CN1967700A - Optical disk and method of playback - Google Patents
Optical disk and method of playback Download PDFInfo
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- CN1967700A CN1967700A CNA2006101014168A CN200610101416A CN1967700A CN 1967700 A CN1967700 A CN 1967700A CN A2006101014168 A CNA2006101014168 A CN A2006101014168A CN 200610101416 A CN200610101416 A CN 200610101416A CN 1967700 A CN1967700 A CN 1967700A
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Abstract
In an optical disk storing digital image information in the form of a succession of blocks, each comprising a plurality of frames comprising I-. P- and B-pictures, wherein an address format is preformatted in front of the block of image information of said plurality of frames, and the data arrangement within each image information blocks is such that I- and P-pictures are collectively disposed. The position of the I-pictures within each block is shifted from one block to another. The I-picture data may be divided into fraction according to the position on the screen, the DCT frequency, or layering, and the fractional I-picture data may be arranged in the image information blocks.
Description
The application be the applying date be submit on June 23 nineteen ninety-five, division day be that September 4, application number in 2003 are 03157984.1, denomination of invention divides an application for the application for a patent for invention of " CD and play the method for CD ".
Technical field
The present invention relates to the method for a kind of CD and broadcast CD.
Background technology
Figure 29 is the block scheme that is illustrated in disclosed conventional disk recording/playing device among the Jap.P. JP-114369/1992.The word information of A/D converter/vision signal, sound signal or suchlike conversion of signals are become.Information compressor 2 is used to compress the output of A/D converter 1.Frame width of cloth conversion equipment 3 converts compressed information to width of cloth district information that duration is a frame display cycle multiple.Scrambler 4 is encoded the output of frame width of cloth conversion equipment 3.Thereby modulator 5 is modulated into predetermined modulation code with the output of scrambler 4 reduces interference between the number on the recording medium.Laser driver 6 is modulated laser according to modulation code.Laser output switch 7 is driven the electric current of launching the laser instrument of laser in order to being used in the change input optical head 8 by laser driver 6.
Actuator 9 is used to follow the tracks of the emitted laser bundle.Traversing or feed motor 10 flying optical head 8 that is used for making progress in the footpath of CD 12, said CD can be by magnetooptic recording or commutation recording mode recorded information.
Figure 30 has represented the data ordering structure (layer structure) in the moving image coding expert system (MPEG) briefly, this system in the compression transmission of digital mobile image information and storage direction just in standardization.In this figure, label 21 expression one group of pictures (hereinafter referred to as " GoPs "), this group of pictures is made of many frame informations, the GoP layer that 22 expressions are formed by some pictures (screen), the stick that 23 expressions form each width of cloth picture segmentation, the bar layer that 24 expressions are formed by several macro blocks, 25 expression macroblock layer, the piece layer that 26 expressions, 8 * 8 pixels form.
Macroblock layer 25 is one that is made of 8 * 8 pixels, and this is the least unit of encoding in the mpeg system, and discrete cosine transform (below be referred to as " DCT ") is promptly carried out as a unit with each piece.Four adjacent Y-signal pieces and on the position with four a Cb piece and Cr pieces that the Y-signal piece is corresponding, promptly six pieces form a macro block altogether.Several macro blocks constitute one.Macro block is the least unit of compensation moving projection, and the mobile vector of compensation moving projection is that unit determines with each macro block.
Figure 31 represents to constitute a coding structure under the GOP situation by 17 pictures.In this figure, the I-picture of the image information formation of interior frame discrete cosine transform has been carried out in 27 expressions, 29 expressions have been carried out moving the P-picture that the picture information of discrete cosine transform coding forms to precompensation with I-picture or other P-picture (promptly except it being carried out move to precompensation the offscreen P-picture of P-of discrete cosine transform coding), and 28 expressions are with preceding or at afterwards the I-picture of position and/or the P-picture has carried out compensating mobile discrete cosine transform coding as the reference picture B-picture.
Coding structure when the coding structure when Figure 32 has schematically shown and formed a GOP by 10 pictures, Figure 33 represent to form a GOP by 15 pictures.
In these accompanying drawings, P-, B-and I-picture are expressed as " P " or P-picture respectively ", " B " or " B-picture " and " I " or " I-picture ".
Below with reference to its function mode of these description of drawings.Utilize the digital image information compress technique, can realize the imagery pack system now, the use of this system is very easily, by compressed information being recorded on the CD than retrieving much easier on VIR with tape.Because what this CD archives economy was handled is numerical information, can not cause quality to descend owing to recording, because the employing optical means is recorded and reproduced, directly do not contact CD, in addition so the reliability height.
In routine techniques, be to adopt disk recording device shown in Figure 29 to record the digital compression mobile message of the mpeg system shown in Figure 30.In information compressor 2, be converted into standard compression picture system by A/D converter 1 digitized picture information, as the information of mpeg system.Compressed information is encoded and modulates, thereby has reduced the interference effect between the number on the CD.Be recorded in then on the CD 12.Basic identical by the data volume that makes each GOP, and information is divided into duration is the plurality of sections that frame shows the time multiple, can be that a unit edits work such as processing with each GOP just.
In play operation, the pictorial data of reproducing from CD 12 is played amplifier 13 and amplifies, and change back numerical data by detuner 14 and demoder, the pure original image data that has removed address and parity informa-tion then can be stored in the frame width of cloth inverter 16 again.In addition, by carry out, for example mpeg decode, picture intelligence is deposited in the information expanding unit 17, converts thereof into simulating signal with D/A converter 18 then, thereby can show in monitor or this type of device.
If adopt mpeg system as above-mentioned digital mobile compression method, then coding structure comprise one or more adopt in the P-picture 29 that constitutes of the picture information that obtains by the discrete cosine transform coding of forward direction motion compensation in addition of the compression I-picture 27, one or more of frame discrete cosine transform, with utilize on time shaft, be positioned at before it and after I-picture and/or P-picture give motion compensation as the reference picture and carry out the one or more B-picture 28 that discrete cosine transform coding obtains, as Figure 31 to shown in Figure 33.
Because the I-picture obtains by interior frame discrete cosine transform, so picture reproducing independently.And on the other hand because the P-picture is to obtain by the forward direction motion compensation, so can not picture reproducing before the I-picture reproduction.Because the B-picture obtains from the both sides prediction, so I-and/or P-picture must be earlier reproduced before the B-picture.Because the B-picture is from both direction prediction, thus use the B-picture, data volume minimum and encode most effective.
