designated unused place and overwriting new video information on the unused place is performed using Video Object Sequence Information 1
752 can be used.

Video Object Sequ shown on the right side of FIG.
ence Information 1752 The information content will be described with reference to FIG. First, VOB # 1 to VOB # with the arrangement order on the information storage medium (Optical Disk) shown in FIG.
3 is recorded, and this recording order is “[4] Allocation Ma
Consider the case where the order is from 1 to 7 described in “Explanation of Contents of p Table.” The sequence order is set for these data in the “recording order to AV File 1401 (early recording time)”. In this case, the sequence order arrangement is as shown in Fig. 9 (a3).
It can be seen that the order of arrangement from # α1471 to Extent # ζ1470 has changed. Figure 8 "Video Objec
The first VOB_ID1757 "in the t Sequence specifies" VOB # 1 1461 "in FIG. 9 (a3),
"Second VOB_ in Video Object Sequence
The ID 1758 is "VOB # 2 146" in FIG. 9 (a3).
2 "is specified.

FIG. 9B3 shows the Video Object Sequence In.
Figure 17 shows another example specified in formation 1752. VOB #A 1771 and VOB #B 1772 are
Belongs to VideoObjects 1012 (classified), VOB
#C 1773, VOB # F1776, VOB #G 1
777 belongs (classified) to Audio Objects 1014, and has VOB #D 1774 and VOB #E 1775.
Belongs to Picture Objects 1013. In this way, the sequence order can be specified in a mixed manner regardless of the type of VOB. In Figure 9, at the end, Thumbnail Objects are summarized.
VOB belonging to 1016 (VOB #H 1778,
VOB #I 1779) is set.

[7] Still image information (Picture Objects
) Recording format of the information storage medium (Optical Disk 10) shown in FIG.
01) A recording format (recording format) for recording still image information on the recording medium will be described below. The still image information or audio information added later to the still image information (information to be input by voice after inputting the description for each still image information and additionally recorded by after recording) is the Picture of FIG. 1 (d).
Objects 1013 or Audio Objects 1016
Record in place. For example, it is assumed that a plurality of still images taken by a digital camera (digital camera) are recorded on the information storage medium (Optical Disk 1001) at once.
However, the format is such that a plurality of still images can be recorded continuously. In order to enable continuous recording of a plurality of still images, at least two still images are in a format in which they are continuously recorded in adjacent locations on the information storage medium (Optical Disk 1001).

The still image or the audio information to be added to the still image also follows the data structure of FIG. 3 with emphasis on format continuity and consistency with the video information (Video Objects 1012). In MPEG1 or MPEG2, which is a kind of video information recording format (video information compression format), the compression information for one video frame corresponding to the above-mentioned GOP start position is “I-Pictur”.
It exists in the form of e ". Even for input still images
It is converted into I-Pictures 1706, 1707, 1708, 1709 using the compression technology of MPEG1 or MPEG2, and V_PCK (video pack) 1661, 1662, as shown in FIG. 10 (a3) or FIG. 10 (c3).
1663, 1668, 1669, 1670, 1671, 16
72, 1673, 1674 and is recorded on the information storage medium (Optical Disk 1001). As described above, in the DVD-RAM disc, each V_PCK (video pack) is recorded in each sector having a recording size of 2034 bytes (see FIG. 3 (f)).
The size is 2048 Bytes, but Pa every 14 Bytes
Since there is a ck Header, the recording amount in 1 Pack is 2034Byt
es. ] I-Pictu corresponding to one still image information
Dummy information 1704 is recorded in a portion that is insufficient with respect to an integer multiple of re size of 2034 bytes. The I-Picture size 1808 in each VOBU is recorded in the information of VOBUMap for Picture Objects as shown in FIG. 13 (details will be described later), so V_PCK
(Video pack) Dummy from anywhere in 1670
) It is known whether the information 1704 is included. Therefore, the dummy (Dum
The contents of my) information 1704 can be set arbitrarily. For example, in addition to the method of setting all “0” or all “1” as the content of the dummy information 1704, for example, a sequence end code or the like may be recorded as specific information that can be understood only by reproducing the portion. it can. Although the arrangement of the I-Picture is omitted in FIGS. 10 (b3) and (d3), it has the same structure as (a3) and (c3).

For example, when a still image is taken with a digital camera and it is desired to add a comment by handwriting directly on the taken image (still image), the information is I-Pict.
In addition to the still image recorded as ure, SP_PCK (Sub-pi) as a sub-picture stream (SP_Stream)
Cture Pack) 1681, 1683, 1684. During playback, the I-Picture still image information in V_PCK and the sub-picture information in SP_PCK are displayed in an overlapping manner.

A_PCK (Audio Pack) 16 is the audio information obtained by audio input of comments and explanations for each still image.
91 to 1702.

As described above, the V_PCK information 1661 to 1
674, SP_PCK information 1681 to 1684, A_P
CK information 1691 to 1702 is collected for each related still image, and VOBU (Video Object for
Picture Objects) 1641 to 1650 units. Therefore, the format shown in FIG. 10 forms different VOBUs for each still image. In the embodiment shown in FIG. 10, V_ must always be A_PCK in VOBU.
It is preceded by PCK and SP_PCK. as a result
Each pack is separated in the VOBU to facilitate management of information in each pack. However, in the embodiment of the present invention, for example, Video O
A_PC like the recording format in bjects 1012
The order of K, V_PCK, and SP_PCK can be mixed and arranged. Furthermore, for V_PCK 1664 having still picture information recorded in the I-Picture format, it is necessary that all V_PCK 1664 be arranged in the same VOBU 1642, but a part of audio information related to VOBU 1642 is recorded. The A_PCK (1694) that was
It is also allowed to be placed in VOBU 1643. As will be described later in the explanation of FIG. 13, VOBU Map for Pict
of the audio information recorded in ure Objects 1738
E_PTM (Presentation terminating time) 181
This is because continuous audio information can be separated corresponding to each still image by using the information of 4. In the format structure shown in FIG. 10 as a format in which a plurality of still image information is continuously recorded, 1) one VOB is formed from a plurality of VOBUs.

2) One VOB has only one VOBU, and each VO has one still image recorded.
B is grouped to form a VTT (Video Title).

The two methods of (1) and (2) are allowed, and both types of recording are permitted.

FIGS. 10 (b1) to 10 (d3) show the former format structure, and FIG. 10 (a) shows the latter format structure. The former format structure is shown in Fig. 10.
10B shows a basic structure, and as a special example, FIG. 10C shows a structure that does not include voice information (A_PCK).
(A) shows a structure that does not include the original still image (V_PCK). After recording a plurality of still image information that does not include audio information, for example, captured by a digital camera on the information storage medium (Optical Disk 1001) at a time, while watching the recorded plurality of still image information, a memo about each still image is recorded. There is a case of input (additional recording as SP_PCK) or voice input (additional recording as A_PCK). In this case, only additional information (memo or audio format) is collected, and a VOB different from the VOB in which the original still image information is recorded is formed to form an information storage medium (Optical Disk).
1001) You can edit and record more efficiently by recording on the above. This is because it is not necessary to change the contents of the VOB in which the original still image information is recorded when the VOB is recorded as another VOB. This is a VO that collects only additional information (memo or audio format) for the purpose of editing still image information.
The recording format in B 1634 is similar to that in FIG. 10D (A_PCK not including V_PCK and
Only SP_PCK data).

When the latter format is adopted as a format in which a plurality of pieces of still image information are continuously recorded, a plurality of VOBs are grouped as shown in FIG. 3C and different VTTs (Video Titles) are formed. 14
07, 1408 belong to the group.

In the recording format shown in FIG. 10, at least two still images are recorded on an information storage medium (Optical Disk 10
01) It is possible to record continuously next to adjacent locations, and since it is generally in the format that can record multiple still images continuously, for example, multiple still images taken with a digital camera (digital camera) Images at once in an information storage medium (Opti
It has a great effect and feature that it can be recorded at high speed when recording on the cal Disk 1001). Other than that, VO
The recording format capable of recording a plurality of still images in B has a great effect as described below.

In the conventional recording format of a plurality of still images photographed by a digital camera (digital camera), each still image is divided into different data files and recorded.
When each still image information is recorded in separate files,
There is no shooting order information between pieces of still image information or grouping information between pieces of similar still image information. On the other hand, photographic film always comes with a negative film (or a positive film that is created as needed). Therefore, when it is desired to specify a specific still image by reprinting, it is possible to search for a still image to be searched on a negative film while following the shooting order. In the information recording / reproducing apparatus (video recorder) for recording video information shown in FIG. 19, an information storage medium (Optic
Video Object for P recorded on al Disk 1001)
The information of icture Objects 1632 is read and each VOBU 164 is read like a positive film as shown in FIG.
It will be displayed on the screen in the order of 2 to 1644.
For example, the still image at the left end of FIG. 11 represents the information of VOBU1642, and the still image at the center displays the information of VOBU1643. The still image in FIG. 11 can be moved left and right on the screen, and the user designates the still image to be edited (or hard copied). Video Object
Unlike s1012, the still image information uses the display as shown in FIG. 11 to specify each still image. (Video O
In bjects 1012, the video information range to be edited is specified by the display time. ) [8] Video Object Informatio for still image information
Data structure in n Video Object shown in Fig. 1 (f)
Information 1107 is divided into a general video information management information part and a still image information management information part. The latter data structure in the management information portion relating to still image information has the structure shown in FIG. Separate V
video Object for Picture Objects (VOB for Pictu
ReObjects) are the individual still image information grouped in Video Object Information for Picture Objects 1
731 to 1733. A brief explanation of the information content shown on the right side of Fig. 12 * VOB General Information for Picture Objects17
36 ... For example, ID information uniquely set for each VOB so that a specific VOB can be designated in Cell Playback Information 1108.

VOB type information ... Which information in (a) to (d) of FIG. 10 belongs, and video information (Video Objects 1012) / still image information (Picture O)
bjects 1013) / audio information (Audio Objects 1014).
date and time recorded on cal Disk 1001). Etc.

* VOB Attribute Information for Pictur
e Objects 1737 ...- Attribute information of still image information such as resolution of still image information
-Attribute information of audio information-Number of sub-picture information and recording format.

* VOBUMap for Picture Objects 1
738 ... Information about all still images included in the VOB.

