JP2001101834A - Optical disk, optical disk recording and reproducing device, and optical disk recording and reproducing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording and reproducing device that can reproduce a disk from arbitrary plunging points in reproduction routes having plural logical meanings to be performed in an optical disk recording and reproducing device. SOLUTION: This optical disk recording and reproducing device has independent plural reproduction route information and management information of plural reproduction plunging points (entry points) for every reproduction route information and realizes the utilizing of the randomness peculiar to disks.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a readable / writable optical disk, a recording / reproducing apparatus, and a recording / reproducing method. In particular, the present invention relates to an optical disk on which multimedia data including moving image data, still image data, and audio data is recorded, and a recording and reproducing apparatus and a recording and reproducing method for the optical disk.

[0002]

2. Description of the Related Art In the field of rewritable optical disks, the upper limit of which is about 650 MB, a phase change disk DVD-RAM having a capacity of several GB has appeared. Digital A
DVD-RAM is expected not only as a computer application but also as a recording / playback medium in AV, in conjunction with the practical use of MPEG (MPEG2) which is a coding standard of V data. In other words, it is expected to spread as a medium that replaces the magnetic tape, which is a conventional typical AV recording medium.

(Description of DVD-RAM) In recent years, the density of rewritable optical disks has been increased, and not only computer data and audio data but also image data can be recorded.

For example, a guide groove on an uneven surface is conventionally formed on a signal recording surface of an optical disk.

Conventionally, signals were recorded only on the convex or concave portions. However, signals can be recorded on both convex and concave portions by the land group recording method. As a result, the recording density was approximately doubled (see, for example, JP-A-8-7282).

Further, a zone CLV system which simplifies the control of the CLV system (constant linear velocity recording) effective for improving the recording density and facilitates its practical use has been devised and put into practical use (for example, Japanese Patent Laid-Open No. -93873).

[0007] It is a major task in the future how to record AV data including image data using these optical disks aiming at increasing the capacity and to realize performances and new functions that greatly exceed conventional AV equipment.

With the advent of such a large-capacity and rewritable optical disk, it is conceivable that AV recording and reproduction will be mainly performed by optical disks instead of conventional tapes. The transition of recording media from tape to disk has various effects on the functions and performance of AV equipment.

[0009] The greatest feature in the transition to a disk is a significant improvement in random access performance. In the case of random access to the tape, it usually takes several minutes to rewind one tape. This is orders of magnitude slower than the seek time (several tens of ms or less) in optical disk media. Thus, tape cannot be a random access device in practice.

With such random access performance, distributed recording of AV data, which was impossible with a conventional tape, has become possible with an optical disk.

FIG. 38 is a block diagram of a drive device of the DVD recording device. In the figure, reference numeral 11 denotes an optical pickup for reading data from a disk, and reference numeral 12 denotes an ECC (error).
a correcting code) processing unit, 13 is a track buffer, 14 is a switch for switching input / output to and from the track buffer, 15 is an encoder unit, 16 is a decoder unit, and 17 is an enlarged view of a disk.

As shown in FIG. 17, data is recorded on a DVD-RAM disk with 1 sector = 2 KB as a minimum unit. Also, assuming that 16 sectors = 1 ECC block,
The ECC processing unit 12 performs an error correction process.

The track buffer shown in FIG.
A buffer for recording AV data at a variable bit rate in order to more efficiently record AV data on a RAM disk. While the read / write rate to the DVD-RAM (Va in the figure) is a fixed rate, the bit rate (Vb in the figure) of the AV data changes according to the complexity of the content (image in the case of video). Therefore, it is a buffer for absorbing the difference between the bit rates. For example,
This is unnecessary when the AV data is set at a fixed bit rate like a video CD.

If the track buffer 13 is used more effectively, it is possible to arrange AV data discretely on a disk. This will be described with reference to FIG.

FIG. 39A shows an address space on a disk. As shown in FIG. 39 (a), when AV data is recorded separately in a continuous area of [a1, a2] and a continuous area of [a3, a4], while the seek is performed from a2 to a3, By supplying the data stored in the buffer to the decoder section, continuous reproduction of AV data becomes possible. FIG. 39B shows the state at this time.
It is.

The AV data whose reading has been started from a1 starts to be input to the track buffer and output from the track buffer at time t1, and the input rate (Va) to the track buffer and the output rate (Vb) from the track buffer. The data is accumulated in the track buffer by the rate difference (Va-Vb). This state is a
2 (time t2). Assuming that the amount of data stored in the track buffer during this time is B (t2), B (t2) stored in the track buffer is consumed and supplied to the decoder until time t3 when reading of a3 can be started. Good.

In other words, if the data amount ([a1, a2]) to be read before the seek is at least a certain amount, continuous supply of AV data is possible even when a seek occurs.

In this embodiment, an example in which data is read from a DVD-RAM, that is, in the case of reproduction, has been described.
-Writing data to the RAM, that is, recording, can be similarly considered.

As described above, in a DVD-RAM, continuous reproduction / recording is possible even if AV data is dispersedly recorded on a disk as long as data of a predetermined amount or more is continuously recorded.

(Explanation of MPEG) Next, the AV data will be described.

As described above, the AV data to be recorded on the DVD-RAM is MPEG (ISO / IEC13818).
Use international standards called.

Even a DVD-RAM having a large capacity of several GB cannot be said to have a sufficient capacity to record uncompressed digital AV data as it is. Therefore, a method of compressing and recording AV data is required.
MPEG (ISO / IE) is used as a compression method for AV data.
C13818) has become widespread in the world. Recent L
MPEG technology (decompression / decompression)
Compression LSI) has come into practical use. This has enabled MPEG expansion / compression in DVD recording devices.

MPEG has the following two main features to realize highly efficient data compression.

First, in the compression of moving image data,
In addition to the conventional compression method using spatial frequency characteristics, a compression method using time correlation characteristics between frames has been introduced. In MPEG, each frame (also referred to as a picture in MPEG) is defined as an I picture (intra-frame coded picture), a P picture (picture using intra-frame coding and a reference relationship from the past), and a B picture (intra-frame coded picture). Data using a reference relationship from the past and the future).

FIG. 40 is a diagram showing the relationship between I, P, and B pictures. As shown in FIG. 40, the P picture refers to the closest I or P picture in the past, and the B picture refers to the closest I or P picture in the past and the future, respectively. Also, as shown in FIG. 40, since the B picture refers to a future I or P picture, a phenomenon occurs in which the display order of each picture does not match the order of the compressed data (coding order). .

The second feature of MPEG is that dynamic code amount allocation according to the complexity of an image can be performed on a picture basis. The MPEG decoder has an input buffer,
By storing data in this decoder buffer in advance, a large amount of code can be allocated to a complicated image that is difficult to compress.

The audio data used in the DVD-RAM can be selected from three types: MPEG audio for data compression, Dolby Digital (AC-3) and uncompressed LPCM. Dolby Digital and LPCM
Has a fixed bit rate, but MPEG audio is not as large as a video stream, but can be selected from several sizes in audio frame units.

Such AV data is multiplexed into one stream by a method called an MPEG system. FIG.
FIG. 1 shows the configuration of an MPEG system. 41 is a pack header, 42 is a packet header, and 43 is a payload. The MPEG system has a hierarchical structure called a pack or a packet. Packet is packet header 4
2 and a payload 43. The AV data is divided into appropriate sizes from the beginning and stored in the payload 43. The packet header 42 includes, as information of the AV data stored in the payload 43, an ID (stream ID) for identifying the stored data and 90.
Decoding time DTS (Decoding Time) of the data contained in the payload expressed with the accuracy of kHz
e Stamp) and display time PTS (Presen)
station Time Stamp (D if decoding and display are performed simultaneously like audio data)
TS is omitted) is recorded. A pack is a unit that combines a plurality of packets. In the case of a DVD-RAM, one pack is used for each packet, so the pack is composed of a pack header 41 and a packet (packet header 4
2 and payload 43). In the pack header, the time at which the data in this pack is input to the decoder buffer is represented by an SCR (S
system Clock Reference) is recorded.

Such an MPEG system stream is
In the VD-RAM, one pack is divided into one sector (= 2048).
Record as B).

Next, a decoder for decoding the above-described MPEG system stream will be described. FIG. 42 shows a decoder model (P-ST) of the MPEG system decoder.
D). STC 51 is a reference time in the decoder
(System TimeClock), 52 is a demultiplexer for decoding a system stream, that is, demultiplexing, 53 is an input buffer of a video decoder, 54 is a video decoder, 55 is a data order generated between I, P and B pictures. Buffer to temporarily store I and P pictures in order to absorb the difference between the display order and the display order; 56, a switch for adjusting the output order of I, P pictures and B pictures in the reorder buffer; 57, an input to the audio decoder The buffer 58 is an audio decoder.

Such an MPEG system decoder processes the above-mentioned MPEG system stream as follows. When the time of the STC 51 matches the SCR described in the pack header, the demultiplexer 52 inputs the pack. The demultiplexer 52 decodes the stream ID in the packet header and transfers the data of the payload to the decoder buffer for each stream. Also, the PTS and DTS in the packet header are extracted. The video decoder 54 sets the time of the STC 51 and D
At the time when the TS matches, the picture data is taken out from the video buffer 53 and subjected to decoding processing, the I and P pictures are stored in the reorder buffer 55, and the B picture is displayed and output as it is. The switch 56 is connected to the video decoder 54
Are the I and P pictures decoded by
Tilt to the reorder buffer 55 side to reorder buffer 55
Is output, and in the case of a B picture, it is tilted to the video decoder 54 side. The audio decoder 58, like the video decoder 54,
At the time when the PTS coincides with the PTS (there is no DTS in the case of audio), the data for one audio frame is extracted from the audio buffer 57 and decoded.

Next, a method of multiplexing the MPEG system stream will be described with reference to FIG. FIG. 43 (a)
43 is a video frame, FIG. 43 (b) is a video buffer, FIG. 43 (c) is an MPEG system stream, FIG.
(D) shows audio data. The horizontal axis shows a time axis common to each figure, and each figure is drawn on the same time axis. In the state of the video buffer, the vertical axis indicates the buffer occupancy (the amount of data stored in the video buffer), and the thick line in the figure indicates the temporal transition of the buffer occupancy. The slope of the bold line corresponds to the video bit rate, indicating that data is being input to the buffer at a constant rate. The fact that the buffer occupancy is reduced at regular intervals indicates that data has been decoded. The intersection of the diagonal dotted line and the time axis indicates the start time of data transfer of the video frame to the video buffer.