Because the B-picture can not independently reproduce, and need an I-or P-picture, so if the quantity of B-picture increases, then the capacity of buffer register must strengthen, and it is elongated to be input to the time delay that image plays from data.For a kind of storage medium, such as CD, needing can non-volatile recording and be the coding method that high compression rate is arranged, and the delay that image is play is not the problem place.So Figure 31 is suitable to coded system shown in Figure 33.
Let us considers how to carry out picture retrieval and broadcast fast with above-mentioned coding structure from the video disc recording data now.If coding structure is as shown in figure 33, and if take passages the I-picture and play, then can play fast.In this case, when having reproduced an I-picture, the magnetic track that then jumps enters the GOP of the next one or front, reproduces I-picture wherein.By repeating such operation, just can realize playing fast or reverse-play.Make a leapleap forward speed limit in Figure 33 under the situation 15 of speed times of picture, among Figure 32 under the situation 10 of speed times.
In the picture retrieval process of reality, if speed is too high, then human eye is positioned at recognition image.For preliminary identification, retrieve fast with 10 times or high slightly speed and to suit, but for after preliminary search to the retrieval of details, then only need under several times of speed, play fast or reverse-play.So needing can be in very wide velocity range, promptly tens times to several times from normal speed carry out special broadcast, to realize effective picture retrieval.Under the situation of the packed data that uses mpeg system,, then be positioned at P-picture B-picture before and also will read, so be difficult to realize 4 to 8 times speed if attempt to reproduce the P-picture to the coding structure among Figure 33 with Figure 31.
Because traditional player method reproduces the coding structure of CD itself, specifically broadcast can only be realized by the I-picture, and can only be to carry out fast and reverse-play with the corresponding speed of frame number that comprises in a GOP or a plurality of GOP.
And, the record format of the digital image of employing shown in the prior art example, the I-picture, P-picture and B-picture are arranged along time sequencing, thereby make special broadcast be confined to following method.
Particularly, the basic skills that is used in the prior art in the system's speical play that writes down the digital mobile picture image is to utilize the information in the toc region territory that is recorded in week in the CD to carry out speical play.In this case, be leading address (scene changes the address of picture record position afterwards) according to the scene conversion or the leading address that is recorded in the image file of toc region, read the digital mobile picture image of the I-picture that is stored in this address, reproduce them then and realize speical play.
In so a kind of method from the operation of reading of data the CD shown in the process flow diagram among Figure 34.This flowcharting in the moving image picture information in being recorded in toc region basis, the anterior address of scene carry out the situation of speical play.For the first time transfer to toc region, the scene leading address deposits in the internal storage, transfers to address stored then, so the I-picture among the GOP that has been transformed into is reproduced and demonstration, arrives next address afterwards and shifts termination.Repeat this a series of processes.
But in this way, need storage a large amount of answer search address (promptly specifying the address of transferring on it), must rewrite TOC information when writing down at every turn.
In addition, in the speical play process, in order to reproduce the P-picture B-picture data that must jump, but successively with the I-picture, B-picture and P-picture are recorded in the situation on the CD, when carrying out the magnetic track transfer, must wait in a period of time before reproducing the P-picture.
In addition, be greater than the data volume of P-or B-picture, so can not realize the ultrafast broadcast of tens times of speed because the time of played data is not enough by the I-picture data amount of interior frame discrete cosine transform coding.
When the optional position from CD began to retrieve a GOP who wants, then search operaqtion must guiding place (herein write down timing code or visual address) of repeated several times to find each GOP.
And, shift one's position when not knowing when the scene of moving image picture information, can't pursue the scape retrieval.
In addition, because only read a part of data among each GOP in the speical play process, what image was play may be incomplete, or may only on a part of screen image be arranged.
Summary of the invention
An object of the present invention is to increase speical play speed.
Another object of the present invention is to reduce to carry out the required rotation waiting time of magnetic track transfer.
A further object of the present invention is can successively reproducing I-picture.
Another purpose of the present invention is to reduce the memory span that is used to store image in playing image process.
Another purpose of the present invention is the location facility that makes each GOP beginning position.
Another purpose of the present invention is can be by specifying the broadcast mode recorded information.
According to an aspect of the present invention, a kind of CD is provided, it is with the form recording digital picture information of a series of image information blocks, said each message block comprises the data of the I-picture of the I-picture that is obtained by interior frame discrete cosine transform coding, the P-picture data of the one or more P-pictures that obtain by the discrete cosine transform coding that has the forward direction motion compensation and utilize the I-that is positioned at the front and back and the B-picture data of the B-picture that the P-picture data obtains through the motion compensation discrete cosine transform coding as the reference picture.
Wherein be pre-formed an address format in a said framing image information block front, the data ordering form in each image information block is that I-and P-picture are concentrated setting.
Because I-and P-picture is to concentrate to arrange, just I-in each GOP and P-picture data are continuously arranged, so in the normal play process, they are read successively, deposit buffer register in, B-picture data and decoding are read in decoding then after this, with the pictorial data among the storage GOP.The capacity of buffer register can reduce.In the process of speical play, have only the I-picture data to be read out and decode, jump and can carry out magnetic track in the data part that records P-or B-picture.In the special playback process, can ignore the time that is used to reproduce P-and B-picture data, thereby can increase speical play speed.
Can arrange like this, parity signal that will be used to discern or pilot signal are recorded in the beginning part of I-picture data.
Adopt said structure, just can easily carry out the position sensing and the difference of I-and P-picture data in the playing process fast, and common successively reproducing I-picture data, and need not be at the control data that carries out reproducing when magnetic track jumps the GOP the beginning part.
Can arrange like this, make I-in each image information block and P-picture to put in order for an image information block be different with another image information block.
I-picture in each image information block and P-picture data put in order for image information block scheme different with another image information block can by the height exchange in adjacent image information block I-and the position of the data of P-picture implement.Adopt such scheme, the rotation waiting time in the time of can reducing the magnetic track jump.
Can arrange like this, make I-and the arrangement adjacent one another are of P-picture data in each image information block, and I-, P-and B-picture data to put in order for an image information block be different with another image information block.
Putting in order of I-, P-and B-picture data can be implemented by exchanging I-, P-in the adjacent image information block and the position of B-picture for image information block scheme different with another image information block.Adopt such scheme, the rotation time to be treated in the time of can further reducing the magnetic track jump.
Can arrange like this, CD is divided into several region with radius separately, sweep trace speed in same district not equates basically, the beginning part at each image information block is pre-formed address date or vectoring information, the data bits of each image data block is consistent for all image information blocks, and the data recording bit length of image information block is the multiple of magnetic track circumferential length on the CD in each width of cloth.
