WO1997007511A1 - Disque optique multimedia pour lequel le producteur coordonne le mode vision/ecoute, notamment une reproduction speciale a la demande, dispositif reproducteur et procede de reproduction du disque - Google Patents
Disque optique multimedia pour lequel le producteur coordonne le mode vision/ecoute, notamment une reproduction speciale a la demande, dispositif reproducteur et procede de reproduction du disque Download PDFInfo
- Publication number
- WO1997007511A1 WO1997007511A1 PCT/JP1996/002323 JP9602323W WO9707511A1 WO 1997007511 A1 WO1997007511 A1 WO 1997007511A1 JP 9602323 W JP9602323 W JP 9602323W WO 9707511 A1 WO9707511 A1 WO 9707511A1
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- H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal
Definitions
- the present invention relates to a multimedia optical disk, in which a creator can freely coordinate a viewing mode in which special reproduction is introduced, a reproducing apparatus and a reproducing method thereof.
- the present invention relates to an optical disk on which an information signal is recorded and a reproducing apparatus thereof, and more particularly to an optical disk, an optical disk reproducing apparatus, and a reproducing method on which an object including digital moving image data, audio data, and sub-picture data is recorded.
- Recording media such as optical disks are indispensable for distribution and sales of music software and video software. Users can enjoy these at home by renting these recording media at rental shops or purchasing them at record stores.
- laser disks are widely used as recording media for video software
- CDs Compact Discs
- the optical pickup skips a predetermined unit and reads recorded information on the spiral track in the forward direction. Conversely, if the operator instructs rewinding, the optical pickup skips the specified unit and The recorded information on the spiral track is read out in the direction.
- the operator does not like the output information, he can view it in a short time by instructing fast-forward playback. Alternatively, by instructing rewind reproduction, the missed information can be confirmed again.
- fast-forward playback as described above is not very desirable for some title creators. This is because even if an advertisement is inserted into the video recorded on the optical disc, it may be overlooked by fast-forward playback.
- Price competition in video software is intense. The software for promoting tourism mooks cannot be expected to sell as high as the movie hits, so the title creator who creates them can lower the sales price or provide it free of charge. I have to do it. For this reason, title creators are forced to recruit hotels, airlines, and tour companies to travel to as sponsors and insert their commercials into the video.
- an advertisement image is inserted by recruiting sponsors in this way, the operator easily overlooks the operation by quickly performing a fast-forward operation.
- the fast-forward and rewind playback of the above optical discs is no longer an exaggeration as a classic playback function.
- the first basic technology of interactive software is distributed recording. That is, instead of recording an hour-long image on a spiral track in a sequential manner, it is cut into several seconds, such as several seconds or several minutes, and these are cut on a plurality of arcs of the spiral track. Record in random order.
- the second basic technology is to play back video information that has been cut into several pieces by a plurality of control data in an arbitrary order—random playback.
- the control data for random reproduction is composed of a pair of the read order of the shredded video and the address information indicating the arc of the spiral track on which the video is recorded.
- the disc reproducing apparatus presents several branch destinations of the video reproduction to the operator by using a menu or the like.
- the operator selects any one of the branch destinations, a plurality of control operations are performed. It reads the corresponding data out of the data and entrusts the video reading to it. By repeating such operations over and over, the playback path can be switched in any number of ways according to the menu selection.
- video information of multiple hotels, video information of multiple sightseeing spots, video information of multiple meals, and video information of multiple experience sports such as surfing and diving are recorded on an optical disc.
- the user is allowed to select a budget, favorite sports, and the like, and the video information of hotels and sports is reproduced according to the selection results.
- the travel software for “Travel Mook” has a loop-shaped playback path containing many branches and a branch.
- the former presents several types of courses to the operator using a menu, and determines the branch destination according to the confirmation operation on this menu.
- the latter is the playback path of the Digest version created by extracting the flashy and interesting parts.
- the operator should skip playback of the video on the digest video path that does not include branches, and should not perform skip playback on the playback path that includes many branches.
- the skip playback is interrupted each time a menu is hit, and the operator performs inefficient playback, such as rewinding the video to make accurate selections.
- a first object of the present invention is to provide an optical disc and a reproducing apparatus for the optical disc that enable an operator to reliably view video contents considered important by a title creator, such as advertisements, rules, and contracts.
- a second object of the present invention is to provide an optical disc and an apparatus for reproducing the same, which can skillfully incorporate the effectiveness of trick play while eliminating the execution of trick play that impairs the usefulness of interactive software. It is to be. Disclosure of the invention
- a first object of the present invention is a multimedia optical disc having a data area, wherein the data area includes an object recording area, and the object recording area is divided into a plurality of sub-areas, and each sub-area is Indicates that a plurality of blocks are recorded, each block includes moving image data and management information, and the management information in each block is valid in the reproducing apparatus only during a time period during which moving image data belonging to the same block is reproduced.
- the management information in the block is achieved by configuring to have user operation restriction information indicating whether to restrict the user operation in the valid time period.
- There is management information in the object that is valid only during the period during which the video data in the block is played.
- the user operation restriction information in this management information specifies whether or not the user operation restriction information for performing trick play such as fast forward and rewind is permitted. , The fast-forward operation is prohibited while they do not exist, and the fast-forward operation is prohibited while they do not exist. it can.
- the sub-region can be configured to extend over a continuous section.
- the plurality of sub-areas can be configured so that the reproduction order of the moving image data is arranged in the order of earliest along the rotation direction of the multimedia optical disc.
- management information and the moving image data in the sub area can be configured such that each is recorded in one sector.
- the user operation restriction information configured as described above indicates whether or not to mask a key interrupt corresponding to the instructed trick play when a key interrupt for instructing trick play is requested. It can be configured to include a mask flag. Wear.
- a second object of the present invention is also a multimedia optical disc having a data area and an index area, wherein the data area includes an object recording area.
- One or more objects are recorded (where the object recording area is divided into a plurality of sub-areas, blocks are recorded in each sub-area, and the sub-areas extend over consecutive sectors.
- the user operation restriction information includes whether or not to restrict user operations during a period in which a series of objects specified in the address column (a series of objects is hereinafter referred to as a chain) is being reproduced. It can be configured to show
- a key for executing a special reproduction by a user operating the remote controller is determined based on the user operation restriction information corresponding to the address string. If the user operation restriction information that sets the execution of special playback interrupt processing to be rejected is associated with the path information of a highly interactive playback path, such as interactively determining the branch destination, a highly interactive playback path Even if the operator presses the key inadvertently, the user operation restriction information can be used to prohibit the activation of the key interruption processing for trick play such as fast forward or rewind. In this way, by prohibiting the activation of the special reproduction key interrupt processing in the reproduction path having high interactivity including the branch, execution of the special reproduction which impairs the interactivity can be eliminated.
- the path information of the reproduction path for sequentially viewing the video content corresponds to the user operation restriction information set to permit execution of the special reproduction interrupt processing.
- This allows fast forward or rewind when the operator presses a key. , Etc., can be activated.
- Etc. can be activated.
- the reproduction path of the digest video version can be viewed using the special reproduction. Therefore, in the playback path of the digest video, the effectiveness of special playback can be skillfully incorporated.
- the management information in the part is Contains an address that indicates where the video data with the angle identifier is recorded, and the user operation restriction information is a key interrupt when a key interrupt to change the angle identifier is requested.
- a playback path that fully demonstrates the interactivity and a playback path for demonstration that executes all or part of the interactive control contents on a single optical disc can be used.
- These reproduction paths can be appropriately switched and used depending on the situation where the optical disc is reproduced.
- a predetermined block in the object recording area is any of moving image data or sub-picture data for drawing a menu including a plurality of items for visually presenting the contents of the interactive control.
- the management information in the predetermined block includes the cursor operation information for switching the item to the first display mode based on the cursor key operation by the operator, and the enter key by the operator.
- the user operation information in the second area includes determination operation information for switching an item to the second display mode based on an operation, and a command group that defines dialog control according to the item that has been subjected to the determination key operation.
- the application restriction information masks the key interruption based on the cursor operation information, the confirmation operation information, and the command group when the cursor key operation is performed and / or the key interruption indicating that the confirmation key operation is performed is performed. It can be configured to include a mask flag indicating whether or not it is.
- the information for requesting the operator to perform the call operation and the confirmation operation is provided in the management information, and on the other hand, the activation of the interrupt processing by the key interrupt from the operator is performed in the second.
- This can be prevented by the user operation restriction information in the management information.
- This realizes a control mechanism on the playback device that has two aspects, in which the restriction mechanism for force-sol operation and confirmation operation is provided on the object side, but the activation is prohibited from the playback path side. I can do it.
- the title creator determines to what level the contents of the object-side control destination are released to the operator by setting the user operation restriction information on the playback path side. Can be adjusted freely.
- one playback path can be used to demonstrate the interactivity, and one playback path can be used for demonstration to execute all or part of the interactive control.
- These optical discs can be provided in such an optical disc, and these reproduction paths can be appropriately switched and used according to the situation where the optical disc is reproduced.
- one of the blocks includes one of a plurality of audio data or a plurality of sub-video data, and each of the audio data and the sub-video data is provided with a channel identifier.
- the user operation restriction information can be configured to include a mask flag indicating whether or not to switch audio data and / or sub-picture data when a key interrupt for switching channels is generated.
- the channel switching mechanism an object
- the playback device it is possible to realize on the playback device a control mechanism that has two aspects of prohibiting activation of this from the playback path side.
- the title creator can freely determine to what level the contents of the control destination on the object side are released to the operator by setting the user operation restriction information on the playback path side. Can be adjusted.
- one playback path is used to fully demonstrate the interactivity, and one playback path is used for demonstration where all or part of the interactive control is executed.
- These optical discs can be provided in such an optical disc, and these reproduction paths can be appropriately switched and used according to the situation in which the optical disc is reproduced.
- FIG. 2 is an external view of an optical disc in the embodiment.
- FIG. 4 is a diagram showing a pit string on the information layer 109.
- FIG. 3 is an explanatory diagram of a track arrangement of an information layer of an optical disc.
- FIG. 3 is an explanatory diagram of a physical sector in an information layer of an optical disc.
- FIG. 3 is a diagram illustrating a logical structure of an optical disc.
- FIG. 3 is an explanatory diagram of a file area of an optical disc.
- FIG. 4 is an explanatory diagram of a data structure of a video title set.
- Fig. 5 is an explanatory diagram of a data structure of a video title set.
- FIG. 6 is a diagram showing a correspondence relationship between a video material, an audio material, a subtitle material, and each pack in a video object (V0B).
- FIG. 3 is a diagram illustrating an internal structure of an audio pack.
- FIG. 3 is a diagram illustrating an internal structure of a DSI.
- FIG. 3 is a diagram illustrating an internal structure of highlight information.
- FIG. 3 is a diagram illustrating an internal structure of PCI general information.
- FIG. 7 is a diagram showing the contents of VOB recorded in a video title set VI.
- Fig. 10 B
- FIG. 7 is a diagram showing the contents of VOB recorded in a video title set VI.
- Fig. 10 C
- FIG. 7 is a diagram showing the contents of VOB recorded in a video title set VI.
- FIG. 4 is a diagram showing an internal structure of video title set management information.
- FIG. 4 is a diagram showing a data structure of PGC information.
- FIG. 6 is a diagram showing the description content of each video title set management information in a video title set VI.
- FIG. 2 is a perspective view illustrating an appearance of the playback device according to the embodiment.
- FIG. 2 is a block diagram showing an internal configuration of the MD player 1 according to the embodiment.
- FIG. 2 is a block diagram showing a configuration of a system decoder 86.
- FIG. 3 is a configuration diagram showing an internal configuration of a system control unit 93.
- FIG. 3 is a diagram showing a panel configuration of a remote controller 91.
- FIG. 6 is a main flowchart showing processing contents of a system control unit 93.
- FIG. 9 is a flowchart showing the processing contents of the system control unit 93 at the time of branching.
- FIG. 9 is a flowchart showing the processing contents of the system control unit 93 at the time of branching.
- FIG. 9 is a flowchart showing processing contents of a system control unit 93 based on PGC information.
- FIG. 9 is a flowchart illustrating a procedure of a key interrupt type determination process.
- FIG. 9 is a flowchart illustrating a procedure of a key interrupt type determination process.
- FIG. 5 is a flowchart showing a procedure of an interrupt process when a pause key is pressed.
- FIG. 5 is a flowchart showing a procedure of an interrupt process when a volume menu key is pressed.
- FIG. 9 is a flowchart showing a procedure of interrupt processing when a next PG, previous PG, or first PG key is pressed.
- FIG. 31 is a diagram showing a scene of diving being displayed on the screen of a television monitor, FIG. 31
- FIG. 6 is a diagram showing an overall structure of a playback path constructed by a video title set VI.
- FIG. 3 is a diagram illustrating an internal configuration of a video manager.
- FIG. 6 is a diagram showing an entire structure of a playback path of an automatic demonstration constructed by a video title set VI.
- FIG. 14 is a diagram showing the setting contents of PGC user operation restriction information for an automatic demonstration.
- the multimedia optical disk in the present embodiment is preferably a digital video disk (hereinafter abbreviated as DVD) that realizes a recording capacity of about 4.7 Gbytes on one side on an optical disk having a diameter of 120 mm.
- DVD digital video disk
- classification number is attached to the left of each item.
- the number of digits in the classification number indicates the hierarchical depth of the item.
- the top of the classification numbers are (1) and (2), (1) relates to optical discs, and (2) relates to playback devices (disc playback devices). Physical structure of optical disk
- V0B Video Title Set-Video Object
- Video Object (V0B) Management Information Pack
- Disc playback device components (2.2.1) Components of disc playback device-internal configuration of signal separation unit 86
- FIG. 1A is a diagram showing the appearance of a DVD
- FIG. 1B is a cross-sectional view thereof
- FIG. 1C is an enlarged view of a circle of FIG. 1B.
