CN101105962B - Information storage medium with data structure for multi-angle and apparatus therefor - Google Patents
Information storage medium with data structure for multi-angle and apparatus therefor Download PDFInfo
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- CN101105962B CN101105962B CN2007101090753A CN200710109075A CN101105962B CN 101105962 B CN101105962 B CN 101105962B CN 2007101090753 A CN2007101090753 A CN 2007101090753A CN 200710109075 A CN200710109075 A CN 200710109075A CN 101105962 B CN101105962 B CN 101105962B
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Abstract
An information storage medium controls a multi-angle data reproducing apparatus by having a data structure including at least one clip for each angle, each angle clip being a data record unit of the multi-angle data for an angle. Each angle clip is divided into predetermined jumping units at jumping points and each is recorded in contiguous areas of the information storage medium. Using the clip jumping points as a link among the angle clips in which each angle clip is contiguously recorded provides efficient random access for reading the multi-angle data for angle change.
Description
The application is to be on October 13rd, 2003 applying date, and application number is 200380101470.7, is entitled as the dividing an application of patented claim of " information storage medium and equipment thereof with the data structure that is used for multi-angle ".
Technical field
The present invention relates to a kind of information storage medium and record and reproducer with the structure that is used for data of multiple angles.
Background technology
Digital multi-purpose disk (DVD) is the representative example that can write down the conventional information storage media of data of multiple angles thereon.Data of multiple angles is recorded on the DVD by using interleave method, and with this method, data are divided into scheduled unit and this unit by record alternately.
Below, video (comprise audio frequency, the decide as the case may be) data structure as the DVD of traditional multimedia storage medium is described with reference to the accompanying drawings.Fig. 1 is the diagrammatic sketch of traditional DVD data structure.With reference to Fig. 1, DVD is divided into Video Manager (VMG) zone and a plurality of video title sets (VTS) zone.Be stored in the VMG zone about video title information (that is, video title related data) and the menu information that is used for video title, and video title data is stored in a plurality of VTS zone.Usually, the VMG zone comprises two or three files, and each VTS zone comprises three to 12 files.
Fig. 2 is the data structure in traditional VMG zone.With reference to Fig. 2, the VMG zone comprises: comprise about the video manager information (VMGI) of the additional information in VMG zone zone, comprise video object set (VOBS) zone and VMGI backup zone about the object video information of video title menu.Each of VMGI zone, VOBS zone and VMGI backup zone exists as file.Yet it is optionally that the VOBS zone is included in the VMG zone, thereby the VOBS zone can not form in the VMG zone in some cases.
Each VTS zone comprises as the title data and the object video information VOBS that reproduce unit.A plurality of titles can be recorded on the VTS zone.Fig. 3 is the diagrammatic sketch of the data structure in traditional VTS zone.With reference to Fig. 3, the VOBS of Video Title Set Information (VTSI), video title menu screen, the VOBS of video title set and VTSI Backup Data are recorded in the VTS zone.For showing title menu screen, the record of video title menu screen VOBS is optional.Each video title set VOBS is divided into a plurality of object video VOB as data recording unit, and each VOB comprises the primitive (cell) of the least unit of the VOB (that is data unit) as title.Therefore, VOB or data recording unit comprise the primitive of a plurality of base units as data recording unit.
In DVD, come record-playback unit with hierarchy.Title (that is data recording) is formed on the superiors of hierarchy.Usually, title (that is the data recording of title) is linked at least one program chain (PGC).At first reproduced PGC is called inlet PGC among a plurality of PGC.Fig. 4 is that expression is linked to the title of a PGC according to traditional data of multiple angles recording method, the PGC that promptly enters the mouth, diagrammatic sketch.Fig. 5 is expression is linked to the title of a plurality of PGC according to traditional data of multiple angles recording method a diagrammatic sketch.After reproducing a PGC as shown in Figure 5, select and when reproducing one of a plurality of PGC, be used for determining the order of the PGC of selected and reproduction can be stored in DVD.The order that control is reproduced is called as navigation.Be used for determining that the order of navigation is comprised in program chain information (PGCI).
Fig. 6 is the diagrammatic sketch of the PGC when being linked to title data records according to traditional data of multiple angles record and reproducting method.With reference to Fig. 6, PGC comprises PGC information (PGCI) and comprises the video title set VOBS of title data records.PGCI comprises preceding order (pre-command), post command (post-command) and a plurality of programme information that comprises navigation command.Preceding order was performed before reproducing PGC, and post command is performed after this reproduction.Each PGCI program comprises a plurality of primitive information, and each program cell is to reproduce unit.The primitive (that is, the PGCI program cell) that is included in the program is linked to each primitive among the VOB that is included in video title set VOBS, and each VOB primitive is the unit of data recording.Each program cell is promptly reproduced unit, and the cell command (cc) that provides after it reproduces is provided.PGCI is the part as the hierarchical description of the PGC that reproduces unit, and PGC has the message structure that will be linked to as the PGCI program cell of basic reproduction unit as the VOB primitive of master data record unit.Specifically, PGC is a plurality of links as the PGCI program cell of reproducing unit.Here, but these a plurality of PGCI program cell angulation pieces (angle block).
Fig. 7 is the diagrammatic sketch of the data structure of traditional angle block gauge.With reference to Fig. 7, angle block gauge is constructed by this way, and promptly a plurality of reproduction primitive parallel arranged are so that only one of these primitives can be reproduced.The reproduction primitive of angulation piece has the identical recovery time.Each of reproduction primitive is corresponding to special angle.If as the primitive angulation piece that reproduces unit, then the data of special angle are by using interleave method and be divided into predetermined interleaved units (ILVU) and be recorded on the VOB that comprises as the primitive of data recording unit.
