JP2002163865A - Digital information medium, digital information recording regenerating device, and digital information processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to insert an entry point (a bookmark) at a random recording part of speech like inserting the bookmark in a book. SOLUTION: Information RTR VMG managing recorded objects includes cell entry point information M C EPI. The entry point information includes text information PRM TXTI about the entry point. The text information is designated to store the text information about the entry point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an apparatus / method capable of real-time digital recording of video images, audio information, and the like, and a digital information medium used therein.

In particular, a special information storage area is provided on a recordable / reproducible DVD disk (DVD-RAM disk, etc.), and the information stored in this area is appropriately used to reproduce / delete a recorded program. Apparatus for convenience /
Methods and media.

[0003]

2. Description of the Related Art At present, MPEG (moving picture expert group 2) system is used for digital recording / reproduction of video (moving picture image), and AC-3 (digital audio compression 3) is used for digital recording / reproduction of audio (sound). A DVD video standard using a system and the like has been put together, and various playback devices (DVD
Video player) is commercially available.

According to the DVD video standard, the moving picture compression method is MPEG
2. As for the audio recording method, besides linear PCM, AC-3
It supports audio and MPEG audio. The DVD video standard also specifies sub-picture data for subtitles, navigation data for playback control such as fast-forward / rewind data search, and ISO 96 for computer compatibility.
60 and UDF bridge formats are also supported.

Further, a writable DVD disk (read-write writable DVD-RAM / DVD-RW or write-once DVD-R) has been developed, and digital video information is recorded using a writable DVD disk. The environment in which playback equipment (which replaces the conventional video cassette tape recorder) can be developed is being prepared.

[0006] Under the circumstances described above, DVD-RTRs are required for digital recording and reproduction of video images and the like in real time.
(DVD real-time recording) standards have been proposed and are being finalized as formal standards.

[0007]

However, as the recording capacity of the disc increases, the type and number of recorded program contents also tend to increase, and it becomes difficult for the user to grasp the recorded contents. . Therefore, a problem arises in the management of recorded disks.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object the purpose of, for example, reading a book while reading a book or any important portion such as an audio or the like as if a bookmark were placed between important places. It is an object of the present invention to provide an apparatus / method and a medium capable of writing and erasing a mark (entry point) at a recording location.

[0009]

In order to achieve the above object, a digital information medium according to an embodiment of the present invention has a volume space (28 in FIG. 2) including a management area (70) and a data area (DA). have.

The data area (DA) is configured so that data can be divided and stored in one or more objects (DA22 to DA24 in FIG. 2), and each of the objects (for example, DA22) has one or more data units (for example, DA22). (In FIG. 3, one or more VOBUs constitute a cell, and one or more cells constitute a object DA.
22), the data unit (VOB)
U) is configured so that audio information to be reproduced can be stored in one or more packs (for example, the audio pack in FIG. 3).

In the management area (70), management information for managing the objects (DA22 to DA24) (FIG. 5,
The management information (RTR_VMG) is configured to store the program chain information (ORG_P in FIG. 6) for designating the reproduction order of the objects.
GCI or UD_PGCIT; PGCI in FIG. 19 can be stored, and the program chain information (P
The GCI) can store one or more pieces of cell information (CI in FIG. 19).

In such an information recording medium (10 in FIG. 1), the cell information (CI) can store entry point information (for example, M_C_EPI in FIG. 25) for designating a reproduction position in an object. The entry point information (C_EPI) is configured to be able to store primary text information (PRM_TXTI) relating to an entry point (bookmark).

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings, the structure of a medium (DVD recording / reproducing disk) according to an embodiment of the present invention, and recording / reproduction of a DVD-RTR (DVD real-time recording) using this medium will be described. The configuration of the device (RTR video recorder) and various operations of the device will be described.

FIG. 1 is a view for explaining the structure of an optical disk 10 used in a DVD-RTR recording / reproducing apparatus. As shown, the optical disk 10 has a layer 1
A pair of transparent substrates 14 provided with 7A and 17B are
It has a structure in which it is bonded with an adhesive layer 20.

The disk 10 is a single-layer DVD-RAM
(Or DVD-RW) disc, the first information recording layer 17A is composed of a phase change recording layer,
B is composed of a dummy layer (which may also serve as a label of the disc).

This disc 10 is a DVD-R having two layers on one side.
In the case of an OM / RAM disk, the first information recording layer 17A is composed of a translucent film (such as a gold thin film) having pits formed thereon,
The information recording layer 17B is constituted by a phase change recording layer.

This disc 10 is a DVD-R having two layers on both sides.
In the case of an AM (or DVD-RW) disc, the first information recording layer 17A and the second information recording layer 17B are both formed of a phase change recording layer.

Each substrate 14 can be made of 0.6 mm thick polycarbonate, and the adhesive layer 20 is extremely thin (40 μm).
m to about 70 μm). The pair of 0.6 mm substrates 14 are
A large-capacity optical disk 10 having a thickness of 1.2 mm is obtained by laminating A and 17B such that they contact each other on the surface of the adhesive layer 20.

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

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

A lead-out area 26 is provided on the outer peripheral side of the information area 25. Further, a lead-in area 27 is provided on the inner peripheral side in contact with the clamp area 24.
Is provided. A data recording area 28 is defined between the lead-out area 26 and the lead-in area 27.

FIG. 1 also exemplifies the correspondence between the data recording area 28 of the optical disk 10 and the recording tracks of the data recorded thereon.

The recording layers 17A and 17 of the information area 25
In B, recording tracks are formed continuously in a spiral shape, for example. The continuous track is divided into a plurality of sectors, and these sectors are given serial numbers.
Various data are recorded on the optical disk 10 using this sector as a recording unit.

The data recording area 28 is an actual data recording area. As recording / reproducing information, video data (main video data) such as a movie, sub-video data such as subtitles / menus, and speech / sound effects are recorded. Audio data is recorded as a similar pit row (a physical shape or phase state that causes an optical change to the laser reflected light).

The optical disc 10 has a single-sided, single-layer, double-sided R
In the case of an AM disk, each of the recording layers 17A and 17B
Is a mixture of two zinc sulfide and silicon oxide (ZnS.S
iO2) and a phase change recording material layer (eg, Ge2Sb2T
e5) can be composed of three layers.

The optical disc 10 has a single-sided, single-layer, single-sided R
In the case of an AM disk, the recording layer 17 on the read surface 19 side
A can be constituted by a triple layer including the phase change recording material layer. In this case, the layer 17B disposed on the opposite side as viewed from the reading surface 19 does not need to be an information recording layer, but may be a simple dummy layer.

The optical disc 10 has a single-sided reading type two-layer R
In the case of an AM / ROM disk, the two recording layers 17A and 17B are composed of one phase-change recording layer 17B (back side when viewed from the reading surface 19; for reading and writing) and one translucent metal reflective layer 17A (from the reading surface 19). (Foreground side; playback only).

When the optical disk 10 is a write-once DVD-R, polycarbonate can be used as a substrate, gold can be used as a reflection film (not shown), and an ultraviolet curing resin can be used as a protection film (not shown). In this case, an organic dye is used for the recording layer 17A or 17B. Examples of the organic dye include cyanine, squarylium, croconic, triphenylmenthane dyes, xanthene, quinone dyes (naphthoquin, anthraquinone, etc.), and metal complex dyes (phthalocyanine, vorphyrin,
Dithiol complexes, etc.) and others are available.

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

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

When the optical disk 10 is a single-sided reading type (single or two recording layers), the substrate 14 on the back side as viewed from the reading surface 19 does not need to be transparent to the reading / writing laser. In this case, a label may be printed on the entire surface of the back substrate 14.

The DVD-RTR recording / reproducing machine described later is a DVD-RTR.
-Repeated recording / repeated reproduction (read / write) on RAM disk (or DVD-RW disk), one-time recording / repeated reproduction on DVD-R disk, DVD-RO
It can be configured to enable repetitive reproduction on the M disk.

If the disk 10 is a DVD-RAM (or D
In the case of VD-RW, the main body of the disk 10 can be housed in the cartridge 11 in order to protect the delicate disk surface.

When the DVD-RAM disk 10 is inserted into the disk drive of the DVD-RTR recording / reproducing apparatus together with the cartridge 11, the disk 10 is pulled out from the cartridge 11 and clamped on a turntable of a spindle motor (not shown), and a light (not shown). It is rotationally driven so as to face the head.

On the other hand, if the disc 10 is a DVD-R or D
In the case of a VD-ROM, the main body of the disk 10 is not stored in the cartridge 11, and the naked disk 10 is directly set on the disk tray of the disk drive.

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

The data recording area 28 is an actual data recording area in which management data, main video (video) data, sub-video data, and audio (audio) data are similarly recorded.

Although not shown, the data recording area 28 of the disk 10 can be divided into a plurality of recording areas (a plurality of recording zones) in a ring shape (annular ring shape). Although the angular velocity of the disk rotation differs for each recording zone, the linear velocity or the angular velocity can be kept constant in each zone. In this case, a spare recording area (free space) can be provided for each zone. The free space for each zone can be collected and used as a reserved area of the disk 10.

FIG. 2 is a view for explaining the hierarchical structure of information recorded on the optical disk of FIG.

In this structure, the lead-in area 27
Includes an emboss data zone having a light reflecting surface having an uneven shape, a mirror zone having a flat (mirror) surface, and a rewritable data zone in which information can be rewritten. The lead-out area 26 is also configured so that information can be rewritten.

Data recording area (volume space)
28 is composed of volume / file management information 70 and a data area DA which can be rewritten by the user.

The volume / file management information 70 includes
File information of the audio / video data recorded in the data area DA and information on the entire volume are recorded.

In the data area DA, areas DA1 and DA3 for recording computer data and an audio / video data area DA2 for recording video data / audio data and the like can be mixedly recorded. The recording order and the recording information size of the computer data and the audio / video data are arbitrary. It is possible to record only computer data or only audio / video data in the data area DA.

Audio / video data area DA2
Are control information DA21, video object DA22,
It includes a picture object DA23 and an audio object DA24.

The control information DA21 is recorded (recorded and / or
Or recording, playback, editing, search, and the like.

The video object DA22 can include information on the contents of the recorded video data.

The picture object DA23 can include still picture information such as a still picture and a slide picture.

The audio object DA24 can include information on the contents (contents) of the recorded audio data.

The video object DA22 is composed of a video object set VOBS. The VOBS has contents corresponding to one or more program chains PGC # 1 to #k, each of which specifies a cell reproduction order by a different method.

In the emboss data zone of the lead-in area 27, for example, the following information is recorded in advance: (1) DVD-ROM, DVD-RAM (or DVD)
-RW), disc type such as DVD-R; 12 cm,
Disc size such as 8 cm; recording density; physical sector number indicating recording start / end position, and other information on the entire information storage medium; (2) recording power and recording pulse width; erasing power; reproducing power; Linear velocity at the time, other
(3) Information on the manufacture of each information recording medium, such as a serial number.

The rewritable zones of the lead-in area 27 and the lead-out area 26 are respectively
For example, it includes the following areas: (4) an area for recording a unique disc name for each information recording medium; (5) a test recording area (for confirming recording / erasing conditions); and (6) a defect in the data area DA. Area for recording management information about the area.

The areas (4) to (6) can be recorded by a DVD-RTR recording / reproducing apparatus (RTR video recorder or personal computer with a DVD-RAM drive).

The disk 10 is a DVD-RTR recording / reproducing machine (R
(TR video recorder), the information in the lead-in area 27 is read first. In the lead-in area 27, predetermined reference codes and control data are recorded in ascending order of the sector numbers.

The reference code in the lead-in area 27 is composed of two error correction code blocks (ECC blocks). Each ECC block is composed of 16 sectors. These two ECC blocks (32 sectors) are generated by adding scramble data. When a reference code to which scramble data is added is reproduced, a filter operation or the like on the reproduction side is performed so that a specific data symbol (for example, 172) is reproduced, so that the subsequent data reading accuracy is ensured.

The control data of the lead-in area 27 is 1
It is composed of 92 ECC blocks. In the control data portion, the contents of 16 sectors in each block are 1
It is recorded 92 times repeatedly.

The control data composed of 16 sectors includes physical format information in the first one sector (2048 bytes), and thereafter includes disc manufacturing information and content provider information.

The physical format information included in the control data includes the following contents.

That is, at the first position, the recording information is D
Which version of the VD standard is followed is described.

