JP3665390B2 - Playback device, optical disc, and recording device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an optical disk. To playback device, optical disc and recording device Related.
[0002]
[Prior art]
Conventionally, a television screen for home use has a vertical / horizontal size ratio of 3: 4. Therefore, the image (video data) displayed on this television also corresponds to this screen size.
[0003]
However, due to the diversification of video data as video software and higher image quality in recent years, high-definition televisions have a desire to display as long a horizontal screen as possible, such as the screen of a movie screened in a movie theater. The vertical and horizontal screen size is set to 9:16, and the screen can be displayed in a form closer to the display state in the movie theater, which has been more powerful than before.
[0004]
However, because HDTV broadcasts have a different format from conventional video display methods, a dedicated data converter is required to display high-definition broadcasts on conventional televisions, and there is a delay in unification of high-definition formats with foreign countries. For the reason, its spread is not ridiculous.
[0005]
Therefore, in recent years, high-definition broadcasts cannot be displayed, but TVs with the function of displaying 9:16 and expanding the conventional 3: 4 TV broadcast to 9:16 are rapidly spreading. It's getting on.
[0006]
Also, in video and audio recording / playback devices such as laser discs and VTRs, the screen size of the video recorded there is various sizes such as cinema size (9:16) in addition to TV size (3: 4). The software is mixed. When these are played back on a television, a playback device such as a laser disk player or a video cassette recorder has no means for switching the screen size, and can be switched by a display screen switching function on the television monitor side.
[0007]
However, such processing is disadvantageous in terms of image quality, and if the current video software or hardware quality is used to the fullest, a vertically long display is required when displaying on a 3: 4 TV monitor. The video (squeeze screen) is recorded on a recording medium, and this is expanded as it is to a 9:16 screen ratio and displayed on a 9:16 TV monitor (horizontal TV) for viewing. Good to do.
[0008]
However, such a squeeze screen is good when viewed on a 9:16 TV monitor, but when viewed on a conventional 3: 4 size TV monitor, the screen is distorted to be elongated vertically. There was a drawback of being bad.
[0009]
Therefore, when a squeeze screen recorded on a recording medium is viewed on a conventional 3: 4 size TV monitor, it is converted into a letterbox screen or a pan scan screen that does not cause distortion in the aspect ratio of the aspect ratio and played back. It is desired that the user can freely select a favorite video mode from among them.
[0010]
[Problems to be solved by the invention]
As described above, the present invention converts a squeeze screen recorded on a recording medium into a letterbox screen or a pan scan screen that does not cause distortion in the aspect ratio of the screen when viewed on a conventional 3: 4 size TV monitor. A squeeze screen recorded on a recording medium with a conventional 3: 4 size is desired. When viewing on a TV monitor, it has a function to play by converting to a letterbox screen or pan scan screen that does not cause distortion in the aspect ratio of the aspect ratio, and the user can freely select the desired display mode from among them, Furthermore, it is intended to provide a playback apparatus and a playback method capable of switching the display mode in a state in which the display mode is limited reflecting the creator's intention. The target.
[0011]
[Means for Solving the Problems]
This invention Is In an optical disc having a data recording area defined by at least one title set area defined between a lead-in area and a lead-out area and divided by logical sector boundaries, the title set area includes a title -The video, audio, and sub-picture data in the video, audio, and sub-picture data that make up the set, and the playback target area in which the video, audio, and sub-picture packs are continuously recorded, and the playback of the video, audio, and sub-picture data A title set information area in which title set information to be controlled is recorded; Said The title set information includes video attribute information, audio attribute information, and sub-picture attribute information in order to appropriately reproduce video, audio, and sub-picture data of the title set, and the video attribute information includes the video data Including information indicating whether MPEG1 or MPEG2 as the compression mode information, Furthermore, the information on the frame rate and display aspect ratio of the video data, information on the display mode, including letterbox prohibition or permission information to limit the display state, The audio attribute information includes information indicating AC3, linear PCM, or MPEG1 as information related to an audio coding mode of the audio data, and the sub-picture attribute information relates to a sub-picture coding mode of the sub-picture data. Optical disc including information indicating run length as information In the playback apparatus that plays back the data, the acquisition means for acquiring the video, audio, and sub-picture attribute information from the title set information of the title set, and the audio and sub-picture pack are decoded. An audio and sub-picture decoder; a video decoder for decoding the video pack; and processing the decoded video data in accordance with a frame rate and display aspect ratio obtained from the attribute information, and a display mode included in the attribute information Video playback processing means whose display state is restricted in accordance with letterbox prohibition or permission information included in the information on It has.
[0015]
[Action]
The present invention provides an optical disc having a data recording area defined by at least one title set area defined between a lead-in area and a lead-out area and divided by logical sector boundaries. The area includes a video, audio, and sub-picture data that are stored in the video, audio, and sub-picture data constituting the title set. It has a title set information area in which title set information for controlling data reproduction is recorded. This title set information is video attribute information for appropriately reproducing the video, audio and sub-picture data of the title set. Audio attribute information and sub-picture attribute information, and the video The sex information includes information indicating MPEG1 or MPEG2 as information regarding the compression mode of the video data, and the audio attribute information indicates whether AC3, linear PCM, or MPEG1 is information regarding the audio coding mode of the audio data. The sub-picture attribute information is for reproducing data from an optical disc including information indicating a run length as information relating to a sub-picture coding mode of the sub-picture data. The video, audio and sub-picture pack A video, audio, and sub-picture decoder that decodes the video data, and acquires the video, audio, and sub-picture attribute information from the title set information of the title set before reproduction of the reproduction data, and the acquired video , Audio and It is obtained so as to set the video, audio and sub-picture decoder to properly reproduce the video and audio and sub-picture data of the title set in accordance with the video attribute information .
[0016]
【Example】
Hereinafter, an optical disk reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.
[0017]
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. FIG. 2 shows a block of a disc drive unit for driving the optical disc shown in FIG. Reference numeral 3 denotes the structure of the optical disk shown in FIGS.
[0018]
In the optical disk reproducing apparatus shown in FIG. 1, the user operates the key operation unit and display unit 4 on the front panel of the main body or the remote control 5 as a remote operation device connected to the main body by optical communication using infrared rays. Recorded data, that is, video data, sub-video data, and audio data are reproduced from the optical disc 10 and converted into audio (audio) signals and video signals in the apparatus, and video and audio are output from the monitor unit 6 and the speaker unit 8 outside the apparatus. As reproduced.
[0019]
As shown in FIG. 4, the key operation unit and display unit 4 includes a power key 4a, a microphone input terminal 4b, a playback key 4c, a pause key 4d, a stop key 4e, a fast-forward / return key 4f, and an optical disk 10 loading / unloading. Is composed of an open / close key 4g, an indicator 4h, an optical disk 10 insertion, an outlet 4i, and the like.
[0020]
As shown in FIG. 5, the remote control 5 includes a power key 5a, a numeric key 5b, a stop key 5c, a play key 5d, a pause key 5e, a memory key 5f, and an open / close key for instructing to take in and out the optical disk 10. 5g, fast-forward / return key 5h, 5i, repeat key 5j for instructing repeat range and range, menu key 5k for instructing display of the menu screen, i key for instructing display of the menu screen for each item when the menu screen is displayed 5l, an up / down key 5m used for selecting an item when the menu screen is displayed, a shape key 5n for instructing switching of an image display mode, and the like.
[0021]
As already known, the optical disk 10 has various structures. As shown in FIG. 3, for example, a pair of structures 18 in which a recording layer, that is, a light reflection layer 16 is formed on a transparent substrate 14 are prepared. A high recording density type has emerged in which the pair of structures 18 are bonded to each other via an adhesive layer 20 so that the recording layer 16 is sealed inside. In the optical disk 10 having such a structure, a center hole 22 into which the spindle of the spindle motor 12 is inserted is provided at the center, and a clamping area for pressing the optical disk 10 at the time of rotation is provided around the center hole 22. 24 is provided.
[0022]
An area from the clamping area 24 to the outer peripheral edge of the optical disk 10 is defined as an information recording area 25 in which information can be recorded on the optical disk 10. The optical disk shown in FIG. 3 has information recording areas 25 on both sides. Each information recording area 25 has a lead-out area 26 in which information is not normally recorded in the outer peripheral area, and a lead-in area 27 in which information is not normally recorded in the inner peripheral area in contact with the clamping area 24. Further, 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 recording area 25, tracks are normally continuously formed in a spiral shape as an area where data is recorded, and the continuous tracks are divided into a plurality of sectors, and the data is based on the sectors. Is recorded. The data recording area 28 of the information recording area 25 is an actual data recording area, and management data, main image data, sub-image data, and audio data are similarly recorded as physical state changes such as pits as will be described later. Has been. In the read-only optical disk 10, a pit row is formed in advance on a transparent substrate 14 with a stamper, a reflective layer is formed on the surface of the transparent substrate 14 on which the pit row is formed, and the reflective layer is formed as a recording layer 14. Will be. Further, in this read-only optical disc 10, a groove as a track is usually not provided, and a pit row is defined as a track.