- the DVD 107 consists of a first transparent substrate 108, an information layer 109, an adhesive layer 110, a second transparent substrate 111, and a printing layer 111 for label printing from the bottom of the drawing. Are laminated.
- the first transparent substrate 108 and the second transparent substrate 111 are reinforcing substrates of the same material, but both have a thickness of about 0.6 ⁇ . In other words, both platforms are roughly 0.5mn! It is ⁇ 0.7mm thick.
- the adhesive layer 110 is provided between the information layer 109 and the second transparent substrate 111 and adheres them.
- the information layer 109 has a reflective film such as a metal thin film adhered to a surface in contact with the first transparent substrate 108.
- a reflective film such as a metal thin film adhered to a surface in contact with the first transparent substrate 108.
- irregular pits are formed at high density by a molding technique (the pit shape is shown in Fig. 1D.
- the length of each pit in Fig. 1D is 0.4 ⁇ ! ⁇ 2. It is 13 m and is spirally arranged at 0.74 m intervals in the radial direction to form a single spiral track.
- the optical spot 114 on DVD has a large numerical aperture NA of the objective lens and the wavelength of the light beam; I is small, so it is about 1 / 1.6 in diameter compared to the optical spot on CD. .
- DVDs with such a physical structure can record about 4.7 Gbytes of information on one side.
- the recording capacity of about 4.7 Gbytes is almost eight times larger than that of conventional CDs. Therefore, in the DVD, it is possible to significantly improve the video quality, so it is possible to improve to more than 2 hours, compared to I 4 minute video CD (realizing such high capacity for regeneration time
- FIG. 2A schematically shows a spiral track formed from the inner circumference to the outer circumference of the information layer. Data reading from the spiral track is performed in units called sectors. As shown in Fig. 2B, the internal structure of the sector consists of a sector header area, a user data area, and an error correction code storage area.
- the sector address of the sector header area is used to identify each sector.
- the disc reproducing apparatus uses the sector address as a clue to find out which of the many sectors should be read.
- the user data area stores 2KByte data.
- the error correction code storage area stores an error correction code for the user data area of the same sector.
- the disk playback device performs error detection using the error correction code when reading the user data area of the same sector, and even performs error correction, thereby guaranteeing the reliability of data reading.
- FIG. 3A is a diagram showing the logical structure of a disk.
- the physical The sectors are arranged in ascending order according to the sector address.
- the identification information included in the sector address indicates that the read-in area is from the top, the volume area follows the read-in area, and the volume area follows the volume area. It is roughly classified into a door area.
- the “lead-in area” data for stabilizing the operation of the MD player at the start of reading is recorded.
- the “lead-out area” is an area for notifying the playback device of the end of playback, and has no meaningful data recorded therein.
- the “volume area” is an area in which digital data constituting the application is stored, and manages the physical sector to which it belongs as a logical block.
- a logical block is identified by a unit in which consecutive numbers are assigned to consecutive physical sections, with the first physical sector in the data recording area as number 0.
- the circle b301 in FIG. 3A shows a group of logical blocks in the volume area. Numerical values such as #m, U, # ⁇ + 2, # ⁇ + 3,... Attached to many logical blocks in a circle are logical block numbers.
- the volume area is further divided into a volume management area and a file area.
- file system management information for managing a plurality of logical blocks as a file is stored according to IS013346.
- the file system management information is information that clearly shows the correspondence between the file names of a plurality of files and the addresses of the logical blocks occupied by each file. Realize disk access for each file by using system management information. That is, given a file name, all logical blocks occupied by the file are calculated by referring to all system management information, and these logical blocks are accessed to obtain only desired digital data. Take it out.
- Figure 3 is an illustration of the file area.
- the file area contains a video manager (Video Manager) and a plurality of video title sets (Video Title Set). These are composed of a plurality of continuous files, and the recording location is calculated based on the above file system management information.
- the reason for such a continuous file is that the data size of video data is enormous, and if it is made into one file, the file size will exceed 1 GB.
- a video title set groups and stores one or more DVD applications, called titles.
- a plurality of titles grouped in a movie application corresponds to the case where there is a theatrical release version of the same movie. This is because titles such as theatrical version and no-cut version share a large amount of video data, so grouping and managing can make efficient use of video.
- video title set ⁇ is recorded.
- the video title set ⁇ is an interactive software “Travel Mook” (this interactive software is realized by the characteristic data structure of the optical disk in the present embodiment.
- Interactive software Travel Mook is a movie book.
- a movie book is an electronic publication that includes a number of high-quality live-action videos that are several seconds or several minutes long, and provides a logical structure that simulates a book such as a catalog * chapter in the playback path.
- Travel Mook is a set of three titles, each of which is referred to as the individual titles of the Hawaii Island Course, the Saipan Island Course, and the Guam Island Course.
- the video manager stores information on a menu for the user to select a title to be played from all titles stored in a plurality of video title sets.
- FIG. 4 is an explanatory diagram of the data structure of a video title set.
- the video title set stores a plurality of objects called video objects (V0B: Video Object) and video title set management information for managing the reproduction order of the plurality of video objects.
- V0B Video Object
- Video title set-Video object X (VOB)
- Video object (VOB) is an object that includes digital video and digital audio. Since this example is the interactive software “Travel Mook”, the individual V0B # 1, 2, 3, 4,... Shown in FIG. This scene is equivalent to a scene where the sea that has been captured is photographed, a scene where a lively city is photographed, or a scene where young people enjoy surfing along the beach.
- the data structure of “Video Object (VOB)” has a configuration in which a plurality of VOB Units (VO BU) are arranged in chronological order from the beginning.
- the V0 Bunit (VOBU) is playback data of about 0.5 seconds to about 1.0 seconds.
- the c- pack data consisting of multiple types of pack data, such as audio packs A to C and sub-picture packs A and B, each have a data size of 2 KBytes.
- digital data strings constituting moving picture data, audio data, sub-picture data, and control data are obtained.
- the digital data sequence re-integrated for each type is called an elementary stream, and the VOB is called a program stream or a system stream consisting of a plurality of elementary streams. There is also.
- the pack data of all VOB units are arranged with regularity, except that the management information pack is arranged at the top.
- the total number of packs belonging to the VOB unit and the number of packs for each type do not need to be the same, since moving images, audio, and sub-pictures include variable-length compressed data.
- the transfer rate to the playback device assigned to the video is about 4.5 Mbit, and it is not a normal still video. This would include hundreds of video packs.
- the video pack stored in the video object forms at least one digital video data called GOP (Crop Of Pictre) by the digital data of the video pack belonging to one VOB unit.
- GOP Cut Of Pictre
- the GOP is one unit when decompressing compressed digital video data, and is image data for about 12 to 15 frames.
- MP EG 2 Moving Pictre Expert Grop ⁇ IS 01 1 1 72, IS 01 38 18
- the details are stipulated.
- each pack in the video object (VOB) and the scene of the video is shown in FIG.
- a moving image material of one scene is shown by a horizontally long rectangle, and is arranged above the VOB.
- three channels of audio material are shown as three horizontal rectangles and are arranged below the VOB.
- the two-channel sub-picture material is shown as two horizontal rectangles, and is arranged below the audio material.
- the downward arrow extending from the video material indicates how the video material of the video is recorded in the data field of each pack.
- the video up to 0.5 seconds from the beginning of the scene is encoded into MPEG-compliant pictures (Intra-Pictre), P-pictures (Predictive-Pictre), and B-pictures (Bidirectionally predictive Pictre) It is c (Note that it is found to be recorded in the data field of the video packs 1 and 2 of the V 0 B Interview Stevenage preparative 1 to after, but has been described above, is actually stored in several hundred packs, description For the sake of convenience, the following description will be continued assuming that they are stored in two packs.)
- the video from 0.5 seconds to 1.0 second is also encoded into I-picture, P-picture, and ⁇ picture, and then recorded in the data fields of video packs 3 and 4 in the next VOB unit.
- the moving image for 1.0 to 1.5 seconds is also encoded and recorded in the data field of the video pack in the next VOB unit.
- I-pictures, B-pictures, and P-pictures show live-action footage of beach scenes filled with foreign tourists and coral reefs where colorful and colorful tropical fish swim. It is encoded into a picture and is distributed and recorded in the data fields of multiple video packs in each VOB unit. Due to such distributed recording, “Travel Mook” incorporates the scene of the beach and the scene of the coral reef into one scene.c The data distributed and recorded in the data field of the video pack in V0B This is called video data.
- VOB Video Object
- FIG. 6A shows the data structure of a video pack.
- Movie pack in this figure
- the data structure shown in the figure is video pack, which consists of “pack header”, “packet header”, and “data field” specified by MPEG, and has a length of 2 Kbytes per pack.
- the “pack header” describes MPEG-compliant data such as a pack start code and an SCR (System Clock Reference).
- the “packet header” describes a stream ID, packet length, and STD (system clock).
- Target Decoder Describes MPEG-compliant data such as buffer scale size, PTS (Presentation Time Stamp), and DTS (Decoding Time Stamp).
- the stream ID in the “packet header” is set to “1110 0000” as shown in the figure by pulling out below the packet header. This indicates that the elementary stream formed by this pack is a video stream.
- the SCR and PTS of the video pack are used for synchronizing with the decoding of the audio pack and the decoding of the sub-picture pack.
- the video decoder on the disc playback device adjusts the time of the reference clock based on the SCR, decodes the video data in the data field, and waits for the reference clock to time the time described in the PTS. c When the time is counted, the decoding result is output to the display side. By waiting for the output based on the contents described in the PTS, the video decoder eliminates a synchronization error with the sub-video output and the audio output.
- VOB Video object
- FIG. 6B shows the data structure of audio packs AC.
- the data structure of the audio pack is basically the same as the data structure of the video pack, and includes “pack header”, “packet header”, and “data”. Ludo ".
- the difference is that the stream ID of the “packet header” is set to “1011 1101” and that the substream ID is provided in the first 8 bits of the data field. (See the shaded area in the figure).
- the stream ID is “1011 1101”, indicating that the elementary stream formed by this pack is a private stream 1.
- a private stream is a stream used in addition to a video stream and an MPEG audio stream.
- the “pack header” of the audio pack describes MPEG-compliant data such as key, kickstart code, and SCR.
- the “bucket header” includes the stream ID, bucket length, and STD buffer scale size. MPEG-compliant data such as PTS, PTS, and DTS are described.
- the SCR and PTS of the audio pack are used for synchronization adjustment with the decoding of the video pack and the decoding of the sub-picture pack.
- the audio decoder on the disc playback device adjusts the time of the reference clock based on the SCR, decodes the audio data in the data field, and counts the time when the reference clock is described in the PTS. Wait for Since the decoding of audio data is lighter than that of video data and sub-picture data, the output waiting time of audio data is much longer than that of video data and sub-picture data. When the time is counted, the decoding result is output to the speaker. By waiting for output based on the contents described in the PTS, the audio decoder eliminates synchronization errors with the video output and sub-video output.
- Each of the audio packs A to differs in the setting of the sub stream ID in the data field.
- the audio packs ⁇ and ⁇ are the top 5 sub stream IDs.
- the bit length is set to “10100” and the upper 5 bits of the substream ID for audio pack C are set to “1000 0.”
- the audio packs ⁇ and ⁇ are linear PCM.
- the major difference between the linear PCM system and the Dolby AC-3 system is that the linear PCM system has an LR component.
- the Dolby AC-3 system has an LR component and a surround component.
- the lower 3 bits of the substream ID are provided to assign a channel number to each of the linear PCM system and DolbyAC-3 system.
- a channel number to each of the linear PCM system and DolbyAC-3 system.
- two channels are used in the linear PCM system and one channel is used in the Dolby AC-3 system, three audio elementary streams are identified.
- a video object can have a maximum of eight audio substreams, and the substream ID has identification codes of 0 to 7 as identification codes for each audio substream. To be granted And.
- two channels are used in the linear PCM system and one channel is used in the Dolby AC-3 system.
- the arrow extending from the audio material in Fig. 5 to the V0B audio pack is a three-channel audio data encoded in the above two methods and recorded in the data field of each audio pack in 0.5 second units It is shown that it is done. That is, the dubbed voice of A channel from the beginning of the above scene to 0.5 sec. Is recorded in the data field of audio pack A-1 in VO B unit 1, and the dubbed voice from 0.5 sec. To 1.0 sec. Recorded in the data field of audio pack A-2 in Bunit 2.
- the sound from 1.0 to 1.5 seconds from the beginning is recorded in the data field of audio pack A-3 in the next VOB unit.
- the audio data that completely matches the video data contained in the VOB unit is included in the same VOB unit. There is no need, and it is actually stored in the previous VO Bunit.
- the dubbed sound of the B channel from the beginning of a scene to 0.5 seconds is recorded in the data field of the audio pack B-1, and the dubbed sound from 0.5 seconds to 1.0 second is recorded in the audio pack B-2. Is recorded in the data field.
- the audio from the first 1.0 second to 1.5 seconds is recorded in the data field of audio pack B-3.
- the dubbed sound of the C channel from the beginning of one scene to 0.5 seconds is recorded in the data field of Audio Pack C-1, and the dubbed sound from 0.5 seconds to 1.0 second is recorded in the data field of Audio Pack C-2. .
- the audio from 1.0 to 1.5 seconds is recorded in the data field of Audio Pack C-3.
- audio data A can be set to have a dubbed voice in English
- the audio data B can be set to have a dubbed voice in French
- the audio data C can be set to have a dubbed voice in Japanese. Wear.
- Video object (VOB) Sub-picture pack
- FIG. 6C shows the data structure of the sub-picture pack.