In the second position, the size (12 cm, 8 cm, etc.) of the recording medium (optical disk 10) and the minimum read rate are described. In the case of a read-only DVD video, the minimum read rate is 2.52 Mbps, 5.
04 Mbps and 10.08 Mbps are specified, but other minimum read rates are also reserved. For example, when recording is performed at an average bit rate of 2 Mbps by an RTR video recorder capable of recording at a variable bit rate, the minimum read rate is set to 1.5 to 1.8 Mbps by using the reserved portion. be able to.

At the third position, the disk structure (number of recording layers, track pitch,
Recording layer type) is described. Depending on the type of the recording layer, whether the disc 10 is a DVD-ROM or a DVD-R, a DVD-RAM (or a DVD-R)
W) can be identified.

At the fourth position, the recording density (linear density and track density) of the recording medium (optical disc 10) is described. The linear density indicates the recording length per bit (0.267 μm / bit or 0.293 μm / bit, etc.). Also, the track density is determined by the distance between adjacent tracks (0.74 μm / track or 0.80 μm).
/ Track etc.). DVD-RAM or DV
A reserve portion is also provided at the fourth position so that different numerical values can be designated as the linear density and the track density of the DR.

In the fifth position, the start sector number and end sector number of the data area 28 of the recording medium (optical disc 10) are described.

In the sixth position, a burst cutting area (BCA) descriptor is described. This BCA is D
This area is optionally applied only to a VD-ROM disc, and is an area for storing recording information after the disc manufacturing process is completed.

In the seventh position, the free space of the recording medium (optical disk 10) is described. For example, disk 10
Is a single-sided, single-layer recording DVD-RAM disc,
At this position on the disk 10, information indicating 2.6 GB (or the number of sectors corresponding to the number of bytes) is described. When the disk 10 is a double-sided recording DVD-RAM disk, information indicating 5.2 GB (or the number of sectors corresponding to the number of bytes) is described in this position.

Other positions are reserved for future use.

FIG. 3 is a view for explaining the data structure of the video object shown in FIG.

As shown, the video object DA
Each cell (for example, cell #m) constituting 22 is configured by one or more video object units (VOBU). Each VOBU is configured as an aggregate (pack sequence) of video packs, sub-picture packs, audio packs, dummy packs, and the like.

Each of these packs has a predetermined size of 2048 bytes, and is a minimum unit for performing data transfer processing. The minimum unit for performing logical processing (the minimum basic unit of video information) is a cell unit, and the logical processing is performed for this cell unit.

The playback time of the VOBU corresponds to the playback time of video data composed of one or more video groups (group of pictures; GOP for short) included in the VOBU, and the playback time is 0.4 seconds. It is set within the range of ~ 1.2 seconds. One GOP is usually about 0.5 seconds in the MPEG standard, and is screen data compressed so as to reproduce about 15 frame images during that time. (VO
The BU includes an integer number of GOPs except in a special case where a gap occurs in the video data flow. That is, V
The OBU is usually a video information compression unit synchronized with the GOP. If the VOBU includes video data, a video data stream is configured by arranging GOPs (conforming to the MPEG standard) including video packs, sub-picture packs, audio packs, and the like. However, regardless of the number of GOPs, the VOBU is determined based on the playback time of the GOP.

It should be noted that even if the playback data is only audio and / or sub-picture data that does not contain video,
Reproduction data is configured using OBU as one unit. For example, when a VOBU is composed of only audio packs, the audio pack to be reproduced within the reproduction time of the VOBU to which the audio data belongs is, as in the case of the video object of the video data, the VOBU.
Is stored in

The packs constituting each VOBU have the same data structure except for the dummy pack. Taking an audio pack as an example, as illustrated in FIG. 3, a pack header is arranged at the beginning, a packet header is arranged next, a substream ID is arranged next, and audio data is arranged last. You. In such a pack configuration, information of the presentation time stamp PTS indicating the head time of the first frame in the packet is written in the packet header.

Incidentally, in a DVD-RTR recording / reproducing apparatus capable of recording a video program including a video object DA22 having a structure as shown in FIG. 3 on the optical disk 10, there is a case where it is desired to edit the recorded contents after recording the program. In order to respond to this request, a dummy pack can be appropriately inserted into each VOBU. This dummy pack can be used when recording editing data later.

The dummy pack shown in FIG. 3 has a data structure as shown in FIG. That is, one dummy pack 89 includes a pack header 891, a packet header 892 having a predetermined stream ID, and padding data 893 filled with a predetermined code (invalid data). Here, the packet header 892 and the putting data 893 correspond to the putting packet 8
90. The contents of the unused dummy pack padding data 893 have no particular meaning.

The dummy pack 89 can be used as appropriate when editing the recorded contents after a predetermined recording is made on the disk 10 in FIG.

More specifically, the dummy pack is used for post-addition of information to be additionally recorded after recording (memo information for inserting the after-recording information into the audio pack and exchanging it with the dummy pack is used as sub-picture information as sub-picture information). In order to match the size of the VOBU with an integral multiple of the ECC block size (32 kbytes), the size of the VOBU is replaced by an integral multiple of 32 kbytes to compensate for the lacking size. It is inserted in the VOBU.

The dummy pack can also be used to store data of a reduced image (thumbnail picture) that is appropriately displayed on the user menu.

FIG. 5 is a view for explaining an example of the directory structure of information (data file) recorded on the optical disk of FIG. 1 with the data structure of FIG.

According to the DVD-RTR standard that allows digital recording / reproduction of video images in real time, the contents of a DVD disk are managed in a directory structure as shown in FIG. 5, and stored according to a file system such as IS09660 or UDF. .

Even if the disk / device has a data structure as shown in FIG. 2, the user cannot see this data structure. The data structure that the user can perceive is a hierarchical file structure as shown in FIG.

That is, according to the type of data recorded in the data area DA of FIG. 2, a display screen (not shown) of the root directory includes a DVD_RTR directory, a VIDEO_TS directory, an AUDIO_TS
The directory, the directory of the computer data file, and the like are displayed by a menu screen or an icon.

In the DVD_RTR directory shown in FIG.
File RT of navigation data RTR_VMG
R. IFO, movie video object RTR_MO
V. VOB file RTR_MOV. VRO, still picture video object RTR_STO. VOB file RTR_STO. VRO, still picture added audio object RTR_STA. VOB file RTR_STA. VRO, etc. are stored.

Here, the file RTR. The IFO stores management information for managing moving image information such as a program set, a program, an entry point, and a play list.

Also, the file RTR_MOV. VRO stores the recorded moving image information and its audio information, and the file RTR_STO. The VRO stores the recorded still image information and its audio information, and stores the file RTR_ST
A. The VRO stores post-record data for a still image and the like.

A DVD-RTR recording / reproducing device (RTR video recorder) has a function of displaying (or outputting) the directory shown in FIG. 5 and a DVD video disk (ROM disk).
If you have the playback function of DVD,
When the video disc is set, VIDEO_ in FIG.
The TS directory becomes active. In this case, VI
When the DEO_TS directory is opened, the recorded contents of the set desk are further displayed.

When the DVD-RTR recording / reproducing apparatus has a DVD audio reproducing function, when a DVD audio disk is set in the disk drive, A shown in FIG.
The UDIO_TS directory becomes active. In this case, when the AUDIO_TS directory is opened, the recorded contents of the set desk are further displayed.

Further, when the DVD-RTR recording / reproducing apparatus is constituted by a personal computer with a DVD-RAM drive and also has a function of processing computer data, a DVD with computer data recorded on the disk drive is used.
When the D-RAM (or DVD-ROM) disk is set, the computer data directory in FIG. 5 becomes active. In this case, when the computer data directory is opened, the recorded contents of the set desk are further displayed.

The user looks at the menu screen or the window display screen displayed in the directory structure shown in FIG. 5 and feels like using a personal computer. (Including computer programs).

FIG. 6 is a view for explaining the data structure of the navigation data file (RTR_VMG) of FIG. The RTR video manager RTR_VMG as navigation data is composed of various information as shown in FIG.

In FIG. 6, RTR video manager information RTR_VMGI describes basic information of the recordable / reproducible optical disk (RTR disk) 10 of FIG. This RTR_VMGI includes a video manager information management table VMGI_MAT and a playlist search pointer table PL_SRTP.

RTR_VMG further includes movie AV
File information table M_AVFIT, still image AV file information table S_AVFIT, original PGC
Information ORG_PGCI, user-defined PGC information table UD_PGCIT, text data manager TXTD
T_MG and a manufacturer information table MNFIT are included.

FIG. 7 shows the contents of the video manager information management table VMGI_MAT of FIG.

In FIG. 7, the VMG identifier VMG_ID
Is a character set code of ISO646,
"DVD_RTR_" that specifies the RTR_VMG file
VMG0 ”.

RTR_VMG_EA is RTR_VMG
RTR with relative byte number from the first byte of
_VMG describes the end address.

VMGI_EA is the RTR_VM with the relative byte number from the first byte of RTR_VMG.
This describes the end address of the GI.

VERN describes the version number of the DVD standard for video recording (real-time video recording).

[0096] TM_ZONE describes the time zone of the RTR disc. In the DVD_RTR standard, five types of data fields (PL_CREATE_
TM, VOB_REC_TM, FIRST_VOB_R
EC_TM, LAST_VOB_REC_TM, VOB
U_REC_TM) is defined. These five types of data fields are collectively called REC_TM.
REC_TM includes data of TZ_TY and TZ_OFFSET. TZ_TY describes the integrated universal time or local time, and TZ_OFFSET describes the date and time offset from the integrated universal time in minutes.

STILL_TM describes the still time of a still image in seconds.

[0098] The CHRS describes a character set code used for primary text information. With this CHRS, for example, a character set code of ISO8859-1 or a shift JIS kanji code can be designated.

RSM_MRKI includes a program chain number PGCN, a program number PGN, a cell number CN,
Marker point MRK_PT and marker creation time M
RK_TM is described. PGCN here
Indicates the number of the program chain in which the marker point exists. When a marker exists in the original PGC, PGCN is set to “0”. Also PGN
Indicates the number of the program in which the marker point exists. When the resume marker exists in the PGC defined by the user, PGN is set to “0”. Also CN
Indicates the number of the cell where the marker point is located. MRK_PT indicates a marker point in the target cell.
When there is a resume marker in the movie cell,
MRK_PT describes the playback time (PTM) in the RTR playback time description format. Also M
RK_TM is the time when the marker was created, RT
This is described in the date and time description format of R.

REP_PICTI includes a program chain number PGCN, a program number PGN, and a cell number C
N, picture point PICT_PT, and representative image creation time CREAT_TM of the disc.

Here, PGCN indicates the number of the program chain in which the representative image of the disc exists. The representative image of the disc is designated only by the pointer in the original PGC. Therefore, when this representative image pointer exists, PGCN is set to "0". Also P
GN indicates the number of the program in which the representative image of the disc exists. When the resume marker exists in the PGC defined by the user, PGN is set to “0”. CN indicates the number of the cell in which the representative image of the disc exists. PICT_PT indicates a representative image of the disc in the target cell. When this representative image exists in the movie cell, PICT_PT describes the reproduction time (PTM) in the RTR reproduction time description format. When this representative image exists in the still image cell, PICT_PT is the still image VOB entry number (S) in the corresponding still image VOB group (S_VOG).
_VOB_ENTN). Also CR
EAT_TM describes the time when the representative image of the disc was created in the RTR date and time description format.

M_AVFIT_SA is equal to RTR_VMG
The start address of the movie AV file information table M_AVFIT in FIG. 6 is described by a relative byte number from the first byte of the movie.

S_AVFIT_SA is RTR_VMG
The start address of the still image AV file information table S_AVFIT in FIG. 6 is described by the relative byte number from the first byte of the still image.

ORG_PGCI_SA is RTR_VM
With the relative byte number from the first byte of G,
Describes the start address of the original PGC information ORG_PGCI.

UD_PGCIT_SA is equal to RTR_VM
With the relative byte number from the first byte of G,
Describes the start address of the user-defined PGC information table UD_PGCIT. When UD_PGCIT does not exist, UD_PGCIT_SA is “000”.
0000h ".

TXTDT_MG_SA is equal to RTR_VM
With the relative byte number from the first byte of G,
Describes the start address of the text data manager TXTDT_MG. When TXTDT_MG does not exist, TXTDT_MG_SA is “0000”.
0000h ”.

[0107] MNFIT_SA describes the start address of the manufacturer information table MNFIT in Fig. 6 with a relative byte number from the first byte of RTR_VMG. If MNFIT does not exist, MNFIT
_SA is set to “0000 0000h”.

FIG. 8 shows the data structure of the playlist search pointer table PL_SRPT of FIG.