The above information * is recorded. See also Video Object Information for Picture Objects Man
agement Information 1721 contains VOB for Picture O included in this AV file.
The number of bjects and general information about VOBs contained in this AV file are recorded. Also, the Video shown in Fig. 1 (f)
Where each V in Object Information 1107
ideo Object Information for PictureObjects1731
~ 1733 Address information indicating whether information is recorded is Search Pointer of Video Object Information for P
icture Objects 1726 to 1728.

[9] VOBU Ma for still image information
Data structure in p VOBU Map for Picture Objects 1
The data structure in 738 will be described. As shown in the upper left of FIG. 13, VOBU Map for Picture Objects 1
At the beginning of 738, the number of still images (VOBU number) 1801 included in the corresponding VOB is shown.
After that, information regarding each still image (contents of VOBU) is described in the order of arrangement in the VOB.

The information shown on the right side of FIG. 13 is recorded as information about each still image (contents of VOBU).
VOBU having one piece of still image information including audio information
The information 1411 is divided and recorded in a plurality of sectors 1431 to 1434 as shown in FIG. The data size 1806 for one piece of still image information (VOBU) is represented by the number of dividedly recorded sectors.

VOBU having A_PCK (Audio Pack) inside as shown in FIGS. 10 (a) and 10 (b)
For one, the display time 1807 of one still image is VO
This means the playback time of the audio information in the BU and does not have A_PCK (AudioPack) as shown in Fig. 10 (c).
U represents a still display period of a still image.

VO in which one still image information is recorded
The following information * is recorded as information regarding the still image information itself in the BU.

* Start V_P in the corresponding VOBU
CK address 1808 ... Taking FIG. 10 as an example, V_PCK1661, 1664, 1665, 1666, 1 located at the head of each VOBU
Address information such as 667, 1668, 1671, 1674 is recorded. VO that contains the still image you want to see
B's ID and the still image number in that VOB (VOBU
Number) is designated, the optical head (202 in FIG. 20) directly accesses the head V_PCK address of the corresponding VOBU using this address information.

As address information, an LSN (Logical Sector Number) generally indicating a direct position on an information storage medium (Optical Disk 1001) as shown in FIG. 4 is generally shown. However, the display method is not limited to the above display method, and as another application example, as shown in FIG. 9 (a3), according to the sequence order arrangement of the data, it is displayed by the number of sectors (relative address) counted in the sequence order from the start address of the same VOB. Is also good.

* I-Picture in the corresponding VOBU
Size 1809 ... As described with reference to FIG. 10 (a3) and FIG. 10 (c3), of the data sizes of the I-Pictures 1706 and 1707, a portion that is insufficient for an integral multiple of the pack size of 2034 Bytes is dummy (Dummy) information. 1704 is recorded. Therefore, if the I-Picture size is known in advance, the location where the dummy information 1704 is recorded is also known, so that it is possible to enter the access operation to the next location without playing back this portion during playback. High-speed playback can be realized.

* Still image (V_PCK & SP_PCK
) S_PTM (Presentation starting time) 1810 ... This means information indicating the display timing of a still image at the time of reproduction and a sub-picture added to it. According to the present invention, at the time of reproduction, the still image recorded in V_PCK and the sub-picture (Sub-picture) added to it
Are displayed at the same time. It is used to set the display timing with the audio information in the same VOBU.

* First_S of still image (V_PCK)
CR (First System Crock) 1811 ... This means the value of the system clock when the first V_PCK in the VOBU is created for recording on the information storage medium (Optical Disk 1001), and seamless (continuous) reproduction is performed. Use this information when you do.

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

* Start A_PCK address in VOBU
1812 ... This is, when taking FIG. 10 as an example, A_PCK1691, 1693, 1694, 16 located at the head of each VOBU
Address information such as 95, 1696, 1699, 1702 is recorded. VOB that contains the still image you want to see
Of the ID and the still image number (VOBU number) in the VOB are designated, the optical head (202 in FIG. 20) directly accesses the head A_PCK address of the corresponding VOBU by using this address information.

In the present invention, as shown in FIG. 14C, the voice information (A_PCK information) in one VOB is different from the other voice information.
It can be displayed in combination with still image information belonging to VOB. Therefore, this information is used when selectively reproducing only the voice information in the VOB.

As address information, an LSN (Logical Sector Number) generally indicating a direct position on an information storage medium (Optical Disk 1001) as shown in FIG. 4 is generally shown. However, the display method is not limited to the above display method, and as another application example, as shown in FIG. 9 (a3), according to the sequence order arrangement of the data, it is displayed by the number of sectors (relative address) counted in the sequence order from the start address of the same VOB. Is also good.

* S_PTM of voice information (A_PCK)
(Presentation starting time) 1813 ... This means information indicating the output timing of audio information during reproduction. In most cases, this value is a static image (V_P
It matches S_PTM1810 of CK & SP_PCK), but if you want to output the sound after a specific time (for example, 0.5 seconds) after displaying the still image screen, set the value by shifting. Thus, this information is used for timing control between still image display and audio information output.

* E_PTM of voice information (A_PCK)
(Presentation terminating time) 1814 This means the information indicating the timing at the end of the output of the audio information during reproduction, and this information is used for the timing control between the still image display and the audio information output. In many cases,
This value is the still image (V_PCK & SP_ to be displayed next.
Although it matches S_PTM 1810 of PCK), it can be set by shifting the value when it is desired to display the still image information to be displayed next after the specific time (for example, 0.5 seconds) has elapsed after the audio output is intentionally ended. .

* First_S of voice information (A_PCK)
CR (First System Crock) 1815 This means the value of the system clock when the first A_PCK in the VOBU was created for recording on the information storage medium (Optical Disk 1001), and seamless (continuous) reproduction Use this information when doing.

* First_S of voice information (A_PCK)
CR (First System Crock) 1815 This means the value of the system clock when the last A_PCK in the VOBU was created for recording on the information storage medium (Optical Disk 1001), and seamless (continuous) reproduction Use this information when doing.

By recording PTM information and SCR information relating to still image information and audio information in this way,
There is a feature that video information belonging to Objects 1012 can be used as a part of still image information. Ie Video Objec
The video information itself belonging to ts 1012 is not processed at all, and a new Video Objec for still images is displayed as shown below.
t Information for Picture Objects is defined. For example, 2 compared to the conventional video method (Video Objects 1012)
A case where a still image that changes every second is defined will be described. Generally 1 GOP for video information
Since the required time is about 0.5 seconds, the length of one VOBU shown in FIG. 3 (e) is often around 0.5 seconds. Therefore, the head I-Picture is regarded as a still image for every four VOBUs from 2 seconds ÷ 0.5 seconds = 4 and the head V_PCK address 1808 in the VOB and the I-Pict in the VOB are considered.
The information of the ure size 1809 is set, and similarly, the numerical value on the right side of FIG. 18 is set.

As a result, as shown in FIG. 14, different V
By combining and displaying the still image information and audio information belonging to OB, only the audio part in the video information belonging to Video Objects 1012 can be output as audio when the still image is displayed, or the user in the video information belonging to Video Objects 1012 can Only the scenes you like can be converted into still images and displayed.

[10] Method of displaying a plurality of still images As a method of displaying a plurality of still image information recorded on the information storage medium (Optical Disk 1001), a plurality of still images are displayed side by side as shown in FIG. Method (however, still images displayed side by side move or switch)
Then, there is a method in which one still image is displayed at a time and the still image to be displayed is changed every specific time. In either case, the data structure is C as shown in FIGS. 6 and 7.
The user can select the display method by using the information recording / reproducing apparatus (video recorder) for recording video information shown in FIG.

Similar to Video Object Information 1107, CellPlayback Information 1 shown in FIG.
The inside of 108 is Cell Playback Info related to video information.
Cell Playback Infor on rmation and still image information
It is divided into mation. Cel on still image information
In l Playback Information, as shown in FIG. 14, a still image and audio information can be reproduced from different places and combined and displayed. That is, FIG.
V_ used for display in Cell as shown in (c)
PCK 1852, 1854 and SP_PCK 1848
Are still images 1832, 18 in VOB # A1821
34 is designated, and the voice information output from the same Cell is different from VOB #A 1821. VOB #B 18
The audio information 1845 and 1846 in 22 can be designated.

This structure is convenient for post-recording setting for still images. For example, if still image information taken by a digital camera without a voice input function is recorded as it is on an information storage medium (Optical Disk 1001), the recording result is A_ as shown in FIG.
The structure does not include PCK (Audio Pack). While reproducing the information and displaying it on the screen as shown in Fig. 11, commentary and comments can be added to each sheet such as "voice input by microphone", "overwriting of marks by handwriting", "addition of text information by key-in", etc. Consider the case of adding by the method. In this case, the recording format is as shown in FIG.
From the structure not including A_PCK in (c3) to FIG.
If you try to change to a structure that includes A_PCK as in 3), the process of re-recording on the information storage medium (Optical Disk 1001) will occur, and the process will be troublesome and the processing time will take a great deal. . On the other hand, as shown in FIG. 10 (c), the data not including A_PCK (Audio Pack) shown in FIG. 10 (c3) is changed to another VOB 1634 as the information storage medium (Optical Disk). 1001) makes it possible to add information later to a still image very easily and in a short time. At the time of display, VOB 16
33 and VOB 1634 are combined and displayed / outputted.

Cell Playback that enables the expression of FIG.
The data structure in Information for Picture Objects is shown in FIG. First, ID information 1873, which is an identifier unique to Cell, is described, and then Ce described
ll type information 1880 is 1) Ce regarding video information (Video Objects 1012).
ll information, Cell information about still images (Picture Objects 1013), or audio information (Audio Objects 101
4) Identification information as Cell information only and 2) VOB in which multiple still images are recorded in VOB
Ce for (formats in FIGS. 10B to 10D)
ll information (corresponding to the structure of FIG. 15), 1 in VOB
VOB with only one still image recorded (Fig. 10 (a)
Cell information (see FIG. 16)
Identification structure information).

VOB in which still images are recorded in this way
Differences in recording formats of CellPlayback Informatio
The major feature is that it is absorbed at the level of n for Picture Objects, and at the PGC level shown in FIG. 7, it is possible to reproduce and display in the same sequence regardless of the recording format of the VOB in which a still image is recorded and the video information. There is.