Hereinafter, a complicated image A in video data will be described as an example. As shown in FIG. 43 (b), since the image A requires a large amount of code, the data transfer to the video buffer must be started at time t1 in the figure before the decoding time of the image A. (The time from data input start time t1 to decoding is called vbv_delay) As a result, AV data is multiplexed at the position (time) of the shaded video pack. On the other hand, the transfer of audio data that does not require dynamic code amount control such as video does not need to be particularly advanced earlier than the decode time, so that it is common to multiplex the data slightly before the decode time. . Therefore, the video data and the audio data reproduced at the same time are multiplexed in a state where the video data precedes. In MPEG, the time during which data can be stored in a buffer is limited, and it is defined that all data except for still image data must be output from the buffer to the decoder within one second after being input to the buffer. ing. Therefore, the difference in multiplexing of the video data and the audio data is at most 1 second (strictly speaking, there may be a further shift by the reordering of the video data).

In the present embodiment, video precedes audio, but in theory, audio can precede video. When a simple image having a high compression ratio is prepared for video data and the audio data is unnecessarily quickly transferred, such data can be intentionally created. However, MPE
Due to the constraint of G, a maximum of 1 second can precede.

(Explanation of Video CD) Next, a video CD having the concept of a playback jump point will be described.

The video CD is a standard released in 1993, and the following year in 1994, a Ver 2.0 standard incorporating a playback control function and the like is released. In a video CD, it is possible to record moving images compressed by MPEG1 for a maximum of 74 minutes.
Up to 2000 high-definition still images (704 x 480 dots)
It is also possible to record more than one. In addition, it is possible to create a simple menu with the playback control function, to display only a necessary part according to the purpose, or to control the display content by the user's selection.

A video CD can record an absolute address on a disk as an entry point. An entry point is a place on the playback path where jump playback is possible. The entry point can be realized by using address information and time information. By using the entry point, when the entry point is reached in the reproduction path, the entry point jumps to the recorded absolute address, The operation of the reproducing apparatus such as performing the jump play can be performed.

However, since a video CD can have only one entry point corresponding to a stream on a one-to-one basis, independent jump points cannot be used for a plurality of paths.

In addition, since a video CD is a non-writable medium, the user can freely create an entry point.
Cannot be deleted. Therefore, the user cannot create a reproduction path or an entry point with a logical meaning, and cannot make full use of the random accessibility of the disc.

(Description of Digital VTR) Next, a digital VTR, especially a DVC (Digital
l Video Cassette Tape Rec
order) will be described.

DVC is a standard published in 1994, and uses DCT (Discrete C) for image compression signal processing.
online Transform) and VLC (Var
The present invention employs an I.L.L. Length Cording, and realizes recording and reproduction at 19 to 30 Mb / s.

In the DVC, a track number (Title Time) indicating the recording time from the recording start frame at the beginning of the tape is used as subcode data together with video data.
eCode), time code (R
ec Date), and a time code (Rec Time) representing hours, minutes, and seconds at the time of recording can be recorded. Therefore, by detecting time code discontinuities, they can be used as entry points.

However, since it has no management information like a computer, it has a disadvantage that it is not possible to freely set an arbitrary time as an entry point and perform reproduction.

Also, since DVC is a tape medium, it has poor random access performance and cannot have a plurality of reproduction paths.

In order to hold a plurality of playback paths and arbitrary entry points on a medium such as DVC, a memory for recording the data is required in the playback device. , That information is not available.

The advent of DVD-RAM has solved the problem of random access performance in DVC,
This means the possibility of a new consumer AV device in which entry points can be freely handled for each of a plurality of routes.

[0047]

SUMMARY OF THE INVENTION The present invention solves the following problems which are hindered in maximizing the performance of a DVD-RAM expected as a next-generation AV recording medium described in the above prior art, and DV which is the largest and favorite application of possible large capacity optical disc DVD-RAM
This implements a D recording device.

The biggest problem in recording a jump point and performing playback using the jump point in a plurality of playback paths in a DVD recording device is that a random access characteristic unique to a disc, which cannot be achieved with a tape medium, is achieved by a plurality of playback methods. How to set an individual diving point in each reproduction path for the path.

[0049]

Means for Solving the Problems To solve the above problems, the invention according to the present invention has the following contents.

According to the present invention, there is provided a program stream comprising a video stream, and management information for managing the program stream, wherein the management information includes information for specifying a start time of the program stream. C_V
_S_PTM), information (C_V_E_PTM) that specifies the end time of the program stream, and entry point information (M_C_EPI / S_) that accesses an arbitrary point of the program stream and reproduces from the arbitrary point.
C_EPI).

Thus, it is not necessary to include the entry point information in the program stream itself.

According to a second aspect of the present invention, there is provided an optical disk reproducing apparatus for reproducing the optical disk according to the first aspect, comprising: holding means (7802) for reading and holding entry point information from the optical disk; A decoder (7806) for generating address information during reproduction of the program stream, a conversion means (7802) for converting the address information into point information of the program stream, and an entry point information closest to the point information. Selecting means (7802); converting means (7802) for converting the selected entry point information into address information; and driving means (7808) for jumping to a position based on the converted address information. To decode and play from the jump position An optical disk reproducing apparatus according to symptoms.

According to a third aspect, there is provided the optical disk reproducing method for reproducing an optical disk according to the first aspect, wherein the entry point information is read from the optical disk, held, the program stream is decoded, and the program stream is reproduced. Generating address information of the program stream, converting the address information into point information of the program stream,
Selecting the entry point information closest to the point information, converting the selected entry point information into address information, jumping to a position based on the converted address information, decoding from the jumped position, and reproducing. And an optical disc reproducing method.

According to a fourth aspect of the present invention, there is provided the optical disk recording apparatus for recording the optical disk according to the first aspect, wherein the interface (78) receives input of entry point information.
01) and means for generating address information at the time of receiving the entry point information (7804, 7806)
Conversion means (7802) for converting the address information into entry point information of the program stream;
An optical disc recording apparatus comprising: a holding unit (7802) for temporarily holding the entry point information; and a drive unit (7808) for recording the held entry point information on an optical disc.

According to a fifth aspect of the present invention, there is provided the optical disk recording method for recording an optical disk according to the first aspect, wherein the input point information is input, and the address information at the time when the entry point information is received is generated. An optical disc recording method characterized by converting address information into entry point information of the program stream, temporarily holding the entry point information, and recording the held entry point information on an optical disc.

[0056]

BEST MODE FOR CARRYING OUT THE INVENTION DV which is an embodiment of the present invention
The present invention will be described in detail using a D recording device and a DVD-RAM.

(Logic Configuration on DVD-RAM) First, the DV
The logical configuration on the D-RAM will be described with reference to FIG. FIG. 1 shows the physical sector addresses on the disk and the data structure on the disk as seen through the file system.

At the head of the physical sector address, there is a lead-in area, in which reference signals necessary for stabilizing the servo, identification signals for other media, and the like are recorded.
Following the lead-in area is a data area. Logically valid data is recorded in this part. Finally, there is a lead-out area where reference signals similar to those in the lead-in area are recorded.

At the head of the data area, management information for a file system called volume information is recorded. The description of the file system is omitted because it has no direct relation to the contents of this patent.

By passing the data through the file system, the data in the disk can be handled as directories and files as shown in FIG.

As shown in FIG. 1, all data handled by the DVD recording device is DVD_RT directly under the ROOT directory.
It is placed under the AV directory.

The file handled by the DVD recording device is roughly 3
One type of management information file, a plurality of (at least one) AV files, and one copy of the management information file.

The AV file is an RTR_ for recording a moving image.
MOVIE. RTR_STIL for recording VRO file and still image and audio data recorded simultaneously with still image
L. VRO file and VR that records only audio data
_AUDIO. A VRO file is recorded.

FIG. 2 shows RTR_MOVI in which a moving image is recorded.
E. FIG. It is a block diagram of a VRO file. As shown in FIG. 2, RTR_MOVIE. MPO is included in the VRO file
G_VOB (Movi) which is a program stream of G
e Video Object) are arranged in the recording order.

M_VOB is a VOBU in which 0.4 second to 1.0 second is defined as one unit based on the video playback time.
(Video Object Unit).

VOBU includes V_PCK (video pack), A_PCK (audio pack), and SP_PC
K (sub-picture packs), each pack being 2
It is configured in KB units.

The video data in the VOBU includes at least one GOP (Group of Pict).
ures). GOP is MPEG
This is a video decoding unit, and is composed of a plurality of P and B pictures with an I picture at the head.

FIG. 3 is a diagram showing an example of RTR_STILL. It is a block diagram of a VRO file. As shown in FIG. 3, RTR_STILL. The VRO file includes S_VOB (Still Picture Vid) which is an MPEG program stream for a still image.
eo Object) are arranged in the recording order.

A major difference from M_VOB is that, in addition to recording still image data instead of moving image data, moving image data and audio data are not multiplexed with each other, but still image data (Video part) Later, audio data (Audio part) is recorded subsequently.

S_VOB is composed of one VOBU, and VOBU is composed of V_PCK, A_PCK and SP_PCK.

VR_AUDIO. VRO includes MPEG
Audio data of the program stream (Audio p
art) alone. (AV Data and Management Information) Next, the relationship between the above-described M_VOB and S_VOB and the management information will be described with reference to FIG.

As described above, there are two types of AV data: M_VOB for moving images and S_VOB for still images. M_VOB is the management information M for each M_VOB.
_VOBI exists, and M_VOBI has a corresponding M_V
OB attribute information is recorded. In the case of S_VOB, if management is performed for each individual S_VOB, the amount of management information increases. Therefore, a group S_V
Management information S_VOGI exists for each OG. S_VOG
In I, attribute information of the corresponding S_VOB group is recorded.