- the data structure of the sub-picture pack is basically the same as the data structure of the audio pack. That is, it consists of a “pack header”, a “packet header”, and a “data field”, and a substream ID is provided in the first 8 bits of the data field.
- Pack header is the same as the audio pack. MPEG-compliant data such as stream start code and SCR are described, and the “bucket header” describes MPEG-compliant data such as stream ID, bucket length, STD buffer scale size, PTS, and DTS. ing.
- the SCR and PTS of the sub-picture pack are used for synchronization with the decoding of the video pack and the decoding of the audio pack.
- the sub-video decoder on the disc playback device side adjusts the time of the reference clock based on the SCR, decodes the sub-video data in the data field, and counts the time when the reference clock is described in the PTS.
- C Waiting for such time is performed by run-length decoding, decoding of video data that involves motion compensation prediction in addition to intra-frame decoding and intra-field decoding, and decoding of audio data. This is because the loads are greatly different.
- the decoding of the moving image data is indispensable in each G0P, the decoding of the subtitle may be performed every few seconds.
- the sub-picture decoder When the time of the SCR is counted, the sub-picture decoder outputs the decoding result to the display side. By waiting for the output based on the contents described in the PTS, the sub-picture data decoder eliminates a synchronization error between the video output and the audio data output.
- the stream ID of the “bucket header” of the sub-picture pack is set to “1011 1101” indicating the private stream, as in the audio pack, but the setting of the sub-stream ID in the data field is different.
- the upper three bits of the sub stream ID are set to “001” (the hatching in the figure). Section).
- the lower 5 bits of the sub-stream ID are provided to give a channel number to the sub-picture pack.
- two sub-picture element streams are identified.
- a video object can have a maximum of 32 sub-video sub-streams, and the sub-stream ID is an identification code of 0 to 31 as an identification code for each sub-video sub-stream. A code will be awarded.
- the image data compressed by the run-length code and the display control information for drawing the image data are recorded.
- the sub-picture is drawn on the screen by the image data recorded here. Also, the drawn sub-pictures can be scrolled up / down, scrolled, and converted in contrast by the display control information, and drawn with the same VOB unit and video packs of subsequent VOB units. Is superimposed on the movie.
- sub-picture packs ⁇ and ⁇ exist in the VOB unit, so the subtitles of two channels are distributed to the data fields of sub-picture packs ⁇ and ⁇ ⁇ ⁇ ⁇ in each V0 unit. Can be recorded. For example, displaying subtitles in English with sub-picture data ⁇ and displaying subtitles in French with sub-picture data B allows the operator to switch between them.
- Fig. 7 shows an example of a menu in “Travel Mook”.
- the “recommended course” and “tour content diagnosis course” in FIG. 7 are menu items that can be selected by the user and are called items. Details when the sub-picture is used as a menu item will be described later.
- VOB Video Object
- FIG. 6D shows the data structure of the management information pack.
- Video pack, audio pack, sub-picture pack While the management pack is composed of one packet, the management pack is composed of two packets. One of the two packets is called a PCI packet (Presentation Control Information Packet), and one is called a DSI bucket (Data Search Information).
- the data structure is slightly different from the data structure of video packs and audio packs, and includes “pack header”, “system header”, “packet header of PCI packet”, “data field of PCI bucket”, and “packet of DSI packet”. Header and a DSI bucket data field.
- the “system header” stores the management information of the entire V0B unit having this management information pack at the top according to MPEG. Stores the transfer rate required for the entire video, the transfer rate required for each video stream, audio stream, and sub-video stream divided by the buffer size.
- the stream IDs of the two “bucket headers” of the management information pack are set to “1011 1111”, which indicates the private stream 2, as indicated by the shaded area in the figure.
- Fig. 8 shows the internal structure of the DSI.
- the DSI includes DSI general information, double-speed search information, and angle information.
- DSI general information indicates the logical block number of the management information pack, and is the management information. Contains the address of the I-picture of the video pack in the same G0P as the video pack. In the example of FIG. 8, the DSI general information indicates the addresses of three I-pictures included in the G0P unit.
- the double-speed search information is a table that stores skip destination addresses for each skip amount when performing skip reproduction.
- the direction from the inner circumference to the outer circumference on the spiral track is the forward direction
- the direction from the outer circumference to the inner circumference on the spiral track is the reverse direction.
- the table stores the address of the management information pack of the nearest V0B unit every 0.5 seconds in the forward and backward directions based on the address of the current management information pack. For example, in the case of FWD 60, the address of the management information pack of the VOB unit to be reproduced 30 (0.5 x 60) seconds after normal reproduction is stored. Similarly, Fig.
- the actual skip playback speed is determined by which value in the above-mentioned table is used by the skip playback instruction key of the disc playback device. Also, if the remote control of the disc playback device has a jog dial or the like that variably sets the skip playback speed according to the rotation angle, it is possible to perform skip playback at a variable speed using all values in the table. Become.
- the angle information is a table listing a plurality of recording locations of angle cells within a multi-angle period.
- the multi-angle period refers to the camera angle from the front, the camera angle from the side, the camera angle from the sky, the camera angle from the diagonal above, etc.
- the angle cell refers to a video taken at a camera angle from the front, a video taken at a camera angle from the side, a video taken at a camera angle from the sky, or a video taken at a diagonal top camera angle.
- Refers to a section of V0B that includes the video Angle cells are numbered 1, 2, 3, ⁇ ⁇ ⁇ ⁇ .
- the disc reproducing apparatus When the operator designates these numbers with numerical keys on a remote controller or the like, the disc reproducing apparatus reads the management information pack address of the angle cell corresponding to these numbers from the angle information, and moves the optical pickup to the address. Let it. The operator causes the disc reproducing apparatus to cyclically change the read-out angle cell by pressing a key (angle switching key) for instructing the counting of the angle cell number. This makes it possible to switch the scene from the front, right side, or obliquely above for playback.
- the PCI bucket is composed of highlight information for prompting the operator for interactive input from the optical disk (see FIG. 9B), and a PCI user operator that specifies whether or not a one-sided trick play execution request can be made by the operator.
- This PCI user operation restriction information is an information element of “PCI general information” shown in FIG. 9A.
- PCI general information is the playback of the VOB unit to which it belongs.
- the relationship with the present invention is sparse, so that the description is omitted.
- the management information pack Since the management information pack is located at the top of the VOB unit, the video pack, audio pack and sub-picture pack of the same V0B unit are read out, and only 0.5 until the next management information pack is read out to the buffer.
- the c highlight information and PCI Yuzaopere one sucrose emissions restriction information included in the management information pack is developed into the buffer in the disc reproduction apparatus the data structure as the first 9 a view, second 9 C Figure
- the highlight information and the PCI user operation restriction information will be overwritten by the highlight information and the PCI user operation restriction information contained in the next V0B unit. Only while the video pack, audio pack, and sub-video pack of the V0B unit are sequentially read from the optical disc, the PCI user operation restriction information in the V0B unit is expanded in the buffer. If a key interrupt requesting execution of trick play occurs during this period, whether or not to start the interrupt process in the disc player is determined by the contents of the PCI user operation restriction information.
- the same V0B unit as certain PCI user operation restriction information contains a video pack, audio pack, and sub-picture pack corresponding to the advertising rules, and the PCI user operation restriction information activates the fast-forward interrupt processing.
- the PCI user operation restriction information can define whether or not to activate the interrupt processing according to the video content of the video pack belonging to the same V0B unit.
- the data structure of the PGC user operation restriction information is represented as shown by the broken line in FIG. 9A.
- the vertical arrangement in Fig. 9A is PCI general information.
- PrevPG Start of interrupt processing for multiple types of special playback such as Search O and TopPG SearchO. Indicates that the availability of each is specified individually.
- Backward-Scan () performs an interrupt process corresponding to the operation if a rewind playback operation is performed after the management information pack containing the PCI general information is read.
- the permission or refusal to execute or reject is expressed by lbit information.
- Forward_Scan executes the fast forward playback operation after the point at which the management information pack containing the PCI General Information is read, and executes the interrupt processing corresponding to the operation.
- the permission or refusal of refusal is expressed by ibit information.
- Pause-1 0n () is an interrupt processing corresponding to the operation when the reproduction pause operation is performed after the management information pack including the PCI general information is read.
- the lbit information expresses the permission or rejection of whether to execute or reject.
- Angle General-AngleO Change-ChangeO executes the interrupt processing corresponding to the operation when the angle cell switching operation is performed after the management information pack containing the PCI general information is read out.
- the permission or rejection rule for refusal is expressed by lbit information.
- SubPicture—Stream—Change () is used for sub-picture data switching operation after the management information pack containing the PCI general information is read out.
- the permission / refusal rule for executing or rejecting the corresponding interrupt processing is expressed by lbit information.
- Audio_Str eani_Change contains the PCI general information. If a voice switching operation is performed after the management information pack containing the PCI general information is read out, the assignment corresponding to the operation is performed.
- the permission / refusal rule for executing or rejecting the embedded data is expressed by lbit information.
- PC I General Information.
- Menu_Call (Volume) to PC I General Information.
- PrevPG_Sea rch () and TopPG_Search () will be explained later. This is because they allow or deny unexplained functions.
- “Highlight information” is for the menu drawn by the sub-picture pack. It is control information for accepting an operation, and has a data structure shown in FIG. 9B. As shown by reference numeral h2, the highlight information further includes highlight general information, item color information, item information # 1, # 2, # 3, # 4, # 5 * "Consists of # 36. Item information # 1, # 2, # 3, # 4, # 5 Given for each item displayed at the timing, for example, in the example of Fig. 7, the two menu items of “Recommended course” and “Tour content diagnosis course” are items. In this case, items from item information # 1 to item information # 36 will be entered.Note that this area is of fixed length, and no valid information is stored in the item information for unused items. Up to 36 pieces of information can be set. A maximum of 36 menu items can be displayed on one screen.c The details of the configuration information of the highlight information will be described below. Before that, for convenience of explanation, it is adopted in this playback device. The outline of the menu that is being provided will be described.
- menu items have a standard state, a selected state, and a confirmed state, which are switched by a user's selection of a menu item or a confirming operation.
- Supplementing Fig. 7 as an example, when this menu is displayed, the default operation is that the disc player displays item # 1 in the selected state and the rest in the normal state. If the standard state of all items is white, the selected state is blue, and the confirmed state is red, only the menu item corresponding to item #] will be displayed in blue. This allows the user to see which menu item is currently selected (this menu item is also referred to as the menu item pointed to by force-sol), and is currently running.
- the disc playback device manages the item numbers to be changed when the up, down, left, and right keys are pressed for each item.
- the item # 1 is returned to the normal state color, that is, white, and Change the destination item to the selected blue color.
- the user can confirm the selected item by pressing the confirmation key of the remote control. Items that have transitioned from the selected state to the confirmed state change from blue to red, are confirmed, and execute the command specified in the confirmed state.
- Fig. 7 shows an example. Then, the reproduction control is performed according to the menu items.
- Item color information is information indicating a select color-determined color for an item as shown by reference numeral b6 in FIG. 9B.
- the select color is the color given to the item selected by the user
- the confirmed color is the color given to the item that has been confirmed by the user.
- the specification of each color consists of the color specification and the mixing ratio to the background color. (1. 1. 1. 4. 2. 2. 2) Highlight information-item information
- the “color pattern number” designates one of the selected and fixed color patterns included in the “item color information”. “Start coordinate XI”, “Start coordinate ⁇ 1”, “End coordinate X2J”, “End coordinate ⁇ 2” indicates the range and color indicated by “Color pattern number” when the user selects or confirms the item. Indicates whether to convert to a ratio.
- Peripheral position information is "Move destination item number when upper key is pressed” "Move destination item number when lower key is pressed” "Destination item number when right key is pressed” "Left key is pressed Destination item number ”, indicating the destination device when the player presses the up / down / left / right keys on the remote controller.
- the "highlight command field" indicated by reference numeral y303 is a command field associated with each item information, and the command described in this field is executed by the disc reproducing apparatus only after the item is confirmed. Is done.
- the confirmation operation in the disc reproducing apparatus is, for example, pressing an “Enter” key by specifying an item with a force-sol, pressing a numerical key corresponding to the item, or the like.
- the commands described in the highlight command field include a branch command for branching to another playback path in response to an item confirmation operation, and an addition / subtraction command for adding or subtracting a score in response to an item confirmation operation.
- a description example of the branch command for the highlight command field in the item information is shown below.
- numbers such as PGC2 and 3 indicate the PGC number added to the PGC information in the video title set management information.
- the information mainly defines the playback path, and exists in the video title set management information, for example, when the operator plays V0B # 9 and the menu shown in FIG.
- the branch command “Link PGC2J” described in the highlight command field of item information # 1 is read and executed, whereby the optical disc reproduction path is changed to the PGC information # 2. Branch.
- the highlight general information is the same as the vertical line indicated by reference numeral h4 in Fig. 9C, "Fractured with change from previous VOB unit”, "Highlight information valid section start position”, and "Highlight information”. Information valid section end position ”.
- the “change flag from previous VOB unit” has a 1-bit length field. If “00” is described in this field, the highlight information that includes the "changed flag from the previous VOB unit” does not include valid item color information or item information. If “01” is described in this field, it indicates that the highlight information including this “changed flag from previous VOB unit” is valid from this knock.
- the valid highlight information is written to a highlight information buffer (a buffer for storing the highlight information, which will be described later) in the disc reproducing apparatus. If “10” is described, it indicates that the highlight information of the previous VOB unit is still valid in this VOB unit. In this case, the highlight information buffer is not overwritten. If “11” is described, the highlight code in the highlight information from the previous VOB unit is displayed. Indicates that only the command has been changed. In this case, the disc player is instructed to write only the highlight command to the buffer.