The VOB in which the Video Pack is recorded
In the embodiment of FIG. 14, VOB # A 18 is used as the ID information.
Specify 21. When displaying from the second still image of VOB # A 1821, VOB # A 1 is designated as the first still image to be displayed 1875 in the Cell.
The still image number 2 of 821 is designated. Further, in accordance with the embodiment shown in FIG. 14, the still image number h 1 of VOB # A 1821 is designated as the still image designation 1876 to be displayed last in the Cell. Like this, CellPlayback
A major feature of Information for Picture Objects is that the "static image" itself is specified as the specified target. In the embodiment of FIG. 15, “still image number” is designated as the method for designating a still image, but not limited to this, “designation of a unit (for example, VOBU) itself in which a still image is recorded”.
"Specify start address where still image is recorded""VOB
It is also possible to specify by "Sequence order within the cell." In Fig. 15, the first and last still images in the Cell are specified.
There is also a method of displaying the first still image displayed in ll and the total number of still images displayed in Cell.

Similarly, the VOB ID information 1877 in which the Audio Pack is recorded (in the embodiment of FIG. 14,
VOB # B 1822) and still image number 1878 (the still image number j is designated in the embodiment of FIG. 14) indicating the recording destination of the audio information (A_PCK) that is output first in the Cell. . In Figure 15, Cell
Still image number information indicating the recording destination of the last output audio information (A_PCK) is not described. However, with the still image number 1875 displayed first in the cell
Since the total number of still images displayed in the same cell can be known from the still image number 1876 displayed last in the cell, it is not necessary to describe. In addition, when audio information is designated for all still images in FIG.
Voice information S_PTM 1813 and E_PTM 181
You can see the display time per still image from 4
When audio information is not designated 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.

[11] Grouping / Display Method When Only One Still Image is Recorded in 1VOB 1VOB (Video Object for Pi) as shown in FIG. 10A.
cture Objects) When only one still image is recorded in 1631, VOBs of a plurality of still images are collected and grouped and treated as Part_of_Title. This grouping information is the Video Titl shown in Fig. 1 (f).
Part_of_Ti shown in Fig. 8 in e Set Information 1106
Recorded in tles Information 1753. Part_of_Titles Information 1 about the still image shown in FIG.
Data structure in 753 and VOB Map for Pic in it
The data structure in ture Objects 1899 (Fig. 146) is the data structure in Video Object Information shown in Fig. 12 and the VOBU Map for Picture Objects shown in Fig. 13.
It has a structure almost similar to the data structure in.

Cell Playback Infor corresponding to this
The mation for Picture Objects structure (Fig. 16) is also shown in Fig. 15.
It has the same structure as.

Next, the structure of the information recording / reproducing apparatus (video recorder) for recording video information will be described.

FIG. 19 is a block diagram showing the construction of an information recording / reproducing apparatus (video recorder) for recording video information.
In this specification, for convenience of space in the drawings, reference numerals are given to the inside of blocks for explanation.

The apparatus main body of the video recorder shown in FIG. 19 roughly includes an information storage medium (optical disk) 201.
The information storage medium (optical disk) 201
A disk drive unit for recording and reproducing video information, an encoder unit 1550 constituting a recording side,
Decoder unit 1560 that constitutes the playback side, and ROM inside
And a RAM (semiconductor memory) and a system control unit (MPU unit) 1530 that controls the operation of the apparatus body.

The encoder unit 1550 has an ADC (analog / digital converter) 1552, a video encoder (V encoder) 1553, an audio encoder (A encoder) 1554, and a sub-picture encoder (SP).
An encoder) 1555, a formatter 1556, and a buffer memory 1557 are provided.

The ADC 1552 has an AV input section 1542.
External analog video signal + external analog audio signal or analog TV signal + analog audio signal from the TV tuner 1544 is input. This AD
The C1552 digitizes the input analog video signal with, for example, a sampling frequency of 13.5 MHz and a quantization bit number of 8 bits. (That is, the luminance component Y, the color difference component Cr (or Y−R) and the color difference component Cb
Each (or Y-B) is quantized with 8 bits. Similarly, the ADC 1552 outputs the input analog audio signal to, for example, a sampling frequency of 48k.
Digitization is performed with Hz and a quantization bit number of 16 bits.

When analog video signals and digital audio signals are input to the ADC 1552,
The ADC 1552 allows the digital audio signal to pass through. (The content of the digital audio signal is not changed,
A process that reduces only the jitter associated with digital signals,
Alternatively, processing such as changing the sampling rate or the number of quantization bits may be performed).

On the other hand, when a digital video signal and a digital audio signal are input to the ADC 1552,
The ADC 1552 allows the digital video signal and the digital audio signal to pass through (these digital signals may be subjected to the jitter reduction processing, the sampling rate changing processing, etc. without changing the contents).

When still image information from the digital camera 1543 is input in addition to the above video signal input, the V encoder 1 is directly input without passing through the ADC 1552.
Information is input to 553.

The digital video signal component from the ADC 1552 is sent to the formatter 1556 via the video encoder (V encoder) 1553. Also, AD
The digital audio signal component from C1552 is sent to the formatter 1556 via the audio encoder (A encoder) 1554. Alternatively, the still image signal directly input to the V encoder 1553 is sent from the V encoder 1553 to the 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.

Still image information is recorded on the digital camera 1543 in a format such as a bitmap format or a JPEG format. On the other hand, in the present invention, a still image is recorded on the information storage medium (optical disk) 201 in the MPEG2 I-picture format. Therefore, in the present invention, “bitmap → MPEG2” “JPEG → M”
The V encoder 1553 also has a format conversion function such as PEG2 ″.

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

When a video signal is input from the AV input section 1542 (for example, DV with independent output terminal for sub-picture signal)
(A signal from a D video player), or when a video signal having such a data structure is broadcast and received by the TV tuner 1544, the sub-picture signal component (sub-picture pack) in the video signal is a sub-picture. Encoder (SP
It is input to the encoder) 1555. SP encoder 1
The sub-picture data input to 555 is arranged in a predetermined signal form and sent to the formatter 1556.

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

In the case of digital broadcasting, the video signal is MPE
It is transmitted in the G2 TS (transport stream) format. Generally, when a video signal is recorded in the MPEG2 format on the information storage medium (optical disc) 201, the PS (program stream) format is used. Therefore, when digital broadcasting is received, the received signal is TV
It is sent from the tuner 1544 directly to the formatter 1556, and "TS → PS conversion" is performed in the formatter 1556.

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

As a result of the pre-encoding, if the data compression amount is insufficient (if the desired video program does not fit on the information storage medium (optical disk) 201 to be recorded), there is an opportunity to pre-encode again (for example, If the recording source is a repeatable source, such as a videotape or video disc, then a partial re-encoding of the main video data is performed and the re-encoded part of the main video data is the pre-encoded main video data. It is replaced with the video data part. By such a series of processing, the main video data and audio data are encoded, and the value of the average bit rate required for recording is
Significantly reduced.

Similarly, the 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 data structure of a desired video object.

That is, main video data (video data)
Cell is set as the minimum unit of the program chain, then the configuration of the cells that make up the program chain, the attributes of the main video, sub-video and audio, etc. are set (some of these attribute information are set when each data is encoded. The obtained information is used), the management information including various information is the information related to the cell, and the management information recording area (Control Information 1011
) Will be recorded in.

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. It should be noted that PTS (presentation time stamp) and DTS (decode time stamp) are appropriately included in packs other than the dummy pack.
Etc., the time stamp is 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 unit so that the data can be reproduced in the order of the time code of each data, and a VOB composed of a plurality of cells is formed.

When the image information is digitally copied from the information recording / reproducing apparatus (video recorder) for recording the image information, the contents of the cells, program chains, management tables, time stamps, etc. are determined from the beginning. Need not be created again.

The disc drive unit for reading and writing (recording and / or reproducing) information from and to the information storage medium (optical disc) 201 is the disc changer unit 150.
0, the information recording / reproducing unit 101, and the temporary storage unit 1534.
, A data processor 1536, and a system time counter (or system time clock; STC) 1538
It has and.

The temporary storage unit 1534 is the information recording / reproducing unit 10.
Buffering a fixed amount of data (data output from the encoder unit 1550) written to the information storage medium (optical disc) 201 via the information recording / reproducing unit 101. ) 201 data reproduced (decoder section 1560
(Data input to) is used to buffer a certain amount of data.

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

The temporary storage unit 1534 temporarily stores recording information until the information storage medium (optical disc) 201 is replaced with a new disc when the information storage medium (optical disc) 201 is used up during recording. Especially available.

Further, the temporary storage unit 1534 temporarily stores the data extraly read from the normal drive within a fixed time when a high-speed recording / reproducing unit having a double speed or more is adopted as the information recording / reproducing unit 101. Is also available.
If the read data at the time of reproduction is buffered in the temporary storage unit 1534, the reproduction data buffered in the temporary storage unit 1534 can be switched and used even when the optical head 202 of FIG. 20 causes a reading error due to vibration shock or the like. By doing so, it is possible to prevent the playback video from being interrupted.

Although not shown in FIG. 19, if the information recording / reproducing apparatus for video information recording (video recorder) is provided with an external card slot, the EEPROM can be sold separately as an optional IC card. If the information recording / reproducing apparatus (recording / reproducing recorder) for recording video information is provided with an external drive slot or a SCSI interface, the above HDD can be sold separately as an optional extended drive.

In the case where the personal computer is converted into a DVD 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.

The data processor 1536 shown in FIG. 19 is a system control unit (MPU unit) [ROM / RAM built-in] 1530.
According to the control of: -supply of the video information signal for recording from the encoder unit 1550 to the information recording / reproducing unit 101; -transferring the video information signal reproduced from the information recording / reproducing unit 101 to another part- Rewriting of management information (Control Information 1011) recorded on the information storage medium (optical disk) 201. Image information and management information (Control Information) which is data recorded on the information storage medium (optical disk) 201.
1011) partial deletion processing is performed.

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

Among the execution results of the system control unit 1530, the contents to be notified to the user of the information recording / reproducing apparatus for video information recording (recording / reproducing recorder) are the video recorder display unit 154.
8 is displayed.