What is important here is that there is no linearity between time and data amount in MPEG stream data. As mentioned earlier, in an MPEG stream,
In order to realize highly efficient compression, a compression method using a time correlation characteristic or a compression method using a variable length coding method called VBR is performed, so that time and data amount, that is, address information are unique. Does not correspond to

Therefore, M_VOBI has a filter (TMAP) for converting time and address, and
In VOGI, a filter (S_VOB Entry) for converting a still image number and an address in a group is used.
s).

Next, the management information of the reproduction path will be described.

A reproduction path is a sequence of cells (PGC) indicating a partial section or an entire section of M_VOB and S_VOG.
Is defined as

This reproduction path is composed of an original PGC referring to all AV data in the disc and a user-defined PGC (a plurality of user-defined PGCs) in which the user selects a desired one from the AV data in the disc and defines a reproduction order. Is possible).

The former original PGC is also called a program set (Program Set), in which a program (Program) in which a plurality of cells are logically bundled.
m).

The latter user-defined PGC is also called a play list (Play List), and is composed of an original PGC.
Unlike this, there is no program in between. (Management Information File) Next, the management information file "RTR.IFO"("VR_MANG") will be described with reference to FIGS.
R. In some cases, “RTO_IFG” is displayed.) “RTR_VMG” (FIG. 5) VR_MANGR. RTR_VM in the IFO file
Management information called G (real-time recorded video management) is recorded. This RTR_VMG is RTR_V
MGI, M_AVFIT, S_AVFIT, ORG_P
GCI, UD_PGCIT, TXTDT_MG, MNF
It is composed of seven tables of IT.

Next, details of each table will be described. "RTR_VMGI" (FIG. 6) RTR_VMGI (real-time recorded video management information)
Is composed of VMGI_MAT and PL_SRPT. “VMGI_MAT” (FIG. 6) VMGI_MAT (video management information management table)
The following information is recorded as information on the entire disc. The playback device and the recording device are initially VMGI
By reading _MAT, it is possible to obtain rough configuration information of the disc.

VMG_ID (Video Management Identifier) An identifier “DVD_RTAV_VMG” indicating that video recording data is recorded on this disc.
0 "is recorded.

RTR_VMG_EA (RTR_VMG end address) The end address of RTR_VMG is recorded.

VMGI_EA (VMGI end address) The end address of VMGI is recorded.

VERN (version number) The version number of the recording format of the video recording data is recorded according to the format shown in FIG.

TM_ZONE (time zone) A time zone used by all date and time information recorded in this disc is recorded. TM_ZONE is Fig. 7
As shown in, TZ_TY (time zone type) indicating whether the standard of the date and time information uses the universal time, Greenwich Mean Time, or the local standard time.
And TZ_OFF to record the time difference from Greenwich Mean Time
SET (time zone offset).

STILL_TM (Still time) The still time length when displaying a still image without sound is recorded.

CHRS (Character Set Code for Primary Text) A character set code for primary text described later is recorded.

RSM_MRKI (resume marker management information) Time information of the video whose reproduction was stopped last is recorded.

DISC_REP_PICTI (disk representative still image management information) Time information of a still image representing this disk is recorded.

DISC_REP_NM (disk representative name) A character string representing this disk is recorded.

M_AVFIT_SA (M_AVFIT start address) The start address of M_AVFIT is recorded. M_
When accessing the AVFIT, seek is performed up to this start address.

S_AVFIT_SA (S_AVFIT start address) The start address of S_AVFIT is recorded. S_
When accessing the AVFIT, seek is performed up to this start address.

ORG_PGCI_SA (ORG_PGC
(I start address) The start address of ORG_PGCI is recorded. O
When accessing RG_PGCI, seek is performed up to this start address.

UD_PGCIT_SA (UD_PGCI
(T start address) The start address of UD_PGCIT is recorded. U
When accessing D_PGCIT, seek is performed up to this start address.

TXTDT_MG_SA (TXTDT_M
G start address) The start address of TXTDT_MG is recorded. T
When accessing XTDT_MG, seek is performed up to this start address.

MNFIT_SA (MNFIT start address) The start address of MNFIT is recorded. MNFI
When accessing T, seek is performed up to this start address. “PL_SRPT” (FIG. 8) PL_SRPT (playlist search pointer table) is a table composed of PL_SRPTI and n PL_SRPs.

"PL_SRPTI" (FIG. 8) The following information for accessing the PL_SRP is recorded in the PL_SRPTI (playlist search pointer table information).

PL_SRP_Ns (PL_SRP number) The number of PL_SRP is recorded.

PL_SRPT_EA (PL_SRPT end address) The end address of this PL_SRPT is recorded.

“PL_SRP” (FIG. 8) PL_SRP (playlist search pointer) contains a user-defined PG that is the actual data of this playlist.
The following information for accessing C is recorded.

PL_TY (Playlist Type) As a value for identifying the type of the playlist, one of the following is recorded in accordance with the description format shown in FIG.

0000b: Moving image only 0001b: Still image only 0010b: Moving image and still image mixed PGCN (PGC number) The PGC number corresponding to this play list is recorded. The PGC number is a recording order of PGC information in UD_PGCIT described later. PL_CREATE_TM (playlist recording date and time) Information on the date and time when this playlist was created is recorded in accordance with the description format shown in FIG.

PRM_TXTI (Primary Text Information) Text information indicating the contents of this play list is recorded. For example, when a television program is recorded, the program name is recorded. Also, this primary text information
It is composed of a field for an ASCII code and a field for a character code set specified by the aforementioned CHRS.

IT_TXT_SRPN (IT_TXT_
(SRP number) In addition to the above-described primary text, when information indicating the content of this playlist is recorded as an option as IT_TXT, I information recorded in TXTDT_MG
IT_TXT_SR as link information to T_TXT
The P number is recorded. The IT_TXT_SRP number is a recording order in TXTDT_MG described later.

THM_PTRI (Thumbnail Pointer Information) Describes thumbnail information representing this play list. “THM_PTRI” (FIG. 8) In the THM_PTRI, the following information indicating the position of the thumbnail is recorded.

CN (cell number) A cell number including a thumbnail is recorded. The cell number is the UD_PGCI corresponding to this playlist.
Is the recording order of the cell information in the cell.

THM_PT (Thumbnail Point) When the cell indicated by the CN is a moving image cell, the display time of a video frame used as a thumbnail is recorded according to the PTM description format shown in FIG. PT
M is given according to the reference time of the time stamp described in the MPEG program stream.

If the cell indicated by the CN is a still picture cell, a still picture VOB entry number of a still picture used as a thumbnail is recorded in accordance with the S_VOB_ENTN description format shown in FIG. Still image VO
The B entry number is the recording order of the still image VOB entries in the still image VOB group indicated by this cell. “M_AVFIT” (FIG. 12) M_AVFIT (moving image AV file information table)
Management information corresponding to the moving image AV file “RTR_MOVIE.VRO” is recorded, and M_AVFITI, M_V
OB_STI and M_AVFI. “M_AVFITI” (FIG. 12) M_AVFITI (moving image AV file information table information) records the following information necessary to access M_VOB_STI and M_AVFI.

M_AVFI_Ns (number of moving image AV file information) Indicates the number of fields of the succeeding AVFI information. “0” indicates that no AVFI exists, and “1” indicates that AVFI exists. ing. Also, A
The presence or absence of VFI is determined by the RTR_
MOVIE. It also corresponds to the presence or absence of VRO.

M_VOB_STI_Ns (M_VOB_
(Number of STIs) The number of fields of the subsequent M_VOB_STI is shown.

M_AVFIT_EA (M_AVFIT end address) Records the end address of M_AVFIT. “M_VOB_STI” (FIG. 12) M_VOB_STI (moving image VOB stream information)
The following information is recorded as stream information of the moving image VOB.

V_ATR (Video Attribute) The following video attribute information is recorded in accordance with the format shown in FIG.

[0113] Video compression m
mode One of the following values for identifying the video compression mode is recorded.

00b: MPEG-1 01b: MPEG-2 TV system One of the following values for identifying a television system is recorded.

00b: 525/60 (NTSC) 01b: 625/50 (PAL) Aspect ratio One of the following values for identifying the resolution ratio is recorded.

00b: 4 × 3 01b: 16 × 9 line21_switch_1 One of the following values identifying whether closed caption data for field 1 is recorded in the video stream is recorded.

1b: recorded 0b: not recorded line21_switch_2 Any one of the following values for identifying whether the closed caption data for field 2 is recorded in the video stream is recorded.

1b: recorded 0b: not recorded Video resolution Any one of the following values for identifying the video resolution is recorded.

000b: 720 × 480 (NTSC), 720 × 576 (PAL) 001b: 702 × 480 (NTSC), 702 × 576 (PAL) 010b: 352 × 480 (NTSC), 352 × 576 (PAL) 011b: 352 × 240 (354 × 240), 352 × 240 (352 × 240) (NTSC), 544x576 (PAL) 101b: 480x480 (NTSC), 480x576 (PAL) AST_Ns (number of audio streams) The number of audio streams recorded in the corresponding VOB is recorded.

SPST_Ns (number of sub-picture streams) The number of sub-picture streams recorded in the corresponding VOB is recorded.

A_ATR0 (Audio Stream 0 Attribute) The following audio attribute information corresponding to audio stream 0 is recorded according to the format shown in FIG.

Audio coding mode One of the following values for identifying an audio compression method is recorded.

000b: Dolby AC-3 001b: MPEG audio without extension stream 010b: MPEG audio with extension stream 011b: Linear PCM Application Flag One of the following values for identifying application information is recorded.

00b: Not applicable 01b: Number of audio channels mixed 10b: Quantization / DRC with auxiliary audio When using MPEG audio, one of the following values that identify the presence or absence of DRC (dynamic range control) information is recorded. .

00b: DRC data is not included in the MPEG stream. 01b: DRC data is included in the MPEG stream. Also, when using LPCM audio, Quantiza
The following values for identifying the Tion are recorded.

00b: The following values for identifying the 16-bit fs sampling frequency are recorded.

00b: 48 kHz Number of Audio channels One of the following values for identifying the number of audio channels is recorded.