[0023]
In such an optical disk reproducing apparatus that reproduces data from the optical disk 10, the optical disk 10 is searched with a light beam in the disk drive unit 30 that drives the optical disk 10. That is, as shown in FIG. 2, the optical disk 10 is placed on a spindle motor 12 driven by a motor drive circuit 11 and rotated by the spindle motor 12. Below the optical disk 10, an optical head for condensing a light beam, that is, a laser beam on the optical disk 10, that is, an optical pickup 32 is provided. The optical head 32 is mounted on a guide mechanism (not shown) so as to be movable in the radial direction of the optical disk 10 in order to search the information recording area 25, particularly the data recording area 28, The optical disk 10 is moved in the radial direction by a feed motor 33 driven by a drive signal. An objective lens 34 is held on the optical disc 10 so as to be movable along its optical axis, and is moved in the direction of the optical axis in response to a drive signal from the focus drive circuit 36, so that the objective lens is always in the focus state. The lens 34 is maintained, and a minute beam spot is formed on the recording layer 16. The objective lens 34 is held so as to be finely movable along the radial direction of the optical disc 10, is finely moved in response to a drive signal from the track drive circuit 38, and is always maintained in a tracking state and is recorded in the recording layer 16 of the optical disc 10. The upper track is tracked with a light beam.
[0024]
In the optical head 32, the light beam reflected from the optical disk 10 is detected, and the detected signal thus detected is supplied from the optical head 32 to the servo processing circuit 44 via the head amplifier 40. The servo processing circuit 44 generates a focus signal, a tracking signal, and a motor control signal from the detection signal, and supplies these signals to the drive circuits 36, 38, and 11, respectively. Accordingly, the objective lens 34 is maintained in the focus state and the tracking state, the spindle motor 12 is rotated at a predetermined rotational speed, and the track on the recording layer 16 is a light beam by the light beam, for example, the linear velocity is constant. Tracked at. When a control signal as an access signal is supplied from the system CPU unit 50 to the servo processing circuit 44, a movement signal is supplied from the servo processing circuit 44 to the drive circuit 37, and the optical head 32 moves along the radial direction of the optical disk 10. Then, a predetermined sector of the recording layer 16 is accessed, and the reproduction data is amplified by the head amplifier 40 and output from the disk drive unit 30. The output reproduction data is stored in the data RAM unit 56 via the system CPU unit 50 and the system processor unit 54 controlled by a program recorded in the system ROM and RAM unit 52. The stored reproduction data is processed by the system processor unit 54 and classified into video data, audio data, and sub-picture data. The video data, audio data, and sub-picture data are divided into a video decoder unit 58 and an audio decoder unit 60, respectively. And output to the sub-picture decoder unit 62 for decoding. The decoded video data, audio data, and sub-picture data are converted into analog video signals, audio signals, and sub-picture signals by the D / A and reproduction processing circuit 64 and mixed, and then the video signals and sub-picture data are mixed. A signal is supplied to the monitor 6 and an audio signal is supplied to the speaker 8. As a result, an image is displayed on the monitor unit 6 and sound is reproduced from the speaker unit 8. The detailed operation of the optical disk apparatus shown in FIG. 1 will be described later in detail together with the logical format of the optical disk 10 described below.
[0025]
The data recording area 28 from the lead-in area 27 to the lead-out area 26 of the optical disc 10 shown in FIG. 2 has a volume structure as shown in FIG. 6 that complies with ISO9660 as a logical format. This volume structure includes a hierarchical volume management information area 70 and a file area 80. The volume management information area 70 corresponds to logical block numbers 0 to 23 determined according to ISO9660, and a system area 72 and a volume management area 74 are allocated. The system area 72 is not normally defined as a free area, but is provided for an editor who edits data to be recorded on the optical disk 10, for example, and realizes driving of the optical disk apparatus in accordance with the editor's intention. System programs are stored as needed. In the volume management area 74, volume management information for managing a file 78 such as a disk information file 76 (hereinafter simply referred to as a disk information file 76), a movie file, or a music file in the file area 80, that is, all of the information. The file recording position, recording capacity, file name, and the like are stored. In the file area 80, files 76 and 78 having a file number 0 to a file number 99 specified by logical block numbers after the logical block number 24 are arranged. , Files 78 from file number 1 to file number 99 are allocated as movie files, that is, video files or music files.
[0026]
As shown in FIG. 7, the disc information file 76 is composed of a file management information area 82 and a menu video data area 84. In the file management information area 82, selectable sequences recorded on the entire optical disc 10, That is, file management information for selecting a video or audio title is described. In the menu video data area 84, image data of a menu screen for displaying a selection menu such as a title is stored as a menu data cell 90 in units of cells. That is, the menu video data in the menu video data area 84 is divided into units of a necessary size according to the purpose as described in detail later, and from # 1 in the order of recording in the menu video data area 84 of the disc 10 It is defined as i menu cells 90 that are consecutively assigned numbers. The menu cell 90 stores video data, sub-picture data, or audio data relating to movie or audio title selection, program selection of each title, and the like.
[0027]
As shown in FIG. 7, the file management information area 82 includes a disc configuration information area 86 for storing disc configuration information (DSINF: Disc Structure Information), and a menu configuration information area for storing menu configuration information (MSINF: Menu Structure Information). There are three types of information areas 87 and a cell information table (MCIT: Menu Cell Information Table) 88 for storing cell information, which are arranged in this order.
[0028]
In the disk configuration information area 86, the number of movie files and music files recorded in the file area 80 of the disk 10, that is, the number of playback files 78 (described in the range from 1 to 99 as the parameter DSINF). The number of sequences (a series of data groups of video data including video, audio, sub-pictures, etc., which will be described in detail later, and hereinafter simply referred to as sequences) existing in each file 78, that is, Information such as the number of titles (described as parameter FSINF) is described.
[0029]
In the menu configuration information area 87, the number of menu cells 90 (described as parameter NOMCEL) of the menu video data area 84 recorded in the disc information file 76 and a title existing in the disc are selected. For example, information such as a start cell number (described as a parameter TMSCEL) of a title menu cell 90 constituting a series of menu video data is described.
[0030]
The menu cell information table 88 defines a set of i cell information areas 89 in which cell information necessary for reproducing each menu cell 90 is described in the order of cell numbers. In the cell information table 88, the position of the cell 90 in the file 76 (described by the offset logical block number from the beginning of the file as the parameter MCSLBN), the size (described by the number of logical blocks as the parameter MCNLB), and the like. Is described. Here, the disk configuration information (DSINF) and the menu configuration information (MSINF) are described continuously in the file management information area 82, and the menu cell information table (MCIT) 88 is aligned with the boundary of the logical block.
[0031]
One or more titles of music data or movie data are stored in movie files and music files 78 corresponding to file numbers 1 to 99. As shown in FIG. 8, each file 78 includes specification information for data included in the file 78, that is, a file management information area 101 in which management information (for example, address information and playback control information) is described. It has a file structure including a video data area 102 in which video data of the file 78 (video, audio, sub-video data, etc. are simply referred to as video data) is described. Similar to the menu cell 90 of the disc information file 76, the video data is divided into cell units in the video data area 102, and the video data is arranged as j video data cells 105.
[0032]
Normally, movie data or audio data of a certain title is represented as a set of continuous sequences 106. For example, a movie story is represented by a continuous sequence 106 corresponding to “start”, “approval”, “turn”, and “conclusion”. Therefore, the video data area 102 of each file 78 is defined as a set of sequences 106 as shown in FIG. Each sequence 106 is represented by a plurality of video programs (chapter) 107 corresponding to various scenes of the story, and each video program 107 is composed of a plurality of video data cells 105. In each video cell 105, as shown in FIG. 10, a plurality of groups of one image group (GOP: Group of Picture) in which a control pack (DSI) 92, a main video pack 93, a sub video pack 95, and an audio pack 98 are combined are arranged. Has been configured. The configuration of the video cell 105 is substantially the same as that of the menu cell 90, and the video data 102 is a movie (movie) or audio (audio) compressed in accordance with a compression standard such as the MPEG standard (Moving Picture Expert Group). In addition, data such as sub-pictures are recorded in a data format corresponding to the MPEG2 system layer. That is, the video data 102 is a program streamer defined by the MPEG standard. Furthermore, each pack 92, 93, 95, 98 has a pack structure composed of a pack header 97 and a packet 99 corresponding to the pack.
[0033]
The file management information area 101 includes a file management table (FMT: File Management Table) 113, a sequence information table (SIT: Sequence Information Table) 114, a cell information table (CIT: Cell Information Table) 115, and the like.
[0034]
The video data cells in the video data area 102 are sequentially numbered from # 1 in the order of recording on the disc, and the cell information and information related to the cell are described in the cell information table 115 in association with the cell number. ing. That is, the cell information table 115 is defined as a set of areas 117 in which j pieces of cell information (CI) in which information necessary for reproduction of video data cells is described in the order of cell numbers are stored. ) Describes information such as the position, size, and playback time of the cell in the file 78.
[0035]
FIG. 11 shows the contents of cell information (CI) stored in the cell information table 115. In the cell information (CI) described in the cell information area 117, the contents such as the start position and size of the video cell obtained by dividing the video data in units according to the purpose are described by parameters. That is, the cell information (CI) includes cell type information (CCAT) indicating the content of the video cell such as whether the video cell is movie, karaoke or interactive menu, and cell playback information indicating the total playback time of the video cell. (CTIME), the upper 32 bits of the SCR (system time base reference value) described in the start pack of the cell (CSSCR), the start position of the video cell, that is, the start address (offset logical block number from the beginning of the file) Cell start position information (CSLBN) indicating cell size, cell size information (CNLB) indicating the size (number of logical blocks) constituting the video cell, and the like. CTIME describes 0 when the cell type is an interactive menu.