The data recording bit length of image information block is that the implication of the multiple of magnetic track circumferential length on the CD is that the recording capacity of each image information block (GOP) is multiple of each circle recording capacity in each width of cloth.Adopt such scheme,, can both discern GOP beginning position easily no matter the variation of linear velocity can be limited in where being scanned of the interior CD of certain scope.
Can arrange like this, be used for the minute surface part that track skew is surveyed for each image information block is provided with one.
Adopt said structure, just can discern GOP beginning position by reference minute surface part, and the length by the minute surface part be set to different with other parts, just can from optical head with signal discern GOP and start the position, and need not reproduce data.
According to another aspect of the present invention, a kind of CD with a series of image information block form recording digital picture information is provided, said each message block comprises the I-picture data of the I-picture that obtains by interior frame discrete cosine transform coding, the P-picture data of the one or more P-pictures that obtain by the discrete cosine transform coding that has carried out the forward direction motion compensation and utilize the I-that is positioned at its front and back and/or the P-picture carries out the B-picture data of the B-picture that motion compensation discrete cosine ratio changing coding obtains as the reference picture.
Wherein being pre-formed the straight line that radially extends at the anterior address date of each image information block (or image file) arranges.
Adopt said structure,, thereby can limit the starting point that magnetic track jumps no matter the luminous point trace where, can both be discerned the beginning position of each GOP.
According to another aspect of the present invention, a kind of CD of the form recording digital picture information with a series of image information blocks is provided, said each image information block comprises the I-picture data of the I-picture that is obtained by interior frame discrete cosine transform coding, the P-picture data of one or more P-picture that obtains by the discrete cosine transform coding that has carried out the forward direction motion compensation and utilize the I-picture that is positioned at its front or back and/or the data of P-picture are carried out the B-picture data of the B-picture that the motion compensation discrete cosine transform coding obtains as the reference picture.
Wherein write down the jump termination address that is used for speical play in the attribute data district of each image information block beginning.
Adopt said structure, can carry out speical play with any different pattern according to the content of moving image, the mode of speical play can be specified when record, and, have only the beginning part of moving image scene to be play fully or continuously in the time of just can being implemented in speical play by utilizing above-mentioned information duplicate record groove to jump.
According to a further aspect of the invention, a kind of CD of the form recording digital picture information with a series of image information blocks is provided, said each image information block comprises the I-picture data of the I-picture that is obtained by interior frame discrete cosine transform coding, the P-picture data of one or more P-picture that obtains by the discrete cosine transform coding that has carried out the forward direction motion compensation and utilize the I-picture that is positioned at its front or back and/or the data of P-picture are carried out the B-picture data of the B-picture that the motion compensation discrete cosine transform coding obtains as the reference picture.
Wherein having write down instantaneous variation according to the brightness of image or chrominance information in the attribute data recording areas of each image information block beginning detects and has/data of no scene conversion.
Adopt said structure, can be positioned at after the scene conversion just or before still frame carries out picture retrieval by reproducing continuously, and can promptly edit with each scape (separating) as a unit by the scene conversion by scape ground.
According to a further aspect of the invention, the method of a kind of broadcast with the CD of the form recording digital picture information of a series of image information blocks is provided, said each image information block comprises the I-picture data of the I-picture that is obtained by interior frame discrete cosine transform coding, the P-picture data of one or more P-picture that obtains by the discrete cosine transform coding that has carried out the forward direction motion compensation and utilize the I-picture that is positioned at its front or back and/or the data of P-picture move the B-picture data that quilt is repaid the B-picture that discrete cosine transform coding obtains as the reference picture.
Said method may further comprise the steps:
Use an optical head, said optical head comprises that one is used to make coarse adjustment actuator that optical head arrives the position that requires and one to be used to make optical head to jump to fine actuator at the track of the inside circumference of CD or neighboring;
By according to the retrieval of the parity signal in the image information block on the CD or pilot signal with confirm to play the I-picture data;
Reproduce the I-picture data in the next image information block;
Repeat aforesaid operations to play fast or reverse-play.
Utilize said method, can be by the I-picture that reproduces each GOP according to the parity or the jump of pilot signal duplicate record groove of each I-picture beginning.
According to a further aspect of the invention, the method of a kind of broadcast with the CD of the form recording digital picture information of a series of image information blocks is provided, said each image information block comprises the I-picture data of the I-picture that is obtained by interior frame discrete cosine transform coding, the P-picture data of obtain by the discrete cosine transform coding that has carried out the forward direction motion compensation one or a plurality of P-pictures of many persons and utilize the I-picture that is positioned at its front or back and/or the data of P-picture are carried out the B-picture data of the B-picture that the motion compensation discrete cosine transform coding obtains as the reference picture.
Said method may further comprise the steps:
Use an optical head, said optical head comprises that one is used to make coarse adjustment actuator that optical head arrives the position that requires and one to be used to make optics to jump to fine actuator at the inside circumference or the track on the neighboring of CD;
By according to the retrieval of the parity signal in the image information block on the CD or pilot signal with confirm to play the I-picture data;
Play the P-picture data of one group of P-picture then continuously;
Carrying out track jumps;
Reproduce the I-picture data in the next image information block;
Play the P-picture data of one group of P-picture then continuously;
Repeat aforesaid operations to play fast or reverse-play.
Adopt said method, can improve broadcasting speed.
According to a further aspect of the invention, provide a kind of method of playing CD, the rotational speed the when rotational speed of wherein said CD in the quick or reverse-play process of moving image image is higher than CD in normal play.
By this method, improved data transfer rate.
According to a further aspect of the invention, a kind of method of playing CD is provided, wherein be not recorded in the moving image image fast or need the zone of the data that are read out in the reverse-play process, the rotational speed of said CD improves, and in the zone that records I-or P-picture data, said rotational speed is reduced to the linear velocity that can reproduce data.
Utilize said method, total broadcasting speed has improved.Can also need not utilize track to jump and just can realize that the moving image image has smoothly speical play fast.
According to a further aspect of the invention, a kind of CD of the form recording digital picture information with a series of image information blocks is provided, said each image information block comprises the I-picture data of the I-picture that is obtained by interior frame discrete cosine transform coding, the P-picture data of one or more P-picture that obtains by the discrete cosine transform coding that has carried out the forward direction motion compensation and utilize the I-picture that is positioned at its front or back and/or the data of P-picture are carried out the B-picture data of the B-picture that the motion compensation discrete cosine transform coding obtains as the reference picture.