0000b: 1 channel (monaural) 0001b: 2 channels (stereo) 0010b: 3 channels 0011b: 4 channels 0100b: 5 channels 0101b: 6 channels 0110b: 7 channels 0111b: 8 channels 1001b: 2 channels (dual monaural) Bitrate One of the following values for identifying the bit rate is recorded.

[0129] 0000 0001b: 64kbps 0000 0010b: 89kbps 0000 0011b: 96kbps 0000 0100b: 112kbps 0000 0101b: 128kbps 0000 0110b: 160kbps 0000 0111b: 192kbps 0000 1000b: 224kbps 0000 1001b: 256kbps 0000 1010b: 320kbps 0000 1011b: 384kbps 0000 1100b: 448 kbps 0000 1101b: 768 kbps 0000 1110b: 1536 kbps Here, what is important is that if the corresponding audio stream is an MPEG audio stream with an extension stream, the video stream of the basic stream excluding the extension stream is important. Trait is to record only. This is because the extended stream is compressed using the variable-length code method, and cannot be represented at the fixed bit rate as described above.

A_ATR1 (Audio Stream 1 Attribute) The following audio attribute information corresponding to audio stream 1 is recorded according to the format shown in FIG. Each field is the same as A_ATR0 described above.

SP_PLT (sub-picture color palette) Color palette information for a sub-picture is recorded according to the format shown in FIG. “M_AVFI” (FIG. 15) M_AVFI (moving image AV file information) is information necessary for accessing a moving image VOB, M_AVFI_GI,
It is composed of M_VOBI_SRP and M_VOBI. “M_AVFI_GI” (FIG. 15) M_AVFI_GI (movie AV file information general information)
Has recorded therein M_VOBI_SRP_Ns.

M_VOBI_SRP_Ns (moving image VOB
(Number of information search pointers) The number of M_VOBI_SRPs is recorded. “M_VOBI_SRP” (FIG. 15) Address information for accessing each M_VOBI is recorded in M_VOBI_SRP (moving picture VOB information search pointer).

M_VOBI_SA (moving picture VOB information start address) The start address of M_VOBI is recorded, and when accessing the VOB information, it is sufficient to seek to the address indicated here. "M_VOBI" (FIG. 16) M_VOBI (moving image VOB information) is management information of moving image VOB, M_VOB_GI, SMLI, AGAPI, TM
It is composed of API and CP_MNGI. “M_VOB_GI” (FIG. 16) M_VOB_GI (moving picture VOB general information) includes moving picture V
The following information is recorded as OB general information.

VOB_TY (VOB type) VOB attribute information is recorded according to the format shown in FIG.

TE Any one of the following values for identifying the state of this VOB is recorded.

0b: Normal state 1b: Temporarily erased state A0_STATUS Any one of the following values for identifying the state of audio stream 0 is recorded.

00b: Original state 01b: Rewritten state A1_STATUS Any one of the following values for identifying the state of the audio stream 1 is recorded.

00b: Original state 01b: Rewritten state 10b: Dummy state for post-recording 11b: Post-recording state SML_FLG One of the following values for identifying whether this VOB is seamlessly reproduced with the immediately preceding VOB is recorded. .

0b: Seamless playback disabled 1b: Seamless playback enabled A0_GAP_LOC Any of the following values indicating the presence / absence of an audio playback gap in audio stream 0 and the VOBU in which the audio playback gap section is multiplexed are recorded. .

00b: No audio reproduction gap 01b: Audio reproduction gap multiplexed in first VOBU 10b: Audio reproduction gap multiplexed in second VOBU 11b: Audio reproduction gap multiplexed in third VOBU A1_GAP_LOC Audio reproduction in audio stream 1 One of the following values indicating the presence or absence of a gap and the VOBU in which the audio reproduction gap section is multiplexed is recorded.

00b: No audio playback gap 01b: Audio playback gap multiplexed in first VOBU 10b: Audio playback gap multiplexed in second VOBU 11b: Audio playback gap multiplexed in third VOBU VOB_REC_TM (VOB recording date and time) Is recorded in the PL_CRE shown in FIG.
It is recorded in the same format as ATE_TM. What is important here is that the recording date and time indicates the recording date and time of the display video frame at the beginning of the VOB. If the video frame at the beginning of the VOB changes due to editing or partial erasing, this VOB_REC_TM must also be corrected. It is. In addition, when it is desired to display the recording date and time in synchronization with the reproduction of the VOB, as often seen in a camcorder, the recording time can be obtained by adding the elapsed time in the VOB to VOB_REC_TM.

VOB_REC_TM_SUB (VOB recording date / time difference information) VOB_REC_TM which is modified when the VOB first video frame is replaced by editing or partial erasing of the VOB
This is a field for absorbing a TM error. VOB
As shown in FIG. 9, since _REC_TM has only information up to the date, month, day, hour, minute, and second, when editing or erasing with frame or field accuracy, VOB_REC is used.
Since sufficient recording accuracy cannot be obtained with only _TM, a fraction is recorded using this field.

M_VOB_STIN (M_VOB_ST
(I number) The M_VOB_STI number corresponding to this VOB is recorded. The M_VOB_STI number shown here is
This is the recording order in the above-described M_VOB_STI table.

VOB_V_S_PTM (VOB video start PTM) The display start time of this VOB is recorded at the same reference time as the time stamp in the stream.

VOB_V_E_PTM (VOB video end PTM) The display end time of this VOB is recorded at the same reference time as the time stamp in the stream. Please note that
The time stamp in the stream indicates the display start time of the frame, but in VOB_V_E_PTM,
The display end time, that is, the time obtained by adding the display period of the frame to the display start time is recorded. “SMLI” (FIG. 16) SMLI (seamless information) records the following information required for seamless playback with the immediately preceding VOB. Also, this field is the same as the SML_F described above.
It exists only when “1b” is recorded in LG.

VOB_FIRST_SCR (VOB head SCR) The SCR of the first pack of the VOB is recorded.

PREV_VOB_LAST_SCR (previous VOB final SCR) The SCR of the last pack of the previous VOB is recorded. “AGAPI” (FIG. 16) The following information necessary for processing the audio reproduction gap by the decoder is recorded in the AGAPI (audio gap information). Also, this field is used for A0_GAP_LOC or A1_GAP_LO described above.
It exists when a value other than “00b” is recorded in any of C.

VOB_A_STP_PTM (VOB audio stop PTM) The audio reproduction gap, that is, the time when the decoder temporarily stops the audio reproduction, is recorded at the same reference time as the time stamp in the stream.

VOB_A_GAP_LEN (VOB audio gap length) The time length of the audio reproduction gap is recorded with an accuracy of 90 kHz. “TMAPI” (FIG. 18) TMAPI (time map information) is TMAP_GI,
It is composed of TM_ENT and VOBU_ENT. “TMAP_GI” (FIG. 18) TMAP_GI (TMAP general information) is TM_ENT
_Ns, VOBU_ENT_Ns, TM_OFS, AD
It consists of R_OFS, and each field is as follows.

TM_ENT_Ns (TM_ENT number) The number of TM_ENT fields described later is recorded.

VOBU_ENT_Ns (VOBU_EN
(Number of T) The number of fields of VOBU_ENT described later is recorded.

TM_OFS (Time Offset) The offset value of the time map is recorded with video field accuracy.

ADR_OFS (address offset) The offset value in the AV file at the head of the VOB is recorded. "TM_ENT" (FIG. 18) TM_ENT (time entry) is composed of the following fields as access point information for each fixed interval TMU. The TMU is 600 video fields (NTSC) for NTSC and 500 video fields for PAL.

VOBU_ENTN (VOBU_ENT number) A VO including the time indicated by this TM_ENT (in the case of the Nth TM_ENT, TMUx (N−1) + TM_OFS)
The BU entry number is recorded.

TM_DIFF (time difference) The time indicated by TM_ENT and VOBU_EN described above
The difference of the display start time of the VOBU indicated by the TN is recorded.

VOBU_ADR (VOBU address) The head address of the VOBU indicated by VOBU_ENTN in the VOB is recorded. "VOBU_ENT" (FIG. 19) In VOBU_ENT (VOBU entry), the following configuration information of the corresponding VOBU is recorded in the format shown in FIG. By sequentially adding subsequent fields, it is possible to obtain the time and address information necessary for accessing a desired VOBU.

1STREF_SZ The number of packs from the first VOBU pack to the pack including the last data of the first I picture in the VOBU is recorded.

VOBU_PB_TM The playback time length of this VOBU is recorded.

VOBU_SZ The data amount of this VOBU is recorded. "S_AVFIT" (FIG. 20) S_AVFIT (still image AV file information table)
Is a still image AV file "RTR_STILL.VR
O ”is recorded, and S_AVFIT
I, S_VOB_STI, and S_AVFI. “S_AVFITI” (FIG. 20) S_AVFITI (still image AV file information table information) includes S_VOB_STI, S_AVFI, and S_AA.
The following information required to access _STI (FIG. 21) and S_AAFI (FIG. 21) is recorded.

S_AVFI_Ns (Number of Still Image AV File Information) “0” or “1” is recorded as the number of S_AVFI. This value is the number of still image AV files, that is, RT
R_STILL. It also supports the presence or absence of a VRO file.

S_VOB_STI_Ns (still image VOB
(Number of stream information) The number of S_VOB_STI described later is recorded.

S_AVFI_EA (still image AV file information end address) The end address of S_AVFI is recorded. “S_VOB_STI” (FIG. 20) S_VOB_STI (still image VOB stream information)
The following information is recorded as stream information of a still image VOB.

V_ATR (Video Attribute) As the video attribute information, Video compress
ion mode, TV system, Aspect
The ratio and the video resolution are recorded. Each field is M_VOB described above.
Same as V_ATR in _STI.

OA_ATR (Audio Stream Attribute) As audio stream attribute information, Audio c
odding mode, Application Fl
ag, Quantization / DRC, fs, Nu
mber of Audio channels is recorded. Each field is M_VOB_
Same as A_ATR0 in STI.

SP_PLT (Subpicture Color Palette) Color pallet information for subpictures is recorded. The recording format is M_VOB_STI described above.
And SP_PLT. “S_AVFI” (FIG. 24) S_AVFI (still image AV file information)
Information required to access OG, S_AVFI_
GI, S_VOGI_SRP, and S_VOGI. “S_AVFI_GI” (FIG. 24) In S_AVFI_GI (still image AV file information general information), S_VOGI_SRP_Ns is recorded.