[0036]
The sequence information table 114 is defined as a set of areas 116 in which i pieces of sequence information (SI) describing the order of selecting and reproducing the cells 105 within the range specified for each sequence 106 are stored. In the sequence information (SI), the playback order of the video cells 105 recorded in the sequence 106 and playback control information related to playback are described. The sequence 106 includes a complete sequence that is completed in one sequence, and a connected sequence that is branched and connected to the next sequence for each sequence. The connected sequence includes a leading sequence of video data corresponding to multistory. A connected type head sequence that can be branched from this sequence and connected to the next sequence, that is, a connected type head sequence in which the story changes depending on how it is selected, or branched from another connected type sequence. Furthermore, there is a connection type intermediate sequence connected to another sequence and a connection type end sequence connected from another connection type sequence and ending the sequence, that is, a connection type end sequence in which the story ends in this sequence. The sequence information numbers are defined as sequence numbers 1 to i, and each start position information is written in the file management information table 113.
[0037]
FIG. 12 shows the contents of one sequence information (SI) stored in the sequence information table 114 in the file management information area 101 shown in FIG. As shown in FIG. 12, the sequence information area 116 describes the playback order of the video cells, sequence information, and the like. The sequence information (SI) number matches the sequence number, and is assigned to the sequence information table 114 in the order of the number. Sequence number 1 is a default reproduction sequence, and it is desirable that the arrangement of cells constituting the sequence should be continuous in a specified order. This sequence information 116 includes sequence type information (SCAT), number of configuration programs (SNPRG), number of configuration cells (SNCEL), sequence playback time (STIME), number of connected sequences (SNCSQ), sequence number list information (SCSQN), and It consists of sequence control information (SCINF).
[0038]
The sequence type information (SCAT) is a complete sequence that ends by playing back one sequence, or a video data start sequence corresponding to a multi-story, and can be branched from this sequence and connected to the next sequence. Any one of a connected type head sequence, a connected type intermediate sequence branched from another connected type sequence and connected to another sequence, and a connected type end sequence connected from another connected type sequence and ending the sequence Is described. The number of constituent programs (SNPRG) describes the number of programs constituting the sequence. The number of constituent cells (SNCEL) describes the total number of cells constituting the sequence. The sequence playback time (STIME) describes the total playback time of the sequence, and the connected sequence number information (SNCSQ) describes the number of sequences that can be connected to the sequence after playing the sequence in the connected sequence. In the sequence number list information (SCSQN), the numbers of connection destination sequences as many as the number described in the connection sequence number information (SNCSQ) are described as a list, and the sequence control information (SCINF) constitutes a sequence. The cell playback order is described, and according to this description, the cell is played back and the sequence is executed. A section in which one cell is selected and reproduced from a plurality of cells is described by a block as a set of cells, and the sequence of the block is executed by designating the block. In the sequence, a program is defined as a playback unit in which one or more cells having consecutive playback orders are combined, and the number is described. Program numbers in the sequence are assigned in ascending order from # 1.
[0039]
The file management table 113 shows specification information regarding the video file 78. In the file management table 113, the file name and a file identifier for identifying whether or not the file can be played back by the optical disc playback apparatus loaded with the optical disc are described. The file management table 113 also includes the start addresses of the sequence information table 114 and the cell information table 115, the number of sequence information 116 and cell information 117 described in the respective tables, and the relative distance from the head of the file 78. The start address of the sequence information table 114 indicated by the above, the start address of each sequence information 116 indicated by the relative distance from the head of the sequence information table 114, the start address of the video data 102, and information for reproducing each data The data attributes and the like are described.
[0040]
The file management table (FMT) 113 is composed of areas where a plurality of parameters are recorded. As shown in FIG. 13, each area includes a file name (FFNAME) and a file identifier as information for identifying a movie file. (FFID), size (FSZFMT) of file management table (FMT) described by the number of logical blocks, total number of sequences (FNSQ) existing in this file, number of cells (FNCEL) existing in this file, this file Sequence in this file indicated by the number of disk search information (DSI) packs (FNDSIP) present in the video data, the number of logical blocks corresponding to the size of this file (FNLB), and the offset logical block number from the beginning of the file Start address of information table 114 (FSAS T), the start address (FSACIT) of the cell information table 115 in this file indicated by the offset logical block number from the beginning of the file, and the disc search map start address in this file indicated by the offset logical block number from the beginning of the file ( FSADSM), the video data start address (FSADVD) in this file indicated by the offset logical block number from the beginning of the file, and the sequence information in the sequence information table 114 of this file described in sequence in the sequence information description order. The start address (offset byte number from the beginning of the sequence information table 114) and size (FSAESI), and in each sequence existing in this file described in sequence in the sequence information description order The minimum number of cells to be used and the number of cells between the minimum number and the maximum number (FSNCIB), the video data attribute (FVATR) 123 indicating the playback mode of the video data recorded in this file, and the same time as this video data The number of audio streams (FNAST) 124 indicating the number of audio data streams (data strings) recorded in this file that can be played back in the band, and the stream numbers corresponding to the number of these streams and the recording order corresponding to each number Audio stream attribute (FAATR) 125, sub-picture channel number (FNSPCH) 126 indicating the number of channels of sub-picture data recorded in this file that can be reproduced in the same time zone as the video data, and the number of these channels Individual sub-picture channel attributes that correspond only to channel numbers and recording order Parameters such as (FSPATR) 127, sub-picture color palette (FSPLT) used in all channels of video data for files, and vendor definition (FVDEF) for defining areas that can be freely used by vendors for specific applications are recorded. Has been.
[0041]
In FIG. 13, when the number of audio streams 124 is n, the subsequent audio data attributes 125 are continuously recorded in the order of stream numbers from # 1 to #n.
[0042]
Similarly to the above, when the number of sub-picture channels 126 is m, the following sub-picture data attributes 127 are continuously recorded in the order of channel numbers from # 1 to #m.
[0043]
Here, when the number of audio streams 124 or the number of sub-picture channels 126 is zero (0), the audio data attribute 125 or the sub-picture data attribute 127 is not recorded.
[0044]
Each item of the video data attribute 123 determines a playback mode related to video data recorded in a corresponding file.
[0045]
As shown in FIG. 14, the video data attribute (FVATR) 123 includes a video compression mode 131 indicating a video data encoding method such as MPEG1 and MPEG2, and a display aspect ratio of recorded video data is 3: 4. 9:16 display aspect ratio 132, NTSC (national television system committee), PAL (phase alternation by line) video signal frame rate 133, and partial omission (cutout) of display area for video data And a display mode 134 for permitting / prohibiting letterboxes in which black portions are formed above and below the display image.
[0046]
When the video compression mode 131 is 00H, it indicates that it is compliant with MPEG1, and when it is 01H, it indicates that it is compliant with MPEG2.
[0047]
The display aspect ratio 132 indicates 3: 4 video data when 00H, and 9:16 video data when 11H.
[0048]
The frame rate 133 indicates NTSC when 00H, and indicates PAL when 01H.
[0049]
When the display mode 134 is 00H, both pan scan and letterbox permission (cutout permission, reduction permission) is indicated. When 01H, pan scan is permitted (cutout permission) and letterbox is prohibited (reduction prohibition). In the case of 10H, pan scanning is prohibited (cutout prohibited) and letterbox is allowed (reduction allowed).
[0050]
Pan scan and letterbox are both screen conversion processes when video data (video software) recorded with a display aspect ratio of 9:16 is reproduced on a conventional monitor unit 6 with a display aspect ratio of 3: 4. For example, when video data recorded with a display aspect ratio of 9:16 is reproduced on the conventional monitor unit 6 with a display aspect ratio of 3: 4, it is reproduced as an image extending in the vertical direction ((a) of FIG. 24). Refer to the screen on the right side of (Direct). Thus, 9:16 video data is recorded as a screen extending in the vertical direction, and is generally called a squeeze (compressed) screen. When this squeeze screen is reproduced on the monitor unit 6 having a display aspect ratio of 9:16, the screen is displayed with a normal aspect ratio and full screen. Basically, the monitor unit 6 having a display aspect ratio of 3: 4 and the monitor unit 6 having a display aspect ratio of 9:16 have the same number of pixels displayed on the screen, and the display aspect ratio is 9:16. This is because the monitor unit 6 merely reproduces and displays video data having a display aspect ratio of 3: 4 in the horizontal direction by slightly extending it in the horizontal direction. Therefore, the video data recorded in advance in the horizontal direction so as to obtain a normal vertical / horizontal ratio when stretched in the horizontal direction at the ratio is video data having a display aspect ratio of 9:16.
[0051]
In this way, when video data (squeeze screen) with a display aspect ratio of 9:16 is reproduced and displayed on the monitor unit 6 with a display aspect ratio of 3: 4 as it is, the video is elongated in the vertical direction and is difficult to see. The conversion processing for reproducing and displaying the squeeze screen with the normal aspect ratio is pan scan and letter box.
[0052]
In the pan scan, a squeeze screen is reproduced and displayed by cutting an angle of view of a display aspect ratio of 3: 4 from a screen reproduced by the monitor unit 6 having a display aspect ratio of 9:16. In this case, for example, as in the screen on the left side of FIG. 24 (a), a part (both ends) of the original video data for one screen is missing.
[0053]
This pan scan conversion process is performed by an MPEG2 decoder 58d, which will be described later, in the video decoder unit 58.
[0054]
The letterbox conversion is basically processing for fitting all the 9:16 angle of view into the 3: 4 angle of view while maintaining the normal aspect ratio. Therefore, the phenomenon of partial omission of video data (screen information) that occurs in pan scanning can be avoided, but black band portions where no video is displayed appear above and below the screen of the monitor unit 6 (see (a) of FIG. 24). (See the middle screen).