- the “changed flag from previous VOB unit” enables the disc playback device to check whether or not the setting information of the menu item has been changed.-Highlighting in units of VOB unit In addition to being able to update information, it is possible to detect when changes are not required, and to avoid complicated update processing from occurring for each VOB unit.
- Highlight information valid section start position and “highlight information valid section end position” indicate the valid section of the highlight information.
- each V0B and each pack shown in FIG. 4 is as described above. Then the c fourth video tie Toruse' bets data are described in V0B ⁇ shown in figure contrasted described with reference to 1 0 A view, second 1 0 C view about how, respectively to or different 1 In V0B # 1 in Fig. 0A, the period of several minutes including GOP00 to GOP200 is a live-action video introducing advertisements for tour companies and airlines, as shown with arrows.
- GOP250 to GOP450 A few minutes long including GOP250 to GOP450 is a live-action video that introduces famous beaches as shown by arrows.
- a few minutes length of the period, including GOP00 ⁇ GOP200 is, Remind as drawn out by an arrow
- a few minutes, including the c GOP250 ⁇ GOP450 is a live-action video to introduce the equipment guide of luxury hotels
- a local The long period is a live-action video that introduces the lodging rate, as shown by pulling out with an arrow.
- V0B # 3 the period of several minutes including GOP100 to GOP200 is a live-action video that introduces Economy Hotel as shown by the arrow.
- a period of several minutes including GOP100 to GOP200 includes a video pack, sub-picture pack, and management information pack for drawing the first menu.
- the video pack stores the background image of the menu
- the sub-picture pack stores graphics for changing the menu item to the selected color and the confirmed color
- the management information pack is executed when the menu item is confirmed.
- Information for user interaction assigned to this menu item Information is called an item.
- This menu includes items for which the hotel grade presents two courses, Deluxe Course and Economy Course, which are item information # 1, item information # 2, and item information # 2 in the PCI, respectively.
- the item information includes a command for switching the reproduction path called LinkPGC5, and the item information includes a command for switching the reproduction path called LinkPGC6.
- a period of several minutes including GOP100 to GOP200 includes a sub-picture pack depicting the second menu.
- the menu includes items for selecting courses such as “diving course” and “city sightseeing course”, and those two items are associated with item information # 1 and item information # 2 of PCI.
- Item information # 1 includes a command for switching the playback path to PGC 7
- item information # 2 includes a command for switching the playback path to PGC 8.
- V0B # 6 including the GOP100 to GOP200, is a few minutes long live-action video that introduces coral reefs and tropical fish as shown by the arrows.
- c GOP300 to GOP400 which are several minutes long live-action video introducing diving spots.
- the length of minutes including the minutes is a live-action video of several minutes long, which introduces various diving precautions and emergency measures as shown by the arrows.
- the period of several minutes including GOP100 to GOP200 of V0B # 9 includes a sub-picture pack for drawing the third menu.
- the menu includes two items that draw the character strings “Recommended tour” and “Tour content selection”.
- the PCI of the management information pack allocated to the section contains item information # 1 and item Information # 2 is included.
- Item information # 1 branches the playback path to PGC information 2
- Item information # 2 branches the playback path to PGC information 3 [LinkPGC # 3J is included.
- G0P 00 to G0P 200 of V0B # 1 corresponding to the advertising part PCI general information of PCI user operation restriction information.
- Forward-ScanO is set to non-permission. And This is to prevent the operator from overlooking the inserted advertisement by performing the fast-forward operation.
- the video title set management information stores information for managing a plurality of playback orders of the video object group described above. In other words, if it is a video title set that stores “Travel Mook” in this example, the video title set management information will be different if the courses of Hawaii Islands, Saipan Island and Guam Island are selected.
- c first 1 drawing program chain (PGC) is to be more stored that define whether to deploy the scene is a diagram showing the internal structure of the video tie Toruse' preparative management information. As shown by reference numeral a5 in FIG. 11, the video title set management information includes a video title set management table, a video title set section title search bottle table, and a PGC management information table. .
- the “video title set management table” is header information of the video title set management information, and stores pointers to storage positions of the video title set section title search pointer table and the PGC management information table. I have.
- Video title set title search search table is an index of a group of multiple program chains stored in the PGC management information table, and is the PGC information to be executed first when a title is selected. Is specified by a pointer to the storage location of the program chain.
- the courses of “Hawaii”, Saipan and Guam in “Travel Mook” are stored in association with PGC information as an entry.
- the “PGC management information table” contains a plurality of PGC information # 1, # 2, # 3, and # 3 for all video objects stored in the video title set, as indicated by reference numeral a6.
- Each piece of PGC information describes the order in which one or more video objects are played back.
- C Two or more pieces of PGC information may specify that the same video object be played back. For example, taking the video title set in FIG. 4 as an example, if the playback order of video objects is described in the PGC information in the order of V0B # 1, V0B # 2, V0B # 3, and V0B # 4, the video object is described. Are played in the order of V0B # 1, V0B # 2, V0B # 3, V0B # 4. If the playback order of video objects is described in the order of V0B # 3, VOB # 2, V0B # 1, and V0B # 4 in another PGC information, the video objects are V0B # 3, V0B # 2, V0B. # 1 and V0B # 4 are played in this order.
- the PGC information is information for defining a playback path, and mainly defines which VOBs in the same video title set are to be read and in what order. Which playback path will be connected to itself ?, "How to group the V0Bs played by itself” "Special from the operator when V0Bs are played back in their own playback order When execution of playback is required, whether or not to execute interrupt processing as it is "is attached to the own playback path.
- the PGC information includes “PGC connection information” and “PGC general information” as indicated by reference numeral a7 in FIG. , "PG map”, "V0B position information table”, and "PGC command table”.
- the “V0B position information table” instructs the disc reproducing apparatus which V0B should be read and in which order in the PGC information.
- each V0B in the order is light
- the disc player is instructed where the data is recorded on the disc, and the disc player is made to scan this area with an optical pickup.
- the reading order of V0B and the scanning range of the optical pickup for reading each V0B are represented by a list of V0B position information.
- the notation of the V0B position information is indicated by reference numeral a9.
- the V0B position information is represented by a V0B playback time, an offset to V0B, and the number of V0B blocks.
- the disk playback device calculates the logical block number of the logical block in which V0B is recorded by using the number of offsets and the like included in the V0B position information as a clue, and designates the number by the ⁇ number of blocks. '' The logical block on the track is scanned forward or backward by a certain number.
- the “PGC link information” is information indicating “which playback path is linked after itself”, and stores link destination information indicating which PGC information is read out to the buffer after its own PGC information. ing.
- the disc playback device determines the next PGC information according to the “PGC link information” and overwrites the PGC information by reading the determined PGC information from the optical disk to the buffer.
- the PGC information on the Huffa is updated, and the reproduction control is continued based on the reproduction path indicated by the updated PGC information!
- the "PG map” is information indicating "how to group VOBs reproduced by itself", and is a table-like form in which a plurality of PG numbers indicated by reference numeral a10 are associated with entry V0B. Has a data structure.
- the PG (ProGram) is a group of a plurality of V0Bs to which the reproduction order is given by the PGC information, and the entry one V0B is the V0B located at the head of each PG. .
- PGC information # 1 0 gives the playback order to nine VOBs such as V0B # 1, 2, 3, 4, 5, ... 9, where V0B # 1 is the entry of PG1 entry V0B V0B # 3 is set to PG2 entry V0B, and V0B # 6 is set to PG3 entry V0B c Then, V0B # 1 to V0B # 2 are grouped to PG1 V0B # 3 to V0B # 5 are grouped into PG2, and V0B # 6 to V0B # 9 are grouped into PG3.
- the PG map is provided for browsing by the disc reproducing device when an instruction to change the reading position is given by the operator.
- the “read position change instruction” refers to “move to next PG”, “move to previous PG”, “move to first PG”.
- the indication is provided by the operator.
- the disk reproducing apparatus starts reading V0B # 1 which is the entry V0B of PG1. If the operator instructs “move to the next PG” while the disk playback device is reading V0B # 4, the PG name to which V0B # 4 belongs, the PG name located next to the PG, and its entry Is read by the disk reproducing device. Since V0B # 4 belongs to PG2 and the next PG becomes PG3, the disk reproducing apparatus starts reading V0B # 6, which is one entry V0B of PG3.
- the disc playback device If the operator instructs the disk playback device to “move to the next PG” while the disk playback device is reading V0B # 4, the PG map to which V0B # 4 belongs and the PG map In, the PG name entry V0B located at the beginning is read by the disc player. Since the first PG becomes PG1, the disc reproducing apparatus starts reading V0B # 1 which is one entry V0B of PG1.
- the “rPGC command table” stores addition / subtraction commands and branch commands associated with the “V0B position information table”.
- the disc playback device executes the command described here before and after reading the VOB based on the “OB position information table”.
- the “PGC user operation restriction information” indicated by the reference code “all” indicates whether the function is executed as per the above operations (permission) or the operation is denied (non-permission) when a key interrupt signal for trick play is generated.
- This is a table listing the conditions of permission-non-permission, and its use is similar to the PCI user operation restriction information included in the management information pack.
- the PCI user operation restriction information is contained in the VOB unit
- the PGC user operation restriction information is contained in the PGC information. Restriction information is that the period during which it is deployed on the hardware is extremely long compared to the PCI user operation restriction information.
- the PCI user operation restriction information exists as many as the number of V0B units, it is constantly updated at a time frequency of 0.5 seconds, whereas the PGC user operation restriction information is stored in the buffer. While all the VOBs described in the ⁇ 0 ⁇ position information table ”are being read, they are loaded into the buffer. Of course, when all the VOBs described in the “V0B location information table” are read out, the PGC user operation restriction information on the ⁇ , 'buffer is overwritten by the following PGC information. If so, it takes a certain amount of time to reproduce all the VOBs described in the “V0B location information table”, and one PGC user operation restriction information can be used for about a few minutes. If the key interrupt requesting the execution of trick play occurs for a period of time sufficient, the disc playback device will execute the PGC user operation restriction information in the PGC information. It is determined whether to execute or reject the interrupt processing depending on the contents.
- the second difference is that the PCI user operation restriction information is special only during the period in which the specific video content (such as the advertising and rules mentioned above) appears during the VOB playback. While the PGC user operation restriction information is used for rejecting the activation of the interrupt processing for playback and accepting the rest, the PGC user operation restriction information is based on the ⁇ V0B position information table '' in the same PGC information. While the video content of the VOB is displayed on the screen, it is used for disabling the activation of the interrupt processing for trick play regardless of the video content.
- the PCI user operation restriction information synchronizes with the video content of each V0B unit, rejecting the activation of the special playback interrupt process only during the time when the specific video content is appearing, and accepting other times.
- the PGC user operation restriction information is based on the ⁇ position information table of the PGC information, and what VOBs appear on the screen in sequence (( ⁇ position information table) is the VOB Is specified, the rules are set as to whether the activation of special playback is appropriate or not.
- the “V0B location information table” of PGC information # 31 reads out only the selected VOBs related to the Hawaiian Islands course.
- the PGC user operation restriction information of PGC information # 31 prohibits the activation of fast-forward interrupt processing.
- the PGC information # 31 will be recorded on the optical disc as a “fast-forward invalid playback path” for viewing the selected scene.
- the OB position information table of PGC information # 32 is intended to be viewed as a digest video by reading only the top part of all VOBs of the live-action video of the Hawaiian Islands course. It is assumed that the PGC user operation restriction information of PGC information # 32 permits activation of fast-forward interrupt processing. As a result, the PGC information # 32 is recorded on the optical disc as a “fast-forward playback path”. Initiation of the fast-forward interrupt process to view in a short time in the course is rejected in PGC information # 31, but is possible in PGC information # 32.
- the PGC information # 31 and the PGC information # 32 are differentiated from each other while playing the same video content, such as "fast-forward playback invalid playback route" and "fast-forward playback possible playback route".
- the third difference is that the PCI user operation restriction information cannot be set for the force-solving operation and the confirmation operation for the menu drawn by the sub-video, whereas the PGC user operation restriction information depends on the sub-video. The point is that the force-sol operation and the confirmation operation on the drawn menu can be rejected.
- a “control mechanism with two aspects” can be provided.
- the “two aspects” here mean that control information related to fast forward, rewind, angle switching, and interactive operation is preserved in the management information pack, but activation of functions that use them on the PGC information side is disabled.
- the user operation restriction information on the PGC information side sets the DSI bucket in the management information pack, ⁇ ( ⁇ ).
- ⁇ The title creator can freely adjust whether or not it is open to the operator up to this point.If such an adjustment is applied, the playback path that provides full interactivity and all or one of the interactive control contents can be adjusted.
- a playback path for the demonstration to be executed after the division is set in one optical disc, and these playback paths are switched as appropriate according to the situation in which the optical disc is played. It can be used Te.
- the control based on the highlight information includes moving the cursor up, down, left, and right, and executing a highlight command at the time of confirming operation.
- Command execution is disabled by the PGC user operation restriction information in the PGC information, and when playback is being performed based on the PGC information, the user can perform up, down, left and right forces-'nor movement.
- the highlight command is not executed even if the enter operation is pressed once and the confirmation operation is performed. In the example of Fig. 8, it can be said that even if the force-sol transitions between the items in the "Recommended course" and the "Content selection course", the branch command associated with each item is not executed. A phenomenon occurs.
- PGC information which combines PGC user operation restriction information that partially disables interactive operations and branch commands that automatically determine branch destinations, is sold as an auto demo version of Travel Mook. Can be used for In other words, a beautiful live-action video is played at the storefront, and items are displayed in accordance with this to attract the passing passersby. While at the same time, it is forbidden at stores to use the highlight command, which is the key to the interactivity.