[0109] PL_SRPT describes information necessary for searching and accessing a playlist in the RTR disc, and includes playlist search pointer table information PL_SRPTI and one or more playlist search pointers PL_SRP # 1 to PL_SRP #. n.

Each play list is composed of a user-defined PGC, and each PL_SRP has a PGC number corresponding to the play list.

[0111] The play list is specified by the play list number PLN attached thereto. PLN is all PL
_SRP and these PLNs have P
1 in the order of description of one or more PL_SRPs in the L_SRPT
To a maximum of 99.

The user can identify a specific playlist from others by using the PLN. Alternatively, the user can identify a specific playlist from others by text information given to the playlist.

FIG. 9 shows the contents of the playlist search pointer table information PL_SRPTI of FIG.

[0114] PL_SRP_Ns indicates the number of playlist search pointers PL_SRP in PL_SRPT.

Further, PL_SRPT_EA is set to PL_S
A playlist search pointer PL_SRPT described by a relative byte number from the first byte of the RPT
Indicates the end address of

FIG. 10 shows the contents of the playlist search pointer table PL_SRP of FIG.

In FIG. 10, PL_TY describes the format of a play list. That is, PL_T
The content of Y (4-byte PL_TY1) can specify whether the playlist is a movie playlist, a still image playlist, or a hybrid (mixed movie and still image) playlist.

The PGCN describes the number of the corresponding user-defined program chain UD_PGC.
The maximum number of this PGCN is 99.

[0119] PL_CREATE_TM describes the time when the play list was created in the date and time description format of the RTR. This PL_CREA
TE_TM can describe years, months, days, hours, minutes, and seconds.

[0120] PRM_TXTI describes primary text information for a play list. This PRM_T
The XTI is composed of 128 bytes, the first 64 bytes are used for describing primary text information in an ASCII character set, and the remaining 64 bytes are used for describing primary text information in another character set (such as shift JIS or ISO8859-15). Used for Other character set codes are described in VMGI_MAT, and can be used in all primary text information in the corresponding disc. Note that the terminal control code is not described in PRM_TXTI.

IT_TXT_SRPN describes the number of IT_TXT_SRP in the playlist.
(The item text IT_TXT will be described later with reference to FIG. 18.) THM_PTRI describes information of a thumbnail pointer THM_PTR.
The setting or use of the thumbnail pointer information THM_PTRI can be treated as an option for both the RTR recorder and the RTR player. If the RTR recorder does not have the ability to handle THM_PTRI, all of the 8-byte THM_PTRI may be set to “FFh”. RTR player is THM_PTRI
If you do not have the ability to handle
Can be ignored.

The thumbnail (Thumbnail) is an image of an image as small as a thumb nail, and is usually an image obtained by reducing a still image in a recorded video image to a thumbnail size. Say.

FIG. 11 shows the contents of the thumbnail pointer information THM_PTRI in FIG. In FIG. 11, CN describes the number of the cell in which the thumbnail point exists. THM_PT describes a thumbnail point in the target cell.

Here, when a resume marker exists in a movie cell, THM_PT describes the playback time (PTM) in the playback time description format of the RTR.

When the thumbnail exists in the still picture cell, THM_PT is set to the corresponding still picture VOB.
The still image VOB entry number (S_VOB_ENTN) in the group (S_VOG) is described.

FIG. 12 shows the data structure of the movie AV file information table M_AVFIT in FIG.

M_AVFIT describes information of a movie AV file (file RTR_MOV.VRO in FIG. 5), movie AV file information table information M_AVFITI, and one or more movie VOB stream information M_VOB_STI # 1 to M_VOB_ST.
I # n and movie AV file information M_AVFI.

M_AVFI is information on a movie AV file having a predetermined file name (RTR_MOV.VRO), and general movie AV file information M
_AVFI_GI and one or more movie VOB information search pointers M_VOBI_SRP # 1 to M_VOBI_
SRP # n and one or more movie VOB information M_VOB
I # 1 to M_VOBI # n.

One movie AV file contains one or more V
OBs, and each VOB may have a V in the M_AVFI.
It has movie VOB information M_VOBI for OB.
One or more M_VOBIs in M_AVFI are movie A
It is described in the same order as the VOB data stored in the V file.

FIG. 13 shows the movie VOB information M of FIG.
_VOBI shows the data structure. As shown, M_VOBI is movie VOB general information M_VOB.
BI_GI, seamless information SMLI, audio gap information AGAPI, and time map information TMAP
I.

M_VOBI_GI in FIG. 13 is a VOB_TY describing the VOB format and a VOB describing the head recording time of the VOB in the RTR date and time description format.
_REC_TM and a VOB that describes the recording time (subsecond information) at the beginning of the VOB in terms of the number of video fields
_REC_TM_SUB, M_VOB_STIN describing the number of movie VOB stream information, and VOB
VOB_V_S_ which describes the playback start time of the first video field in RTR playback time description format
It includes a PTM and a VOB_V_E_PTM that describes the playback end time of the last video field of the VOB in an RTR playback time description format.

The VOB_TY includes TE indicating whether the VOB is in the temporary erase state, A0_STATUS indicating the state of audio stream # 0, A1_STATUS indicating the state of audio stream # 1, and the format of analog copy protection. An analog protection system APS indicating the on / off state and a VO
SML_F indicating whether or not B should be played seamlessly
LG, A0_GAP_LOC indicating whether an audio gap exists in audio stream # 0, and if so, where it is, and whether an audio gap exists in audio stream # 1, and if so, where. A1_GAP_LOC indicating whether there is an audio gap.

When the head of the VOB is deleted (erased), the VOB_REC_TM is updated to indicate the time when the head of the remaining VOB was recorded.

That is, “new VOB_REC_TM
= Old VOB_REC_TM + playback duration of deleted part ".

On the other hand, if the reproduction duration of the deleted part cannot be displayed in seconds (for example, when the reproduction duration of the deleted part is 60.5 seconds), the “new VOB_R
EC_TM + new VOB_REC_TM_SUB = old VOB_REC_TM + old VOB_REC_TM_
SUB + reproduction duration of deleted portion ".

Since VOB_REC_TM describes the date and time of video recording, even if the audio data is modified, VOB_REC_TM is not affected.

Here, the above-mentioned RTR date and time description format will be briefly described. In this format, the reproduction time PTM is represented by a PTM base and a PTM extension. PTM base is 9
The value is measured in units of 0 kHz, and the PTM extension is a value measured in units of 27 MHz.

The SMLI shown in FIG. 13 uses the SCR (system clock reference) of the first pack of the current VOB as an RTR.
VOB_FI described in the playback time description format
PRE describing the RST_SCR and the SCR of the last pack of the preceding VOB in the RTR playback time description format
V_VOB_LAST_SCR.

FIG. 14 shows the time map information TM of FIG.
2 shows a data structure of an API. Time map information T
MAPI is used when performing special playback (such as cell playback in an order unique to an individual user using a user-defined PGC) and time search.

The time map information TMAPI includes general time map information TMAP_GI, at least one time entry TM_ENT # 1 to TM_ENT # r, and at least one V
OBU entries VOBU_ENT # 1 to VOBU_EN
T # q.

Each VOBU entry includes information on the size and reproduction time of each VOBU. The size of the VOBU is indicated in units of sectors (2 kbytes), and the reproduction time is a video field (1/60 second per field in NTSC; PA
In L, it is indicated in units of 1/50 second per field).

Since the size of the VOBU is indicated by the sector unit as described above, the VOBU can be accessed by the address of the sector unit.

Each VOBU entry includes reference picture size information 1STREF_SZ and VOBU reproduction time information V
OBU_PB_TM and VOBU size information VOBU_
SZ.

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

On the other hand, each time entry has a corresponding VOBU.
Address information (VOBU_ADR) and time difference information (TM_DIFF). This time difference information indicates the difference between the playback time specified by the time entry and the playback start time of the VOBU.

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

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

[0148] To give a concrete example, "the presentation time stamp PTS at the head position of one VOBU"
The difference value between the PTS value at the head position of the VOBU immediately after the VOBU and the PTS value at the head position of the VOBU can represent the “time interval of the VOBU”.

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

FIG. 15 shows the contents of the time map general information TMAP_GI of FIG.

This time map general information TMAP_GI
Is TM_ENT_Ns indicating the number of time entries in the relevant time map information, and VO in the relevant time map information.
VOBU_ENT_Ns indicating the number of BU entries, and a time offset TM_OS for the corresponding time map information
F and the address offset AD of the corresponding time map information
R_OFS.

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

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

FIG. 16 shows the time entry TM_ of FIG.
This shows the contents of ENT.

This time entry TM_ENT is VOBU_ENTN indicating the number of the corresponding VOBU entry.
TM_D indicating the time difference between the playback start time of the VOBU specified by the time entry and the calculated playback time
IFF and VOBU_A indicating the target VOBU address
DR.

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

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

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

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

FIG. 17 shows the data structure of the user-defined PGC information table UD_PGCIT of FIG.

UD_PGCIT includes user-defined PCG information table information UD_PGCITI and one or more user-defined PGCI search pointers UD_PGCI_SRP #
1 to UD_PGCI_SRP # n and one or more user-defined PGC information UD_PGCI # 1 to UD_PGCI # n
And

All UD_PGCs have the UD_PGCI
1 to 9 in the order of description of UD_PGCI_SRP in T
Up to 9 program chain numbers PGCN are assigned. Each PGC can be specified by the PGCN.

Here, UD_PGCITI is UD_P
UD_PGCI_SRP_N indicating the number of GCI_SRP
s and UD_P indicating the end address of UD_PGCIT
GCIT_EA.

Note that the maximum value of UD_PGCI_SRP_Ns is set to, for example, "99". UD_PG
CIT_EA indicates the end address of UD_PGCIT by a relative byte number from the first byte of UD_PGCIT.

UD_PGCI_SRP is UD_PGCI_SRP.
It contains the PGCI start address UD_PGCI_SA. This UD_PGCI_SA is UD_PGCIT
UD_P with the relative byte number from the first byte of
It shows the start address of GCI.

FIG. 18 shows the data structure of the text data manager TXTDT_MG in FIG.

TXTDT_MG includes text data information TXTDTI and one or more item text search pointers IT_TXT_SRP # 1 to IT_TXT_SRP.
#N and one or more item texts IT_TXT.

TXTDTI is a character set code (ISO8859-1) used in TXTDT_MG.
Or CHRS that describes shift JIS kanji) and IT
IT_TXT_SRP describing the number of _TXT_SRP
_Ns and TXTDT_MG_EA describing the end address of TXTDT_MG with the relative byte number from the first byte of TXTDT_MG.

Each IT_TXT_SRP is represented by TXTDT_
IT with relative byte number from the first byte of MG
IT_TXT_SA describing the start address of _TXT
Contains.

IT_TXT describes the item text with the character code specified by the CHRS. The data length (the number of bytes) of IT_TXT changes according to the content of the text.

FIG. 19 shows the data structure of PGC information PGCI (information of original PGC or user-defined PGC).

[0172] The PGCI contains navigation information for the program chain PGC.

This program chain has two types, an original PGC and a user-defined PGC (RT in FIG. 6).
R_VMG). The original PGC has VOB and PGCI. However, the user-defined PGC is
It does not have its own VOB, but the VO in the original PGC
B is configured to be referred to.

As shown in FIG. 19, PGC information (PGC information
I # i) is PGC general information PGC_GI, one or more program information PGI # 1 to PGI # m, and one or more cell information search pointers CI_SRP # 1 to CI_SRP.
#N and one or more pieces of cell information CI # 1 to CI # n.

Here, the start address of the cell information CI is
It can be indicated by CI_SA described by a relative byte number from the first byte of PGCI.

FIG. 20 shows the PGC general information PGC of FIG.
_GI is shown.

This PGC_GI is composed of PG_Ns describing the number of programs in the PGC and CI_SRP in the PGC.
CI_SRP_Ns describing the number of

Here, in the case of the user-defined PGC, PG_
Ns is set to "0". Also, original PGC
The maximum number of programs PG is “99”, and P
The maximum number of cells in the GC is “999”.

FIG. 21 shows the program information PGI of FIG.
Is shown.

This PGI is composed of PG_TY describing the format of the program and C_Ns describing the number of cells in the PG.
And primary text information PRM_TXTI used for PG
And IT_T where text data corresponds to PG
XT search pointer number IT_TXT_SRPTN;
Thumbnail pointer information THM_PTRT is included.

Here, PRM_TXTI is composed of a 128-byte field, and the first 64 bytes are described by an ASCII character set. AS
If the CII text is less than 64 bytes, "00h" is written in the blank bytes.