The system control unit (MPU unit) 1530
Is a disc changer unit 1500 and an information recording / reproducing unit 10.
1, the timing for controlling the data processor 1536, the encoder unit 1550 and / or the decoder unit 1560 can be executed based on the time data from the STC 1538 (the recording / playback operation is normally performed by the STC1).
It is executed in synchronization with the time clock from 538,
Other processing may be executed at a timing independent of STC1538).

The decoder unit 1560 separates and extracts each pack from the video information having the pack structure recorded on the information storage medium (optical disk) 201.
2, a memory 1563 used when performing signal processing such as pack separation and other, a video decoder (V decoder) 1564 for decoding main video data (contents of video pack) separated by the separator 1562, and a sub video separated by the separator 1562. Sub-picture decoder (SP decoder) 1565 for decoding data (content of sub-picture (sub-picture) pack), audio decoder (A decoder) 1568 for decoding audio data (content of audio pack) separated by the separator 1562, V The SP decoder 156 is added to the video data from the decoder 1564.
The video processor 1566 and the video processor 156 that appropriately combine the sub-picture data from 5 to output the menu, highlight button, subtitles, and other sub-pictures on the main picture.
Video / digital / analog converter (V / DA) that converts the digital video output from 6 to an analog video signal
C) Audio / digital / analog converter (A / DAC) 156 for converting digital audio output from C 1567 and A decoder 1568 into an analog audio signal
Equipped with 7.

Analog video signal (video information signal in analog state) from V / DAC 1567 and A / DAC
The analog audio signal from 67 is sent to the AV output unit 15
Via 46, it is supplied to an external component (2 to 6-channel multi-channel stereo device + monitor TV or projector) not shown.

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

The internal structure of the information recording / reproducing unit (physical block) 101 will be described with reference to FIG.

(22A) Functional description of the information recording / reproducing section (22A-1) Basic function of the information recording / reproducing section In the information recording / reproducing section: -New by using a focused spot at a predetermined position on the information storage medium (optical disk) 201. Records or rewrites information (including erasing information).

The information already recorded is reproduced from a predetermined position on the information storage medium (optical disk) 201 by using a focused spot. Etc. are processed.

(22A-2) Basic Function Achieving Means of Information Recording / Reproducing Section In the information recording / reproducing section, as means for achieving the above-mentioned basic functions, light is condensed along a track (not shown) on the information storage medium 201. Trace (follow) the spot.

The information recording / reproducing / erasing is switched by changing the light amount of the focused spot irradiated on the information storage medium 201.

The externally applied recording signal d is converted into an optimum signal for recording with high density and low error rate. And so on.

(22B) Structure of mechanism part and operation of detection part (22B-1) Basic structure of optical head 202 and signal detection circuit (22B-1-1) Signal detection by optical head 202 The optical head 202 is basically Although not shown, it is composed of a semiconductor laser element which is a light source, a photodetector and an objective lens.

The laser light emitted from the semiconductor laser device is passed through the objective lens to the information storage medium (optical disk) 2
Focused on 01. Information storage medium (optical disk) 20
The laser light reflected by the light-reflecting film or the light-reflective recording film 1 is photoelectrically converted by the photodetector.

The detected current obtained by the photodetector is the amplifier 21
A current-voltage conversion is performed by 3 to be a detection signal. This detection signal is processed by the focus / track error detection circuit 217 or the binarization circuit 212. In general, the photodetector is divided into a plurality of photodetection regions and individually detects changes in the amount of light applied to each photodetection region. Focus / track error detection circuit 2 for each individual detection signal
In step 17, the sum and difference are calculated to detect the focus shift and the track shift. A signal on the information storage medium 201 is reproduced by detecting a change in the amount of reflected light from the light reflection film or the light reflective recording film of the information storage medium (optical disc) 201.

(22B-1-2) Focus Deviation Detection Method As a method for optically detecting the amount of focus deviation * Astigmatism method: Reflected by the light reflecting film or the light reflecting recording film of the information storage medium (optical disk) 201. Although not shown, an optical element that generates astigmatism is arranged in the detection optical path of the laser light emitted, and the shape change of the laser light irradiated on the photodetector is detected. The light detection area is divided into four diagonal lines. For the detection signal obtained from each detection area,
The focus / track error detection circuit 217 obtains a focus error detection signal by taking the difference between the diagonal sums. Or * Knife edge method: A method of arranging a knife edge that asymmetrically shields a part of the laser beam reflected by the information storage medium 201. The light detection region is divided into two, and the difference between the detection signals obtained from each detection region is taken to obtain the focus error detection signal. Often use either.

(22B-1-3) Track Deviation Detection Method The information storage medium (optical disk) 201 has spiral or concentric tracks, and information is recorded on the tracks. Information is reproduced or recorded / erased by tracing a focused spot along this track. In order to stably trace the focused spot along the track,
It is necessary to optically detect the relative displacement between the track and the focused spot. The track deviation detection method is generally a * DPD (Differential Phase Detection) method: a change in the intensity distribution on the photodetector of the laser light reflected by the light reflection film or the light reflection recording film of the information storage medium (optical disk) 201. To detect. The light detection area is divided into four diagonal lines. The focus / track error detection circuit 217 obtains the difference between the diagonal sums of the detection signals obtained from the respective detection areas to obtain the track error detection signal. Alternatively, * Push-Pull method: A change in the intensity distribution of the laser light reflected by the information storage medium 201 on the photodetector is detected. The light detection area is divided into two, and the difference between the detection signals obtained from each detection area is taken to obtain the track error detection signal.

* Twin-Spot method: ± 1st-order diffracted light for irradiating the information storage medium 201 by arranging a diffraction element or the like in the light transmitting system between the semiconductor laser element and the information storage medium 201 to divide the light into a plurality of wavefronts. Changes in the amount of reflected light of Separately from the light detection area for reproducing signal detection, a light detection area for individually detecting the reflected light quantity of the + 1st order diffracted light and the reflected light quantity of the −1st order diffracted light is arranged, and the difference between the respective detected signals is taken to detect the track error detection signal. To get There are such methods and means.

(22B-1-4) Objective Lens Actuator Structure The objective lens (not shown) for converging the laser light emitted from the semiconductor laser element on the information storage medium 201 is the output of the objective lens actuator drive circuit 218. It has a structure that can move in two axial directions depending on the electric current. The objective lens is moved in the direction perpendicular to the information storage medium 201 for the focus shift correction and in the radial direction of the information storage medium 201 for the track shift correction. Although not shown, the moving mechanism of the objective lens is called an objective lens actuator. As the objective lens actuator structure: * Shaft sliding method: A method in which the blade integrated with the objective lens moves along the central axis (shaft), and the blade moves in the direction along the central axis to perform defocus correction.
A method for correcting track deviation by rotating the blade around the center axis. Or * 4 wire system: A blade with an integrated objective lens is connected to a fixed system by 4 wires, and the elastic deformation of the wire is used to move the blade in two axial directions. Is often used.

Both methods have a permanent magnet and a coil,
The blade is moved by passing an electric current through a coil connected to the blade.

(22B-2) Rotation control system for information storage medium 201 The information storage medium (optical disk) 20 is placed on the rotary table 221 which is rotated by the driving force of the spindle motor 204.
Wear 1.

The number of rotations of the information storage medium 201 is detected by the reproduction signal obtained from the information storage medium 201. That is, the detection signal (analog signal) output from the amplifier 213 is 2
The digitization circuit 212 converts the signal into a digital signal, and the PLL circuit 211 generates a constant period signal (reference clock signal) from this signal. Information storage medium rotation speed detection circuit 2
In 14, the number of revolutions of the information storage medium 201 is detected using this signal and the value is output.

A correspondence table of the number of revolutions of the information storage medium corresponding to the radial position to be reproduced or recorded / erased on the information storage medium 201 is recorded in the semiconductor memory 219 in advance. When the playback position or recording / erasing position is determined,
The control unit 220 refers to the semiconductor memory 219 information, sets the target rotation speed of the information storage medium 201, and notifies the spindle motor drive circuit 215 of the value.

In the spindle motor drive circuit 215,
The target rotation speed and the information storage medium rotation speed detection circuit 214
Output signal (current rotation speed) is calculated, and a drive current corresponding to the result is applied to the spindle motor 204 to control the rotation speed of the spindle motor 204 to be constant. The output signal of the information storage medium rotation speed detection circuit 214 is a pulse signal having a frequency corresponding to the rotation speed of the information storage medium 201, and the spindle motor drive circuit 21.
In No. 5, both the frequency and the pulse phase of this signal are controlled.

(22B-3) Optical Head Moving Mechanism An optical head moving mechanism (feed motor) 20 for moving the optical head 202 in the radial direction of the information storage medium 201.
I have 3.

A rod-shaped guide shaft is often used as a guide mechanism for moving the optical head 202, and the optical head 202 is moved by utilizing the friction between this guide shaft and a bush attached to a part of the optical head 202. To do. In addition, there is also a method of using a bearing whose frictional force is reduced by using rotary motion.

Although a driving force transmission method for moving the optical head 202 is not shown, a rotary motor having a pinion (rotary gear) is arranged in a fixed system, and a rack which is a linear gear meshing with the pinion is installed in the optical head 202. Is arranged on the side surface of the optical head 202 to convert the rotary motion of the rotary motor into the linear motion of the optical head 202. As another driving force transmission method, there may be used a linear motor method in which a permanent magnet is arranged in a fixed system and an electric current is passed through a coil arranged in the optical head 202 to move the coil in a linear direction.

In both the rotary motor and linear motor systems, basically, a current is passed through the feed motor to generate a driving force for moving the optical head 202. This drive current is supplied from the feed motor drive circuit 216.

(22C) Function of each control circuit (22C-1) Condensing spot trace control In order to perform focus deviation correction or track deviation correction, an optical signal is output according to the output signal (detection signal) of the focus / track error detection circuit 217. The objective lens actuator drive circuit 21 is a circuit that supplies a drive current to an objective lens actuator (not shown) in the head 202.
8 In order to make the objective lens move at a high speed in a high frequency range, a phase compensation circuit for improving the characteristics corresponding to the frequency characteristics of the objective lens actuator is provided inside.

Objective lens actuator drive circuit 21
8, the focus / track deviation correction operation (focus / track /
Track loop) ON / OFF processing, * Vertical direction of information storage medium 201 (focus direction)
To move the objective lens at low speed (focus /
(Executed when the track loop is OFF), * processing of slightly moving the information storage medium 201 in the radial direction (direction crossing the track) by using a kick pulse to move the focused spot to the adjacent track.