[0055]
This letterbox conversion process is performed by a letterbox converter 204 in the video reproduction processing unit 201 described later.
[0056]
As a result, in the format of the optical disk 10, when the video data having a display aspect ratio of 9:16 is recorded on the optical disk 10 and reproduced and displayed on the monitor unit 6 having a display aspect ratio of 3: 4, Which of the letterbox conversion is permitted or prohibited can be restricted by the intention of the producer of the optical disc 10 by setting the display mode.
[0057]
Each item of the audio stream attribute (FAATR) 125 determines a playback mode related to audio data recorded in the file.
[0058]
As shown in FIG. 15, the audio data attribute 125 includes an audio compression mode 151 indicating an encoding method of audio data such as MPEG1, AC3, and linear PCM, and an audio indicating an audio reproduction mode such as stereo, monaural, and digital surround. Mode 152, audio type 153 in which the content of the audio data indicates music / language (sound), etc., mixing 154 indicating whether the audio stream can be mixed, and whether it can be reproduced independently (master / slave), as described above When mixing is possible with the mixing 154 and independent playback is not possible (slave), the master stream number 155 that specifies the master stream number that can be mixed, and when the audio type 153 is the language (voice), the audio stream Word Composed of language code 156 and the like showing the.
[0059]
Each item of the sub-picture channel attribute (FSPATR) 127 determines a playback mode related to sub-picture data recorded in the corresponding file.
[0060]
As shown in FIG. 16, the sub-picture data attribute 127 includes a sub-picture compression mode 171 indicating a sub-picture data encoding method such as Raw (unprocessed), Run-length (run length), and the like. When the content is a sub-picture type 172 indicating a picture / language (subtitle) or the like, and the above-mentioned sub-picture type 172 is a language (caption), a language code 173 indicating the language of the sub-video channel is included.
[0061]
Next, a configuration example of the video decoder unit 58, the audio decoder unit 60, the sub video decoder unit 62, and the D / A & reproduction processing unit 64 corresponding to the video data attribute 123, the audio data attribute 125, and the sub video data attribute 127 will be described. explain.
[0062]
As shown in FIG. 17, the video decoder unit 58 includes a register 58a, a selector 58b, an MPEG1 decoder 58c, and an MPEG2 decoder 58d.
[0063]
The register 58a holds a control signal (in accordance with the encoding method) supplied from the system CPU unit 50 via the system processor unit 54, and its output is output to the selector 58b. The selector 58b selectively outputs the video data supplied from the system processor unit 54 to the MPEG1 decoder 58c or the MPEG2 decoder 58d according to the output from the register 58a. The MPEG1 decoder 58c decodes the video data from the selector 58b using the MPEG1 encoding method. The MPEG2 decoder 58d decodes the video data from the selector 58b by the MPEG2 encoding method. The decoder output from the MPEG1 decoder 58c or the MPEG2 decoder 58d is output as a decoder output of the video decoder unit 58 to a video playback processing unit 201 described later in the D / A & playback processing unit 64.
[0064]
In addition, a control signal indicating whether or not to perform pan scan supplied from the system CPU 50 via the system processor 54 is supplied to the MPEG2 decoder 58d. Thereby, the MPEG2 decoder 58d performs the pan scan process and outputs it when the pan scan process is instructed by the control signal. The pan scan process is a process of cutting out only the video data of the portion corresponding to 3: 4 by removing the images at both ends of the video data of the display aspect ratio of 9:16.
[0065]
As shown in FIG. 18, the audio decoder unit 60 includes a register 60a, a selector 60b, an MPEG1 decoder 60c, an AC3 decoder 60d, and a PCM decoder 60e.
[0066]
The register 60a holds a control signal supplied from the system CPU unit 50 via the system processor unit 54, and its output is output to the selector 60b. The selector 60b selectively outputs the audio data supplied from the system processor unit 54 to the MPEG1 decoder 60c, the AC3 decoder 60d, or the PCM decoder 60e in accordance with the output from the register 60a. The MPEG1 decoder 60c decodes the audio data from the selector 60b by the MPEG1 encoding method. The AC3 decoder 60d decodes the audio data from the selector 60b by the AC3 encoding method. The PCM decoder 60e decodes digital audio data from the selector 60b into analog audio data.
[0067]
The decoder output from the MPEG1 decoder 60c, AC3 decoder 60d, or PCM decoder 60e is output as a decoder output of the audio decoder unit 60 to an audio playback processing unit 202 (to be described later) in the D / A & playback processing unit 64.
[0068]
As shown in FIG. 19, the sub-picture decoder unit 62 includes a register 62a, a selector 62b, a bitmap decoder 62c, and a run-length decoder 62d.
[0069]
The register 62a holds a control signal supplied from the system CPU unit 50 via the system processor unit 54, and its output is output to the selector 62b. The selector 62b selectively outputs the sub-picture data supplied from the system processor unit 54 to the bitmap decoder 62c or the run-length decoder 62d according to the output from the register 62a.
[0070]
The bitmap decoder 62c decodes the sub-picture data from the selector 62b by a bitmap encoding method. The run-length decoder 62d decodes the sub-picture data from the selector 62b by the run-length encoding method.
[0071]
As shown in FIG. 1, the D / A & playback processing unit 64 includes a video playback processing unit 201, an audio playback processing unit 202, an audio mixing unit 203, and a sub-video playback processing unit 207.
[0072]
As shown in FIG. 20, the video reproduction processing unit 201 includes a letterbox converter 204 having a memory therein, a digital NTSC / PAL converter 205 having a video formatter (color difference signal conversion) function, and a D / A converter. 206.
[0073]
The letterbox converter 204 performs a letterbox conversion process on the video data supplied from the video decoder 58 according to a control signal supplied from the system CPU 50 via the system processor 54, or The letterbox conversion process is performed without performing the letterbox conversion process. In the letterbox conversion process, for example, video data having an aspect ratio of 9:16 is compressed in the vertical direction. When displaying on the monitor 6 (both display aspect ratios of 3: 4 and 9:16), black portions are formed at the top and bottom of the image, so it is said to be a letterbox.
[0074]
The digital / NTSC / PAL converter 205 converts the video data from the letterbox converter 204 into the NTSC format according to the control signal supplied from the system CPU unit 50 via the system processor unit 54, It converts to the PAL format. The output from the digital / NTSC / PAL converter 205 is converted to analog data by the D / A converter 206 and then output to the monitor unit 6.
[0075]
As shown in FIG. 21, the audio reproduction processing unit 202 includes a register 202a, a selector 202b, a stereo output unit 202c, a monaural output unit 202d, and a surround output unit 202e.
[0076]
The register 202a holds a control signal supplied from the system CPU unit 50 via the system processor unit 54, and its output is output to the selector 202b. The selector 202b selectively outputs the audio data supplied from the audio decoder unit 60 to the stereo output unit 202c, monaural output unit 202d, or surround output unit 202e in accordance with the output from the register 202a. . The stereo output unit 202c converts the audio data from the selector 202b into stereo data. The monaural output unit 202d converts the audio data from the selector 202b into monaural data. The surround output unit 202e converts the audio data from the selector 202b into surround data. The output from the stereo output unit 202 c, monaural output unit 202 d, or surround output unit 202 e, that is, the output of the audio reproduction processing unit 202 is output to the audio mixing unit 203.
[0077]
As shown in FIG. 22, the audio mixing unit 203 includes a register 203a, a register 203b, a selector 203c, a first stream processing unit 203d, a second stream processing unit 203e, and a mixing processing unit 203f.
[0078]
The registers 203a and 203b hold control signals supplied from the system CPU unit 50 via the system processor unit 54. The output of the register 203a is output to the selector 203c, and the output of the register 203b is The data is output to the mixing processing unit 203f. The selector 203c selectively outputs the audio data supplied from the audio reproduction processing unit 202 to the first stream processing unit 203d or the second stream processing unit 203e according to the output from the register 203a. . The first stream processing unit 203d converts the audio data from the selector 203c into data of the first stream. The second stream processing unit 203e converts the audio data from the selector 203c into second stream data. The output from the first stream processing unit 203d or the second stream processing unit 203e is output to the mixing processing unit 203f. The mixing processing unit 203f performs mixing processing according to the output from the register 203a, and outputs the data after the mixing processing to the speaker 8 or the like as the output of the audio mixing unit 203.
[0079]
Next, the playback operation of movie data from the optical disk 10 having the logical format shown in FIGS. 6 to 16 will be described with reference to FIG. 1 again. In FIG. 1, a solid line arrow between blocks indicates a data bus, and a broken line arrow indicates a control bus.
[0080]
In the optical disk apparatus shown in FIG. 1, when the power is turned on, the system CPU section 50 reads the initial operation program from the system ROM and RAM 52 and operates the disk drive section 30. Therefore, the disk drive unit 30 starts a read operation from the lead-in area 27 and reads volume management information from the volume management information area 74 of the volume management area 70 following the lead-in area 27. That is, the system CPU unit 50 gives a read command to the disk drive unit 30 in order to read the volume management information from the volume management information area 74 recorded at a predetermined position of the disk 10 set in the disk drive unit 30. The contents of the volume management information are read out and temporarily stored in the data RAM unit 56 via the system processor unit 54. The system CPU unit 50 extracts information such as the recording position and recording capacity of each file and other information necessary for management from the data string of the volume management information stored in the data RAM unit 56, and stores predetermined information in the system ROM & RAM unit 52. Transfer to a location and save.
