JPH08339637A - Recording medium, recording apparatus for recording data on the recording medium, and recording method thereof, reproducing apparatus for reproducing data from the recording medium, and reproducing method - Google Patents

Abstract

(57) Abstract: The present invention can handle a plurality of types of various types of data. According to the present invention, data is recorded in a data area of an optical disc in a hierarchical structure of program chains, programs, cells, and packs, and each pack records a pack header for identifying each pack and a data stream. A packet header having a stream ID indicating at least a private stream and a substream ID indicating the type of the private stream, and the type includes packet data of audio data of Dolby AC3, This indicates whether the packet data is audio data packet data of linear PCM, sub-picture data packet data, or computer data packet data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium, such as an optical disc, for recording data of different types and types such as compressed moving image data and audio data, and a recording device for recording data on this recording medium. The present invention relates to a method for recording data on the recording medium, a reproducing device for reproducing data from the recording medium, and a method for reproducing data from the recording medium.

[0002]

2. Description of the Related Art Conventionally, as a method for compressing (encoding) digital moving image data and audio data, MPEG (Movi
The ng Picture Experts Group) system has come to be internationally standardized. This MPEG compression method is a method for variable length compression of digital moving image data (video data) and audio data.

Along with this, a system format system corresponding to the MPEG compression system is also defined as an MPEG system layer.

This MPEG system layer is defined so that it can be easily handled in a communication system, and is expressed by using a reference time for each data so that moving data, audio, and other data can be transferred and reproduced synchronously. The transfer start time and the reproduction start time are specified.

In addition, in the MPEG system layer,
Video compression data stream (MPEG video data) and audio compression data stream (MPEG audio data)
The data type is defined by the stream ID, but other data types are released to the user as a private stream.

However, this can support only two types of data that can be added by the user, thus narrowing the expandability.

[0007] This has the drawback that various kinds of data cannot be handled freely and the multimedia era cannot be dealt with.

In audio data other than MPEG audio data, if the maximum data length of the packet length is determined and the data length of the packet cannot be divided by the data number of the completed frame data block, There is a possibility that the start address of this frame data block may not be known due to the inclusion of the previous data block, and there is a possibility that the reproduction may not be possible when reproducing in the middle.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to be able to handle a plurality of types of various types of data.

Further, when the data to be handled is linear audio data, it is possible to smoothly reproduce from the middle,
For computer data, the purpose is to be able to easily detect the usable environment.

[0011]

The recording medium of the present invention comprises:
A management area is formed in a part of the area, and a data area is formed in another area. In the data area, data is divided into a plurality of program chains and recorded, and each program chain consists of a plurality of programs. One program is composed of a plurality of cells, one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack is composed of a pack header for identifying each pack and a packet in which a data stream is recorded. The packet comprises at least a packet header having data indicating a private stream, data indicating the type of the private stream, and packet data corresponding to this type, and the management area includes a program chain, a program, a cell, and a pack for the data area. Management data that manages connections is recorded There.

In the recording medium of the present invention, a management area is formed in a part of the area, and a data area is formed in another area. A plurality of programs are recorded in the data area, and one program includes a plurality of programs. The packets are recorded in a hierarchical structure of packs, each pack includes a packet in which a pack header for identifying each pack and a data stream are recorded, and the packet includes a packet header and a private stream having data indicating at least a private stream. Management data for managing the connection between each program and the pack in the data area is recorded in the management area.

In the recording apparatus of the present invention, a management area is formed in a part of the area and a data area is formed in another area, and the data is divided into a plurality of program chains and recorded in the data area. Packet consisting of a plurality of programs, one program consisting of a plurality of cells, one cell being recorded in a hierarchical structure consisting of a plurality of packs, and a pack header for identifying each pack and data is recorded. In the data recorded on the recording medium having, the receiving means for receiving the audio data or the sub-picture data, a part of the frame data of the audio data received by this receiving means, the start address of this frame data and the audio data. Packet consisting of stream number and audio data First forming means for forming a pack by adding a pack header for identifying a pack to a packet by a data and a packet header having a packet length and data indicating that the packet data is a private stream; Packet data consisting of a part of the sub-picture data received by the means, stream number of the sub-picture data and data indicating the sub-picture data, and data indicating that the packet data is a private stream and a packet header having a packet length From a second forming means for forming a pack by adding a pack header for identifying the pack to the packet according to the above, and a recording means for recording the pack formed by the first or second forming means on the recording medium. It is configured.

In the recording apparatus of the present invention, a management area is formed in a part of the area and a data area is formed in another area, and the data is divided into a plurality of program chains and recorded in the data area. Packet consisting of a plurality of programs, one program consisting of a plurality of cells, one cell being recorded in a hierarchical structure consisting of a plurality of packs, and a pack header for identifying each pack and data is recorded. Which is to be recorded on a recording medium having a Dolby AC3 audio data, linear audio data, computer data, or sub-picture data, and a part of the frame data of the Dolby AC3 audio data received by the receiving unit. And the start address of this frame data and Dolby A pack for identifying a pack in a packet by packet data including a stream number of C3 audio data and data indicating Dolby AC3 audio data, and data indicating that this packet data is a private stream and a packet header having a packet length. First forming means for adding a header to form a pack, a part of frame data of the linear audio data received by the receiving means, a start address of the frame data, a stream number of the linear audio data, and linear audio data are shown. A pack header for identifying a pack is added to a packet composed of packet data composed of data and a packet header having data or a packet length indicating that this packet data is a private stream. Second forming means for forming a click, use of some the computer data of the computer data received by said receiving means CP
A pack header for identifying a pack in a packet by packet data including U and environment information of the OS used and data indicating computer data, data indicating that this packet data is a private stream, and a packet header having a packet length Packet data consisting of a part of the sub-picture data received by the receiving means, a stream number of the sub-picture data, and data indicating the sub-picture data, and the packet data. Is a private stream, and fourth forming means for forming a pack by adding a pack header for identifying the pack to a packet with a packet header having a packet length, and the first to fourth of these. The pack formed by the forming means is recorded on the recording medium. And a recording means for.

In the reproducing apparatus of the present invention, a management area is formed in a part of the area and a data area is formed in another area, and the data is divided into a plurality of program chains and recorded in the data area. Each program is composed of a plurality of programs, one program is composed of a plurality of cells, and one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack is recorded with a pack header and data for identifying each pack. When reproducing data for each pack recorded from a recording medium having a packet, a reading unit for reading data for each pack of the recording medium, and a private stream in a packet header of the pack read by the reading unit The first judging means for judging the presence or absence of data indicating When the private stream is judged by the judgment means No. 1, the second judgment means judges whether the data is audio data or sub-picture data according to the stream type data that is read out subsequently. When the data is judged, the audio data in the pack data read by the reading means is judged by the first judging means in accordance with the start address of the frame data read subsequently to the stream type data. When the sub-picture data is judged by the first extracting means for extracting the minute portion and the second judging means, the data in the pack data read by the reading means following the stream type data is judged by the first judging means. The second extraction means for extracting the determined data length, the first or second extraction means It comprises demodulation means for demodulating the extracted data corresponding to the type of data judged by the second judgment means, and output means for reproducing and outputting the data demodulated by the demodulation means. There is.

In the reproducing apparatus of the present invention, a management area is formed in a part of the area and a data area is formed in another area, and the data is divided into a plurality of program chains and recorded in the data area. Each program is composed of a plurality of programs, one program is composed of a plurality of cells, and one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack is recorded with a pack header and data for identifying each pack. When reproducing data for each pack recorded from a recording medium having a packet, a reading unit for reading data for each pack of the recording medium, and a private stream in a packet header of the pack read by the reading unit The first judging means for judging the presence or absence of data indicating Second judging means for judging whether the data is Dolby AC3 audio data, linear audio data, computer data, or sub-picture data based on the stream type data that is subsequently read when the private stream is judged by the judging means In the pack data read by the reading means when the Dolby AC3 audio data or linear audio data is judged by the second judging means according to the start address of the frame data read subsequently to the stream type data. The first extraction means for extracting the Dolby AC3 audio data or the linear audio data for the data length determined by the first determination means, and the computer data determined by the second determination means. Extracts the environment information of the CPU and OS used to be read,
Subsequent to this environmental information, the second extracting means for extracting the data in the pack data read by the reading means by the data length judged by the first judging means, the sub-picture data is judged by the second judging means. In this case, third extraction means for extracting the data in the pack data read by the reading means following the stream type data by the data length determined by the first determination means, the first or third extraction Demodulation means for performing demodulation on the data extracted by the means, respectively corresponding to the type of data determined by the second determination means, first output means for reproducing and outputting the data demodulated by the demodulation means, And second output means for outputting the program data extracted by the second extraction means and its environment information.

[0017]

DETAILED DESCRIPTION OF THE INVENTION 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. , FIG.
3 shows the structure of the optical disc 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-video data and audio data, which are converted into a video signal and an audio signal. The monitor unit 6 displays an image by a video signal, and the speaker unit 8 generates a sound by an audio signal.

As is known, the optical disc 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 surface of the adhesive layer 20. The optical disc 10 has a central hole 22
Around the center hole 22 on both sides thereof, a clamping area 24 for holding the optical disk 10 during its rotation is 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 disk 10 is surrounded by the clamping areas 24 on both sides of the optical disk 10.
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 disc device 12 further includes a disc 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. The system processor unit 54 includes a system time clock 54A and a register 54B, and
The video decoder unit 58, the audio decoder unit 60, and the sub-picture decoder unit 62 similarly include system time clocks (STC) 58A, 60A, and 62A.

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 disc 10, its focal point is positioned on the recording layer 16 of the optical disc 10, and the laser beam makes the minimum beam spot 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 of the optical disc 10 is tracked by a light beam, for example, at a constant linear velocity.

A control signal as an access signal is supplied to the servo processing circuit 44 from the system CPU section 50 shown in FIG. 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 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, an image is displayed on the monitor unit 6 by the video signal and the sub-image signal, and a sound is reproduced from the speaker unit 8 by the audio signal.

The detailed operation of the optical disc apparatus shown in FIG. 1 will be described later in detail with reference to the logical format of the optical disc 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 sectors are given serial numbers. In the explanation below, the logical address is
Micro UDF (micro UDF) means a logical sector number (LSN) as defined by ISO9660, a logical sector is 2048 bytes like the size of a physical sector, and a logical sector number (LSN) is a physical sector. Serial numbers are added in ascending order of numbers.

As shown in FIG. 4, the volume and file structure has a hierarchical structure and includes a volume and file structure area 70, a video manager 71, at least one or more video title sets 72, and another recording area 73. are doing. These areas are divided on the boundaries of logical sectors. Here, as in the conventional CD, one logical sector is defined as 2048 bytes. Similarly,
One logical block is also defined as 2048 bytes, so
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. Also, each video title set 72 stores compressed video data, audio data, sub-picture data, and reproduction information of these, as will be described later, and is similarly composed of a plurality of files 74. Here, the plurality of video title sets 72 is limited to a maximum of 99,
Further, the number of files 74 (File #j to File # j + 9) forming each video title set 72 is set to 10 at maximum. These files are also divided at the boundaries of logical sectors.

In the other 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 controls the video manager information (VMGI) 75 and the video object set (VMGM) for the video manager information menu.
_VOBS) 76 and video manager information backup (VMGI_BUP) 77.
Here, the video manager information (VMGI) 75 and the video manager information backup 77 (VMGI)
_BUP) 77 is a required item, and is a video object set (V) for the video manager information menu.
MGM_VOBS) 76 is optional.
Video object set for this VMGM (VMGM
_VOBS) 76 stores video data, audio data, and sub-picture data of a menu related to the volume of 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 this 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 played by voice, and his chronology is displayed in 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.

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, and by specifying the video object (VOB), for example, the 11th match that challenges World Champion is reproduced on the video. can do. Also, the video object set for menu of the video title set 72 (VTSM_VOB
S) 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. The video object (VOB) 83 is composed of one or 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 attached to the cell, 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) corresponds to the playback time of the video data composed of one or more GOPs contained in the video object unit (VOBU) as shown in FIG. Is 0.4 seconds or more and 1
It is set so that it is not larger than a 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) 87, a sub-picture pack (SP pack) 90, and an audio pack (A pack) defined by the MPEG standard. ) 91 (Computer Data Pack (C Pack) 8
A video data stream is formed by arranging GOPs composed of 8), and a video object (VOBU) 83 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 the audio pack 91, an audio pack 91 to be reproduced within the reproduction time of the video object unit to which the audio data belongs is stored in the video object unit as in the video object of the video data. Is stored. The procedure for reproducing these packs will be described later in detail together with the navigation pack (NV pack) 86.