Fig. 8 is traditional diagrammatic sketch of wherein not using the data structure of video title set VOB that multi-angle supports and primitive.With reference to Fig. 8, VOB is by sequential storage and be recorded in the adjacent block of information storage medium, and this adjacent block is adjacent record space.Yet, as shown in FIG. 9, when using multi-angle and support, the VOB of each angle and and primitive be recorded among the ILVU on the block interleaved by using interleave method.As a result, the data of special angle are not recorded on the adjacent posting field.That is to say that usually, angle-data is sequentially recorded on the VOB that replaces by using interleave method.
More particularly, Fig. 9 is the traditional use interleave method order and the data structure of two angle-datas of record alternately.With reference to Fig. 9, each ILVU has the same reproduction time.The data volume that is recorded can be changed according to the type of the compression method that uses.Under the situation of intercrossed data,, must jump to the ILVU of hope for the data of reproducing an angle or the data of reproducing the angle that changes.For example, in order to be reproduced in the data of first angle, must detect the data that in ILVU, are used for first angle.Detect for this first angle-data, video object bit stream comprises ILVU position data (that is NXT_ILVU_SA and the NXT_ILVU_SZ in the data structure as shown in Figure 11).The indication of ILVU position data belongs to the position and the size of the next ILVU data of bit stream.After reproducing the ILVU data, use NXT_ILVU_SA and NXT_ILVU_SZ to jump to next ILVU data.
In order during data reproduction, to change angle, must jump to the position of the data of the angle that is used to change.The scope of jumping is determined in ILVU.Figure 10 is that the diagrammatic sketch that jumps to the ILVU data of the angle that is used to select in view of primitive is reproduced in expression according to traditional data of multiple angles.With reference to Figure 10, even the user sends the order that changes angle certain time during reproducing the ILVU data, view data subsequently still can not suspended ground and be reproduced to be used for seamless change.This realizes by the following method: at first finish the reproduction of ILVU data, follow link by the ILVU data that jump to the angle that is used to change, and reproduce the ILVU data of the angle that is used to change.About the information of the position of ILVU data by multiplexed and be comprised in the bit stream of the video object data that uses the interleave method record.
Figure 12 is the diagrammatic sketch (n is the natural number between 1 and 9) of data structure of the ILVU angular position information SML_AGL_Cn_DSTA that is comprised in video object bit stream of the position of traditional appointment ILVU data of being used for nine angles and size.Usually, the maximum quantity of the angle of being supported by DVD is 9.ILVU angle position data SML_AGL_Cn_DSTA provides information about the ILVU data that are used for angle #n by the link in current I LVU data.After the reproduction of current I LVU data, can current angle be changed to the angle of hope and the data of the angle that reproduction is used to wish by using ILVU angle position data SML_AGL_Cn_DSTA.
Be used for the DVD editing process that data of multiple angles is supported, the image of taking in different angles is compressed to form several bit streams with data of same reproduction length.Then, bit stream is formed by the use interleave method and information is inserted in each bit stream, and this allows during data reproduction with reference to other angles.Correspondingly, video object data is recorded in DVD upward so that angle can be changed during data reproduction.
Yet, if data of multiple angles is by using interleave method and be divided into scheduled unit and be stored among the DVD, this data of multiple angles not by continuous recording in the adjacent area of DVD.Therefore, for the successively reproducing of the data that are used for angle, usually, reproducer needs the mobile optical pickup position many times with reading of data.Specifically, if reproducer reproduces data from CD or hard disk, then this equipment spends quite a lot of time and changes optical pickup position.Also exist bit rate constraints to be offset with the time delay that compensation causes when this equipment changes optical pickup position to compression bit stream.
Summary of the invention
The invention provides a kind of information storage medium and equipment thereof, in this data structure, can carry out random access and need not consider the position of data of multiple angles with data structure.
To be partly articulated other aspect of the present invention and/or advantage in the following description, by describing, it can become clearer, perhaps can understand by implementing the present invention.
The invention provides the information storage medium that a kind of record thereon is used for the video object data of multi-angle, this medium comprises: at least one montage, it is the record unit that record is used for the video object data of each angle, wherein, at least one montage that is used for a certain angle is recorded in the adjacent area of information storage medium.
According to an aspect of the present invention, the video object data that is used for each angle comprises: a plurality of jumps are to make the video object data of different angles can be by the accessing points of successively reproducing; And additional information, comprise information about jump.
According to an aspect of the present invention, video object data comprises the clip information of conduct about the additional information of montage, and clip information comprises the information about jump.
According to an aspect of the present invention, comprise about information, and be stored in the clip information with sheet form for the starting point of each jump of montage about the additional information of each jump.
According to an aspect of the present invention, but clip information comprises the information about the entrance of random access, and is added to entry point information and specifies each entrance whether can be used as jump about the information of jump.
According to an aspect of the present invention, jointly and additionally be recorded in the montage of the video object data that is used for each angle about the additional information of jump, and be included in proper order in the common jump information about the information of the position of each jump of each montage.
According to an aspect of the present invention, distance between the position of jump and the adjacent jump can be determined, change when reproducing the position being used for jump that angle changes at the reproduction period of the montage that is used for certain angle with box lunch, montage is suspended the ground successively reproducing.