(22C-2) Laser light amount control (22C-2-1) Reproduction / recording / erasing switching process The reproduction / recording / erasing switching is performed by changing the light amount of the focused spot irradiated on the information storage medium 201. Do it.

For an information storage medium using the phase change system, the relationship of [light amount during recording]> [light amount during erasing]> [light amount during reproducing] generally holds, and the magneto-optical system is used. The information storage medium generally has a relation of [light amount during recording] ≈ [light amount during erasing]> [light amount during reproducing]. In the case of the magneto-optical method, the recording and erasing processes are controlled by changing the polarity of an external magnetic field (not shown) applied to the information storage medium 201 during recording / erasing.

When reproducing information, the information storage medium 201 is continuously irradiated with a constant amount of light.

When recording new information, a pulsed intermittent light quantity is added to the light quantity at the time of reproduction. When the semiconductor laser element emits a pulsed light with a large amount of light, the light reflective recording film of the information storage medium 201 locally causes an optical change or a shape change, and a recording mark is formed. In the case of overwriting on the already recorded area, the semiconductor laser element is similarly pulsed.

When erasing the already recorded information, a constant light amount larger than that at the time of reproduction is continuously irradiated. In the case of continuously erasing information, the irradiation light amount is returned at the time of reproduction for each specific period such as a sector unit, and information is intermittently reproduced in parallel with the erasing process. The track number and address of the track to be erased intermittently are reproduced, and the erasing process is performed while confirming that there is no error in the erased track.

(22C-2-2) Laser emission control Although not shown, the optical head 202 has a built-in photodetector for detecting the emission amount of the semiconductor laser element. In the semiconductor laser drive circuit 205, the difference between the photodetector output (detection signal of semiconductor laser element light emission amount) and the light emission reference signal given from the recording / reproducing / erasing control waveform generating circuit 206 is taken, and the result is the base semiconductor The drive current to the laser is fed back.

(22D) Various operations related to control system of mechanical part (22D-1) Rotation table 22 for starting control information storage medium (optical disk) 201
When it is mounted on the device 1 and the start control is started, the process is performed according to the following procedure.

1) The target rotation speed is transmitted from the control unit 220 to the spindle motor drive circuit 215, and the spindle motor drive circuit 215 outputs the target rotation speed.
A drive current is supplied to the spindle motor 204 to start rotation of the spindle motor 204.

2) At the same time, a command (execution command) is issued from the control unit 220 to the feed motor drive circuit 216, and a drive current is supplied from the feed motor drive circuit 216 to the optical head drive mechanism (feed motor) 203 to perform optical operation. The head 202 moves to the innermost position of the information storage medium 201. It is confirmed that the optical head 202 is located in the inner peripheral portion of the information storage medium 201 beyond the area where the information is recorded.

3) When the spindle motor 204 reaches the target rotation speed, the status (status report) is sent to the control unit 220.

4) According to the reproduction light amount signal sent from the control section 220 to the recording / reproducing / erasing control waveform generating circuit 206, the semiconductor laser driving circuit 205 causes the optical head 20 to move.
Current is supplied to the semiconductor laser element in 2 to start laser emission.

* The optimum irradiation light amount during reproduction differs depending on the type of the information storage medium (optical disk) 201. At the time of startup, set the lowest irradiation light amount among them.

5) In accordance with a command from the control unit 220, the objective lens (not shown) in the optical head 202 is moved to the position farthest from the information storage medium 201, and the objective lens is slowly brought closer to the information storage medium 201. It is controlled by the objective lens actuator drive circuit 218.

6) At the same time, the focus / track error detection circuit 217 monitors the amount of defocus, and when the objective lens comes near the in-focus position, it outputs a status and notifies the control section 220.

7) Upon receiving the notification, the control unit 220 issues a command to the objective lens actuator drive circuit 218 to turn on the focus loop.

8) The control unit 220 outputs a command to the feed motor drive circuit 216 while keeping the focus loop ON to slowly move the optical head 202 to the information storage medium 20.
1 is moved toward the outer peripheral portion.

9) At the same time, the reproduction signal from the optical head 202 is monitored so that the optical head 202 can detect the information storage medium 2
When the recording area on 01 is reached, the movement of the optical head 202 is stopped and a command for turning on the track loop is issued to the objective lens actuator drive circuit 218.

10) Information storage medium (optical disk) 20
The "optimal light amount during reproduction" and the "optimal light amount during recording / erasing" recorded in the inner peripheral portion of No. 1 are reproduced, and the information is recorded in the semiconductor memory 219 via the control unit 220.

11) Further, the control section 220 sends a signal according to the "optimum light amount during reproduction" to the recording / reproducing / erasing control waveform generating circuit 206 to reset the light emission amount of the semiconductor laser element during reproduction.

12) The light emission amount of the semiconductor laser element at the time of recording / erasing is set in accordance with the "optimum amount of light at the time of recording / erasing" recorded in the information storage medium 201.

(22D-2) Access control (22D-2-1) Reproduction of access destination information on information storage medium 201 Regarding what location and what information is recorded on the information storage medium 201 Information is the information storage medium 2
Information storage medium 20
1 * directory management area: recorded in the inner or outer area of the information storage medium 201. Or * Navigation Pack: MPEG2 PS (Program
VOBS (Video that conforms to the data structure of Stream)
Object Set), and information about where the next video is recorded is recorded. Etc.

When it is desired to reproduce or record / erase specific information, the information in the above area is first reproduced, and the access destination is determined from the information obtained there.

(22D-2-2) The coarse access control controller 220 calculates the radial position of the access destination,
The distance from the current position of the optical head 202 is calculated.

Speed curve information that can reach the moving distance of the optical head 202 in the shortest time is recorded in advance in the semiconductor memory 219. The control unit 220 reads the information and controls the movement of the optical head 202 according to the velocity curve by the following method.

After the controller 220 issues a command to the objective lens actuator drive circuit 218 to turn off the track loop, the feed motor drive circuit 216 is controlled to start the movement of the optical head 202.

When the focused spot crosses the track on the information storage medium 201, a track error detection signal is generated in the focus / track error detection circuit 217. Using this track error detection signal, the relative speed of the focused spot with respect to the information storage medium 201 can be detected.

The feed motor drive circuit 216 calculates the difference between the relative speed of the focused spot obtained from the focus / track error detection circuit 217 and the target speed information sent from the control unit 220 one by one, and the result is calculated by the optical head. The optical head 202 is moved while feeding back the drive current to the drive mechanism (feed motor) 203.

As described in "(22B-3] Optical head moving mechanism", a frictional force always acts between the guide shaft and the bush or the bearing.
When 2 is moving at high speed, dynamic friction works, but static friction works because the moving speed of the optical head 202 is slow at the start and immediately before stopping. At this time, since the relative frictional force is increasing (especially immediately before stopping), the optical head drive mechanism (feed motor) 20 is responsive to a command from the control unit 220.
The amplification factor (gain) of the electric current supplied to 3 is increased.

(22D-2-3) Dense access control When the optical head 202 reaches the target position, the controller 220
Outputs a command to the objective lens actuator drive circuit 218 to turn on the track loop.

The focused spot reproduces the address or track number of that portion while tracing along the track on the information storage medium 201.

The current focus spot position is calculated from the address or track number there, the error track number from the target position to be reached is calculated in the control unit 220, and the number of tracks required to move the focus spot is determined by the objective lens actuator. The drive circuit 218 is notified.

Objective lens actuator drive circuit 21
When one set of kick pulses is generated within 8, the objective lens slightly moves in the radial direction of the information storage medium 201, and the focused spot moves to the adjacent track.

Objective lens actuator drive circuit 21
In 8, the track loop is temporarily turned off, a number of kick pulses are generated according to the information from the control unit 220, and then the track loop is turned on again.

After the end of the dense access, the control unit 220 reproduces the information (address or track number) of the position traced by the focused spot, and confirms that the target track is being accessed.

(22D-3) Continuous Recording / Reproduction / Erase Control As shown in FIG. 20, the track error detection signal output from the focus / track error detection circuit 217 is input to the feed motor drive circuit 216. The control unit 220 controls the feed motor drive circuit 216 so that the track error detection signal is not used during the "start control" and the "access control".

After confirming that the focused spot has reached the target track by the access, a part of the track error detection signal is transmitted via the motor drive circuit 216 by the command from the control section 220 to the optical head drive mechanism (feed motor). ) 203 as a drive current. This control is continued during the period of continuous reproduction or recording / erasing processing.

The center position of the information storage medium 201 is mounted with an eccentricity slightly deviated from the center position of the rotary table 221. When a part of the track error detection signal is supplied as the drive current, the optical head 202 is adjusted to the eccentricity.
The whole moves slightly.

When reproducing or recording / erasing processing is continuously performed for a long time, the focused spot position gradually moves in the outer peripheral direction or the inner peripheral direction. When a part of the track error detection signal is supplied as a drive current to the optical head moving mechanism (feed motor) 203, the optical head 202 gradually moves in the outer peripheral direction or the inner peripheral direction in accordance with it.

In this way, it is possible to reduce the burden of correcting the track deviation of the objective lens actuator and stabilize the track loop.

(22D-4) Termination Control When a series of processing is completed and the operation is terminated, the processing is performed according to the following procedure.

1) The control unit 220 sets a track loop to the objective lens actuator drive circuit 218.
A command to FF is issued.

2) The control unit 220 issues a command to the objective lens actuator drive circuit 218 to turn off the focus loop.

3) The control unit 220 issues a command to the recording / reproducing / erasing control waveform generating circuit 206 to stop the light emission of the semiconductor laser device.

4) Spindle motor drive circuit 215
To 0 is notified as a reference rotation speed.

(22E) Flow of recording signal / reproduction signal to information storage medium (22E-1) Signal format recorded on information storage medium 201 Signals recorded on information storage medium 201 Information storage medium 201 It is possible to correct the recorded information error due to the above defect. * The reproduction processing circuit is simplified by setting the direct current component of the reproduction signal to 0. * When the information is recorded on the information storage medium 201 as densely as possible. In order to satisfy the above requirement, the information recording / reproducing unit (physical system block) "adds an error correction function" as shown in FIG.
"Signal conversion (recording modulation / demodulation) for recorded information" is performed.