Referring again to FIG. 5, the video manager 7
1 will be described. The video manager information 75 arranged at the head of the video manager 71 is a video title set (VTS) such as information for searching a title and information for reproducing a video manager menu.
Information for managing 72 is described, and at least 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 first table, the video manager information management table (VMGI_MAT) 78
Is an indispensable table and describes the size of the video manager 71, the start address of each information in the video manager 71, the attribute information about the video object set (VMGM_VOBS) 76 for the video manager information menu, and the like.

The second table of the video manager 71, which is the title search pointer table (TT
_SRPT) 79 describes an entry program chain (EPGC) of video titles 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.

Here, the program chain 187 is
As shown in FIG. 7, a series of programs 189 that reproduce the story of a certain title, and the program chain is continuously reproduced to complete a movie of one title. Thus, the user can watch the movie from a particular scene in the movie by specifying program 189 in program chain 187.

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.

Video manager information management table (V
Details of the description contents described in the MGI_MAT) 78 and the title search pointer table (TT_SRPT) 79 will be described below with reference to FIGS. 8, 9, 10, and 11.

As shown in FIG. 8, in the video manager information management table (VMGI_MAT) 78, a video manager 71 (VMG_ID) and a logical block (1 logical block is 2048 bytes as described above) 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, the end address (VMGI_MAT_EA) of the video manager information management table (VMGI_MAT) 78, and the start of the title search pointer table (TT_SRPT) 79. The address (TT_SRPT_SA) is described. End address of VMG_MAT78 (VMGI_M
The start address (TT_SRPT_SA) of AT_EA) and TT_SRPT79 is described by the number of logical blocks relative to the leading logical block.

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_ATR) of the video manager menu (VMGM) is described. Furthermore, this table 78 also shows the number of audio streams (VMGM) in the video manager menu (VMGM).
GM_AST_Ns), video manager menu (VMGM) audio stream attribute (VMGM)
_AST_ATR), video manager menu (V
Number of sub-picture streams of MGM (VMGM_SPST)
_Ns) and video manager menu (VMGM)
Attribute of the sub-picture stream (VMGM_SPST_AT
R) is described.

Title search pointer table (TT
In the _SRPT) 79, the information (TSPTI) of the title search pointer table is described first as shown in FIG. 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. 11, each title search pointer (T
T_SRP) 93 has a video title set number (V
TSN), program chain number (PGCN), and start address (VTS_) of the video title set 72.
SA) 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).

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, as shown in FIG. 12, four items 94, 95, 96, 97 are described in the order of description. 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 entry search points, video object set. Information for reproducing 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 is video title set (VT
S) 72. Video title set information (VTSI) 94 and backup of this information (VTSI)
_BUP) 97 and the video object set (VTSM_VOB) for the video title set menu.
S) 95 and a video object set (VTSTT_VOBS) 96 for a video title set title are arranged. Which video object set (V
TSM_VOBS and VTSTT_VOBS) 95, 9
6 has 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 four tables 98, 99, as shown in FIG.
It consists of 100 and 101, and four tables 98 and 9
9, 100 and 101 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 indispensable table and is the size of the video title set (VTS) 72, the start address of each information in the video title set (VTS) 72, and the video. Title set (VTS)
The attributes of the video object set (VOBS) 82 in 72 are described.

The second table, the video title set direct access pointer table (VTS_DA
PT) 99 is an optional table provided as necessary, and is a program chain (included in the video title set 72 that can be selected according to the title operation from the key operation / display unit 4 of the apparatus). PGC)
And / or the program (PG) is described.

The third table, the video title set program chain information table (VTS_PGCI)
T) 100 is an essential table and describes VTS program chain information (VTS_PGCI).
The fourth table, the video title set time search map table (VTS_MAPT) 101, is an optional table that is provided as needed, and this map table (VTS_MAPT) for a fixed time of display is displayed.
Information about the recording position of video data in each program chain (PGC) of the title set 72 to which the (PT) 101 belongs is described.

Next, the video title information manager table (VTSI_MAT) 98 and the video title set program chain information table (VTS_PGCIT) 100 shown in FIG. 12 will be described with reference to FIGS.
This will be described with reference to 0.

FIG. 13 shows the description contents of the video title information manager table (VTSI_MAT) 98. In this table (VTIS_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), the attribute (VTS_CAT) of the title set 72 is described. Also, this table (VTSI_MAT)
In 98, the start address (VTSM_VOBS_SA) of the video object set (VTSM_VOBS) 95 of the VTS menu (VTSM) is described in a relative logical block (RLBN) from the head logical block of the video title set (VTS) 72, and the video is set. The start address (VTSTT_VOB_S) of the video object for the title in the title set (VTS)
A) is described by a relative logical block (RLBN) from the head logical block of this video title set (VTS) 72.

Further, this table (VTSI_MAT)
A video title set information management table (V
TI_MAT) 94 end address (VTI_MAT_
EA) is described by the relative number of blocks from the first byte of the table (VTI_MAT), and the video title set direct access pointer table (VTS_DA).
PT) 99 start address (VTS_DAPT_S
A) is described by the number of relative blocks from the first byte of the video title set information (VTSI) 94.

Furthermore, this table (VTSI_MA
T) 98, the start address (VTS_PGCIT_SA) of the video title set program chain information table (PGCIT) 100 is described as the relative number of blocks from the first byte of the video title set information (VTSI) 94. The video title set (VTS) The start address (VTS_MAPT_SA) of the time search map (VTS_MAPT) 101 is described by the relative logical sector from the head logical sector of the video title set (VTS) 72. This table (VTSI_
MAT) 98 includes video title set (VTS) 7
Video object set (VTSM_VOBS) 9 for video title set menu (VTSM) in 2
5 and the title (VTS) of the video title set (VTS)
Video Object Set (VTST) for TSTT
_VOBS) 96 video attributes (VTS_V_ATR)
And the number of audio streams (VTS_AST_Ns) of the video object set (VTSTT_VOBS) 96 for the title (VTSTT) of the video title set in this video title set (VTS) 72.

Here, the video attribute (VTS_V_AT
R) describes the compression mode of video, the frame rate of the TV system, the aspect ratio of the display when displaying on the display device, and the like.

The table (VTSI_MAT) 98 contains
Video object set (VTST_VOBS) 9 for the title (VTSTT) of the video title set (VTS) 72 in the video title set (VTS) 72
6 audio stream attributes (VTS_AST_AT
R) is described. This attribute (VTS_AST_A
TR) describes an audio encoding mode that describes how audio was encoded, the number of bits used for audio quantization, the number of audio channels, and the like. Furthermore, the table (VTSI_MAT) 98
Describes the number of sub-picture streams (VTS_SPST_Ns) of the video object set (VTST_VOBS) 96 for this title (VTSTT) in the video title set (VTS) 72 and the attribute (VTS_SPST_ATR) of each sub-picture stream. There is.
Attributes of each sub-picture stream (VTS_SPST_A
In (TR), the encoding mode of the sub-picture, the display type of the sub-picture, etc. are described.

Also, this table (VTSI_MAT)
98 has a video title set menu (VTSM)
Number of audio streams (VTSM_AST_N
s), audio stream attribute (VTSM_AST_
ATR), the number of sub-picture streams (VTSM_SPST)
_Ns) and the attribute of the sub-picture stream (VTSM_S
(PST_ATR) is described.

The VTS program chain information table (VTS_PGCIT) 100 has a structure as shown in FIG. This information table (VTS_PGC
The IT 100 has a VTS program chain (VTS
_PGC) information (VTS_PGCI) is described, and the first item is the VTS program chain (VT
S_PGC) information table (VTS_PGCI)
T) 100 information (VTS_PGCIT_I) 102 is provided. This information (VTS_PGCIT_I)
102, this information table (VTS_PGCI
T) 100, this information table (VTS_PGCI
T) VTS program chain (VTS_P in 100)
VTS_PGCI searching VTS program chain (VTS_PGC) for the number of (GC) (# 1 to #n)
Search pointer (VTS_PGCIT_SRP) 103
Is provided, and finally the VTS program chain (VTS
_PGC) corresponding to each VTS (# 1 to #n)
Information (VTS_PGCI) 104 regarding the program chain (VTS_PGC) 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. 16, the VTS_PGCIT search pointer (VTS_PGCIT_SRP) 103 has an attribute (VTS_PC) 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 (PG
C) is described before the program chain (PGC) that is not the entry program chain (PGC).

PGC information (V
In TS_PGCI) 104, four items are described as shown in FIG. This PGC information (VTS_PG
In the CI) 104, the program chain general information (PGC_GI) 105 that is an indispensable item is described first, and then at least three items 106, 107, and 108 that are indispensable items only when there is a video object are described. Has been done. That is, the program chain program map (PGC_PGMAP) 1 as the three items
06, the cell playback information table (C_PBIT) 107 and the cell position information table (C_POSIT) 108 are set to P.
It is described in the GC information (VTS_PGCI) 104.

Program chain general information (PGC_G
In I) 105, as shown in FIG. 18, 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. In the content of PGC (PGC_CNT), the configuration content of this program chain, that is, the number of programs, the number of cells, and the number of angles in this program chain are described. Playback time of PGC (PGC_PB_TIM
In E), the total reproduction time of the program in this PGC is described. This reproduction time describes the reproduction time of the program when the program in the PGC is continuously reproduced regardless of the reproduction procedure.

The program chain general information (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 is a cell reproduction information table (C_PBIT) 10
The start address (C_PBIT_SA) of No. 7 and the start address (C_POSIT_SA) of the cell position information table (C_POSIT) 108 are described.
Any start address (C_PBIT_SA and C
_POSIT_SA is also VTS_PGC information (VTS_SA).
It is described by the number of logical blocks relative to the first byte of (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. 19 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
In IT), a cell category (C_CAT) is described as shown in FIG. This cell category (C
_CAT) is 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 a cell block, the cell is not part of the block, or Cell block type that indicates whether it is an angle block, system time clock (ST
An STC discontinuity flag indicating whether resetting in C) is necessary or not is described.

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.

Further, as shown in FIG. 22, the cell reproduction information table (C_PBIT) 107 includes a cell reproduction time (C_PBTM) describing the total reproduction time of the PGC. If the angle cell block is in the PGC,
The playback time of the angle cell number 1 represents the playback time of the angle block. Further, in the cell reproduction information table (C_PBIT) 107, the head video object unit (VOBU) in the cell is indicated by the number of logical sectors relative to the head logical sector of the video object unit (VOBU) 85 in which the cell is recorded. 85 start address (C_FVOBU_SA) is described,
Also, the start address (C_LVO) of the last video object unit (VOBU) 85 in the cell is determined 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.
BU_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. 23, 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. The cell position information (C_POSI) includes
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.

The 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. 25, the NV pack 86 includes two packets as a pack header 110, a system header 111 and navigation data, that is, a reproduction control information (PCI) packet 116 and a data search information (DSI) packet 11.
The number of bytes as shown in FIG. 25 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 87, the NV pack 86 is arranged at the head of the object unit including the audio pack 91 and / or the sub-picture pack 90. As described above, 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 87.

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 pack 87, audio pack 91, sub-picture pack 90, computer data pack 8
As shown in FIG. 26, 8 is composed of a pack header 120, a packet header 121, and a packet 122 in which corresponding data is stored, as defined by the MPEG2 system layer, and its pack length is set to 2048 bytes. Has been. Each of these packs is aligned with a logical block boundary.

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 is described as shown in FIG. P
In the CI general information (PCI_GI), as shown in FIG. 28, the PCI11 is the relative logical block number from the logical sector of the VOBU85 in which the PCI113 is recorded.
The address (NV_PCK_LBN) of the NV pack (NV_PCK) 86 in which 3 is recorded is described.
The PCI general information (PCI_GI) contains VOBU.
85 categories (VOBU_CAT), VOBU85
Start PTS (VOBU_SPTS) and end PT
S (VOBU_EPTS) is described. here,
Start PTS of VOBU85 (VOBU_SPTS)
Indicates the reproduction start time (start presentation time stamp (SPTS)) of the video data in the VOBU 85 including the PCI 113. This reproduction start time is the first reproduction start time in the VOBU 85. Usually, the first picture corresponds to the reproduction start time of an I picture (Intra-Picture) in the MPEG standard. End PTS of VOBU85 (VOBU_EP
TS) indicates the reproduction end time (end presentation time stamp: EPTS) of the VOBU 85 including the PCI 113.