The latter half 64 of the above 128 byte field
Bytes are in other character sets (eg, Shift JIS
Alternatively, it is used to describe the primary text of ISO8859-15). Where "other character sets"
Is described in VMGI_MAT and is shared by all primary text information in the disc.

The terminal control code that takes a value between “01h” and “1Fh” is PRM_TXTI
It is not described in.

The THM_PTRI describes information of a thumbnail pointer. That is, THM_
The PTRI includes a CN that describes the number of the cell where the thumbnail point exists, and a THM_PT that describes the thumbnail point in the target cell.

Here, when a resume marker is present in a movie cell, THM_PT describes the playback time (PTM) in the playback time description format of the RTR.

When a thumbnail exists in a still picture cell, THM_PT is set to the corresponding still picture VOB.
The still image VOB entry number (S_VOB_ENTN) in the group (S_VOG) is described.

The setting or use of THM_PTRI is
It can be treated as an option for both the TR recorder and the RTR player. RTR recorder is T
If the user does not have the ability to handle HM_PTRI, all of the 8-byte THM_PTRI may be set to “FFh”. If the RTR player does not have the ability to handle THM_PTRI, it may simply ignore THM_PTRI.

FIG. 22 shows the data structure of the cell information CI of FIG. As shown, the cell information includes movie cell information M_CI and still picture cell information S_C.
There are two types of I.

Information about entry point (M_C_
EPI) is the navigation data file RT shown in FIG.
R. It is written in the movie cell information M_CI in the IFO.

FIG. 23 shows the movie cell information M_ of FIG.
3 shows a data structure of a CI. As shown, M_
CI is movie cell general information M_C_GI and one or more movie cell entry point information M_C_EPI #
1 to M_C_EPI # n.

FIG. 24 shows the contents of the movie cell general information M_C_GI of FIG.

That is, M_C_GI is a C_TY describing a cell format and an M_VO describing a movie VOBI search pointer number corresponding to the VOB of this cell.
BI_SRPN, C_EPI_Ns describing the number of cell entry point information, and C_EPI_Ns describing the playback start time of this cell in RTR playback time description format.
V_S_PTM and C_V_E_ which describe the playback end time of this cell in RTR playback time description format
PTM.

Here, C_V_S_PTM and C_V
_E_PTM satisfies the following conditions.

(1) In the case of a cell in the original PGC C_V_S_PTM is the first four VOs of the corresponding VOB.
Entering the BU; C_V_E_PTM is the last four VOs of the corresponding VOB
(2) For a cell in a user-defined PGC: O_C_V_S_PTM ≦ C_V_S_PTM <C_V
_E_PTM ≦ O_C_V_E_PTM, where O_C_V_S_PTM indicates the reproduction start time of the original cell corresponding to the VOB referred to by this cell, and O_C_V_E_PTM indicates the reproduction start time of the VOB referred to by this cell.
Indicates the reproduction end time of the original cell corresponding to OB.

FIG. 25 shows the contents of the movie cell entry point information M_C_EPI of FIG.

There are two types of M_C_EPI (type 1 and type 2). Type 1 M_C_EPI without text information is composed of EP_TY and EP_PTM, and type 2 M_C_EPI with text information is composed of EP_TY, EP_PTM and PRM_TXTI. FIG. 25 shows the case of type 2.

As shown in FIG. 25, M_C_EPI is EP_TY describing the format of the entry point, EP_PTM describing the playback time of the entry point in the RTR playback time description format, and PRM_TXTI describing the primary text information and the like of the entry point. And

When the reproduction is performed, EP_PT
The value of M and the cell playback time are converted into a file point indicating the VOBU by the time map TMAP information (see FIGS. 14 to 16), and further converted into a physical address by the file system.

The PRM_TXTI of M_C_EPI is 12
It consists of an 8-byte field. The first 64 bytes are used to describe the primary text in the ASCII character set. If the primary text of the ASCII character set is less than 64 bytes, less than 64 bytes will be padded with "00h". The remaining 64 bytes are other character sets (Shift JIS, ISO88
59-15) to describe the primary text. This "other character set" is VMGI_MAT
And is provided for all primary text information on the disc.

The terminal control code taking a value between “01h” and “1Fh” is PRM_TXTI
It is not described in.

EP_TY of M_C_EPI is composed of 1-byte data including a 2-bit type identification code. If this identification code is "00b", type 1 M_C
_EPI (primary text data is empty or empty), and “01b” indicates that it is a type 2 (primary text data exists) M_C_EPI.

This EP_TY has a reserved area for 6 bits in addition to the 2-bit type identification code for distinguishing type 1 and type 2 described above. The PRT of M_C_EPI is utilized by using a part or all of the bits of the reserved area.
The contents of _TXTI can be further specified. (6
If all bits are used, a maximum of 64 types can be specified.
Six or more bits may be assigned to this designation code so that more types can be designated. Hereinafter, the bit using the reserved area will be referred to as a designation code for designating the content of the primary text information.

The specific bits of the specified code are used to
5 PRM_TXTI of M_C_EPI is “text information” with “information type” and / or “information date” or “text information” without “information type” and / or “information date” Can be specified.

Further, the PRM_TXTI of M_C_EPI in FIG.
"Text information" with corresponding "thumbnail information" in addition to "information type" and / or "information date" or "text information" without "thumbnail information"
Can be specified. ("Thumbnail information"
Is, for example, the thumbnail pointer information THM_ of FIG.
This is information corresponding to the PTRI. Further, it is possible to specify whether the PRM_TXTI of M_C_EPI in FIG. 25 is only “thumbnail information” without “text information” or “thumbnail information” accompanied by “text information” by the specific bits of the above specification code.

When the designation code (not shown) in EP_TY designates “information type”, “information date” and “text information” in FIG. 25, these information are used to express the following contents. be able to.

That is, the attribute of the entry point is described in the “information type”, the date and time when the entry point was registered (recorded on the disc) is described in the “information date”, and the entry point is described in the “text information”. Additional information (such as a simple description of the video of the entry point) is described.

The attribute of the entry point described in the above “information type” is, for example, as follows: information type [1] = 0; user mark (user registers entry point) information type [1] ] = 1; set mark (recording / playing machine registers entry point) information type [1] = 2; defect start mark information type [1] = 3; defect end mark information type [1] = 4; reproduction start mark information Type [1] = 5; reproduction end mark information type [1] = 6; non-erasable mark information type [1] = 7; other marks (instructions from other than user, recording / reproducing apparatus, etc.) Here, information type [ [1] of [1] means the first of the information type data field. If this data field has a 3-bit configuration, information type [1] can indicate eight types of marks.

[0208] Information similar to "information type", "information date" and / or "text information" (further, "thumbnail information") in FIG. 25 is provided in playlist search pointer PL_SRP in FIG. Can also.

Incidentally, in the DVD_RTR system,
It is configured to handle text information other than text managed by the text data manager TXTDT_MG in FIG. The text information includes primary text information described in a program (FIG. 21), primary text information described in a playlist (FIG. 10), and primary text information described in a selected entry point (FIG. 25). .

These primary text information PRM_TXT
I is used by the user to identify the corresponding recorded content using a character set such as ASCII or Shift JIS.

One example is shown in FIG. That is, the player (RTR recording / reproducing machine) transmits the primary text information P in FIG.
RM_TXTI is read from the disc 10 and the recording date and time information of the recorded program (PG1, PG2, PG3,...) Is displayed on the display panel of the player (in this example, program # 1 is at 12:30:15 in the daytime). Indicates that recording started in seconds.)

The corresponding primary text information P from the disc
When RM_TXTI is read, the player outputs the result to a monitor (television). Then, before the playback of the recorded programs (PG1, PG2, PG3,...) Starts, the simple contents of the programs recorded on the disk 10 ("Family barbecue" or P
G2 "Daughter's 7th birthday" etc.) is displayed on the monitor screen.

From this display, the user can easily select a desired program. When the user selects a desired program (for example, "barbecue with family") by operating a cursor on a remote controller (not shown) and presses a play button, reproduction of program # 1 is started.

Primary text information PRM_ of playlist
Display / user selection / playback operation using TXTI (FIG. 10) or primary text information P of entry point
The display / user selection / reproduction operation using RM_TXTI (FIG. 25) can be performed by the user with the same feeling.

That is, as shown in FIG. 27, an entry point (corresponding to a “bookmark” in a book) is attached to an arbitrary position in each program, and primary text information PRM_TXTI (see FIG. 2
In 5), a text such as "Family barbecue" can be stored.

[0216] When the user enters the recorded program #
The same applies to the case where 1 to # 4 are disassembled into arbitrary parts, the playback order of the disassembled parts is registered in playlists # 1 and # 2, and each part has an entry point.

Further, a short title such as "grandmother and barbecue" can be written in the primary text information PRM_TXTI (FIG. 10) of each playlist.

FIG. 28 shows the reproduction start time / reproduction end time of the cells constituting the user-defined PGC (or original PGC) and the movie video object RTR_of FIG.
MOV. Each video object VOB that makes up VRO
FIG. 7 is a diagram for explaining an example of correspondence between VOBUs and offset addresses.

In FIG. 28, PGCI and M_VO
BI information is shown in RTR. Stored in IFO file. The VOB of the VOBU set corresponding to the PCG of the cell set is RTR_MOV. Stored in VRO file.

The program chain information PGCI of the original PGC in FIG. 28 manages a method of reproducing a program which is one or more cell sets, and each user-defined PGC manages a method of reproducing one or more cell sets determined by a user. It is.

The playback start time and playback end time of the cell of the original PGC or the cell of the user-defined PGC store corresponding video data and the like by the time map information TMAPI included in each of M_VOBI # i in FIG. The VOBU is converted into a file pointer from the beginning of the VRO file, and is converted into a physical address by the file system.

In order to reproduce each cell, the corresponding VOB
, Playback start time, and playback end time are described as cell information. When reproducing a cell, the reproduction start and end times are passed to the corresponding VOBI, and converted to a file pointer indicating a VOBU corresponding to the cell reproduction time by using a time map (TMAP) included in the VOBI. It is converted to a physical address by the file system and the VOB is accessed.

For example, video data (VOBS) recorded in audio / video data area DA2 in FIG.
Is composed of a group of one or more program chains PGC. Each PGC is a collection of one or more cell sets of programs, and it is possible to determine which cells are to be reproduced and in which order to form a program based on original PGC information or user-defined PGC information. I have.

The reproduction time and the reproduction order of the cell specified by the original PGC information or the user-defined PGC information are determined based on the contents of the time map information TMAPI in FIG. 14 (time map TMAP in FIG. 28). It is converted into the address of the VOBU constituting each.

That is, when playback is performed in the original PGC (cell playback order in the first recording state), the OPC shown in FIG.
Time map information (TMA) according to the contents of RG_PGCI
The address of the VOBU in the time zone to be reproduced is obtained via P), and the reproduction is performed in that order.

On the other hand, when playback is performed by PGC uniquely defined by the user (for example, when the playback order is edited by the user after recording), playback is performed via time map information (TMAP) according to the contents of UD_PGCI in FIG. The address of the VOBU in the appropriate time zone is obtained, and playback is performed in that order.

The cell playback order based on the user-defined PGC information UD_PGCI is based on the original PGC information ORG_P.
This can be completely different from the cell reproduction order by GCI.

The playback time and the address of the playback target VOBU correspond to the time map information TMAPI shown in FIG.
It is possible to refer to the contents of the time entry and the VOBU entry in the table and associate them with each other.

FIG. 29 is a block diagram illustrating an example of the configuration of an apparatus (RTR video recorder) for performing real-time recording / reproduction of a video program or the like using the recordable / reproducible optical disk 10 of FIG.

The main body of the RTR video recorder shown in FIG. 29 is roughly a DVD-RAM or DVD
A disk drive unit (3) that rotates the R disk 10 and reads and writes information on the disk 10;
2, 34 etc.) and the encoder unit 50 constituting the recording side
, A decoder section 60 constituting the reproducing side, and a microcomputer block 30 for controlling the operation of the apparatus main body.

The encoder section 50 has an ADC (analog
Digital converter) 52, video encoder (V encoder) 53, and audio encoder (A encoder)
54, a sub-picture encoder (SP encoder) 55,
A formatter 56 and a buffer memory 57 are provided.

The ADC 52 has an external analog video signal from the AV input section 42 and an external analog audio signal,
Alternatively, an analog TV signal + analog audio signal or the like from the TV tuner 44 is input. The ADC 52 digitizes the input analog video signal at, for example, a sampling frequency of 13.5 MHz and a quantization bit number of 8 bits.