Wherein the some districts that are divided into respect to display screen are divided into the I-of branch picture data with said I-picture data, and branch's I-picture data is arranged in the said image information block, and in record guiding of the front portion of each I-of branch picture data or parity signal.
Also can also arrange like this, make the I-of branch picture data difference in the adjacent image information block of adjacent record track.
By said structure,, can reproduce the whole screen I-of branch picture data continuously by the pilot signal or the parity signal of search records in the whole screen I-of branch picture data front portion.
Guiding or parity signal are recorded in respect to each zone of display screen and the I-picture data are divided the Data Start that obtains, thereby when carrying out speical play, and when having only the reproduced and combination of I-picture among each GOP, do not need to read all I-picture datas.So the speed of speical play has been multiplied, and picture is smoothly moved continuously.
According to a further aspect of the invention, a kind of CD is provided, wherein the I-picture data quilt of DCT coding is according to level and vertical frequency, from the DC component to high fdrequency component, be divided into many sub-pieces, I-, P-in the adjacent image information block of adjacent track and the sub-piece of B-picture data be according to chosen series arrangement, indicates the guiding of frequency component of each sub-piece content or the beginning that parity signal is recorded in each sub-piece.
Adopt said structure, the frequency division I-picture data of required low frequency component can arbitrarily be taken out, and reproduces continuously by retrieval guiding or parity signal.Like this,, just do not need to read all I-picture datas, and improve broadcasting speed and moving image smoothly if the resolution of display frame can be sacrificed to a certain degree.In addition, when using section CAV formatting optical disc, reduced the rotation waiting time that carries out in the speical play process.
According to a further aspect of the invention, a kind of CD as claimed in claim 15 is provided, wherein the I-picture data quilt of DCT coding is according to level and vertical frequency, be divided into many sub-pieces from the DC component to high fdrequency component, arranging with different forms according to the I-picture data of frequency partition in the adjacent image information block of adjacent track is used to indicate the guiding of frequency component of each sub-piece content or the front portion that parity signal is recorded in each sub-piece.
Adopt said structure, jump by the duplicate record groove and retrieve pilot signal or parity signal, just can realize quick the broadcast or reverse-play of high speed according to the I-picture data of frequency partition.In other words, required low frequency component according to the I-picture data of frequency partition by the retrieval pilot signal or parity signal can be taken out arbitrarily and reproduce successively.Like this,, just do not need to read all I-picture datas, improve broadcasting speed and moving image smoothly simultaneously if the resolution of display frame can be sacrificed to a certain degree.In addition, when using section CAN formatting optical disc, reduced the rotation waiting time that carries out in the speical play process.
According to another aspect of the present invention, a kind of CD of storing digital image information with the form of continuous blocks is provided, said I-picture data that comprises the I-picture that obtains by interior frame discrete cosine transform coding, the P-picture data of the one or more P-pictures that obtain by the discrete cosine transform coding that has carried out the forward direction motion compensation and utilize the I-picture that is positioned at its front or back and/or the data of P-picture are mixed the many frame data that constitute as the B-picture data that the reference picture carries out the B-picture that the motion compensation discrete cosine transform coding obtains.
Wherein digital mobile picture image information is divided into the following layer data with a small amount of pixel and line, with have more amount pixel and line, combine the upper layer data that forms image with following layer data, write down guiding or the parity signal that is used to show the data block type in the front of each data block.
Can arrange so in addition, make down layer data and upper layer data according to selected series arrangement.
Adopt such scheme, can and choose arbitrarily by retrieval guiding or parity signal and neededly have the I-picture data of a few pixels and line and reproduce digital mobile picture image information successively.Need not read all I-picture datas in this external speical play process and can picture reproducing, so can increase the speed of speical play.
Can arrange like this, make I-, P-in the image information block and B-picture data to put in order for adjacent image information block be different.
Adopt said structure, just can play fast or reverse-play by the high speed that the guiding or the parity signal of duplicate record groove jump search records in each data front realizes split screen I-picture data.
Can arrange like this, will indicate whether the I-picture data is the split screen data,, perhaps be recorded in the front of each image information block according to the pixel and the identification signal of the data of the quantity division that resembles line according to the frequency partition data.
Adopt said structure, just can write on the beginning of each image information block and show that the identification signal of its content judges whether the digital mobile picture image data that write down are the I-picture data by searching, data according to frequency partition, press the data that the display screen zoning is divided, perhaps data of dividing according to pixel/resemble line quantity, and can reproduce the digital mobile picture information of record successively.
Can arrange like this, make that the beginning position of digital image information piece is in alignment along the radial array of CD.
Adopt said structure, can determine the moment that track jumps exactly, need not need rotation waiting time promptly to read the speical play data serially.
According to another aspect of the present invention, provide a kind of method of playing CD, this method may further comprise the steps:
Use a disk player, this device comprises a tracking actuator that is used to follow the tracks of the analyzing spot on the booking situation groove, a follow-up control circuit and a track tracking circuit that is used to carry out jump scanning.
Use as any one described CD in the claim 14,15 and 17 and
Repeat playing back at high speed or the reverse-play of skip operation according to the guiding that is recorded in each I-picture data front or parity signal with the digital image data that is divided into several parts.
So adopt said method can playing back at high speed or reverse-play be divided into the digital image information of several parts.
According to another aspect of the present invention, provide a kind of method of playing CD, this method may further comprise the steps:
Use disk player, this device comprises a tracking actuator that is used to follow the tracks of the analyzing spot on the booking situation groove, a follow-up control circuit and a track flip-flop circuit that is used to carry out jump scanning.
Use CD as claimed in claim 19 and
Repeat skip operation to carry out playing back at high speed or reverse-play according to the identification signal that writes on each image information block front.
Utilize said method, can judge the data type of each image information block according to the identification signal that writes on each image information block front, thereby can reproduce digital image information.