D of the DSI packet 117 shown in FIG.
The SI data (DSI) 115 is a VOB unit (VO
BU) 85 is navigation data for executing a search. FIG. 29 shows the DSI data (DSI) 115.
DSI general information (DSI_GI), VOB
U search information (VOBU_SI) and synchronous reproduction information (SYNCI) are described.

The DSI general information (DSI_GI) describes the information of the entire DSI 115. That is, FIG.
As shown in 0, the DSI general information (DSI_GI) includes
System time reference reference value of NV pack 86 (NV_PC
K_SCR) is described. The system time reference value (NV_PCK_SCR) is stored in the system time clock (STC) incorporated in each unit shown in FIG. 1, and the video, audio and sub-picture packs are stored as video, audio and sub-picture on the basis of this STC. The video and audio are decoded by the decoder units 58, 60 and 62, and reproduced on the monitor unit 6 and the speaker unit 8. In the DSI general information (DSI_GI), the start of the NV pack (NV_PCK) 86 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 the DSI 115 is recorded. Address (NV_PCK_LBN) is described and VO
The address (VOBU_EA) of the last pack in the VOB unit (VOBU) 85 in which the DSI 115 is recorded is described with the relative logical sector number (RLSN) from the first logical sector of the B unit (VOBU).

Further, 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.

Search information of VOBU85 (VOBU_S
In I), information for specifying the head address in the cell is described.

The synchronization information (SYNCI) contains DSI11.
Address information of sub video and audio data to be reproduced in synchronization with the reproduction start time of the video data of the VOB unit (VOBU) including 5 is described. That is, FIG.
, The relative number of logical sectors from the NV pack (NV_PCK) 86 in which the DSI 115 is recorded (R
LSN) target audio pack (A_PCK)
The 91 start address (A_SYNCA) is described. When there are a plurality of audio streams (maximum 8), synchronization information (SYNCI) is described by that number.
Also, in the synchronization information (SYNCI), the address (SP_SYNCA) of the NV pack (NV_PCK) 86 of the VOB unit (VOBU) 85 including the target audio pack (SP_PCK) 91 is recorded in the NV pack (NV_PCK). ) 86 relative logical sector number (RLSN). When there are a plurality of sub-picture streams (maximum 32), synchronization information (SYNCI) is described by that number.

The pack length of the pack is adjusted to be 2048 bytes (1 logical sector). If the pack length is less than 2048 bytes, and the number of bytes that is less than 6 bytes is 6 bytes or less, adjust the pack length by adding the stuffing byte in the pack header, and if it is 7 bytes or more, the stuffing byte is 1 byte. The pack length is adjusted by adding a padding packet corresponding to the number of insufficient bytes to the packet.

The pack header is a 4-byte pack start code (000001BAh) and a 6-byte SCR.
(System clock reference, system time reference reference value), 3-byte multiplexing rate (MUX rate; 04)
68A8h) composed of 1 byte to 7 bytes of stuffing byte (00h). The packet is composed of 2034 bytes as a standard, and a padding packet for pack length adjustment (effective data 00h that does not make sense as data is recorded in each byte unit) is provided in this packet as needed. It has become.

That is, as shown in FIG. 32, when the data length forming a packet is 2034 bytes to 2028 bytes, stuffing bytes are added (inserted) in the pack header by the number of the insufficient bytes.

Further, as shown in FIG. 33, when the data length of the packet is 2027 bytes or less, padding packets corresponding to the insufficient number of bytes are added.

For example, the packing of video data will be described.

That is, as shown in FIG. 34, when video data having a data length of 2015 bytes is packed,
The standard number of bytes (2034 bytes) of one packet is compared with the number of bytes (2021 bytes) obtained by adding the packet header of 6 bytes to the number of bytes (2015 bytes) of the video data, and the calculation of the lack of 13 bytes by this comparison Therefore, it is determined that a 13-byte padding packet is added,
1 for normal 14-byte pack header with 1 stuffing byte and 2021-byte video packet
A 2048-byte pack is formed by a 2034-byte packet added with a 3-byte padding packet.

Further, as shown in FIG. 35, the data length is 2
When packing 025 bytes of video data, compare the standard number of bytes (2034 bytes) of one packet with the number of bytes (2025 bytes) of that video data plus the packet header of 6 bytes (2031 bytes) However, by calculating the shortage of 3 bytes by this comparison, 3
It is judged that the stuffing byte of the byte is added, and the pack header of 17 bytes that adds the stuffing byte of 3 bytes in addition to the stuffing byte of 1 byte, and 2
The 031 byte video packet forms a 2048 byte pack.

Next, each pack will be described in detail.

The NV pack 86, as shown in FIG.
It is placed immediately before the video pack including the head data of one GOP, and has a 14-byte pack header 1.
10 and 24-byte system header 111, 986
It is composed of a PCI packet 116 within 1 byte and a DSI packet 117 within 1024 bytes. P
The CI packet 116 has a 6-byte packet header 11
2 and 1-byte substream ID 118 and a data area 113 capable of storing 979-byte PCI data. The DSI packet 117 includes a 6-byte packet header 114 and a 1-byte substream ID 1.
The data area 115 can store 19 and 1017 bytes of DSI data.

The pack header 110, as described above,
4-byte pack start code (000001BA
h), 6-byte SCR (system clock reference, system time reference reference value), 3-byte multiplexing rate (MUX rate; 0468A8h), 1 byte to 7 bytes of stuffing byte (00h).

The system header 111 consists of a 4-byte system header start code (000001BBh) and 2 bytes.
It is composed of a header length in bytes.

The packet headers 112 and 114 each have a 3-byte packet start code (000001).
h) 1-byte stream ID (10111111)
b: Private stream 2) 2-byte PES
(Packetized Elementary Stream) This is composed of packet length.

A code (00000000b) indicating a PCI stream is added to the substream ID 118.

A code (00000001b) indicating a DSI stream is added to the substream ID 119.

The video pack 87 is shown in FIG.
As shown in (b), a 14-byte pack header 120
And a video packet including a 9-byte packet header 121 and a data area 122 capable of storing up to 2025 bytes of video data, or a 19-byte packet header 121 and a data area 122 capable of storing up to 2015 bytes of video data. One pack is composed of video packets. Pack header 12
0 has the same configuration as that of the NV pack 86.

When the packet header 121 is 9 bytes, a 3-byte packet start code (000001)
h) 1-byte stream ID (11100000
b: MPEG video stream), 2-byte PES
(Packetized Elementary Stream) Packet length, 3 bytes of PES data.

When the packet header 121 is 19 bytes, in addition to the above 9 bytes, a PTS (Presenta of 5 bytes)
tion Time Stamp; reproduction output time management information) and 5-byte DTS (Decoding Time Stamp; decoding time management information) are additionally configured. This PTS and DTS
Is described only in the video packet including the data at the beginning of the I picture in the video stream.

The audio pack 91 is a Dolby AC3
In the case of compliant compression encoded data, as shown in (a) of FIG. 37, a 14-byte pack header 120, a 14-byte packet header 121, a 1-byte substream ID 131, and the number of audio frames in the packet data. 1-byte frame number 132 indicating 1 byte and 1-byte first access unit pointer 1 indicating the position of the beginning of the first audio frame in the packet data
One pack is composed of audio packets including a data area 134 capable of storing audio data of up to 33 bytes and 2016 bytes. Pack header 12
0 has the same configuration as that of the NV pack 86. When the packet header 121 does not include PTS, the packet header 121 has a 9-byte configuration, and the data area 134 in which audio data can be stored is expanded to 2021 bytes.

In the case of the linear PCM encoded data, the audio pack 91 is set to 1 as shown in FIG. 37 (b).
A 4-byte pack header 120, a 14-byte packet header 121, and a 1-byte substream ID 131
And 1 indicating the number of audio frames in the packet data
Audio data information 135 of 3-byte structure in which the number of frames 132 of byte structure, the first access unit pointer 133 of 2-byte structure indicating the position of the beginning of the audio frame in the packet data, and the information of the audio data in the packet data are described.
And an audio packet consisting of a data area 134 that can store up to 2013 bytes of audio data.
One pack is made up. The pack header 120 is
The configuration is the same as that of the NV pack 86. When the PTS is not included in the packet header 121, the packet header 121 has a 9-byte configuration, and the data area 134 capable of storing audio data is expanded to 2018 bytes.

As the audio data information of the audio data information, a frame number, a processing unit in which the length of one data is 16 bits long, 20 bits long or 24 bits long, a sampling frequency and the like are described.

The packet header 121 includes a 3-byte packet start code (000001h), a 1-byte stream ID (10111101b: private stream 1), and a 2-byte PES (Packetized Elementar).
y Stream) packet length, PES content of 3 bytes, PTS (Presentation Time Stamp; time management information of reproduction output) of 5 bytes.

Sub-stream I added when audio data is compression encoded data compliant with Dolby AC3
D131 is a code (100
00xxxxxxb: xxx is a stream number).

When the audio data is linear PCM, the sub stream ID 131 is a linear PC.
Code indicating M stream (10100 ××× b: ××
A stream number) is attached to the symbol x.

One frame of audio data is composed of, for example, a frame header of 4 bytes and audio data of 772 bytes of 4 bytes each on the left and right of 0 to 191.

As shown in FIG. 38, the sub-picture pack 90 has a 14-byte pack header 120, a 14-byte packet header 121, and a 1-byte substream ID.
One pack is composed of sub-picture packets composed of 141 and a data area 142 capable of storing sub-picture data of up to 2019 bytes. P in the packet header 121
When the TS is not included, the packet header 121 has a 9-byte structure, and the data area 1 in which sub-picture data can be stored
42 expands to 2024 bytes. Pack header 120
Has the same configuration as that of the NV pack 86.

The substream ID 141 has a code (001 ××××× b: ××××) indicating a sub video stream.
X stream number) is given.

The packet header 121 includes a 3-byte packet start code (000001h), a 1-byte stream ID (10111101b: private stream 1), and a 2-byte PES (Packetized Element).
ary stream) packet length, data related to PES of 3 bytes, PTS (Presentation Time Stamp) of 5 bytes;
Reproduction output time management information). This PTS is described only in the sub-picture packet including the head data of each sub-picture unit.

The computer data pack 88 is shown in FIG.
As shown in, the 14-byte pack header 120 and 1
4-byte packet header 121, 1-byte substream ID 151, and 2-byte computer environment information 1
One pack is composed of a packet including a data area 153 capable of storing computer data of up to 52 bytes and 2017 bytes. PTS in packet header 121
If is not included, the packet header 121 has a 9-byte configuration, and the data area 153 capable of storing computer data is expanded to 2022 bytes. Pack header 12
0 has the same configuration as that of the NV pack 86.

As the computer environment information 152, the used CPU and the used OS are described. For example, as shown in FIG. 40, four types can be selected, the CPU used is “CPU1” and the OS used is “OS1”.
In this case, "0110 (h)" is described, and when the CPU used is "CPU1" and the OS used is "OS2", "011" is written.
1 (h) "is described, the used CPU is" CPU2 "and the used OS is" OS3 "," 1002 (h) "is described, the used CPU is" CPU1 "and the used OS is" OS ".
In the case of "3", "0102 (h)" is described.

A code (11000000b) indicating a computer stream is added to the substream ID.

The packet header 121 includes a 3-byte packet start code (000001h), a 1-byte stream ID (10111101b: private stream 1), and a 2-byte PES (Packetized Element).
ary stream) packet length, data related to PES of 3 bytes, PTS (Presentation Time Stamp) of 5 bytes;
Reproduction output time management information). This PTS is described only in the computer data packet including the head data of each computer data stream.

The SCR described in each pack is such that the value of the head pack for each video title set is 0 and the SCR increases in ascending order in the order of recording on the optical disc 10. As shown in FIG. 41, the stream ID described in the packet header 121 of each pack is “10.
In the case of "111100", the program stream map is shown, in the case of "10111101", the private stream 1 is shown, in the case of "10111110", the padding stream (dummy data) is shown, and "10111".
"111" indicates private stream 2
In the case of “110 ××××”, it indicates an MPEG audio stream (××××; stream number), and “11
10 ×××× ”, the MPEG video stream (×
Xxxx; stream number), "1111000
"0" indicates an entitlement (license) control message, "111110010" indicates an entitlement (license) management message, and "11110".
010 ”indicates a DSM control command,
In the case of "11111111", it indicates the program stream directory.