Similarly, ADC 52 converts the input analog audio signal into, for example, sampling frequency 48
Digitization is performed at kHz and a quantization bit number of 16 bits.

When an analog video signal and a digital audio signal are input to ADC 52,
C52 allows the digital audio signal to pass through.

When a digital video signal and a digital audio signal are input to ADC 52,
C52 allows the digital video signal and the digital audio signal to pass through.

The digital video signal component from the ADC 52 is sent to a formatter 56 via a video encoder (V encoder) 53. The digital audio signal component from the ADC 52 is sent to a formatter 56 via an audio encoder (A encoder) 54.

The V encoder 53 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.

The A encoder 54 has a function of converting an input digital audio signal into a digital signal (or a linear PCM digital signal) compressed at a fixed bit rate based on the MPEG or AC-3 standard. .

When a DVD video signal is input from the AV input unit 42, or when a DVD video signal is broadcast and received by the TV tuner 44, the teletext signal component in the DVD video signal is converted to the SP encoder 55. Is input to The sub-picture data input to the SP encoder 55 is arranged in a predetermined signal form and sent to the formatter 56.

The formatter 56 includes a buffer memory 57
Is used as a work area, performs predetermined signal processing on the input video signal, audio signal, sub-picture signal, and the like, and outputs recording data conforming to a predetermined format (file structure) to the data processor 36. .

Here, the contents of the standard encoding process for creating the recording data will be briefly described. That is, when the encoding process is started in the encoder unit 50 in FIG. 29, video data and other parameters necessary for encoding are set. Next, the main video data is pre-encoded using the set parameters, and the optimal code amount distribution for the set average transfer rate (recording rate) is calculated. Encoding of the main video is executed based on the code amount distribution obtained by the pre-encoding in this manner. At this time, the encoding of the audio data is also executed at the same time.

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

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

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

The encoded main video data, audio data and sub video data are subdivided into packs of a fixed size (2048 bytes) as shown in FIG. Dummy packs are appropriately inserted into these packs. In addition, in the packs other than the dummy pack, the PTS
(Presentation time stamp), a time stamp such as DTS (decode time stamp) and the like are described. For the PTS of the sub-picture, a time arbitrarily delayed from the PTS of the main picture data or audio data in the same reproduction time zone can be described.

Each data cell is arranged in VOBU units so that the data can be reproduced in the order of the time code of each data, thereby forming a VOB composed of a plurality of cells. The RTR_MOV. The VRO file is formatted with the structure of FIG.

When a DVD reproduction signal is digitally copied from a DVD video player, the contents of cells, program chains, management tables, time stamps, and the like are determined from the beginning, so that it is not necessary to create these again. (However, in order to configure the RTR video recorder so that the DVD reproduction signal can be digitally copied, it is necessary to provide a digital watermark or other copyright protection means.) Reading and writing information from and to the DVD disk 10 ( The recording / reproducing) disk drive unit includes a disk drive 32, a temporary storage unit 34,
A data processor 36 and a system time counter (or system time clock; STC) 38 are provided.

The temporary storage unit 34 stores
A certain amount of data (data output from the encoder unit 50) written to the disk 10 via the disk drive 32 is buffered or data reproduced from the disk 10 via the disk drive 32 (input to the decoder unit 60). Is used to buffer a certain amount of the data.

For example, when temporary storage unit 34 is formed of a 4 Mbyte semiconductor memory (DRAM), an average of 4 Mbytes is used.
It is possible to buffer recording or reproduction data for about 8 seconds at a recording rate of bps. Further, when the temporary storage unit 34 is constituted by a 16 Mbyte EEPROM (flash memory), it is possible to buffer recording or reproduction data for about 30 seconds at an average recording rate of 4 Mbps. Further, when the temporary storage unit 34 is configured by a 100 Mbyte ultra-small HDD (hard disk), it is possible to buffer recording or reproduction data for 3 minutes or more at an average recording rate of 4 Mbps.

[0250] The temporary storage unit 34 stores the disk 1 during recording.
When 0 is used up, it can be used to temporarily store recording information until the disk 10 is replaced with a new disk.

In the case where a high-speed drive (double speed or higher) is employed as the disk drive 32, the temporary storage unit 34 temporarily stores extra data read from the normal drive within a certain period of time. Also available. If the read data at the time of reproduction is buffered in the temporary storage unit 34, the reproduced data buffered in the temporary storage unit 34 can be switched and used even when a read error occurs in an optical pickup (not shown) due to vibration shock or the like. This makes it possible to prevent the reproduced video from being interrupted.

Although not shown in FIG. 29, if an external card slot is provided in the RTR video recorder, the EE
The PROM can be sold separately as an optional IC card.
If the RTR video recorder is provided with an external drive slot or a SCSI interface, the HDD can be sold separately as an optional extended drive.

When a personal computer with a DVD-RAM drive is converted into an RTR video recorder by software (not shown), a part of the free space of the hard disk drive of the personal computer itself or a part of the main memory is used. It can be used as the temporary storage unit 34 in FIG.

Under the control of the microcomputer block 30, the data processor 36 in FIG. 29 supplies DVD_RTR recording data from the encoder unit 50 to the disk drive 32, and outputs a DVD_RTR reproduction signal reproduced from the disk 10 from the drive 32. It takes out, rewrites management information (part of the file data in FIG. 5) recorded on the disk 10, and deletes data (part or all of the file) recorded on the disk 10.

The microcomputer block 30 has M
It includes a PU (or CPU), a ROM in which a control program and the like are written, and a RAM that provides a work area necessary for executing the program.

The MPU of the microcomputer block 30 uses the RAM as a work area in accordance with the control program stored in the ROM, and executes entry point registration processing, text information input processing, playback menu display processing, and text information A search process (recorded content search process), a defect registration process, a priority deletion order registration process, and the like are executed.

In these processes, data input by the user of the RTR video recorder (such as text input of a short title of recorded content) is provided from the information input unit 100 to the MPU 30. Although not shown, a keyboard of a personal computer or a cursor key / numeric keypad of a remote controller can be used as the information input unit 100.

The contents to be notified to the user of the RTR video recorder among the execution results of the MPU 30 are displayed on the display unit 48 of the RTR video recorder. The notification content is displayed on the monitor display using an on-screen display (OSD), a sub-picture, or the like as appropriate.

It is to be noted that the MPU 30 is a disk drive 3
2. The timing for controlling the data processor 36, the encoder unit 50, and / or the decoder unit 60 is based on STC3.
8 (the recording / playback operation is normally performed in synchronization with the time clock from the STC 38, but the other processing is performed based on the time data from the STC 38).
It may be executed at a timing independent of the STC 38).

The MPU 30 can also execute processing such as the recording date and time of each program recorded on the disk 10 and the registration date and time of the entry point based on the time data from the clock unit 40. .

The decoder section 60 includes a separator 62 for separating and extracting each pack from DVD_RTR reproduction data having a pack structure as shown in FIG. 3, a memory 63 used for performing pack separation and other signal processing, and a separator 62. Separated main video data (contents of video pack)
A video decoder (V decoder) 64 for decoding
A sub-picture decoder (SP decoder) 65 for decoding the sub-picture data (contents of the sub-picture pack) separated by the separator 62 and an audio decoder (A) for decoding the audio data (contents of the audio pack) separated by the separator 62 A video processor 66 for appropriately combining the sub-picture data from the SP decoder 65 with the video data from the V-decoder 64, and superimposing and outputting a menu, highlight buttons, subtitles and other sub-pictures on the main picture. A video / digital converter for converting a digital video output from the video processor 66 into an analog video signal.
An analog converter (V / DAC) 67 and an A decoder 68
And an audio / digital / analog converter (A / DAC) 69 for converting a digital audio output from the A / D into an analog audio signal.

An analog video signal from the V / DAC 67 and an analog audio signal from the A / DAC 69 are supplied via an AV output section 46 to an external component (not shown) (a multi-channel stereo apparatus of 2 to 6 channels + a monitor TV or a projector). ).

The OSD data appropriately output from the MPU 30 is input to the video processor 66 in the decoder unit 60. Then, this OSD data is superimposed on the main video,
It is supplied to an external monitor TV connected to the AV output unit 46. Then, various text information is displayed together with the main video.

The data processing in the RTR video recorder is roughly divided into two types: a recording process and a reproduction process.

FIG. 30 is a flowchart for explaining an example of the recording operation in the RTR video recorder of FIG.

First, when the MPU 30 receives a recording command by a user's remote control operation or a timer recording program (not shown), the MPU 30 reads management data (file system, etc.) from the disk 10 (FIG. 1) set in the drive 32. Is read (step ST10), and a recording area (writing area) is determined.

If there is no unrecorded area or overwrite-erasable area of the minimum required size on disk 10 and there is no free space (NO in step ST12), a warning display indicating "no recording space" is displayed (step ST14). ), Stop recording.

If there is free space (step ST12)
Yes, and determines the write address (step ST1)
6) Perform necessary writing on the management area (RTR_VMG file or the like) so that recording (writing) is performed on the determined area (step ST18).

Next, initialization for recording is performed (step ST20). That is, the average transfer rate (for example, 4 Mbps) is given to each encoder of the encoder unit 50 in FIG.
), Reset the STC 38 to a predetermined value (for example, zero), set the write start address in the drive 32,
Formatter 56 (eg, MPEG2 / 4 Mbps)
Initialization for NTSC recording), setting of registration of dummy packs (FIGS. 3 and 4), setting of cell separation time to a predetermined value, and number of cell entry point information C_E
Set PI_Ns (FIG. 24) to zero.

When the above initial settings are completed, the encoder unit 5
0, a recording start command is set to each encoder, recording is started (step ST22), and recording processing (step ST22) is performed.
Enter 23).

The flow of the video signal in the recording process (step ST23) is as follows.

First, the AV input to the external AV input 42
The signal or the broadcast signal received by the TV tuner 44 is
A / D conversion is performed in the ADC 52. The A / D converted digital video signal is input to an A encoder 54. Further, a text signal such as a closed caption signal or a text broadcast included in the broadcast is input from the TV tuner 44 to the SP encoder 55.

Each encoder compresses the input signal by a predetermined method, cuts it into packets of 2048 bits per pack, packetizes them, and inputs them to the formatter 56.

Here, each decoder determines the PTS (presentation time stamp or reproduction time stamp), DT of each packet according to the count value from the STC 38.
S (decoding time stamp) is determined as necessary, and recording is performed.

The formatter 56 includes a buffer memory 57
Then, the packet data is temporarily stored, and then the inputted packet data is packed, mixed for each GOP, and transferred to the data processor 36.

The data processor 36 groups the transferred packs (2 kbytes) into groups of 16 packs (32 kbytes), for example, an ECC using a product code.
After processing, the data is sent to the disk drive 32.

At this time, if the recording is not yet ready in the drive 32, the recording signal from the data processor 36 is transferred to the temporary storage unit and waits until the drive 32 completes the preparation for data recording. Then, when data recording is ready, the drive 32 starts recording.

Here, as the temporary storage unit 34, a large-capacity memory is used in order to hold recording data for several minutes or more by high-speed access.

During the continuation of the recording process, a process of automatically registering entry points is performed at predetermined time intervals (for example, every 5 minutes) (step ST25; see FIG. 33). The entry point registration time interval can be arbitrarily set by the user, for example, in units of one minute. If this time interval is set longer than the free space (recordable time) of the disk 10, entry points will not be automatically registered.

During recording (No in step ST27), when the user requests entry point registration (step ST2)
9 Yes), the entry point is registered separately from the process of step ST25 (step ST31; FIG. 3).
2).

For example, the remote controller (not shown) has an entry point key, and when this entry point key is pressed during the recording process, the entry point information (FIG. 25) is registered at a location corresponding to the recorded content at that time. You.

At this time, in response to an entry point registration request from a user or a set (RTR video recorder), MPU 30 records entry point information in management information (RTR_VMG file in FIG. 5).

When the recording is completed (Yes in step ST27), each encoder and formatter in the encoder unit 50 is initialized, predetermined management information is sent to the drive 32, and this is recorded in the RTR_VMGI of the disk 10 (step ST34).

FIG. 31 is a flowchart for explaining an example of the reproducing operation in the RTR video recorder of FIG.

First, when the MPU 30 receives a playback command by a remote control operation or a timer playback program (not shown) by the user, the MPU 30 reads the management area (RTR_VMG) of the disk 10 via the drive 32 and the data processor 36 ( Step ST40),
Determine the playback address.

The MPU 30 selects a program chain and a program to be reproduced based on the read management data (step ST42), and sets a reproduction start command to each decoder of the decoder section 60 (step ST44).