- PGC information for demonstrations in which interactive operations have been partially disabled in addition to highly interactive PGC information, switching between the two reproduction paths for "product" and "for demonstration” I can do it. This concludes the description of the differences from the PCI user operation restriction information, and describes the details of the PGC user operation restriction information individually.
- the vertical line below the reference sign all in Fig. 12 is PGC general information.
- PrevPG_Search (), TopPG-SearchO, etc. Indicates that the activation of the process is individually defined.
- PGC General information.
- Backward—Scan () is a function corresponding to the operation when the operator performs a rewind playback operation while V0B is being read by the PGC information including the PGC general information.
- Lbit information expresses the permission / denial rule of whether to execute or reject the embedded data.
- Forward_Scan () is an interrupt corresponding to the operation when the operator performs fast forward playback operation during the period when V0B is read by the PGC information including the PGC general information.
- the permission or rejection of whether to execute or reject processing is expressed by lbit information.
- PauseJ) n () reads V0B based on the PGC information including the PGC general information. If the operator performs a pause operation during the period during which the operation is suspended, the permission or rejection of whether to execute the interrupt processing corresponding to the operation or reject it is expressed by lbit information. I have.
- Angle_Change () is a function corresponding to the angle change operation performed by the operator during the period when V0B is read by the PGC information including the PGC general information.
- the permission / refusal rule for executing or rejecting the embedded data is expressed by lbit information.
- SubPicture_Stream_Change ⁇ is an interrupt processing corresponding to the operation when the operator performs sub video data switching operation during the period when V0B is read by PGC information including the PGC general information. Whether to execute or reject is expressed by lbit information.
- Audio_Stream_Change responds to the operation when the operator performs audio data switching operation during the period when V0B is read by PGC information including the PGC general information.
- the permission or rejection of whether to execute or reject the interrupt process is expressed by lbit information.
- Upper. Item_Select () ii Move the peripheral position information in the highlight information when the operator presses the upper force-sol key during the period when V0B is read by the PGC information including the PGC general information.
- the lbit information expresses the permission / prohibition of moving or rejecting the force-sol to the upper item as specified by the previous item.
- Lower_Item_Select ⁇ is the destination item of the peripheral position information in the highlight information when the operator presses the down-'/' key during the period when V0B is being read by the PGC information including the PGC general information.
- the lbit information expresses whether to move or reject the force-sol to the item below as specified by lbit information.
- Right_Item_Select ⁇ specifies the destination item of the peripheral position information in the highlight information if the operator presses the right force-sol key during the period when V0B is being read by the PGC information including the PGC general information
- the lbit information expresses the permission or rejection of moving or rejecting the force-sol to the right item in the street.
- Left—11 em—Select () is the peripheral position information in the highlight information when the operator presses the left force-sol key during the period when V0B is being read by the PGC information including the PGC general information.
- the lbit information expresses whether or not to move or reject the force-sol to the left item as specified by the destination item.
- Item_Activate executes the command in the highlight command field corresponding to the item information when the operator performs a confirming operation during the period when V0B is being read by the PGC information including the PGC general information.
- the permission or rejection of execution or rejection is expressed by lbit information.
- PGC General information.
- Menu (Volume) responds to the volume menu reading operation performed by the operator during the period when V0B is being read by the PGC information including the PGC general information.
- the permission / refusal rule of whether to execute or reject the interrupt processing is expressed by lbit information.
- NextPG_Search responds when the operator performs an operation to instruct the reading of the next PG during the period when V0B is being read by the PGC information including the PGC general information.
- the permission / rejection rule of whether to execute or reject the interrupt processing is expressed by lbit information.
- PrevPG_Search (), TopPG-SearchO is an operation in which the operator instructs reading of the previous PG and reading of the first PG during the period when V0B is read by the PGC information including the PGC general information.
- the permission / refusal rule of whether to execute or reject the interrupt processing corresponding to the operation is expressed by lbit information.
- PrevPG_Search (), TopPG-Search () description has been postponed, but PCI general information.
- PrevPG_Search (), TopPG-Search () functions are basically PGC-General information ⁇ Menu-Call (Volume)-PGC-General information.
- PrevPG_Search (), TopPG_Search () This function is the same as the function described above, and whether to accept functions such as volume menu and PG jump is set for each G0P.
- the data structure of each PGC information shown in FIG. 11 is as described above.
- FIG. 13A Forward_Scan is set to non-permitted in the PGC general information of PGCiU, and the recording position of V0B # 9 is described in the V0B position information.
- PGC # 2 PGC general information is set to Permit Forward Scan, and V0B position information describes the recording positions of V0B # 1, V0B # 2, V0B # 3, V0B # 7, and V0B # 8. .
- the PGC general information of PGC # 3 is set so that Forward Scan is not permitted, and the V0B position information describes the recording positions of V0B # 1 and V0B # 4.
- Forwarcl_Scan is disabled for the general information of PGC # 5, and the recording position of V0B # 2 and V0B # 5 is described in the V0B position information.
- Forward-scan of PGC # 6 general information of PGC # 6 is set to non-permission, and the V0B position information indicates the recording position of Rank 3 and V0B # 5.
- the PGC # 7 PGC general information Forward_Scan is set to non-permitted, and the V0B position information describes the recording position of V0B # 7.
- Forward-scan of PGC # 8 general information of PGC # 8 is set to non-permission, and V0B position information describes the recording position of V0B # 8
- V0B # 1, V0B # 2, V0B # 7 and ⁇ '0B # 8 are described in the "V0B location information table" of PGC information # 2 because PGC information # 2 is This means that it is a playback route of the digest version that collected the scenes.
- other PGC information # 1, 5 to 8 describe the recording location of one or two V0Bs in the “V0B position information table”. It is intended that the other PGC information has been edited to introduce the contents of each V0B individually.
- Forward_Scan ⁇ is set to permitted, and PGC general information of other PGC information.
- Forward_Scan () is set to non-permitted. This is because PGC information # 2 is a digest version, and the title creator has set it so that the operator can quickly view the recorded contents by fast-forward playback.
- PGC information is provided to introduce the details of the leisure contents, so that the operator can look at the information at a leisurely and branch destination by ensuring that the item is confirmed in the menu. Is intended to be surely selected.
- the configuration of the video manager consists of a video object and a PGC management information table, and it can be said that it complies with the data structure of the video title set.
- the Video Manager is specialized for volume menus.
- the volume menu is a menu for displaying a list of all the titles recorded on the optical disc and for selecting any one of the titles. When the optical disc is loaded into the disc reproducing apparatus, the volume menu is displayed. Displayed on the screen immediately after the pickup moves from the volume management area to the file area.
- VOB of the video title set contains video data, sub-picture packs and audio packs of live-action video as shown in Fig. 5, while VOB of the video manager It only contains a video pack, a sub-picture pack, and a management information pack for the background video.
- the branch destinations of the branching commands described in the PGC information and highlight information of the video title set do not exceed the range of the video title set, but are described in the video manager.
- the branching command is a point that branches to the titles of a number of video title sets on the optical disc and straddles between the video title sets.
- Figure 32 shows the data structure of the video manager. As shown in FIG. 32, the “video manager” is composed of a “video object for menu”, a “PGC management information table for menu”, and a “title search pointer table”.
- Video object for menu is, as its name implies, a VOB specialized for volume menus. That is, it includes a sub-picture back for displaying a volume menu, and a management information pack for performing reproduction control according to a cursor operation and a confirmation operation on the menu.
- FIG. 33 is an explanatory diagram of a display image for a volume menu.
- the volume object video object has a plurality of items y61, y612, y613, and y616. These items are for specifying one of the following titles: “Travel Mook” Hawaii Island Course ”“ Travel Mook ”Guam Course”. When the user performs a confirmation operation on such an item, a title to be reproduced is specified.
- the management information pack in the same VOB is Highlight information on the number of tolls is entered. In the highlight command field of the highlight information, a "TitlePlay" command in which each video title set and each title is a branch destination is stored.
- the “menu PGC management information table” is PGC information specialized for volume menus, and describes the recording location of the menu VOB so that the menu VOB can be read out when loaded into a disc playback device. ing.
- This PGC information, the optical disk is a result c that loaded the light Pikkuatsupu the disk reproducing apparatus is read by the disc reproduction apparatus immediately after moving to the file area from the volume management area, volume menu is to appear on the screen .
- “Title search bottle table” is an index for specifying the title number to which each title belongs in the title set to which each title belongs and the title set II.
- FIG. 14 is a view showing the external appearance of the DVD player 1, the television monitor 2, and the remote controller 91.
- the DVD player 11 has an opening in the front of the housing, and a drive mechanism for setting an optical disk is provided in the depth direction of the opening.
- a remote control receiver 92 having a light receiving element for receiving infrared rays emitted by the remote controller is provided, and when an operator operates the remote controller held by the operator, the remote controller receiver 92 becomes Generates an interrupt signal indicating that the key signal has been received.
- a video output terminal and an audio output terminal are provided on the back of the MD player.
- the video signal reproduced from the DVD can be output to a large TV monitor 2 for home use. it can.
- This allows the operator to enjoy MD playback images on a 33-inch or 35-inch large home television.
- the DVD player 1 of the present embodiment is not used by being connected to a computer or the like, but is used together with the television monitor 2 as a household electric appliance.
- the remote controller 91 is provided with a keypad urged by a panel on the surface of its housing.
- the code corresponding to the pressed key is output by infrared rays.
- a cylindrical jog dial 8100 having a diameter of about 4 to 5 cm is arranged on the panel of the remote controller. When the operator twists the jog dial, the twist angle is converted into an electric signal by a rotary encoder. A / D converted values are output as infrared rays
- FIG. 15 is a block diagram showing the internal configuration of the DVD player in the present embodiment.
- This DVD player comprises a drive mechanism 16, a mechanism control section 83, a signal processing section 84, an AV decoder section 85, a remote control receiving section 92, and a system control section 93.
- the AV decoder section 85 is composed of a signal separating section 86, a video decoder 87, a sub-picture decoder 88, an audio decoder 89, and a video synthesizing section 90.
- the drive mechanism 16 includes a base on which an optical disk is set, and a spindle motor 81 for rotating the set optical disk by clamping it.
- the base on which the optical disk is set is moved back and forth inside and outside the housing by an unillustrated X-X mechanism. With the base moved to the outside of the housing, the operator mounts an optical disk.c The optical disk is mounted on the base, and when the base moves inside the MD player, the optical disk is loaded on the MD player. You.
- the mechanism control unit 83 controls a mechanism system including a motor 81 for driving the disk and an optical pickup for reading a signal recorded on the disk. Specifically, the mechanism control unit 83 adjusts the motor speed according to the track position specified by the system control unit 93. At the same time, the pickup position is moved by controlling the actuator of the optical pickup, and when an accurate track is detected by the servo control, rotation is waited until a desired physical sector is recorded, and continuous from the desired position. Next, the signal is read.
- the signal processing unit 84 performs processing such as amplification, waveform shaping, binarization, demodulation, and error correction on the signal read from the optical pickup, converts the signal into a digital data string, and converts the signal into a system control unit 93. Stored in logical blocks in buffer memory (described later).
- the AV decoder unit 85 performs predetermined processing on the input digital data V0B. And convert it to a video or audio signal.
- the signal separation unit 86 receives the digital data sequence transferred from the buffer memory in units of logical blocks (buckets), and determines the stream ID in the header of each packet and the substream ID in the data field. In this way, video data, sub-picture data, audio data, and management information are sorted. In this distribution, the moving image data is output to the video decoder 87. The audio data is output to the audio decoder 89, and the sub-picture data is output to the sub-picture decoder 88, respectively. The management information pack is output to the system control unit 93. At that time, the number of the signal separation unit 86 is designated by the system control unit 93.
- This number indicates one of the audio data A, B, and C and the sub-picture data A and B shown in the explanatory diagram of FIG. 5.
- the signal separation unit 86 The number is output to the audio decoder 89 and the sub-picture decoder 88, respectively. Then, the data other than the number is discarded.
- FIG. 16 is a block diagram showing the configuration of the signal separation unit 86 in FIG. 15 c .
- the signal separation unit 86 includes an MPEG decoder 120, a sub-picture / audio separation unit 1 It consists of 21 sub-picture selection section 122 and audio selection section 123.
- the MPEG decoder 120 determines the type of pack for each data pack transferred from the buffer memory by referring to the stream ID in the pack header. If the data pack is “1110 0000”, the video decoder 8 Output to 7. If it is “1011 1101”, it outputs to the sub-picture / audio separation unit 1221, and if it is “1011 1111”, it outputs the bucket data to the system control unit 93.
- the sub-picture / audio separation unit 122 outputs the bucket input from the MPEG decoder 120 to the sub-picture selection unit 122 if the sub-stream ID in the bucket header is "001 * ntj". If the substream ID is “1010 0 *” “1000 0 *** J”, the data is output to the audio selection unit 123. As a result, the sub-picture data of all numbers and all audio data are Output to the sub-picture selection unit 122 and the audio selection unit 123.
- the sub-picture selection unit 1 2 2 is the sub-picture data from the sub-picture / audio separation unit Among them, only the sub-video data of the channel number specified by the system control section 93 is output to the sub-video decoder 88. Sub-picture data other than the specified channel number is discarded.
- the sub-picture data ⁇ and ⁇ shown in the explanatory diagram of FIG. 5 are English and French subtitles, respectively, and the sub-picture channel ⁇ is designated by the system control section 93, the sub-picture selecting section 122 becomes Only sub-picture bucket A is output to sub-picture decoder 88, and sub-picture buckets B and C are discarded. As a result, only the English subtitles are decoded by the sub-picture decoder 88.