[0081]
Next, the system CPU unit 50 acquires the disk information file 76 corresponding to the file number 0 from the system ROM & RAM unit 52 with reference to the previously acquired information on the recording position and recording capacity of each file. That is, the system CPU unit 50 gives a read command to the disk drive unit 30 by referring to the recording position and recording capacity information of each file obtained from the system ROM and RAM unit 52, and the file number is The file management information of the disk information file 76 that is 0 is read and stored in the data RAM unit 56 via the system processor unit 54. Similarly, the acquired information is transferred to a predetermined location in the system ROM & RAM unit 52 and stored.
[0082]
The system CPU unit 50 uses the disc configuration information, menu configuration information, and cell information of the file management information of the disc information file 76 to reproduce the sequence (title) selection menu in the menu video data area 84, as will be described later. On the screen.
[0083]
The user designates selection of a sequence (title) to be reproduced by using the key operation unit and the display unit 4 based on the selection number written on the displayed menu screen. As a result, the file number and sequence information to which the selected sequence belongs are specified. In selecting the sequence, there are a case where all sequences are selected based on the menu screen, and a case where the top sequence is selected and the next sequence is selected from the menu cell included in the video cell at the end of the sequence.
[0084]
Next, the operation until the designated video file 78 is acquired and the video data 102 is reproduced will be described. In order to acquire the sequence information for the specified sequence number, first, the file of the video file 78 to which the sequence to be reproduced belongs is used by using the recording position and recording capacity of each video file 78 obtained from the volume management information 74. The management information 101 is read out and stored in the data RAM unit 56 as in the case of the disk information file 76 described above.
[0085]
The system CPU unit 50 acquires the video attribute 123, the audio stream attribute 125, and the sub-picture channel attribute 127 from the file management table 113 of the file management information stored in the data RAM unit 56, and outputs a control signal in accordance with these attributes to the video. The data is output to the decoder unit 58, the audio decoder unit 60, the sub video decoder unit 62, the video playback processing unit 201, the audio playback processing unit 202, the audio mixing unit 203, and the sub video playback processing unit 207.
[0086]
The system CPU unit 50 acquires sequence information corresponding to the designated sequence number from the sequence information table 114 in the file management information area 101 stored in the data RAM unit 56, and reproduces the data and the sequence. The cell information in the necessary cell information table 115 is transferred to the system ROM & RAM unit 52 and stored.
[0087]
The cell information to be reproduced first is obtained from the cell reproduction order information in the sequence information obtained in this way, and the disc drive unit 30 is provided with the object based on the video data reproduction start address and size in the cell information. A read command from the address is given. The disk drive unit 30 drives the optical disk 10 in accordance with a read command, reads data at a target address from the optical disk 10, and sends it to the system processor unit 54. The system processor unit 54 temporarily stores the transmitted data in the data RAM unit 56, and determines the type of data (video, audio, sub-picture, reproduction information, etc.) based on the header information added to the data. Then, the data is transferred to the decoder units 58, 60 and 62 corresponding to the determined type.
[0088]
Each decoder unit 58, 60, 62 decodes data in accordance with the respective data format and the set encoding method, and the video reproduction processing unit 201, audio reproduction processing unit 202, subordinate in the D / A & reproduction processing unit 64. The image is sent to the video reproduction processing unit 207. The video reproduction processing unit 201 converts the digital signal resulting from the decoding of the video data into an analog signal, and then performs frame rate processing, aspect processing, pan scanning processing, and the like according to the set conditions and outputs the result to the monitor unit 6. The After the audio reproduction processing unit 202 converts the decoding result of the audio data into an analog signal according to the set condition, the audio mixing unit 203 performs the mixing process according to the set condition and applies it to the speaker unit 8. Is output. Sub-video reproduction processing unit 207 converts the digital signal resulting from the decoding of the sub-video data into an analog signal, and then outputs the analog signal to monitor unit 6.
[0089]
In the data type determination process, if the data is reproduction information indicating the reproduction position of the video data, the reproduction information is not transferred to the decoder, and the reproduction data is stored in the data RAM unit 56. Is done. The reproduction information is referred to as necessary by the system CPU unit 50 and used for monitoring when reproducing the video data.
[0090]
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 sequence information, and the reproduction is continued in the same manner.
[0091]
Next, video data attribute acquisition / setting processing in this optical disc playback apparatus will be described with reference to the flowchart shown in FIG.
[0092]
That is, the system CPU unit 50 controls the disk drive unit 30 to read a file designated by the user having a file structure as shown in FIG. 8 from the optical disk 10 and temporarily store it in the data RAM unit 56.
[0093]
The system CPU unit 50 acquires the video data attribute 123 recorded in the file management information in the file management information area 101 of the designated file stored in the data RAM unit 56 (S1).
[0094]
The system CPU unit 50 determines whether the video compression mode 131 described in the acquired video data attribute 123 complies with MPEG1 or MPEG2, and sends a control signal corresponding to the determination result to the video decoder unit 58. Is output to the register 58a (S2).
[0095]
As a result, the selector 58b is switched in accordance with the control signal supplied to the register 58a. When the video compression mode 131 conforms to MPEG1, the selector 58b is switched to the MPEG1 decoder 58c side (S3), and the video compression mode is selected. If 131 complies with MPEG2, the selector 58b is switched to the MPEG2 decoder 58d side (S4).
[0096]
Further, the system CPU 50 determines whether the frame rate 133 described in the acquired video data attribute 123 is NTSC or PAL (S5), and outputs a control signal corresponding to the determination result to D / The data is output to the digital / NTSC / PAL converter 205 in the video reproduction processing unit 201 in the A & reproduction processing unit 64.
[0097]
Accordingly, the digital / NTSC / PAL converter 205 sets the digital video conversion to NTSC according to the supplied control signal (S6) or sets the digital video conversion to PAL (S7).
[0098]
Further, the system CPU 50 determines whether the display aspect ratio 132 described in the acquired video data attribute 123 is 3: 4 or 9:16 (S8).
[0099]
When the determination result is 3: 4, the system CPU unit 50 is set to the direct display mode (S9). At this time, the system CPU unit 50 outputs a control signal indicating prohibition of letterbox conversion processing to the letterbox converter 204 in the video reproduction processing unit 201 in the D / A & reproduction processing unit 64 via the system processor unit 54. . Thereby, letterbox conversion processing by the letterbox converter 204 is prohibited.
[0100]
Further, the system CPU unit 50 outputs a control signal indicating prohibition of pan scan processing to the MPEG2 decoder 58d in the video decoder unit 58 via the system processor unit 54. As a result, pan scan processing by the MPEG2 decoder 58d is prohibited.
[0101]
If the determination result in step 8 is 9:16, the system CPU 50 determines whether the display mode 134 described in the acquired video data attribute 123 is 00H, 01H, or 10H ( S10, S12).
[0102]
As a result, in the case of 00H, the system CPU section 50 determines both pan scan and letterbox permission modes, and is set to that mode (S11). In the case of 10H, the mode of letterbox permission is determined by prohibiting pan scanning, and the mode is set (S14).
[0103]
When letterboxing is prohibited in step 13, the system CPU 50 sends a control signal indicating that letterbox conversion processing is prohibited in the video playback processing unit 201 in the D / A & playback processing unit 64 via the system processor unit 54. To the letterbox converter 204. Thereby, letterbox conversion processing by the letterbox converter 204 is prohibited.
[0104]
When pan scanning is prohibited in step 14, the system CPU unit 50 outputs a control signal indicating prohibition of pan scanning processing to the MPEG2 decoder 58 d in the video decoder unit 58 via the system processor unit 54. As a result, pan scan processing by the MPEG2 decoder 58d is prohibited.
[0105]
The processing when the video data reproduced from the optical disc 10 is displayed on the monitor unit 6 in the state where the video data attribute is acquired and set in the optical disc reproducing apparatus as described above is shown in FIGS. This will be described with reference to the display example shown.
[0106]
For example, when video data having a display aspect ratio of 9:16 is reproduced and displayed on the monitor unit 6 having a display aspect ratio of 3: 4, the display mode is set to allow both pan scan and letterbox. In this case, a letterbox image shown in FIG. 24A is displayed at the initial stage. In this state, every time the shape key 5n of the remote controller 5 is turned on, the direct image, the pan scan image, and the letter box image are cyclically displayed on the monitor unit 6 in order. The initial image may be a direct image or a pan scan image.
[0107]
In addition, when video data having a display aspect ratio of 9:16 is reproduced and displayed on the monitor unit 6 having a display aspect ratio of 3: 4, the display mode is a mode in which the pan scan is prohibited and the letter box is allowed. Initially, a letterbox image shown in FIG. 24B is displayed. In this state, every time the shape key 5n of the remote controller 5 is turned on, a direct image and a letterbox image are cyclically displayed in order on the monitor unit 6. The initial image may be a direct image.
[0108]
In addition, when video data having a display aspect ratio of 9:16 is played back and displayed on the monitor unit 6 having a display aspect ratio of 3: 4, the display mode is a mode in which pan scanning is permitted and a letter box is prohibited. In the initial stage, a pan scan image shown in FIG. 24C is displayed. In this state, every time the shape key 5n of the remote controller 5 is turned on, a direct image and a pan scan image are cyclically displayed in order on the monitor unit 6. The initial image may be a direct image.
[0109]
Also, when video data having a display aspect ratio of 9:16 is played back and displayed on the monitor unit 6 having a display aspect ratio of 9:16, the display mode is a permission mode for both pan scan and letterbox. In this case, a direct image shown in FIG. 25A is displayed at the initial stage. In this state, every time the shape key 5n of the remote controller 5 is turned on, the monitor unit 6 cyclically displays a pan scan image, a letterbox image, and a direct image in order. The initial image may be a letterbox image or a pan scan image.