According to an aspect of the present invention, information about PlayItem and PlayList is registered as about reproducing the information of unit, and be registered as information about the PlayItem that is used for a plurality of angles about the information of a plurality of PlayItem of angulation piece, PlayItem is corresponding with each montage, and each PlayList has a plurality of PlayItem.
According to an aspect of the present invention, information about PlayItem and PlayList is registered as about reproducing the information of unit, and the information about each PlayList is recorded with corresponding with each angle, and each PlayItem and each PlayList corresponding with each montage has a plurality of PlayItem.
According to an aspect of the present invention, be added to each PlayList about the additional information of certain angle, each PlayList is used for the information of different angles and is recorded with corresponding with each angle.
According to an aspect of the present invention, but clip information comprises the information about the entrance of random access, because all entrances are jumps, so jump information is entry point information.
According to an aspect of the present invention, in the scope that does not cause buffer underflow, determine just carry out montage reproduce or jump to the entrance after do not allow to jump to the part of the montage of entrance, and definite length that does not allow this part of jumping.
According to an aspect of the present invention, clip information comprises the information about this part that does not allow to jump after just carrying out data reproduction or jumping.
The present invention also can realize by the reproducer that a kind of reproduction is recorded in the data on the information storage medium, a plurality of video object datas are that unit record is in this information storage medium with the montage as the record unit, montage is separated to be recorded in the adjacent area, when video object data is the multi-angle video object data, each montage that comprises about the information of the video object data corresponding with each angle is recorded, this equipment comprises: detecting device, detect relevant montage, and when reproducing the multi-angle video object data, read the detected relevant montage in the adjacent area of information reproduction storage medium also.
According to an aspect of the present invention, the video object data that is used for each angle has the video object data of the different angles of being used in can be by a plurality of jumps of successively reproducing, additional information about jump is recorded on the information storage medium, jump is indicated the position of the montage of being cut apart by the same reproduction time, this equipment by reproduce montage to certain jump and read and the adjacent area of information reproduction storage medium in this montage that is used for an angle, and another montage of reproducing the angle that is used to change from the jump corresponding with this certain jump when needing angle to change at this montage reproduction period is to reproduce the multi-angle video object data.
According to an aspect of the present invention, the clip information of additional information that provides about as the montage of record unit also is provided each video object data, clip information is the additional information about jump, and this equipment detects additional information about jump from the clip information about relevant montage.
According to an aspect of the present invention, comprise for the information of the starting point of each jump in the montage and with sheet form about the additional information of jump and to be stored in the clip information, when the reproduction period in montage changes angle, the jump that this equipment estimation is used for the montage of data of multiple angles is connected to each other, the additional jump information of this montage is recorded in the precalculated position in the table, the jump that is connected of the montage that this Equipment Inspection is just reproduced and the montage of the angle that is used to change, and reproduce these montages at the jump that detects respectively.
According to an aspect of the present invention, but clip information comprises the information about the entrance of random access, and the information about jump is added to entry point information to specify relevant entrance whether as jump, when angle changes, the jump that this equipment estimation is used for the montage of data of multiple angles is connected to each other, jump information is recorded in the position identical with entry point information, the jump that this Equipment Inspection connects, and in detected jump reproduction montage.
According to an aspect of the present invention, additional information about jump is that unit is included in video object data with a plurality of montages that are used for a plurality of angles jointly, and the information about the position of the jump of each montage is included in the sheet form order in the common jump information, when angle changes, this equipment reads the common jump information about the montage that is used for the data of multiple angles reproduction, detect the jump that connects based on this common jump information, and reproduce montage at detected jump.
According to an aspect of the present invention, distance between the position of each jump and the adjacent jump is determined, with box lunch when the reproduction period of the montage that is used for certain angle changes angle, montage is not suspended the ground successively reproducing, even this equipment extremely still reproduces when angle changes signal when the user imports with reproducing the immediate jump in position by the reproduction of finishing montage, and reproduces the montage of the angle that is used to change from the jump corresponding with previous jump.
According to an aspect of the present invention, information about PlayItem and PlayList is registered as about reproducing the information of unit, be registered as information about the information of a plurality of PlayItem of angulation piece about the PlayItem that is used for a plurality of angles, each PlayItem indication montage or its part, each PlayItem and each PlayList corresponding with each montage has a plurality of PlayItem, this equipment reproduces one of a plurality of PlayItem of angulation piece reproducing a plurality of PlayItem of this angle block gauge, and reproduces another PlayItem from this angle block gauge when the needs angle changes.
According to an aspect of the present invention, information about PlayItem and PlayList is registered as about reproducing the information of unit, each PlayItem indication montage or its part, each PlayList is recorded with corresponding with each angle, each PlayItem and each PlayList corresponding with each montage has a plurality of PlayItem, and this equipment reproduces and the PlayList that wishes that angle is corresponding.
According to an aspect of the present invention, each PlayList also comprises the information about respective angles, and this equipment reproduces the PlayList corresponding with respective angles.
The present invention also can realize by a kind of recording unit that the multi-angle video object data is recorded on the information storage medium that wherein can carry out random access, this equipment comprises: register, by being that unit divided video object data comes with the montage with the montage is the adjacent area that each video object data that unit will be used for each angle is recorded in information storage medium, and montage is recorded in the information storage medium and do not use interleave method.
According to an aspect of the present invention, this equipment create on the information storage medium except that the video object data that is used for each angle a plurality of jumps and about the information of these a plurality of jumps, jump is used in the video object data of different angles can be by successively reproducing.
According to an aspect of the present invention, this equipment is created the clip information that is used for montage except that video object data, and montage is that data recording unit and clip information comprise the information about jump.