(22E-2) Signal flow during recording (22E-2-1) ECC (Error Correction Code)
Information to be recorded in the additional processing information storage medium 201 is a raw signal in the form of a recording signal d, which is a data input / output interface unit 22.
Entered in 2. The recording signal d is recorded in the semiconductor memory 219 as it is, and then the ECC encoding circuit 208 executes the ECC adding process as follows.

An embodiment of the ECC adding method using the product code will be described below.

The recording signal d is 1 in the semiconductor memory 219.
One line is arranged every 72 bytes, and a set of 192 lines is a set of E
CC block. This "row: 172 x column: 192 Byte"
For a raw signal (recording signal d) in a set of ECC blocks composed of s ″, an inner code PI of 10 Bytes is calculated for each row of 172 Bytes and additionally recorded in the semiconductor memory 219. Further, Bytes unit The outer code PO of 16 Bytes is calculated for each column, and additionally recorded in the semiconductor memory 219.

As an example of recording on the information storage medium 201, a total of 2366 bytes (12366 = (12 + 1) × (172 + 10)) of 12 lines including the inner code PI and one line for the outer code PO is used as a unit of the information storage medium. Record within one sector.

When the addition of the inner code PI and the outer code PO is completed in the ECC encoding circuit 208, a signal of 2366 bytes for one sector is read from the semiconductor memory 219 and transferred to the modulation circuit 207.

(22E-2-2) Signal Modulation Since the direct current component (DSV: Disital Sum Value) of the reproduction signal is brought close to 0 and information is recorded at high density on the information storage medium 201, the signal format is converted. A certain signal modulation is performed in the modulation circuit 207.

The modulation circuit 207 and the demodulation circuit 210 have a conversion table showing the relationship between the original signal and the modulated signal. The signal transferred from the ECC encoding circuit 208 is divided into a plurality of bits according to the modulation method, and is converted into another signal (code) while referring to the conversion table.

For example, 8/16 modulation (R
When the LL (2,10) code is used, there are two types of conversion tables, and the modulated DC component (DSV: Disita
l The conversion table for reference is switched one by one so that SumValue) approaches 0.

(22E-2-3) Recording Waveform Generating Information When recording marks on the information recording medium (optical disk) 201, generally, as a recording method, * mark length recording method: the front end position and the rear terminal position of the record mark. "1" comes to. * Mark-to-mark recording method: Center position of recording mark is "1"
Match the position of. There are two types.

When mark length recording is performed, it is necessary to form long recording marks. In this case, if the amount of recording light is continuously irradiated for a certain period, a "raindrop" -shaped recording mark having a wide width only at the rear portion is formed due to the heat storage effect of the light reflective recording film of the information storage medium 201. To eliminate this harmful effect,
When a long recording mark is formed, it is divided into a plurality of recording pulses or the recording waveform is changed stepwise.

Recording / reproducing / erasing control waveform generating circuit 206
In the inside, the above-mentioned recording waveform is created according to the recording signal sent from the modulation circuit 207 and is transmitted to the semiconductor laser driving circuit 205.

(22E-3) Signal flow during reproduction (22E-3-1) Binarization / PLL circuit Information storage medium as described in "(22B-1-1) Signal detection by optical head 202" (Optical disk) 20
The signal on the information storage medium 201 is reproduced by detecting the change in the amount of reflected light from the light reflecting film or the light reflecting recording film of No. 1.
The signal obtained by the amplifier 213 has an analog waveform. The binarization circuit 212 converts the signal into a binary digital signal composed of "1" and "0" using a comparator.

From the reproduced signal obtained from this, the PLL circuit 211 extracts the reference signal for reproducing information. PL
The L circuit 211 has a built-in frequency variable oscillator. The frequency and phase of the pulse signal (reference clock) output from the oscillator and the output signal of the binarization circuit 212 are compared, and the result is fed back to the oscillator output.

(22E-3-2) Demodulation of Signal The demodulation circuit 210 has a conversion table showing the relationship between the modulated signal and the demodulated signal. The signal is returned to the original signal while referring to the conversion table in accordance with the reference clock obtained by the PLL circuit 211. The returned (demodulated) signal is recorded in the semiconductor memory 219.

(22E-3-3) Error Correction Processing The error correction circuit 209 detects an error point in the signal stored in the semiconductor memory 219 by using the inner code PI and the outer code PO, and the pointer flag of the error point is detected. Stand up.

Thereafter, while reading the signal from the semiconductor memory 219, the signal at the error position is successively corrected according to the error pointer flag, and the inner code PI and the outer code PO are removed and transferred to the data input / output interface section 222.

The signal input from the ECC encoding circuit 208 is transferred to the data input / output interface unit 2
It is output from 22 as a reproduction signal c.

Next, each operation of the information recording / reproducing apparatus for video information recording (video recorder) will be described with reference to the flowchart.

The following describes the procedure for recording a plurality of still images on the information storage medium with reference to FIG. 1 and continuously inputs data of still image files from the digital camera 1543 (ST1).

Since the still image file from the digital camera 1543 is generally recorded in the JPEG format or the bitmap format, the input still image information is converted into I-Picture data of MPEG2 by the V encoder 1553 (ST2). . Next, the formatter 1556 creates a VOBU structure having a data structure as shown in FIG. 3 for one piece of still image information, and forms a VOB by grouping (grouping) a plurality of still images (S).
T3).

In parallel with the above processing, the information recording / reproducing unit 101
Then, all Control Information 1011 information recorded in the information storage medium (optical disk) 201 is reproduced, and the information is stored in the RAM section in the system control section 1530 (S
T4). In the system control unit 1530, from the Control Information 1011 information stored in the RAM unit, Alloca
Search for information in tion Map Table 1105, and unrecorded area 146
Search for 0 place (ST5).

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

At the time of recording, the system control unit 1530 monitors the recording status, and the information storage medium (optical disk) 201
It is determined whether the recording of the VOB in the record is successful. (ST7) If a trouble occurs on the way, ST4 to ST6
The process of is repeated.

V to Information Storage Medium (Optical Disk) 201
If the OB recording is successful, the VOBU Map 1738 (or VOB Map 1899) is created in the system control unit 1530 based on the address information recorded in the information storage medium (optical disk) 201 (ST9). Finally, the VOBU M created in the system control unit 1530
The ap1738 (or VOB Map1899) information is additionally recorded in the Control Information 1011 on the information storage medium (optical disc) 201 using the information recording / reproducing unit 101 (ST10).

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

As in steps ST4 and ST5 in FIG. 1, first, the information recording / reproducing unit 101 performs the information storage medium (optical disk) 20.
All Control Information 1011 information recorded in 1 is reproduced, and the information is stored in the RAM in the system control unit 1530.
It is stored in a copy (ST11). Next, the system control unit 153
0 Control Information 1 saved in RAM inside
011 Playback Control Information 1
The information of 021 is searched and the information regarding the reproducing method is interpreted (ST12). After that, inside the system control unit 1530, the PGC Control Informati stored in the RAM unit is stored.
The program of the information to be reproduced is searched from among on 1103, and the Cell included in the PGC information is extracted. Next, Cell Playback Info saved in RAM
V specified by the applicable Cell from rmation1108
OB_ID or PTT_ID is extracted (ST1
3). Furthermore, inside the system control unit 1530, the Par in the Video Object Information 1107 or Video Title Set Information 1106 stored in the RAM is stored.
t_of_ Titles Information V you want to play from 1753
The address on the Optical Disk 1001 recorded by the OB is extracted (ST14). At the time of reproduction, a reproduction procedure for reproducing still image information itself from VOB # A as shown in FIG. 14 and superimposing and displaying audio information recorded in VOB # B will be described. The VO recorded on the information storage medium (optical disk) 201 by accessing the optical head 202 in the information recording / reproducing unit 101 based on the control signal from the system control unit 1530.
The information of B # B is reproduced, and at the same time, the audio information of a plurality of still images is temporarily stored in the memory 1563 (ST15). Next, information storage medium (optical disk) 201
The optical head 202 in the information recording / reproducing unit 101 is accessed to the information recording position of VOB # A recorded above,
The still image information in VOB # A is reproduced (ST16).
Finally, the AV output 1546 outputs (displays) the audio information in VOB # B and the still image information in VOB # A at the same time.
(ST17).

As described above, either the audio information of 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 information is stored. By performing a method of collectively reproducing and outputting (displaying) at the same time, the access frequency of the optical head 202 can be significantly reduced as compared with a method of reproducing still image information and audio information for each piece of still image information each time. ,
As a result, a great feature of the present invention is that seamless continuous output (no temporary stop at a display transition of a still image or interruption of audio information) is possible.
Therefore, in FIG. 22, after the audio information of VOB # B is reproduced,
Although the still image information of VOB # A is reproduced, changes (for example, the reproduction order is changed) are possible within the scope of the gist of the present invention. In FIG. 10, the recording format is such that still image information and audio information are stored as a pair in VOBU. However, the present invention is not limited to this, and the present invention is applicable in a situation where the gist of the invention is implemented. For example, in the case of a recording format in which a plurality of V_PCKs are collectively arranged in the first half of 1 VOB or 1 PTT and a plurality of A_PCKs are collectively arranged in the second half, the information storage medium (optical disk) 20
On 1 the V_PCK and A_PC of the still image with the same number
The positions between K are far apart. Therefore, still image information (V_PCK information) with the same still image number in the same VOB
Even when the audio information (V_PCK information) is sequentially reproduced, the access processing of the optical head 202 is necessary. Therefore, as described above, from the Picture Objects 1013 having a recording format in which the V_PCKs for a plurality of sheets are collectively arranged in the first half of 1 VOB or 1 PTT and the A_PCKs for a plurality of sheets are collectively arranged in the second half. When reproducing a plurality of pieces of still image information, according to the procedure of the present invention, one of the V_PCK information and the V_PCK information is read in advance for a plurality of sheets and stored in the memory 1563, and then the remaining information is collected. It can be played back and output (displayed) at the same time.

As another embodiment of the present invention, a method of additionally recording additional information for a still image by after recording will be described. The additional information by after-recording is in a 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. Figure 22 up to ST14
Go through the same procedure. The optical head 202 in the information recording / reproducing unit 101 is based on the control signal from the system control unit 1530.
Is accessed to reproduce VOB information recorded on the information storage medium (optical disk) 201, and output the AV output 15
It is displayed at 46 as shown in FIG. 11 (ST18). Next, the user inputs additional information while looking at the display screen, and based on the input information, the formatter 1556 groups a plurality of still images to form a VOB or PTT (ST19). VOB created by formatter 1556
Information is recorded on the information storage medium (optical disk) 201 (ST20).