Description of drawings
Fig. 1 is the block scheme of the register system among the expression embodiment 1;
Fig. 2 A and Fig. 2 B have schematically shown the digital mobile picture image data record format among the embodiment 1;
Fig. 3 A and Fig. 3 B represent among the embodiment 1 in the variation of playing disk rotation speed in the pictorial data process fast;
The process flow diagram of the speical play operation of carrying out on the basis of Fig. 4 for the jump termination address in writing on the video flag data among the expression embodiment 1;
Fig. 5 among the expression embodiment 1 in the speical play process from the process flow diagram of CD read data operation;
Fig. 6 among the expression embodiment 1 in the I-of speical play successively reproducing and P-picture process from the process flow diagram of CD read data operation;
Fig. 7 A represents digital image data record format among the embodiment 2 to Fig. 7 C;
Fig. 8 represents digital image data record format among the embodiment 2;
Fig. 9 represents digital image data record format among the embodiment 3;
Figure 10 represents among the embodiment 3 continuously in the guide groove system digital image data record format on the CD;
Figure 11 represents among the embodiment 3 to adopt in the servo-drive system digital image data record format on the CD;
Figure 12 is the process flow diagram of the read operation of expression embodiment 3, and wherein disk rotation speed has increased in special quick playing process;
Figure 13 A and Figure 13 B are illustrated in the arrangement of data among the GOP of digital mobile picture image data and comprise the arrangement of all data of audio data;
Figure 14 represents to be recorded among the embodiment 4 data ordering of the digital mobile picture image data on the CD;
Figure 15 has adopted the block scheme of digital mobile picture image information record carrier of the CD of embodiment 4 for expression;
Figure 16 represents among the embodiment 4 data ordering of the I-picture data that divides by the screen zoning in a GOP;
Figure 17 is the operational flowchart of expression embodiment 4;
Figure 18 A represents among the embodiment 5 in a GOP according to the data ordering of the I-picture data of frequency partition and the path that track jumps in playing process;
Figure 18 B represents how to obtain the I-picture data according to frequency partition;
Figure 19 represents in another example of embodiment 5 in a GOP according to the data ordering of the I-picture data of frequency partition and the path that track jumps in playing process;
Figure 20 represents in another example of embodiment 5 in a GOP to keep the path that track jumps in the journey according to the data ordering of the I-picture data of frequency partition with in broadcast;
Figure 21 represents in another example of embodiment 5 in a GOP to keep the path that track jumps in the journey according to the data ordering of the I-picture data of frequency partition with in broadcast;
Figure 22 is the process flow diagram of the operation of expression embodiment 5;
Figure 23 represents the data ordering on the zone C AV type CD among the embodiment 5, and it is preformed with the sampling servo method;
Figure 24 represents the data ordering on the continuous grooved CD among the embodiment 5;
Figure 25 is for being used for from the block scheme of the practical circuit of individual-layer data memory image among the expression embodiment 6;
Figure 26 is the block scheme of the digital mobile picture image information playing circuit of embodiment 6;
Figure 27 represents among the embodiment 6 on the CD according to pixel and resembles the I-of the layering form that line quantity divides and the arrangement of P-picture data;
Figure 28 represents to have only on the CD among the embodiment 6 arrangement of data under the I-picture data stratification situation;
Figure 29 is the block scheme of conventional video disc recording of expression and playing device;
Figure 30 is illustrated in the data ordering in the mpeg system;
Coding structure when Figure 31 represents to constitute a GOP by 17 pictures;
Coding structure when Figure 32 represents to constitute a GOP by 10 pictures;
Coding structure when Figure 33 represents to constitute a GOP by 15 pictures;
Figure 34 carries out the process flow diagram of speical play for expression according to being stored in address that record format with routine is stored in scene picture beginning in the digital mobile picture image information.
Embodiment
Fig. 1 is the block scheme of the optical disk device recording system of expression embodiments of the invention 1.In the accompanying drawings, A/D converter 30 converts analog video signal to digital signal.Mobile detector 31 is surveyed the mobile vector of digital video signal.Discrete cosine conversion circuit 32 is divided into level and vertical spatial frequency component with picture information.Adaptive quantizer of label 33 expressions, digital decommutator of label 34 expressions.35 storages of inverse discrete cosine transformation circuit are divided into the picture information of frequency component.As the reference image, 37 represent variable length coders to frame memory 36 according to mobile vector memory image information, 38 expression buffer registers.Form coding 38 increases address information and flag data.
The record format of digital mobile picture image data among Fig. 2 A and Fig. 2 B embodiment 1.In Fig. 2 A, 47 expressions are used for the sampling servo format of continuous system track offset correction or the fluctuation groove of minute surface part with reference to label, corresponding to be pre-formed on CD shown in Figure 11 the fluctuation groove or in the minute surface part of the succeeding vat shown in Figure 10,48 expressions are used for indicating the regional address of constant region territory angular velocity (CAV) system in the address of CD, the video GOP address of the boot section of the beginning part of 49 expression instruction video GOP and indication GOP address, 50 expressions are used for the video attribute data of the flag data of recorded video signal, 51 expressions indicate the I-picture boot section of I-picture the beginning part, the video boot section that 52 expressions are made of 49 to 51 parts.With reference to label 53 expression I-pictures, second I-picture data that 54 expressions are separated by servo groove or minute surface, the 3rd the I-picture data that 55 expressions use the mode identical with second I-picture data 54 to separate.With reference to label 56 expression P-picture leaders, the P1-picture data that 57 and 58 expressions use the mode identical with second I-picture data 54 to separate.
The format details that Fig. 2 B writes down in video attribute data 50.Scalability pattern (level type) with reference to the arrangement of label 59 designation number pictorial data, frame number among the 60 expression GOP, 61 expressions limit I-, B-and P-picture structure arranged among the GOP, the structure and the position of data ordering in the 62 expression I-pictures, 63 expressions are used for indicating the image of GOP whether to comprise panorama, the flag data of zoom or scene conversion, the timing code of the video area that 64 expressions are made of many GOP, 65 termination addresses of jump when being illustrated in speical play, 66 expression acoustic patterns, 67 expression still frame patterns, 68 expression remaining spaces.
How disk rotation speed changed when Fig. 3 A and Fig. 3 B were illustrated in quick broadcast with the pictorial data of the format record among Fig. 2 A and Fig. 2 B.
Fig. 4 carries out the operational flowchart of speical play for expression utilizes the jump termination address that is used for speical play in the video attribute data district of the beginning part write on video GOP.Fig. 5 indicates whether to exist the scene conversion for expression utilizes, and writes on the process flow diagram that the data in the video attribute data district of video GOP beginning are carried out the speical play operation.Fig. 6 only reproduces the process flow diagram that the mode of I-and P-picture among the GOP is carried out speical play for expression utilizes.
The operation of embodiment 1 is described with reference to the accompanying drawings.The vision signal of being represented by mpeg system is recorded on the CD through behind the digital video coding.Analog video signal at first is converted to digital signal in A/D converter 30, survey mobile vector by mobile vector detector 31 then.By relatively carrying out the three-dimensional compression with reference to image with one, carry out discrete cosine transform by discrete cosine conversion circuit 32 in frequency direction (two-dimensional direction), carry out digital conversion at adaptive quantizer 33, then carry out variable length code.