- the audio selection section 123 outputs to the audio decoder 89 only the audio data of the number specified by the system control section 93 among the audio data from the sub-picture / audio separation section 121. Audio data other than the specified number is discarded. For example, when the audio data A, B, and C shown in the explanatory diagram of FIG. 5 are English, French, and Japanese, respectively, and the audio data A is instructed by the system control unit 93,
- the audio selector 123 outputs only the audio packet A to the audio decoder 89, and discards the audio buckets B and C. As a result, only the English voice is decoded by the audio decoder 89.
- the video decoder 87 decodes and expands the moving image data input from the signal separation unit 86, and outputs it to the video synthesis unit 90 as a digital video signal.
- the sub-picture decoder 88 decodes and decompresses it * and expands it in the same format as the video signal. Output to 0.
- the system controller 9 3 instructs a item c I main one Jideta a plurality of is also possible to convert the Karaparetsu bets image data operator for these items to move cursor
- the system control unit 93 gives a palette conversion instruction (also referred to as a color change instruction) for the image data to the sub-video decoder 88. Since this color conversion instruction is performed based on the item color number in the highlight information, the item is switched to the selected color or the confirmed color by this color conversion instruction. By switching between the selected color and the determined color, the cursor transitions between items.
- the de-decoder 89 decodes and decompresses the audio data input from the signal separation unit 86 and outputs it as a digital audio signal.
- the video synthesizing section 90 outputs a video signal in which the output of the video decoder 87 and the output of the sub-video decoder 88 are mixed at a ratio specified by the system control section 93.
- This mixture ratio is based on the contrast described in the “item color information” of the highlight information, and can be changed for each G0P.
- This signal is converted to an NTSC (National Television System Committee) video signal and then input to the TV monitor 2.
- NTSC National Television System Committee
- the system control unit 93 controls the entire DVD player and has the internal configuration shown in FIG. According to FIG. 17, the system control unit 93 includes a buffer memory 94, a management information pack buffer 95, an embedded processor 96, a PGC information buffer 31, a highlight information buffer 32, and a PCI It has user operation restriction information file 33.
- the embedded processor 96 is configured by integrating a ROM that stores a control program for the entire DVD player 11, a working memory, and a CPU.
- the CPU extracts the addition / subtraction commands and branch commands from the highlight information buffer 33 sequentially, a command buffer that stores the retrieved addition / subtraction commands and branch commands, and decodes the opcodes and operands in the command buffer.
- An arithmetic unit that performs the operation of the operation content indicated by the operation code with the contents held in the register and the i value stored in the command buffer, and the operation result and operand of the operation unit are described.
- Data that has undergone processing such as amplification, waveform shaping, binarization, demodulation, and error correction is written to the buffer memory 94. If the written data is video title set management information, it is loaded into a buffer (not shown). On the other hand, if it is V0B, the system control section 93 transfers to the signal separation section 86 one pack at a time. With this transfer, the management information pack is returned from the AV decoder unit 85.
- the management information pack buffer 95 is a buffer for storing the management information pack returned from the signal separation unit 86.
- the embedded processor 96 stores stored management information. By referring to the “changed flag from previous V0B unit” included in the general highlight information in the information pack, an instruction to overwrite the highlight information stored in the highlight information buffer 32 or An instruction to overwrite only the highlight command is given to the management information pack buffer 95. With this instruction, the management information pack buffer 95 overwrites the content held in the highlight information buffer 32 with the highlight information of the management information pack held by itself.
- the PGC information buffer 31 stores the currently selected PGC information.
- a PGC user operation restriction information buffer for storing PGC user operation restriction information.
- the PGC user operation is performed according to the format shown in Fig. 12. Restriction information is accumulated.
- the embedded processor 96 performs PGC general information in the PGC user operation restriction information stored in the PGC user operation restriction information buffer.
- PrevPG-Search (), TopPG—SearchO By referring to, when the remote control operation is performed, it is determined whether or not to execute a function such as fast forward or rewind according to the operation.
- the highlight information buffer 32 is a buffer whose internal area is divided into a plurality of small areas. Highlight information is stored in each small area in the format shown in Fig. 9B.
- the embedded processor 96 appropriately extracts the destination of the cursor, the select color, the confirmed color, and the highlight command from the highlight information buffer 32.
- the highlight information stored in the highlight information buffer 32 is overwritten by a new one stored in the management information pack buffer 95 according to an instruction of the embedded processor 96. That is, the highlight information buffer 32 stores only the highlight information necessary for the location where the V0B is currently playing out of the huge amount of management information packs interleaved in the V0B.
- the PCI user operation restriction information buffer 33 is a buffer for storing the PCI user operation restriction information in the management information pack. Each time new PCI user operation restriction information is accumulated in the management information pack buffer 95, the embedded processor 96 accumulates the PCI user operation restriction information in the item information buffer 33. As a result, the form shown in FIG.
- the PCI user operation restriction information is stored in the PCI user operation restriction information buffer 33 as per the mat.
- the embedded processor 96 receives the PCI user operation restriction information stored in the PCI user operation restriction information buffer 33 PCi general information in the PCI user operation restriction information. Backward_Scan () to PCI general information.
- PrevPG SearchO TopPG By referring to SearchO, when a remote control operation is performed, whether or not to execute a function such as fast-forward or rewind according to the operation is determined.
- the channel register 99 individually stores the audio channel number, the sub video channel number, and the angle position number, and increments these numbers according to the number of times the angle switch key, the sub video switch key, and the audio switch key are pressed.
- the channel register 9 switches the channel number in the order of A, B, C in accordance with the pressing of the audio switching key. When the number of presses reaches the third time, switch from channel number C to channel A.
- the channel register 99 switches the channel numbers in the order of ⁇ and ⁇ in response to the pressing of the sub-picture switching key.
- the number of presses reaches the second time, switch from channel number ⁇ to channel ⁇ .
- the channel register 99 switches the angle position number in the order of A, B, and C according to the depression of the angle switch key.
- the number of presses reaches the third time, it switches from angle position number C to angle position number A.
- the channel register 99 cyclically increments according to the number of times the angle switch key, the sub-image switch key, and the audio switch key are pressed. Of these, the numbers of the audio data and sub-picture data stored in the channel register are output to the system decoder 86 as channel control signals.
- a control program for interrupt processing in response to a key press of the remote controller 91 is described in a ROM incorporated in the embedded processor 96. Procedures for the system control unit 93 to determine the type of the key interrupt when the remote controller presses the key interrupt are shown in the flowcharts of FIGS. 21A and 21B.
- FIGS. 21A and 21B are configured to switch the interrupt processing depending on what kind of operation is performed on the panel on the remote controller 91.
- the panel configuration of the remote controller 91 is shown in FIG. As shown in Fig. 18
- On the panel of button 91 there are an angle switch key 81, a sub-image switch key 802, a VolmeMen key 803, an audio switch key 804, a PG jump key 805, a pause key 8 0 7 and a jog dial 8 10 are provided.
- the process shifts to a series of determination steps of Steps 152 to 160 in FIGS. 21A and 21B.
- Steps 152 to 160 are sequentially executed until any of the steps becomes “Yes”. If the angle switching key 801 is pressed, the result is Yes in step 153, and the flow chart of the interrupt processing shown in FIG. 24 is executed. If the sub-picture switching key 802 is depressed, the result is Yes in step 154, and the flowchart of the interrupt processing shown in FIG. 23 is executed.
- step 157 If the VolmeMen key 803 is pressed, the result is Yes in step 157, and the flowchart of the interrupt processing shown in FIG. 26 is executed.
- the pause key 807 is depressed, the answer is Yes in step 155, and the interrupt processing flowchart shown in FIG. 25 is executed.
- the PG jump key 805 is pressed, the flow chart of the interrupt processing shown in FIG. 27 is executed.
- the jog dial 810 is rotated, the result is Yes in step 152, and FIG. 22 is executed.
- step 159 If the force-sol key is pressed, the result is Yes in step 159, and in step 202, reference is made to the PGC user operation restriction information to determine whether the force-sol movement operation is permitted. If so, in step 200, force-sol is transitioned between items using the item information.
- step 160 When the Enter key is depressed, the result is Yes in step 160, and in step 203, the PGC user operation restriction information is referred to determine whether the confirmation operation is permitted. If it is permitted, in step 201, a branch command or an addition / subtraction command is read from the highlight command field of the item information of the item number, and the c interrupt processing for executing the command is performed as shown in FIG.
- FIG c seven of those shown in the second 7 Figure is Ento Lee fast-forward key, presses the rewind key, illustrating the procedure of our Keru interrupt processing to the rotation of the jog dial 8 1 0.
- Forward One Scan () And PGC-General Information. Refer to Forward-ScanO. If either is not permitted, return without performing anything.If both are permitted, the first I-picture address in the management information package is read in step 171, and this address is read in step 172.
- the video decoder 87 reads out the I picture. After reading the I-picture, determine the traveling direction of the optical pickup according to the type of key pressed in step 1-6 and the direction of rotation of the jog dial.
- step 173 determines the skip amount in the range of 1 to 15, 20, 60, 120, 240 based on the type of the pressed key and the rotation amount of the jog dial 8 10.
- step 1 74 the DSI in the management information pack developed on the management information pack buffer 95 is referred to, and the management information pack of the jump destination based on the traveling direction and the skip amount determined from the double speed search information table is referred to. Get the dress.
- the system control unit 93 instructs the mechanism control unit 83 to proceed to step 175 to advance the optical pickup to the calculated management information package address.
- FIG. 23 shows the procedure of the interrupt processing when the audio channel switching key and the sub-video channel switching key are pressed.
- the process proceeds to step 161 in the flowchart of FIG. 23, it is determined whether the pressed audio channel switching key or the sub-video channel switching key is pressed, and the audio channel switching is performed. If it is a key, it is determined whether one of PGC general information Audio_Stream_Change () and PCI general information Audio- Steram_Change () is not permitted.
- step 162 the channel number of the sub-picture data or audio data is incremented in the channel register, and the incremented channel number (referred to as channel number i) is extracted.
- step 163 the signal separation section 86 is instructed to decode the channel 7 of only the extracted channel number. According to this instruction, the audio pack ⁇ to the sub-video packs A to B in FIG. 5 which are to be decoded are switched.
- Fig. 25 shows the procedure of interrupt processing when the pause key is pressed.
- step 181 it is determined whether one of Pause_ () of PGC general information and Pause- () of PCI general information is not permitted. If either is non-permitted, return without executing anything.If both are permitted, the control of the mechanism control unit is temporarily stopped in step 185 to cause the buffer in the video decoder to underflow. . Then, in step 186, the video decoder is kept in a frozen state. As a result, a still image is displayed on the screen.
- FIG. 26 shows the procedure of interrupt processing when the VolmeMen key is pressed.
- step 210 it is determined whether one of PGC general information Menu-Call () and PCI general information Menu_Call () is not permitted. If either is not permitted, return without performing anything.If both are permitted, the video manager recording location is obtained from the file system management information in step 211, and the video manager is started in step 211. Open the file and read the menu PGC information into the PGC information buffer.
- step 2 13 the menu video objects are sequentially read out based on the menu PGC information, the menu image is displayed on the screen, and the highlight information of the menu video object is expanded in the highlight information buffer ( step 2).
- the remote control receiver waits for reception of an interrupt signal from the remote controller.In this reception wait, the signal code of the cursor key-Enter key and the numeric key is transmitted from the remote controller. Upon receipt of these, in step 211, processing is performed based on the contents of the menu video object. U. The details are the same as the procedure shown in the flowchart of FIG. 21B.
- Fig. 27 shows the procedure of interrupt processing when the next PG, previous PG, or first PG search key is pressed. In step 191 of FIG. 27, it is determined whether one of PG_Search () of PGC general information and PG_Search () of PCI general information is not permitted.
- the PG jump key pressed in step 19 2 is the key to “move to the next PG”, the key to ⁇ move to the previous PG, or the key to “move to the first PG”. Is determined.
- the PG number of the PG where the optical pickup is currently located is referred to by referring to the PG map, and the “Next”, “Previous”, and “Top” PG numbers are determined.
- the V0B number of the entry one V0B of the PG is obtained from the PG map of the PGC information. In the step, the V0B position information of the V0B number of the entry V0B is instructed to the mechanism control unit 83.
- FIG. 19A is an overall flow showing the processing contents of the system control unit 93. The operation of the DVD player 11 will be described with reference to FIG.
- the base moves to the outside of the housing. With the base moved outward, the operator mounts the optical disk. When mounted on the base and the base moves inside the DVD player, the optical disc is loaded into the MD player.
- the system control unit 93 is in a state of waiting for insertion of an optical disk in step 121.
- the rotation of the disk is controlled by controlling the mechanism control unit 83 and the signal processing unit 84 while keeping the optical pickup 82 in the lead-in area. Continue rotating the disk while it is still in the lead-in area until the rotation is stabilized.
- the optical pickup is moved from the lead-in area to the outer periphery, and the volume management area is read.
- the video manager is read out based on the information in the volume management area (step 122).
- the system control unit 93 refers to the video manager menu PGC management information table, calculates the recording address of the program menu for the volume menu, reproduces the address, and stores it in the PGC information buffer 31. If the program menu for the volume menu is stored internally, the system control unit 93 refers to the stored PGC information and plays the video.
- the object (VOB) and its recording address on the optical disk are calculated.
- a control signal is output to 83 and the signal processing section 84, and the determined video object is taken out of the optical disc and played.
- the volume menu shown in FIG. 33 is displayed on the TV monitor 2 (step 123).
- a "PlayTitle" command is stored as a highlight command of a menu item, and a title number is stored as a parameter thereof, and this highlight command is executed by the system control unit 93 (step 125).
- the system control unit 93 refers to the title search pointer table which is a part of the video manager, and determines the video title set (VTS) to which the video title belongs and the title number in the VTS. .
- VTS video title set
- the system control unit 93 outputs a control signal to the mechanism control unit 83 and the signal processing unit 84, and reproduces the video title set management information of the determined title set.
- the video title set section title search pointer table which is a part of the video title set management information, is taken out (step 126). If the video title set section title search pointer table can be retrieved, the system control section 93 refers to this and determines the PGC information of the program chain for starting the reproduction of the title to be reproduced. Once the PGC information is determined, the system controller
- the system control unit 93 outputs a control signal to the mechanism control unit 83 and the signal processing unit 84, reproduces the determined PGC information, and stores this in the internal PGC information buffer 31. At this time, the stored PGC information for the volume menu will be overwritten. If the PGC information for title playback start is held, the system control unit 93 refers to the held PGC information to determine the video object to be played and the recording address thereof, and determines the determined video object. Playback is controlled by the mechanism control unit 83 and the signal processing unit 84. Outputs a control signal.
- the system control unit 93 sequentially determines video objects to be reproduced according to the held PGC information and controls the reproduction.
- the system control unit 93 refers to the PGC connection information that is a part of the PGC information and determines the next PGC information.
- the system control unit 93 which has determined the next PGC information, discards the current PGC information, retains the next PGC information, and continues the reproduction in accordance with the discarded information (step 128).
- FIGS. 10A to 10C and 13 how the software control of the flowchart shown in FIG. Fig. 1 schematically shows this.
- Arrows R100, R101, R102, R103 * "*" in the figure indicate the manner in which PGC information is read out to the PGC information buffer 31 by steps 127 and the like in FIG. 19A.
- the arrow R100 indicates that the PGC information # 1 shown in FIG. 13A is read into the PGC information buffer 31.
- the arrow R101 indicates that when the highlight command included in V0B # 9 is executed in step 201 of FIG. 21B, the PGC information buffer 31 stores the PGC information # shown in FIG. 13A # 2 shows a state of being read.
- the arrow R102 indicates that when the highlight command included in V0B # 9 is executed in step 201 of FIG. 21B, the PGC information buffer 31 stores the PGC information # 3 shown in FIG. 13A. This shows how is read.
- Dashed arrows K100, K10, K102, K103, K104, K105, and K106 in the figure show how the optical pickup moves to the VOB recording start position by step 1334 in FIG.
- arrow K101 indicates that when step 1 34 in FIG. 20 is executed for VOB position information of V0B # 1 of PGC information # 2 shown in FIG. 13A, V0B # This shows how the optical pickup moves to the head position of the recording location of No. 1.
- Arrow K102 indicates that V0B # 2 is recorded when step 1 34 of FIG. 20 is executed with respect to V0B position information of V0B # 2 of PGC information # 2 shown in FIG. 13A. This shows how the optical pickup moves to the head of the location.
- FIG. 20 shows how the optical pickup moves to the head position of the recording location of V0B # 1 when step 13 of FIG. 20 is executed.
- the outline arrows F101, F102, and F103 "" in this figure indicate the manner in which the recording location occupied by V0B is scanned by the optical pickup in steps 135 and 136 in FIG. I have. If individually explained, the arrow F101 points to the ⁇ 0 ⁇ position information table in Fig. 13A, and when step 1 35 and step 1 36 in Fig. 20 are repeatedly executed, VOB 9 The figure shows how scanning is performed.
- the arrow F102 indicates that when Steps 13 and 13 of FIG. 20 are repeatedly performed on the “V0B position information table” of FIG. 13A, V0B # 1 is The state of being scanned is shown.
- the arrow F103 indicates that the optical pickup scans V0B # 2 when the steps 1 35 and 1 36 in FIG. 20 are repeatedly performed on the “V0B position information table” in FIG. 13A. It shows how it is done.
- the PGC information buffer 31 stores PGC information # 1.
- the V0B position information of PGC information # 1 describes the recording position of V0B # 9 as shown in FIG. 13A.
- the system control unit 93 reads the V0B position information of V0B # 9 from the V0B position information table of PGC information # 1, and based on this V0B position information, the start position of the recording location Is instructed to access the mechanism control unit 83.
- the system controller 93 in step 136 causes the mechanism controller 83 to read data from the head position. To instruct.
- the mechanism control unit 83 drives the optical disc to rotate.
- V0B is read out in packs sequentially from the start position of the recording location.
- a menu including two items, “recommended tour” and “select tour contents” is drawn on the screen by the sub-picture data of GOP100 to GOP200 shown in FIG. 10C.
- These G0P management information packs contain item information.
- Information # 1 and item information # 2 exist and are paired with each item. Specifically, “Link PGC # 2” branches to PGC information in item information # 1, and [Link PGC # 3] branches to PGC information in item information # 2. It is described in. The operator had no idea where to go for the next long vacation, and was searching for a good destination. See the above menu, hold the remote control with your right hand, and press the numeric key corresponding to “Recommended tour” with your thumb.
- step 1337 becomes Yes, and the flow shifts to the flowchart of FIG.
- step 158 the PGC general information is confirmed in step 203. It is confirmed that Item_Activate () is permitted, and the process proceeds to step 201, where item information # 1
- the command is read from the highlight command field of item information # 1 of item information # 2 and executed.
- the command described in the highlight command field is a branch command, and branches to another program chain based on the flowchart of FIG. 19C. The branch processing to the program chain will be described with reference to FIG. 19C.
- 19C shows the processing specific to a branch command that is executed only when the command to be executed is a branch command.
- the program chain number described in the branch destination field of the command is read.
- the number of PGC information # 2 can be read.
- the logical block at the head of the recording location of PGC information # 2 in the PGC management information table is calculated by referring to the head address of the PGC management information table described in the video title set management information. .
- the optical pickup is moved to the logical block calculated by controlling the mechanism controller 83.
- the PGC information # 2 in the logical block data read through the optical pickup and the mechanism control unit 83 is stored in the PGC information buffer 31.
- step 75 the stored PGC information is 20
- the recursive call of the flow chart in Fig. 20 is performed, and the new stored program chain is subjected to the process of "return X-ray playback.”
- the PGC information from the middle of V0B playback # A branch to 2 is made.
- the V0B position information is read from the V0B position information table of the suke6 blue information # 2 shown in Fig. 1338 in step 13 and the V0B # is read in step 13
- the system control unit 93 instructs the mechanism control unit 83 to access the head position of the recording location of No. 1.
- the system control unit 93 reads the logical blocks of the optical disk in order from step 135 to step 1336. Controls part 8 3.
- V0B # 1 is read out in packs sequentially from the start position of the recording location. Accordingly, the packs of GOP00 to GOP200 shown in FIG.
- step 1337 in FIG. 20 becomes Yes, and the flow shifts to the flowchart in FIG. Since the operated jog dial 81 0, the result is Yes in step 152, and the flow shifts to step 170 in FIG.
- the flowchart of FIG. 22 is a flowchart showing the interrupt processing procedure of the system control unit 93 when the fast forward / rewind instruction is given to the remote controller.
- the PCI general information and the user operation restriction information of the PGC general information, where PGC general information.
- Forward_Scan () is set to be allowed, the PCI shown in Fig. 13A is displayed. —General information.
- Step 170 is set to Yes, and the processing of Steps 171 to 175 is skipped, and Steps 135 of FIG. 20 are skipped.
- the advertising image of the airline from the beginning (the ad is displayed GOP250 in V0B # 1 GOP450 pack of the system decoder It is separated at 86, decoded into a video signal by a video decoder 87, and combined with a sub-picture at a video synthesis unit 90, so that a tanned young man enjoys sunbathing, a sight playing with the waves, A few minutes long live-action video that shows the charms of the beach appears on the TV monitor, such as a scene of playing beach volleyball and a conversation with one hand of the surfboard. This is schematically shown in FIG.
- step 1337 in FIG. 20 becomes Yes, and the flow shifts to the flowchart in FIG. Since the jog dial 8 10 has been rotated, the result of step 15 2 becomes “yes”, and the flow proceeds to step 170.
- step 170 PCI general information. Forward_Scan () and PGC general information. Forward_Scan () are referred to. Since these are both set to be permitted, Step 170 becomes No, and the process proceeds to Step 171 and Step 172, where the first I-picture address in the management information pack address is read, and this address is read.
- the video decoder 87 reads out the I picture. After reading the I-picture, proceed to Steps 1 76 and 1 73 to determine the direction of travel and the amount of skip from the direction and amount of rotation of the jog dial 81 0, and search for double speed in Step 17 4 With reference to the information table, a management information pack address corresponding to the determined traveling direction and skip amount is acquired. Subsequently, the system control unit 93 proceeds to step 175 and instructs the mechanism control unit 83 to advance the read position of the optical pickup in the forward direction by the calculated skip amount. As long as the jog dial 810 is rotated, the processing of the above steps 17 1 to 17 5 is repeated.
- the readout position of the optical pickup is skipped in units of an integer multiple of G0P, and management information packs are read out several steps at a time, and only one of about 15 I-pictures in each G0P is read. Appears on the screen.
- V0BS 1 playback was completed in a short time by fast forward playback.
- the repetitive control in step 135 ends, and the flow shifts to step 132.
- the system control section 93 reads the V0B position information of V0B # 2 described after V0B # 1 in the “V0B position information table”, and The logical block described in the V0B position information It instructs the mechanism controller 83 to read data between the mouthpiece and the mouthpiece.
- this Yuku is read in V0B packs units in sequence from the head position of the recording spot by causing repeated "number of blocks" worth of V0B the position information in step 1 3 5, first 0 In V0B # 2 shown in Fig. A, the packs of GOP00 to GOP200 are decoded into a video signal, and are combined with the sub-picture in the video combining unit 90.
- a live-action video introducing the luxurious facilities of the luxury hotel A, such as the VIP room, lobby, guest rooms, and outdoor pool, will appear on the TV monitor.
- V0B position information is sequentially read out in the order of the “V0B position information table”, and the mechanism control unit 8 3 is controlled, and the optical pickup moves to the head position of the recording location of each VOB as shown by arrows K103, K104, ⁇ 105. Then, as indicated by arrows F104, F105, and F106, V0 # is sequentially read.
- V0B # 2 By reading V0B # 2, the packs of GOP250 to GOP200 are decoded into video signals, and a live-action video of about 25 seconds long that introduces the lodging charges and check-in / check-out methods appears on the TV monitor. A live video of several minutes long appears on the TV monitor, introducing various diving precautions and emergency procedures.
- V0B # 8 shows a scene of a lively city scene on the screen, and live-action images appearing on the TV monitor introducing various precautions regarding city behavior and contact information in the event of an accident.
- Step 8 3 come read via the logical block calculated by controlling the mechanism control unit 8 3 c
- Step 8 4 In the optical Pikkuatsupu to move the light Pikkuatsupu, the mechanism control unit 8 3 logical
- the PGC information # 1 in the logical block data is stored in the PGC information buffer 31.
- the system control unit 93 instructs the mechanism control unit 83 to access the head position of the recording location of V0B # 9 again from the V0B position information table of the PGC information # 1, and executes the steps 1 3 5 and 1 3 In step 6, the mechanism control unit 83 is instructed to sequentially read data recorded in the logical block. As a result, V0B # 9 is sequentially read out in pack units from the start position of the recording location.
- item information # 1 highlights F LinkPGC # 2, which branches the playback path to PGC information # 2
- item information # 2 highlights ⁇ LinkPGC # 3, '' which branches the playback path to PGC information # 3. It is described in the command field.
- the operator decides to select the tour destination in the Hawaiian Islands, and presses the numerical value corresponding to “Tour content selection course” with the thumb.
- step 1337 is YES, and the flow shifts to the flowchart of FIG. After the transition, all are No in Steps 152 to 1557, and are Yes in Step 158. If “Yes” in step 158, the process moves to step 201, and reads out and executes the command from the highlight command field of item information # 2 side of item information # 1—item information # 2. .
- the command described in the highlight command field is a branch command
- the PGC information # 3 specified at the branch destination of the command is stored in a buffer, and control according to this is performed. As a result, branching to PGC information # 3 is performed during the playback of V0B.
- V0B position information of V0B # 1 is read from the V0B position information table of PGC information # 3, and is recorded in the logical block at the location where the V0B position information is recorded in step 1 34, step 1 35, and step 1 36.
- Mechanism control to read out the stored data sequentially Instruct part 83.
- V0B is sequentially read out in pack units from the head position of the recording location.
- the packs of VOBGOP00 to GOP200 shown in Fig. 10A are decoded into video signals and synthesized with sub-pictures in the video synthesis unit 90, thereby introducing advertisements for tour companies and airlines. A few minutes long live-action video appears on the TV monitor.
- step 170 becomes Yes, and the processing of steps 171 to 175 is skipped, and the process returns to step 135 of FIG. No matter how many times you fast-forward, you can watch these videos without skipping because the video continues to play.
- the packs of GOP250 to GOP450 are separated by the system decoder 86 and decoded into video signals by the video decoder 87. Then, by being combined with the sub-pictures in the picture synthesizing section 90, a live-action video of several minutes in length, which introduces famous beaches such as a perfect beach and a surf spot, appears on a television monitor.
- V0B position information of V0B # 4 is read from the V0B position information table of PGC information # 4 as the next-order V0B, and step 1 3 4, step 1 3 5 and step 1 3 6 ,
- the data recorded in the logical block of the VOB position information of V0B # 4 is sequentially read. The operator presses the fast forward key without showing interest in these images.
- step 170 is set to Yes and the processing of steps 17 1 to 17 5 is performed. The process is skipped and returns to step 135 of FIG. No matter how many times you press fast forward, the video playback continues, so you can watch these videos from beginning to end.
- GOP100 to GOP200 display a menu in which the hotel grade includes two items such as a deluxe course and an economy course.
- Item information # 1 and item information # 2 correspond to the two items. Have been killed.
- the item information includes a command for switching the reproduction path called LinkPGC # 6, and the item information includes a command for switching the reproduction path called LinkPGC # 5.
- the operator was interested in a luxury hotel in the local area and thought that he would definitely choose this place to stay on his next holiday. Hold the remote control with your right hand and press the value corresponding to the deluxe course with your thumb.
- V0B is sequentially read out in pack units from the head position of the recording location.
- V0B # 2 shown in Fig. 13A shows that the packs of GOP00 to GOP200 are decoded into video signals, and live-action images introducing the luxury facilities of luxury hotel A such as an outdoor pool are displayed on a TV monitor. Appears in
- step 170 Since Forward_Scan () is set to non-permission, step 170 is Yes. Then, the processing of Steps 17 1 to 17 5 is skipped, and the process returns to Step 135 of FIG. No matter how many times you press fast forward, the video playback continues, so you can watch these videos from beginning to end.
- step 135 data reading is continued for the number of blocks described in the V0B position information.
- step 13 of the system control unit 93 data reading is continued for the number of blocks described in the V0B position information in step 1 35.
- step 13 of the system control unit 93 the V0B position information of the next-ranked V0B # 5 is read from the V0B position information table of the PGC information, and in step 1 34, step 1 35, and step 1 36, the V0B position information is recorded in the logical block from here. Are read sequentially.
- the mechanism control unit 83 is controlled so that the optical pickup moves to the head position of the recording location of V0B # 9 as shown by arrow K110, and V0B # 9 as shown by arrow F108. Are sequentially read.
- GOP100 to GOP200 are displayed, and a menu including items that indicate the type of leisure course such as diving and city sightseeing is displayed.
- Time information # 1 and item information # 2 are associated with the two items.
- Item information # 1 includes a command for switching the playback path to PGC 7
- item information # 2 includes a command for switching the playback path to PGC 8.
- the operator holds a license for diving, and on the next holiday he thought he would enjoy it. Hold the remote control with your right hand and press the value corresponding to the diving course with your thumb.
- the PGC information # 7 is read from the optical disk to the PGC information buffer 31 during the reproduction of V0B # 9, and after branching, the recording location is described in the V0B position information table of the PGC information # 7.
- the packs of GOP100 to GOP200 of V0B # 6 shown in the figure are decoded into video signals, and live-action video of several minutes in length introducing coral reefs and tropical fish appears on the TV monitor.
- the packs of GOP300 to GOP400 of V0B # 7 shown in FIG. 10C are read out, separated by the system decoder 86, and decoded into a video signal by the video decoder 87.
- FIG. 34 an example of the realization of an automatic demonstration using the "control structure with two aspects" will be described.
- an arrow R201 extends from the automatic demonstration item y6 16 in the volume menu, and PGC information # 53 is present beyond the arrow.
- PGC information # 53 One is PGC information # 53.
- PGC information # 53 Paying attention to PGC information # 53, from PGC information # 53, V0B # 1 and V0B # 4 are indicated by arrows K106 and K107 similarly to PGC information # 3 shown in Fig. 31.
- the “V0B position information table” is defined so that PGC information # 53 reproduces V0B # 1 and V0B # 4 sequentially in the same manner as PGC information # 3.
- PGC information # 53 and PGC information # 3 The difference between PGC information # 53 and PGC information # 3 is the PGC user operation restriction information and the PGC command table.
- PGC-General information An example of setting PGC user operation restriction information for auto demonstration is shown in Fig. 35. In this figure, PGC-General information. This is to prevent the image from being fast-forwarded by human operation. In addition, pedestrians can listen to demonstration narrations by themselves. This is to prevent being missed.
- Backward-ScanO is set to allow. This is a good thing if Forward-Scan () is set to non-permitted, because if a passerby is interested in the contents of the demo, you can operate rewind. This is to allow the user to watch the video as many times as possible.
- PGC-General information Pause-0n () is also set to be allowed. This is the same reason that PGC-General Info. Backward-ScanO is set to Allowed. This is because if passers-by show interest in the contents of the demonstration, they will be able to watch part of the contents without delay.
- PGC General information.
- Lowerjtem—SelectO are all set to be allowed
- PGC General information. Only Item_Activate () is set to not allowed. I have. This is PGC-General information.
- PGC General Information The reason Item_Activate () is not allowed is to prohibit branching by highlight commands, which are the key to its interactivity, at stores. While the execution of the highlight command is prohibited in this way, the PGC command table reads-After reading all the V0B in which the V0B position information is described in the "V0B position information table"-the PGC information Command to branch to # 55 (The command to be executed by the disc player after reading all V 0 B is called a post-processing command as shown in the figure.) Link PGC # 55 Instructs the disc playback device to automatically branch to PGC information # 55 instead of prohibiting branching by the highlight command.
- V0B # 1 and V0B # 4 displayed by this automatic demonstration are attractive enough to attract passers-by. It is assumed that a passerby approaches the DVD player 11, looks at the menu displayed by V0B # 4, and operates the up / down / left / right keys while holding the remote control 91.
- Steps 135 to 1337 While the reading of the logical block is repeated in Steps 135 to 1337, the system control unit 93 monitors reception of an interrupt signal from the remote control receiving unit 92.
- the step 1337 becomes Yes, and the flow shifts to the flowcharts of FIGS. 21A and 21B.
- step 159 since the force-sol key is pressed by the operator, all are No in Steps 152 to 1557, and are Yes in Step 159. If “Yes” in step 159, the process moves to step 202 and refers to PGC general information. Upper_Item_Select () to PGC general information. Left_Item_Select (). Since these are all permitted, the process moves to step 200. In step 200, a force-sol transition is performed by instructing the sub-picture decoder 88 to change colors.
- the system control unit 93 monitors the reception of the interrupt signal from the remote control receiving unit 92 during the repetition of the reading of the logical block in steps 135 to 1337 in Fig. 20.
- step 1337 becomes Yes, and the flow shifts to the flowchart of FIG.
- step 203 the remote control receiver 92 determines whether PGC general information. Item_Activate () is permitted or not. Since it is not permitted, return without doing anything. After returning in this way, execute the post-processing command ⁇ Link PGC # 55J To read PGC information # 55 into the PGC information buffer 31 and read V0B # 2 and V0B # 5 based on the preprocessing command. Passers-by are somewhat confused that a branch has been taken against their will, but by asking their employees, they know that this is an automated demonstration. Such automated demonstrations can fully appeal to passersby about the appeal of Travel Mook.
- the PCI user operation restriction information exists in the management information pack, and the permission or rejection of the user operation for instructing execution of trick play such as fast forward and rewind is defined in the PCI information restriction information.
- the PCI information restriction information it is possible to set whether or not to accept key interrupt processing for special playback with an accuracy of about 1.0 second for each video content.
- the PGC user operation restriction information is included in the PGC information corresponding to the playback path, and the permission / non-permission of special playback including fast forward and rewind is specified in this information. Execution can be prohibited, and fast-forwarding can be executed on a playback path that has no branches. In other words, whether or not to execute the special reproduction can be differentiated for each reproduction path, regardless of the video to be reproduced.
- a key interrupt occurs to execute special playback by the user operating the remote control
- the key is pressed.
- Whether or not to execute the special playback interrupt processing corresponding to the interrupt is determined based on the PGC user operation restriction information. If the route information of the playback path with high interactivity, such as interactively determining the branch destination, is set to reject the execution of the special playback interrupt processing, the operator does not know the playback path with high interactivity, Even if the key is pressed indiscriminately, it is possible to prohibit the activation of the key interruption processing of the special reproduction such as fast forward or rewind by the user operation restriction information.
- PGC general information Upper_Item_Select (), PGC general information. Lower— IteiD_Select (), PGC general information. Right— Item_Select (), PGC general information. Left_Itera_Select (), PGC— General information. Item-Activate () is used to individually set the permission and non-permission of force-sol movement and confirmation operation. However, PGC-General information. Upperjtem-One Select ()-PGC-General information. Item_Activate ( ), PGC general information. Item_Select_and_Activate () may be provided. This PGC general information.
- Item_Select_and_Activate expresses “0” or “1” as to whether force-sol movement and confirmation operation can be accepted or not accepted at all. In this way, the permission / non-permission of the force-sol movement and the acceptance of the definite operation may be combined and set with one bit.
- one V0B unit is composed of one G0P.
- the playback time of a moving image to be stored is about 1 second
- the present invention is not limited to one G0P, but may be two or more. It goes without saying that three G0Ps with very short playback times may be used.
- the management information pack is arranged at the head of a plurality of consecutive G0Ps, and stores effective reproduction control information for the plurality of G0Ps.
- the moving image information is described in the case of MPEG-2 digital moving image data.
- the moving image information is not limited to this as long as the moving image data can form an object together with audio and sub-pictures.
- it may be a digital video of one format or a digital video by a conversion algorithm other than DCT (Discrete Cosine Transform) used in the MPEG format.
- DCT Discrete Cosine Transform
- the management information pack is arranged for each GOP which is a unit for restoring a moving image.
- the management information pack is provided for each restoration unit of the compression method.
- a number of videotapes shot by a video camera and live music tapes are prepared as masters, and the videos and audio recorded on these are recorded digitally. And upload it to a nonlinear editing device.
- the editor creates menus and items using an application program such as a graphic editor while reproducing video and audio in frame units on the nonlinear editing device.
- a management information pack incorporating a highlight command is created using a GUI generator. After creation, these are encoded according to the MPEG standard to generate video data, audio data, sub-picture data, and management information packs.
- V0B units are created from these on the non-linear editor, and V0B is created. When V0B is created, V0B number is assigned to V0B, and PGC information # 1, # 2,
- # 3, # 4 #n create video title set section title search pointer table and video title set management information, and configure the above data structure in the memory of the workstation.
- these data are converted to logical data strings so that they can be recorded in the file area.
- the converted logical data string is recorded on a transmission medium such as a magnetic tape, and further converted into a physical data string.
- This physical data string is obtained by adding ECC (Error Check Code), E-F modulation, data in the lead-in area, data in the lead-out area, and the like to the volume data.
- ECC Error Check Code
- E-F modulation data in the lead-in area
- data in the lead-out area and the like to the volume data.
- Master cutting uses this physical data sequence to create an optical disk master. Further, an optical disc is manufactured from the master created by the press device.
- the existing CD manufacturing equipment can be used as it is, except for a part of the logical data string creating apparatus relating to the data structure of the present invention.
- This point is described in Ohm's “Compact Disc Reader,” co-authored by Heitaro Nakajima and Hiroshi Ogawa, and Asakura Shoten, “Optical Disc System,” Optical Discourse of the Japan Society of Applied Physics. Industrial applicability
- the multimedia optical disk according to the present invention is useful for distribution of interactive software for consumer AV devices by soliciting sponsors. It is useful for reducing the distribution cost by sharing it with an optical disk.
- the playback device and the playback method according to the present invention provide a security device in which the size of the mounted memory is limited. It is also useful for expensive consumer AV equipment to play back optical discs as described above.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Television Signal Processing For Recording (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX9702848A MX9702848A (es) | 1995-08-21 | 1996-08-19 | Disco optico de multimedia que permite a un desarrollador de titulos coordinar el uso de funciones especiales de reproduccion y un dispositivo de reproduccion para este disco. |
DE69604774T DE69604774T2 (de) | 1995-08-21 | 1996-08-19 | Optische mulitmedia-platte, bei der willkürlich die sicht-/abhörbetriebsart einschliesslich spezialwiedergabe kontrolliert wird sowie wiedergabevorrichtung und -verfahren dafür |
EP96927204A EP0788106B1 (en) | 1995-08-21 | 1996-08-19 | Multimedia optical disk for which producer coordinates viewing/listening mode including special reproduction at will and reproducing device and reproducing method for the disk |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP21194795 | 1995-08-21 | ||
JP7/211947 | 1995-08-21 |
Publications (1)
Publication Number | Publication Date |
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WO1997007511A1 true WO1997007511A1 (fr) | 1997-02-27 |
Family
ID=16614338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/002323 WO1997007511A1 (fr) | 1995-08-21 | 1996-08-19 | Disque optique multimedia pour lequel le producteur coordonne le mode vision/ecoute, notamment une reproduction speciale a la demande, dispositif reproducteur et procede de reproduction du disque |
Country Status (8)
Country | Link |
---|---|
US (2) | US5923627A (ja) |
EP (2) | EP0935251B1 (ja) |
KR (1) | KR100421522B1 (ja) |
CN (2) | CN1106642C (ja) |
DE (2) | DE69604774T2 (ja) |
MX (1) | MX9702848A (ja) |
TW (1) | TW384470B (ja) |
WO (1) | WO1997007511A1 (ja) |
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JP4551476B2 (ja) * | 2009-03-19 | 2010-09-29 | パイオニア株式会社 | 情報記録媒体、情報記録装置及び情報記録方法並びに情報再生装置及び情報再生方法 |
Also Published As
Publication number | Publication date |
---|---|
DE69636819T2 (de) | 2007-10-04 |
TW384470B (en) | 2000-03-11 |
DE69636819D1 (de) | 2007-02-15 |
CN1431661A (zh) | 2003-07-23 |
US6553179B1 (en) | 2003-04-22 |
EP0935251B1 (en) | 2007-01-03 |
EP0935251A3 (en) | 2004-02-04 |
CN100364009C (zh) | 2008-01-23 |
MX9702848A (es) | 1997-07-31 |
EP0935251A2 (en) | 1999-08-11 |
EP0788106A1 (en) | 1997-08-06 |
EP0788106A4 (en) | 1998-05-27 |
US5923627A (en) | 1999-07-13 |
KR100421522B1 (ko) | 2004-05-31 |
CN1106642C (zh) | 2003-04-23 |
CN1164923A (zh) | 1997-11-12 |
EP0788106B1 (en) | 1999-10-20 |
DE69604774T2 (de) | 2000-04-20 |
DE69604774D1 (de) | 1999-11-25 |
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