[0110]
Also, when video data with a display aspect ratio of 9:16 is played back and displayed on the monitor unit 6 with a display aspect ratio of 9:16, the display mode is a mode in which the pan scan is prohibited and the letter box is allowed. In the initial stage, a direct image shown in FIG. 25B is displayed. In this state, every time the shape key 5n of the remote controller 5 is turned on, the letter 6 image and the direct image are cyclically displayed on the monitor unit 6 in order. The initial image may be a letterbox image.
[0111]
Also, when video data with a display aspect ratio of 9:16 is played back and displayed on the monitor unit 6 with a display aspect ratio of 9:16, the display mode is a mode in which pan scanning is permitted and letterbox is prohibited. In the initial stage, a direct image shown in FIG. 25C is displayed. In this state, every time the shape key 5n of the remote controller 5 is turned on, the pan scan image and the direct image are cyclically displayed in order on the monitor unit 6. The initial image may be a pan scan image.
[0112]
In the above embodiment, the case where the display mode is set regardless of the display aspect ratio of the monitor unit has been described. However, the present invention is not limited to this, and the display mode is switched according to the display aspect ratio of the connected monitor unit. You may do it.
[0113]
An embodiment in this case will be described with reference to FIGS.
[0114]
FIG. 26 shows a rear panel on the back surface of the optical disk reproducing apparatus. The rear panel is provided with video output terminals 250 and 251, a connected TV changeover switch 252, audio output terminals 253 and 254, and a power cord 255. ing.
[0115]
The connection television change-over switch 252 switches and designates whether the display aspect ratio of the television serving as the monitor unit 6 connected to the optical disk reproducing apparatus is 9:16 or 3: 4. The setting state of the connection television changeover switch 252 is output to the system CPU unit 50.
[0116]
Next, video data attribute acquisition / setting processing in this optical disc playback apparatus will be described with reference to the flowchart shown in FIG. However, steps 1 to 7 operate in the same manner as in the flowchart shown in FIG.
[0117]
That is, after the setting in step 6 or step 7 is made, the system CPU unit 50 determines the display aspect of the connected monitor unit 6 depending on whether the setting state of the connection television changeover switch 252 is 9:16 side or 3: 4 side. It is determined whether the ratio is 9:16 or 3: 4 (S15).
[0118]
When the determination result is 9:16, the system CPU unit 50 is set to the direct reproduction display mode (S9 ′). At this time, the system CPU unit 50 outputs a control signal indicating prohibition of letterbox conversion processing to the letterbox converter 204 in the video reproduction processing unit 201 in the D / A & reproduction processing unit 64 via the system processor unit 54. . Thereby, letterbox conversion processing by the letterbox converter 204 is prohibited.
[0119]
Further, the system CPU unit 50 outputs a control signal indicating prohibition of pan scan processing to the MPEG2 decoder 58d in the video decoder unit 58 via the system processor unit 54. As a result, pan scan processing by the MPEG2 decoder 58d is prohibited.
[0120]
If the determination result in step 15 is 3: 4, the system CPU 50 determines whether the display aspect ratio 132 described in the acquired video data attribute 123 is 3: 4 or 9:16. It is determined whether or not there is (S8 ').
[0121]
When the determination result is 3: 4, the system CPU unit 50 is set to the direct reproduction display mode (S9 ′).
[0122]
When the determination result in step 8 ′ is 9:16, the system CPU 50 determines whether the display mode 134 described in the acquired video data attribute 123 is 00H, 01H, or 10H. (S10 ', S12').
[0123]
As a result, in the case of 00H, the system CPU section 50 determines both pan scan and letterbox permission modes, and is set to the pan scan or letterbox playback display mode (S11 ′). The letterbox prohibition mode is determined by scanning permission, and the playback display mode in pan scanning is set (S13 '). In the case of 10H, the letterbox permission mode is determined by prohibiting pan scanning, and playback display in the letterbox is performed. The mode is set (S14 ′).
[0124]
When letterboxing is prohibited in step 13, the system CPU 50 sends a control signal indicating that letterbox conversion processing is prohibited in the video playback processing unit 201 in the D / A & playback processing unit 64 via the system processor unit 54. To the letterbox converter 204. Thereby, letterbox conversion processing by the letterbox converter 204 is prohibited.
[0125]
When pan scanning is prohibited in step 14, the system CPU unit 50 outputs a control signal indicating prohibition of pan scanning processing to the MPEG2 decoder 58 d in the video decoder unit 58 via the system processor unit 54. As a result, pan scan processing by the MPEG2 decoder 58d is prohibited.
[0126]
As shown in FIG. 28, the processing when the video data reproduced from the optical disc 10 is displayed on the monitor unit 6 in the state where the video data attribute is acquired and set in the optical disc reproducing apparatus as described above. Will be described with reference to FIG.
[0127]
For example, when video data having a display aspect ratio of 9:16 is reproduced and displayed on the monitor unit 6 having a display aspect ratio of 3: 4, the playback display mode is in pan scan or letterbox. Initially, a letterbox image shown in FIG. 28A is displayed. In this state, every time the shape key 5n of the remote controller 5 is turned on, the pan scan image and the letter box image are cyclically displayed in order on the monitor unit 6. The initial image may be a pan scan image.
[0128]
Further, when the video data having the display aspect ratio of 9:16 is reproduced and displayed on the monitor unit 6 having the display aspect ratio of 3: 4, and in the letterbox reproduction display mode, (b) of FIG. ), A letterbox image is displayed. In this state, even if the shape key 5n of the remote controller 5 is turned on, only the letterbox image is displayed on the monitor unit 6.
[0129]
Further, when the video data having the display aspect ratio of 9:16 is reproduced and displayed on the monitor unit 6 having the display aspect ratio of 3: 4, when the playback display mode of the pan scan is set, (c) of FIG. ), A pan scan image is displayed. In this state, even when the shape key 5n of the remote controller 5 is turned on, only the pan scan image is displayed on the monitor unit 6.
[0130]
Further, when video data having a display aspect ratio of 9:16 is reproduced and displayed on the monitor unit 6 having a display aspect ratio of 9:16, a direct image is always displayed.
[0131]
Therefore, in the above case, by setting the display aspect ratio of the monitor unit connected to the optical disc playback apparatus in advance, it is possible to avoid screen playback with an abnormal aspect ratio.
[0132]
Next, audio data attribute acquisition / setting processing in this optical disc playback apparatus will be described with reference to the flowchart shown in FIG.
[0133]
First, the system CPU unit 50 controls the disk drive unit 30 to read a file designated by the user having a file structure as shown in FIG. 8 from the optical disk 10 and temporarily stores it in the data RAM unit 56 (S20).
[0134]
The system CPU unit 50 acquires the number of audio streams 124 (n) recorded in the file management information in the file management information area 101 of the designated file stored in the data RAM unit 56 (S21).
[0135]
The audio stream number to be selected is designated by the user (S32).
[0136]
The system CPU unit 50 acquires the audio attribute 125 corresponding to the stream number specified by the user from the n audio data attribute groups 125 recorded in the file management information of the specified file stored in the data RAM unit 56 (S22).
[0137]
The system CPU unit 50 determines whether the audio compression mode 151 described in the acquired audio data attribute 125 conforms to MPEG1 or linear PCM, and sends a control signal corresponding to the determination result to the audio decoder unit. 60 to the 60 registers 60a (S23).
[0138]
As a result, the selector 60b is switched according to the control signal supplied to the register 60a, and when the audio compression mode 151 conforms to MPEG1, the audio data from the system processor unit 54 is sent to the MPEG1 decoder 60c via the selector 60b. When the audio compression mode 151 conforms to AC3, the audio data from the system processor unit 54 is supplied to the AC3 decoder 60d via the selector 60b, and the video compression mode 131 conforms to linear PCM. In this case, the audio data from the system processor unit 54 is supplied to the PCM decoder 60e via the selector 60b.
[0139]
Further, the system CPU unit 50 determines whether the audio mode 152 described in the acquired audio data attribute 125 is stereo, monaural, or surround, and performs audio reproduction processing on a control signal corresponding to the determination result. The data is output to the register 202a in the unit 202 (S24).
[0140]
Thereby, the selector 202b is switched according to the control signal supplied to the register 202a, and when the audio mode 152 is stereo, the audio data from the audio decoder unit 60 is supplied to the stereo output unit 202c via the selector 202b. When the audio mode 152 is monaural, audio data from the audio decoder unit 60 is supplied to the monaural output unit 202d via the selector 202b. When the audio mode 152 is surround, the audio data from the audio decoder unit 60 is sent to the selector 202b. To the surround output unit 202e.
[0141]
Next, the system CPU unit 50 determines whether the mixing 154 described in the acquired audio data attribute 125 is impossible to mix, a master stream that can be mixed, or a slave stream that can be mixed. Then, a control signal corresponding to the determination result is output to the registers 203a and 203b of the audio mixing unit 203 (S25).
[0142]
As a result, the selector 203c is switched in accordance with the control signal supplied to the register 203a, and in the case of a master stream that can be mixed, the stream is supplied to the first stream processing unit 203d as the first stream and can be mixed. In this case, the stream is supplied as the second stream to the second stream processing unit 203e, and in the case of an independent stream that cannot be mixed, the stream is supplied as the first stream to the first stream processing unit 203d (S25 to S29). ).