Next, MPU 30 sends the determined reproduction address and read command to drive 32, and starts reproduction processing (step ST46).

The drive 32 reads the sector data of the disk 10 (FIG. 1) in accordance with the received read command, corrects the error by the data processor 36, and outputs the data to the decoder unit 60 in the form of pack data.

In the decoder unit 60, the read pack data is received by the separator 62. Separator 62
Packetizes the received data, transfers video packet data (MPEG video data) to the V decoder 64, and transfers audio packet data to the A decoder 68 according to the type of data (video, audio, sub-picture, etc.). The sub video packet data is transferred to the SP decoder 6.
Transfer to 5.

At the start of packet data transfer to each decoder, an SCR (system clock reference or reference system clock) is loaded into STC. Then, each decoder performs a reproduction process in synchronization with the value of the PTS (see FIG. 3) in the packet data (specifically, while comparing the values of the PTS and the STC). This makes it possible to reproduce a moving image with audio subtitles synchronized with the video.

If there is a request to reproduce the entry point of the specific cell at the time of reproduction (YES in step ST50), the EP_PTM of the target entry point (see FIG. 25) is TMAP.
(See FIG. 14) to convert to a file pointer, and the VOBU corresponding to the relevant entry point (see FIG. 28)
Is accessed (step ST52).

If there is no request for reproducing the entry point (NO in step ST50), the reproduction process is continued.

If there is an entry point registration request at the time of reproduction processing (step ST54 YES), entry point registration processing can be performed (step ST31). This entry point registration processing may be processing having the same contents as the entry point registration processing at the time of recording (ST31 in FIG. 30).

To end reproduction (step ST48)
Yes), after waiting until the reproduction of the VOBU being reproduced at that time is completed, the decoder in the decoding unit 60 is set to stop decoding (step ST58), and the reproduction process is terminated.

FIG. 32 shows a case where a user or a recorder / writer issues a request to register an entry point for a specific video or audio while the RTR video recorder (recorder / player) is recording or reproducing. 5 is a flowchart for explaining an example of the processing of FIG. This entry point registration processing is performed in step S of FIG. 30 or FIG.
Corresponds to T31.

An RTR video recorder (recording / reproducing apparatus) shown in FIG.
MPU 30 receives an entry point registration request from a user or a recording / reproducing device (step ST310), and receives C_EPI_Ns in movie cell general information M_C_GI.
(FIG. 24) is incremented by one (step ST3).
12).

When there is no entry point registration request, C_EPI_Ns is set to “0”.

The fact that C_EPI_Ns is incremented by one means that one entry point information can be added to the cell of the program currently being recorded (or being reproduced). Therefore, the MPU 30 secures an area for the movie cell entry point information (M_C_EPI) in the movie cell information (M_CI).

Thereafter, it is assumed that a text input is made by the user within a predetermined time (for example, within 30 seconds), or that the recording / reproducing machine gives a closed caption or the like of a broadcast program being air-checked as a text input (step ST).
314 yes).

[0300] The text input here is not necessarily limited to character input, but also includes, for example, input of an operation result in which a user selects a menu item or clicks an icon with a mouse.

[0301] Then, MPU 30 sets "1" to the entry point format EP_TY in the movie cell entry point information M_C_EPI (step ST31).
6). This EP_TY = "1" indicates that the primary text information PRM_TXTI is included in M_C_EPI.

Subsequently, the MPU 30 checks the current STC 38
And read this count value as M_C_EPI
Entry point playback time EP_PTM (FIG. 25)
(Step ST320).

[0303] Further, the MPU 30 reads the current time (year, month, day, hour, minute, and second) from the clock section 40, and stores the read value in the primary text information PRM_TX of the M_C_EPI.
Write to the information date in TI (FIG. 25) (step ST
322).

Thereafter, MPU 30 writes the following attribute data (any of 0 to 7) into information type [1] in primary text information PRM_TXTI (step ST).
324): information type [1] = 0; user mark (user registers an entry point) information type [1] = 1; set mark (recorder / writer registers an entry point) information type [1] = 2; defect Start mark information type [1] = 3; defect end mark information type [1] = 4; reproduction start mark information type [1] = 5; reproduction end mark information type [1] = 6; non-erasable mark information type [1] ] = 7; Other mark (instruction from user, other than recording / reproducing apparatus, etc.) Here, [1] of information type [1] means the first of the information type data field. If the first data field has a 3-bit configuration, the information type [1] is 8
Type attribute can be indicated, 256 for 8-bit configuration
Type attributes can be indicated.

Specifically, when the user requests entry point registration, information type [1] = 0, and when a recording / reproducing machine, ie, a set of RTR video recorders requests entry point registration, information type [1]. = 1.

Information type [1] = 2 for a defect start mark described later, and information type [1] = 3 for a defect end mark.

The information type [1] = 4 for a reproduction start mark described later, and the information type [1] = 5 for a reproduction end mark.

The information type [1] = 6 for a non-erasable mark described later.

[0309] The entry point registration request is sent from a broadcasting station during recording of a broadcast program or sent from a communication partner while downloading digital video data via a communication line. At this time, the information type [1] = 7.

If there is no text input for the entry point during the entry point registration process (NO in step ST314), “0” is set in EP_TY (step ST318).

[0311] Then, the MPU 30 sets "0" to EP_TY in the movie cell entry point information M_C_EPI.
Is set (step ST316). This EP_TY =
“0” is primary text information PRM in M_C_EPI
_TXTI indicates that there is no content.

In this case, PTS is set in EP_PTM (step ST330), and predetermined contents are put in information type [1] in PRM_TXTI (step ST32).
4), end the entry point registration process.

FIG. 33 is a flow chart for explaining an example of the entry point automatic registration processing (registration of entry points at fixed time intervals) in the RTR video recorder of FIG.

In this process, entry points are automatically registered at predetermined time intervals (without interrupting the recording operation), regardless of the content of the video or audio to be recorded.

First, before starting recording, the user makes initial settings. That is, the user sets the numerical value of the parameter a that specifies the entry point registration interval in minutes, and presets the index parameter n to 1 (step ST200).

If the user does nothing, a predetermined default value (for example, a =
5 or prohibit automatic registration of entry points a
= 0) is selected, and when the recording is started after the initial setting at the start of the recording in which n is preset to 1, the entry point constant interval registration processing is executed, for example, at the timing of step ST25 in FIG. Is done.

That is, first, S indicating the elapsed recording time
TC is compared with a × n × 5400000 (corresponding to “an” when a 90 kHz clock is used) (step ST)
250).

[0318] After recording starts, still an minutes (at first, an = 5)
Min) if not (No in step ST250),
The process returns to the recording process ST23 in FIG.

When an minutes (an = 5 minutes) have elapsed after the start of recording (YES in step ST250), entry point registration processing of, for example, the contents described with reference to FIG. 32 is executed (step ST31).

When the entry point registration at this time (fifth minute from the start of recording) is completed, the index parameter n is incremented by one (step ST252), and FIG.
It returns to the recording process ST23 of 0.

[0321] After recording is started, still an minutes (the next is an = 10)
Min) if not (No in step ST250),
The process returns to the recording process ST23 in FIG.

When an minutes (an = 10 minutes) have elapsed after the start of recording (YES in step ST250), entry point registration processing of, for example, the contents described with reference to FIG. 32 is executed (step ST31).

The above operation is repeated until the recording ends. As a result, for example, when a television broadcast program of 54 minutes is recorded, ten entry points are automatically registered there at 5 minute intervals.

[0324] The case where the RTR video recorder automatically inserts an entry point may be, for example, at the start of recording, at the end of recording, or at the time of temporary stop during recording, other than the case of registration at a fixed time interval irrelevant to the above-mentioned recorded contents. , When playback starts,
At the end of the reproduction, during the pause during the reproduction, when the video video to be recorded is switched, when the video audio to be recorded is switched, and the like.

For example, it is possible to detect a change in the audio level of the recording source (whether or not audio below a predetermined level has continued for a certain period of time) and to automatically register an entry point at the detected portion.

Alternatively, a change in the MPEG video data of the recording source (a sudden change in the image content due to a scene change lowers the moving image compression rate, so that the buffer capacity in the MPEG encoder is rapidly consumed in a short period of time). When a change is detected, an entry point can be automatically registered at the detected portion.

FIG. 34 is a flow chart for explaining an example of text information input processing in the RTR video recorder of FIG.

First, MPU 30 reads management data (RTR_VMG in FIGS. 5 and 6) from disk 10 (step ST100). By this reading, MPU
30 is the information content of the playlist (FIGS. 8 to 11), P
The information content of the GC (FIGS. 19 to 21) and the content of the movie cell information M_CI (FIGS. 23 to 25) can be known as appropriate.

Next, the MPU 30 reads the contents of the movie cell entry point information M_C_EPI of all entry points from the read management data (step ST102).

That is, the MPU 30 selectively extracts entry points of the entry point format EP_TY = “01b” (with primary text information PRM_TXTI) from the M_C_EPI (FIG. 25) for each entry point. Next, regarding the entry point with PRM_TXTI, the entry point playback time EP_P
Read TM and primary text information PRM_TXTI. Then, from the read PRM_TXTI, the information type, information date, and text information of the entry point are read.

This reading process of M_C_EPI is repeated as long as there is an unprocessed entry point (No in step ST104).

When there are no remaining entry points for which M_C_EPI has not been read (step ST104)
Yes), based on the read content, the MPU 30
Output the input menu information to the monitor (step ST1)
06).

In the input menu, as shown in FIG. 35, for example, the reproduction time (hour,
Minutes), a title based on the text information of PRM_TXTI, a thumbnail image based on THM_PTRI (FIG. 10), an attribute based on the information type of PRM_TXTI, and a mark recording date and time (year, month, day, hour, minute) based on the information date of PRM_TXTI. ) Are categorized for each item and are sorted and displayed in order of reproduction time (or order of recording time).

The user moves the cursor to a predetermined line position in the title portion of the menu by using the cursor key operation of a remote controller (not shown) or an optional keyboard or the like, and selects an entry point to input a text ( Step ST108). Thus, the user can operate the remote controller or the keyboard to input a desired text at the target entry point (step ST11).
0).

The above text input is executed for all entry points desired by the user (step S
If the text input is completed for all the entry points desired by the user (No in step ST112), the text information (FIG. 25) in the PRM_TXTI of M_C_EPI is changed to FIG. 35.
(Step ST114), and
The updated data is written to a predetermined area of the management data (RTR_VMG) (step ST116).

As described above, text information and the like desired by the user are input to the entry point desired by the user, and the contents are registered in the corresponding disk 10 (FIG. 1).

FIG. 36 schematically shows a state where information as exemplified in FIG. 35 is registered in the disk 10 by the processing of FIG.

In FIG. 36, the attribute “10” of the entry point at the start of recording for the recording time 00′00 ”and the attribute“ 10 ”of the entry point at the end of recording for the recording time 02′00” are the RTR video recorder. Indicates that the entry point was automatically inserted. Here, the recording date and time is written based on the time data from the clock unit 40 in FIG. 29, and the text "Cinderella" is automatically written by taking out from the closed caption at the beginning of the broadcast program (broadcast with text). is there.

The recording times 00′30 ″ and 01 ′ of the disc
The three entry points 00 "and 01'10"
The part overwritten by a user operation is shown in the middle of the recorded program called Cinderella. Therefore, the attribute of the entry point is “00” of the user mark.
The recording date and time is also far from the recording date and time of Cinderella.

At the entry point by this user,
An image of the portion (a reduced I-picture of MPEG) is extracted as a thumbnail, and this thumbnail is used as a part of the entry point data as THM_ of the playlist search pointer PL_SRP (FIG. 10).
Registered in PTRI.

In FIG. 37, the thumbnail is not registered as shown in FIG. 36. Instead, the user inputs text at the entry point, and the text information is stored in the PR of the movie cell entry point information M_C_EPI.
An example is shown in which the information is registered in M_TXTI (FIG. 25).

FIG. 38 is a flowchart for explaining an example of the reproduction menu display processing in the RTR video recorder of FIG.

First, the MPU 30 reads management data (RTR_VMG, etc.) from the disk 10 (Step S).
T700). By this reading, the MPU 30 determines the information content of the playlist (FIGS. 8 to 11), the information content of the PGC (FIGS. 19 to 21), and the movie cell information M_C.
The contents of I (FIGS. 23 to 25) can be known as appropriate.

Next, MPU 30 reads the contents of movie cell entry point information M_C_EPI of all entry points from the read management data (step ST702).