S_VOGI_SRP_Ns (still image VO
(Number of B group search pointers) The number of fields of S_VOGI_SRP described later is recorded. “S_VOGI_SRP” (FIG. 24) S_VOGI_SRP (S_VOGI_SA is recorded in the still image VOB group information search pointer.

In S_VOGI_SA (still picture VOB group information start address), the start address of this S_VOGI is recorded. “S_VOGI” (FIG. 24) S_VOGI (still image VOB group information) is management information of a still image VOB, S_VOG_GI, S_VOB_E.
NT and CP_MNGI. “S_VOG_GI” (FIG. 24) In S_VOG_GI (still picture VOB group general information), the following information is recorded as general information of the still picture VOB group.

S_VOB_Ns (number of still image VOBs) The number of still image VOBs in the still image VOB group is recorded.

S_VOB_STIN (S_VOB_ST
S_V in which stream information of the still image VOB is recorded
The OB_STI number is recorded. S_VOB_ST
The I number is the recording order in the above-described S_VOB_STI table.

FIRST_VOB_REC_TM (head VOB recording date / time) Recording date / time information of the head still image VOB in this still image VOB group is recorded.

LAST_VOB_REC_TM (final V
(OB recording date and time) Recording date and time information of the last still image VOB in this still image VOB group is recorded.

S_VOB_SA (still picture VOB group start address) RTR_STILL. Still image VO in VRO file
The start address of the B group is recorded. “S_VOB_ENT” (FIG. 25) S_VOB_ENT (still picture VOB entry) corresponds to each still picture VOB in the still picture VOB group, and is classified into the following type A and type B depending on the presence or absence of audio. “S_VOB_ENT (Type A)” (FIG. 25) Type A is S_VOB_ENT_TY, V_PART.
_SZ, and the individual fields are as follows.

S_VOB_ENT_TY (still image VOB
Entry Type) The type information of the still image VOB is recorded in the format shown in FIG.

MAP_TY One of the following values for identifying type A or type B is recorded.

00b: Type A 01b: Type B TE One of the following values for identifying the state of the still image VOB is recorded.

0b: Normal state 1b: Temporarily erased state SPST_Ns The number of sub-picture streams in this still image VOB is recorded.

V_PART_SZ (video part size) The data amount of this still image VOB is recorded. “S_VOB_ENT (Type B)” (FIG. 25) Type B is S_VOB_ENT_TY, V_PART.
_SZ, A_PART_SZ, A_PB_TM
And the individual fields are as follows:

S_VOB_ENT_TY (still image VOB
Entry type) Type information of this still image VOB is recorded. Each field is the same as the type A described above.

V_PART_SZ (Video Part Size) The data amount of the video part in the still picture VOB is recorded.

A_PART_SZ (audio part size) The data amount of the audio part in the still picture VOB is recorded.

A_PB_TM (Audio Reproduction Time) The reproduction time length of the audio part in the still picture VOB is recorded. “S_AAFI” (FIG. 27) S_AAFI (still image additional audio file information) is
AAFI_GI, S_AAGI_SRP, S_AAGI
Consists of “S_AAFI_GI” (FIG. 27) In S_AAFI_GI (still image additional audio file information general information), the following information is recorded as general information of still image additional audio file information.

S_AAGI_SRP_Ns (Number of still image additional audio group information) S_AAGI_SRP in still image additional audio file information
The number is recorded. “S_AAGI_SRP” (FIG. 27) In S_AAGI_SRP (still image additional audio group information search pointer), the following information is recorded as a search pointer for still image additional audio group information.

S_AAGI_SA (still image additional audio group information start address) The start address of S_AAGI_SA in the still image additional audio file information is recorded. “S_AAGI” (FIG. 28) S_AAGI (still image additional audio group information) is
It is composed of AAG_GI and AA_ENT. "S_AAG_GI" (FIG. 28) S_AAG_GI (still picture additional audio group general information)
Has the following information recorded as general information of the still image additional audio group.

AA_ENT_Ns The number of AA_ENTs in the still image additional audio group is recorded.

S_AA_STIN (FIGS. 21 and 28) The S_AA_STI number in the still image additional audio group is recorded.

S_AAG_SA The start address of S_AAG in the still image additional audio group is recorded. “AA_ENT” (FIG. 28) The following information is recorded in AA_ENT (additional voice entry) as an entry of additional voice.

AA_TY (FIG. 29) The type of each additional sound is recorded.

AA_PART_SZ The size of each additional sound is recorded.

AA_PART_PB_TM Playback time of each additional sound is recorded. "UD_PGCIT" (FIG. 30) UD_PGCIT (user-defined PGC information table)
Are UD_PGCITI, UD_PGCI_SRP, U
D_PGCI. "UD_PGCITI" (FIG. 30) UD_PGCITI (user-defined PGC information table information) records the following information that constitutes a user-defined PGC information table.

UD_PGCI_SRP_Ns (number of user-defined PGC information search pointers) The number of UD_PGCI_SRP is recorded.

UD_PGCIT_EA (user-defined PG
C information table end address) The end address of UD_PGCIT is recorded. “UD_PGCI_SRP” (FIG. 30) UD_PGCI_SRP (user-defined PGC information search pointer) records UD_PGCI_SA.

UD_PGCI_SA (User-defined PGC
(Information start address) In UD_PGCI_SA, the start address of UD_PGCI is recorded. When accessing this PGCI,
It is only necessary to seek to the recorded address. “UD_PGCI” (FIG. 30) The details of UD_PGCI (user-defined PGC information) will be described later in PGCI. “ORG_PGCI” (FIG. 5) Details of ORG_PGCI (original PGC information)
This will be described with PGCI described later. “TXTDT_MG” (FIG. 31) TXTDT_MG (text data management) is a TXTD
It is composed of TI, IT_TXT_SRP, and IT_TXT. The individual fields are as follows. "TXTDTI" (FIG. 31) TXTDTI (text data information) is CHRS, I
It is composed of T_TXT_SRP_Ns and TXTDT_MG_EA.

CHRS (Character Set Code) A character set code used in IT_TXT is recorded.

IT_TXT_SRP_Ns (IT_TXT
(Number of T search pointers) The number of IT_TXT_SRP is recorded.

TXTDT_MG_EA (text data management end address) The end address of TXTDT_MG is recorded. "IT_TXT_SRP" (FIG. 31) IT_TXT_SRP (IT_TXT search pointer)
, The following information is recorded as access information to the corresponding IT_TXT.

IT_TXT_SA (IT_TXT start address) The start address of IT_TXT is recorded. This I
When accessing T_TXT, it is sufficient to seek to this address.

IT_TXT_SZ (IT_TXT size) The data size of IT_TXT is recorded. This I
When it is desired to read T_TXT, it is sufficient to read data of this size. "IT_TXT" (FIG. 31) IT_TXT is IDCD (identification code), TXT (text) and TMCD (end code) corresponding to IDCD.
Are set as one set, and a plurality or one set is constituted. If there is no TXT corresponding to the IDCD, the IDCD and the TMCD may be omitted and one set may be omitted. Also,
The IDCD is defined as follows.

Genre code 30h: Movie 31h: Music 32h: Drama 33h: Animation 34h: Sports 35h: Documentary 36h: News 37h: Weather 38h: Education 39h: Hobbies 3Ah: Entertainment 3Bh: Arts (drama, opera) Source code 60h: Broadcasting station 61h: Camcorder 62h: Photo 63h: Memo 64h: Others "PGCI" (FIG. 32) PGCI (PGC information) is ORG_PGCI, UD_
PGCI has a common data structure, and PGC_GI, P
GI, CI_SRP, and CI. “PGC_GI” (FIG. 32) PGC_GI (PGC general information) is composed of PG_Ns and CI_SRP_Ns as general PGC information. The individual fields are as follows.

PG_Ns (number of programs) The number of programs in this PGC is recorded. In the case of a user-defined PGC, since no program can be provided, “0” is recorded in this field.

CI_SRP_Ns (number of CI_SRPs) The number of CI_SRPs described later is recorded. “PGI” (FIG. 32) PGI (program information) includes PG_TY, C_Ns,
PRM_TXTI, IT_TXT_SRPN, THM_
It consists of PTRI. The individual fields are as follows.

PG_TY (program type) The following information indicating the status of this program is recorded using the format shown in FIG.

Protect (Protect) 0b: Normal state 1b: Protect state C_Ns (Number of cells) The number of cells in this program is described.

PRM_TXTI (Primary Text Information) Text information indicating the contents of this program is recorded. Details are the same as the above-described PL_SRPT.

IT_TXT_SRPN (IT_TXT_
(SRP Number) In addition to the above-described primary text, when information indicating the contents of this program is optionally recorded as IT_TXT, the number of IT_TXT_SRP recorded in TXTDT_MG is recorded in this field.

THM_PTRI (thumbnail pointer information) Thumbnail information representing this program is described. The details of THM_PTRI are described in the above-mentioned PL_SR.
Same as THM_PTRI of PT. “CI_SRP” (FIG. 32) The CI_SRP (cell information search pointer) records address information for accessing the cell information.

CI_SA (Cell Information Start Address) The start address of this cell information is recorded. When accessing this cell, it is sufficient to seek to this address. “CI” (FIG. 32) CI (cell information) includes M_CI for a moving image and S_C for a still image.
_CI. “M_CI” (FIG. 34) M_CI (moving image cell information) includes M_C_GI, M_C_
It consists of EPI. “M_C_GI” (FIG. 34) M_C_GI (moving picture cell general information) has the following basic information that constitutes a cell.

C_TY (cell type) The following information for identifying moving picture cells and still picture cells is recorded in the format shown in FIG.

C_TY1 000b: Moving picture cell 001b: Still picture cell M_VOBI_SRPN (moving picture VOB information search pointer number) The search pointer number of the moving picture VOB information corresponding to this cell is recorded. When accessing the stream data corresponding to this cell, first, the video VOB information search pointer number indicated by this field is accessed.

C_EPI_Ns (number of cell entry point information) The number of entry points existing in this cell is recorded.