Substream IDs 131, 141 and 151 described in the packets of the audio pack 91, sub-picture pack 90 and computer data pack 88.
42 corresponds to the private stream 1 and, as shown in FIG. 42, in the case of "10100XXX", it indicates a linear PCM audio stream, and "XXX" is the stream number, and "001XXXXX" In the case of “”, the sub-picture stream is indicated, and “XXXXX” is the stream number, in the case of “11000000”, the computer data stream is indicated, and in the case of “10000XXX”,
Shows the Dolby AC3 audio stream and its "x
"XX" is the stream number.

Substream ID 11 described in the PCI packet and DSI packet in the NV pack 87
8 and 119 correspond to the private stream 2, and as shown in FIG. 43, in the case of “00000000”, the PC
Indicates the I stream, and if "00000001", D
The SI stream is shown.

Next, the linear audio data pack 9
A specific example of the configuration 1 will be described with reference to FIG.

That is, "10111101" indicating the private stream 1 is described as the stream ID in the packet header 121, and the substream ID
"10100011" indicating a linear PCM audio stream is described as 131, "3" is described as the stream number, and "01DB (h)" is described as the first access unit pointer 133.
In the data area 134 in the packet, the remaining data (472 bytes) of the previous frame and the two frame data (1
(Frame 772 bytes configuration) is stored.

Next, a specific example of the structure of the computer data pack 88 will be described with reference to FIG.

That is, "10111101" indicating the private stream 1 is described as the stream ID in the packet header 121, and the substream ID
“1” indicating a computer data stream as 151
1,000,000 "is described and computer environment information 1
As 52, the CPU used is “CPU1” and the OS used is “O”
“0111 (h)” indicating “S2” is described. Computer data is stored in the data area 153 in the packet.

Next, a specific example of the structure of the sub-picture data pack 90 will be described with reference to FIG.

That is, "10111101" indicating the private stream 1 is described as the stream ID in the packet header 121, and the substream ID
A sub-picture stream denoted by reference numeral 141 is “00101010.
“1” is described and the stream number is “5”. The sub-picture data of up to 2019 bytes is stored in the data area 142 in the packet.

The system processor section 54 has a packet transfer processing section 200 for judging the packet type and transferring the data in the packet to each decoder. As shown in FIG. 47, the packet transfer processing unit 200 includes a memory interface unit (memory I / F unit) 2
01, a stuffing length detection unit 202, a pack header end address calculation unit 203, a pack type determination unit 204, a packet data transfer control unit 205, and a decoder interface unit (decoder I / F unit) 206.

The memory I / F unit 201 uses the data bus to store the pack data from the data RAM unit 56 through the stuffing length detection unit 202, the pack type determination unit 204, the packet data transfer control unit 205, and the decoder I / F unit 2.
The data is output to 06.

The stuffing length detection unit 202 detects how many bytes the stuffing length in the pack header 120 in the pack data supplied from the memory I / F unit 201 is, and the detection result is the pack header. It is output to the end address calculation unit 203.

Pack header end address calculation unit 203
Calculates the pack header end address based on the stuffing length supplied from the stuffing length detection unit 202. The calculation result is the pack type determination unit 20.
4 and the packet data transfer control unit 205.

The pack type discriminating unit 204 is supplied next to the address in the pack data supplied from the memory I / F unit 201a according to the pack header end address supplied from the pack header end address calculating unit 203. Video pack 8 depending on the contents of 4 bytes
7, the audio pack 91, the sub-picture pack 90, the NV pack 86, and the computer data pack 88 are discriminated, and the discrimination result is output to the packet data transfer control unit 205.

That is, when the 1-byte stream ID indicating the private stream 2 is supplied, it is determined to be the NV pack 86, the 1-byte stream ID indicating the video stream is determined to be the video pack 87, and the private stream 1 is indicated. 1-byte stream ID
Thus, the audio pack 91, the sub-picture pack 90 or the computer data pack 88 is discriminated.

When the audio pack 91, sub-picture pack 90 or computer data pack 88 is discriminated, the sub-stream ID following the packet header 121
131, 141, 151 determine whether the audio stream is a Dolby AC3 audio stream, a linear audio stream, a sub-picture stream, or a computer data stream.

For example, as shown in FIG. 42, "101
00XXXXX "(XXXXX; stream number), it is determined to be a linear audio stream, and" 10000XX
× ”(× XXX; stream number), Dolby AC
It is determined that there are three audio streams, and "001 ××××
In the case of "x"(xxxxxxx; stream number), it is determined to be a sub-picture stream, and in the case of "11000000", it is determined to be a computer data stream.

The packet data transfer control unit 205 determines the transfer destination and the packet start according to the pack header end address supplied from the pack header end address calculation unit 203 and the pack type determination result supplied from the pack type determination unit 204. The address is determined, and further the packet length in the packet header 121 of the supplied pack data is determined. Further, the packet data transfer control unit 2
Reference numeral 05 supplies a signal indicating a transfer destination as a transfer control signal to the decoder I / F unit 206, and supplies a packet end address to a packet end address to the memory I / F unit 201.

The decoder I / F unit 206 is controlled by the packet data transfer control unit 205 from the memory I / F unit 201 according to the transfer control signal supplied from the packet data transfer control unit 205, and is supplied by the packet header. Video data, audio data, and sub-picture data as packet data including 121 are output to the corresponding decoder units 58, 60, 62, and navigation data and computer data as packet data are output to the data RAM unit 56. It is a thing.

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, the system ROM and RAM
The system CPU unit 50 reads the initial operation program from 52 and operates the disk drive unit 30. Therefore, the disk drive unit 30 has the lead-in area 27.
The read operation is started from, and the volume and file structure area 70 that follows the lead-in area 27 and defines the volume and file structure based on ISO-9660 is read. That is, the system CPU unit 50 is configured to store the volume and file structure area 7 recorded at a predetermined position of the optical disc 10 set in the disc drive unit 30.
In order to read 0, a read command is given to the disk drive unit 30, the contents of the volume and file structure area 70 are read, and temporarily stored in the data RAM unit 56 via the system processor unit 54. System CPU section 50
Extracts the management information such as the recording position, recording capacity, size, etc. of each file and other information necessary for management via the path table and the directory record stored in the data RAM unit 56, and the system ROM & RAM
It is transferred to a predetermined place in the 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 acquire 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. This video manager 71
The video manager information management table (VMGI_MAT) 78, which is the first table of the above, is searched. By this search, the video manager menu (VMG
Video object set (VMGM_VO)
BS) 76 start address (VMGM_VOBS_S
A) is acquired and the video object set (VMGM)
_VOBS) 76 is played. Regarding the reproduction of the video object set (VMGM_VOBS) 76 for this menu, the video object set (VTSM_V) for the title in the video title set (VTS)
Since it is the same as that of OBS), its reproducing procedure is omitted. This video object set (VMGM_VOBS) 7
When the language is set in step 6, or when there is no video manager menu (VMGM), the volume manager information management table (VMGI_MAT) is searched and the title set search pointer table (TT
_SRPT) 79 start address (TT_SRPT_S
A) is searched.

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.

The system CPU section 50 uses the information management table (V) of the video manager information (VMGI) 75.
MGI_MAT) 78, the number of streams of video, audio, and sub-picture for the video manager menu described in MGI_MAT) and their respective attribute information are acquired, and based on the attribute information,
Each video decoder unit 58 and audio decoder unit 6
0 and the parameter for reproducing the video manager menu is set in the sub-picture decoder unit 62.

Next, from the start address (VTS_SA) of the video title set 72 shown in FIG. 11, the video title set information (VTSI) 94 of that title set is obtained as shown in FIG. From the management table (VTSI_MAT) 98 of the video title set information 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 and the number of streams of audio and sub-picture data (VTS_AST_Ns, VTS_SP)
ST_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.

Further, 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).
13 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 unit 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) shown in FIG. 15 and the end address (VTS_PGCIT_EA) of the table 100 are acquired.

When the number of the program chain is designated on the key operation / display section 4, the VTS_PGCIT search pointer (VTS_PGC shown in FIG. 14 corresponding to the number is designated.
IT_SRP) 103 to its program chain category shown in FIG. 16 and its search pointer (VTS)
_PGCIT_SRP) 103 corresponding VTS_PG
The start address of the C information 104 is acquired. With this start address (VTS_PGCI_SA), 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. 23 to the video object identifier (C_POSI) shown in FIG.
VOB_IDN) and cell identification number (C_IDN) are obtained.

In addition, the start address (C_POSIT
_SA) to cell reproduction information (C_PBI) shown in FIG. 21.
2 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 reproduction processing unit 64 converts the signal to reproduce the image on the monitor unit 6 and reproduces the sound from the speaker unit 8.

Further, normal reproduction of video data using the navigation pack 86 will be described in more detail with reference to a flowchart.

In the normal reproduction of the video data, when the normal reproduction is started as shown in FIG. 48, step S1
After the start shown in FIG. 1, the video manager information (VMGI) 75 is added to the system CPU section 50 as already described.
And is stored in the system ROM / RAM section 52 (step S12). Similarly, the video title set information (VTSI) 94 of the video title set (VTS) 72 is read based on the video manager information (VMGI) 75, and the video title set menu displays the video object set (VTS) 94.
It is displayed on the monitor unit 6 by using TSM_VOBS) 95. Based on this display, the user determines the title set 72 to be reproduced, reproduction conditions, etc. as shown in step S13. When the determined title set 72 is selected using the key operation / display unit 4, the program chain information table (VTS_PGCI shown in FIG. 12 in the selected title set 72 is shown in step S14.
T) 100 to the data of the cell reproduction information table (C_PBIT) 107 shown in FIGS. 17, 21, and 22 is read by the system CPU unit 50 and stored in the system ROM / RAM unit 52.

The system CPU section 50 operates in step S15.
As shown in, the program chain number (V that starts playback according to the playback conditions input from the key operation / display unit 4
TS_PGC_Ns), angle number (ANGNs),
The audio stream number and the sub-picture stream number are determined. For example, the 11th match of Boxing World Champion was selected as the title of the program chain, and it was decided to display Japanese subtitles as a sub-picture based on the English narration. In addition, the user makes a selection such as deciding an image in which the battle between the two can be viewed well as the angle. The determined sub-picture number and audio stream number are determined in step S1.
As shown in FIG. 6, the register 5 of the system processor unit 54
4B is set. Similarly, the reproduction start time is the system time clock (STC) 54A, 58A, 60A, 6 of the system processor unit 54, the video decoder unit 58, the audio decoder unit 60, and the sub-picture decoder unit 62.
Set to 2A. The start address and PGC number of the first VOBU in the cell as the start address, that is, the cell number is the system ROM / RAM unit 52.
Stored in.

As shown in step S17, when the video title set is ready for reading, a read command is given from the system CPU section 50 to the disk drive section 30, and the optical disk 10 is read by the disk drive section 30 based on the above-mentioned start address. Seek by.
By this read command, the cells related to the designated program chain (PGC) are sequentially read from the optical disc 10 and sent to the data RAM unit 56 via the system CPU unit 50 and the system processing unit 54. As shown in FIG. 6, the sent cell data is stored in the data RAM section 5 from the navigation pack 86 which is the first pack of the video object unit (VOBU) 85.
6 is stored. After that, the video pack 87 and audio pack 9 of the video object unit (VOBU)
1, a sub-picture pack 90 and a computer data pack 88 are respectively a video decoder section 58, an audio decoder section 60, a sub-picture decoder section 62 and a data RAM section 56.
The data is distributed to the D / A and data reproduction unit 64 after being decoded by the respective decoders. As a result, the monitor unit 6
The video signal is sent to, the audio signal is sent to the speaker unit 8, the display of the video accompanied by the sub video is started, and the reproduction of the sound is started.

The contents of the computer data pack 88 are stored in the work area of the system CPU section 50 in the data RAM section 56.

As a result, the system CPU section 50 executes another process by using the program data as the computer data, and the system ROM / RAM section 52.
It is supposed to launch another program in.

For example, when a Sugoroku game is played in the middle of a video, the program of the simple Sugoroku game is not recorded in the system ROM / RAM section 52 and is read as computer data as described above. It is supposed to be.