That is, the MPU 30 selectively extracts the entry point of the entry point format EP_TY = “01b” (with primary text information PRM_TXTI) from the M_C_EPI (FIG. 25) for each entry point. Next, primary text information PRM_TXT
I is read, and the information type [1] of the entry point is read.

The description content of this information type [1] is as follows: information type [1] = 0; user mark (user registers entry point) information type [1] = 1; set mark (recording / playback unit sets entry point Registration) information type [1] = 2; defect start mark information type [1] = 3; defect end mark information type [1] = 4; reproduction start mark information type [1] = 5; reproduction end mark information type [1] ] = 6; non-erasable mark Information type [1] = 7; other mark (instruction from user or other than recording / reproducing machine)

If the read information type [1] is 0 (user mark) or 1 (set mark) (YES in step ST703), MPU 30 further reads information date and text information from primary text information PRM_TXTI (step ST703). ST704).

If the read information type [1] is neither 0 nor 1 (No in step ST703), step S703 is executed.
T704 is skipped.

The M_C_EPI information reading process (ST
Steps 702 to ST704) are repeated while there is an unprocessed entry point (No in step ST706).

By repeating this process, the MPU 30 can take in all the movie cell information of the entry point of the user mark or the set mark.

When there are no remaining entry points for which M_C_EPI has not been read (step ST706)
Yes), based on the read content, the MPU 30
Output reproduction menu information to the monitor (step ST7)
08).

In the reproduction menu, as shown in FIG. 39, for example, the reproduction time (hour,
Minutes), a title based on the text information of PRM_TXTI, a thumbnail image based on THM_PTRI (FIG. 10), an attribute based on the information type of PRM_TXTI, and a mark recording date and time (year, month, day, hour, minute) based on the information date of PRM_TXTI. ) Are sorted for each item, and are sorted and displayed in the order of the reproduction time of the entry points (or in the order of the mark recording time of the entry points).

The user moves the title selection cursor to a desired line position in the playback menu by operating a cursor key on a remote controller (not shown), for example.
An entry point to be reproduced is selected (step ST710).

The MPU 30 converts the entry point playback time value of the selected entry point into a corresponding file pointer based on the time map information (FIGS. 14 to 16) (step ST712). By using this file pointer, the entry point playback time value is converted into a physical address (VOBU address) by the file system, and playback is started.

FIG. 40 is a flowchart for explaining an example of text information search processing in the RTR video recorder of FIG.

First, MPU 30 performs a process of displaying a playback menu for inputting a search keyword (step S).
T400).

The search reproduction menu is used when the user inputs a keyword for performing a search on information recorded in the M_C_EPI (FIG. 25) of each entry point.

For example, as shown in FIG. 41, the user inputs a search keyword so as to search all titles containing the character string “Cinderella” and marked in January 1999. (Step ST402).

[0359] Then, the MPU 30 reads the management data (RTR_VMG) from the disk 10, and reads the movie cell information M_CI of all the entry points recorded.
(Step ST404).

[0360] Then, M_C_EPI is obtained from the obtained information.
And reads the information date and text information from the PRM_TXTI (FIG. 25) (step ST406).

Next, the MPU 30 performs a search based on a keyword set by the user (a character string including a character string “Cinderella” marked in January 1999).

As a result, if an entry point that matches the keyword is found (YES in step ST408),
The information type [1] of the entry point is read from PRM_TXTI of the entry point (step ST410).

The description content of this information type [1] is as follows: information type [1] = 0; user mark (user registers entry point) information type [1] = 1; set mark (recording / playing machine sets entry point Registration) information type [1] = 2; defect start mark information type [1] = 3; defect end mark information type [1] = 4; reproduction start mark information type [1] = 5; reproduction end mark information type [1] ] = 6; non-erasable mark Information type [1] = 7; other mark (instruction from user or other than recording / reproducing machine)

On the basis of the contents of the read information type [1], for example, the entry points whose read information type [1] is other than 1 are excluded from the search result, and only the entry points written by the RTR video recorder at the time of recording are removed. Can be left in the search results.

Alternatively, if the read information type [1] is 2 (or 2X; X is an arbitrary integer) and 3 (or 3
In the case of X), the recording location of the cell corresponding to the entry point (such as failure to correct an ECC error during reproduction) is set.
It is defective and can be removed from the search results in some cases.

If the search is completed and there are no unsearched entry points (YES in step ST412), the MPU
30 displays the search result on the monitor as shown in FIG. 42, for example (step ST414).

The MPU 30 converts the entry point playback time value of the entry point thus found into a corresponding file pointer based on the time map information (FIGS. 14 to 16) (step ST418). By using this file pointer, the entry point reproduction time value is converted into a physical address (VOBU address) by the file system, so that only the searched entry point mark portion can be selectively reproduced.

FIG. 43 is a flowchart for explaining an example of the defect registration processing in the RTR video recorder of FIG.

This defect registration processing is executed when the user wants to check a used disk.

[0370] First, the MPU 30 manages the management data (RTR).
_VMG) (step ST500), and resets the defect flag to “0” (step ST502).

[0371] This defect flag is stored in the internal RA of MPU 30.
M or a part of an internal register.

Next, reproduction of disk 10 is performed (step ST504). This reproduction is performed in step ST46 of FIG.
The processing is the same as that described above.

First, the defect flag is "0" (step ST506 YES). During reproduction, there is no defect (ECC error correction failure) (No in step ST508), and if reproduction is not completed (No in step ST516), reproduction is continued as usual (loop of steps ST504 to ST516).

When a defect (ECC error correction failure) is found during reproduction (Yes in step ST508), the number C_EPI_Ns of cell entry point information (FIG. 24) is set to 1
Incremented, entry point format EP_T
Y (FIG. 25) is set to “1”, and the entry point playback time EP_PTM (FIG. 25) shows the current PTS.
(FIG. 3) is set and the primary text information PRM_TXT is set.
The current date (date data from the clock unit 40) is set as the information date (FIG. 25) in I (step ST51).
0).

Next, primary text information PRM_TXTI
2X (X is an arbitrary integer value)
Is set (step ST512). The start point of the defect is registered by the information type set to 2X.

If the defect is found for the first time, the information type 2X is 20. If the found defect is the second, the information type 2X is 21, and if it is the third, the information type is 22.

When the registration of the defect start point is completed, the defect flag is set to "1" (step ST514).

After that, if the reproduction is not completed (step S
(No at T516), the reproduction is continued (step ST50).
4).

Immediately before this continuous reproduction, the defect flag is set to “1”.
(No in step ST506), the process enters another processing loop.

First, the presence / absence of a defect (the presence / absence of ECC error correction failure) is checked. If the defect still continues (step ST518: YES) and the reproduction is not completed (step ST526: NO), the MPU 30 transfers data notifying the user that the defective portion is being reproduced to the video decoder 64. Then, on a monitor screen (not shown), a warning character or a warning mark to the effect of "currently reproducing a defective portion" is displayed in blue background (step ST528). Alternatively, the (non-defective) I picture immediately before the defect flag is set to "1" is
If the I picture (still picture) remains in a video buffer (not shown) of 0, the I picture (still picture) can be transferred to the video decoder 64 with the intention of notifying the user that a defective portion is being reproduced.

When the defect disappears after the defect flag is set to “1” (successful ECC error correction), that becomes the end point of the defective portion.

When the reproduction of the defective portion is completed and the ECC error correction functions normally (No in step ST518), the number of cell entry point information C_EPI_Ns
(FIG. 24) is incremented by 1, the entry point format EP_TY (FIG. 25) is set to “1”, the entry point playback time EP_PTM (FIG. 25) is set to the PTS at that point (FIG. 3), Text information P
The current date (date data from clock unit 40) is set as the information date (FIG. 25) in RM_TXTI (step ST520).

Next, primary text information PRM_TXTI
3X (X is an arbitrary integer value) in the information type (Figure 25)
Is set (step ST522). The end point of the defect is registered by the information type set to 3X.

Here, if the defect is found for the first time, the information type 3X is 30. If the defect found is the second, the information type 3X is 31, and if it is the third, it is 32.

Here, 2X (2
0, 21, 22,...) Correspond to 3X (3
0, 31, 32, ...). That is, for the first defect, the information types of the entry points of the start point and the end point are “20” and “30”.
Are assigned.

When the registration of the defect end point is completed, the defect flag is reset to "0" (step ST524).

Thereafter, if the reproduction is not completed (step S
(No at T526), the reproduction is continued (step ST50).
4).

Since the defect flag is now “0”, the process proceeds to step STST50 until reproduction of a new defective portion is started.
The loop of 4 to 516 is executed.

When reproduction is completed without any defect being found (No in step ST508, step ST516)
Yes), information type 2X is not registered, information type 3
Only X is registered (step ST522). In this case, the above-mentioned pair of entry points is not established. This is a record that there was no defect during reproduction of the disk.

FIG. 44 shows an example of an entry point when two defects are found by the processing of FIG.

Steps ST512 and ST5 in FIG.
22 (PRM_T in FIG. 25)
XTI), it is possible to determine in advance what part of the disc has a defect and how to reproduce that part. Therefore, a menu that allows the user to select a method of reproducing the defective portion is desired. FIG. 45 shows an example of such a defect management menu.

In other words, even if there is a defect and the MPEG block noise is large (or the digital audio is liable to be distorted and often interrupted), if the user wants to reproduce the content of the part only to the extent that the content can be confirmed, the user is prompted You can select a playback method called "complete video playback".

If the defect cannot be viewed severely, a reproduction method of "skip that portion and display a warning on the monitor with a blue screen during the skip operation" can be selected.

Alternatively, instead of the blue-back / warning display, a reproduction method of “displaying a warning with a still picture of an I-picture immediately before the occurrence of an error in the background” can be selected.

Data relating to the above-mentioned reproduction method can be registered somewhere in M_C_EPI in FIG. 25 (for example, as one type of information type).

FIG. 46 is a flow chart for explaining an example of priority deletion order registration processing in the RTR video recorder of FIG.

First, the MPU 30 reads management data (RTR_VMG, etc.) from the disk 10 (Step S).
T600). By this reading, the MPU 30 determines the information content of the playlist (FIGS. 8 to 11), the information content of the PGC (FIGS. 19 to 21), and the movie cell information M_C.
The contents of I (FIGS. 23 to 25) can be known as appropriate.

Next, MPU 30 reads the contents of movie cell entry point information M_C_EPI of all entry points from the read management data (step ST602).

That is, the MPU 30 selectively extracts entry points of the entry point format EP_TY = “01b” (with primary text information PRM_TXTI) from the M_C_EPI (FIG. 25) for each entry point. Next, primary text information PRM_TXT
I is read, and the information type [1] of the entry point is read.

[0400] The description content of this information type [1] is as follows: information type [1] = 0; user mark (user registers entry point) information type [1] = 1; Registration) information type [1] = 2; defect start mark information type [1] = 3; defect end mark information type [1] = 4; reproduction start mark information type [1] = 5; reproduction end mark information type [1] ] = 6; non-erasable mark Information type [1] = 7; other marks (user, instructions other than from recording / reproducing machine, etc.).

If the read information type [1] is 4 (reproduction start mark) or 6 (non-erasable mark) (YES in step ST603), MPU 30 further reads information date and text information from primary text information PRM_TXTI. (Step ST604).

If the read information type [1] is neither 4 nor 6 (NO in step ST603), step S603 is executed.
T604 is skipped.

The above M_C_EPI information reading process (ST
Steps 602 to ST604) are repeated while there is an unprocessed entry point (No in step ST606).

[0404] By repeating this process, the MPU 30 can take in all the movie cell information of the entry point of the reproduction start mark or the non-erasable mark.

When there is no remaining entry point for which M_C_EPI has not been read (step ST606)
Yes), based on the read content, the MPU 30
Output the erase menu information to the monitor (step ST6)
08).

In the erase menu, as shown in FIG. 48, for example, the reproduction time (hour,
Minute), a title based on the text information of PRM_TXTI, a thumbnail image based on THM_PTRI (FIG. 10), a reproduction date and time (year, month, day, hour, minute) based on the information date of PRM_TXTI, and an information type [0] of PRM_TXTI. Rank (or non-erasable mark)
Are sorted for each item and are sorted and displayed in the order of the reproduction time (or the order of the recording time).

Here, the information type [0] includes information type [0] = 4X (erasing start point) and information type [0] = 5X as exemplified in the attribute column of the entry point in FIG.
(Erasing end point).

In this information type [0], the same value is written in order from 0 for each pair of movie cell information. However, the same value as the other pairs of movie cell information must not be written. .