[0143]
In addition, when the processing of the mixing processing unit 203f is switched in accordance with the control signal supplied to the register 203b and mixing is possible, the first stream of the first stream processing unit 203d and the second stream of the second stream processing unit 203e When mixing processing is performed and output to the speaker unit 8 and mixing is impossible, only the first stream of the first stream processing unit 203 d is output to the speaker unit 8.
[0144]
Further, the system CPU unit 50 determines whether or not the audio type 153 described in the acquired audio data attribute 125 is a language (S30), and when the determination result is a language, the language code 156 The language code is acquired, the corresponding language name is determined from the language code table stored in advance in the system ROM & RAM unit 52, and is indicated by the monitor unit 6 or the like (S31).
[0145]
Conversely, when a language code is designated by the user, an audio stream having a target language code can be specified from the number of audio streams 124 and the audio data attribute 125.
[0146]
Further, when an audio stream number switching instruction is issued during data reproduction due to a user event or the like (S32), audio data attribute acquisition setting is performed by the processing from S22 to S31 described above.
[0147]
Next, sub-picture data attribute acquisition / setting processing in this optical disc playback apparatus will be described with reference to the flowchart shown in FIG.
[0148]
First, the system CPU unit 50 controls the disk drive unit 30 to read a file designated by the user having a file structure as shown in FIG. 8 from the optical disk 10 and temporarily stores it in the data RAM unit 56 (S40).
[0149]
The system CPU unit 50 obtains 126 (m) sub-picture channels recorded in the file management information of the designated file stored in the data RAM unit 56 (S41).
[0150]
The user designates the sub video channel number to be selected (S46).
[0151]
The system CPU unit 50 acquires the sub video data attribute 127 corresponding to the channel number designated by the user from the m sub video data attribute groups 127 recorded in the designated file management information stored in the data RAM unit 56 (S42). .
[0152]
The system CPU unit 50 determines whether the sub-video compression mode 171 described in the acquired sub-video data attribute 127 is Raw (corresponding to a bitmap) or run length, and according to the determination result The control signal is output to the register 62a of the sub-picture decoder 62 (S43).
[0153]
As a result, when the selector 62b is switched in accordance with the control signal supplied to the register 62a and the sub-picture compression mode 171 corresponds to the bitmap, the sub-picture data from the system processor unit 54 is sent via the selector 62b. When supplied to the bitmap decoder 62c and the sub video compression mode 171 corresponds to run length, the sub video data from the system processor unit 54 is supplied to the run length decoder 62d via the selector 62b.
[0154]
Further, the system CPU unit 50 determines whether or not the sub-video type 172 described in the acquired sub-video data attribute 127 is a language (S44), and if this determination result is a language, the language code From 173, the language code is acquired, the corresponding language name is determined from the language code table stored in advance in the system ROM & RAM unit 52, and is indicated by the monitor unit 6 or the like (S45).
[0155]
On the contrary, when the language code is designated by the user, the sub-picture channel having the target language code can be specified from the sub-picture channel number 126 and the sub-picture data attribute 127.
[0156]
Further, when there is an instruction to switch the sub video channel number due to a user event or the like during data reproduction (S46), acquisition setting of the sub video data attribute is performed by the processing from S42 to S45.
[0157]
What has been described above has been mainly focused on video data. However, as other application examples, when recording is performed with only a single audio data, when there are a plurality of audio data, or when the compression mode is different, the audio is recorded. It is also possible to configure without using video data, such as when it is composed of data and sub-picture data, or only sub-picture data.
[0158]
It is also possible to record a plurality of different video data such as compression modes, and the present invention does not necessarily limit the combination of the data.
[0159]
Next, with reference to FIGS. 31 and 40, video data in a logical format shown in FIGS. 6 to 16, a recording method on the optical disk 10 for reproducing the video data, and a recording system to which the recording method is applied. explain.
[0160]
FIG. 31 shows an encoder system that generates video files by encoding video data. In the system shown in FIG. 31, as a source of main video data, audio data, and sub-picture data, for example, a video tape recorder (VTR) 211, an audio tape recorder (ATR) 212, and a sub-picture player (Subpicture source) 213 are used. Is adopted. These generate main video data, audio data, and sub-video data under the control of the system controller (Sys con) 215, which are a video encoder (VENC) 216, an audio encoder (AENC) 217, and a sub-video encoder (SPENC), respectively. ), And is also A / D converted by these encoders 216, 217, and 218 under the control of the system controller (Sys con) 215, encoded by the respective compression methods, encoded main video data, audio Data and sub-picture data (Comp Video, Comp Audio, Comp Sub-pict) are stored in the memories 220, 221, and 222. The main video data, audio data, and sub-video data (Comp Video, Comp Audio, Comp Sub-pict) are output to a file formatter (FFMT) 224 by a system controller (Sys con) 215, and this system as already described. Are converted into the file structure of the video data and information such as setting conditions and attributes of each data is stored in the memory 226 by the system controller (Sys con) 215 as a file.
[0161]
A standard flowchart of encoding processing in the system controller (Sys con) 215 for creating a file from video data will be described below.
[0162]
According to the flowchart shown in FIG. 32, the main video data and audio data are encoded to generate encoded main video and audio data (Comp Video, Comp Audio). That is, when the encoding process is started, parameters necessary for encoding main video data and audio data are set as shown in step 70 of FIG. Some of the set parameters are stored in the system controller (Sys con) 215 and used by the file formatter (FFMT) 224. As shown in step S71, the main video data is pre-encoded using the parameters, and an optimal code amount distribution is calculated. As shown in step S72, the main video is encoded based on the code amount distribution obtained by the pre-encoding. At this time, audio data is also encoded at the same time. If necessary, as shown in step S73, partial re-encoding of the main video data is executed, and the re-encoded main video data is replaced. Main video data and audio data are encoded by this series of steps. Also, as shown in steps S74 and S75, the sub-picture data is encoded to generate encoded sub-picture data (Comp Sub-pict). That is, parameters necessary for encoding the sub-picture data are set similarly. Some of the parameters set as shown in step S74 are stored in the system controller (Sys con) 215 and used by the file formatter (FFMT) 224. Sub-picture data is encoded based on this parameter. By this process, the sub-picture data is encoded.
[0163]
According to the flowchart shown in FIG. 33, the encoded video data, audio data, and sub-video data (Comp Video, Comp Audio, Comp Sub-pict) are combined into a video data file as described with reference to FIG. Converted to a structure. That is, as shown in step S76, the cell 105 as a minimum unit of video data is set, and a cell information table (CIT) 115 is created. Next, as shown in step S77, the configuration of the cell 105 constituting the sequence 106, the main video, the sub video, the audio attribute, etc. are set (some of these attribute information includes information obtained at the time of each data encoding). File management information (FMI) including the cell information table (CIT) 115 is created. Encoded main video data, audio data, and sub-video data (Comp Video, Comp Audio, Comp Sub-pict) are subdivided into fixed packs, and can be played back in order of the time code of each data. Each data cell is arranged while a control pack (DSI) 92 is inserted, and is formatted into a structure of a file 78 such as a disc information file 76 and a movie file as shown in FIGS.
[0164]
In the flowchart shown in FIG. 33, the sequence information is obtained by using the database of the system controller (Sys con) 215 in the process of step S77, or by re-inputting data as necessary. It is described in the sequence information table (SIT) 114.
[0165]
FIG. 34 shows a disk formatter system for recording files 76 and 78 formatted as described above onto an optical disk. As shown in FIG. 34, in the disk formatter system, these file data are supplied to the volume formatter (VFMT) 236 from the memories 230 and 232 in which the created information file 76 and file 78 such as a movie file are stored. In the volume formatter (VFMT) 236, in addition to the files 76 and 78, disc volume information 74 is added in the arrangement order shown in FIG. 6, and logical data in a state to be recorded on the disc 10 is created. Error correction data is added to the logical data created by the volume formatter (VFMT) 236 in the disk formatter (DFMT) 238, and reconverted into physical data to be recorded on the disk. In the modulator 240, the physical data created by the disk formatter (DFMT) 238 is converted into recording data to be actually recorded on the disk, and this modulated recording data is recorded on the disk 10 by the recorder 242. To be recorded.
[0166]
A standard flowchart for creating the above-described disc will be described with reference to FIGS. FIG. 35 shows a flowchart for creating logical data to be recorded on the disk 10. That is, as shown in step S80, parameter data such as the number of video data files, the arrangement order, and the size of each video data file are set first. Next, volume information is created from the parameters set in step S81 and the file management information of each video data file. Thereafter, as shown in step S82, the data is arranged along the corresponding logical block number in the order of volume information and video data file, and logical data to be recorded on the disk 10 is created.
[0167]
Thereafter, a flowchart for creating physical data to be recorded on the disc as shown in FIG. 36 is executed. That is, as shown in step S83, the logical data is divided into a fixed number of bytes, and error correction data is generated. Next, as shown in step S84, the logical data divided into a fixed number of bytes and the generated error correction data are combined to create a physical sector. Thereafter, physical data is created by combining physical sectors as shown in step S85.
[0168]
In this way, the physical data generated in the flowchart shown in FIG. 36 is subjected to a modulation process based on a certain rule to create recording data. Thereafter, the recording data is recorded on the disk 10.
[0169]
In the flowchart in which encoded main video data, audio data, and sub-video data (Comp Video, Comp Audio, Comp Sub-pict) described with reference to FIG. 33 are combined and converted into a file structure of video data. The process of creating sequence information and cell playback order in the process of creating one or more sequences will be described in more detail with reference to FIGS. FIG. 37 and FIG. 38 show the relationship between cell information (CI) related to the video cell 105 and sequence information (SI) related to the sequence 106. FIG. 37 and FIG. 38 are drawn so that both are joined at corresponding portions to form one drawing. FIG. 40 is a flowchart showing a process of creating a sequence with the sequence information and the cell playback order shown in FIGS.