[0210] An entry point is a place on the playback path where jump playback is possible. By using the entry point, when reaching the entry point in the playback path, jump to the recorded absolute address,
A reproduction operation such as a jump-in reproduction can be performed. In addition, since it can be set at an arbitrary place in the stream like a bookmark in a book, it is possible to resume reproduction from a specific place after suspending reproduction.

C_V_S_PTM (Cell Video Start Time) The reproduction start time of this cell is recorded in the format shown in FIG.

C_V_E_PTM (cell video end time) The reproduction end time of this cell is recorded in the format shown in FIG. C_V_S_PTM and C_V_E_P
The valid section of the cell in the VOB to which this cell corresponds is specified using TM. “M_C_EPI” (FIG. 36) M_C_EPI (video cell entry point information)
It is classified into type A and type B depending on the presence or absence of the primary text. “M_C_EPI (type A)” (FIG. 36) M_C_EPI (type A) is configured from the following information indicating an entry point.

EP_TY (Entry Point Type) The following information for identifying the type of this entry point is recorded according to the format shown in FIG.

EP_TY1 00b: Type A 01b: Type B EP_PTM (Entry Point Time) The time at which the entry point is placed is recorded in accordance with the format shown in FIG. “M_C_EPI (type B)” (FIG. 36) M_C_EPI (type B) is an EP of type A
_TY, EP_PTM, and PRM_TX described below
Has a TI.

PRM_TXTI (Primary Text Information) Text information indicating the contents of the location indicated by this entry point is recorded. See PL_SRP for details.
Same as T. “S_CI” (FIG. 34) S_CI (still picture cell information) is S_C_GI, S_C
_EPI. “S_C_GI” (FIG. 34) S_C_GI (still picture cell general information) has the following basic information that constitutes a cell.

C_TY (cell type) Information for identifying a moving image cell and a still image cell is recorded. The details are as described in the moving image cell.

S_VOGI_SRPN (still picture VOB group information search pointer number) The search pointer number of the still picture VOB group information corresponding to this cell is recorded. When accessing the stream data corresponding to this cell, first, the still image VOB group information search pointer number indicated by this field is accessed.

C_EPI_Ns (number of cell entry point information) The number of entry points existing in this cell is recorded.

S_S_VOB_ENTN (start still picture V
(OB number) The reproduction start still image VOB number of this cell is recorded in the format shown in FIG. The still image VOB number is an order in the S_VOG indicated by the above-described S_VOGI_SRPN.

E_S_VOB_ENTN (End still picture V
(OB number) The reproduction end still image VOB number of this cell is recorded in the format shown in FIG. The still image VOB number is an order in the S_VOG indicated by the above-described S_VOGI_SRPN. Note that S_S_VOB_ENTN and E_S
_VOB_ENTN, the corresponding S_
The valid section of the cell in the VOG is specified. "S_C_EPI" (FIG. 36) S_C_EPI (still picture cell entry point information)
Are classified into type A and type B depending on the presence or absence of a primary text. “S_C_EPI (type A)” (FIG. 36) The S_C_EPI (type A) includes the following information indicating an entry point.

EP_TY (Entry Point Type) The following information for identifying the type of this entry point is recorded according to the format shown in FIG.

EP_TY1 00b: Type A 01b: Type B S_VOB_ENTN (still picture VOB entry number) The still picture number where the entry point is located is recorded in accordance with the format shown in FIG. "S_C_EPI (type B)" (FIG. 36) S_C_EPI (type B) is an EP of type A
_TY, S_VOB_ENTN, PR described below
M_TXTI.

PRM_TXTI (Primary Text Information) Text information indicating the contents of the location indicated by this entry point is recorded. See PL_SRP for details.
Same as T.

(Entry Point and Management Information) Next, the relationship between the entry point and the management information will be described with reference to FIG.

As already described, there are two types of AV data, M_VOB for moving images and S_VOB for still images.

In M_VOB, management information M_VOBI exists for each M_VOB, and the attribute information of the corresponding M_VOB is recorded in M_VOBI.

In the case of S_VOB, if management is performed for each S_VOG, the amount of management information increases.
There is management information S_VOGI for each group S_VOG that is a group of _VOBs. S_VOGI is the corresponding S
_VOB attribute information is recorded.

A plurality of entry points can be set for moving picture cells corresponding to individual M_VOBs.
M_C_EPI (video cell entry point information)
Recorded in M_CI. As already explained, M_C_
EPI (moving image cell entry point information) is classified into type A and type B depending on the presence or absence of primary text.
In the case of type A, the entry point type (EP_T
Along with Y), the entry point time (EP_PTM) at which the entry point is placed is recorded. In the case of type B, in addition to the information recorded in type A,
Text information (PRM_TXT) indicating the contents of the location indicated by the entry point is recorded.

The recorded entry point time (EP_
The PTM uses a filter (TMAP) for converting the time and address of the M_VOBI, and can convert the time at which the entry point is located to the address of the M_VOB. In the TMAP, information on the size of the VOBU corresponding to the time and the reproduction time is recorded, and the corresponding M_VOB is used by using the information.
Can be calculated.

The details of converting a time into an address using TMAP are described in JP-A-11-155130 (European Patent No. 0 903).
No. 738 A2), the contents of which are incorporated herein by reference.

In the case of S_VOB, a plurality of entry points can be set for a still picture cell corresponding to each S_VOB, and S_C_EPI (still picture cell entry point information) is recorded in S_CI. As described above, S_C_EPI (still image cell entry point information) is a type A based on the presence or absence of primary text.
And Type B. In the case of type A, the still image VOB number (S_VOB_ENTN) is recorded together with the entry point type (EP_TY). In the case of type B, text information (PRM_TXT) indicating the contents of the location indicated by the entry point is recorded in addition to the information recorded in type A.

The recorded still image VOB number (S_VOB)
_ENTN) is a still image VO of S_VOBI
Using a filter (S_VOB Entries) for converting the still image number and the address in the B group,
The time at which the entry point is located can be converted to an S_VOB address. S_VOB Entr
The video part size is recorded in the ies, and the address of the video part included in the corresponding still image VOB group can be calculated using this information.

Also, as shown in FIG. 45, even when a plurality of reproduction paths (for example, user-defined PGCs indicated by playlist # 1 and playlist # 2) exist, each moving picture cell or still picture cell On the other hand, a plurality of entry points can be set.

When a plurality of entry points are set for a moving image cell corresponding to each M_VOB,
C_EPI (moving image cell entry point) is recorded in M_CI.

If a plurality of entry points are set for a still picture cell corresponding to each S_VOB,
_C_EPI (still image cell entry point) is S_C
Recorded in I.

That is, in FIG. 45, the portion described as the program set corresponds to the original program information (ORG_PGCI), and the program # 1 corresponds to the PGI # 1 of the ORG_PGCI in FIG. Also, the playlist # 1 is the P of the UD_PGCI in FIG.
Corresponds to GI # 1. Further, in FIG. 45, the black triangle indicates the position of the entry point, and M_Cel
The black triangle attached to block l is M_C_ in FIG.
The black triangles corresponding to the EPI # 1, # 2, etc. and attached to the S_Cell block are S_C_EPI # 1,
# 2 and so on. M_Cell includes position information indicating from which position to which position of the moving image video object information M_VOBI is to be reproduced. Also, S
_Cell includes still image video object information S_V
Information about which still image of the OBI is to be reproduced is included. In the original program information (ORG_PGCI), the program is set so that the recorded program stream is reproduced in the order of recording. Playback is performed on the playlists # 1 and # 2 in accordance with the division and order edited by the user.
As described above, even when the program stream is the same, the time at which the original program # 1, the playlist # 1, and the playlist # 2 are reproduced, that is, the presentation time may be different. As described above, even for the same program stream, the reproduction order can be changed or deleted in a piecewise manner according to the setting of the user. That is, a plurality of reproduction paths can be set. M_V with original program # 1
The entry point set for the OB (referred to as the first entry point) is the original management information (ORG_
PGCI), the entry point (called the second entry point) set for the same M_VOB in the playlist # 1 is managed by the management information (UD_PGCI) of the playlist # 1. Therefore, when reproduction is performed based on program # 1, only the first entry point operates effectively, and the second entry point does not operate. When the reproduction is performed based on the playlist # 1, only the second entry point operates effectively, and the first entry point does not operate. in this way,
As shown by a black triangle in FIG. 45, an entry point can be set independently for each reproduction path.

As described above, by providing accompanying information for each of a plurality of playback paths, a plurality of playbacks having a logical meaning, which cannot be realized by a tape medium such as DVC or a ROM medium such as a video CD, are provided. Independent entry points can be set for routes.

In addition, the DVD playback apparatus uses information (EP_TY) indicating the presence or absence of text indicating the content of the entry point and information indicating the target of setting the entry point (moving picture cell or still picture cell), and Entry points that have different meanings for each user and could not be realized with tape media or ROM media can now be explicitly presented to users.

The management information and actual program stream data related to the present invention will be described with reference to FIG.

The horizontal column L1 in FIG. 45 shows the program chain information PGCI, and the program set, which is the block on the left side, has the original program chain information ORG_ necessary to reproduce the recorded one as it is.
The PGCI is shown, and the user-defined program information UD_PGCI required for the user to edit and play back what has been edited by the user is shown in the playlists # 1 and # 2 on the right side. The hierarchical structure of the management information of ORG_PGCI is shown in FIGS. 5, 32, and 34. Also, UD_
For the PGCI management information, see FIGS.
2. The hierarchical structure is shown in FIG. In FIG.
UD_PGCIT (user defined program chain inform
The UD_PGCI is a table of the UD_PGCI. First, a UD_PGCIT, which is a table of the UD_PGCI, is provided.
It is developed to select D_PGCI.

In FIG. 45, the second horizontal row L2 is
Still image management information S_VOGI (Still Video Objec
t Group Information) and management information M_VO for moving images
BI is shown. Up to 999 pieces of management information M_VOBI can be created on an optical disc. M_VOB
The hierarchical structure of the management information of I is shown in FIGS.

The Cell in the L1 program chain information PGCI is the management information M_VOB for the L2 moving image.
Which of I is related can be known from the management information described below.