Next, the characteristic parts of the present invention will be described collectively.

*] 1VOB is a plurality of still image information, or 1PTT is a plurality of still image information.

*] One VOB is a device for continuously recording at least two pieces of still image information in a vacant area when recording a plurality of still images.

*] Cell information can specify a plurality of continuous still image information.

The above three effects of * are common.

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 perform processing by grouping a plurality of data and recording the data on the optical disk, and the transfer time is shorter.

A high performance digital camera can record thousands or tens of thousands of still images. If VOB information is created by constructing a VOB for each still image, the management information becomes enormous. The management information can be greatly reduced by the method of the present invention.

Further, in the digital camera, since the still image information for each image is in a separate file, the management search is complicated. According to the present invention, management and retrieval are facilitated because grouping is performed for every plural sheets.

In the digital camera, since the still image information for each image is a separate file, the contents of the still image could not be confirmed without opening each file. According to the present invention, by grouping every plural sheets, FIG.
Photographic positive film (or negative film) like 1.
The user can check the contents as easily as viewing.

Further, the video information over a plurality of video frames is recorded in VOB units. By recording a plurality of still image information in VOB units, video information and still image information can be handled in the same layer, and for example, a cell of video information and a cell of still image information can be mixedly arranged in one PGC. Information and still image information can be mixedly displayed, increasing the range of expression.

*] In the present invention, there is a VOBU Map or VOB Map.

*] Information recording / reproducing apparatus for recording VOBU Map or VOB Map> The above two effects of * are common.

Information such as recording address for each still image is recorded. It is possible to directly access the still image to be viewed using VOBU Map or VOB Map, and access for displaying multiple still images. The speed is significantly increased.

When a plurality of still images are continuously displayed, the PTM and SCR information can be used for seamless display (continuous joints between still images).

Furthermore, the still image itself is recorded.
Since the start addresses of V_PCK and A_PCK in which voice information is recorded are described separately, high-speed access becomes easy when only still image information or only voice information is desired to be reproduced. As a result, when the voice information in a specific VOB is used for displaying a still image of another VOB in a multiple manner, seamless display is possible (because only voice information can be accessed at high speed).

*] In the present invention, the object designated by Cell Information is an individual still image in the VOB. Therefore, since each still image itself can be specified at the time of reproduction, access can be performed at high speed (using VOBU Map or VOB Map), and seamless display is possible when a plurality of still images are sequentially displayed.

Also, since individual still images can be specified 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. 11 is simple. Becomes

*] In the present invention, different VOB still image information can be multi-designated in Cell Information.

For this reason, the continuous voice information in one VOB can be used when another VOB is displayed, which gives a wide range of expression methods.

Furthermore, since continuous audio information in one VOB can be used when another VOB is displayed, data can be shared and the information storage medium (Optical Disk 1001) can be used.
Space saving of the amount of data recorded in can be promoted. As a result, one information storage medium (Optical Disk 1001)
The actual recordable amount per hit is greatly increased.

For the video information that has already been recorded,
Corresponding Video Object Information for Picture Objects without processing Video Objects 1012 itself.
You can combine existing video information as still image information and use it by simply creating.

*] In the present invention, Cell Info. Is reproduced and a still image is reproduced using VOBI.

[0284] For this reason, Picture Objects 1013 is Video Object Information for Pictu which is management information of contents.
Re Objects independently Cell Playback Information fo
Since r Picture Objects can be set, the playback order can be specified regardless of the order in which still images are recorded on the information storage medium (Optical Disk 1001), and the degree of freedom in expression is dramatically improved.

*] The present invention is an apparatus for reading still image information or audio information from a memory and reproducing both of them at the same time.

When multiple pieces of still image information in different VOBs are designated, or when only the audio information of a plurality of still images is collectively recorded in another area, V_PCK and SP_PCK are obtained for each still image. , A_PCK are sequentially reproduced, the access frequency becomes very high, and when a plurality of still images are sequentially displayed (optical head 20
Continuous display becomes difficult (under the influence of access latency of 2).

On the other hand, V_PCK, SP_PCK,
At least two pieces of information for one of A_PCK are reproduced at a time, and temporarily stored in the memory 1563,
The optical head 202 can be displayed simultaneously when reproducing the remaining information.
The access frequency of is greatly reduced, and continuous display becomes easier.

*] The present invention is an after-recording recording apparatus for collectively recording additional information to an already recorded still image.

For example, when still image information taken by a digital camera having no voice input function is recorded as it is on the information storage medium (Optical Disk 1001), the recording result is A_PCK (Audio Pack) as shown in FIG. 10 (c3).
) Is not included in the structure. Play that information,
As shown in Fig. 11, while displaying on the screen, you can add commentary and comments to each one by methods such as "voice input by microphone", "overwriting of marks by handwriting", "addition of text information by key-in", etc. Think In this case, the recording format is A_PCK in FIG. 10 (c3).
From the structure that does not include A_PC
If an attempt is made to change the structure to include K, the process of re-recording on the information storage medium (Optical Disk 1001) will occur, the process will be troublesome, and the processing time will be significantly increased. On the other hand, A_ shown in FIG. 10 (c3)
Without modifying the data that does not include the PCK (Audio Pack), only the additional information is shown in a separate
OB 1634 as an information storage medium (Optical Disk
1001) makes it possible to add information later to a still image very easily and in a short time.

The characteristic points included in this system will be described more specifically.

According to the present invention, in an information storage medium capable of recording and reproducing at least still image information, a first information unit [VOBU1641] having one piece of still image information.
˜1649] and a first group unit [VOB1632 to 1634 or PTT] having a plurality of still image information of different contents configured by the aggregate of the first information units.
1407, 1408], and information is recorded in the first group unit, and a plurality of still images are continuously recorded.

Here, the above-mentioned still image information is video information [V_PCK1664, etc.] and sub-picture information [SP_PCK].
1682], voice information [A_PCK1693 etc.]
Of these, at least one is included.

The first information unit is VOBU (Video
Object Unit) or VOB (Video Object), and the first group unit is VOB (Video Object) or PTT (Pa).
rt_of_Title).

The apparatus of the present invention is an information recording / reproducing apparatus capable of recording / reproducing still image information to / from an information storage medium, in the unrecorded area [unrecorded area 14
60] to search for unrecorded area [system controller 153
0] and a grouping unit [formatter 1] of a plurality of still images for grouping a plurality of input still image information.
556] and an information recording / reproducing section [information recording / reproducing section 101] for recording the plurality of still image information grouped in the unrecorded area on the information storage medium detected by the unrecorded area detection section on the information storage medium. ], And at least two pieces of still image information [for example, VOBU 1642 and 1643] out of a plurality of grouped still image information within adjacent areas [for example, the same E
xtent # δ 1474 is subsequently recorded].

The recording medium of the present invention is an information storage medium capable of recording and reproducing at least still image information, and manages the first recording area [Picture Objects 1013] for recording the still image information itself and the still image. A second recording area for recording information [Control Information
In the information storage medium [Optical Disk 1001] having a plurality of different contents formed by a first information unit [VOBU1641 to 1650] having one piece of still image information and a group of the first information units. The first group unit [VOB1632-1 having the still image information of
634 to PTT 1407, 1408] and the still image information is the first group unit.
Of the map information [VOBUMap for Picture Objects 1 which has been recorded in the recording area of the first information unit and in which management information relating to the still image information for each image related to the first information unit is recorded.
738 or VOB Map for Picture Objects 1899
] Multiple still images are recorded in succession.

The device of the present invention is a device for reproducing an information storage medium capable of recording and reproducing at least still image information, and includes a first recording area [Picture Objects 1013] for recording still image information itself and a still image information. A second recording area [Control Infor] for recording management information about the image
[1010]], in an information recording / reproducing apparatus for recording still image information and management information related to still images in an information storage medium having a location [unrecorded area 1460] on the information storage medium. The recording area detection unit [system control unit 1530] to be detected and the first information unit [VOBU164] having one still image information.
1-1649] are collected into a first group unit [VO
B1632-1634 or PTT1407, 140
8] forming a grouping part [formatter 155]
6], and an information recording / reproducing section [information recording / reproducing section 101] for recording the grouped first group unit on the information storage medium extracted by the recording area detecting section,
The management information creation unit [system control unit 1530] for creating management information [VOBU Map for Picture Objects 1738 or VOB Map for Picture Objects 1899] related to each still image information in the first group unit and the management information creation unit. The management information relating to each created still image information is stored in the second recording area [Control Informa
section 1011] and a management information recording section [information recording / reproducing section 101].

Further, the recording medium of the present invention is an information storage medium capable of recording and reproducing at least still image information, and has a first recording area [Picture Objects 1012] for recording still image information itself and management information. Has a second recording area [ControlInformation 1011] for recording
Further, in the second recording area, a first control information recording area [V is recorded in which information about a recording state of the still image information recorded in the first management area on the information storage medium is recorded.
information object 1107] and a second control information recording area [Playback Control Information 1021] in which information about a reproducing method when reproducing still image information recorded in the first recording area is recorded. In the medium, in the second control information recording area, the minimum unit information [Cell Pla
yback Information 1108] is recorded,
Specify the still image itself to be played by the above minimum unit information
[The still image number 1875 in the VOB recorded in the Video Pack of the first still image in the Cell, Cel
Still image number 1876 or Cel in VOB recorded by Video Pack of the last still image in l
The still image number 1885 in the PTT recorded in the Video Pack of the first still image in l and the still image number 1886 in the PTT recorded in the Video Pack of the last still image in Cell] It is characterized by

Here, the second control information recording area [P
The minimum unit information [Cell Playback Information 1108] recorded in the layback Control Information1021]
It has a structure for designating more than one still image information recorded more continuously [by designating the first and last still image numbers in the cell, it is possible to designate more than one still image information between them]. To do.

Further, the recording medium of the present invention is an information storage medium capable of recording and reproducing at least still image information, and has a first information unit [V
OBU 1641 to 1649] and a first group unit [VOB1632 to 163] including still image information of a plurality of different contents, which is composed of an aggregate of the first information units.
4 to PTT 1407, 1408], a plurality of still image information is recorded in the first recording area [Video Objects 1012], and further, information on the recording state recorded in the first group unit [Video Object Information 11].
07] is the first control information recording area [Control Infor
mation1011].

Then, the second control information recording area [P
[Layback Control Information1021], the minimum unit information [Cell P that reproduces the above still image information].
layback Information 1108], the first group [VOB1632 to 163] recorded in the first control information recording area [VideoObject Information 1107].
4 to PTT 1407, 1408] still images [still image numbers 1875, 1876, 1885, 188]
[6] is specified to reproduce still image information, and
Still image position [still image number j: VOBU1828, still image number h + j] in a second group [VOB # B1822] different from the first group [VOB # A1821] recorded in the control information recording area of -2: V
OBU1829] is designated to reproduce audio information or sub-picture information at the same time.

The reproducing apparatus of the present invention has the information reproducing means [information recording / reproducing section 101] and the information displaying means [recording / reproducing recorder displaying section 1548], and the information reproducing means [information recording / reproducing section 101] is the second one. Control information recording area [Playback Con
control information 1021] is reproduced, and then the first control information recording area [Video Object Information110] is reproduced based on the above reproduction result.
[7] The information about the recording state on the information storage medium is reproduced, and then the still image information recorded in the first recording area [Picture Objects 1013] is reproduced based on the above reproduction result. At the same time, the reproduction information is displayed by the information display means [AV output 1546].

Further, in the reproducing apparatus of the present invention, a plurality of still image information is grouped by [VOB # A1821, VO].
B # B1822] and the still image information is video information [V_PCK1852, 1854], sub-picture information [SP_PCK1848], audio information [A_PCK1].
865, 1866] to at least two of the information storage media including at least one of them [still image number 2 and still image number 3 (not shown) or still image number j And (not shown)
Still image number j + 1] or more, a reproducing section [information recording / reproducing section 101] for collectively reproducing, a storage section [memory 1563] for temporarily storing information reproduced by the reproducing section, video information [V_PCK1852, 1854], sub-picture Information [SP
_PCK1848], voice information [A_PCK1865, 1
866] and a display unit for reproducing the remaining information not recorded in the storage unit in the reproduction unit [information recording / reproduction unit 101] and simultaneously displaying the reproduced information and the information recorded in the storage unit. [AV output 1546] is provided.

Further, the after-recording recording apparatus of the present invention is
A first information unit [VOBU1 having one piece of still image information
641 to 1649] and a first group unit [VOB1632 to 1634 to PTT1407, 1408] having a plurality of still image information of different contents, which is configured by the aggregate of the first information units, and the first
For each information storage medium in which a plurality of still images are continuously recorded, which is characterized in that information is recorded in group units of still image information [VOBU1825-
1827] additional information input means [AV input 1542 → ADC 1552 / A encoder 1554]
Alternatively, an SP encoder 1555], a temporary recording unit [temporary storage unit 1534] for temporarily recording additional information added to each piece of still image information, and additional information added to each piece of still image information In contrast to the first group unit [VOB1632 to 1634 to PTT140]
7, 1408] and additional information synthesizing means [formatter 1556 and data processor 1536],
An information recording unit [information recording / reproducing unit 101] is provided for collectively recording the combined information created by the additional information combining unit on an information storage medium.

[0304]

As described above, according to the present invention,
A) A plurality of recording formats and management information are secured between the DVDVideo disc and a general video method in a recordable and reproducible DVD disc with some compatibility and continuity, while ensuring data consistency and continuity of management information. We were able to obtain the recording format and the data structure of management information for handling the still image information, and the method that made it possible. In addition, B) a recording format and a data structure of management information for facilitating management / retrieval of a plurality of recorded still image information, and a method enabling the same were obtained. Furthermore, C) By enabling high-speed access to the information storage medium in which a plurality of still image information is recorded, a plurality of still image information can be continuously displayed without interruption (continuity at the time of reproduction). It was possible to obtain the information reproducing device for.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a data structure on an information recording medium according to the present invention.

FIG. 2 is an explanatory diagram of a directory structure of data files in a data area.

FIG. 3 is an explanatory diagram of a data structure in an AV file.

FIG. 4 is an explanatory diagram of recording locations of video objects along an array on an information storage medium.

FIG. 5 is an explanatory diagram of a data structure in an allocation map table.

FIG. 6 is an explanatory diagram of a data structure in program chain control information.

FIG. 7 is an explanatory diagram of a video information reproduction example using PGC.

FIG. 8 is an explanatory diagram of a data structure in VTSI.

FIG. 9 is an explanatory diagram of a VOB array order according to VOBI.

FIG. 10 is an explanatory diagram of a picture object / audio object recording format.

FIG. 11 is a diagram showing an example of a display screen for a picture object data structure.

FIG. 12 is an explanatory diagram of a data structure in video object information.

FIG. 13 is an explanatory diagram of a data structure of VOBU in a picture object.

FIG. 14 is an explanatory diagram of the relationship between the data structure in a VOB placed in a continuous still image sequence and the designated contents of the corresponding cell.

FIG. 15 is an explanatory diagram of a data structure in cell reproduction information of a picture object.

FIG. 16 is an explanatory diagram of another data structure in the cell reproduction information of the picture object.

FIG. 17 is an explanatory diagram of a data structure in part of title information regarding a still image.

FIG. 18 is an explanatory diagram of a data structure in a VOB map of a picture object.

FIG. 19 is an explanatory diagram of a block configuration in the video decoder.

FIG. 20 is an explanatory diagram of a physical block configuration of the information recording / reproducing apparatus.

FIG. 21 is an explanatory diagram of a procedure of recording a plurality of still images on an information recording medium.

FIG. 22 is an explanatory diagram of a reproduction procedure of still image information from the information recording medium.

FIG. 23 is an explanatory diagram of a recording procedure of additional information by after recording.

[Explanation of symbols]

201 ... Information recording medium, 101 ... Information recording / reproducing unit, 15
00 ... Disc changer section, 1530 ... System control section, 1534 ... Temporary storage section, 1536 ... Data processor, 1538 ... STC section, 1542 ... AV input section, 1
543 ... Digital camera, 1544 ... TV tuner, 1
548 ... Recording / playback recorder display section, 1552 ... Analog-digital converter, 1553 ... Video encoder, 1554
... audio encoder, 1555 ... sub-picture encoder, 1556 ... formatter, 1557 ... buffer memory, 1562 ... separator, 1563 ... memory, 1
564 ... Video decoder, 1565 ... Sub-picture decoder,
1567 ... Video-to-digital converter, 1568 ...
Audio decoder, 1569 ... Audio digital-analog converter.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinichi Kikuchi 3-3-9 Shimbashi, Minato-ku, Tokyo Inside Toshiba Abu E Co., Ltd. (72) Inventor Kazuhiko Hirara 3-3 Shimbashi, Minato-ku, Tokyo No. 9 within Toshiba Abu E., Ltd. (56) Reference JP 2000-4421 (JP, A) JP 2000-67524 (JP, A) JP 2000-83217 (JP, A) (58) ) Fields surveyed (Int.Cl. ⁷ , DB name) H04N 5/85 H04N 5/91-5/956 G11B 20/10-20/12 G11B 27/00

Claims (3)

(57) [Claims] 1. A first recording area in which video information can be recorded, a second recording area in which a still image can be recorded, and a third recording area in which management information about the video information and the still image is recorded. In the optical disc capable of holding the video information and the second information stored in the first recording area.
The plurality of still images recorded in the recording area can be recorded in units of video objects, and the video information stored in the first recording area or the plurality of still images recorded in the second recording area. Cell that specifies the playback range of P, and P that indicates the playback procedure by the cell
GC is defined, and the PG is stored in the third recording area.
PGC information regarding C and information regarding the cell are recorded, and in the information regarding the cell, a still image number that identifies the still image at the start and end of reproduction in the cell is recorded, and further, the third recording area. , A plurality of PGCs can be set, cells in the different PGCs can specify an arbitrary section including the same portion in the VOB, and a video object of video information and a video object of a still image are mixed. The optical disc is capable of performing sequence reproduction by means of sequence reproduction, and has identification information indicating whether the cell is a cell relating to video information in the first recording area or a cell relating to a still image in the second recording area. 2. A first recording area in which video information can be recorded, a second recording area in which a still image can be recorded, and a third recording area in which management information about the video information and the still image is recorded. A reproducing method for reproducing information from an optical disc capable of holding the video information stored in the first recording area and the second information.
The plurality of still images recorded in the recording area can be recorded in units of video objects, and the video information stored in the first recording area or the plurality of still images recorded in the second recording area. Cell that specifies the playback range of P, and P that indicates the playback procedure by the cell
GC is defined, and the PG is stored in the third recording area.
PGC information regarding C and information regarding the cell are recorded, and in the information regarding the cell, a still image number that identifies the still image at the start and end of reproduction in the cell is recorded, and further, the third recording area. , A plurality of PGCs can be set, cells in the different PGCs can specify an arbitrary section including the same portion in the VOB, and a video object of video information and a video object of a still image are mixed. Sequence reproduction is possible, and the cell has identification information indicating whether the cell is a cell related to video information in the first recording area or a cell related to a still image in the second recording area. A reproducing method characterized by reproducing a still image. 3. A first recording area in which video information can be recorded, a second recording area in which a still image can be recorded, and a third recording area in which management information about the video information and the still image is recorded. A method for recording information on an optical disc, which is capable of holding information, including video information stored in the first recording area and the second information.
The plurality of still images recorded in the recording area can be recorded in units of video objects, and the video information stored in the first recording area or the plurality of still images recorded in the second recording area. Cell that specifies the playback range of P, and P that indicates the playback procedure by the cell
GC is defined, and the PG is stored in the third recording area.
PGC information regarding C and information regarding the cell are recorded, and in the information regarding the cell, a still image number that identifies the still image at the start and end of reproduction in the cell is recorded, and further, the third recording area. , A plurality of PGCs can be set, cells in the different PGCs can specify an arbitrary section including the same portion in the VOB, and a video object of video information and a video object of a still image are mixed. Sequence reproduction is possible, and identification information indicating whether the cell is a cell relating to video information in the first recording area or a cell relating to a still image in the second recording area is recorded in the third recording area. Recording method characterized by.