The system ROM / RA can be read by being read as computer data as described above.
A predetermined program recorded in the M section 52 is activated.

During the reproduction of such video and audio, if there is an interrupt process from the key operation / display unit 4, the obtained key data is stored in the system RAM / R.
It is stored in the OM unit 52. If there is no key data,
It is checked whether there is a reproduction end interrupt from the drive unit. If there is no playback end interrupt,
The transfer of the navigation pack 86 is awaited. When the transfer of the navigation pack 86 is completed, the logical sector number (N
Set V_PCK_LSN to the current logical block number (NO
WLBN) and is stored in the system RAM / ROM unit 52.

When the transfer of the NV pack 86 is completed, the last NV pack 86 in the cell is checked. That is, it is checked whether it is the final navigation pack 86 in the cell 84. This check is performed by C_L of the cell reproduction information table (C_PBI) 107 shown in FIG.
Start address of VOBU (C_LVOBU_SA)
And the address of the navigation pack 86 (V_PCK_
Checked by comparing LBN). NV
If the pack 86 is final in cell 84, then it is checked if there is a change in angle. The angle can be changed from the key operation / display unit 4 to the system CPU unit 50.
It is judged based on whether or not there is an input for changing the angle. If the angle is not changed, it is checked whether the cell 84 is the last cell of the program chain (PGC) to which it belongs. This check is performed in FIG. 17 and FIG.
The cell 84 shown in FIG.
IT) 107 final cell.
That is, it is checked by the number of cells constituting the program chain and the identification number of the reproduced cell.

If the reproduction has ended, or if there is no program chain to be reproduced next, step S1.
As shown in FIG. 8, general information of PCI 113 (PCI-G
End PTS (VOBU_EPTS) described in I)
Is referred to, and this end PTS (VOBU_EPTS)
Is in agreement with the system time clock (STC), the display of the screen of the monitor 6 is stopped as shown in step 19, and the system CPU gives a data transfer stop command to the disk drive unit 30 as shown in step S20. The data transfer is stopped and the reproducing operation is ended.

Next, regarding the transfer processing of each of the above packs,
This will be described with reference to the flowchart shown in FIG.

That is, the system CPU section 50 transfers the read command and the logical sector address of the pack to be reproduced to the disk drive section 30 (step S31).

Then, the disk drive unit 30 seeks the target address (step S32).

Then, the disk drive unit 30 performs error correction on the data of the target address and transfers the main data portion in the logical sector data to the system processor unit 54 (step S33).

The system processor section 54 stores the read data of the logical sector in the data RAM section 56 (step S34).

The system processor section 54 uses the data RA
The pack headers 110 and 120 are read from the beginning of the data of the logical sector stored in the M section 56, and the SCR
(System time reference value) is saved (step S3)
5).

At this time, since the head of the logical sector and the head of the pack data coincide with each other, data can be taken out easily.

Then, the system processor unit 54 compares its own PTS with the SCR of each of the stored packs, and determines the pack corresponding to the SCR reaching the PTS, that is, the pack to be reproduced and output, and the determined pack data. From the data RAM unit 56, and the packet transfer processing unit 2
The type of data is discriminated at 00, and the data is transferred to the decoder units 58, 60, 62 or the data RAM unit 56 according to the discriminated type (step S36).

Then, each of the decoder units 58, 60 and 62 decodes the data according to the respective data format and the encoding method set above and sends it to the D / A & reproduction processing unit 64. The D / A & reproduction processing unit 64 converts the digital signal of the decoded result of the video data into an analog signal, and then performs frame rate processing, aspect processing, pan scan processing, etc. according to the conditions set above, and the monitor unit 6 Is output. D / A & reproduction processing unit 64
Then, after the decoding result of the audio data is converted into an analog signal from the digital signal according to the above set conditions, the D / A & reproduction processing section 64 performs mixing processing according to the above set conditions and outputs it to the speaker section 8. It The D / A & reproduction processing unit 64 converts the digital signal of the decoding result of the sub-picture data into an analog signal,
It is output to the monitor unit 6 (step S37).

When the program data as computer data is supplied, the data RAM section 56 records the data together with the CPU type and the computer environment type indicating the OS used, and the system CPU section 50 stores the computer environment type and the computer environment type. Output the data.

Until the reproduction is completed, the above S33 to S37 are performed.
Is repeated.

Next, the processing of the packet transfer processing section 200 will be described.

That is, the pack data read from the data RAM section 56 is transferred through the memory I / F section 201 to the stuffing length detecting section 202, pack type determining section 204,
Packet data transfer control unit 205 and decoder I /
It is supplied to the F unit 206 (step S41).

As a result, the stuffing length detector 20
2, the stuffing length is detected, and data indicating the stuffing length is output to the pack header end address calculating unit 203 (step S42).

The pack header end address calculation unit 203 calculates the pack header end address from the supplied stuffing length, and this pack header end address is the pack type determination unit 204 and the packet data transfer control unit 20.
5 is supplied (step S43).

The pack type discriminating unit 204 determines the NV pack 86, the video pack 87, and the audio pack of the Dolby AC3 according to the contents of 4 to 6 bytes of data supplied next to the supplied pack header end address. 91, linear PCM audio pack 9
1, sub-picture pack 90, computer data pack 88
It is determined which of the above is the case, and the determination result is supplied to the packet data transfer control unit 205 (step S4).
4).

That is, when the 4-byte system header start code is supplied, it is determined to be the NV pack 86, the packet start code of 3 bytes and the stream ID indicating the 1-byte video stream to determine the video pack 87. Audio pack 91 of Dolby AC3 with a packet start code of bytes and a private stream 1 as a stream ID of 1 byte,
Linear PCM audio pack 91, sub-picture pack 9
0 or the computer data pack 88.

When the stream ID is the private stream 1, the substream IDs (131, 141, 151) following the packet header 121 are "10100."
In the case of "XXX", it is determined as an audio pack of linear PCM, and the stream number is determined by "XXX".

Further, when the stream ID is the private stream 1, the substream IDs (131, 141, 151) following the packet header 121 are "10000."
In the case of “XXX”, it is determined to be an audio pack of Dolby AC3, and the stream number is determined by the “XXX”.

Further, when the stream ID is the private stream 1, the substream IDs (131, 141, 151) following the packet header 121 are "001XX.
In the case of ××× ”, it is determined to be a sub-picture stream and the“ ×
The stream number is determined by "XXXXX".

When the stream ID is the private stream 1, the substream IDs (131, 141, 151) following the packet header 121 are "11000".
In the case of "000", it is determined to be a computer data stream.

[0180] The audio pack 91 of the linear PCM
Alternatively, when the audio pack 91 of the Dolby AC3 is discriminated, the offset byte number indicating the head position of the first frame is discriminated by the 2-byte first access unit pointer 133 following the frame header number 132 after the substream ID 131.

Then, the packet data transfer control unit 205
Is the supplied pack type discrimination result, pack header end address, and first access unit pointer 13
According to 3, the transfer destination and the packet start address are determined, and the packet header 1 of the pack data to be supplied is further determined.
The packet length within 21 is determined. As a result, the packet data transfer control unit 205 supplies a signal indicating the transfer destination as a transfer control signal to the decoder I / F unit 206, and the packet end address to the packet end address are supplied to the memory I / F unit 201. (Step S4
5).

Therefore, substantially effective packet data is transmitted from the memory I / F unit 201 via the data bus.
The data is supplied to the decoder I / F unit 206, and then transferred to the decoders 58, 60, 62 or the data RAM unit 56 as transfer destinations according to the type (step S4).
6).

That is, the packet data of video data is transferred to the decoder 58, the packet data of audio data is transferred to the decoder 60, the packet data of sub-picture data is transferred to the decoder 62, and the packet data of computer data is transferred to the data RAM. It is transferred to the section 56.

At this time, since the pack data is of a constant length, the storage state in the data RAM section 56, that is, the start addresses are at regular intervals, so that the heads of the pack data in the data RAM section 56 are always at the same intervals. Since it is saved, the pack data management does not have to manage the address, but only the pack number.

In the process of determining the type of data, if the data is PCI data and DSI data as NV data indicating the reproduction position of video data, this NV data is used.
The data is not transferred to the decoder and this NV data is
It is stored in the data RAM unit 56. This NV data is
It is referred to by the system CPU unit 50 as necessary and is used when performing special reproduction of video data. At this time, the PCI data and the DSI data are identified by the substream ID given to them.

When the reproduction of one cell is completed, the cell information to be reproduced next is obtained from the cell reproduction order information in the program chain data, and the reproduction is similarly continued. Next, referring to FIG. 50 to FIG. 55, FIG.
The video data in the logical format shown in FIG. 1 and the recording method on the optical disc 10 for reproducing the video data and the recording system to which the recording method is applied will be described.

FIG. 50 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. 50, video data, audio data,
As a source of sub-picture data and computer data, for example, a video tape recorder (VTR) 211,
An audio tape recorder (ATR) 212, a sub picture source 213, and a computer data player 214 are used. These generate video data, audio data, sub-picture data, and computer data under the control of the system controller (Sys con) 215, and these generate video encoder (V
ENC) 216, audio encoder (AENC) 2
17, the sub-picture encoder (SPENC) 218 and the computer data encoder (CENC) 219, and under the control of the system controller (Sys con) 215, these encoders 216, 217, 218, 2
19, A / D converted and encoded by each compression method, and encoded video data, audio data, sub-picture data and computer data (Comp V
ideo, Comp Audio, Comp Sub-pict, Comp computer)
Are stored in the memories 221, 221, 222, and 223.

This video data, audio data, sub-picture data and computer data (Comp Video, Comp
Audio, Comp Sub-pict, Comp computer) is output to the file formatter (FFMT) 224 by the system controller (Sys con) 215, and is converted into the file structure of the video data of this system as described above and each data Management information such as the setting conditions and attributes of the system controller (Sys con
) 215 and stored in the memory 226.

The standard flow of the encoding process in the system controller (Sys con) 215 for creating a file from video data will be described below.

Video data and audio data are encoded according to the flow shown in FIG. 51 and encoded video and audio data (Comp Video, Comp Aud
io) data is created. That is, when the encoding process is started, parameters required for encoding the video data and the audio data are set as shown in step 50 of FIG. Some of the set parameters are set in the system controller (Sys con) 215.
File formatter (FFM
T) 224. As shown in step S51, the video data is pre-encoded using the parameters, and the optimal distribution of the code amount is calculated. Step S52
As shown in, the video encoding is executed 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 S53, a partial re-encoding of the video data is performed and the re-encoded portion of the video data is replaced. Video data and audio data are encoded by this series of steps.

In addition, as shown in steps S54 and S55, the sub-picture data is encoded to generate encoded sub-picture data (Comp Sub-pict). That is, the parameters necessary for encoding the sub-picture data are similarly set. Some of the parameters set as shown in step S54 are
) 215 and is stored in the file formatter (FFM
T) 224. The sub-picture data is encoded based on this parameter. By this processing, the sub-picture data is encoded.

Further, as shown in steps S56 and S57, the computer data is encoded and the encoded computer data (Comp computer) is created. That is, the parameters necessary for encoding the data are similarly set. Some of the parameters set as shown in step S56 are set in the system controller (Sy
s con) 215 is stored in the file formatter (F
FMT) 224. Data is encoded by the computer based on this parameter. This process encodes computer data.

According to the flow shown in FIG. 52, encoded video data, audio data, sub-picture data, and computer data (Com Video, Comp Audio,
CompSub-pict, Comp computer) are combined and converted into a title set structure of video data as described with reference to FIGS. 4 and 12. That is, step S61
A cell is set as the minimum unit of video data as shown in, and cell reproduction information (C_PBI) regarding the cell is created. Next, as shown in step S62, the configuration of cells constituting the program chain, video, sub-picture, audio attributes, etc. are set (some of these attribute information is obtained from information obtained when each data is encoded). , And the video title set information management table information (VTSI_MAT) 98 and the video title set time search map table (VTS_MAPT) 10 including the information about the program chain as shown in FIG.
1 is created. At this time, if necessary, the video title set direct access pointer table (VTS_
DAPT) is also created. Next, as shown in step S63, the encoded video data, audio data, sub-picture data, and computer data (Comm Vid
EO, Comp Audio, Comp Sub-pict, Comp computer) is subdivided into a certain pack and can be played back in the order of the time code of each data.
Each data cell is arranged while arranging the pack 86 to form a video object (VOB) composed of a plurality of cells as shown in FIG. 6, and the set of the video objects is formatted into a title set structure.

Note that in the flow shown in FIG. 52, the program chain information uses the database of the system controller (Sys con) 215 in the process of step S62, or re-enters data as necessary. Is executed and is described as program chain information (PGI).

FIG. 53 shows a disc formatter system for recording a title set formatted as described above on an optical disc. As shown in FIG. 53, in the disk formatter system, these file data are stored in the memories 230 and 232 in which the created title set is stored.
MT) 236. The volume formatter (VFMT) 236 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) 236 in the disk formatter (DFM).
T) 238 is added and reconverted into physical data to be recorded on the disc. In the modulator (Modulator) 240, the physical data created by the disk formatter (DFMT) 238 is converted into the recording data to be actually recorded on the disk, and the modulated recording data is recorded by the recorder (Recoder) 242 on the disk 10 Recorded in.

A standard flow for creating the above-mentioned disc will be described with reference to FIGS. 54 and 55. Figure 5
4 shows a flow in which logical data to be recorded on the disk 10 is created. That is, step S80
As shown in, the parameter data such as the number of video data files, the order of arrangement, the size of each video data file, etc. is initially set. Next, the video manager 71 is created from the parameters set as shown in step S81 and the video title set information 81 of each video title set 72. Thereafter, as shown in step S82, the data is arranged in the order of the video manager 71 and the video title set 72 along the corresponding logical block number, and the logical data to be recorded on the disc 10 is created.

Thereafter, a flow for creating physical data to be recorded on the disc as shown in FIG. 55 is executed. That is, as shown in step S83, the logical data is divided into a certain number of bytes, and error correction data is generated. Next, as shown in step S84, the logical data divided into a certain number of bytes and the generated error correction data are combined to create a physical sector. Then, as shown in step S85, physical data is created by combining the physical sectors. In this way, the physical data generated by the flow shown in FIG. 55 is subjected to the modulation processing based on a certain rule, and the recording data is created. Then, this recording data is recorded on the disc 10.

The above-mentioned data structure can be applied not only to the case of recording on a recording medium such as an optical disk and distributing 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 on the provider side such as a broadcasting station is created by the encoding system 320 shown in FIGS. 50 and 53, 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 transferring the video title set 72, the video object sets 95 and 96 are transferred in units of the video object unit 85 shown in FIG. In this video object unit 85, an NV pack 86 in which video reproduction and search information is stored is arranged at the head thereof. Moreover, this NV pack 86
Since the address of the video object unit to be played back and forth based on the video object unit 85 to which the NV pack 86 belongs is written in the field, the video object unit 85 is transferred for some reason during the transfer of the video object unit 85. Even if the video data is missing, the video data can be surely reproduced on the user side by requesting the retransmission of the missing video object unit 85. Further, even if the transfer is not performed in the reproduction order of the video object unit, the system ROM / RAM unit 52 on the user side holds the reproduction information of the correct program chain, and the address data of the NV pack 86 is referred to for the reproduction order. Can be instructed by the system CPU unit 50.

In the above description, the video object unit has been described as a data string including video, audio, sub-picture and computer data, but any one of video, audio, sub-picture and computer data may be included. The audio pack only or the sub-picture pack only may be configured by only the computer data pack.

As described above, data is recorded in the data area of the disc in a hierarchical structure of program chains, programs, cells, and packs, and each pack records a pack header for identifying each pack and a data stream. The packet includes a packet header having at least data indicating a private stream, data indicating the type of the private stream, and packet data corresponding to this type.

As a result, various types of various types of data can be handled.

When the data to be handled is Dolby AC3 audio data or linear PCM audio data, reproduction can be smoothly performed from the middle, and when it is computer data, the usable environment can be easily detected.

In the above-mentioned embodiments, the high density recording type optical disk has been described as the recording medium.
The present invention is directed to a storage medium other than the optical disc, for example,
The present invention can also be applied to a magnetic disk or other physically high-density recordable storage medium.

[0205]

As described above in detail, according to the present invention, a plurality of types of various types of data can be handled.

When the data to be handled is linear audio data, the reproduction from the middle can be smoothly performed,
In the case of computer data, the usable environment can be easily detected.

[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.

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

4 is a diagram showing a structure of a logical format of the optical disc shown in FIG.

5 is a diagram showing 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).

7 is an explanatory diagram showing a structure of the video object unit shown in FIG.

FIG. 8 is a video manager (VMGI) shown in FIG.
Video manager information management table (VMGI_M
The figure which shows the parameter and content of AT).

FIG. 9 is a video manager (VMGI) shown in FIG.
FIG. 3 is a diagram showing the structure of a title search pointer table (TSPT) in FIG.

10 is a diagram showing parameters and contents of information (TSPTI) of the title search pointer table (TSPT) shown in FIG.

11 is a diagram showing 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.

12 is a diagram showing the structure of the video title set shown in FIG.

13 is a diagram showing parameters and contents of a management table (VTSI_MAT) of video title set information of the video title set information (VTSI) shown in FIG.

14 is a diagram showing the structure of a table (VTS_PGCIT) of video title set program chain information of the video title set information (VTSI) shown in FIG.

15 is a diagram showing parameters and contents of information (VTS_PGCITI) in the table (VTS_PGCIT) of the video title set program chain information shown in FIG.

16 is a search pointer (VTS) corresponding to the program chain of the video title set program chain information table (VTS_PGCIT) shown in FIG.
_PGCIT_SRP) parameters and contents.

17 is a diagram showing 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. 14.

FIG. 18 shows the program chain information (V
General information on the program chain of TS_PGCI (P
The figure which shows the parameter and content of GC_GI).

FIG. 19 shows the program chain information (V
TS_PGCI) program chain map (PG
The figure which shows the structure of C_PGMAP).

20 is a diagram showing parameters and contents of an entry cell number (ECELLN) for the program described in the program chain map (PGC_PGMAP) shown in FIG.

FIG. 21 shows the program chain information (V
Cell playback information table (C_PBI) of TS_PGCI)
The figure which shows the structure of T).

FIG. 22 is a cell reproduction information table (C_
The figure which shows the parameter and content of PBIT).

FIG. 23 shows the program chain information (V
The figure which shows the structure of the cell position information (C_POSI) of TS_PGCI.

FIG. 24 is a diagram illustrating the cell position information (C_POS) shown in FIG.
The figure which shows the parameter and content of I).

FIG. 25 is a diagram showing the structure of the navigation pack shown in FIG. 6.

FIG. 26 is a diagram showing the structure of the video, audio, and sub-picture packs shown in FIG. 6.

FIG. 27 is a diagram showing parameters and contents of reproduction control information (PCI) of the navigation pack shown in FIG. 26.

28 is a diagram showing parameters and contents of general information (PCI_GI) in the reproduction control information (PCI) shown in FIG. 27.

FIG. 29 is a diagram showing parameters and contents of disc search information (DSI) of the navigation pack shown in FIG. 26.

FIG. 30 shows the disc search information (DS
The figure which shows the parameter and content of DSI general information (DSI_GI) of I).

FIG. 31 shows the video object (VO
The figure which shows the parameter of the synchronous reproduction information (SYNCI) of B), and its content.

FIG. 32 is a diagram for explaining an adjustment example when the adjustment data length is 7 bytes or more.

FIG. 33 is a diagram for explaining an example of adjustment when the adjustment data length is 6 bytes or less.

FIG. 34 is a view for explaining the structure of a pack.

FIG. 35 is a view for explaining the structure of a pack.

FIG. 36 is a view for explaining the structure of a video pack.

FIG. 37 is a diagram for explaining the configuration of an audio pack.

FIG. 38 is a diagram for explaining the configuration of a sub-picture pack.

FIG. 39 is a diagram for explaining the structure of a pack of computer data.

FIG. 40 is a diagram for explaining the environment type of computer data.

FIG. 41 is a diagram for explaining the structure of a stream ID.

42 is a diagram for explaining the content of a substream ID for private stream 1. FIG.

FIG. 43 is a diagram for explaining the content of a substream ID for a private stream 2.

FIG. 44 is a diagram for explaining the configurations of an audio pack and a packet.

FIG. 45 is a diagram for explaining the configuration of computer data packs and packets.

FIG. 46 is a diagram for explaining the configurations of sub-picture packs and packets.

FIG. 47 is a block diagram for explaining the configuration of a packet transfer processing unit.

FIG. 48 is a flowchart showing the procedure of a reproduction process of video data, audio data, sub-picture data, and computer data.

FIG. 49 is a flowchart for explaining packet transfer processing.

FIG. 50 is a block diagram showing an encoder system that encodes video data to generate a video file.

51 is a flowchart showing the encoding process shown in FIG. 50.

52 is a flowchart for creating a video data file by combining video data, audio data, and sub-video data encoded by the flow shown in FIG. 51. FIG.

FIG. 53 is a block diagram showing a system of a disc formatter for recording a formatted video file on an optical disc.

54 is a flowchart for creating logical data to be recorded on the disc in the disc formatter shown in FIG. 53.

FIG. 55 is a flowchart for creating physical data to be recorded on a disc from logical data.

FIG. 56 is a schematic diagram showing a system for transferring the video title set shown in FIG. 4 via a communication system.

[Explanation of symbols]

 10 ... Optical disc 71 ... Management area 72 ... Data area 84 ... Cell 86 ... Navigation pack 87 ... Video pack 88 ... Computer data pack 90 ... Sub-picture pack 91 ... Audio pack 120 ... Pack header 121 ... Packet header 131, 141, 151 ... Substream ID 133 ... Start address of frame data 187 ... Program chain 189 ... Program

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiko Hirara, 3-3-9 Shimbashi, Minato-ku, Tokyo, Toshiba Abu E Co., Ltd. (72) Inventor Tomoaki Kurano 70 Yanagicho, Saiwai-ku, Kawasaki-shi, Kanagawa Address inside Toshiba Yanagimachi factory

Claims (28)