S1 in FIG. 5 → S2 in FIG. 32 → S4 (C_N
s indicates the number of cells included in the program. By accumulating the number of cells included in the program in order from the first program, the number of the cell included in the target program can be obtained. The obtained cell number is the cell search pointer CI
Used as _SRP # n. ) → S5 → S6 → S
7 (determines the cell address based on the cell search pointer) → S8 (determines the number of the target cell information) → S9 (moving cell information M_CI) in FIG. 34 → S10 (moving cell general information M_CGI) → S11 ( Video VOB information search point number M_VOBI_SRPN) → S1 in FIG.
2 (AV file information table) → S13 in FIG. 15 → S
14 → S15 (Access the moving image VOB information search pointer specified in S11 here) → S16 → S17 (Specify the starting address of the moving image VOB information here) → S18
→ S19. (Corresponding to step # 495 in FIG. 49) FIG.
TMA of S20 from the moving image VOB information M_VOBI
Start presentation time of video (VOB_V_S_PTM) using P or TMAP_GI of S21
You can know.

(Configuration of DVD Recording Apparatus) Next, the configuration of the DVD recording apparatus will be described with reference to FIG.

In the figure, reference numeral 7801 denotes a user interface unit for displaying to a user and receiving a request from the user, 7802 denotes a system control unit for managing and controlling the entire system, and 7803 inputs video and audio including an AD converter. An input unit, 7804 is an encoder unit,
Reference numeral 7805 denotes an output unit for outputting video and audio, and 7806
Is a decoder for decoding the MPEG stream, 78
07 is a track buffer, and 7808 is a drive.

(Operation of DVD Recording Apparatus) Next, a procedure of a jump-in reproduction operation using an entry point will be described.

When the user interface unit 7801 receives a jump-in reproduction request by the entry point from the user, the user interface unit 7801 requests the system control unit 7802 to execute the entry point reproduction, and the operation is performed in the next step.

In the case of reproducing a moving image: (1) When the optical disk is mounted on the reproducing apparatus, the system control section 7802 reads management information including entry point information from the optical disk and holds it.

(2) The system control section 7802 reads address information indicating the current playback position from the decoder section 7806.

(3) The system control section 7802 converts the address information into time information T0 (point information in a broad sense) on the reproduction path.

(4) The system control unit 7802 stores the converted time information T0 in a time list (M_C_EPI in FIG. 30) which is a collection of entry point information in the management information.
Time EP_PTM recorded at # 1, # 2,... #N
Compared with FIG. 36, the time information T0 is being reproduced in the forward direction.
A time that is larger and closest to T0 is selected from the entry point time list. During playback in the reverse direction, a time smaller than the time information T0 and closest to T0 is selected from the time list of the entry points.

(5) The system control unit 7802 converts the time selected from the time list into address information.

(6) The system control unit 7802 requests the drive 7808 to jump from the current playback position to a position based on the converted address information.

(7) The system control unit 7802 requests the decoder unit 7806 to decode and output from the new jumped position.

In the case of reproducing a still image: (1) When the optical disc is mounted on the reproducing apparatus, the system control section 7802 reads management information including entry point information from the optical disc and holds it.

(2) The system control section 7802 reads address information indicating the current playback position from the decoder section 7806.

(3) The system control section 7802 converts the address information into the still image number information S0 which is point information in the program stream. The still image number information S0 indicates the number of the still image currently being reproduced in the reproduction path.

(4) The system control unit 7802 stores the still image number information S0 obtained by the conversion in a still image number list (S_of FIG. 30) as entry point information in the management information.
.. #N recorded in the C_EPI # 1, # 2,... #N, while being reproduced in the forward direction, larger than the still image number information S0, and S0.
Is selected from the still image number list of the entry point. During playback in the reverse direction, a still image number smaller than the still image number information S0 and closest to S0 is selected from the still image number list of the entry point.

(5) The system control unit 7802 converts the still image number selected from the still image number list into address information.

(6) The system control unit 7802 requests the drive 7808 to jump from the current playback position to a position based on the converted address information.

(7) The system control unit 7802 requests the decoder unit 7806 to decode and output from the new jumped position.

System control section 780 in reproduction using entry points using FIG. 47 and FIGS.
An operation procedure for converting the entry point No. 2 into a VOB address will be described.

In order for the system control unit 7802 to set an entry point, information on the PGC number and the Cell number is required together with the entry point number (# 492 in FIG. 49).

[0264] The system control unit 7802 controls the Cel specified by the user via the user interface unit 7801.
From the cell information of l, it is determined whether the Cell including the designated entry point is a moving image cell (M_Cell) or a still image cell (S_Cell) (# 49 in FIG. 49).
3).

When reproduction from the entry point in the moving image cell (M_Cell) is specified, the system control unit 7802 uses a filter (TMAP) for converting the time and address of the M_VOBI, and The time at which the point is placed is converted to the address of M_VOB (FIG. 47).

A procedure for converting a time into an address of a moving image VOB will be described with reference to FIG.

In the M_C_EPI (moving image cell entry point information) obtained from the designated entry point, EP_PTM (entry point time) is recorded in the format shown in FIG. 36, and this entry point time is read (# 494). ).

Next, the system control unit 7802 executes
The corresponding M_VOBI_SRPN (moving picture VOB information search pointer number) is searched from the M_CI (moving picture cell information) specified by the l number, and the moving picture VOB corresponding to this cell is searched.
The search pointer number of the information is specified (# 495).

Subsequently, the system control unit 7802 determines whether or not M_
Find the corresponding M_VOBI from VOBI_SRPN,
Using the TMAP in the M_VOBI, the EP_PTM specified in # 494 is searched for the address of a specific position in the M_VOB. (# 496).

Access is made to the obtained address, and reproduction is started from that position (# 500). Thereby, reproduction from the entry point becomes possible.

When reproduction from the entry point in the still picture cell (S_Cell) is designated, the DVD recording apparatus uses a filter (S_VOB) for converting the still picture number and address in the group of S_VOBI.
Entry), the time at which the entry point is located is converted into the address of S_VOB (FIG. 4).
8).

The procedure for converting the time into the address of a still picture VOB will be described with reference to FIG.

S_C_ obtained from entry point
The EPI (still image cell entry point information) includes FIG.
S_VOB_ENTN (still image VOB entry number) is recorded in the format shown in FIG. 6, and the entry point number is read (# 497).

Next, the system control unit 7802 executes
The corresponding S_VOGI_SRPN (still image VOB group information search pointer number) is searched from the S_CI (still image cell information) specified by the l number, and the search pointer number of the still image VOB group information corresponding to this cell is specified (# 498).

Subsequently, the system control unit 7802 determines whether S_
S_VOB Entry corresponding to VOGI_SRPN
es and S_VOB_ENTN specified in # 497
V_PART_SZ (video part size) up to the still image V
The address is converted to an OB address (# 499).

Similarly to the above, access is made to the obtained address, and reproduction is started from that position (# 500).
Thereby, reproduction from the entry point becomes possible.

As described above, by converting the entry point information into the address information, the DVD recording apparatus can reproduce from the dive point using the entry point.

In FIG. 46, the system control unit requests the drive 7808 to start reading a stream based on the converted address information from the disk, and also requests the decoder unit 7806 to decode and output the stream. .

[0279] The drive 7808 reads the stream from the DVD-RAM and outputs the stream to the track buffer 7807.

[0280] The decoder section 7806 reads the stream from the track buffer, decodes the stream, and outputs the stream.
805.

Output unit 7805 outputs the decoded video and audio to a monitor screen or a speaker.

Next, with reference to FIG. 50, a description will be given of jump playback on a playback path including a still image without sound.

[0283] Since a reproduction time is not specified for a still image without audio (the display time is determined by STILL_TM or a user operation), a certain entry point does not always indicate the same time (presentation time). Therefore, even if “00:07:50” is designated as the reproduction start time in FIG.
Is not always displayed, STILL_TM
The image “B” may be displayed depending on the change in the value of “B”.

On the other hand, since the entry point is included in the cell, it is not affected by the reproduction time of the reproduction path. Therefore, by STILL_TM or user operation,
Even if the reproduction time or the reproduction end time of a cell other than the cell containing the designated entry point changes, reproduction can always be performed from the same jump point.

Next, a high-speed search (entry skip) using an entry point will be described with reference to FIGS. 46, 51 and 52.

System control section 7802 in FIG. 46
When performing a high-speed search (for example, CM cut) during the reproduction of a stream, the time currently being reproduced is compared with the time at which the entry point is located, and the nearest entry point corresponding to a time earlier than the current time is compared. Search for.
The system control unit 7802 converts the entry point of the search result into a VOB address, requests the drive 7808 to start reading the stream based on the converted address information from the disk, and sends the stream to the decoder unit 7806. Request decoding and output.

[0287] The drive 7808 reads the stream from the DVD-RAM, and outputs the stream to the track buffer 7807.

[0288] The decoder unit 7806 reads the stream from the track buffer, decodes it, and outputs it.
805.

Output unit 7805 outputs the decoded video and audio to a monitor screen or a speaker.

The operation procedure of the system control unit in a high-speed search using an entry point will be described with reference to FIG.

An instruction to jump to the next entry point is received from the user or the playback device (step # 5).
21).

[0292] The system control unit 7802 includes the decoder unit 7
The address of the VOB currently being reproduced is obtained from 806 (# 522).

Next, the system control unit 7802 converts the obtained VOB address into time and obtains the current time (# 523).

Further, the system control unit 7802 obtains a list of entry points in the cell being reproduced,
The current time is sequentially compared with the current time, and the closest entry point corresponding to a time earlier than the current time is searched (# 52).
4, # 525).

Subsequently, the system control unit 7802 operates as shown in FIG.
In accordance with the reproduction procedure from the entry point described above with reference to FIG. 7 and FIGS. 48 and 49, jump playback from the searched entry point is performed (# 526).

Based on the above procedure, the DVD recording apparatus can realize a high-speed search such as a CM cut using an entry point.

Next, the recording operation of the entry point will be described with reference to FIGS. 46 and 53.

Upon receiving an entry point setting request for a certain time from the user, the user interface unit 7801 requests the system control unit 7802 to execute entry point setting.