The compressed digital moving image picture information that obtains like this is added into address, boot section, attribute data or the like here, thereby has been set a form that is suitable for being recorded on the CD by buffer register 38 and form scrambler 39.For the judgement of scene conversion is the frame memory 36 of the pattern of appearance relatively continuously that is used for that is connected with the output of discrete cosine conversion circuit 35 by adopting, or is used to survey that visual vertiginous mobile vector detector 31 carries out.
Particularly, accurate judgement for scene can perhaps be realized for each its variable quantity of width of cloth picture comparison and pace of change by the chrominance information of scene conversion decision circuitry 42 by relatively being produced along time shaft respectively by chrominance information comparer 40 and monochrome information comparer.
The output of scene conversion determining device circuit 42 be used as that the scene conversion exists or non-existent information stores in the video attribute data shown in Fig. 2 A and Fig. 2 B.Form according to Fig. 2 A, video attribute data 50 is except scene conversion whether information, can also store picture in the structure, GOP of jump termination address, GOP quantity, can measure pattern, temporal mode and suchlike information, so just can utilize these attribute datas to carry out speical play or this generic operation.
Fig. 2 A and Fig. 2 B have represented digital mobile picture image data record format, and wherein I-picture and P-picture are adjacent one another are, and video attribute data 50 is arranged on the beginning part of GOP.In when record, according to the result that scene translation circuit 42 is judged, the scene conversion change exist or non-existent information stores in Fig. 2 A in the video attribute data 50, the jump termination address is stored in the video attribute data 50 when carrying out speical play.Because digital mobile picture image writing circuit has a buffer register 38, record data still remain in the buffer register 38 in the processed process of image, thereby can store the jump termination address.
For example, when being one, GOP (for example only comprises a series of images that move rapidly when not needing to jump play visual, or it is visual like the still frame similar) to the GOP of front, then relevantly do not need to play this GOP and should jump the information stores handled in attribute data, if next GOP needs to play, the sign of this operation of needs is set then.By only reproducing video attribute data 50 successively and playing the GOP that is provided with sign at its beginning part and can carry out speical play.
Except this sign, can also specify the jump termination address.
In the situation of reverse-play, buffer register 38 does not need big capacity, the storage of the termination address that just can be easy to realize to jump and represent whether previous GOP needs the setting of the sign play.
The operation of reading from CD as shown in Figure 5.At first detect the address that GOP begins to locate, read video attribute data 50 then,, just reproduce the I-picture among the GOP,, just jump to next GOP if there is not the scene conversion if there is the scene conversion.In this way, speical play is continued.
Shown in the process flow diagram among Fig. 4, speical play can also realize by reading the road that is stored in the video flag data 50 termination address that jumps.In this case, by reading video attribute data 50, the jump termination address is stored, and on this basis, reproduces the I-picture, should be jumped at current GOP and carry out the track jump when handling.In this way, realized speical play.
By using said method, can realize speical play, wherein having only among a series of GOP on the CD needs the GOP that reproduces just reproduced.In these cases, the still frame still frame that begins to locate by successively reproducing or in each scene is by successively reproducing.
I-picture and P-picture are by in the speical play process of successively reproducing therein, and it is operated as shown in Figure 6.In this case, after the video boot section was detected, I-picture and P-picture were read out, and when detecting the boot section of B-picture, began to locate the operation of duplication similarity in these GOP subsequently with regard to the video of executive logging groove skip operation to next GOP.But use this method, speical play multiple (ratio of the time of normal play and quick reproduction time) is owing to the data volume of I-picture in each GOP and P-picture is restricted greatly.
In Fig. 8, I-picture and P-picture order among each GOP are opposite, therefore need only very short rotation waiting time and just can realize the I-picture reproduction when track jumps.In the accompanying drawings, the audio frequency boot section that 69 expressions indicate audio signals to begin with reference to label, 70 expression audio data, 71 expressions are used for the video data identification parity that video data begins to locate to discern, the P2-picture boot section that 72 expression indications the 2nd P-picture begins, 73 expression P2-picture datas, the B-picture boot section that 74 expression indication B-pictures begin, 75 to 79 expression B1-are to the Bn-picture data, and the end mark of GOP end is indicated in 80 expressions.
In Fig. 9, the position that I-picture and P-picture image information are arranged moves on to another GOP from a GOP, therefore just can realize the reproduction of I-picture when track jumps through the shorter time for the treatment of.In the accompanying drawings, with reference to label 81 to 88 expression B-picture (B5-is to the B12-picture) data.
The operational process of embodiment 2 is described with reference to the accompanying drawings.In Fig. 7 A, the data among the GOP are arranged with the order of I-, P-and B-picture.In this case, speical play is the step that is included in the video boot section 52 in the video flag data 50 shown in video GOP address 49 and Fig. 2 A by repeating to read, and reproduces the I-picture then, skips P-picture and B-picture, and then the I-picture among the existing next GOP, or the like and realize.
In this case, because it is very big that the data of the I-picture in each GOP take up space, the I-picture data amount is three to five times of B-picture data amount, even therefore P-picture and B-picture ignores, the efficient of speical play (ratio of unread data volume and the data volume of reading in the speical play process) is very not high, has the stand-by period in addition.As a result, speical play speed increase multiple is not high.If but comprise 10 pictures shown in figure 32 or comprise 15 pictures as shown in figure 33 among a GOP, can carry out speical play with the speed of about twice to three times.
In order to reduce rotation waiting time, adopt data array shown in Figure 8.In the data ordering as shown in the figure, the order of I-picture and P-picture is opposite among the adjacent GOP.Under situation shown in Figure 8, if finished reproduction to the I-picture among the GOP, then the executive logging groove jumps, and begins immediately then or only reproduces I-picture among the next GOP servo-stabilization time through certain institute.
In addition, by the ordering of I-, P-and B-picture among each GOP of change, can realize a kind of like this arrangement as shown in Figure 9, make that the I-picture among a plurality of GOP can be read continuously.In illustrated embodiment, can read three I-pictures among the GOP continuously, thereby can realize level and smooth substantially speical play by the I-picture among three GOP of successively reproducing.
By reproducing the I-picture data, can need not the stand-by period of between different GOP, jumping and play.So different with embodiment 1, present embodiment can be realized level and smooth continuous moving image speical play.
Figure 10 represents the record format of grooved CD arrangement continuously among the embodiment 3.Figure 11 represents the record format arrangement of sampling servo type CD among the embodiment 3.Figure 12 is the read data operation process flow diagram, and wherein disk rotation speed has increased in the speical play process.