For example, in FIG. 47, the entry point attribute (information type [0]) is a pair of "40" and "50", and a recorded video titled "Piece" (recording time is from 00'30 "to 00 '). 15 minutes up to 45 ")
In the erasing menu shown in FIG. 48, the erasing order is the first, so if the remaining capacity of the disc is insufficient during recording, the recorded video titled "piece" is overwritten and erased first.

The user moves the cursor to a predetermined position in the deletion order portion in the menu shown in FIG. 48 by using a cursor key operation of a remote controller (not shown) or an optional keyboard or the like to change the deletion order. Select

If the erasure order of the cell at the selected entry point is to be changed to the lower order (YES in step ST610), (for both the information type [1] = 4 and the information type [1] = 5) The order of information type [0] of the entry point to be changed is reduced by one (for example, the erasing order is reduced from the second to the third) (step ST6).
12).

On the other hand, when changing the erasing order to a higher order,
In step ST612, (information type [1] = 4
And information type [1] = 5)
The order of the information type [0] of the entry point to be changed is increased by one (for example, the erasing order is raised from the second to the first).

[0413] Instead of changing the deletion order (step ST6)
(10 No) When erasing is prohibited (step ST614)
Yes), the information type [1] of the entry point is set to 6 (non-erasable mark) (step ST61).
6).

If the change of the erasing order or the setting of the non-erasable mark is completed (YES in step ST618), the process shown in FIG.
Management data (RTR_VMG) in which information corresponding to PRM_TXTI No. 5 is written is written to the disk 10 (step ST620).

[0415] If the remaining capacity of the disk 10 becomes insufficient during this recording, the MPU 30 refers to the contents of the management data written in this manner as appropriate, in order of erasure order (when there is no erasure order, recording is performed if no erasure order is set). Disc 1 in entry point units)
Recording can be continued while part of 0 is overwritten and erased.

According to the embodiment (real-time digital video recording / reproducing system) of the present invention, for example, when reading a book, video / audio or the like is sensed as if a bookmark is being inserted between a page being read or an important part. A mark (entry point) can be written or erased at an arbitrary recording location.

If information on the mark (entry point) is appropriately recorded in a predetermined portion (movie cell entry point information, etc.) of the medium, reproduction or recording (including overwriting / erasing) using the disc is possible. To
By using this information, the following can be performed.

[0418] 1) An index of where and what program is recorded on the disc can be freely created.

[0419] That is, if the disc is set in the apparatus, the user can easily know the recorded contents of the mark location (entry point) and can start the reproduction of the location by a simple operation.

2) A desired program can be easily searched from various programs recorded on the disk.

That is, if the disc is set in the apparatus (RTR video recorder), the user can search for the title of each mark (entry point) by keyword. As a result of the search, it is possible to easily know only a desired program among various programs recorded on the disc, and to start reproduction of the portion by a simple operation.

3) Of various programs recorded on the disk, it is possible to easily specify a portion that can be erased (overwritten and recorded) (or a portion that is not desired to be erased).

That is, if the disc is set in the apparatus, the user can easily know the erasing priority or erasability / non-erasability of each mark location (entry point), and can determine the erasing order or the erasing priority of the location. Erasable / impossible can be changed with a simple operation. When a new recording is made on the disk, a program at a mark location that is not set to be unerasable is automatically overwritten and erased in accordance with the order of erasure.

4) When a part of a recorded disk becomes defective and normal reproduction of the part becomes impossible, a defective part that cannot be normally reproduced can be easily specified.

That is, if the disc is set in the apparatus, the user can easily know whether or not each mark (entry point) has a defect. Also,
If there is a defect, it is possible to arbitrarily specify a reproduction method of the portion (skip of the defective portion, blue-back display during reproduction of the defective portion, reproduction of a still image immediately before the defect until reproduction of a normal portion is started).

[0426]

As described above, according to the system according to the embodiment of the present invention, even if the capacity of the disc to be recorded is large, the user can easily manage the contents of the disc, and the user's favorite can be managed. Recording and reproduction can be performed from a location.

[Brief description of the drawings]

FIG. 1 is a view for explaining the structure of a recordable / reproducible optical disk according to an embodiment of the present invention.

FIG. 2 is an exemplary view for explaining the configuration of digital information recorded on the optical disk of FIG. 1;

FIG. 3 is an exemplary view for explaining the data structure of the video object shown in FIG. 2;

FIG. 4 is an exemplary view for explaining the data structure of the dummy pack shown in FIG. 3;

FIG. 5 is an exemplary view for explaining a file structure of digital information recorded on the optical disk of FIG. 1;

FIG. 6 shows a navigation data file (RTR) shown in FIG.
FIG. 7 illustrates a data structure of (_VMG).

FIG. 7 shows a video manager information management table (V
The figure explaining the content of (MGI_MAT).

FIG. 8 is a view for explaining a data structure of a playlist search pointer table (PL_SRPT) of FIG. 6;

9 is an exemplary view for explaining the contents of playlist search pointer table information (PL_SRPTI) in FIG. 8;

FIG. 10 is a view for explaining the contents of a playlist search pointer table (PL_SRP) of FIG. 8;

FIG. 11 shows thumbnail pointer information (THM_
FIG. 3 is a view for explaining the contents of (PTRI).

FIG. 12 is an exemplary view for explaining the data structure of a movie AV file information table (M_AVFIT) in FIG. 6;

FIG. 13 shows the movie VOB information (M_VOB) shown in FIG. 12;
The figure explaining the data structure of I).

FIG. 14 is a view for explaining the data structure of time map information (TMAPI) in FIG. 13;

15 is a time map general information (TMAP_) shown in FIG. 14;
The figure explaining the content of GI).

FIG. 16 is a view for explaining the contents of a time entry (TM_ENT) in FIG. 14;

FIG. 17 shows a user-defined PGC information table (UD
FIG. 7 is a diagram for explaining a data structure of (_PGCIT).

[Fig. 18] Fig. 6 Text data manager (TXTDT)
FIG. 3 is a diagram for explaining a data structure of (_MG).

FIG. 19 is a view for explaining the data structure of PGC information (PGCI; information of an original PGC or a user-defined PGC).

FIG. 20 is an exemplary view for explaining the contents of PGC general information (PGC_GI) in FIG. 19;

FIG. 21 is a view for explaining the contents of the program information (PGI) in FIG. 19;

FIG. 22 is a view for explaining the data structure of cell information (CI) in FIG. 19;

FIG. 23 is an exemplary view for explaining the data structure of movie cell information (M_CI) in FIG. 22;

24 is a diagram showing the general movie cell information (M_C_G) shown in FIG.
The figure explaining the content of I).

FIG. 25 is an exemplary view for explaining the contents of movie cell entry point information (M_C_EPI) in FIG. 23;

FIG. 26 is an exemplary view for explaining an example of use of primary text information (PRM_TXTI).

FIG. 27 is a view for explaining an example of correspondence between each program constituting a program set and each program part constituting a playlist.

FIG. 28: User-defined PGC (or original PG)
C) playback start time / playback end time of cells constituting
The movie video object (RTR_MOV.
FIG. 3 is a diagram for explaining an example of correspondence between VOBs constituting VROs and offset addresses for VOBUs;

29 is a block diagram illustrating an example of a configuration of an apparatus (RTR video recorder) that performs real-time recording / reproduction of a video program or the like using the recordable / reproducible optical disc of FIG.

FIG. 30 is a flowchart illustrating an example of a video recording operation in the apparatus of FIG. 29.

FIG. 31 is a flowchart illustrating an example of a reproducing operation in the apparatus of FIG. 29.

FIG. 32 is a flowchart illustrating an example of an entry point registration process in the device of FIG. 29;

FIG. 33 is a flowchart illustrating an example of an entry point automatic registration process (entry point registration at fixed time intervals) in the apparatus of FIG. 29;

FIG. 34 is a flowchart illustrating an example of text information input processing in the apparatus of FIG. 29.

FIG. 35 is a view showing an example of a text information input screen in the text information input processing of FIG. 34;

FIG. 36 is a view for explaining an example of the relationship between a video recorded on an optical disc recorded by the apparatus shown in FIG. 29, an entry point, and information (attribute, recording date and time, etc.) of the recorded video.

FIG. 37 is a view for explaining another example of the relationship between the recorded video of the optical disc recorded by the apparatus of FIG. 29, the entry point, and the information (attribute, recording date and time, etc.) of the recorded video.

FIG. 38 is a flowchart illustrating an example of a playback menu display process in the apparatus of FIG. 29.

39 is a view showing an example of a playback menu display screen in the playback menu display processing of FIG. 38.

40 is a flowchart illustrating an example of a text information search process in the device of FIG. 29.

FIG. 41 is a diagram showing an example of a search keyword input screen in the text information search process of FIG. 40.

FIG. 42 is a view showing an example of a search result display screen in the text information search processing of FIG. 40;

FIG. 43 is a flowchart illustrating an example of a defect registration process in the apparatus of FIG. 29.

FIG. 44 is an exemplary view for explaining an example of the relationship between a defective portion of a recorded image detected by the processing of FIG. 43 and an entry point;

FIG. 45 is a view showing a display example of a defective portion of a recorded video detected by the processing of FIG. 43 and a reproducing method thereof;

FIG. 46 is a flowchart for explaining an example of priority erasure order registration processing in the apparatus of FIG. 29;

FIG. 47 shows a recorded image detected by the processing of FIG. 46;
FIG. 6 is a view for explaining an example of the relationship between an entry point and information (attributes, recording date and time, etc.) of recorded video.

48 is a view showing a display example of information (recording time, title, thumbnail, last reproduction date and time, etc.) of the recording video detected by the processing of FIG. 46 and its erasing order.

[Explanation of symbols]

10: recordable / reproducible optical disk (DVD-RAM, D
VD-RW or DVD-R); 11 cartridge (in the case of DVD-RAM); 14 transparent substrate (polycarbonate); 16 light reflecting layer; 17A first information recording layer (translucent ROM layer or phase change recording) RAM layer); 17B
... second information recording layer (phase change recording RAM layer or dummy layer); 19 ... read surface; 20 ... adhesive layer; 22 ... center hole; 24 ... clamping area; 25 ... information area;
6 Lead-out area; 27 Lead-in area; 2
8 Data recording area; 30 Microcomputer block (MPU / ROM / RAM); 32 Disk drive; 34 Temporary storage unit; 36 Data processor;
8: System time counter STC; 40: Clock section; 4
2 AV input unit; 44 TV tuner (terrestrial / satellite broadcast tuner); 46 AV output unit; 48 various information display units (liquid crystal or fluorescent display panel); 50 encoder unit; 52 ADC; Video encoder; 54 Audio encoder; 55 Sub-picture encoder; 56
Formatter; 57 Buffer memory; 60 Decoder; 62 Separator; 63 Memory; 64 Video decoder; 65 Sub-picture decoder; 66 Video processor; 67 Video DAC;
69 audio DAC; 70 volume / file structure area; 100 information input unit.

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04N 5/85 H04N 5/85 Z 5/92 5/92 H 5/93 5/93 G (72) Inventor Shinichi Kikuchi 3-3-9, Shimbashi, Minato-ku, Tokyo F-term (reference) in Toshiba AV EE Co., Ltd. 5C052 AA02 AB04 AC08 CC11 DD04 5C053 FA25 GB06 GB38 JA03 JA07 JA16 JA21 LA07 5D044 AB05 AB07 BC04 CC04 DE17 DE24 DE49 DE57 EF05 FG18 5D077 AA30 CB06 DC16 DC22 EA31 5D110 AA19 BB06 DA04 DA12 DB02 DE06 EA07

Claims (5)

[Claims] A volume area including a management area and a data area, wherein the data area is configured to be capable of storing data divided into one or more objects, and each of the objects is composed of one or more data units; The data unit is configured to store audio information to be reproduced in one or more packs, and the management area is configured to store management information for managing the object; Is configured to be able to store program chain information that specifies the order in which objects are reproduced.
In the recordable / reproducible information recording medium configured to store the above cell information, the cell information is configured to be able to store entry point information for designating a reproduction position in an object, and the entry point information , A digital information medium characterized in that primary text information relating to an entry point can be stored. 2. The management information includes: a storage area for user-defined program chain information in which a user defines a reproduction order of data stored in the data area; a playlist search pointer for specifying the user-defined program chain information; The medium according to claim 1, wherein the playlist search pointer is configured to be able to store text information similar to the primary text information. 3. The program chain information is configured to store one or more pieces of program information, and the program information is configured to store text information similar to the primary text information. The medium according to claim 1 or 2. 4. The medium according to claim 1, wherein the entry point is accompanied by the primary text information. 5. An apparatus or system configured to record information or reproduce recorded information by using the medium according to claim 1. Description: