JPH08336104A - System and method for appropriate reproduction of reproduced data by utilizing attribute information of reproduced data - Google Patents

Abstract

PURPOSE: To provide a reproducing device capable of changing the output system of video data arbitrarily based on video data attribute attached on the video data when it is displayed. CONSTITUTION: The video data as a target of reproduction is stored in the file of a video title set(VTS) 72 secured in the information recording area 28 of an optical disk 10. VTS information(VTSI) 94 which manages the VTS 72 is described on the forefront area of the VTS 72. A table(VTSI MAT) 98 to manage the VTSI 94 is provided in the VTSI 94, and attribute(VTS V ATR) proper to the video data stored in the VTS 72 is described on the VTSI MAT 98. The video data to be reproduced is set on a reproduction system by referring to the table VTSI MAT.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system and a reproducing method for appropriately reproducing reproduction data by utilizing video attribute information of the reproduction data, and more particularly, to acquiring reproduction data having a specific video attribute. The present invention relates to a reproduction system capable of converting reproduction data suitable for the reproduction system and a reproduction method thereof.

[0002]

2. Description of the Related Art In recent years, a moving picture compatible optical disk reproducing apparatus for reproducing an optical disk in which data such as video (video data) and audio (audio data) is digitally recorded has been developed. For example, reproduction of movie software and karaoke. Widely used as a device. Compact discs, so-called CDs, have already been developed as generally known optical discs, but it is difficult to record and reproduce movie data for a long time on such an optical disc because of its storage capacity. It is said that. From such a viewpoint, optical discs capable of high-density recording of movie data are being researched and developed.

With the advent of such high density recordable optical disks, it becomes possible to record a plurality of selectable video data and the like on such optical disks.
Also, by recording multiple audio streams,
Different audio can be associated with one video, and by recording a plurality of sub-picture streams, for example, subtitles having different language types can be selected and displayed.

In recent years, a data compression method for moving images has been internationally standardized as an MPEG (Moving Picture Expert Group) method. This MPEG system is a system for variably compressing video data. In addition, the MPEG2 system is currently being internationally standardized, and along with this, a system format compatible with the MPEG2 compression system is also defined as an MPEG2 system layer. As this system layer, frame rate information, a display aspect ratio, etc. as data when displaying video data are defined.

[0005]

However, when the source frame rate and the display frame rate are different when decompressing the video data compressed by the decoder compatible with MPEG2, or the source aspect ratio and the display aspect ratio are different from each other. If they are different, it is necessary to perform conversion suitable for the display device as the source. However, in the past, MPE
There is a problem in that only the display conversion specified by the G2 system layer can be performed, the output method of video data cannot be changed, and it cannot be used properly.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to arbitrarily display video data on the basis of the video data attribute added to the video data when the video data is displayed. It is an object of the present invention to provide a reproducing apparatus capable of changing the output method of the.

Further, an object of the present invention is to provide a reproducing method capable of arbitrarily changing the output method of video data based on the video data attribute added to the video data when displaying the video data. To provide.

[0008]

According to the present invention, a retrieval means for retrieving video data and reproduction information from a reproduction information area and a retrieval means provided corresponding to each video attribute are used to convert the retrieved video data into a video signal. The video data is stored by the conversion unit for conversion, selection unit for selecting the conversion unit of the conversion unit according to the searched video attribute information, and reproduction unit for reproducing the video signal converted by the conversion unit. A reproduction data area, and management information about the stored video data itself and reproduction information about a reproduction procedure of the video data are described in the reproduction information area, and the management information is necessary for converting into a video data video signal. System for reproducing video data from a recording medium having a reproduction information area containing information on video attributes specific to various video data It is provided.

Further, according to the present invention, a step of searching for the video data and the reproduction information from the reproduction information area, a step of selecting a conversion method according to the searched video attribute information, and a selected conversion method. A reproduction data area in which the video data is stored and a reproduction data area in which the converted video signal is converted into a video signal A reproduction information area is described in which management information regarding itself and reproduction information regarding a reproduction procedure of video data are described, and the management information includes information regarding video attributes unique to video data necessary for conversion into video data video signals. A method of reproducing video data from a recording medium having a reproduction information area is provided.

According to the present invention, a plurality of video data units to be reproduced in time series, each of which is to be reproduced within a fixed time range, the data units compressing the video data to form a packet. Means for generating video data composed of a plurality of converted data pack sequences and generating management information about the video data itself and reproduction management data designating the reproduction procedure, wherein the management information is video data. A generation means including information about a video attribute unique to the video data necessary for converting into a signal, a means for transferring the video data unit after transferring the reproduction management data, and a means provided for each of the video attributes, A converter that converts the transferred video data unit into a video signal, and a video of the transferred playback management data. Selection means for selecting a conversion unit of the conversion unit according to the attribute information, a communication system for transferring and reproducing means, reproduction data consists of reproducing the converted video signal by the conversion unit is provided.

[0011]

DETAILED DESCRIPTION OF THE INVENTION An optical disk and an optical disk reproducing apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a block of an optical disc reproducing apparatus for reproducing data from an optical disc according to an embodiment of the present invention, and FIG. 2 shows a block of a disc drive section for driving the optical disc shown in FIG. 3 and 4 show the structure of the optical desk shown in FIGS. 1 and 2.

As shown in FIG. 1, the optical disk reproducing apparatus is
Key operation / display unit 4, monitor unit 6 and speaker unit 8
Is provided. Here, the user operates the key operation / display unit 4
The recorded data is reproduced from the optical disc 10 by operating the. The recording data includes video data, sub-picture data and audio data, which are converted into a video signal and an audio signal. The monitor section 6 displays video by a video signal, and the speaker section 8 produces sound by an audio signal.

As already known, the optical disk 10 has various structures. As the optical disc 10, for example, as shown in FIG. 3, there is a read-only disc on which data is recorded at high density. As shown in FIG. 3, the optical disc 10 comprises a pair of composite layers 18 and an adhesive layer 20 interposed between the composite disc layers 18. Each composite disk layer 18 is composed of a transparent substrate 14 and a recording layer, that is, a light reflection layer 16. The disc layer 18 is arranged so that the light reflection layer 16 contacts the adhesive layer 20. The optical disc 10 is provided with a central hole 22, and a clamping area 2 for holding the optical disc 10 at the time of rotation is provided around the central hole 22 on both sides thereof.
4 are provided. When the disc 10 is loaded into the optical disc device, the spindle of the spindle motor 12 shown in FIG. To be done.

As shown in FIG. 3, the optical disc 10 is surrounded by the clamping areas 24 on both sides thereof.
It has an information area 25 in which information can be recorded. Each information area 25 is defined as a lead-out area 26 where information is not normally recorded in its outer peripheral area, and a lead-in area 27 where information is not normally recorded in its inner area that contacts the clamping area 24. In addition,
A data recording area 28 is defined between the lead-out area 26 and the lead-in area 27.

In the recording layer 16 of the information area 25, normally, a track is continuously formed in a spiral shape as an area for recording data, and the continuous track is divided into a plurality of physical sectors. A serial number is attached to each sector, and data is recorded with reference to this sector.
The data recording area 28 of the information recording area 25 is an actual data recording area, and reproduction information, video data, sub-picture data, and audio data are also pits (that is, changes in physical state) as described later. Is recorded as. In the read-only optical disc 10, the transparent substrate 1
A pit row is formed in advance by a stamper on No. 4, a reflective layer is formed by vapor deposition on the surface of the transparent substrate 14 on which the pit row is formed, and the reflective layer is formed as the recording layer 16. Further, in the read-only optical disc 10, normally, no groove is provided as a track, and a pit row formed on the surface of the transparent substrate 14 is defined as a track.

As shown in FIG. 1, the optical disk device 12 further includes a disk drive unit 30, a system CPU unit 50, a system ROM / RAM unit 52, a system processor unit 54, a data RAM unit 56, and a video decoder unit 58. , An audio decoder section 60, a sub-picture decoder section 62 and a D / A and data reproducing section 64.

As shown in FIG. 2, the disk drive unit 30
Is a motor drive circuit 11, a spindle motor 12,
An optical head 32 (that is, an optical pickup), a feed motor 33, a focus circuit 36, a feed motor drive circuit 37, a tracking circuit 38, a head amplifier 40, and a servo processing circuit 44 are provided. Optical disc 10
Is placed on a spindle motor 12 driven by a motor drive circuit 11, and is rotated by this spindle motor 12. An optical head 32 for irradiating the optical disc 10 with a laser beam is placed under the optical disc 10. The optical head 32 is placed on a guide mechanism (not shown). Feed motor drive circuit 3
7 is provided for supplying a drive signal to the feed motor 33. The motor 33 is driven by the drive signal to move the optical head 32 in the radial direction of the optical disc 10. The optical head 32 includes an objective lens 34 that faces the optical disc 10. The objective lens 34 is moved along its optical axis according to the drive signal supplied from the focus circuit 36.

In order to reproduce data from the above-mentioned optical disc 10, the optical head 32 irradiates the optical disc 10 with a laser beam via the objective lens 34. The objective lens 34 is finely moved in the radial direction of the optical disc 10 in accordance with the drive signal supplied from the tracking circuit 38.
Further, the objective lens 34 has a focusing circuit 36 so that its focus is located on the recording layer 16 of the optical disc 10.
It is finely moved along the optical axis in accordance with the drive signal supplied from. As a result, the laser beam forms a minimum beam spot on the spiral track (i.e. row of pits) and the track is tracked with the light beam spot. The laser beam is reflected from the recording layer 16 and the optical head 3
Returned to 2. The optical head 32 converts the light beam reflected from the optical disk 10 into an electric signal, and the electric signal is supplied from the optical head 32 to the servo processing circuit 44 via the head amplifier 40. In the servo processing circuit 44,
A focus signal, a tracking signal, and a motor control signal are generated from the electric signal, and these signals are respectively supplied to the focus circuit 36, the tracking circuit 38, and the motor drive circuit 11.
Is being supplied to.

Therefore, the objective lens 34 is moved along its optical axis and the radial direction of the optical disk 10, its focus is located on the recording layer 16 of the optical disk 10, and the laser beam causes the minimum beam spot to be on the spiral track. Form. Further, the motor drive circuit 11 rotates the spindle motor 12 at a predetermined rotation speed. as a result,
The pit train on the optical disc 10 is traced by the light beam at a constant linear velocity.

A control signal as an access signal is supplied from the system CPU section 50 shown in FIG. 1 to the servo processing circuit 44. The servo processing circuit 4 responds to this control signal.
4 supplies a head movement signal to the feed motor drive circuit 37, and this circuit 37 sends the drive signal to the feed motor 3
3 will be supplied. Therefore, the feed motor 33
Are driven, and the optical head 32 is moved along the radial direction of the optical disc 10. Then, the optical head 32 accesses a predetermined sector formed on the recording layer 16 of the optical disc 10. The reproduction data is reproduced from the predetermined sector, supplied from the optical head 32 to the head amplifier 40, amplified by the head amplifier 40, and output from the disk drive unit 30.

The reproduced data output is the RO for the system.
The data is stored in the data RAM section 56 by the system processor section 54 under the control of the system CPU section 50 controlled by the program recorded in the M and RAM section 52. The stored reproduction data is processed by the system processor unit 54 to be classified into video data, audio data and sub-picture data.
It is output to the audio decoder unit 60 and the sub-picture decoder unit 62 and decoded. The decoded video data, audio data and sub-picture data are video signals as analog signals in the D / A and reproduction processing circuit 64,
The video signal is converted into an audio signal, the video signal is supplied to the monitor 6, and the audio signal is supplied to the speaker unit 8. As a result, video is displayed on the monitor unit 6 by the video signal and sub-picture signal, and sound is reproduced from the speaker unit 8 by the audio signal.

The detailed operation of the optical disk device shown in FIG. 1 will be described later in detail with reference to the logical format of the optical disk 10 described below.

The data recording area 28 from the lead-in area 27 to the lead-out area 26 of the optical disk 10 shown in FIG. 1 has a volume and file structure as shown in FIG. This structure is used as a logical format for a specific standard, for example, micro UDF (micr
o UDF) and ISO 9660. The data recording area 28 is physically divided into a plurality of sectors as described above, and the physical sector is
Serial numbers are attached. In the following description, the logical addresses are micro UDF (micro UDF) and ISO966.
0 means the logical sector number (LSN) as defined by 0, and the logical sector is the same as the size of the physical sector.
It is 8 bytes, and the logical sector number (LSN) is added with a continuous number in the ascending order of the physical sector numbers.

As shown in FIG. 4, the volume and file structure has a hierarchical structure, and the volume and file structure area 70 and the video manager (VMG) 7 are provided.
1, at least one or more video title sets (VT
S) 72 and another recording area 73. These areas are divided on the boundaries of logical sectors. here,
Like a conventional CD, one logical sector is defined as 2048 bytes. Similarly, one logical block is also defined as 2048 bytes, and thus one logical sector is defined as one logical block.

The file structure area 70 is a micro UDF.
And the management area defined by ISO 9660, and the video manager 71 is stored in the system ROM / RAM section 52 via the description of this area. Information for managing a video title set is described in the video manager 71 as described with reference to FIG.
It is composed of a plurality of files 74 starting from. Further, in each video title set (VTS) 72, compressed video data, audio data, sub-picture data, and their reproduction information are stored as will be described later, and are similarly composed of a plurality of files 74. . Here, the plurality of video title sets 72 is limited to a maximum of 99, and the files 74 (File #j to File # j + 1 which compose each video title set 72 are also included.
The number of 1) is set to 12 at maximum. These files are also divided at the boundaries of logical sectors.

In another recording area 73, information that can use the above-mentioned video title set 72 is recorded.
The other recording area 73 does not necessarily have to be provided.

As shown in FIG. 5, the video manager 71
Contains three items, each corresponding to each file 74. That is, the video manager 71 has the video manager information (VMGI) 75 and the video object set (VMGM_V) for the video manager menu.
OBS) 76 and video manager information backup (VMGI_BUP) 77. Here, the video manager information (VMGI) 75 and the video manager information backup 77 (VMGI_B
UP) 77 is an indispensable item, and a video object set (VMGM_) for the video manager menu.
VOBS) 76 is an option. This VM
Video object set for GM (VMGM_VOB
S) 76 stores the video data, audio data, and sub-picture data of the menu related to the volume in the optical disc managed by the video manager 71.

The volume name of the optical disk, such as the reproduction of a video described later by the video object set (VMGM_VOBS) 76 for VMGM,
Along with the volume name display, a description of audio and sub-picture is displayed, and selectable items are displayed on the sub-picture. For example, a video object set for VMGM (VMG
M_VOBS) 76 is the video data that stores the match up to the boxer's world champion where the optical disk is, that is, the fighting pose of the boxer X is reproduced in the video data together with the volume name such as the glory history of the boxer X. Along with that, his theme song is displayed by voice, and his chronology is displayed on the sub-picture. In addition, it is inquired which language, such as English or Japanese, the game narration will be selected as a selection item, and whether subtitles in other languages will be displayed in the sub-picture, and which language subtitles will be selected. Inquire about whether or not. Video object set for this VMGM (V
With the MGM_VOBS) 76, the user will be ready to watch the Boxer X match video, for example, with the audio subtitling in Japanese as a sub-picture in English.

Here, the structure of the video object set (VOBS) 82 will be described with reference to FIG. FIG. 6 shows an example of the video object set (VOBS) 82. This video object set (VO
BS) 82 has three types of video object sets (VOBs) for two menus and for titles.
S) 76, 95, 96. That is, the video object set (VOBS) 82 includes a video title set (VTSM) 72 for menu and a video object set for menu (VTSM) of the video title set (VTS) 72 as described later.
_VOBS) 95 and a video object set (VTSTT_VOBS) 96 for the titles of at least one or more video title sets, and each video object set 82 has a similar structure except for its use.

As shown in FIG. 6, the video object set (VOBS) 82 is defined as a set of one or more video objects (VOB) 83, and the video object 8 in the video object set (VOBS) 82 is defined.
3 are provided for the same purpose. Normally, the video object set (VOBS) 82 for menu is composed of one video object (VOB) 83, and data for displaying a plurality of menu screens is stored. On the other hand, the video object set (V
The TSTT_VOBS) 82 is usually composed of a plurality of video objects (VOBs) 83.

Here, the video object (VOB) 8
3 corresponds to the video data of each match of Boxer X, for example, in the boxing video described above. It can be reproduced. Also, the video object set for the menu of the video title set 72 (VTSM_VO
BS) 95 stores the menu data of the match of the Boxer X, and according to the display of the menu, a specific match, for example, the 11th match to challenge the world championship can be designated. In a normal 1-story movie, one video object (VOB) 83 corresponds to one video object set (VOBS) 82, and one video stream corresponds to one video object set (VOB).
It will be completed in S) 82. In the animation collection or the omnibus movie, a plurality of video streams corresponding to each story are provided in one video object set (VOBS) 82, and each video stream is stored in the corresponding video object. Therefore, the audio stream and the sub-picture stream related to the video stream are also included in each video object (VO).
B) It will be completed in 83.

In the video object (VOB) 83,
An identification number (IDN # j) is added, and the video object (VOB) 83 can be specified by this identification number. Video Object (VOB) 83 is 1
Alternatively, it is composed of a plurality of cells 84. A normal video stream is composed of a plurality of cells, but a video stream for a menu, that is, a video object (VOB) 83 may be composed of one cell 84. Similarly, an identification number (C_IDN #
j) is added, and the cell 84 is specified by this cell identification number (C_IDN # j).

As shown in FIG. 6, each cell 84 includes one or a plurality of video object units (VOBU) 85, usually a plurality of video object units (VOBU).
It is composed of 85. Here, the video object unit (VOBU) 85 is defined as a pack string having one navigation pack (NV pack) 86 at the head. That is, the video object unit (VOB
U) 85 is defined as a set of all packs recorded from one navigation pack 86 to immediately before the next navigation pack. The playback time of this video object unit (VOBU) is the same as the number of GOPs included in the video object unit (VOBU).
Corresponding to the playback time of the video data, which is set to 0.4 seconds or more and not more than 1 second. According to MPEG, 1 GOP is normally 0.5 seconds and is defined as compressed screen data for reproducing about 15 images during that period.

When the video object unit includes video data as shown in FIG. 6, a video pack (V pack) 88, a sub-picture pack (SP pack) 90 and an audio pack (A pack) defined by the MPEG standard.
A video data stream is configured by arranging GOPs composed of 91, and a video object unit (VOBU) 85 is defined based on the reproduction time of the GOP regardless of the number of GOPs, and at the beginning thereof. , The navigation pack (NV pack) 86 is always arranged. Further, even in the reproduction data of only audio and / or sub-picture data, the reproduction data is configured with this video object unit as one unit. That is, even if a video object unit is composed of only audio packs, an audio pack to be played back within the playback time of the video object unit to which the audio data belongs is stored in the video object unit, like the video object of the video data. It

Referring again to FIG. 5, the video manager 7
1 will be described. The video management information 75 arranged at the head of the video manager 71 is information such as information about the video manager itself, information for searching for a title, information for playing a video manager menu, and video title attribute information. Title set (VT
S) 72 is described, and three tables 78, 79, 80 are recorded in the order shown in FIG. The respective tables 78, 79, 80 are aligned with the boundaries of logical sectors. The video management information management table (VMGI_MAT) 78, which is the first table, is an essential table and is the size of the video manager 71, the start address of each information in the video manager 71,
The start address of the video object set (VMGM_VOBS) 76 for the video manager menu and its attribute information are described. As will be described in detail later, this attribute information includes video attribute information, audio attribute information, and sub-picture attribute information. The mode of the decoders 58, 60, 62 is changed by these attribute information, and the video object set (VMGM_VOBS)
76 is played in the proper mode.

The second table of the video manager 71, the title search pointer table (TT
_SRPT) 79 describes the start address of the video title set included in the volume in the optical disc 10 that can be selected according to the key of the device and the input of the title number from the display unit 4.

The third table of the video manager 71, the video title set attribute table (VTS_A
The TRT) 80 describes the attribute information defined in the video title set (VTS) 72 in the volume of the optical disc. That is, the number of video title sets (VTS) 72 and the video title set (V
TS) 72 number, video attribute, for example, video data compression method, audio stream attribute, for example, audio coding mode, sub-video attribute, for example, sub-video display type, etc. in this table. Has been described.

Volume management information management table (VMG
Details of the description contents of the I_MAT) 78, the title search pointer table (TT_SRPT) 79, and the video title set attribute table (VTS_ATRT) 80 will be described below with reference to FIGS. 7 to 20.

As shown in FIG. 7, in the volume management information management table (VMGI_MAT) 78, the number of the video manager 71 identifier (VMG_ID) and logical block (1 logical block is 2048 bytes as described above) are recorded. Size of management information (VMGI_S
Z), the optical disc, commonly known as a digital versatile disc (digital versatile disc: hereinafter simply referred to as DV).
Called D. ) Version number (VER)
N) and the category of video manager 71 (VMG
_CAT) is described.

Here, in the category (VMG_CAT) of the video manager 71, a flag or the like indicating whether or not copying is prohibited by the DVD video directory is described. In addition, this table (VMGI_MAT) 78
Includes the volume set identifier (VLMS_ID),
Number of video title sets (VTS_Ns), identifier of supplier of data recorded on this disc (PVR_I
D), the start address (VMGM_VOBS_SA) of the video object set (VMGM_VOBS) 76 for the video manager menu, and the volume manager information management table (VMGI_MAT) 78.
End address (VMGI_MAT_EA) and the start address (TT_SRPT_SA) of the title search pointer table (TT_SRPT) 79 are described. Video object set (V
If the MGM_VOBS) 95 does not exist, its start address (VMGM_VOBS_SA) has “00000”.
000h ”is described. The end address (VMGI_MAT_EA) of VMGI_MAT78 is VMGI_M.
Described by the relative number of bytes from the beginning of AT78, T
Start address of T_SRPT79 (TT_SRPT
_SA) is described as the number of logical blocks relative to the first logical block of the VMGI 75.

Further, this table 78 includes an attribute table (VTS_A) of the video title set (VTS) 72.
TRT 80 start address (VTS_ATRT_
SA) is VMGI manager table (VMGI_M
AT) 71 is described by the relative number of bytes from the first byte, and the video attribute (VMGM_V_) of the video manager menu (VMGM) video object set 76 is described.
ATR) is described. Furthermore, this table 7
8, the number of audio streams (VMGM_AST_Ns) of the video manager menu (VMGM),
The audio stream attribute (VMGM_AST_ATR) of the video manager menu (VMGM), the number of sub-picture streams (VMGM_SPST_Ns) of the video manager menu (VMGM), and the sub-picture stream attribute (VMGM_SPST_ATR) of the video manager menu (VMGM) are described. There is.

In the video attribute (VMGM_V_ATR), the compression mode, frame rate, and display aspect ratio are set as the attributes of the video object set 76 video of the video manager menu (VMGM) from bit number b8 to bit number b15 as shown in FIG. , And the display mode are described, and bit number b0 to bit number b7
Is reserved for future use as a reservation. When "00" is described in the bit numbers b15 and b14, MP
This means that the menu video data is compressed in the video compression mode based on the EG-1 standard, and when "01" is described in the bit numbers b15 and b14,
It means that the menu video data is compressed in the video compression mode based on the MPEG-2 standard, and other descriptions are reserved as future reservations. When "00" is described in the bit numbers b13 and b12, it means that the menu video data has a frame rate (29.27 / S) at which 29.27 frames per second are reproduced. That is, bit numbers b13 and b1
When "00" is described in 2, the menu video data is the video data for the TV system adopting the NTSC system, and one frame has a horizontal scanning frequency of 6
This means that a frame rate for drawing with 525 scanning lines at 0 Hz is adopted. Also, the bit number b1
When "01" is described in 3 and b12, it means that the menu video data has a frame rate (25 / S) at which 25 frames per second are reproduced. That is, it means that the video data for a TV system adopting the PAL system adopts a frame rate for drawing one frame with a frequency of 50 Hz and 625 scanning lines. Other descriptions of bit numbers b13 and b12 are as follows:
It is reserved as a reservation for future use.

Further, the bit numbers b11 and b10 are "0".
If "0" is described, it means that the display video aspect ratio (vertical / horizontal ratio) of the menu video data is 3/4, and the bit numbers b11 and b10 are "1".
If "1" is described, it means that the display video data has a display aspect ratio (vertical / horizontal ratio) of 9/16, and other descriptions are reserved for future use. ing.

Further, when the display aspect ratio is 3/4, that is, when "00" is described in the bit numbers b11 and b10, the bit numbers b9 and b8 include
"11" is described. Display aspect ratio is 9/16
, That is, the bit numbers b11 and b10 are "1".
When "1" is described, it is described whether or not the menu video data is permitted to be pan-scanned and / or displayed in letterbox. That is, "00" is set in the bit numbers b9 and b8. When described, it means that display in both pan scan and letterbox is permitted. When "01" is described in bit numbers b9 and b8, display in pan scan is performed. This means that letterbox display is prohibited, and if "10" is described in bit numbers b9 and b8, display in pan scan is prohibited, This means that the display is allowed by letterbox, and when "11" is described in the bit numbers b9 and b8, it means that it is not specified.

The relationship between the video data recorded on the above-mentioned optical disk and the reproduced screen image on the TV monitor 6 is shown in FIG. With respect to the video data, since the display aspect ratio is described in the bit numbers b11 and b10 and the display mode is described in the bit numbers b9 and b8 as the above-mentioned attribute information, the display as shown in FIG. 9 is performed. Original display aspect ratio (bit number b11,
The image data whose b10 is "00") is 3/4 is compressed and recorded as it is. That is, as shown in FIG. 9, image data in which a circle is drawn in the center and four small circles are arranged around the circle has display modes of normal (bit numbers b9 and b8 are "00") and pan scan (bits). Whether the numbers b9 and b8 are “01” and the letterbox (bit numbers b9 and b8 are “10”), T
On the TV monitor 6 having a V aspect ratio of 3/4, a circle is drawn as it is without changing the display form, and four small circles are displayed around the circle. Further, the image data is displayed as an image in which a circle is drawn in the center without changing the display form even on the TV monitor 6 having a TV aspect ratio of 9/16, and four small circles are arranged around the circle. As a result, only non-image areas are generated on both sides of the screen of the TV monitor 6.

On the other hand, the image data having a display aspect ratio (bit numbers b11 and b10 of "11") of 9/16 is compressed in a vertically elongated display so as to have an aspect ratio of 3/4. Is recorded. That is, originally, a circle is drawn in the center, four small circles are arranged around the circle, and a small circle is arranged outside the small circle. One large circle and eight small circles. An image having an aspect ratio is compressed and recorded as data in which all circles are transformed into a vertically long display. Therefore, when the display mode is normal (bit numbers b9 and b8 are "00"),
On the TV monitor 6 having a TV aspect ratio of 3/4, a vertically elongated circle is drawn as it is without changing the display form, four vertically elongated small circles are arranged around it, and vertically elongated small circles are arranged outside the small circle. One large circle with circles and 8
It is displayed as an image with two small circles.

On the other hand, when the display mode is pan scan (bit numbers b9 and b8 are "01"), the shape of the circle is not vertically long and is drawn as an original circle, but the periphery of the screen is displayed. Is trimmed, the small circle outside the small circle is cut, a circle is drawn in the center, and four small circles are arranged around it to be displayed on the TV monitor 6 having a TV aspect ratio of 3/4. It Also, when the display mode is letterbox (bit numbers b9 and b8 are “10”), the aspect ratio does not change, so the shape of the circle is not vertically long and is drawn as the original circle. The screen, that is, one big circle and eight small circles are displayed,
In the upper and lower areas on the screen, an image is displayed on the TV monitor 6 having a TV aspect ratio of 3/4 without being displayed. Naturally, TV aspect ratio 9/1
On the TV monitor 6 having 6, since the display aspect ratio of the image data (bit numbers b11 and b10 is “11”) is matched, a normal circle is drawn in the center as it is and four normal small circles are drawn around it. Is displayed, and is displayed as an image having one large circle and eight small circles in which normal small circles are also arranged outside the small circle.

As described above, when the image data having the display aspect ratio (bit numbers b11 and b10 are "11") of 9/16 is displayed on the TV monitor 6 having the TV aspect ratio of 3/4, the screen is displayed. An image is not displayed in the upper and lower areas, but in this area, one frame is drawn at a horizontal scanning frequency of 60 Hz with 525 scanning lines (bit numbers b13 and b12 are "01").
Is described. ), The 72 horizontal scanning lines above and below are black (Y = 16, U = V = 128) as shown in FIG. 10A.
Will be drawn and will be displayed as black. Further, in the case of a frame rate in which one frame is drawn with a frequency of 50 Hz and a number of scanning lines of 625 (“00” is described in bit numbers b13 and b12), this portion is 60 lines above and below as shown in FIG. 10A. Horizontal scanning line is black (Y = 16, U = V = 1
28) will be drawn and will also be displayed as black.

Again, the contents of the table shown in FIG. 7 will be described. Video manager menu (VMGM)
Audio stream attributes (VMGM_AST_A
TR) has a bit number b63 as shown in FIG.
To bit number b48 describe the audio coding mode, audio type, audio application ID, quantization, sampling frequency, and the number of audio channels, and bit numbers b47 to b0 are reserved for future use. . VMG
If there is no M video object set 76, or
If there is no audio stream in the video object set, bit number b63 to bit number b0
"0" is described in each bit of. Audio coding modes are bit number b63 to bit number b61
It is described in. When "000" is described in this audio coding mode, Dolby AC-3
(Trademark of Dolby Labratories Licensing Corporation)
Means that the audio data is coded, and when "010" is described in the audio coding mode, MPEG is used without an extension bit stream.
-1 or MPEG-2 means that the audio data is compressed. When "011" is described in the audio coding mode, it means that the audio data is compressed by MPEG-2 with the extension bit stream, and "100" is described in the audio coding mode. In case of linear P
It means that audio data is coded in CM. For audio data, the other description is
It is reserved for future use. In the attribute of video data, a frame rate (VMGM_V_ATR) in which one frame is drawn with a horizontal scanning frequency of 60 Hz and 525 scanning lines
If "00" is written in the bit numbers b13 and b12 in the above), Dolby AC-3 (bit number b6
3, b62, b61 are "000") or linear PC
M (bit numbers b63, b62, b61 are "100")
Should be set. Further, in the attribute of video data, a frame rate (VMGM_V_) at which one frame is drawn with a frequency of 50 Hz and 625 scanning lines is used.
In the ATR, the bit number b13, b12 is "0".
0 "is described.) In the case, MPEG-1, MPE
G-2 (bit numbers b63, b62, b61 are "01"
0 "or" 011 ") or linear PCM (bit numbers b63, b62, b61 are" 100 ") should be set.

The audio type is described in the bit numbers b59 and b58. If not specified, "00" is described, and the others are reserved. Further, the ID of the audio application field is described in the bit numbers b57 and b56, and if not specified, "00" is described.
Others are reserved. Further, the quantization of audio data is described in bit numbers b55 and b54, and when the bit numbers b55 and b54 are "00",
It means that the audio data is quantized with 16 bits, and if the bit numbers b55 and b54 are “01”, it means that the audio data is quantized with 20 bits, and the bit numbers b55 and b54 are "10" means that the audio data is quantized with 24 bits, and the bit numbers b55 and b54 are "1".
In the case of 1 ", it is not specified. Here, the audio coding mode is linear PCM (bit number b
When 63, b62 and b61 are set to "100"), quantization is not specified (bit numbers b55 and b5).
4 is “11”). The sampling frequency Fs of audio data is described in bit numbers b53 and b52, and the sampling frequency Fs is 48 kHz.
When it is z, "00" is described, when the sampling frequency Fs is 96 kHz, "01" is described, and the others are reserved.

The number of audio channels is described in bit numbers b50 to b48.
When b49 and b48 are “000”, it means that there is one channel (monaural), and the bit number b5
When 0, b49, and b48 are “0001”, 2
It means that it is a channel (stereo). Also, if the bit numbers b50, b49, b48 are "010", it means that there are three channels, and if the bit numbers b50, b49, b48 are "011", there are four channels. Means the bit number b
If 50, b49 and b48 are "100", 5
Means a channel, and bit numbers b50, b
When 49 and b48 are "101", it means that there are 6 channels, and bit numbers b50, b49, and b.
When 48 is “110”, it means that there are 7 channels, and when bit numbers b50, b49 and b48 are “111”, it means that there are 8 channels.

The attribute (V of the sub-picture stream of the video manager menu (VMGM) in the table shown in FIG.
In MGM_SPST_ATR), as shown in FIG. 12, a sub-picture coding mode, a sub-picture display type, and a sub-picture type are described from bit number b47 to bit number b40. When "000" is described in the bit numbers b47, b46, and b45 as the description of the sub-picture coding mode, it is stated that the sub-picture data is run-length compressed based on the 2-bit / pixel type standard. Is
Bit number b47 as a description of the sub-picture coding mode,
When "001" is described in b46 and b45, it is described that the sub-picture data is run-length compressed based on another standard, and the others are reserved.

The sub-picture display type has a bit number b44,
Described in b43 and b42, the display aspect ratio in VMGM_V_ATR is 3/4 (bit numbers b11 and b10).
Is "00"), bit numbers b44, b43, b4
In “2”, “000” is described, which means that this attribute information is not used. In addition, VMGM_V_AT
The display aspect ratio during R is 9/16 (bit number b1
1 and b10 are “11”), and bit numbers b44 and b4
If b3 and b42 are "001", it means that this sub-picture stream allows only wide display, and bit number b
When 44, b43, and b42 are "010", it means that this sub-picture stream allows only letterbox display, and the bit numbers b44, b43, and b42 are "011".
In this case, this sub-picture stream means that this sub-picture stream allows both wide display and letterbox display, and bit numbers b44, b43, and b42 are "1".
In the case of "00", this sub video stream means that this sub video stream allows only pan scan display.
When the bit numbers b44, b43, b42 are "110", it means that this sub-picture stream allows both pan scan display and letterbox display, and when the bit numbers b44, b43, b42 are "111". Means that this sub-picture stream allows all pan-scan display, letterbox display and wide display. Furthermore, for the sub-picture type, bit numbers b41 and b4
When 0 is described and the bit numbers b41 and b40 are "00", no specification is made and the others are reserved.

The structure shown in FIG. 5 will be described again.
The title search pointer table (TT_
In the SRPT) 79, as shown in FIG. 13, the information (TSPTI) of the title search pointer table is described first, and then the number of title search pointers (TT_SRP) for the input numbers 1 to n (n ≦ 99) is required. Only listed continuously. When only one title of reproduction data, for example, one title of video data is stored in the volume of this optical disc, only one title search pointer (TT_SRP) 93 is described in this table (TT_SRPT) 79.

The title search pointer table information (TSPTI) 92 contains the number of entry program chains (EN_PGC_Ns) as shown in FIG.
And the end address (TT_SRPT_EA) of the title search pointer (TT_SRP) 93 are described. This address (TT_SRPT_EA) corresponds to this title search pointer table (TT_SRPT) 79.
It is described by the relative number of bytes from the first byte of. Further, as shown in FIG. 15, each title search pointer (T
T_SRP) contains the video title set number (VTS
N), program chain number (PGCN) and start address (VTS_S) of video title set 72.
A) is described.

This title search pointer (TT_SR
P) 93, a video title set (VTS) 72 reproduced according to the content of the program chain (PG)
C) is specified and its video title set 7
The storage position of 2 is specified. Video title set 72
The start address (VTS_SA) is described by the number of logical blocks in the title set designated by the video title set number (VTSN).

Here, the program chain 87 is defined as a set of programs 89 that reproduce the story of a certain title as shown in FIG. In the program chain for menus, still picture or moving picture programs are reproduced one after another to complete one title menu. Also, in the case of the program chain for the title set, the program chain corresponds to a chapter with a certain story consisting of multiple programs, and the program chain is continuously reproduced.
The title movie is completed. As shown in FIG. 16, each program 89 is defined as a set of the cells 84 which have already been described and are arranged in the reproduction order.

As shown in FIG. 5, the video title set attribute table information (VTS_ATRT) 80 describing the attribute information of the video title set (VTS) 72 is the video title set attribute table information (VTS_ATRT).
I) 66, n video title set attribute search pointers (VTS_ATR_SRP) 67 and n video title set attributes (VTS_ATR) 68, which are described in that order. The information of this table 80 is described in the video title set attribute table information (VTS_ATRTI) 66, and the video title set attribute search pointer (VTS_ATR_SRP) 67.
Are searched in the order corresponding to the title sets # 1 to #n, and similarly, the video title set attributes (VTS_ATR) 68 described in the order corresponding to the title sets # 1 to #n are searched. Described about pointers. Also, in each of the video title set attributes (VTS_ATR) 68, the attributes of the corresponding title set (VTS) are described.

More specifically, the video title set attribute table information (VTS_ATRTI) 66 is shown in FIG.
As shown in, the number of video titles is a parameter (VTS
_Ns), and the end address of the video title set attribute table (VTS_ATRT) 80 is described as a parameter (VTS_ATRT_EA). Further, as shown in FIG. 19, each video title set attribute search pointer (VTS_ATR_SRP)
67, the corresponding video title set attributes (VTS
_ATR) 68 start address is the parameter (VTS_
ATR_SA). Furthermore, the video title set attribute (VTS_ATR) 68 has a value shown in FIG.
This video title set attribute (VTS_
The end address of the ATR) 68 is the parameter (VTS_A
TR_EA), and the category of the corresponding video title set is described as a parameter (VTS_CAT). Furthermore, in the video title set attribute (VTS_ATR) 68, attribute information of the corresponding video title set is set as a parameter (VTS_ATR).
I). The attribute information of this video title set is the video title set information management table (VTS_M) which will be described later with reference to FIGS. 21 and 22.
Since the same content as the attribute information of the video title set described in (AT) is described, the description thereof will be omitted.

Next, the structure of the logical format of the video title set (VTS) 72 shown in FIG. 4 will be described with reference to FIG. Each video title set (V
In the TS) 72, four items 94, 95, 96 and 97 are described in the order of description as shown in FIG. Each video title set (VTS) 72 is composed of one or more video titles having a common attribute, and management information about this video title 72, for example, information for reproducing the video object set 96, Information for reproducing the title set menu (VTSM) and attribute information of the video object set 72 are described in the video title set information (VTSI).

This video title set information (VTS
I) 94 backup 97 is provided in the video title set (VTS) 72. Video title set information (VTSI) 94 and backup of this information (V
TSI_BUP) 97 and the video object set (VTSM_) for the video title set menu.
VOBS) 95 and video object set for video title set title (VTSTT_VOBS) 9
6 are arranged. Which video object set (VTSM_VOBS and VTSTT_VOBS) 9
5, 96 have the structure shown in FIG. 6 as already described.

Video title set information (VTSI) 9
4. Backup of this information (VTSI_BUP) 97
A video object set (VTSTT_VOBS) 96 for a video title set title is an essential item for the video title set 72, and a video object set (VTSTT_VOBS) 96 for a video title set menu (VTSTT_VOBS).
TSM_VOBS) 95 is an option provided as needed.

Video title set information (VTSI) 9
4 includes seven tables 98, 99, as shown in FIG.
100, 101, 111, 112, 113, and these seven tables 98, 99, 100, 101,
111, 112, and 113 are aligned with the boundaries between the logical sectors. The video title set information management table (VTSI_MAT) 98, which is the first table, is an essential table, and the video title set (VTS) 7
2 size, start address of each information in video title set (VTS) 72 and video title set (VT
S) Video Object Set (VOBS) 8 in 72
Two attributes are described.

The second table, the video title set part of title search pointer table (VTS
_PTT_SRPT) is an indispensable table and is a portion of the video title that can be selected according to the number input by the user from the key operation / display unit 4 of the device, that is, the program included in the selectable video title set 72. A chain (PGC) and / or program (PG) is described. When the user operates the key operation / display unit 4 to specify an arbitrary number from the input numbers described in the pamphlet along with the distribution of the optical disc 10, the user can watch the video from the portion in the story corresponding to the input number. This selectable title part can be arbitrarily set by the title provider.

The third table, the video title set program chain information table (VTS_PGCI)
T) 100 is an indispensable table and describes information about the VTS program chain, that is, VTS program chain information (VTS_PGCI).

The fourth table, the video title set menu PGCI unit table (VTSM_PG
CI_UT) 111 is a video object set (VTSM_VOBS) for the video title set menu.
95 is provided, it is an indispensable item, and the video title set menu (VTS) is provided for each language.
Information about a program chain for reproducing M) is described. This video title set menu PGCI unit table (VTSM_PGCI_U
By referring to (T) 111, the program chain of the designated language in the video object set (VTSM_VOBS) 95 can be acquired and reproduced as a menu.

Video title set time search map table (VTS_MAPT) 1 which is the fifth table
Reference numeral 01 is an optional table provided as necessary, and contains information on the recording position of the video data in each program chain (PGC) of the title set 72 to which this map table (VTS_MAPT) 101 belongs for a fixed time of playback display. It has been described.

Video title set cell address table (VTS_C_ADT) 112, which is the sixth table.
Is an indispensable item, and as described with reference to FIG. 6, the addresses of the cells 84 forming all the video objects 83 or the addresses of the cell pieces forming the cells are described in the order of the identification numbers of the video objects. ing. Here, the cell piece is a piece that constitutes a cell, and cells are arranged in the video object 83 by interleaving processing based on this cell piece.

The seventh table, which is the video title set video object unit address map (VTS
_VOBU_ADMAP) 113 is a required item,
The start addresses of the video object units 85 in the video title set are all listed in the order of arrangement.

22 to 3 of the video title information manager table (VTSI_MAT) 98 and the video title set program chain information table (VTS_PGCIT) 100 shown in FIG.
This will be described with reference to FIG.

FIG. 22 shows the description contents of the video title information manager table (VTSI_MAT) 98. In this table (VTSI_MAT) 98,
Video title set identifier (VTS_I
D), the size of the video title set 72 (VTS_S
Z), the version number of this DVD video standard (VER
N), category of video title set 72 (VTS
_CAT) and the end address (VTSI_MAT_EA) of the video title information manager table (VTSI_MAT) 98 are described. Further, the table (VTSI_MAT) 98 has a start address (V of the video object set (VTSM_VOBS) 95 of the VTS menu (VTSM).
The start address of the video object start address (VTSTT_VOB_SA) for the title in the TSM_VOBS_SA) and the video title set (VTS) is described. VTS menu (VTS
M) video object set (VTSM_VOB
If S) 95 does not exist, its start address (VTSM
“_0000BS” is described in _VOBS_SA). End address of VTSI_MAT (VTSI
_MAT_EA) is described by the relative number of bytes from the first byte of the video title set information management table (VTSI_MAT) 94, and the start address (VTSM_VOBS_SA) and VTSTT_V of VTSM_VOBS.
OB start address (VTSTT_VOB_SA) is
It is described by the relative logical block number (RLBN) from the head logical block of this video title set (VTS) 72.

Further, this table (VTSI_MAT)
98 includes a video title set part of title search pointer table (VTS_PTT_SRPT) 9
9 start address (VTS_PTT_SRPT_S
A) is described by the number of relative blocks from the head logical block of the video title set information (VTSI) 94. The table (VTSI_MAT) 98 also includes a start address (VTS_PGCIT_SA) of the video title set program chain information table (VTS_PGCIT) 100 and a PGCI unit table (VTS_P) for the video title set menu.
Start address (VTS_P) of GCI_UT) 111
GCI_UT_SA) is video title set information (V
The start address (VTS_MAPT_SA) of the time search map table (VTS_MAPT) 101 of the video title set (VTS) is described by the number of relative blocks from the start logical block of the video title set (VTS) 72. From the relative logical sector. Similarly, VTS address table (VTS_C_ADT) 112 and VTS_
Address map of VOBU (VTS_VOBU_ADM
AP) 113 has this video title set (VTS) 7
It is described by a relative logical sector from the first logical sector of 2.

In this table (VTSI_MAT) 98, the video attribute (VTSM_V_ATR) of the video object set (VTSM_VOBS) 95 for the video title set menu (VTSM) in the video title set (VTS) 72, the number of audio streams (VTSM_AST_Ns). Further, its audio stream attribute (VTSM_AST_ATR), the number of sub-picture streams (VTSM_SPST_Ns) and its sub-picture stream attribute (VTSM_SPST_ATR) are described. Similarly, this table (VTSI_MAT)
In 98, the title (VTST) of the video title set (VTS) in the video title set (VTS) 72 is displayed.
Video object set (VTST_VO)
BS) 96 video attribute (VTS_V_ATR), audio stream number (VTS_AST_Ns), and its audio stream attribute (VTS_AST_AT)
R), the number of sub-picture streams (VTS_SPST_Ns)
And its sub-picture stream attribute (VTS_SPST_A
TR) is described. Further, the attribute (VTS_MU_AST_ATR) of the multi-channel audio stream of the video title set (VTS) is described in this table (VTSI_MAT) 98.

The video attributes, audio stream attributes and sub-picture stream attributes described in FIG. 22 will be described in detail below. Video attributes (VTSM_VOBS) 95 video attributes for VTSM (VTSM_
V_ATR) and video title set title (VT
Video Object Set (VTSTT) for STT
_VOBS) 96 video attributes (VTS_V_ATR)
Includes the video attribute (VMGM_VOBS) of the video object (VMGM_VOBS) for the video manager menu, which has already been described with reference to FIGS. 8, 9 and 10A and 10B.
(V_ATR), the same attribute information is described. That is, the video attributes (VTSM_V_ATR) and (VTS
In _V_ATR), compression mode, frame rate, display aspect ratio, and display mode are described as the attributes of the video object set 76 video of the video manager menu (VMGM) from bit number b8 to bit number b15 as shown in FIG. The bit numbers b0 to b7 are reserved for future use as reservations. When "00" is described in the bit numbers b15 and b14, it means that the menu video data is compressed in the video compression mode based on the MPEG-1 standard, and the bit numbers b15 and b14 are " When "01" is described, it means that the menu video data is compressed in the video compression mode based on the MPEG-2 standard, and other descriptions are reserved for future use. There is. When "00" is described in the bit numbers b13 and b12, the menu video data is 2 per second.
A frame rate (29.
27 / S). That is, when "00" is described in the bit numbers b13 and b12, the menu video data is T which is based on the NTSC system.
This is video data for V system, which means that a frame rate for drawing one frame with a horizontal scanning frequency of 60 Hz and 525 scanning lines is adopted. When "01" is described in the bit numbers b13 and b12, it means that the menu video data has a frame rate (25 / S) at which 25 frames per second are reproduced. That is, it is video data for a TV system adopting the PAL system, and one frame has a frequency of 50H.
This means that a frame rate for drawing with 625 scanning lines is used for z. Other descriptions of the bit numbers b13 and b15 are reserved for future use as reserved.

Further, the bit numbers b11 and b10 are "0".
If "0" is described, it means that the display video aspect ratio (vertical / horizontal ratio) of the menu video data is 3/4, and the bit numbers b11 and b10 are "1".
If "1" is described, it means that the display video data has a display aspect ratio (vertical / horizontal ratio) of 9/16, and other descriptions are reserved for future use. ing.

Further, when the display aspect ratio is 3/4, that is, when "00" is described in the bit numbers b11 and b10, the bit numbers b9 and b8 include
"11" is described. Display aspect ratio is 9/16
, That is, the bit numbers b11 and b10 are "1".
When "1" is described, it is described whether or not the menu video data is permitted to be pan-scanned and / or displayed in letterbox. That is, "00" is set in the bit numbers b9 and b8. When described, it means that display in both pan scan and letterbox is permitted. When "01" is described in bit numbers b9 and b8, display in pan scan is performed. This means that letterbox display is prohibited, and if "10" is described in bit numbers b9 and b8, display in pan scan is prohibited, It means that the display is allowed by letterbox.When "11" is described in the bit numbers b9 and b8, it means that it is not specified. Video data and the TV monitor on 6 reproduction subscription - the relationship between the emission image, 9 and 1
The description is omitted because it is the same as the description with reference to 0A and 10B.

The audio stream attribute (VTSM_AST_ATR) of the video object set (VTSM_VOBS) 95 for VTSM and the audio stream attribute (VTS_AST_ATR) of the video object set (VTST_VOBS) 96 for the video title set title (VTSTT) are set. Attribute information substantially similar to the audio stream attribute (VMGM_AST_ATR) of the video object for the video manager menu (VMGM_VOBS) described with reference to FIG. 11 is described. That is, VTS menu video object set (VTSM_VOBS)
95 audio stream attributes (VTSM_AST
_ATR) has a bit number b as shown in FIG.
63 to bit number b48 describe the audio coding mode, audio type, audio application ID, quantization, sampling frequency, and the number of audio channels. Bit numbers b47 to bit number b0 are reserved for future use. ing. As shown in FIG. 23, in the audio stream attribute (VTS_AST_ATR) of the video title set title (VTST), the audio coding mode, multi-channel extension, audio type, and audio application ID are set from bit number b63 to bit number b48. Quantization, sampling frequency, reservation, and the number of audio channels are described, and bit number b4
7 to bit number b40 and bit numbers b39 to b32 describe specific codes, and bit numbers b31 to b24 have reservations for specific codes. The bit numbers b23 to b8 are reserved for future use, and the bit number b8 to bit number b0 describes application information. Here, if there is no VTS menu video object set (VTSM_VOBS) 95, or if there is no audio stream in the video object set, “0” is described in each bit from bit number b63 to bit number b0. ..

VTSM and VTST audio stream attributes (VTSM_AST_ATR, VTS_AS
In any of T_ATR), the audio coding mode is described in bit numbers b63, b62, and b61. "0" for this audio coding mode
When "00" is described, it means that audio data is coded by Dolby AC-3, and when "010" is described in the audio coding mode, MPEG- is used without an extended bit stream. 1 or MPEG-2 means that the audio data is compressed, and when "011" is described in the audio coding mode, the extension bit stream is provided and the audio data is encoded by MPEG-2. This means that the audio data is compressed, and if "100" is described in the audio coding mode, it means that the audio data is encoded by the linear PCM. Is reserved for future use. In the attributes of video data,
Horizontal scanning frequency of 60 Hz for one frame 525 scanning lines
Frame rate drawn in a book (VTSM_V_ATR and V
In the TS_V_ATR, “00” is described in the bit numbers b13 and b12. ) In case of Dolby AC-3
(Bit numbers b63, b62, b61 are "000") or linear PCM (bit numbers b63, b62, b6)
1 is set to "100"). Also, in the attribute of the video data, in the case of a frame rate of drawing one frame at a frequency of 50 Hz with 625 scanning lines (“00” is described in bit numbers b13 and b12 in VTSM_V_ATR and VTS_V_ATR), MPEG-1. , MPEG-2 (bit numbers b63, b62, b61 are "010" or "01"
1 ") or linear PCM (bit numbers b63, b6
2, b61 should be set to "100"). VTST audio stream attributes (V
In the audio coding mode of (TS_AST_ATR), the extension of multi-channel is described in the bit number b60. When the bit number b60 is "0", the VTS related to the audio stream is written.
Multi-channel audio stream attributes (VTS
_MU_AST_ATR) is invalid, and when the bit number b60 is “1”, the multi-channel audio stream attribute (VTS_MU_AST_AT) of the VTS related to the audio stream is set.
R) means to be linked.

The audio type is described in the bit numbers b59 and b58, "00" is described if not specified, and "0" in the case of language, that is, human voice.
1 "is described and the others are reserved. The IDs of the audio application fields are bit numbers b57 and b.
56, if not specified, “00” is described, in the case of karaoke, “01” is described, in the case of surround, “10” is described, and the others are reserved. . Further, regarding the quantization of audio data, it is described in bit numbers b55 and b54. When the bit numbers b55 and b54 are "00", it means that the audio data is quantized with 16 bits, and the bit number If b55 and b54 are “01”, it means that the audio data is quantized by 20 bits,
2 if the bit numbers b55 and b54 are "10"
This means that the audio data is quantized with 4 bits, and when the bit number numbers b55 and b54 are "11", it is not specified. Here, the audio coding mode is linear PCM (bit numbers b63, b
When 62 and b61 are set to "100"), quantization is not specified (bit numbers b55 and b54 are "11"). Regarding the sampling frequency Fs of the audio data, bit numbers b53 and b5
2 is described, "00" is described when the sampling frequency Fs is 48 kHz, "01" is described when the sampling frequency Fs is 96 kHz, and the others are reserved.

The number of audio channels is described in bit numbers b50 to b48.
When b49 and b48 are “000”, it means that there is one channel (monaural), and the bit number b5
When 0, b49, and b48 are “0001”, 2
It means that it is a channel (stereo). Also, if the bit numbers b50, b49, b48 are "010", it means that there are three channels, and if the bit numbers b50, b49, b48 are "011", there are four channels. Means the bit number b
If 50, b49 and b48 are "100", 5
Means a channel, and bit numbers b50, b
When 49 and b48 are "101", it means that there are 6 channels, and bit number numbers b50 and b4.
When 9 and b48 are “110”, it means that there are 7 channels, and bit numbers b50, b49 and b4.
When 8 is "111", it means that there are 8 channels. Here, three or more channels are multi-channel. The specific code is described in b47 to b40 and b39 to b32, but here, when the type of the audio stream is a language, that is, in the case of voice, the code of the language defined in ISO-639 is a language. Described with a symbol. If the type of audio stream is not language, ie audio, then this area is reserved.

Number of VTS audio streams (VTS
_AST_Ns) is set between 0 and 8. Therefore, 8 VTS audio stream attributes (VTS_AST_ATR) corresponding to the settable number of streams
Is prepared. That is, VTSs from VTS audio stream # 0 to VTS audio stream # 7
When the area of the audio stream attribute (VTS_AST_Ns) is provided, and there are less than eight VTS audio streams and there is no corresponding audio stream, the VTS audio stream attribute (VTS_AST_VST_AST_VST_AST_VST_AST_VST_AST_ST_N_STV_ST_AST_ST_NST) shown in FIG.
In the description of Ns), all bits are “0”.

Further, the sub-picture stream attribute (VTSM_SPST_ATR) of the video object set (VTSM_VOBS) 95 for the VTSM and the sub-picture stream attribute (VTS_SPST_ATR) of the video object set (VTST_VOBS) 96 for the video title set title (VTSTT). Already in Figure 1
The same attribute information as the sub-picture stream attribute (VMGM_SPST_ATR) of the video manager menu video object (VMGM_VOBS) described with reference to 1 is described. That is, in the sub-picture stream attribute (VTSM_SPST_ATR) of the video object set (VTSM_VOBS) 95 for the VTSM, the sub-picture coding mode, sub-picture display type, sub-picture, and sub-picture display type The video type is described, and bit numbers b39 to b0 are reserved. In the sub-picture stream attribute (VTS_SPST_ATR) of the video object set (VTST_VOBS) 96 for VTSTT, the sub-picture coding mode, sub-picture display type, and sub-picture type from bit number b47 to bit number B40 as shown in FIG. Is described, the specific code is described in the bit number b39 to the bit number b32, and the specific code is described in the bit number b31 to the bit number b24. It describes the extension of a specific code. Furthermore, from bit number b7 to bit number b
0 is reserved.

When "000" is described in the bit numbers b47, b46, b45 as the description of the sub-picture coding mode, the sub-picture data is run-length compressed based on the standard of 2 bits / pixel type. And the bit number b4 as a description of the sub-picture coding mode.
When "001" is described in 7, b46 and b45, it is described that the sub-picture data is run-length compressed based on another standard, and the others are reserved. In the reservation, for example, the fact that the encoding method of Row indicating that the sub-picture data is not compressed may be described.

The sub-picture display type is bit number b44,
Described in b43 and b42, the display aspect ratio in VTSM_V_ATR or VMGM_V_ATR is 3
/ 4 (bit numbers b11 and b10 are "00"),
“000” is described in the bit numbers b44, b43, b42, and this attribute information means that it is not used. In addition, V TSM_V_ATR or VMGM_V
The display aspect ratio in _ATR is 9/16 (bit numbers b11 and b10 are “11”), and bit numbers b44 and b
When 43 and b42 are "001", it means that this sub-picture stream allows only wide display. When bit numbers b44, b43 and b42 are "010", this sub-picture stream is letterboxed. This means that only the display is permitted, and the bit numbers b44, b43, and b42 are "01".
In the case of 1 ", this sub-picture stream means that this sub-picture stream allows both wide display and letterbox display. When the bit numbers b44, b43, b42 are" 100 ", this sub-picture stream is displayed. The video stream means that this sub-video stream allows only pan-scan display. When the bit numbers b44, b43, and b42 are "110", this sub-video stream displays both pan-scan display and letterbox display. This means that it is permitted, and when the bit numbers b44, b43, b42 are “111”,
This means that this sub-picture stream allows all pan-scan display, letterbox display and wide display. Furthermore, for the sub-picture type, bit number b4
1 and b40 and the bit numbers b41 and b40 are “00”, the bit number b4 is not specified.
When 1 and b40 are "01", it means that the language is a subtitle. Bit number b41, b40
Other descriptions are reserved. An example of this reservation is
There are pictures etc.

Specific codes are described in bit number b39 to bit number b32 and in bit number b31 to bit number b24. Here, when the type of the sub-picture stream is language or caption, ISO-639 is used. The code of the language defined in 1. is described by the language symbol.
If the sub-picture stream type is not language, this area is reserved. Further, the extension of the specific code described in the bit number b15 to the bit number b8 describes the character type of the subtitle. This bit number b
When "00h" is described in the bit number b8 from 15, it means that the character of the sub-picture stream is a normal character or is not classified, and "01h" is described in the bit number b15 to bit number b8. In this case, it means that the character is large, and the others are set by the system or determined by the video provider.

Number of sub-pictures in VTS menu (VTSM_S
PST_Ns) is basically one, but can be set to a number between 0 and 3. In this case, the attributes (VTSM_SPST_ATR) of the sub-picture of the VTS menu are described in the order of sub-picture stream number # 0, stream number # 1, and stream number # 2, each of which has the description as shown in FIG. When the number of sub-picture streams of the VTS menu (VTSM_SPST_Ns) is smaller than 3, the attribute of the sub-picture of the VTS menu (VTSM_) corresponding to the sub-picture stream of the non-existing VTS menu.
In "SPST_ATR)," 0 "is described in all bits. Number of VTS sub-picture streams (VTS_SPS
T_Ns) can be set to a number between 0 and 32. In this case, the attributes of the VTS sub-picture (VTS_SPST_A
TR) is described in the order of stream number # 0 to stream number # 31 of the sub-pictures each having the description as shown in FIG. Number of VTS sub-picture streams (VTS_S
If PST_Ns) is smaller than 32, all bits are described with “0” in the attribute (VTSM_SPST_ATR) of the sub-picture of the VTS corresponding to the sub-picture stream of the non-existing VTS.

Attribute (VTS_MU) of multi-channel audio stream of video title set (VTS)
_AST_ATR) describes the attribute information from multi-channel audio stream # 0 to multi-channel audio stream # 7. Each multi-channel audio stream attribute (VTS_MU_AST_
The ATR) describes the contents of the audio channel (karaoke, surround, etc.), the audio mixing method, and the like.

The VTS program chain information table (VTS_PGCIT) 100 shown in FIG.
The structure shown in FIG. This information table (VTS_PGCIT) 100 contains information (VTS_PC) related to the VTS program chain (VTS_PGC).
GCI) is described, and the first item is information (VTS_PGC) in the information table (VTS_PGCIT) 100 regarding the VTS program chain (VTS_PGC).
IT_I) 102 is provided. This information (VTS
_PGCIT_I) 102, the number of VTS program chains (VTS_PGC) (# 1 to #n) in the information table (VTS_PGCIT) 100 is equal to V in the information table (VTS_PGCIT) 100.
VTS_PGCI search pointer (VTS_PGCI) for searching the TS program chain (VTS_PGC)
T_SRP) 103 is provided, and each VTS program chain (VTS_PG) is finally provided by the number (# 1 to #n) corresponding to the VTS program chain (VTS_PGC).
Information (VTS_PGCI) 104 regarding C) is provided.

Information (VTS_PGC) of VTS program chain information table (VTS_PGCIT) 100
The IT_I) 102 has the VTS as shown in FIG.
Number of program chains (VTS_PGC) (VTS_
PGC_Ns) is described as the content, and the end address (VTS_PGCIT_EA) of this table information (VTS_PGCIT_I) 102 is the information table (V
It is described by the relative number of bytes from the first byte of TS_PGCIT) 100.

Further, as shown in FIG. 26, the VTS_PGCIT search pointer (VTS_PGCIT_SRP) 103 has an attribute (VTS_P) of the program chain (VTS_PGC) of the video title set (VTS) 72 as shown in FIG.
GC_CAT) and the VTS_PGC information (VTS_PGCI) in the relative number of bytes from the first byte of the VTS_PGC information table (VTS_PGCIT) 100.
Start address (VTS_PGCI_SA) is described. Here, the VTS_PGC attribute (VTS_P
As an attribute of the GC_CAT, for example, the entry program chain (entry PG) to be reproduced first
Whether or not C) is described. Normally, the entry program chain (PGC) is described before the program chain (PGC) which is not the entry program chain (PGC).

PGC information (VT
In S_PGCI) 104, four items are described as shown in FIG. This PGC information (VTS_PGC
In I) 104, program chain general information (PGC_GI) 105 of an indispensable item is first described, and at least three items 106, 107, and 108 that are indispensable items only after that are described. Has been done. That is, the program chain program map (PGC_PGMAP) 10 is included as the three items.
6, the cell reproduction information table (C_PBIT) 107 and the cell position information table (C_POSIT) 108 are PG
It is described in the C information (VTS_PGCI) 104.

Program chain general information (PGC_G
28. In I) 105, as shown in FIG. 28, the category (PGCI_CAT) of the program chain (PGC), the content (PGC_CNT) of the program chain (PGC), and the playback time (PGC_) of the program chain (PGC).
PB_TIME) is described. The PGC category (PGCI_CAT) describes whether or not the PGC can be copied and whether or not the program in the PGC is continuously reproduced or randomly reproduced. The contents of PGC (PGC_CNT) describe the contents of the structure of this program chain, that is, the number of programs, the number of cells, and the like. Play time of PGC (PGC_P
B_TIME) describes the total playback time of the program in this PGC. This reproduction time describes the reproduction time of the program when the program in the PGC is continuously reproduced regardless of the reproduction procedure.

Further, the general information of the program chain (PG
C_GI) 105 describes PGC sub-picture stream control (PGC_SPST_CTL), PGC audio stream control (PGC_AST_CTL), and PGC sub-picture palette (PGC_SP_PLT). PGC sub-picture stream control (PGC_SPST_
The number of sub-pictures that can be used in PGC is described in CTL), and PGC audio stream control (PGC_AST
Similarly, the number of audio streams that can be used in PGC is described in _CTL). The PGC sub-picture palette (PGC_SP_PLT) describes a set of a predetermined number of color palettes used for all sub-picture streams of this PGC.

Further, PGC general information (PGC_GI) 1
05 contains the PGC program map (PGC_PGMA
P_SA) start address (PGC_PGMAP_
SA_SA), cell playback information table (C_PBIT)
The start address (C_PBIT_SA) 107 and the start address (C_POSIT_SA) of the cell position information table (C_POSIT) 108 are described. Both start addresses (C_PBIT_SA and C_POSIT_SA) are VTS_PGC information (VT
It is described by the relative number of bytes from the first byte of (S_PGCI). Program chain Program map (P
GC_PGMAP) 106 is a PG as shown in FIG.
It is a map which shows the structure of the program in C. This map (PGC_PGMAP) 106 is shown in FIG. 29 and FIG.
As shown in 0, the entry cell number (ECELLN), which is the start cell number of the program, is described in ascending order of cell numbers. Further, program numbers are assigned from 1 in the order of description of the entry cell numbers. Therefore, the first entry cell number of this map (PGC_PGMAP) 106 must be # 1.

Cell reproduction information table (C_PBIT) 1
07 defines the playback order of PGC cells. In this cell reproduction information table (C_PBIT) 107, cell reproduction information (C_PBIT) is continuously described as shown in FIG. Basically, the cells are reproduced in the order of their cell numbers. Cell playback information (C_PB
As shown in FIG. 32, the reproduction information (P_P)
A cell category (C_CAT) is described as BI). In this cell category (C_CAT), a cell block mode indicating whether the cell is a cell in a cell block or the first cell if it is a cell in the cell block, and if the cell is part of the block Cell block type indicating whether there is no or an angle block, or S indicating whether it is necessary to reset the system time clock (STC)
The TC discontinuity flag is described. Here, a cell block is defined as a set of cells at a specific angle. The change of the angle is realized by changing the cell block. That is, taking baseball as an example, changing the angle block that captures a scene from the infield corresponds to changing the angle block that captures a scene from the infield.

Also, this cell category (C_CAT)
Indicates a cell reproduction mode indicating whether the cell is continuously reproduced in the cell or is stopped in units of each video object unit (VOBU) in the cell, whether or not the cell is reproduced after the cell is reproduced, or the stationary time thereof. Cell navigation controls are described.

As shown in FIG. 32, the reproduction information (P_PB) in the cell reproduction information table (C_PBIT) 107 is also used.
I) includes a cell playback time (C_PBTM) describing the total playback time of the PGC. When the angle cell block is in the PGC, the reproduction time of the angle cell number 1 represents the reproduction time of the angle block. Furthermore, the cell reproduction information table (C_PBIT) 10
7, the start address (C_FV) of the first video object unit (VOBU) 85 in the cell is indicated by the number of logical sectors relative to the first logical sector of the video object unit (VOBU) 85 in which the cell is recorded.
OBU_SA) is described, and the start address (VOBU) 85 of the final video object unit (VOBU) 85 in the cell is the number of logical sectors relative to the first logical sector of the video object unit (VOBU) 85 in which the cell is recorded. C_LVOBU_SA) is described.

Cell position information table (C_POSI) 1
08 specifies the identification number (VOB_ID) of the video object (VOB) of the cell used in the PGC and the identification number (C_ID) of the cell. In the cell position information table (C_POSI), as shown in FIG. 33, the cell position information (C_POSI) corresponding to the cell number described in the cell reproduction information table (C_PBIT) 107 is the same as the cell reproduction information table (C_PBIT). They are listed in order. This cell position information (C_POSI) contains the information shown in FIG.
As shown in FIG. 4, the video object unit (V
The identification number (C_VOB_IDN) of the OBU) 85 and the cell identification number (C_IDN) are described.

Cell 84 as described with reference to FIG.
Is a set of video object units (VOBU) 85, and video object unit (VOBU) 8
5 is defined as a pack sequence starting from the navigation (NV) pack 86. Therefore, the start address (C_FVOBU_SA) of the first video object unit (VOBU) 85 in the cell 84 is the NV pack 8
6 represents the start address. As shown in FIG. 35, the NV pack 86 includes a pack header 110, a system header 111, and two packets as navigation data, that is, a reproduction control information (PCI) packet 116 and a data search information (DSI) packet 11.
The number of bytes shown in FIG. 35 is assigned to each part, and one pack is set to 2048 bytes corresponding to one logical sector. The NV pack is placed immediately before the video pack including the first data in the group of pictures (GOP). Even when the object unit 85 does not include the video pack, the NV pack is arranged at the head of the object unit including the audio pack and / or the sub-picture pack. Thus, even when the object unit does not include the video pack, the reproduction time of the object unit is determined based on the unit in which the video is reproduced, as in the case where the object unit includes the video pack.

Here, the GOP is defined by the MPEG standard and is defined as a data string forming a plurality of screens as already described. That is, the GOP corresponds to compressed data, and by decompressing the compressed data, image data of a plurality of frames capable of reproducing a moving image is reproduced. Pack header 110 and system header 111
Is defined by the system layer of MPEG2, pack start code, system clock reference (SCR), and multiplexing rate information are stored in the pack header 110, and bit rate and stream ID are described in the system header 111. ing. Packet headers 112 and 11 of PCI packet 116 and DSI packet 117
Similarly, a packet start code, a packet length, and a stream ID are stored in 4, as defined in the system layer of MPEG2.

Other video, audio, sub-picture pack 8
8, 90, and 91 are the same as those specified in the MPEG2 system layer, as shown in FIG.
0, a packet header 121, and a packet 122 storing corresponding data, and the pack length is 2
It is set to 048 bytes. Each of these packs
It is aligned with the boundaries of logical blocks.

The PCI data (P
The CI) 113 is navigation data for changing the presentation, that is, the display content, in synchronization with the reproduction state of the video data in the VOB unit (VOBU) 85. That is, in the PCI data (PCI) 113, PCI general information (PCI_GI) as information of the entire PCI and angle information (N as each jump destination angle information at the time of changing the angle) as shown in FIG.
SMLS_ANGLI) is described. In the PCI general information (PCI_GI), as shown in FIG.
The address (NV_PCK_LBN) of the NV pack (NV_PCK) 86 in which the PCI 113 is recorded is described by the number of relative logical blocks from the logical sector of the VOBU 85 in which the CI 113 is recorded. Also, P
The CI general information (PCI_GI) describes a category (VOBU_CAT) of VOBU85, a start reproduction time (VOBU_S_PTM) and a reproduction end time (VOBU_EPTM) of VOBU85. Where V
Start PTS of OBU85 (VOBU_SPTS)
Indicates the reproduction start time (start presentation time) of the video data in the VOBU 85 including the PCI 113. This playback start time is VOBU
It is the first playback start time in 85. Usually, the first picture is an I picture (In
It corresponds to the playback start time of (tra-Picture). VOBU85
End PTS (VOBU_EPTS) is the PCI1
13 shows the reproduction end time (end presentation time) of the VOBU 85 including 13 items. The DSI data (DSI) 11 of the DSI packet 117 shown in FIG.
Reference numeral 5 is navigation data for executing a search for the VOB unit (VOBU) 85. As shown in FIG. 39, the DSI data (DSI) 115 includes DSI general information (DSI_GI) and seamless reproduction information (SML_).
PBI), angle information (SML_AGLI), navigation pack address information (NV_PCK_AD)
I) and synchronous reproduction information (SYNCI) are described.

The DSI general information (DSI_GI) describes the information of the entire DSI data 115. That is, as shown in FIG. 40, DSI general information (DSI_G
In I), the system time reference reference value (NV_PCK_SCR) of the NV pack 86 is described. This system time reference reference value (NV_PCK_SCR) is shown in FIG.
Are stored in a system time clock (STC) incorporated in each unit shown in FIG. The sound is reproduced on the monitor unit 6 and the speaker unit 8. The DSI general information (DSI_GI) includes DSI11.
The NV pack (NV_PC) in which the DSI 115 is recorded with the relative logical sector number (RLSN) from the first logical sector of the VOB set (VOBS) 82 in which 5 is recorded.
K) 86 start address (NV_PCK_LBN)
, And the relative logical sector number (RLSN) from the first logical sector of the VOB unit (VOBU) is DSI1.
VOB unit (VOBU) 85 in which 15 is recorded
The address (VOBU_EA) of the final pack therein is described.

Furthermore, in the DSI general information (DSI_GI), the VOB unit (V
V pack (V_PC) in which the last address of the first I picture in this VOBU is recorded with the relative logical sector number (RLSN) from the first logical sector of OBU).
K) VOBU8 in which the end address (VOBU_IP_EA) of 88 is recorded and the DSI 115 is recorded.
3 identification number (VOBU_IP_IDN) and the DS
Identification number of cell in which I115 is recorded (VOBU_
C_IDN) is described.

In the navigation pack address information of DSI, addresses of a predetermined number of navigation packs are described. Video fast-forwarding or the like is executed with reference to this address. In addition, the synchronization information (SYNCI)
Address information of sub-picture and audio data to be reproduced in synchronization with the reproduction start time of the video data of the VOB unit (VOBU) including the DSI 115 is described. That is, as shown in FIG. 41, the target audio pack (A) is determined by the relative logical sector number (RLSN) from the NV pack (NV_PCK) 86 in which the DSI 115 is recorded.
_PCK) 91 start address (A_SYNCA)
Is described. Multiple audio streams (up to 8)
In some cases, synchronization information (SYNCI) is described by that number. Also, the VO including the target audio pack (SP_PCK) 91 in the synchronization information (SYNCI).
NV pack (NV_PC) of B unit (VOBU) 85
K) 86 address (SP_SYNCA) is DSI11
5 is described as the relative logical sector number (RLSN) from the NV pack (NV_PCK) 86 in which 5 is recorded. When there are a plurality of sub-picture streams (maximum 32), synchronization information (SYNCI) is described by that number.

Next, the above-mentioned video data attribute (VMG
_V_ATR, VTSM_V_ATR, VTS_V_A
TR), audio data attribute (VMG_AST_AT
R, VTSM_AST_ATR, VTS_AST_A
TR), sub-picture data attribute (VMG_SPST_AT
R, VTSM_SPST_ATR, VTS_SPST_
A circuit configuration in which the video decoder section 58, the audio decoder section 60, the sub-picture decoder section 62, and the D / A & reproduction processing section 64 can be appropriately set according to the ATR) will be described below.

As shown in FIG. 42, the video decoder section 58 is composed of a register 58A, a selector 58B, an MPEG1 decoder 58C, and an MPEG2 decoder 58D. In the circuit shown in FIG. 42, the video data attribute (VMGM_V_ATR, V supplied from the system CPU unit 50 via the system processor unit 54).
A control signal corresponding to TSM_V_ATR, VTS_V_ATR) is held in the register 58A, and its output is output to the selector 58B. The selector 58B receives the video data supplied from the system processor 54 from the MPEG1 decoder 5 according to the output from the register 58A.
8C or output to the MPEG2 decoder 58D selectively. When the MPEG1 decoder 58C is selected, the video data from the selector 58B is MPEG
The data is supplied to the 1-decoder 58C and the video data is decoded by the MPEG1 encoding method. When the MPEG2 decoder 58D is selected, the video data from the selector 58B is supplied to the MPEG2 decoder 58D, and the video data is decoded by the MPEG2 decoder 58D by the MPEG2 encoding method. The decoder output from the MPEG1 decoder 58C or the MPEG2 decoder 58D is output as a decoder output of the video decoder unit 58 to a video reproduction processing unit 201, which will be described later, in the D / A & reproduction processing unit 64.

As shown in FIG. 43, the audio decoder section 60 includes a register 60A, a selector 60B and an MPEG1.
It is composed of a decoder 60C, an AC3 decoder 60D, and a PCM decoder 60E. In the circuit shown in FIG. 43, the audio data attributes (VMGM_AST_ATR, VTSM_AST_AT) supplied from the system CPU section 50 via the system processor section 54.
A control signal corresponding to R, VTS_AST_ATR) is held by the register 60A, and its output is the selector 6
It is output to 0B. The selector 60B receives the audio data supplied from the system processor unit 54 from the MPEG1 decoder 60C according to the output from the register 60A,
AC3 decoder 60D or PCM decoder 60E
Are selectively output to. When the MPEG1 decoder 60C is selected, the audio data from the selector 60B is decoded by the MPEG1 decoder 60C in the MPEG1 encoding system. When the AC3 decoder 60D is selected, the audio data from the selector 60B is decoded by the AC3 decoder 60D by the AC3 encoding method. When the PCM decoder 60E is selected, the digital audio data from the selector 60B is decoded by the PCM decoder 60E into analog audio data. MPEG1 decoder 60C, AC3 decoder 60D, or PCM
The decoder output from the decoder 60E is used as a decoder output of the audio decoder unit 60, and the D / A & reproduction processing unit 6
4 is output to an audio reproduction processing unit 202 described later.

As shown in FIG. 44, the sub-picture decoder section 62 is composed of a register 62A, a selector 62B, a bit map decoder 62C, and a run length decoder 62D. In the circuit shown in FIG. 44, the sub-picture data attribute (VMGM_SPST_) supplied from the system CPU section 50 via the system processor section 54.
ATR, VTSM_SPST_ATR, VTS_SPS
The control signal corresponding to (T_ATR) is held by the register 62A, and its output is output to the selector 62B. The selector 62B selectively outputs the sub-picture data supplied from the system processor unit 54 to the bitmap decoder 62C or the run length decoder 62D according to the output from the register 62A. When the bitmap decoder 62C is selected, the selector 62
When the sub-picture data from B is decoded by the bit map decoder 62C by the bit map encoding method and the run-length decoder 62D is selected, the sub-picture data from the selector 62B is run-length decoder 6
It is decoded by 2D using the run-length coding method.

As shown in FIG. 1, the D / A & reproduction processing section 64 has a video reproduction processing section 201, an audio reproduction processing section 202, an audio mixing section 203, and a sub-picture reproduction processing section 207. The video reproduction processing unit 201
As shown in FIG. 45, a letterbox converter 204 having an internal memory, converts color difference signals of NTSC video data into color difference signals of PAL video data, or converts color difference signals of PAL video data into NTSC.
It is composed of a digital / NTSC / PAL converter 205 having a video formatter function for converting a color difference signal of standard video data and a D / A converter 206 for converting a digital video signal into an analog video signal.
The letterbox converter 204 is a system CPU unit 50.
From the video data attributes (VMGM_SPST_ATR, VTSM)
Depending on the control signal corresponding to the display mode (bit numbers b9, b8) of _SPST_ATR, VTS_SPST_ATR), the video data supplied from the video decoder unit 58 may be converted to letterbox, or may not be converted to letterbox. Output. In this letterbox conversion process, if the conversion is allowed (the display mode bit numbers b9 and b8 are "00" or "10"),
As described with reference to FIG. 9, the video data having the aspect ratio of 9/16 is converted so that all the data can be displayed on the monitor unit 6 having the aspect ratio of 3/4. When displayed on the monitor unit 6, a black portion at the upper limit of the image is formed, so that it is called a letter box. Digital / NTSC / PA
The L converter 205 is supplied with video data attributes (VMGM_SPST_ATR, VTSM_SPST_) from the system CPU unit 50 via the system processor unit 54.
According to the control signal corresponding to the frame rate (bit numbers b13, b12) of ATR, VTS_SPST_ATR, the video data from the letterbox converter 204 is converted into the NTSC format and then into the PAL format. This digital NTSC / PAL
The output from the converter 205 is converted into analog data by the D / A converter 206 and then output to the monitor unit 6.

As shown in FIG. 46, the audio reproduction processing section 202 is composed of a register 202A, a selector 202B, a stereo output section 202C, a monaural output section 202D, and a surround output section 202E. In the circuit shown in FIG. 46, the audio data attributes (VMGM_SPST_ATR, VTSM_SP) supplied from the system CPU unit 50 via the system processor unit 54.
A control signal corresponding to ST_ATR, VTS_SPST_ATR) is held in the register 202A, and its output is output to the selector 202B. The selector 202B selectively outputs the audio data supplied from the audio decoder unit 60 to the stereo output unit 202C, the monaural output unit 202D, or the surround output unit 202E according to the output from the register 202A. When the stereo output unit 202C is selected, the selector 202B
The audio data from is converted into stereo data. When the monaural output unit 202D is selected, the audio data from the selector 202B is converted into monaural data. When the surround output unit 202E is selected, the audio data from the selector 202B is converted into surround data. The output from the stereo output unit 202C, the monaural output unit 202D, or the surround output unit 202E, that is, the output of the audio reproduction processing unit 202 is directly output to the speaker unit 8 or
It is output to the speaker unit via the audio mixing unit 203.

When the audio data is multi-channel audio data, the output of the reproduction processing unit 202 is output from the speaker unit via the audio mixing unit 203. The audio mixing unit 203 is shown in FIG.
7, register 203A, register 203
B, selector 203C, first stream processing unit 203
D, a second stream processing unit 203E, and a mixing processing unit 203F. In the circuit shown in FIG. 47, the registers 203A and 203B have system C
The multi-channel audio stream attribute (VTS_MU_AST_AT) described in VTSI_MAT supplied from the PU unit 50 via the system processor unit 54.
The control signal corresponding to R) is held in the register 203A.
Is output to the selector 203C, and the register 203
The output of B is output to the mixing processing unit 203F.
The selector 203C selectively outputs the audio data supplied from the audio reproduction processing unit 202 to the first stream processing unit 203D or the second stream processing unit 203E according to the output from the register 203A. When the first stream processing unit 203D is selected, the audio data from the selector 203C is converted into the first stream data by the first stream processing unit 203D. When the second stream processing unit 203E is selected, the audio data from the selector 203C is converted into the second stream data by the second stream processing unit 203E. First stream processing unit 2
03D or the output from the second stream processing unit 203E is output to the mixing processing unit 203F. The mixing processing unit 203F executes mixing processing according to the output from the register 203A, and the mixed data is output to the speaker 8 or the like as an output from the audio mixing unit 203.

Next, referring again to FIG. 1, FIG. 4 to FIG.
The reproduction operation of movie data from the optical disc 10 having the logical format shown in FIG. In FIG. 1, solid arrows between blocks indicate data buses,
The dashed arrow indicates the control bus.

In the optical disk device shown in FIG. 1, when the power is turned on and the optical disk 10 is loaded,
System ROM and RAM 52 to system CPU
The unit 50 reads the initial operation program and operates the disk drive unit 30. Therefore, the disk drive unit 30 starts the read operation from the lead-in area 27, and the volume and file structure area 70 that follows the lead-in area 27 and defines the volume and file structure in accordance with ISO-9660 or the like is read. . That is, the system CPU unit 50 gives a read command to the disk drive unit 30 in order to read the volume and file structure area 70 recorded at the predetermined position of the disk 10 set in the disk drive unit 30, and the volume and file are read. The contents of the structure area 70 are read out and temporarily stored in the data RAM section 56 via the system processor section 54. The system CPU section 50 has a data RAM section 56.
Information such as the recording position and recording capacity of each file and other management information is extracted through the path table and directory records stored in
It is transferred to a predetermined location of the system ROM & RAM section 52 and stored.

Next, the system CPU section 50 refers to the information on the recording position and recording capacity of each file from the system ROM & RAM section 52 to obtain the video manager 71 consisting of a plurality of files starting from the file number 0. That is, the system CPU unit 50 is a system ROM
Also, a read command is given to the disk drive unit 30 by referring to the information on the recording position and the recording capacity of each file acquired from the RAM unit 52, and the positions of a plurality of files forming the video manager 71 existing on the root directory and The size is acquired, the video manager 71 is read out, and is stored in the data RAM unit 56 via the system processor unit 54.

The video manager information management table (VMGI_MAT) 78, which is the first table of the video manager 71, is searched. By this search, the video object set (VMGM_VOBS) for the video manager menu (VMGM) 7
The start address of 6 (VMGM_VOBS_SA) is acquired, and the video object set (VMGM_VOB) is acquired.
S) 76 is reproduced. Regarding the reproduction of the video object set (VMGM_VOBS) 76 for this menu, the video object set (VTSM_VOBS) for the title in the video title set (VTS)
The reproduction procedure is omitted because it is the same as. When the language is set in this video object set (VMGM_VOBS) 76, or when there is no video manager menu (VMGM), the video manager information management table (VMGI_MAT) is searched and the title set search pointer table (TT_SRPT).
The starting address of 79, (TT_SRPT_SA), is searched. Here, when reproducing the video manager menu, the system CPU unit 50 causes the information management table (VMGI__) of the video manager (VMGI) 75.
MAT) 78, the number of video, audio, and sub-picture streams for the volume menu described in MAT) 78 and the respective attribute information are acquired, and based on the attribute information, each video decoder section 58, audio decoder section 60, and sub-picture decoder. Parameters for video manager menu playback are set in the section 62.

By this search, the title set search pointer table (TT_SRPT) 79 is transferred to and stored in a predetermined location of the system ROM & RAM section 52. Next, the system CPU section 50 acquires the final address of the title search pointer table (TT_SRPT) 79 from the title search pointer table information (TSPTI) 92, and at the same time the title search pointer corresponding to the input number from the key operation / display section 4. (TT_SR
P) 93 to video title set number (VTSN) corresponding to the input number, program chain number (PGC
N) and the start address of the video title set (V
TS_SA) is acquired. If there is only one title set, one title search pointer (TT_SR) regardless of whether or not there is an input number from the key operation / display unit 4.
P) 93 is searched for the start address (VTS_SA) of the title set. From the start address (VTS_SA) of this title set, the system CPU unit 50 acquires the target title set.

Next, from the start address (VTS_SA) of the video title set 72 shown in FIG. 15, the video title set information (VTSI) 94 of that title set is obtained as shown in FIG. From the video title set information management table (VTSI_MAT) 98 of this video title set information (VTSI) 94 to FIG.
Video title set information management table (VT
SI_MAT) 98 end address (VTI_MAT_
EA) is acquired. Also, the number of streams of audio and sub-picture data (VTS_AST_Ns, VTS_S
PST_Ns) and attribute information (VTS_V_ATR, VTS_A_AT) of video, audio and sub-picture data
R, VTS_SPST_ATR), each unit of the reproducing apparatus shown in FIG. 1 is set according to its attribute. For the settings of each part of the playback device according to this attribute information,
More details will be described later.

When the menu (VTSM) for the video title set (VTS) has a simple structure, the menu for the video title set is selected from the video title set information management table (VTSI_MAT) 98 shown in FIG. Video object set (VTSM_
VOB) 95 start address (VTSM_VOB_
SA) is acquired and its video object set (V
TSM_VOB) 95 displays a menu of video title sets. With reference to this menu, the video object set (VTT_VOBS) 96 for the title (VTST) in the title set (VTS) is simply selected without selecting the program chain (PGC).
22 is reproduced, the video object set 96 is reproduced from the start address (VTSTT_VOB_SA) shown in FIG.

When the program chain (PGC) is designated by the key operation / display section 4, the target program chain is searched by the following procedure. This program chain search is not limited to the program chain for the title in the video title set, and the same procedure is used for searching the program chain for the relatively complicated menu in which the menu is composed of the program chain. Is adopted. Management table of video title set information (VTSI) 94 (V
TSI_MAT) 98, the start address of the program chain information table (VTS_PGCIT) 100 in the video title set (VTS) shown in FIG.
102 is read. This information (VTS_PGCIT
_I) 102, the number of program chains (VTS_PGC_Ns) and the end address (VTS_PGCIT_EA) of the table 100 shown in FIG. 25 are acquired.

When the program chain number is designated on the key operation / display unit 4, the VTS_PGCIT search pointer (VTS_PGC) shown in FIG. 24 corresponding to the number is designated.
IT_SRP) 103 to its program chain category shown in FIG. 26 and its search pointer (VTS)
_PGCIT_SRP) 103 corresponding VTS_PG
The start address of the C information 104 is acquired. This start address (VTS_PGCI_SA) causes the program chain general information (PGC_G) shown in FIG.
I) is read. The program chain (PGC) category and playback time (PGC_CAT, PGC_PB_TIME) according to this general information (PGC_GI)
Etc. are acquired, and the start addresses (C_PBIT_SA, C_POSIT_SA) of the cell reproduction information table (C_PBIT) and cell position information table (C_POSIT) 108 described in the general information (PGC_GI) are acquired. Start address (C_PBIT_SA)
From the cell position information (C_POSI) shown in FIG. 33 to the video object identifier (C_POSI) shown in FIG.
VOB_IDN) and cell identification number (C_IDN) are obtained.

The start address (C_POSIT
_SA) to cell reproduction information (C_PBI) shown in FIG. 31.
3 described in the reproduction information (C_PBI)
The start address (C_FVOBU_SA) of the first VOBU 85 and the start address (C_LVOBU_SA) of the last VOBU in the cell shown in 2 are acquired and the target cell is searched. The playback order of cells is
The PGC program map (PGC_P shown in FIG.
The reproduction cell 84 is determined one after another with reference to the map of the program shown in FIG. The data cells 84 of the program chain thus determined are successively read from the video object 144 and input to the data RAM section 56 via the system processor section 54. The data cell 84 is supplied to the video decoder section 58, the audio decoder section 60, and the sub-picture decoder section 62 based on the reproduction time information and decoded, and the D / A
The signal is converted by the reproduction processing unit 64, the image is reproduced on the monitor unit 6, and the sound is reproduced from the speaker units 8 and 9.

Next, regarding the acquisition of the video data attribute information (VTS_V_ATR) and the setting processing of the video decoder and the video reproduction processing unit 201 according to this attribute information (VTS_V_ATR) in this optical disk reproducing apparatus, refer to the flowchart shown in FIG. And explain.
When the setting process is started, the system CPU unit 50 controls the disc drive unit 30 to read the video title set information management table (VTSI_MAT) 98 from the optical disc 10 and temporarily store it in the data RAM unit 56. As shown in step S0, the video title set information management table (V
The system CPU unit 50 acquires the video data attribute (VTS_V_ATR) recorded in the TSI_MAT) 98. This acquired video data attribute (VTS_V_A
Whether TR) is newly acquired or a new video data attribute (VTS_V_ATR) different from the already acquired video data attribute (VTS_V_ATR) is confirmed in step S1. Video data attribute (VTS_V
If _ATR) is not acquired, step S0 is performed again.
To the new video data attribute (VTS_V_AT
R) has already acquired the video data attribute (VTS_
V_ATR), the process ends. When a new video data attribute (VTS_V_ATR) is acquired, the system CPU unit 50 acquires the acquired video data attribute (VTS as shown in step S2.
Video compression mode described in _V_ATR) is MPE
Determine whether it complies with G1 or MPEG2,
A control signal according to this determination result is output to the register 58A of the video decoder unit 58 shown in FIG. As a result, the selector 58B is switched according to the control signal supplied to the register 58A. That is, as shown in step S3, when the video compression mode 131 complies with MPEG1, the video data from the system processor unit 54 is sent to the MPEG1 decoder 5 via the selector 58B.
8C and is decoded in the MPEG1 mode. If the video compression mode 131 conforms to MPEG2 as shown in step S4, the video data from the system processor unit 54 is supplied to the MPEG2 decoder 58D via the selector 58B, and the MPEG2 decoder 58D is supplied.
Decoded in the mode.

Further, the system CPU section 50 acquires the video data attribute (VTS__) obtained in step S5.
V_ATR) frame rate (bit numbers b13, b
It is determined whether the frame rate described in 12) complies with the NTSC system (frame rate 29.97 / s) or the PAL system (frame rate 25 / s). Control signal according to D /
Output to the digital / NTSC / PAL converter 205 in the video reproduction processing unit 201 of the A & reproduction processing unit 64. If it conforms to the NTSC system (frame rate 29.97 / s), that is, if the bit numbers b13 and b12 that describe the frame rate are "00", the video data is not recorded as shown in step S6. , Digital / N
The TSC / PAL converter 205 converts the video signal into an NTSC video signal. Further, in the case of conforming to the PAL system (frame rate 25 / s), that is, the bit numbers b13 and b12 describing the frame rate are “0”.
In the case of 1 ″, the video data is converted into a PAL system video signal by the digital NTSC / PAL converter 205 as shown in step S7.

Further, the system CPU section 50 acquires the video data attribute (VTS__) acquired in step S8.
It is determined whether the display aspect ratio described in (V_ATR) is 3/4 or 9/16. This judgment result is 3
/ 4, that is, when the bit numbers b11 and b10 describing the display aspect ratio are “00”,
The system CPU unit 50 sends a control signal for prohibiting the conversion processing to the letterbox to the video reproduction processing unit 2 in the D / A & reproduction processing unit 64 via the system processor unit 54.
01 to the letterbox converter 204. As a result, the letterbox conversion processing by the letterbox converter 204 is prohibited as shown in step S9. Further, the system CPU unit 50 sends an M signal in the video decoder unit 58 to the control signal indicating the inhibition of the pan scan process via the system processor unit 54 as shown in step S10.
It is output to the PEG2 decoder 58d. This allows MP
Pan scan processing by the EG2 decoder 58d is prohibited.

Further, the determination result in step 8 is 9 /
When it is 16, that is, when the bit numbers b11 and b10 describing the display aspect ratio are “11”,
The system CPU unit 50 determines that the display aspect ratio designated by the user is 9/1 as shown in step S11.
It is determined whether it is 6. If this determination result is 9/16, the process proceeds to step 9 already described. When the display aspect ratio specified by the user is 3/4, the system CPU unit 50 uses the pan scan method for the display conversion specified by the user on the key operation unit and the display unit 4, as shown in step S12. Determine.
If the result of this determination is not pan-scan display conversion, the system CPU section 50 sends a control signal indicating letterbox conversion processing to the video in the D / A & reproduction processing section 64 via the system processor section 54, as shown in step 13. Letterbox converter 2 in playback processor 201
Output to 04. This allows letterbox converter 2
Letterbox conversion processing by 04 is set. Further, the system CPU unit 50 sends an M signal in the video decoder unit 58 via the system processor unit 54 to the control signal indicating the inhibition of the pan scan process as shown in step S14.
It is output to the PEG2 decoder 58d. This allows MP
Pan scan processing by the EG2 decoder 58d is prohibited.

If the result of the determination in step 12 is the pan-scan display conversion, the system CP
The U unit 50 determines whether the pan scan 134 described in the acquired video data attribute (VTS_V_ATR) is permitted or prohibited as shown in step S15. If the determination result is permission, the system CPU unit 50 sends a control signal indicating prohibition of the letterbox conversion processing to the letterbox of the video reproduction processing unit 201 in the D / A & reproduction processing unit 64 via the system processor unit 54. Converter 20
4 is output. As a result, the letterbox conversion processing by the letterbox converter 204 is prohibited as shown in step S16. In addition, the system CPU unit 50
As shown in step S17, a control signal indicating permission of the pan scan process is output to the MPEG2 decoder 58d in the video decoder unit 58 via the system processor unit 54. As a result, the pan scan process by the MPEG2 decoder 58d is set.

If the determination result in the above step 15 is prohibition, the system CPU section 50 determines in step S
As shown in FIG. 18, the fact that pan scan is prohibited is displayed on the key operation unit and the display unit 4, or is displayed by an indicator to inform the user. Further, the system CPU unit 50, after performing this display or notification,
The process moves to step 9 above.

In the flow of FIG. 48, when the video decoder 58 and the video reproduction processing unit 201 are set according to the video data attribute information (VMGM_V_ATR), the video title set information management table (VTS
The video management information management table (VMGI_MAT) 78 is read instead of the I_MAT) 98 and the video data attribute information (VMG_V_ATR) is acquired. Also,
In the flow of FIG. 48, video data attribute information (VT
When the video decoder 58 and the video reproduction processing unit 201 are set according to (SM_V_ATR), the video title set information management table (VTSI_MAT) is set similarly to the video data attribute information (VTS_V_ATR).
98 to video data attribute information (VTSM_V_AT
R) is acquired.

Next, with reference to the flowchart shown in FIG. 49, regarding the acquisition of the audio data attribute (VTS_AST_ATR) and the setting process of the video decoder and the video reproduction processing unit 201 according to this attribute information (VTS_AST_ATR) in this optical disk reproducing apparatus. Explain. When the setting process is started, the system CPU unit 50 causes the disk drive unit 30 to operate as shown in step 20.
The video title set information management table (VTSI_MAT) 98 is read from the optical disc 10 and temporarily stored in the data RAM section 56. Step 21
The video title set information management table (VTSI_MAT) 9 stored in the data RAM section 56 as shown in FIG.
8 System CPU counts the number of recorded audio streams
The part 50 acquires. When the user selects a selectable audio stream number by the key operation and the operation of the processing section 4 as shown in step 32, the video title set information management table (VTSI_MAT) stored in the data RAM section 56 as shown in step 22. The system CPU unit 50 acquires the audio attribute (VTS_AST_ATR) corresponding to the stream number designated by the user from the audio data attribute group (VTS_AST_ATR) of 98. The system CPU unit 50 acquires the audio data attribute (VTS_AS) acquired as shown in step 23.
The audio compression mode described in (T_ATR) is M
It is determined which of PEG1 and linear PCM is compliant, and a control signal corresponding to the determination result is output to the register 60A of the audio decoder unit 60.

As a result, the selector 60B is switched according to the control signal supplied to the register 60A, and when the audio coding mode conforms to MPEG1, the audio data from the system processor section 54 is sent via the selector 60B. If the audio coding mode is supplied to the MPEG1 decoder 60C and the audio coding mode is AC3 compliant, the audio data from the system processor unit 54 is supplied to the AC3 decoder 60D via the selector 60B, and the video coding mode is digital PCM compliant. If so, the audio data from the system processor unit 54 is sent to the PCM decoder 60 via the selector 60B.
Supplied to E.

The system CPU section 50 also acquires the audio data attribute (VT
S_AST_ATR) determines whether the audio mode 152 described is stereo, monaural, or surround, and outputs a control signal according to the determination result to the register 202A in the audio reproduction processing unit 202. As a result, the selector 202B is switched according to the control signal supplied to the register 202A, and when the audio mode 152 is stereo, the audio data from the audio decoder unit 60 is supplied to the stereo output unit 202C via the selector 202B, When the audio mode 152 is monaural, the audio decoder unit 60
Is supplied to the monaural output unit 202D via the selector 202B, and the audio mode 1
When 52 is surround, the audio data from the audio decoder unit 60 is supplied to the surround output unit 202E via the selector 202B.

Next, the system CPU section 50 acquires the audio data attribute 125 obtained in step 25.
Whether the mixing mode described in is impossible to mix, is a master stream that can be mixed,
It is determined whether the slave stream can be mixed, and a control signal according to the determination result is output to the registers 203A and 203B of the audio mixing unit 203. As a result, the selector 203C is switched according to the control signal supplied to the register 203A, and step 2
In the case of the master stream that can be mixed as shown in 5, the stream is supplied to the first stream processing unit 203D as the first stream as shown in step 26, and in the case of the slave stream that can be mixed as shown in step 27, As shown in step 28, the stream is supplied to the second stream processing unit 203E as the second stream, and in the case of an independent stream that cannot be mixed, the stream is first stream as the first stream.
It is supplied to the stream processing unit 203D. When the processing of the mixing processing unit 203F is switched according to the control signal supplied to the register 203B and mixing is possible, the first stream of the first stream processing unit 203D and the second stream of the second stream processing unit 203E are processed. When mixing processing is performed and the result is output to the speaker unit 8 and mixing is not possible, the first stream processing unit 203D
Only the first stream of is output to the speaker unit 8.

The system CPU section 50 also acquires the audio data attribute 125 acquired in step 30.
It is determined whether or not the audio type 153 described in is a language. If the determination result is a language, the language code is acquired from the language code 156, and the system ROM is used.
& From the language code table stored in the RAM section 52 in advance,
The corresponding language name is determined, and as shown in step 31, the monitor unit 6 or the like makes an indication.

On the contrary, when the language code is designated by the user, the audio stream having the desired language code can be specified from the audio stream number 124 and the audio data attribute 125.

Further, when there is an instruction to switch the audio stream number due to a user event or the like during the data reproduction (S32), the acquisition and setting of the audio data attribute is performed by the processing from S22 to S31.

Through the above series of processing, the audio decoder unit 60, the audio reproduction processing unit 202 and the audio mixing unit 203 are optimally set for the video data of the title set to be reproduced.
In the flow of FIG. 49, the audio data attribute (VM
When the video decoder 58 and the video reproduction processing unit 201 are set according to GM_AST_ATR), the video title set information management table (VTSI_MA) is set.
T) 98 in place of the video management information management table (VMG
I_MAT) 78 is read and the audio data attribute (VMG_AST_ATR) is acquired. Also, FIG.
In the flow of 8, the audio data attribute (VTSM
Audio decoder unit 60 according to _AST_ATR)
And the audio reproduction processing unit 202 is set, the audio data attribute (VTSM_AST_AT
Similarly to R), the audio data attribute (VTSM_AST_ATR) is acquired from the video title set information management table (VTSI_MAT) 98.

Next, FIG. 48 is a flowchart showing the acquisition of sub-picture attribute information (VTS_AST_ATR) and the setting processing of the sub-picture decoder 62 and the video reproduction processing unit 201 according to this attribute information (VTS_SPST_ATR) in this optical disk reproducing apparatus. Will be described with reference to. As shown in step 40, the system CPU section 50
Controls the disc drive unit 30 to read out the video title set information management table (VTSI_MAT) 98 from the optical disc 10, and once the data RAM unit 56 is read.
Store to. As shown in step 41, the system CPU unit 50 determines the number of sub-picture streams (VTS_SPST_Ns) recorded in the video title set information management table (VTSI_MAT) stored in the data RAM unit 56.
To get. When the user designates a sub-picture stream number selectable by the key operation and the operation of the processing section 4 as shown in step 46, the video title set information management table (VTSI_MAT) stored in the data RAM section 56 as shown in step 42. ) Corresponding to the channel number specified by the user from the sub-picture data attribute (VTS_AST_ATR) recorded in () (VTS_AST_ATR)
Is acquired by the system CPU unit 50. The system CPU unit 50 determines whether the sub-picture compression mode described in the acquired sub-picture data attribute (VTS_AST_ATR) is Raw (corresponding to bitmap), run length or other, as shown in step 43, The control signal corresponding to the result of this determination is sent to the register 62 of the sub-picture decoder unit 62.
Output to A. As a result, the selector 62B is switched according to the control signal supplied to the register 62A, and when the sub-picture compression mode corresponds to the bitmap, the sub-picture data from the system processor unit 54 is the selector 6
Is supplied to the bitmap decoder 62C via 2B,
If the sub-picture compression mode supports run length,
The sub-picture data from the system processor unit 54 is supplied to the run length decoder 62D via the selector 62B.

Further, the system CPU section 50 determines whether or not the sub-picture type 172 described in the sub-picture data attribute 127 acquired as shown in step 44 is a language, and the result of this judgment is a language. In some cases, as shown in step 45, the language code is acquired from the language code, the corresponding language name is determined from the language code table stored in advance in the system ROM & RAM section 52, and the monitor section 6 or the like makes an indication. .

Here, when the language code is specified by the user, the sub-picture stream having the target language code can be specified from the number of sub-picture streams and the sub-picture data attribute 127. Further, as shown in step 46, when there is an instruction to switch the sub-picture stream number due to a user event or the like during the data reproduction, the sub-picture data attribute acquisition setting is executed by the processing of steps S42 to S45.

Through the above series of processing, the sub-picture decoder section 62 and the sub-picture reproduction processing section 207 are optimally set for the video data of the title set to be reproduced. In the flow of FIG. 49, the sub-picture attribute (V
When the sub-picture decoder unit 62 and the sub-picture reproduction processing unit 207 are set according to MGM_SPST_ATR), the video title set information management table (VTSI).
_MAT) 98, the video management information management table (VMGI_MAT) 78 is read and the sub-picture attribute (VMGM_SPST_ATR) is acquired. Also,
In the flow of FIG. 48, the sub-picture attribute (VTSM_SP
ST_ATR), when the audio decoder unit 60 and the audio reproduction processing unit 202 are set,
Similar to the sub-picture attribute attribute (VTS_SPST_ATR), the video title set information management table (VTSI_M
AT) 98 to sub-picture attribute attribute (VTSM_SPST_
ATR) is acquired.

Next, referring to FIGS. 51 to 53, video data in the logical format shown in FIGS. 4 to 41 and a recording method on the optical disc 10 for reproducing the video data and the recording method are applied. The recording system will be described.

FIG. 51 shows an encoder system for generating a video file 88 of a title set 84 in which video data is encoded. In the system shown in FIG. 51, as sources of main video data, audio data, and sub video data, for example, a video tape recorder (VTR) 201, an audio tape recorder (ATR) 202, and a sub video player (Subpictu).
re source) 203 is adopted. They are,
Under the control of the system controller (Syscon) 205, main image data, audio data, and sub-image data are generated, and these are respectively generated by the video encoder (VENC) 2.
06, an audio encoder (AENC) 207 and a sub-picture encoder (SPENC) 208, and under the control of a system controller (Syscon) 205, these encoders 206, 207 and 208 perform A / D.
The main video data, the audio data, and the sub-video data (Comp Video, Comp Audio) that have been converted and encoded by the respective compression methods are encoded.
Memory 21 as io, Comp Sub-pict)
0, 211, and 212 are stored.

The main video data, audio data, and sub video data (Comp Video, Comp Au)
Dio and Comp Sub-pict are output to the file formatter (FFMT) 214 by the system controller (Syscon) 205 and converted into the file structure of the video data of this system as described above, and the setting conditions of each data and Management information such as attributes is stored as a file in the system controller (Sysc
on) 205 and stored in the memory 216.

A system controller (Syscon) 205 for creating a file from video data will be described below.
A standard flow of the encoding process in is explained.

The main video data and the audio data are encoded according to the flow shown in FIG. 52 to encode the main video data and the audio data (Comp Video).
o, Comp Audio) data is created. That is, when the encoding process is started, parameters required for encoding the main video data and audio data are set as shown in step 70 of FIG.
Some of the set parameters are stored in the system controller (Syscon) 205 and used by the file formatter (FFMT) 214. As shown in step S271, the main video data is pre-encoded using the parameters, and the optimal distribution of the code amount is calculated. As shown in step S272, the main video is encoded based on the code amount distribution obtained by the pre-encoding. At this time, audio data encoding is also executed at the same time. If necessary as shown in step S273, the main video data is partially re-encoded to replace the re-encoded main video data. Main video data and audio data are encoded by this series of steps. Also, as shown in steps S274 and S275, the sub-picture data is encoded and encoded sub-picture data (Co
mp Sub-pict) is created. That is, the parameters necessary for encoding the sub-picture data are similarly set. Some of the parameters set as shown in step S274 are set in the system controller (Sy
Scon) 205 and is used by a file formatter (FFMT) 214. The sub-picture data is encoded based on this parameter. By this processing, the sub-picture data is encoded.

According to the flow shown in FIG. 53, encoded main video data, audio data, and sub video data (Comp Video, Comp Audio, C) are encoded.
Omp Sub-pict) are combined and converted into the title set structure of the video data as described with reference to FIGS. 4 and 21. That is, as shown in step S276, a cell is set as the minimum unit of video data, and cell reproduction information (C_PBI) regarding the cell is created. Next, as shown in step S277, the configuration of cells constituting the program chain, main video, sub-video, audio attributes, etc. are set (some of these attribute information are obtained by the information obtained at each data encoding. 21), the video title set information management table information (VTSI_MAT) and the video title set program chain table (VTS_PGCIT) 10 including the information about the program chain as shown in FIG.
0 is created. At this time, if necessary, the video title set direct access pointer table (VTS_
DAPT) is also created. Encoded main video data, audio data, and sub video data (Com Vi
deo, Comp Audio, Comp Sub-p
ict) is subdivided into fixed packs and each data cell is arranged while arranging an NV pack at the beginning of each VOBU unit so that the data can be reproduced in the order of the time code of each data. A video object (VOB) composed of cells is formed, and this set of video objects is formatted into a structure of a title set.

Note that in the flow shown in FIG. 53, the program chain information uses the database of the system controller (Syscon) 205 in the process of step S277, or re-enters data as necessary. Run and program chain information (PGI)
It is described as.

FIG. 54 shows a disc formatter system for recording a title set formatted as described above on an optical disc. As shown in FIG. 54, in the disk formatter system, these file data are stored in the volume formatter (VF) from the memories 220 and 222 in which the created title set is stored.
MT) 226. The volume formatter (VFMT) 226 extracts the management information from the title sets 84 and 86 to create the video manager 71, and creates the logical data in the state to be recorded on the disc 10 in the arrangement order shown in FIG. Data for error correction is added to the logical data created by the volume formatter (VFMT) 226 in the disk formatter (DFM).
T) 228 is added and reconverted into physical data to be recorded on the disc. In the modulator (Modulator) 230, the physical data created by the disk formatter (DFMT) 228 is converted into recording data to be actually recorded on the disk, and the modulated recording data is recorded by the recording device (Recoder) 232 on the disk 10 Recorded in.

A standard flow for creating the above-mentioned disc will be described with reference to FIGS. 55 and 56. Figure 5
5 shows a flow in which logical data to be recorded on the disk 10 is created. That is, step S28
As indicated by 0, parameter data such as the number of video data files, the order of arrangement, the size of each video data file, etc. is set at the beginning. Next, from the parameters set as shown in step S281 and the video title set information 281 of each video title set 72, the video manager 7
1 is created. Then, as shown in step S282, the video manager 71 and the video title set 72 are displayed.
In this order, the data is arranged along the corresponding logical block number, and the logical data to be recorded on the disk 10 is created.

Thereafter, a flow for creating physical data to be recorded on the disc as shown in FIG. 56 is executed. That is, as shown in step S283, the logical data is divided into a certain number of bytes, and error correction data is generated. Next, as shown in step S284, the logical data divided into a fixed number of bytes and the generated error correction data are combined to create a physical sector. afterwards,
As shown in step S285, physical data is created by combining the physical sectors. In this way, the physical data generated by the flow shown in FIG. 56 is subjected to a modulation process based on a fixed rule to create recorded data. Then, this recording data is recorded on the disc 10.

The above-mentioned data structure can be applied not only to the case where it is recorded on a recording medium such as an optical disk and distributed to the user for reproduction, but also to a communication system as shown in FIG. That is, according to the procedure shown in FIGS.
The optical disc 10 in which the video manager 71, the video title set 72, etc. are stored in the reproducing apparatus 300, the encoded data is digitally taken out from the system CPU section 50 of the reproducing apparatus, and the modulator / transmitter is used. It may be sent to the user or the cable subscriber side by radio wave or cable by 310. Data encoded by a provider such as a broadcast station is created by the encoding system 320 shown in FIGS. 51 and 54, and this encoded data is similarly generated by the modulator / transmitter 3.
It may be sent to the user or the cable subscriber side by radio wave or cable by 10. In such a communication system, the information of the video manager 71 is first modulated by the modulator / transmitter 310 or directly distributed to the user for free, and when the user becomes interested in the title, the user or subscriber can In response to the request from the user, the title set 72 is transmitted to the user side by the modulator / transmitter 310 via radio waves or a cable. In the transfer of the title, first, the video title set information 94 is sent under the control of the video manager 71, and thereafter, the video object 95 for the title in the video title set reproduced by the title set information 94 is transferred. At this time, if necessary, the video object 95 for the video title set menu is also sent. The transmitted data is received by the receiver / demodulator 400 on the user side, and is processed as encoded data by the system CPU unit 50 of the reproducing apparatus on the user or subscriber side shown in FIG. Is played.

In the transfer of the video title set 72, attribute information (VMGM) is used as video data management information.
_V_ATR, VMGM_AST_ATR, VMGM_
SPST_ATR), (VTSM_V_ATR, VTS
M_AST_ATR, VTSM_SPST_ATR) and (VTS_V_ATR, VTS_AST_ATR, V
Since (TS_SPST_ATR) is transferred for each title set, it is possible to process the reproduction processing of video data and the like under reproduction conditions suitable for the reproduction system on the user side or the subscriber side.

[0155]

As described above, according to the present invention, when displaying video data, the output method of the video data can be arbitrarily changed based on the video data attribute added to the video data. Therefore, the video data in the video title set can be optimally reproduced by referring to these attribute information. Moreover, by preparing a plurality of title sets in which video / audio and sub-picture data having different attribute information are stored and storing them on the optical disc, even in the case of a reproducing system having a different standard, a suitable mode for the reproducing system can be obtained. Video / audio and sub-picture data can be reproduced.

In addition, according to the present invention, when there are a plurality of audio streams and sub-picture streams for video data, the attributes for each stream and channel are recorded in numerical order, respectively, so that the specified number of attributes is recorded. The data attribute of the audio stream or the sub-picture stream can be easily acquired, and the reproduction system can be set to the optimum reproduction state corresponding to the designated audio stream or sub-picture stream. Since information about whether or not to permit the change of the display mode suitable for the playback screen for the original video is described as attribute information, the video etc. is always played back with the creator's intention reflected. can do.

[Brief description of drawings]

FIG. 1 is a block diagram showing an outline of an optical disk device according to an embodiment of the present invention.

2 is a block diagram showing details of a mechanical portion of the disk drive device shown in FIG. 1. FIG.

3 is a perspective view schematically showing the structure of an optical disc loaded in the disc drive device shown in FIG. 1. FIG.

FIG. 4 shows a structure of a logical format of the optical disc shown in FIG.

5 shows the structure of the video manager shown in FIG.

FIG. 6 shows the video object set (VO) shown in FIG.
It is an example showing the structure of (BS).

FIG. 7 is a video manager (VMGI) shown in FIG.
Volume manager information management table (VMGI
_MAT) parameters and contents.

8 is a bit table describing video attributes of the VMGM shown in FIG.

FIG. 9 is an explanatory diagram showing a relationship between a display aspect ratio and a display mode according to description contents of a video attribute of VMGM.

FIG. 10 is a plan view for explaining that the letterbox display shown in FIG. 9 is changed.

11 is a bit table describing audio stream attributes of the VMGM shown in FIG.

FIG. 12 is a bit table describing attributes of a sub-picture stream of VMGM shown in FIG.

13 is a video manager (VMG) shown in FIG.
Title search pointer table (TSPT) in I)
Shows the structure of.

14 shows parameters and contents of information (TSPTI) of the title search pointer table (TSPT) of the title search pointer table (TSPT) shown in FIG.

15 shows parameters and contents of a title search pointer (TT_SRP) corresponding to an input number of the title search pointer table (TSPT) shown in FIG.

FIG. 16 is a diagram for explaining the structure of a program chain stored in a file.

FIG. 17 shows the video manager (VMG) shown in FIG.
I) video title set attribute table (VTS_
(ATRT) structure is shown.

18 shows parameters and contents of video title set attribute table information (VTS_ATRTI) of the video title set attribute table (VTS_ATRT) shown in FIG.

19 shows parameters and contents of a video title set attribute search pointer (VTS_ATR_SRP) of the video title set attribute table (VTS_ATRT) shown in FIG.

20 shows parameters and contents of a video title set attribute (VTS_ATR) of the video title set attribute table (VTS_ATRT) shown in FIG.

FIG. 21 shows a structure of the video title set shown in FIG.

FIG. 22 shows parameters and contents of a management table (VTSI_MAT) of video title set information of the video title set information (VTSI) shown in FIG. 21.

23 is a table (VTSI_MA) shown in FIG.
T) audio stream attribute (VTS_
(AST_ATR) bit map table.

FIG. 24 shows the structure of a table (VTS_PGCIT) of video title set program chain information shown in FIG.

FIG. 25 shows parameters and contents of information (VTS_PGCITI) of the table (VTS_PGCIT) of the video title set program chain information shown in FIG.

FIG. 26 shows parameters and contents of a search pointer (VTS_PGCIT_SRP) of the video title set program chain information table (VTS_PGCIT) shown in FIG.

27 shows the structure of program chain information (VTS_PGCI) for a video title set corresponding to the program chain of the video title set program chain information table (VTS_PGCIT) shown in FIG. 24.

FIG. 28 shows the program chain information (V
General information on the program chain of TS_PGCI (P
The parameters and contents of GC_GI) are shown.

FIG. 29 shows the program chain information (V
TS_PGCI) program chain map (PG
C_PGMAP) structure is shown.

30 shows the parameters and contents of the entry cell number (ECELLN) for the program described in the program chain map (PGC_PGMAP) shown in FIG.

FIG. 31 shows the program chain information (V
Cell playback information table (C_PBI) of TS_PGCI)
The structure of T) is shown.

FIG. 32 is a cell reproduction information table (C_
PBIT) parameters and contents are shown.

FIG. 33 shows the program chain information (V
The structure of cell position information (C_POSI) of TS_PGCI is shown.

34 is a diagram illustrating the cell position information (C_POS) shown in FIG.
The parameters and contents of I) are shown.

FIG. 35 shows a structure of the navigation pack shown in FIG.

FIG. 36 shows the structure of the video, audio and sub-picture packs shown in FIG.

37 shows the parameters and contents of the playback control information (PCI) of the navigation pack shown in FIG.

38 shows parameters and contents of general information (PCI_GI) in the reproduction control information (PCI) shown in FIG.

39 shows parameters and contents of disc search information (DSI) of the navigation pack shown in FIG. 35.

FIG. 40 shows the disc search information (DS
The parameters and contents of DSI general information (DSI_GI) of I) are shown.

41 is a video object (VO shown in FIG.
The parameters and contents of the synchronous reproduction information (SYNCI) of B) are shown.

42 is a block diagram showing a circuit configuration of the video decoder section shown in FIG. 1.

43 is a block diagram showing a circuit configuration of the audio decoder section shown in FIG. 1.

44 is a block diagram showing a circuit configuration of a sub-picture decoder section shown in FIG. 1.

45 is a block diagram showing a circuit configuration of a video reproduction processing unit shown in FIG.

46 is a block diagram showing a circuit configuration of an audio reproduction processing section shown in FIG. 1.

47 is a block diagram showing a circuit configuration of an audio mixing unit shown in FIG.

FIG. 48 is a flowchart for explaining a process of acquiring a video data attribute and setting a playback system.

FIG. 49 is a flowchart for explaining an audio data attribute acquisition and reproduction system setting process.

FIG. 50 is a flowchart for explaining sub-picture data attribute acquisition and reproduction system setting processing.

FIG. 51 is a block diagram illustrating an encoder system that encodes video data to generate a video file.

52 is a flowchart showing the encoding process shown in FIG. 51. FIG.

53 is a flowchart for creating a file of video data by combining the main video data, audio data, and sub-picture data encoded by the flow shown in FIG. 52.

FIG. 54 is a block diagram showing a system of a disc formatter for recording a formatted video file on an optical disc.

FIG. 55 is a flowchart for creating logical data to be recorded on the disc in the disc formatter shown in FIG. 54.

FIG. 56 is a flowchart for creating physical data to be recorded on a disc from logical data.

57 is a schematic diagram showing a system for transferring the video title set shown in FIG. 4 via a communication system. FIG.

[Explanation of symbols]

4 ... Key operation / display section 6 ... Monitor section 8 ... Speaker section 10 ... Optical disk 11 ... Motor drive circuit 12 ... Spindle motor 16 ... Light reflection layer 24 ... Clamping area 26 ... Lead-out area 27 ... Lead-in area 28 ... Data Recording area 30 Disk drive unit 32 Optical head 32 33 Feed motor 36 Focus circuit circuit 37 Feed motor drive circuit 38 Tracking circuit 40 Head amplifier 44 Servo processing circuit 50 System CPU unit 52 System ROM / RAM section 54 ... System processor section 56 ... Data RAM section 58 ... Video decoder section 60 ... Audio decoder section 62 ... Sub-picture decoder section 64 ... D / A and data reproducing section 70 ... Volume and file structure Area 71 Video manager (VMG) 72 Video title set (VTS) 73 Other recording area 74 File 75 Video manager information (VMGI) 76 Video object set for video manager menu (VMGM_VOBS) 77 Video Backup of manager information (V
MGI_BUP) 78 ... Video management information management table (VMGI_M
AT) 79 ... Title search pointer table (TT_
SRPT) 80 ... Video title set attribute table (VTS
_ATRT) 82 ... video object set (VOBS) 83 ... video object (VOB) 84 ... cell 95 85 ... video object unit (VOBU) 86 ... navigation pack (NV pack) 88 ... video pack (V pack) 90 ... sub-picture pack (SP pack) 91 ... Audio pack (A pack) 95 ... Video object set for menu of video title set (VTSM_VOBS) 96 ... Video object set for title of video title set (VTSTT_VOBS) 97 ... Video title set information (VTSI) ) Backup 98 ... Video title set information management table (V
TSI_MAT) 99 ... Video title set part of title search pointer table (VTS_PTT_SRPT) 100 ... Video title set program chain information table (VTS_PGCIT) 101 ... Video title set time search map table (VTS_MAPT) 104 ... PGC information (VTS_PGCI) 106 ... Program Chain program map (P
GC_PGMAP) 107 ... Cell reproduction information table (C_PBIT) 108 ... Cell position information table (C_POSIT) 111 ... Video title set menu PGCI unit table (VTSM_PGCI_UT) 112 ... Video title set cell address table (VTS_C_ADT) 113 ... VTS_PGCIT search pointer (V)
TS_PGCIT_SRP) 116 ... PCI packet 117 ... DSI packet 201 ... Video reproduction processing unit 202 ... Audio reproduction processing unit 203 ... Audio mixing unit 204 ... Frame rate processing unit 205 ... System controller (Sys, con) 206 ... Video encoder (VENC) 207 Audio encoder (AENC) 208 Sub video encoder (SPENC) 215 Memory 226 Volume formatter (VFMT) 228 Disk formatter (DFMT) 230 Modulator 232 Recorder 320 Encoding system 310 … Modulator / transmitter

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location H04N 5/76 H04N 5/76 B 5/93 5/93 E G11B 27/00 D

Claims (68)

[Claims] 1. A reproduction data area in which video data is stored, management information about the stored video data itself, and reproduction information about a reproduction procedure of the video data are described in a reproduction information area, wherein the management information is In a system for reproducing video data from a recording medium having a reproduction information area containing information on video attributes specific to the video data necessary for converting the video data into a video signal, the video data and the reproduction information are reproduced from the reproduction information area. A search unit for searching, a conversion unit provided corresponding to each of the video attributes and converting the searched video data into a video signal; and a selection unit selecting the conversion unit according to the searched video attribute information. Playback system. 2. The attribute information includes information on first and second compression modes for compressing video data, and the conversion section selects the video data by the selection means, respectively. The reproduction system according to claim 1, further comprising first and second decoding units for decoding in the first and second decompression modes corresponding to. 3. The attribute information includes information on first and second frame rates that determine a display mode of video data, and the conversion section is selected by the selection means to be the first.
The reproduction system according to claim 1, further comprising first and second conversion units for converting the video data into a video signal to be displayed according to the second and second frame rates. 4. The attribute information includes information about a first aspect ratio and a second aspect ratio that represent a screen ratio when video data is displayed as an image, and the conversion section is selected by the selection means to be the first aspect ratio. The reproduction system according to claim 1, further comprising first and second conversion units for converting the video signal into a video signal having a second aspect ratio. 5. The attribute information includes information on first and second display modes representing a display system for displaying video data as an image, and the conversion section selects the video data by the selection means. The reproduction system according to claim 1, further comprising first and second conversion units for converting into a video signal having a mode. 6. The attribute information includes information permitting display in the first and second display modes, and the first and second
The conversion unit of the video data to this authorized first
And a video signal having a second display mode. 7. The reproduction data area stores audio data, the attribute information includes information about an audio coding mode of the audio data, and the conversion unit includes a decoding unit that decodes the audio data according to the coding mode. The reproduction system according to claim 1, comprising: 8. The audio data is stored in the reproduction data area, the attribute information includes information about an audio type of the audio data, and the conversion unit converts the audio data into an audio signal suitable for this audio type. The reproduction system according to claim 1, further comprising a conversion unit for converting. 9. The reproduction data area stores audio data, the attribute information includes information about an application type of the audio data, and the conversion unit includes:
The reproduction system according to claim 1, further comprising a conversion unit for converting audio data into an audio signal suitable for this application type. 10. The reproduction data area stores audio data, the attribute information includes information on a quantization bit number of the audio data, and the conversion unit decodes the audio data according to the quantization bit number. The reproduction system according to claim 1, further comprising a decoding unit. 11. The reproduction data area stores audio data, the attribute information includes information about a sampling frequency of the audio data, and the conversion unit includes a decoding unit that decodes the audio data according to the sampling frequency. The reproduction system according to claim 1, wherein 12. The reproduction data area stores audio data, the attribute information includes information about the number of audio channels of the audio data, and the conversion unit includes:
The reproduction system according to claim 1, further comprising a conversion unit for converting audio data into audio channel signals corresponding to a number selected in the number of audio channels. 13. The reproduction system according to claim 1, wherein sub-picture data is stored in the reproduction data area. 14. The reproduction data area stores sub-picture data, the attribute information includes information about a sub-picture coding mode of the sub-picture data, and the conversion unit stores the sub-picture data in the sub-picture code. The reproduction system according to claim 1, further comprising a decoding unit that decodes according to the encoding mode. 15. The reproduction data area stores sub-picture data, the attribute information includes information about a sub-picture display type of the sub-picture data, and the conversion unit converts the sub-picture data to the sub-picture display type. The reproduction system according to claim 1, further comprising a conversion unit for converting the sub-picture signal suitable for the above. 16. The reproduction data area stores audio data, the attribute information includes information about a multi-channel audio stream of the audio data, and the conversion unit decodes the audio data according to an attribute of the multi-channel audio stream. The reproduction system according to claim 1, further comprising a decoding unit for performing the reproduction. 17. The reproduction data area stores audio data, the attribute information includes information about a multi-channel audio stream of the audio data, and the conversion unit mixes the audio data according to an attribute of the multi-channel audio stream. The reproduction system according to claim 1, further comprising a mixing unit for performing the reproduction. 18. The reproduction data area stores video data, audio data, sub-picture data and control data for controlling reproduction of these data, and the control data is time information defining a reproduction time of the video data. The reproduction system according to claim 1, further comprising synchronization information regarding audio data and sub-picture data reproduced in synchronization with the video data. 19. The reproduction system according to claim 1, wherein audio data is stored in the reproduction data area, and the management information includes the number of audio streams included in the audio data. 20. The reproduction according to claim 1, wherein sub-picture data is stored in the reproduction data area, and the management information includes the number of sub-picture streams included in the sub-picture data. system. 21. The video data includes menu data for displaying a menu relating to video data to be reproduced, and the management data is unique attribute information necessary for converting the menu data into a reproduction signal for menu. The reproduction system according to claim 1, comprising: 22. The video data includes management menu data for displaying selection items of data recorded on the recording medium, and the management data is for converting the management menu data into a reproduction signal for menu. The reproduction system according to claim 1, wherein the reproduction system includes necessary unique attribute information. 23. A reproduction data area in which video data is stored, management information about the stored video data itself, and reproduction information about a reproduction procedure of the video data are described in the reproduction information area, wherein the management information is In the method of reproducing video data from a recording medium having a reproduction information area containing information on video attributes specific to the video data necessary for converting the video data into a video signal, the video data and the reproduction information are reproduced from the reproduction information area. A step of searching, a step of selecting a conversion method according to the searched video attribute information, and a step of converting the video data searched by the selected conversion method into a video signal. Characteristic reproduction method. 24. The attribute information includes information on first and second compression modes for compressing video data, and the converting step selects the video data by the selecting means, respectively. First and second corresponding to
24. The reproducing method according to claim 23, further comprising first and second decoding steps of decoding in the decompression mode. 25. The attribute information includes information on first and second frame rates that determine a display mode of video data, and the converting step is selected by the selecting means according to the first and second frame rates, respectively. 24. The reproducing method according to claim 23, further comprising first and second conversion steps of converting video data into a video signal to be displayed. 26. The attribute information includes information on a first aspect ratio and a second aspect ratio representing a screen ratio when displaying video data as an image, and the converting step is selected by the selecting means to be the first aspect ratio. 24. The reproducing method according to claim 23, further comprising first and second conversion steps of converting into a video signal having a second aspect ratio and a second aspect ratio. 27. The attribute information includes information on first and second display modes representing a display system for displaying video data as an image, and the converting step selects the video data by selecting means respectively. 24. The reproducing method according to claim 23, further comprising first and second conversion steps of converting into a video signal having a mode. 28. The attribute information includes information for permitting display in the first and second display modes, and in the first and second conversion steps, the video data is transmitted under the permitted first.
28. The reproducing method according to claim 27, further comprising converting to a video signal having a second display mode. 29. Audio data is stored in the reproduction data area, the attribute information includes information about an audio coding mode of the audio data, and the converting step includes a decoding step of decoding the audio data according to the coding mode. 24. The reproducing method according to claim 23, further comprising: 30. Audio data is stored in the reproduction data area, the attribute information includes information about an audio type of the audio data, and the converting step converts the audio data into an audio signal suitable for this audio type. 24. The reproducing method according to claim 23, further comprising a converting step of: 31. Audio data is stored in the reproduction data area, the attribute information includes information about an application type of the audio data, and the conversion unit step converts the audio data into an audio signal suitable for this application type. The reproducing method according to claim 23, further comprising a converting step of converting. 32. Audio data is stored in the reproduction data area, the attribute information includes information about a quantization bit number of the audio data, and the converting step decodes the audio data according to the quantization bit number. 24. The reproducing method according to claim 23, further comprising a decoding step. 33. Audio data is stored in the reproduction data area, the attribute information includes information about a sampling frequency of the audio data, and the converting step includes:
24. The reproducing method according to claim 23, further comprising a decoding step of decoding audio data according to the sampling frequency. 34. Audio data is stored in the reproduction data area, the attribute information includes information regarding the number of audio channels of the audio data, and the converting step selects the audio data within the number of audio channels. 24. The reproducing method according to claim 23, further comprising a converting step of converting into an audio channel signal corresponding to the number. 35. The reproducing method according to claim 23, wherein sub-picture data is stored in the reproduction data area. 36. Sub-picture data is stored in the reproduction data area, the attribute information includes information about a sub-picture coding mode of the sub-picture data, and the converting step includes the sub-picture data in the sub-picture code. 24. The reproducing method according to claim 23, further comprising a decoding step of decoding in accordance with the encoded mode. 37. Sub-picture data is stored in the reproduction data area, the attribute information includes information about a sub-picture display type of the sub-picture data, and the converting step converts the sub-picture data into the sub-picture display type. 24. The reproducing method according to claim 23, further comprising a converting step of converting into a sub-picture signal suitable for. 38. Sub-picture data is stored in the reproduction data area, the attribute information includes information about a sub-picture type of the sub-picture data, and the converting step adapts the sub-picture data to the sub-picture type. 24. The reproducing method according to claim 23, further comprising a step of converting the sub-picture signal. 39. The reproduction data area stores audio data, the attribute information includes information about a multi-channel audio stream of the audio data, and the converting step decodes the audio data according to an attribute of the multi-channel audio stream. 24. The reproducing method according to claim 23, further comprising a decoding step of performing. 40. The reproduction data area stores audio data, the attribute information includes information about a multi-channel audio stream of the audio data, and the converting step mixes the audio data according to an attribute of the multi-channel audio stream. 24. The reproducing method according to claim 23, further comprising a mixing step of: 41. The reproduction data area stores video data, audio data, sub-picture data and control data for controlling reproduction of these data, and the control data is time information defining a reproduction time of the video data. 24. The reproducing method according to claim 23, further comprising synchronization information regarding audio data and sub-picture data reproduced in synchronization with the video data. 42. The reproducing method according to claim 23, wherein audio data is stored in the reproduction data area, and the management information includes the number of audio streams included in the audio data. 43. The reproduction according to claim 23, wherein sub-picture data is stored in the reproduction data area, and the management information includes the number of sub-picture streams included in the sub-picture data. Method. 44. The video data includes menu data for displaying a menu relating to reproduced video data, and the management data is unique attribute information necessary for converting the menu data into a reproduction signal for menu. 24. The reproducing method according to claim 23, comprising: 45. The video data includes management menu data for displaying selection items of data recorded on the recording medium, and the management data is for converting the management menu data into a reproduction signal for menu. 24. The reproducing method according to claim 23, which includes necessary unique attribute information. 46. A plurality of video data units to be reproduced in time series, each of which is to be reproduced within a fixed time range, the plurality of data units compressing the video data into packets. Means for generating video data composed of a data pack sequence and for generating management information about the video data itself and reproduction management data designating a reproduction procedure thereof, wherein the management information is
A generation means including information on video attributes unique to the video data necessary for converting the video data into a video signal, a means for transferring the video data unit after transferring the reproduction management data, and a corresponding video attribute. A conversion unit provided for converting the transferred video data unit into a video signal; and a selection unit for selecting the conversion unit of the conversion unit according to the video attribute information of the transferred reproduction management data. A communication system for transferring reproduction data. 47. The attribute information includes information on first and second compression modes for compressing video data, and the conversion section selects the video data by the selection means, respectively. 47. The communication system according to claim 46, further comprising first and second decoding units for decoding in the first and second expansion modes corresponding to. 48. The attribute information includes information on first and second frame rates that determine a display mode of video data, and the conversion section is selected by the selection means according to the first and second frame rates, respectively. The communication system according to claim 46, comprising first and second conversion units for converting video data into a displayed video signal. 49. The attribute information includes information on a first aspect ratio and a second aspect ratio representing a screen ratio when video data is displayed as an image, and the conversion section is selected by the selecting means to be the first aspect ratio. 47. The communication system of claim 46, including first and second conversion units for converting to a video signal having a second aspect ratio. 50. The attribute information includes information on first and second display modes representing a display system for displaying video data as an image, and the conversion section selects the video data by the selection means. The communication system according to claim 46, comprising first and second conversion units for converting to a video signal having a mode. 51. The attribute information includes information for permitting display in the first and second display modes, and the first and second conversion units include the first and second permitted video data. The communication system according to claim 50, wherein the communication signal is converted into a video signal having two display modes. 52. The data pack sequence further includes an audio data pack sequence in which audio data is packetized, the attribute information includes information on an audio coding mode of the audio data, and the conversion unit codes the audio data. The communication system according to claim 46, further comprising a decoding unit that decodes according to a mode. 53. The data pack sequence further includes an audio data pack sequence in which audio data is packetized, the attribute information includes information regarding an audio type of the audio data, and the conversion unit converts the audio data into the audio type. The communication system according to claim 46, further comprising a conversion unit for converting the audio signal suitable for. 54. The data pack sequence further includes an audio data pack sequence in which audio data is packetized, the attribute information includes information regarding an application type of the audio data, and the conversion unit converts the audio data into the application type. The communication system according to claim 46, further comprising a conversion unit for converting the audio signal suitable for. 55. The data pack sequence further includes an audio data pack sequence in which audio data is packetized, the attribute information includes information about a quantization bit number of the audio data, and the conversion unit converts the audio data. The communication system according to claim 46, comprising a decoding unit for decoding according to the number of quantization bits. 56. The data pack sequence further includes an audio data pack sequence in which audio data is packetized, the attribute information includes information regarding a sampling frequency of the audio data, and the conversion unit converts the audio data into the sampling frequency. 47. The communication system according to claim 46, comprising a decoding unit for decoding according to. 57. The data pack sequence further includes an audio data pack sequence in which audio data is packetized, the attribute information includes information regarding the number of audio channels of the audio data, and the conversion unit converts the audio data into the audio data. The communication system according to claim 46, comprising a conversion unit for converting into an audio channel signal corresponding to a number selected in the number of channels. 58. The communication system according to claim 46, wherein the data pack sequence further includes a sub-picture data pack sequence in which sub-picture data is packetized. 59. The data pack sequence further includes a sub-picture data pack sequence in which sub-picture data is packetized, the attribute information includes information regarding a sub-picture coding mode of the sub-picture data, and the conversion unit includes: The communication system according to claim 46, further comprising a decoding unit for decoding the sub-picture data according to the sub-picture coding mode. 60. The data pack sequence further includes a sub-picture data pack sequence in which sub-picture data is packetized, the attribute information includes information regarding a sub-picture display type of the sub-picture data, and the conversion unit includes a sub-picture. The communication system according to claim 46, further comprising a conversion unit that converts the video data into a sub video signal suitable for the sub video display type. 61. The data pack sequence further includes a sub-picture data pack sequence in which sub-picture data is packetized, the attribute information includes information regarding a sub-picture type of the sub-picture data, and the conversion unit includes the sub-picture. The communication system according to claim 46, comprising a conversion unit for converting data into a sub-picture signal suitable for this sub-picture type. 62. The data pack sequence further includes an audio data pack sequence in which audio data is packetized, the attribute information includes information about a multi-channel audio stream of audio data, and the conversion unit multi-codes the audio data. The communication system according to claim 46, comprising a decoding unit for decoding according to an attribute of a channel audio stream. 63. The data pack sequence further includes an audio data pack sequence in which audio data is packetized, the attribute information includes information about a multi-channel audio stream of audio data, and the conversion unit multi-codes the audio data. The communication system according to claim 46, further comprising mixing means for mixing according to attributes of the channel audio stream. 64. The pack string further includes a control data pack in which video data, audio data, sub-picture data, and control data for controlling reproduction of these data are packetized, and the control data is a reproduction time of the video data. 47. The communication system according to claim 46, comprising: time information that defines the video data and synchronization information regarding audio data and sub-picture data that are reproduced in synchronization with the video data. 65. The data pack sequence according to claim 46, further comprising an audio data pack sequence in which audio data is packetized, and the management information includes the number of audio streams included in the audio data. Communication system. 66. The data pack string further includes a sub-picture data pack string in which sub-picture data is packetized, sub-picture data is stored in the reproduction data area, and the management information is the sub-picture. The communication system according to claim 46, comprising the number of sub-picture streams included in the data. 67. The video data includes menu data for displaying a menu relating to reproduced video data, and the management data includes unique attribute information necessary for converting the menu data into a menu reproduction signal. The communication system according to claim 46, comprising: 68. The video data includes management menu data for displaying selection items of data recorded on the recording medium, and the management data is for converting the management menu data into a reproduction signal for menu. The communication system according to claim 46, including necessary unique attribute information.