According to an aspect of the present invention, jump information comprises that jump information is included in the clip information with sheet form about the information for the starting point of each jump of each montage.
According to an aspect of the present invention, but this equipment records clip information is added entry point information to indicate each entrance whether as jump to comprise about the entry point information of the point of random access and with jump information.
According to an aspect of the present invention, this equipment jointly writes down the montage that is used for data of multiple angles comprising jump information, and common jump information comprises information about the position of the jump of each montage with the sheet form order.
According to an aspect of the present invention, this equipment is determined and the position of record jump and the distance between the adjacent jump, when the montage reproduction period that is used for certain angle had been used for jump that angle changes and changes the position of reproducing, montage was reproduced continuously with box lunch.
According to an aspect of the present invention, this equipment will be recorded as about the information of PlayItem and PlayList about reproducing the information of unit, to be recorded as information about the information of a plurality of PlayItem of angulation piece about a plurality of angles, each PlayItem is corresponding with each montage, and each PlayList has a plurality of PlayItem.
According to an aspect of the present invention, this equipment will be recorded as about the information of PlayItem and PlayList about reproducing the information of unit, and write down each PlayItem with corresponding with each montage, each PlayItem and each PlayList corresponding with each montage has a plurality of PlayItem.
According to an aspect of the present invention, this equipment will add each PlayList that is recorded with corresponding with each angle to about the additional information of certain angle.
Description of drawings
By the description of embodiment being carried out below in conjunction with accompanying drawing, above and/or other aspects of the present invention and advantage will become clearer and be easier to and understand, wherein:
Fig. 1 represents the data structure of traditional DVD;
Fig. 2 represents the data structure in traditional VMG zone;
Fig. 3 represents the data structure in traditional VTS zone;
Fig. 4 represents the example as the title of inlet PGC according to traditional data of multiple angles record linkage to a PGC;
Fig. 5 represents to write down according to traditional data of multiple angles the example of the title of the PGC that comprises a plurality of links;
Fig. 6 represents traditional data structure according to traditional data of multiple angles record and the PGC that reproduces;
Fig. 7 represents the data structure of traditional angle block gauge;
Fig. 8 represent traditional when using multi-angle and observe as the VOB of record unit and the data structure of primitive;
Fig. 9 represents the angle-data that uses traditional interleave method alternately to write down;
Figure 10 represents to reproduce the data that jump to the angle that is used to select in view of primitive according to traditional data of multiple angles;
Figure 11 represents that traditional having is used for the data structure of the information that is included in video object bit stream of the interleaved units of angle #1 (ILVU) data;
Figure 12 represents the data structure of traditional information that is comprised in video object bit stream that is used for a plurality of angles;
Figure 13 is the diagrammatic sketch according to the relation of the embodiment of the invention between PlayList, PlayItem, montage (clip) information and montage;
Figure 14 is the diagrammatic sketch according to embodiment of the invention relation between jump unit and the jump in the montage of audio/video (AV) stream;
To be expression be used for the diagrammatic sketch of the angle data clip of a plurality of links that the data of multiple angles of montage reproduces according to the embodiment of the invention to Figure 15;
Figure 16 jumps and makes the multi-angle video object data can not suspended the diagrammatic sketch of the relation between the impact damper that reproduces on ground in angle data clip according to the embodiment of the invention;
Figure 17 is the diagrammatic sketch of data structure that has the PlayList of multi-angle structure according to the embodiment of the invention;
Figure 18 is the diagrammatic sketch according to the data structure of the jump of first embodiment of the invention;
Figure 19 is the diagrammatic sketch according to the data structure of the jump of second embodiment of the invention;
Figure 20 is the diagrammatic sketch according to the data structure of the jump of third embodiment of the invention;
Figure 21 is the diagrammatic sketch of example of PlayList that has the PlayItem of angulation piece according to the embodiment of the invention;
Figure 22 is the diagrammatic sketch of example that is used for the PlayList of different angles according to the embodiment of the invention;
Figure 23 has the not diagrammatic sketch of the example of the PlayList of the PlayItem of angulation piece according to the embodiment of the invention;
Figure 24 to 26 is that expression is according to the structure of the information storage medium of another embodiment of the present invention storage data of multiple angles and the diagrammatic sketch that reproduces from this information storage medium; With
Figure 27 to 31 is diagrammatic sketch of jump and jumping mode according to an exemplary embodiment of the present invention.
Embodiment
To be described in detail the embodiment of the invention now, its example shown in the accompanying drawings, wherein, identical label is represented same parts all the time.Below with reference to the accompanying drawings embodiment is described to explain the present invention.
According to embodiments of the invention, make it possible to realize the multi-angle support, so that angle-data is by using separately recording method but not interleave method is recorded on the information storage medium.In other words, the multi-angle support is implemented by the adjacent posting field that the bit stream that will be used for each angle-data is recorded in information storage medium.During data reproduction, realize that by following operation angle changes: the data that will be used for each angle are divided into jump unit (JPU), the start address of specifying JPU is as jump, and will be recorded as additional jump information about the information of the jump of each angle-data.According to an aspect of the present invention, if each entrance is each jump, then can detect jump based on information about the entrance.
In order to understand the present invention better, essential element of the present invention is listed below:
(a) about the compression of each angle and the audio/video of coding (AV) stream;
(b) comprise information about audio/video (AV) stream of coding, attribute information for example, clip information file;
(c) be used to comprise the PlayItem of the recovery time of the time IN_time of above element (a) and montage (b) and the reproducing part between the OUT_time as indication as information reproduction;
(d) comprise the PlayList of at least one PlayItem as information reproduction; With
(e) therein with the jump mapping of the position of sheet form record jump.