[0170]
Consider the case of creating a sequence (Seq-n) in FIGS. Using a personal computer, a workstation, etc., a plurality of video cells are prepared on the hard disk or memory in which the video data is divided into units of a required size as shown in step S90 of FIG. The As shown in step S92, information such as the size (Sna), the reproduction time (Tna), the type (Cna) indicating the contents, etc., and the corresponding language code (Lna) of each prepared video cell is stored in the cell information (Cl ) And acquired. As shown in step S93, each cell information (CI) is collected as a table in the order of description, and a cell information table (CIT) is created. The cell numbers (#n, # n + 1, # n + 2) constituting the sequence (Seq-n) are extracted from the cell information table (CIT) created in this way, as shown in step S94, and the sequence constituting the sequence The number of constituent cells is determined. Further, the sequence reproduction time is obtained from the total time (Tna + Tnb + Tnc) of the constituent cells. As shown in step S95, the cell numbers in the cell information table (CI) description order from the reproduction order # 1 are stored in the cell reproduction order list for determining the sequence reproduction order from the number of cells constituting the sequence. A cell playback order list is created as shown in FIG. The sequence information (SI) #n is configured by collecting information such as the number of sequence constituent cells, the sequence playback time, and the cell playback order list. Next, the next sequence is created in the same manner as shown in step S96.
[0171]
When there are no more sequences to be created, as shown in step S97, all sequence information (SI) is assigned a number from # 1 in the order of description, stored in the sequence information table (SIT), and sequence creation is terminated.
[0172]
Finally, the total number of sequences, the start position of the sequence information table, the start position of each sequence information, the start position of the cell information table, and the like are stored in predetermined locations in the file management table, thereby forming a file.
[0173]
In the above-described embodiments, the high-density recording type optical disk has been described as the recording medium. However, the present invention is not limited to the optical disk, such as a magnetic disk or other physically high-density recording medium. It can also be applied to.
[0174]
【The invention's effect】
As described above in detail, according to the present invention, when a squeeze screen recorded on a recording medium is viewed on a conventional 3: 4 size television monitor, a letterbox screen or panning that does not cause distortion in the vertical and horizontal screen ratio. It has a function to convert to a scan screen and play it, and the user can freely select the desired display mode from among them, and in addition to restricting the display mode reflecting the creator's intention, It is possible to provide a playback apparatus that can perform switching and a playback method thereof.
[0175]
In addition, it is possible to provide a playback apparatus and a playback method that can automatically perform playback in the optimum display mode according to the shape of the connected display apparatus without having to switch display modes.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a schematic configuration of an optical disk reproducing apparatus for explaining an embodiment of the present invention.
FIG. 2 is a diagram for explaining the configuration of a disk drive unit.
FIG. 3 is a perspective view for explaining the configuration of an optical disc.
FIG. 4 is a diagram for explaining a configuration of a key operation unit and a display unit.
FIG. 5 is a plan view for explaining a configuration of a remote control.
FIG. 6 is a diagram for explaining a volume structure of an optical disc.
FIG. 7 is a diagram for explaining the configuration of a disk information file.
FIG. 8 is a diagram for explaining the configuration of a video file.
FIG. 9 is a diagram for explaining a hierarchical structure of image data stored in a file.
10 is an explanatory diagram showing 1 GOP configuring the video cell shown in FIG. 9; FIG.
FIG. 11 is a diagram for explaining the contents of cell information stored in a cell information table;
FIG. 12 is a diagram for explaining the contents of one sequence information stored in a sequence information table.
FIG. 13 is a diagram for explaining parameters recorded in a file management table;
FIG. 14 is a diagram for explaining video data attributes;
FIG. 15 is a diagram for explaining audio data attributes;
FIG. 16 is a diagram for explaining sub-video data attributes;
FIG. 17 is a block diagram showing a schematic configuration of a video decoder unit.
FIG. 18 is a block diagram showing a schematic configuration of an audio decoder unit.
FIG. 19 is a block diagram showing a schematic configuration of a sub-picture decoder unit.
FIG. 20 is a block diagram showing a schematic configuration of a video reproduction processing unit.
FIG. 21 is a block diagram showing a schematic configuration of an audio reproduction processing unit.
FIG. 22 is a block diagram showing a schematic configuration of an audio mixing unit.
FIG. 23 is a flowchart for explaining video data attribute acquisition / setting processing;
FIG. 24 is a diagram showing a display example of an image mode in which video data with an aspect ratio of 9:16 can be played back on a television with an angle of view of 3: 4.
FIG. 25 is a diagram showing a display example of an image mode in which video data having an aspect ratio of 9:16 can be reproduced on a television having an angle of view of 9:16.
FIG. 26 is a diagram for explaining a configuration of a rear panel of the optical disc playback apparatus.
FIG. 27 is a flowchart for explaining video data attribute acquisition / setting processing;
FIG. 28 is a display example of an image mode in which video data with an aspect ratio of 9:16 can be played back on a television with an angle of view of 3: 4, and video data of an aspect ratio of 9:16 is played back on a television with an angle of view of 9:16. The figure which shows the example of a display of possible image mode.
FIG. 29 is a flowchart for explaining audio data attribute acquisition / setting processing;
FIG. 30 is a flowchart for explaining sub-video data attribute acquisition / setting processing;
FIG. 31 is a block diagram showing an encoder system for generating video files by encoding video data.
32 is a flowchart showing the encoding process shown in FIG. 31. FIG.
33 is a flowchart for creating a video data file by combining main video data, audio data, and sub-video data encoded in the flow shown in FIG. 32. FIG.
FIG. 34 is a block diagram showing a disk formatter system for recording a formatted video file on an optical disk.
35 is a flowchart for creating logical data to be recorded on a disc in the disc formatter shown in FIG. 34. FIG.
FIG. 36 is a flowchart for creating physical data to be recorded on a disk from logical data.
FIG. 37 is an explanatory diagram showing a relationship between cell information and sequence information.
FIG. 38 is an explanatory diagram showing the relationship between cell information and sequence information in the same manner.
FIG. 39 is an explanatory diagram showing the relationship between cell information and sequence information in the same manner.
FIG. 40 is a flowchart illustrating a process of creating cell information and sequence information.
[Explanation of symbols]
4. Key operation unit and display unit
5. Remote control
5n ... Shape key
6 ... Monitor section
8 ... Speaker part
10 ... Optical disc
30 ... disk drive
50 ... System CPU section
52 ... System ROM and RAM
54. System processor section
56: Data RAM section
58 ... Video decoder section
60. Audio decoder section
62 ... Sub-picture decoder section
64 ... D / A & playback processing section
201: Video playback processing unit
202 ... Audio reproduction processing unit
203 ... Audio mixing section
207 ... Sub-picture reproduction processing unit

Claims (3)

In an optical disc having a data recording area defined by at least one title set area defined between a lead-in area and a lead-out area and divided by logical sector boundaries, the title set area includes a title -The video, audio, and sub-picture data in the video, audio, and sub-picture data that make up the set, and the playback target area in which the video, audio, and sub-picture packs are continuously recorded, and the playback of the video, audio, and sub-picture data A title set information area in which title set information to be controlled is recorded;
The title set information includes video attribute information, audio attribute information, and sub-picture attribute information for appropriately reproducing video, audio, and sub-picture data of the title set,
The video attribute information includes information indicating MPEG1 or MPEG2 as information relating to the compression mode of the video data, and further includes information relating to the frame rate and display aspect ratio of the video data and information relating to the display mode. Includes letterbox prohibition or permission information to limit the status,
The audio attribute information includes information indicating AC3, linear PCM, or MPEG1 as information related to the audio coding mode of the audio data, and the sub-picture attribute information relates to a sub-picture coding mode of the sub-picture data. In a playback apparatus for playing back data from an optical disc including information indicating run length as information,
Obtaining means for obtaining the video, audio and sub-picture attribute information from the title set information of the title set;
An audio and sub-picture decoder for decoding the audio and sub-picture pack;
A video decoder for decoding the video pack;
The decoded video data is processed in accordance with the frame rate and display aspect ratio obtained from the attribute information, and the display state is determined according to the letterbox prohibition or permission information included in the information regarding the display mode included in the attribute information. Limited video playback processing means ;
A playback apparatus comprising: In an optical disc having a data recording area defined by at least one title set area defined between a lead-in area and a lead-out area and divided by logical sector boundaries, the title set area includes a title -The video, audio, and sub-picture data in the video, audio, and sub-picture data that make up the set, and the playback target area in which the video, audio, and sub-picture packs are continuously recorded, and the playback of the video, audio, and sub-picture data A title set information area in which title set information to be controlled is recorded;
The title set information includes video attribute information, audio attribute information, and sub-picture attribute information for appropriately reproducing video, audio, and sub-picture data of the title set,
The video attribute information includes information indicating MPEG1 or MPEG2 as information relating to the compression mode of the video data, and further includes information relating to the frame rate and display aspect ratio of the video data and information relating to the display mode. Includes letterbox prohibition or permission information to limit the status,
The audio attribute information includes information indicating AC3, linear PCM, or MPEG1 as information on an audio coding mode of the audio data,
The optical disc characterized in that the sub-picture attribute information includes information indicating a run length as information relating to a sub-picture coding mode of the sub-picture data.   A recording apparatus for recording information on the optical disk according to claim 2.

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