Introduce the operation of embodiment 3 below.In general, in order to increase the recording density of CD, constant linear velocity (CAV) record is better than Constant Angular Velocity record (VAG).But when CLV write down, the beginning of pictorial data and the arrangement of I-picture on CD were unfixed, particularly because the position, angle of I-picture is at random, so be difficult to carry out the operation of embodiment 1 and embodiment 2.Therefore CD is divided into many districts, for example the A district is to G district, and as Figure 10 or shown in Figure 11, the GOP during each is distinguished begins a theatrical performance part radially arranging in a line along CD.
By changing the CD motor in the rotational speed of same district not, perhaps by changing the frequency of data clock in record and playing process, can be so that the different linear recording density of distinguishing be equal substantially.
But under such a case, it is unequal for different districts that CD has the recording capacity of a circle.Can realize area dividing for the multiple of each circle recording capacity by the recording capacity that makes each GOP.For example, can be provided with like this, make that a GOP is made of five tracks in the innermost district, a GOP in outmost district then is made of two tracks.
Except the recording capacity that makes each GOP is each multiple that encloses recording capacity, can also be arranged to make the recording capacity of each GOP is the multiple of every half-turn recording capacity.So subregion more meticulously.If being arranged to the recording capacity of each GOP is the multiple of the recording capacity of per quart circle, subregion more meticulously.
In this case, GOP address in the video information just writes on the servo cave (fluctuation cave) of sampling servo type CD or continuously after the minute surface part of guide groove type CD, and by making the minute surface part that write down the GOP address or the length in fluctuation cave have the length different with other parts, the pickoff signals (reflected signal) that can use optical head in retrieving is as index.
Using CD to write down and play in the system of digital mobile picture image, as mentioned above, can realize speical play by adopting the track jumping mode described in embodiment 1 and embodiment 2.The rotational speed of CD in the time of can also increasing continuous the broadcast is to increase total broadcasting speed.For example, disk rotation speed is doubled, data rate doubles, and also can reproduce data.If only reproduce I-picture and P-picture, just can realize the broadcast of twice speed.
If disk rotation speed is improved four to octuple, message transmission rate is too high, can't carry out Data Detection.In this case, when reproducing I-picture and P-picture, disk rotation speed can be reduced to a value can playing, and when reproducing the B-picture, can improve disk rotation speed, shown in Fig. 3 B.
Disc drives corresponding to this broadcast is operated as shown in figure 12.The operation that repeats may further comprise the steps.At first rotational speed is improved n doubly, detect the video boot section then, jump to next GOP again to read the I-picture.By in video conventional number 50, arranging the I-picture, CD motor accelerating region and deceleration area can be set.
Introduce embodiments of the invention 4 below.Figure 13 A and Figure 13 B represent the data structure of digital mobile picture image among the embodiment 4.Figure 13 A represents the structure of GOP, and Figure 13 B represents to comprise the data ordering of the whole GOP of audio data.In the accompanying drawings, with reference to label 21 to 29 expression with reference to accompanying drawing 30 to the 33 identical data of the prior art embodiment that is introduced.Represent the boot section that designation datas begin to locate with reference to label 130,131 expressions constitute the address of each GOP of edit cell, 132 1 attach the attribute data in digital mobile picture image data, the audio frequency boot section of 133 expression indication audio data, 134 beginning parts.Video boot section with reference to label 135 expression instruction video data 136 beginning parts.Begin the P-picture boot section of part with reference to label 137 expression indication P-pictures.Begin the B-picture boot section of part with reference to label 138 expression indication B-pictures.In the accompanying drawings, P-, B-and I-picture are expressed as " P-picture ", " B-picture " and " I-picture " respectively.
Figure 14 represents the detailed structure of digital mobile picture image data ordering among the embodiment 4.Be illustrated in the fluctuation cave that is used for offset correction in the sample format of continuous guide groove type CD or the minute surface part with reference to label 139,140 expressions have the address of the CD of district's Constant Angular Velocity (CAV) rotary system, the vector address of each vector of the part of 141 expression formation GOP, the video GOP address of 142 each video of expression GOP, 143 expressions are attached to the video attribute data in the digital mobile picture image, the I-picture boot section of 145 expression indication I-picture datas, 146 beginning parts.The I-picture ECC (error-correcting code) of I-picture data error-correcting code has been write down in 147 expressions with reference to label, the P-picture boot section of the beginning part of 148 expression indication P-picture datas 149.150 expressions can measure pattern with reference to label, frame number among the 151 expression GOP, 152 expressions have shown the gop structure that I-, B-and P-picture arrange among the GOP, the position of the arrangement of data in the 153 expression I-pictures, whether 154 expression detailed attributes data such as existing panorama, zoom and scene conversion, 155 express time sign indicating numbers, 156 termination addresses of jump when being illustrated in speical play, 157 expression sound sign indicating numbers, 159 expression remaining spaces.
Figure 15 represents a block scheme, the optical disc recording apparatus that its expression is used in combination with CD among the embodiment 4.Identical with shown in Fig. 1 of pen recorder among the figure and playing device just do not have scene transition detector 100 in Fig. 1.With reference to label 8,10-12,30-39, with 43 to 46 the expression with Fig. 1 in those identical parts.
The detailed structure of the part of record I-picture data on Figure 16 CD.Video boot section 135 indication in n track group video data begin the place, 160 represent the partial data by many formations last 1/3 part of the panel of I-picture 27 (from the upper edge of display screen to article one horizontal bar separated time of down measuring 1/3 from the upper edge of display screen).With reference to the partial data of label 162 expression by many formations centre 1/3 part of the panel of I-picture 27 (from article one horizontal bar separated time to the second horizontal bar separated time of down measuring 2/3 from the display screen upper edge).With reference to the partial data of label 164 expressions by many formations 1/3 part (lower edge) of the panel of I-picture 27 from second horizontal bar separated time to display screen.Give the boot section with reference to what label 161 expression indicating section data 162 began to locate.Give the boot section with reference to what label 163 expression indicating section data 164 began to locate.With reference to label 148 expression P-picture boot sections, the P-picture data among the 165 expression GOP, the boot section that 166 expression indications the 2nd P-picture data 167 begins to locate.With reference to each digital mobile picture image integral body in label 168 expression indications (n+1) and (n+2) track group, and also indicate the P-picture data to begin the boot section of part, the section data 160 of data slice 23 in last 1/3 part that writes down the I-pictures 27 screen width of cloth is indicated in 169 expressions.