In the present invention, data of multiple angles is called as multi-angle object (for example, AV, video, audio frequency, other data) data of the reproduction unit that comprises that a plurality of and certain recovery time is corresponding.That is to say that data of multiple angles comprises the data (for example, under the situation of video, by the data of camera) that obtained in different angles by several reception/data collectors.Usually, voice data is created as the equal angular data in different angles, but can differently be created in different angles.In a word, usually, the many video object datas that reproduce in can distinguishing at one time are called as data of multiple angles, and many contents of reproducing in can distinguishing at one time (for example, audio frequency, other data) be called as the multi-angle content, but here for easy, all types of multidata of reproducing in can distinguishing at one time are called as data of multiple angles.
In describing the present invention, use the example of multi-angle AV data as data of multiple angles, usually, the size of video object data is very big, therefore is stored as the bit stream of compression or transmits.The present invention uses as the montage of record unit (that is data unit) with as the PlayList and the PlayItem that reproduce unit.Montage with as corresponding at the video title set VOB primitive as the record unit among traditional DVD as shown in Fig. 3 and Fig. 6, PGCI program and the PGCI primitive as the reproduction unit among the DVD is corresponding respectively with as shown in FIG. 6 for PlayList and PlayItem.
More particularly, according to the present invention, AV stream is that unit is recorded in the adjacent area of information storage medium with the montage.Usually, AV stream also is compressed and writes down to reduce the size of AV stream.When reproducing the montage of record, the characteristic of the montage of service recorder in each montage is to explain the video object data of compression.But clip characteristics or clip information comprise the Voice ﹠ Video attribute of each montage and have entrance mapping about the information of the position of the entrance of random access.Under the situation of Motion Picture Experts Group (MPEG) video compression technology, the entrance is positioned at the I picture of intraframe coding.The entrance mapping mainly is used during the schedule time after data reproduction is detected the time search of Data Position.
Figure 13 represents according to the relation of the embodiment of the invention between PlayList, PlayItem, clip information and montage.With reference to Figure 13, PlayList reproduces unit substantially.In information storage medium according to the present invention, a plurality of PlayList have been stored.A PlayList comprises one or more PlayItem.PlayItem is linked to the part of montage, more particularly, and the start and end time of the reproduction of indication in montage.Therefore, clip information is used to easily detect a part of wishing in the montage.Below, the data structure and the record position of data of multiple angles are described with reference to the accompanying drawings.
Figure 14 is the diagrammatic sketch according to embodiment of the invention relation between jump unit and the jump in montage AV stream.With reference to Figure 14, if montage representative at the video object data and the part data of multiple angles of special angle, then the montage starting point that is divided into a plurality of jumps unit and each jump unit is called as jump.Each jump represents to be used for the point of certain montage of another angle, and this point is respectively when at the reproduction period of this certain montage starting point or the point of destination when the montage that is used for different angles is jumped into or jumped back out in the montage that is used for different angles.Therefore, the montage jump is linked to another angle-data with montage.According to an aspect of the present invention, jump is the entrance.Yet for seamless data reproduction, not all entrance always is set to jump, because the entrance forms with about 0.5 second interval.
To be expression be used for the diagrammatic sketch of the angle data clip of a plurality of links that the data of multiple angles of montage reproduces according to the embodiment of the invention to Figure 15.As shown in Figure 15, suppose that a plurality of montages with equal number jump link each other, each montage is recorded in the zones of different and by the jump in the same reproduction time and links each other.For the reproduction period in montage reproduces different montages (different angle data clip), after the reproduction of arriving predetermined jump of finishing this montage and detecting the jump unit of this different montages corresponding with being somebody's turn to do predetermined jump unit, reproduce this difference montage from this corresponding jump unit, make it possible to realize seamless, the successively reproducing of montage thus.In Figure 15, for example, arrow is represented such process, wherein, the montage that is used for the third angle degree is at first partly reproduced, and selected in reproduction period first angle of the montage that is used for the third angle degree, the montage that is used for first angle is reproduced, selected in the reproduction period m of the montage that is used for first angle angle, and it is reproduced to be used for the montage of m angle.When the user imports the order that changes angle, be that unit carries out this change with the jump unit.
According to an aspect of the present invention, even when data are recorded in it in discrete zones of different of the information storage medium that can carry out random access, still can be in the given time when changing the position of reproducer from information storage medium successively reproducing data.In the present invention, the change of the position of reproducer is described to jump.Usually, jump does not need the other time in such as the volatile electronic information storage medium of storer.Yet under the situation such as the non-volatile information storage medium of the CD that comes reading of data by the mobile optical pick-up, jumping needs the other time.In addition, when the speed that reads video object data from information storage medium and the speed of reproducing the video object data read not simultaneously, be used in the adjacent area read and reproduce even data are recorded in, information storage medium still need to compensate read and reproduction speed between the equipment of difference.According to the present invention, video object buffer is used as such equipment, even be still to allow in discrete zones of different of its information storage medium that can carry out random access when data of multiple angles is recorded in it the time in the given time when changing the position of reproducer from information storage medium successively reproducing data of multiple angles, and provide to read and reproduction speed between the compensation of difference.The data that read from information storage medium are stored in the video object buffer at a predetermined velocity, and these data are reproduced from this impact damper then.During data read, the speed that control data reads is very important, with overflow or the underflow that prevents video object buffer.Even video object data is by with variable bit rate (VBR) record, the use of video object buffer still makes it possible to realize the seamless-reproduced of data.