The system control unit 7802 controls the moving picture cell (M_Cell) or the still picture cell (S_VOB) corresponding to the M_VOB or S_VOB for setting the entry point.
Generate and hold the time at which the entry point is placed in the Cell.

When an entry point is set for a moving picture cell (M_Cell), the system control unit adds moving picture cell entry point information (M_C_EPI) to corresponding moving picture cell information (M_CI) and sets an entry point type (EP_TY). And the time (EP_PTM) at which the entry point is to be placed and generated. When the entry point type is M_C_EPI (type B) in FIG. 36, text information (PRM_TXT) is also generated and held.

When setting an entry point for a still picture cell (S_Cell), the system control unit adds still picture cell entry point information (S_C_EPI) to the corresponding still picture cell information (S_CI) and sets the entry point type. (EP_TY) and a still image VOB entry number (S_VOB_ENTN) are generated and held.
The entry point type is S_C_EP in FIG.
In the case of I (type B), text information (PRM_TX
T) is also generated and held.

[0302] The entry point information held in the system control unit is recorded on the optical disc as a part of the management information.

An operation procedure of the system control unit in recording an entry point will be described with reference to FIG.

The system control unit 7802 obtains the address of the VOB currently being reproduced or recorded from the decoder during reproduction or from the encoder during recording (# 53).
2).

Next, the system control section 7802 converts the obtained VOB address information into time information or information on the number of still images that can be obtained, and obtains current time information or still image number information (# 533). Even at the time of encoding, the TMAP information and VOBEntrys information are created as needed based on information from the encoder.
It is possible to convert the address information of the OB into the time and the number of sheets and obtain the current time and the number of sheets.

[0306] Finally, the system control unit 7802 sets the M_VOB or S_VOB for setting the entry point.
The entry point information is additionally recorded in the moving image cell information (M_CI) or the still image cell information (S_CI) corresponding to (# 534). The time information (EP_PTM) is included in the moving image cell information (M_CI), and the still image cell information (S_CI)
Indicates the number of a still image (S_VOB_EN)
TN) is newly recorded. Here, recording means that the entry point information is temporarily stored in the system control unit 7802 and is recorded on the Hikari disk in the form of management information.

[0307] The DVD recording apparatus can record an entry point based on the above procedure.

(Screen Display) FIG. 54 is an example of a screen display using entry points.

[0309] On the screen, a reproduction path "" athletic meet-third grader "" and another reproduction path "" athletic meet-fifth grader "" are displayed, and a plurality of entry points are set for each path. As a result, the user can select a playback dive point having a logical meaning and start playback from an arbitrary playback dive point.

When the entry point is of type B, text information such as “100 m competition” or “support battle” can be displayed, and the user can not only display time information but also text information. It is possible to select a reproduction start point with reference to the information and start reproduction from an arbitrary reproduction dive point.

FIG. 55 shows an example of a screen display using information of a cell in which an entry point is set.

[0312] On the screen, information of entry points recorded on a certain reproduction path is displayed, and the type of cell in which each entry point is set is "M" (moving image cell), "S" (still image). (Image cell). This allows the user to determine whether the video for which each entry point is set is a moving image or a still image.

In this embodiment, the DVD-RAM
Has been described as an example, but the same setting can be made in other media, so that the present invention
It is not limited only to optical disks and optical disks.

[0314] In the present embodiment, the moving image VOB and the still image VOB are recorded separately from other VOBs in the AV file, but they may be recorded in the same AV file as the other VOBs. Further, the present invention is not limited by the configuration of the AV file.

[0315]

According to the present invention, there is provided an optical disc on which at least video data is recorded, wherein a plurality of pieces of reproduction path information,
Each playback path information has a plurality of independent playback jump points (entry points).

As a result, independent playback jump points (entry points) can be used for each playback path, and disc-specific random accessibility, which cannot be realized by tape media, can be realized by a plurality of logical meanings. The effect that it can be realized in a certain reproduction path is obtained.

[Brief description of the drawings]

FIG. 1 is a logical configuration diagram of a disk according to an embodiment;

FIG. 2 is a configuration diagram of an AV file for a moving image.

FIG. 3 is a configuration diagram of an AV file for a still image

FIG. 4 is a diagram showing the relationship between AV data and management information.

FIG. 5 is a configuration diagram of RTR_VMG.

FIG. 6 is a configuration diagram of RTR_VMGI.

FIG. 7 is a format explanatory diagram of VERN and TM_ZONE.

FIG. 8 is a block diagram of a PL_SRP.

FIG. 9 is an explanatory diagram of a format of PL_TY and PL_CREATE.

FIG. 10 is an explanatory diagram of a PTM recording format.

FIG. 11 is an explanatory diagram of an S_VOB_ENTN recording format.

FIG. 12 is a block diagram of M_AVFIT.

FIG. 13 is an explanatory diagram of V_ATR and A_ATR format.

FIG. 14 is an explanatory diagram of a SP_PLT format for a moving image.

FIG. 15 is a configuration diagram of M_AVFI.

FIG. 16 is an M_VOBI configuration diagram.

FIG. 17 is an explanatory diagram of a VOB_TY format.

FIG. 18 is a TMAPI configuration diagram.

FIG. 19 is an explanatory diagram of a VOBU_ENT format.

FIG. 20 is an S_AVFIT configuration diagram

FIG. 21 is a configuration diagram of S_AA_STI and S_AAFI.

FIG. 22 is an explanatory diagram of V_ATR and OA_ATR formats.

FIG. 23 is an explanatory diagram of a still image SP_PLT format.

FIG. 24 is a configuration diagram of S_AVFI.

FIG. 25 is a diagram showing the configuration of S_VOB_ENT.

FIG. 26 is an explanatory diagram of an S_VOB_ENT_TY format

FIG. 27 shows S_AAFI_GI and S_AAGI_
SRP configuration diagram

FIG. 28 is an S_AAGI configuration diagram.

FIG. 29 is an explanatory diagram of an AA_TY format.

FIG. 30 is a diagram showing the configuration of UD_PGCIT.

FIG. 31 is a configuration diagram of TXTDT_MG

FIG. 32 is a PGCI configuration diagram

FIG. 33 is an explanatory diagram of a PG_TY format.

FIG. 34 is a diagram showing a CI configuration;

FIG. 35 is an explanatory diagram of a C_TY format.

FIG. 36 is a configuration diagram of C_EPI

FIG. 37 is an explanatory diagram of an EP_TY1 format.

FIG. 38 is a block diagram of a drive device of a DVD recording device.

39A is a diagram showing an address space on a disk, and FIG. 39B is a diagram showing an amount of data stored in a track buffer.

FIG. 40 is a picture correlation diagram in an MPEG video stream.

FIG. 41 is a configuration diagram of an MPEG system stream.

FIG. 42: MPEG system decoder (P-STD)
Configuration diagram

FIG. 43 (a) shows video data, and FIG. 43 (b)
A diagram showing a video buffer, (c) a diagram showing an MPEG system stream, and (d) a diagram showing audio data

FIG. 44 is a diagram showing the relationship between AV data and entry points.

FIG. 45 is a diagram showing the relationship between PGCs and entry points.

FIG. 46 is a configuration diagram of a DVD recording device.

FIG. 47 is an explanatory diagram of reproducing a moving image cell entry point in a DVD recording device.

FIG. 48 is an explanatory diagram of still image cell entry point reproduction in a DVD recording device.

FIG. 49: Entry point reproduction operation flow

FIG. 50 is an explanatory diagram of jump-in playback on a playback path including a still image

FIG. 51 is an explanatory diagram of a high-speed search in a DVD recording device.

FIG. 52: High-speed search operation flow

FIG. 53 is an entry point recording operation flow.

FIG. 54 is a display example of an entry point in a DVD recording device.

FIG. 55 is a display example of the type of an entry point in a DVD recording device.

[Explanation of symbols]

 Reference Signs List 11 optical pickup 12 ECC processing section 13 track buffer 14 switch 15 encoder section 16 decoder section 41 pack header 42 packet header 43 payload 51 STC 52 demultiplexer 53 video buffer 54 video decoder 55 reorder buffer 56 switch 57 audio buffer 58 audio decoder 7801 user Interface section 7802 System control section 7803 Input section 7804 Encoder section 7805 Output section 7806 Decoder section 7807 Track buffer 7808 Drive

 ──────────────────────────────────────────────────の Continuing from the front page (72) Kaoru Murase, Inventor Kaoru Kadoma, Osaka Prefecture 1006 Kadoma, Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] 1. A program stream comprising a video stream, and management information for managing the program stream, wherein the management information includes information for specifying a start time of the program stream, and an end of the program stream. An optical disc comprising: information for specifying a time; and entry point information for accessing an arbitrary point of the program stream and reproducing from the arbitrary point. 2. An optical disc reproducing apparatus for reproducing an optical disc according to claim 1, wherein said entry point information is read from said optical disc and held, holding means for decoding a program stream, and address information during reproduction of said program stream. A conversion unit that converts the address information into point information of the program stream; a unit that selects entry point information closest to the point information; and converts the selected entry point information into address information. An optical disc reproducing apparatus, comprising: converting means for converting; and driving means for jumping to a position based on the converted address information, wherein the decoder decodes and reproduces from the jumped position. 3. An optical disk reproducing method for reproducing an optical disk according to claim 1, wherein entry point information is read from the optical disk, held, a program stream is decoded, and address information during reproduction of the program stream is generated. Converting the address information into point information of the program stream, selecting entry point information closest to the point information, converting the selected entry point information into address information using the conversion table, An optical disc reproducing method characterized by jumping to a position based on converted address information, decoding from the jumped position, and reproducing. 4. An optical disk recording apparatus for recording information on an optical disk according to claim 1, wherein: an interface for receiving entry point information; a means for generating address information at the time of receiving the entry point information; Conversion means for converting the address information into entry point information of the program stream using the conversion table; holding means for temporarily holding the entry point information; and recording the held entry point information on an optical disc. An optical disk recording device, comprising: a drive unit. 5. An optical disk recording method for recording information on an optical disk according to claim 1, comprising receiving input of entry point information, generating address information at the time of receiving the entry point information, An optical disc recording method comprising: converting the program stream into entry point information using the conversion table; temporarily storing the entry point information; and recording the held entry point information on an optical disc.