[Claims] 1. A management area is formed in a part of the area, and a data area is formed in another area, and the data is divided into a plurality of program chains and recorded in the data area. Each program is composed of a plurality of cells, one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack is recorded with a pack header for identifying each pack and a data stream. The packet includes at least a packet header having data indicating a private stream, data indicating the type of private stream, and packet data corresponding to this type. The management area includes a program chain of the data area and a program. A management device that manages connections to cells, cells, and packs. Recording medium, wherein data is recorded, that. 2. The data indicating the type of the private stream includes special reproduction data, Dolby AC3 audio data, linear audio data, sub-picture data, computer data, JPEG data, TIFF data, PICT data, photo CD data, The recording medium according to claim 1, which indicates a type of bitmap data, XA audio data, or the like. 3. When the data indicating the type of the private stream is linear audio data or Dolby AC3 audio data in which frame unit data is recorded, data indicating the access position of the first frame in the pack is included in the packet. The recording medium according to claim 2, wherein is recorded. 4. When the data indicating the type of the private stream indicates linear audio data or Dolby AC3 audio data in which frame-unit data is recorded, the data indicating the type of the private stream in the packet is followed by a pack. The recording medium according to claim 2, wherein data indicating an access position of the first frame in the inside is recorded. 5. When the data indicating the type of the private stream indicates computer data, the data indicating the type of the private stream is followed by the data indicating the type of computer that can use the pack data and the operation system used. The recording medium according to claim 2, wherein: 6. A hierarchical structure in which a management area is formed in a part of the area and a data area is formed in another area, a plurality of programs are recorded in the data area, and one program is composed of a plurality of packs. Each of the packs is composed of a packet in which a pack header for identifying each pack and a data stream are recorded, and the packet has at least a data indicating a private stream and a data indicating the type of the private stream. And a packet data corresponding to this type, and management data for managing connection between each program and the pack in the data area is recorded in the management area. 7. The data indicating the type of the private stream includes special reproduction data, Dolby AC3 audio data, linear audio data, sub-picture data, computer data, JPEG data, TIFF data, PICT data, photo CD data, The recording medium according to claim 6, wherein the recording medium indicates a type of bitmap data, XA audio data, or the like. 8. The data indicating the access position of the first frame is recorded in the packet when the data indicating the type of the private stream indicates linear audio data in which data in frame units is recorded or Dolby AC3 audio data. The recording medium according to claim 7, characterized in that: 9. When the data indicating the type of the private stream indicates linear audio data or Dolby AC3 audio data in which frame-unit data is recorded, the head after the data indicating the type of the private stream in the packet The recording medium according to claim 7, wherein data indicating an access position of the frame is recorded. 10. When the data indicating the type of the private stream indicates computer data, the data indicating the type of the private stream is followed by the data indicating the type of computer in which the pack data can be used and the operation system used. The recording medium according to claim 7, characterized in that: 11. A management area is formed in a part of the area, and a data area is formed in another area. In the data area, data is divided into a plurality of program chains and recorded, and each program chain is composed of a plurality of programs. Become 1
One program is composed of a plurality of cells, one cell is recorded in a hierarchical structure of a plurality of packs, and each pack has a pack header for identifying each pack and a packet in which data is recorded. Data or sub-picture data is received, part of the received audio data is the frame data, the start address of this frame data, the stream number of the audio data and the data indicating the audio data. A pack is formed by adding a pack header for identifying a pack to a packet with data indicating a stream and a packet header having a packet length, and a part of the received sub-picture data and this sub-picture data Stream number and sub-picture data Packet data consisting of the data shown below and data showing that this packet data is a private stream or a packet header having a packet length, and a pack header for identifying the pack is added to the packet to form the pack. A recording method for recording a pack on the recording medium. 12. A management area is formed in a part of the area, and a data area is formed in another area. In the data area, data is divided into a plurality of program chains and recorded, and each program chain is composed of a plurality of programs. Become 1
One program is composed of a plurality of cells, one cell is recorded in a hierarchical structure of a plurality of packs, and each pack has a pack header for identifying each pack and a packet in which data is recorded. AC3 audio data, linear audio data, computer data, or sub-picture data is received, part of the received Dolby AC3 audio data, start address of this frame data, Dolby AC3 stream number of Dolby AC3 audio data, and audio A packet header made up of packet data consisting of data indicating data and data indicating that this packet data is a private stream or a packet header having a packet length is provided with a pack header for identifying a pack. To form a pack, and the packet data consisting of part of the frame data of the received linear audio data, the start address of this frame data, the stream number of the linear audio data, and the data indicating the linear audio data, and this packet data A pack header for identifying a pack is added to a packet including data indicating a private stream and a packet header having a packet length to form a pack, and a part of the received computer data and this computer data A pack is identified by a packet including packet data including environment information of a CPU used and an OS used and data indicating computer data, data indicating that the packet data is a private stream, and a packet header having a packet length. A packet header for adding a pack header is formed to form a pack, and packet data consisting of part of the received sub-picture data, stream number of the sub-picture data, and data indicating the sub-picture data, and this packet data are private streams. A packet having a packet header having data and a packet length indicating that the pack is formed by adding a pack header for identifying the pack, and the formed pack is recorded on the recording medium. Method. 13. A management area is formed in a part of the area, and a data area is formed in another area. In the data area, data is divided into a plurality of program chains and recorded, and each program chain is composed of a plurality of programs. Become 1
One program is composed of a plurality of cells, one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack has a pack header for identifying each pack and a recording medium having a packet in which data is recorded. Playback data, Dolby AC3 audio data, linear audio data, computer data, or sub-picture data is received, and packet data composed of the received special playback data and data indicating special playback data and this packet data Is a private stream and a packet header having a packet header having a packet length is added with a pack header for identifying the pack to form a pack, and a part of the frame data of the received Dolby AC3 audio data is received. And of this frame data A pack is identified by a packet including a start address, a Dolby AC3 stream number of Dolby AC3 audio data, and data indicating audio data, and data indicating that this packet data is a private stream and a packet header having a packet length. A pack header is added to create a pack, and it is composed of a part of frame data of the received linear audio data, a start address of this frame data, a stream number of the linear audio data, and data indicating the linear audio data. A pack header for identifying the pack is added to the packet by the packet data and the data indicating that the packet data is a private stream and the packet header having the packet length. Packet data consisting of part of the received computer data, environment information of the CPU and OS used by the computer data and data indicating the computer data, and data or packets indicating that the packet data is a private stream. A packet header having a length and a pack header for identifying the pack is added to the packet to form a pack, and a part of the received sub-picture data, a stream number of the sub-picture data, and data indicating the sub-picture data. A packet header consisting of packet data consisting of and a packet header having data indicating that this packet data is a private stream and a packet header having a packet length is added with a pack header to identify the pack to form a pack. Record on the above recording medium Recording wherein the. 14. A management area is formed in a part of the area, and a data area is formed in another area. Data is recorded in a plurality of program chains in the data area, and each program chain is composed of a plurality of programs. One program is composed of a plurality of cells, one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack has a pack header for identifying each pack and a recording medium having a packet in which data is recorded. In a recording device for recording data, receiving means for receiving audio data or sub-picture data, part of frame data of audio data received by this receiving means, start address of this frame data and stream number of audio data Packet data consisting of data indicating audio data and this Packet data including a packet header having a packet length and data indicating that the packet data is a private stream, and a first forming means for forming a pack by adding a pack header for identifying the pack to the packet, and the receiving means. Packet data consisting of a part of the sub-picture data, the stream number of the sub-picture data, and data indicating the sub-picture data, data indicating that the packet data is a private stream, and a packet with a packet header having a packet length. A second forming means for forming a pack by adding a pack header for identifying the pack; and a recording means for recording the pack formed by the first or second forming means on the recording medium. A recording device characterized by the above. 15. A management area is formed in a part of the area, and a data area is formed in another area, and data is divided into a plurality of program chains and recorded in the data area, and each program chain is composed of a plurality of programs. One program is composed of a plurality of cells, one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack has a pack header for identifying each pack and a recording medium having a packet in which data is recorded. In a recording device for recording data, receiving means for receiving Dolby AC3 audio data, linear audio data, computer data, or sub-picture data, partial frame data of the Dolby AC3 audio data received by this receiving means, and this frame Data start address and Dolby AC3 audio A packet data consisting of a stream number of audio data and data indicating Dolby AC3 audio data, a packet header including data indicating that this packet data is a private stream and a packet header having a packet length, and a pack header for identifying a pack. First forming means for giving a pack to form a part of frame data of the linear audio data received by the receiving means, a start address of the frame data, a stream number of the linear audio data, and data indicating the linear audio data. A pack header for identifying the pack is added to the packet by the packet data consisting of and a packet header having a packet length and data indicating that this packet data is a private stream, and the pack is formed. Second forming means, packet data consisting of a part of the computer data received by the receiving means, environment information of the CPU and OS used by the computer data, and data indicating the computer data, and the packet data is a private stream. Third forming means for forming a pack by adding a pack header for identifying the pack to the packet by the data indicating that the packet and the packet header having the packet length; and the sub-picture data received by the receiving means. In order to identify a pack in a packet data consisting of a part, a stream number of this sub-picture data, and data indicating the sub-picture data, and data indicating that this packet data is a private stream or a packet header having a packet length. Add pack header A recording apparatus comprising: a fourth forming means for forming a pack by the above, and a recording means for recording the pack formed by the first to fourth forming means on the recording medium. 16. A management area is formed in a part of the area and a data area is formed in another area, and data is divided into a plurality of program chains and recorded in the data area, and each program chain is composed of a plurality of programs. One program is composed of a plurality of cells, one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack has a pack header for identifying each pack and a recording medium having a packet in which data is recorded. In a recording device for recording data, a receiving means for receiving special reproduction data, Dolby AC3 audio data, linear audio data, computer data, or sub-picture data, and the received special reproduction data and special reproduction data. Packet data consisting of data indicating data and this packet data First forming means for forming a pack by adding a pack header for identifying a pack to a packet including data indicating a stream and a packet header having a packet length; and a Dolby AC3 audio received by the receiving means. Packet data consisting of a part of frame data of data, start address of this frame data, stream number of Dolby AC3 audio data and data indicating Dolby AC3 audio data, and data or packet indicating that this packet data is a private stream Second forming means for forming a pack by adding a pack header for identifying a pack to a packet by a packet header having a length, and part of frame data of the linear audio data received by the receiving means. Packet data including the start address of the frame data, the stream number of the linear audio data, and data indicating the linear audio data, and data indicating that this packet data is a private stream and a packet header having a packet length. A third forming means for forming a pack by adding a pack header for identifying, a part of the computer data received by the receiving means, environment information of the CPU used and OS used by the computer data, and the computer data. A pack header for identifying the pack is added to the packet formed by the packet data including the data indicating the packet data and the packet header having the packet length and the data indicating that the packet data is a private stream to form the pack Fourth forming means, packet data composed of a part of the sub-picture data received by the receiving means, stream number of the sub-picture data and data indicating the sub-picture data, and the packet data being a private stream. A fifth forming means for forming a pack by adding a pack header for identifying a pack to a packet by a packet header having data or a packet length shown, and a pack formed by these first to fifth forming means. A recording device comprising: a recording unit that records on the recording medium. 17. A management area is formed in a part of the area, and a data area is formed in another area. Data is divided into a plurality of program chains and recorded in the data area, and each program chain is composed of a plurality of programs. Recording medium having a packet in which one program is composed of a plurality of cells, one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack has a pack header for identifying each pack and data. When reproducing the data for each pack recorded from, the data for each pack of the recording medium is read, and it is determined whether or not there is data indicating a private stream in the packet header of the read pack and the data is recorded. When the length is determined and this private stream is determined, It is determined whether the data is audio data or sub-picture data based on the stream type data, and when the audio data is determined, the read pack is read according to the start address of the frame data read subsequently to the stream type data. The data in the data is extracted by the determined data length, and when the sub-picture data is determined, the data in the read pack data following the stream type data is extracted by the determined data length, and the extracted data is extracted. The audio data or the sub-picture data is demodulated corresponding to the type of the data determined above, and the demodulated data is reproduced and output. 18. A management area is formed in a part of the area, and a data area is formed in another area. Data is divided into a plurality of program chains and recorded in the data area, and each program chain is composed of a plurality of programs. Recording medium having a packet in which one program is composed of a plurality of cells, one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack has a pack header for identifying each pack and data. When reproducing the data for each pack recorded from, the data for each pack of the recording medium is read, and it is determined whether or not there is data indicating a private stream in the packet header of the read pack and the data is recorded. When the length is determined and this private stream is determined, Data is Dolby AC3 audio data, linear audio data,
When it is judged whether it is computer data or sub-picture data, and when judging Dolby AC3 audio data or linear audio data, the read pack data is read according to the start address of the frame data read subsequently to the stream type data. When the computer data is determined, the environment data of the CPU used and the OS used, which is read subsequently to the stream type data, is extracted and the environment information of the CPU is extracted. Extract the data in the read pack data by the determined data length, and when determining the sub-picture data, extract the data in the read pack data following the stream type data by the determined data length, Dolby AC3 audio data extracted above, linear audio The video data or the sub-picture data is demodulated corresponding to the type of the judged data, the demodulated data is reproduced and output, and the extracted program data and its environment information are output. How to play. 19. A management area is formed in a part of the area, and a data area is formed in another area, and data is divided into a plurality of program chains and recorded in the data area, and each program chain is composed of a plurality of programs. Recording medium having a packet in which one program is composed of a plurality of cells, one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack has a pack header for identifying each pack and data. When reproducing the data for each pack recorded from, the data for each pack of the recording medium is read, and it is determined whether or not there is data indicating a private stream in the packet header of the read pack and the data is recorded. When the length is determined and this private stream is determined, Judging whether the data is special playback data, Dolby AC3 audio data, linear audio data, computer data, or sub-picture data according to the stream type data, and when determining the special playback data, the stream type data is continued. When the special reproduction data in the pack data to be read out is extracted by the determined data length and Dolby AC3 audio data or linear audio data is determined, the start of the frame data to be read subsequently to the stream type data is started. According to the address, the data in the read pack data is extracted by the determined data length, and when the computer data is determined, the environment information of the used CPU and the used OS read after the stream type data is read. Extract and continue with this environmental information. Extract the data in the read pack data by the determined data length, and when determining the sub-picture data, extract the data in the read pack data following the stream type data by the determined data length, The extracted Dolby AC3 audio data, linear audio data, or sub-picture data is demodulated corresponding to the determined data type based on the special reproduction data, and the demodulated data is reproduced and output. Then, the reproducing method characterized by outputting the extracted program data and its environment information. 20. A management area is formed in a part of the area, and a data area is formed in another area, and data is divided into a plurality of program chains and recorded in the data area, and each program chain is composed of a plurality of programs. Recording medium having a packet in which one program is composed of a plurality of cells, one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack has a pack header for identifying each pack and data. In a reproducing device for reproducing the data for each pack recorded from, the reading means for reading the data for each pack of the recording medium, and the data indicating the private stream in the packet header of the pack read by the reading means. A first determining means for determining the presence or absence of data and a data length, and the first determining means. When the private stream is judged by the means, a second judging means for judging whether the data is audio data or sub-picture data according to the type data of the stream to be subsequently read, and the audio data by the second judging means. When judged, the audio data in the pack data read by the reading means is extracted by the data length judged by the first judging means according to the start address of the frame data read subsequently to the stream type data. When the sub-image data is judged by the first extracting means and the second judging means,
Second extraction means for extracting the data in the pack data read by the reading means following the stream type data by the data length determined by the first determination means, and the first or second extraction means Demodulation means for demodulating the extracted data corresponding to the type of data judged by the second judgment means, and output means for reproducing and outputting the data demodulated by the demodulation means. A playback device characterized by the above. 21. A management area is formed in a part of the area, and a data area is formed in another area. Data is recorded in a plurality of program chains in the data area, and each program chain is composed of a plurality of programs. Recording medium having a packet in which one program is composed of a plurality of cells, one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack has a pack header for identifying each pack and data. In a reproducing device for reproducing the data for each pack recorded from, the reading means for reading the data for each pack of the recording medium, and the data indicating the private stream in the packet header of the pack read by the reading means. A first determining means for determining the presence or absence of data and a data length, and the first determining means. A second judging means for judging whether the data is Dolby AC3 audio data, linear audio data, computer data, or sub-picture data based on the type data of the stream that is read out when the private stream is judged by the means; When the second judging means judges the Dolby AC3 audio data or the linear audio data, the Dolby in the pack data read by the reading means according to the start address of the frame data read subsequently to the stream type data. When the AC3 audio data or the linear audio data is extracted by the data length judged by the first judging means, the first extracting means and the computer data are judged by the second judging means. Read The second information is extracted while extracting the environment information of the used CPU and the used OS, and extracting the data in the pack data read by the reading means following the environment information by the data length determined by the first determining means. When the sub-picture data is judged by the extracting means and the second judging means,
By the third extracting means for extracting the data in the pack data read by the reading means following the stream type data by the data length judged by the first judging means, and the first or third extracting means. Demodulation means for performing demodulation on the extracted data corresponding to the type of the data judged by the second judgment means, and first output means for reproducing and outputting the data demodulated by the demodulation means, A reproducing apparatus comprising: a second output unit that outputs the program data extracted by the second extracting unit and its environment information. 22. A management area is formed in a part of the area and a data area is formed in another area, and data is divided into a plurality of program chains and recorded in the data area, and each program chain is composed of a plurality of programs. Recording medium having a packet in which one program is composed of a plurality of cells, one cell is recorded in a hierarchical structure composed of a plurality of packs, and each pack has a pack header for identifying each pack and data. In a reproducing device for reproducing the data for each pack recorded from, the reading means for reading the data for each pack of the recording medium, and the data indicating the private stream in the packet header of the pack read by the reading means. A first determining means for determining the presence or absence of data and a data length, and the first determining means. Second, when the private stream is determined by the means, it is determined whether the data is data for special reproduction, Dolby AC3 audio data, linear audio data, computer data, or sub-picture data, based on the stream type data that is read out subsequently. When the special reproduction data is judged by the second judgment means and the special judgment data, the special reproduction data read subsequently to the stream type data has the data length judged by the first judgment means. When the Dolby AC3 audio data or the linear audio data is determined by the first extracting unit for extracting and the second determining unit, the reading is performed according to the start address of the frame data read subsequently to the stream type data. Dolby AC3 in pack data read by means Second extraction means for extracting audio data or linear audio data by the data length determined by the first determination means, and when computer data is determined by the second determination means, the stream type data is read subsequently. A third extraction for extracting the environment information of the used CPU and the used OS, and for extracting the data in the pack data read by the reading means subsequent to the environment information by the data length judged by the first judging means. Means and the second judging means judges the sub-picture data,
The fourth extracting means for extracting the data in the pack data read by the reading means following the stream type data by the data length judged by the first judging means, and the second or fourth extracting means. Demodulation means for performing demodulation on the extracted data respectively corresponding to the type of data judged by the second judging means, using the special reproduction data extracted by the first extracting means; A first output means for reproducing and outputting the data demodulated by the demodulation means, and a second output means for outputting the program data extracted by the second extraction means and the environment information thereof. Playback device characterized by. 23. Receiving reproduction data transferred from the outside, wherein the reproduction data is a plurality of data units to be reproduced in time series, each of which is to be reproduced within a fixed time range. The data unit is composed of a plurality of compressed and packetized data pack sequences containing at least one of audio, video and sub-picture, and the data for each pack of the received reproduction data
Whether or not there is data indicating that it is a private stream in the packet header of the pack and the data length are determined, and when this private stream is determined, the data is audio data or When judging whether it is sub-picture data and judging audio data, the data in the supplied pack data is divided by the judged data length according to the start address of the frame data supplied subsequently to the stream type data. When the extracted sub-picture data is judged, the data in the supplied pack data is extracted for the judged data length following the stream type data, and the extracted audio data or sub-picture data is extracted. , Perform demodulation corresponding to the type of data judged above, Reproducing method for demodulating data reproduced and outputted, it is characterized. 24. Receiving reproduction data transferred from the outside, wherein the reproduction data is a plurality of data units to be reproduced in time series, each of which is to be reproduced within a fixed time range. The data unit is composed of a plurality of compressed and packetized data pack sequences containing at least one of audio, video and sub-picture, and the data for each pack of the received reproduction data
The packet header of the pack determines whether or not there is data indicating that it is a private stream, and also determines the data length, and when determining this private stream, the data is Dolby AC3 audio data according to the stream type data that is continuously supplied. , Linear audio data,
When judging whether it is computer data or sub-picture data, and judging Dolby AC3 audio data or linear audio data, the supplied pack data is supplied according to the start address of the frame data supplied subsequently to the stream type data. When the computer data is determined by extracting the data in the data for the above-mentioned determined data length, the environment information of the used CPU and the used OS supplied subsequently to the stream type data is extracted, and the environmental information is also followed by the above-mentioned information. The data in the supplied pack data is extracted by the length determined above, and when the sub-picture data is judged, the data in the pack data supplied following the stream type data is extracted by the length determined above. Then, the extracted Dolby AC3 audio data, linear audio The video data or the sub-picture data is demodulated corresponding to the type of the judged data, the demodulated data is reproduced and output, and the extracted program data and its environment information are output. How to play. 25. Receiving reproduction data transferred from the outside, wherein the reproduction data is a plurality of data units to be reproduced in time series, each of which is to be reproduced within a fixed time range. The data unit is composed of a plurality of compressed and packetized data pack sequences containing at least one of audio, video and sub-picture, and the data for each pack of the received reproduction data
When determining whether or not there is data indicating that it is a private stream in the packet header of the pack, and also determining the data length, and when determining this private stream, the data is used for special playback depending on the stream type data that is continuously supplied. When the data, Dolby AC3 audio data, linear audio data, computer data, or sub-picture data is judged and the special reproduction data is judged, the special reproduction in the pack data supplied after the stream type data is judged. When the Dolby AC3 audio data or the linear audio data is extracted by extracting the data of the above-mentioned data length determined above, according to the start address of the frame data supplied subsequently to the stream type data, the supplied pack data Data in above When the computer data is judged by extracting the cut data length, the environment information of the used CPU and the used OS, which is supplied subsequently to the stream type data, is extracted, and the supplied pack data is continuously supplied from this environment information. When the sub-picture data is determined by extracting the data in the pack data, the data in the supplied pack data following the stream type data is extracted by the determined data length and extracted. The Dolby AC3 audio data, the linear audio data, or the sub-picture data is demodulated corresponding to the determined data type based on the special reproduction data, and the demodulated data is reproduced and output. A reproducing method characterized by outputting the extracted program data and its environment information. 26. Receiving reproduction data transferred from the outside, wherein the reproduction data is a plurality of data units to be reproduced in time series, each of which is to be reproduced within a fixed time range. The data unit is composed of a plurality of compressed and packetized data pack sequences containing at least one of audio, video and sub-picture, and the data for each pack of the received reproduction data
A first judging means for judging the presence or absence of data indicating that it is a private stream in the packet header of the pack and a data length are judged, and when the private stream is judged by this first judging means, the data is continuously supplied. Second determining means for determining whether the data is audio data or sub-picture data according to the stream type data, and when the audio data is determined by the second determining means, the stream type data is supplied subsequently. First extraction means for extracting the audio data in the supplied pack data by the data length determined by the first determination means according to the start address of the frame data, and the sub-picture by the second determination means. When judging the data,
Second extraction means for extracting the data in the supplied pack data following the stream type data by the data length determined by the first determination means, and the first or second extraction means. Demodulation means for performing demodulation corresponding to the type of data judged by the second judgment means, and output means for reproducing and outputting the data demodulated by the demodulation means. Characterizing playback device. 27. Receiving reproduction data transferred from the outside, the reproduction data being a reproduction target in time series, each of which is a plurality of data units to be reproduced within a fixed time range, The data unit is composed of a plurality of compressed and packetized data pack sequences containing at least one of audio, video and sub-picture, and the data for each pack of the received reproduction data
A first judging means for judging the presence or absence of data indicating that it is a private stream in the packet header of the pack and a data length are judged, and when the private stream is judged by this first judging means, the data is continuously supplied. Second judging means for judging whether the data is Dolby AC3 audio data, linear audio data, computer data, or sub-picture data according to the stream type data, and Dolby AC3 audio data or linear audio data by the second judging means. The first determining means determines the Dolby AC3 audio data or linear audio data in the supplied pack data according to the start address of the frame data supplied subsequently to the stream type data. When the computer data is judged by the first extracting means for extracting the data length and the second judging means, the environment information of the used CPU and the used OS, which is continuously supplied to the stream type data, is extracted. Subsequent to this environmental information, the data in the supplied pack data is extracted by the second extraction means for extracting the data length judged by the first judgment means, and the sub-picture data is judged by the second judgment means. When
Third extraction means for extracting the data in the supplied pack data subsequent to the stream type data by the data length determined by the first determination means, and extracted by the first or third extraction means. Demodulating means for performing demodulation corresponding to the type of the data judged by the second judging means, and first outputting means for reproducing and outputting the data demodulated by the demodulating means. And a second output unit for outputting the program data extracted by the second extracting unit and the environment information thereof. 28. Receiving reproduction data transferred from the outside, wherein the reproduction data is a plurality of data units to be reproduced in time series, each of which is to be reproduced within a fixed time range. The data unit is composed of a plurality of compressed and packetized data pack sequences containing at least one of audio, video and sub-picture, and the data for each pack of the received reproduction data
A first judging means for judging the presence or absence of data indicating that it is a private stream in the packet header of the pack and a data length are judged, and when the private stream is judged by this first judging means, the data is continuously supplied. Second judging means for judging whether the data is special reproduction data, Dolby AC3 audio data, linear audio data, computer data, or sub-picture data according to the stream type data, and special reproduction is carried out by the second judging means. A first extracting means for extracting special reproduction data, which is supplied subsequently to the stream type data, by the data length judged by the first judging means, and the second judgment. Determine Dolby AC3 audio data or linear audio data by At this time, according to the start address of the frame data supplied subsequently to the stream type data, the Dolby AC3 audio data or the linear audio data in the supplied pack data is divided by the data length judged by the first judging means. When the computer data is judged by the second extracting means for extracting and the second judging means, the environment information of the CPU to be used and the OS to be used which is supplied subsequently to the stream type data is extracted and In succession, when the data in the supplied pack data is extracted by the data length judged by the first judging means, the third extracting means and the second judging means judge sub-picture data,
Fourth extraction means for extracting the data in the supplied pack data subsequent to the stream type data by the data length determined by the first determination means, and the second or fourth extraction means. Demodulation means for performing demodulation corresponding to the type of data judged by the second judgment means on the obtained data using the special reproduction data extracted by the first extraction means; A first output means for reproducing and outputting the data demodulated by the means, and a second output means for outputting the program data extracted by the second extracting means and the environment information thereof. Playback device.