Figure 16 jumps and makes it possible to realize not have the diagrammatic sketch of the relation between the impact damper of multi-angle rabbit of time-out in angle data clip according to the embodiment of the invention.As shown in Figure 16, the size of each jump unit (JPU) determines in the scope that the video object data that allows to be stored in video object buffer when jump to the montage of the video object data that is used for different angles is seamless-reproduced, and being reproduced in of next one jump unit that is used for these different angles buffer underflow takes place begun before.As shown in Figure 14, obtain JPU by cutting apart angle data clip.Jump in the other time of needs under the situation of reproducer of the jump that is used for different angles, the size of jump unit is determined by following condition, suppose that the longest hopping time is T_JUMP, the speed of reading of data is V_R, and the speed of reproduction video object data is V_O:
Jump cell size＞V_R*V_O*T_JUMP/ (V_R-V_O) ... (1)
In addition, usually, below the size of video object buffer satisfies:
Buffer sizes (B)＞V_O*T_JUMP ... (2)
Figure 17 is the diagrammatic sketch of data structure that has the PlayList of multi-angle structure according to the embodiment of the invention.The PlayList of Figure 17 comprises a plurality of PlayItem with sequential organization and the angle block gauge PlayItem with multi-angle structure.Angle block gauge PlayItem comprises a plurality of PlayItems corresponding with a plurality of each angle data clip.Under the situation of angle block gauge PlayItem, when reproducing PlayList, only one of them PlayItem is reproduced.In addition, at the reproduction period of angle block gauge PlayItem, the PlayItem by the angle that select to change from angle block gauge PlayItem also reproduces the PlayItem that selects and can carry out angle and change.Usually, form the recovery time that the PlayItem of angle block gauge has equal length.More particularly, in Figure 17, by the montage 2 to 4 of each PlayItem appointment of angle block gauge PlayItem by staggered but be recorded in the adjacent area.In other words, montage 2 to 4 respectively be recorded in the posting field by the identical mode of the montage (that is montage 1 and 5) of the PlayItem appointment that does not belong to angle block gauge PlayItem.Yet montage 2 to 4 comprises jump information.
Below, three types jump data structure is described in the clip information with reference to the accompanying drawings.Figure 18 is the diagrammatic sketch of data structure that is used for the montage jump of angle according to first embodiment of the invention.With reference to Figure 18, clip information also comprises the jump mapping except that the general information of PGC or mpeg standard and entrance mapping.The jump information and the video object data that are included in the jump mapping are closely related.Therefore, jump information is included in the clip information data and additional information about montage is provided.
In Figure 18, the general information of clip information comprises following information:
-version_number: the version of clip information file.
-EPMap_start_address: the start address of the entrance mapping that the byte number that is begun by the first byte from clip information file is indicated.
-JPMap_start_address: the start address of the jump mapping that the byte number that is begun by the first byte from clip information file is indicated.If the value of JPMap_start_address is 0, this means that then the montage relevant with clip information file is not to be used for angle-data and this montage not comprise information about the jump mapping.
-ClipInfo: the attribute of the AV stream file relevant with clip information file.
In Figure 18, but the entrance of clip information mapping comprises about the time of the entrance of random access and the information of position.The mapping of the jump of clip information comprises the information of jump that angle data clip can be operatively coupled to the montage of different angles by it.According to an aspect of the present invention, be included in the quantity of the jump manager information indication jump in the jump mapping and follow the quantity of the jump data entries after the jump manager information.Jump information is used to detect the position of each jump and the starting position in the related angle data edit.According to an aspect of the present invention, jump information is represented with byte or some sectors.In addition, if video object data is encoded as mpeg transport stream, then according to an aspect of the present invention, each jump information is with some MPEG-TS grouping expressions.
Figure 19 is the diagrammatic sketch of data structure that is used for the montage jump of angle according to second embodiment of the invention.The data structure of the jump of Figure 19 represents to comprise the entrance mapping of jump information.Therefore, the advantage of the data structure of Figure 19 is that it stores jump information without any need for other space.As mentioned above, when video object data was encoded by using time-space compression such as MPEG, jump should be set to the entrance as the random access entrance.By will whether being incorporated into the entrance mapping as the information of jump about the entrance, jump information is by record easily.
Figure 20 is the diagrammatic sketch of data structure that is used for the montage jump of angle according to third embodiment of the invention.In Figure 20, comprise the jump information of the montage (seeing Figure 17) of angulation piece.This jump map information structure is the data structure of separating with the clip information structure.The jump map information comprises: jump manager information, the quantity and the quantity that is present in the jump in the montage of the montage of indication angulation piece; With the jump information of each montage, order is followed after the jump manager information.The jump map information structure makes it possible to easily to detect the position of the angle of hope.
Figure 21 is the diagrammatic sketch of example of PlayList that has the PlayItem of angulation piece according to the embodiment of the invention.With reference to Figure 21, each PlayItem information comprises general PlayItem information and angle block gauge information.The angle block gauge information spinner will be specified whether angulation piece PlayItem of PlayItem.Usually, the PlayItem of angulation piece is by journal.At the reproduction period of PlayList, at least one is reproduced from the PlayItem that the PlayItem of angulation piece selects.The reproduction period of a PlayItem in angle block gauge PlayItem, another PlayItem that forms this angle block gauge can be reproduced.
Figure 22 is the diagrammatic sketch of the example of the conduct that the is used for different angles PlayList that reproduces unit.With reference to Figure 22, each PlayList comprises the single PlayItem of angulation piece not or is used for a plurality of PlayItem of single angle.That is to say that each PlayList is corresponding to an angle.Figure 23 has the not diagrammatic sketch of the example of the PlayList of the PlayItem of angulation piece (that is, PlayList comprises single PlayItem) according to the embodiment of the invention.As shown in Figure 23, each PlayList comprises the angle block gauge information about angle, and in this case, its indication PlayItem information is the angulation piece not.When user's selected angle or change angle, relevant/respective angles PlayList is reproduced.
According to the present invention, the data recording unit that forms data of multiple angles is recorded in the adjacent area of information storage medium.Be inserted in record in the unit jump and record unit's interface of different angles, and be stored as additional information (that is, clip characteristics or clip information) about the information of jump.Then, the information about the reproduction unit corresponding with the record unit is stored as multi-angle information (that is, PlayList and PlayItem).
According to reproducer multi-angle data reproducing of the present invention and have following advantage:
The first, if when angle-data is just reproduced and angle be changed, then the data of multiple angles data that can be read by the adjacent area from information storage medium and read can be by successively reproducing.That is to say that data of multiple angles is used for the same procedure of non-data of multiple angles coding is encoded by use.Therefore, opposite with interleave method, do not need additional data and encoding operation to come successively reproducing to be used for the data of angle.
The second, comprise the jump information that makes it possible to be connected to the video object data that is used for another angle as the montage of writing down unit.Change angle when being used for the video object data of current angle in reproduction, the reproducer reproduction is used for the video object data of current angle to next jump, reproduces the video object data of the angle that is used to change then from the jump corresponding with next jump.
The 3rd, when multi-angle information by with the angulation piece and belong to PlayList (referring to Figure 17 and Figure 21) when reproducing a plurality of PlayItem record of unit, for the reproduction period at a PlayItem of angle block gauge changes angle, reproducer reproduce PlayItem to the immediate jump in current reproduction position of montage, the montage of reproducing the angle that is used to change then from this jump.If be recorded for the single PlayList of each angle as shown in Figure 22, want when the reproduction period of PlayList changes angle that then the PlayList of the angle that is used to change is detected and reproduce as the user.
Recording unit according to the present invention is recorded as montage with data of multiple angles on information storage medium, comprise the clip information about jump, and record linkage is to the reproduction unit record of data recording.Determine size (referring to equation (1) and (2)) according to the recording unit of the embodiment of the invention based on the maximum bit rate V_O of reading speed V_R, the hopping time T_JUMP of reproducer and video object data as the jump unit of the part of the montage of cutting apart.
Then, the jump cell size of Que Dinging is converted into the recovery time.Then, video object data is encoded so that random access (inlet) point is set to larger than this recovery time or identical with this recovery time.Here, usually, be jump to the interface of video object data.Usually, random access point is that under the situation of MPEG, jump is set to the entrance such as the starting point of group of picture (GOP) in the time-space compressed encoding of MPEG.Therefore, with MPEG, each jump unit comprises a plurality of GOP.In addition, usually, jump is formed on the same reproduction time of each video object data in the district.
For each angle, the video object data of coding is recorded in the adjacent area of information storage medium.Information about the position of jump is registered as additional information.According to embodiments of the invention, can be registered as clip information about the information of the jump of each montage, clip characteristics is provided thus.
Then, the information about the reproduction unit that forms data of multiple angles is created and is recorded.For example, the PlayList that comprises the PlayItem corresponding with each montage of multi-angle is formed by PlayItem being linked each other (that is angle block gauge PlayItem).On the other hand, single PlayList can be corresponding with single angle.
Figure 24 to 26 is that expression is according to the structure of the information storage medium of another embodiment of the present invention storage data of multiple angles and the diagrammatic sketch that reproduces from this information storage medium.According to an aspect of the present invention, information storage medium has such data structure, that is, the video object data that is used for multi-angle therein is unit record with the montage and is set to jump in all entrances that montage forms.
When the user wants when the reproduction period of the montage that is used for an angle changes angle, reproducer according to the present invention reproduce this montage to the entrance of the immediate montage in current reproduction position, jump to the entrance of the montage of the angle that be used to change corresponding, and after the entrance of the montage of this angle that is used to change, reproduce the montage of the angle that is used to change with the entrance of the montage of reproducing.Here, usually, all entrances that are used for all angles are formed in the montage in district of identical time.In other words, as shown in Figure 24, each the video angle object data that is recorded in the adjacent and different zones with physics mode logically links each other by each entrance.
Usually, as shown in Figure 25, entrance EP has the record unit of the recovery time between 0.5 second and 1 second and also is formed on the position that can carry out random access.When the multi-angle video object data was used the MPEG compression, video object data comprised a plurality of GOP.For the entrance of during angle changes, using the video object data that comprises a plurality of GOP as jump, need all images among the GOP to form by the sealing GOP (closed GOP) that only uses the picture coding among the relevant GOP.
All entrances are in the recording medium data structure of jump therein, need be about the additional information of jump.Yet, in this data structure, when reproducer jumps to the entrance with the change angle, may cause the underflow of playback buffer device.Therefore, according to an aspect of the present invention, in order to prevent that reproducer from during jumping or jump to the entrance of the definite part of information storage medium after just jumping, as shown in Figure 25, providing no jump part.The part that does not allow to jump is called as no skipped blocks (NJB).
With reference to Figure 26, when being included in data volume in the impact damper when the data reproduction that just carries out reproducer or after jumping, do not allow angle to change less than data volume B.Here, data volume B is the minimum that allows the seamless-reproduced data volume of the image of hopping time JUMP_T.When the reconstruction of image was continuous when surpassing NJB length, the data volume in impact damper always was allowed in all entrances greater than data volume B and jump.
The length of NJB can use the same procedure of the length of calculating JPU to calculate.More particularly, suppose that the longest hopping time is T_JUMP, the speed of reading of data is V_R, and the speed of reproducing video object data is V_O, and the length of calculating NJB is as follows:
NJB length＞V_R*V_O*T_JUMP/ (V_R-V_O) ... (3)
In addition, usually, the size of impact damper is determined below satisfying:
Buffer sizes (B)＞V_O*T_JUMP ... (4)
Utilizability on the industry
As mentioned above, according to the present invention, the video object data that is used for data of multiple angles is divided into scheduled unit (that is, montage and jump unit thereof) and is recorded in the adjacent area of information storage medium and does not use interleave method.More particularly, if " montage " of the present invention is corresponding to data recording unit with prior art VOB, then in the present invention, under the situation of data of multiple angles, " montage " is recorded in the adjacent area on the storage medium.With the present invention contrast, in the prior art, under the situation of data of multiple angles, the primitive of VOB is recorded according to interleave method, perhaps, for example, under the situation of two angles as shown in Figure 9, is recorded on the graded area of storage medium.Correspondingly, in the present invention, the planning of data area is easy to by optical recording and reproducer control and management, and random access is easy to carry out, thus, record/read data of multiple angles (that is, than traditional data of multiple angles record/read the optical pickup position of lacking to move) and expand traditional bit rate constraints effectively to compression bit stream.
Above-mentioned data of multiple angles record of the present invention and the reproduction processes that is included in data of multiple angles register/reproduction is implemented by using software and/or computing hardware.For example, processing of the present invention may be embodied in the detecting device and reconstructor and processor of data of multiple angles reconstructor, this processor be programmed with will from the reception of any Source Type/the data of multiple angles multi-angle data according to the present invention of input is recorded on the information storage medium.More particularly, information storage medium comprises that by having at least one data structure that is used for the clip object of each angle controls the data of multiple angles reproducer, and each montage is the data recording unit that is used for the data of multiple angles of angle.Each angle clip is divided into predetermined jump unit at predetermined jump, and each is recorded in the adjacent area of information storage medium.Use the montage jump to read the data of multiple angles that is used for the angle change effective random access is provided as being linked as between the angle clip of adjacent record.Therefore, the invention provides a kind of information storage medium recording unit, comprise: the computer processor of programming, data of multiple angles is divided into each predetermined angular unit (each angle-unit comprises two or more at least data primitives) with the jump appointment, this jump is used to link the predetermined angle-unit of this data of multiple angles, and this computer processor will comprise that each predetermined angular unit record of jump is in the adjacent area of information storage medium.
Though represented and described some embodiments of the present invention, it should be appreciated by those skilled in the art that under the situation that does not break away from principle of the present invention that its scope limits by claim and equivalent thereof and spirit, can make amendment to these embodiment.
Claims (2)
1. this method of method from the data of the motion picture of information storage medium reproduction and the corresponding different angles of motion picture comprises:
Read and the corresponding montage AV stream of the moving picture data of different angles from information storage medium, described montage AV stream is interlaced with one another;
Reproduce and the corresponding AV stream of clip information, wherein, each clip information includes the stomion mapping, whether the mapping of described entrance comprises about the information of corresponding one entrance in the montage AV stream of random access and is the information of angle change points about each of entrance, wherein, angle change points is the point from an angle to another angle reproduction of moving picture.
2. the positional information that the method for claim 1, wherein comprises the entrance in the AV stream about the information of entrance.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020062882A KR20040033663A (en) | 2002-10-14 | 2002-10-15 | Information storage medium having data structure for multi-angle and apparatus therefor |
| KR1020020062882 | 2002-10-15 | ||
| KR10-2002-0062882 | 2002-10-15 | ||
| US45255103P | 2003-03-07 | 2003-03-07 | |
| US60/452,551 | 2003-03-07 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003801014707A Division CN100498958C (en) | 2002-10-15 | 2003-10-13 | Information storage medium with data structure for multi-angle and apparatus therefor |
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| Publication Number | Publication Date |
|---|---|
| CN101105962A CN101105962A (en) | 2008-01-16 |
| CN101105962B true CN101105962B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003801014707A Expired - Lifetime CN100498958C (en) | 2002-10-15 | 2003-10-13 | Information storage medium with data structure for multi-angle and apparatus therefor |
| CN2007101090753A Expired - Lifetime CN101105962B (en) | 2002-10-15 | 2003-10-13 | Information storage medium with data structure for multi-angle and apparatus therefor |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003801014707A Expired - Lifetime CN100498958C (en) | 2002-10-15 | 2003-10-13 | Information storage medium with data structure for multi-angle and apparatus therefor |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197572A (en) * | 1995-09-29 | 1998-10-28 | 松下电器产业株式会社 | Method and device for recording and reproducing interleaved bit stream on and from medium |
-
2003
- 2003-10-13 CN CNB2003801014707A patent/CN100498958C/en not_active Expired - Lifetime
- 2003-10-13 CN CN2007101090753A patent/CN101105962B/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197572A (en) * | 1995-09-29 | 1998-10-28 | 松下电器产业株式会社 | Method and device for recording and reproducing interleaved bit stream on and from medium |
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| CN101105962A (en) | 2008-01-16 |
| CN100498958C (en) | 2009-06-10 |
| CN1717734A (en) | 2006-01-04 |
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