Figure 17 is a process flow diagram, be illustrated in the speical play operating process of moving image in the optical disc apparatus, said optical disc apparatus comprises a system with digital mobile picture image data file structure, wherein shield the width of cloth and be divided into several portions by the vertical direction along screen, each part comprises one group of data slice.
Operating process is described below.The digital mobile picture image is mixed by I-, B-and P-picture data 27,28 and 29 usually and constitutes, shown in Figure 31 to 33 of expression prior art example.Owing to adopted the bidimensional compression, I-picture 27 can be by independent reproduction.But, before the I-picture reproduction, can not reproduce the P-picture, and before not reproducing I-picture and P-picture, can not reproduce the B-picture.So arranging from the reasonable data of optical disk of the angle of data processing is shown in Figure 13 B, at first I-picture and P-picture is arranged continuously, and the B-picture is set afterwards.
In this case, also need in each GOP, arrange audio data.This makes it possible to carry out back record (writing down audio signal after vision signal) and editor.In addition, employing has video GOP address 142, and indication I-picture and the boot section that begins to locate 145 of P-picture and 148 as shown in figure 14, institute's data structure shown in Figure 13 A and Figure 13 B, can choose the I-picture data of a picture separately, perhaps the P-picture data of a picture is edited each GOP.
By the zone 143 that provides to write for the flag data of digital mobile picture image data, and provide the indication hierarchy whether to be fit to the measured pattern of using the pixel of specific quantity on the display screen and resembling line; Frame number 151 among the GOP, the gop structure 152 of the arrangement of I-picture, B-picture and P-picture data etc. among the indication GOP, CD can use with many kinds of signal processing system structures.By describing the I-picture data structure in the gop structure 152, described belowly be applicable to that the arrangement of speical play also can be used.
As previously discussed, utilize I-picture and P-picture are arranged in form among the GOP continuously, can implement speical play by changing I-picture data structure.In this case, by the I-picture data being divided into three parts, each part comprises the data slice of integer as shown in Figure 6, exchanges in different GOP corresponding to the position of the blocks of files of each position on the screen.This data ordering can realize by controlling buffer register with the form scrambler 39 in video disc recording shown in Figure 15 and the playing device.
Adopt data structure shown in Figure 16,, can from 3 GOP, reproduce the image of a picture if along the disc radial direction alinement, jump by the executive logging groove as shown in the figure in the boot section of GOP and the each several part data of I-picture are combined.The data volume of I-picture just can realize that with very short rotation waiting time the partial continuous of I-picture reproduces, even therefore also can make the speed of the quick broadcast that utilizes the I-picture data higher greater than the data volume of P-picture and B-picture.
Adopt the disk format of zone C AV system in addition, if region allocation makes that the data volume among each GOP is the multiple of a circle data volume or the multiple of half-turn data volume, then GOP boot section data can be arranged in a straight line along disc radial direction.
Above-mentioned operation at optical disc apparatus in the speical play process is shown in the process flow diagram of Figure 17.At first, when beginning during speical play, detect video GOP address, the device by symbol generator and so on shows information such as timing code on display screen.Then read the flag data among the GOP, and judge whether the I-picture is to cut apart type.If cut apart type, detect the boot section on I-picture screen width of cloth top, and sense data, carrying out track then jumps, then detect the boot section and the sense data of screen width of cloth center section, jump again, detect the boot section and the sense data of screen width of cloth bottom afterwards.The partial data of I-picture is made up by video memory (buffer register among Figure 15).Repeat aforesaid operations, up to finishing speical play.According to the method, just can realize playing fast and reverse-play.
By using the present invention,, also can improve the special speed multiple of broadcasting even under the situation of CLV system CD.This is because the data of I-picture are cut apart and reproduced various piece, but is again thing entire I-picture data in prior art.Should point out that in this case, the data capacity of I-picture is more much bigger than the data volume of B-picture and P-picture, in the speical play process, be to reproduce earlier the I-picture, reproduces the P-picture then, perhaps successively reproducing I-picture only.
Figure 18 A represents the arrangement architecture of digital mobile picture image data among the embodiment 5.With reference to the new data block of label 171 to 177 expression, these data blocks are that the data block layer 26 that forms at the digital mobile picture image that is obtained by the DCT coding forms when dividing according to spatial frequency shown in Figure 18 B.In Figure 18 of Figure 18 A B, the data structure of I-picture is divided into the spatial frequency district that several components of DCT sign indicating number are opened among each GOP, and the arrangement among each GOP is different.Each class frequency increases according to the order of (a) to (g).
Figure 19 represents the data structure after Figure 18 A improvement.The arrangement of I-picture P-picture data is different with another GOP among GOP.In the accompanying drawings, the boot section that begins with reference to label 180 expression indication I-picture datas.
Figure 20 represents that a GOP comprises the example of 4 P-pictures.With reference to the 3rd P-picture boot section of label 181 expression indications the 3rd P-picture data 178 beginnings, with reference to the 4th P-picture boot section of label 182 expression indications the 4th P-picture data 179 beginnings.
Figure 21 is illustrated in the operating process of considering the different broadcast of rotating the time for the treatment of under the digital mobile picture image arrangement architecture situation shown in Figure 20.Figure 22 is a process flow diagram, and it is illustrated in the I-picture by the operation according to disc drives under the situation of frequency partition.
Figure 23 is illustrated in the CD of zone C AV system and is arranged according to optical disc data under the formative situation of sampling servosystem.In the accompanying drawings, with reference to label 223 expression boot section or servo caves, 224 expression vector addresses, 225 expression audio data, the boot section of giving of data block (d) to (g) in the 226 expression I-pictures, data block (d) is to the I-picture data of (g), the boot section of 228 expression audio data in the 227 expression I-pictures.
Figure 24 represents continuous guide groove system type optical disc data arrangement.In the accompanying drawings, 229 expressions are used in the minute surface part that detects the deviation of tracking transducer with push-and-pull method tracing process with reference to label, and 230 are illustrated in the group of synchronizing information again under the situation of having used the intermediate data structure with 2-7 modulation or 1-7 modulation.The synchronizing information group comprises the PLL reference clock that is used for Data Detection again.
Down in the operation of describing embodiment 5.Using MPEG, in the standard digital moving image image compression system of JPEG etc. expression, data ordering is being carried out the DCT coding and is being finished according to vertical the division with the horizontal space frequency during with winding form scanning shown in Figure 180 to each macro block 24.For example, if the DCT coded data of 64 I-pictures is divided into piece, then form seven pieces (a) that each piece is made of 9 to 10 DCT coded datas to (g).When carrying out data recording, these I-picture datas are not that a unit is arranged with each data slice 23, but as shown in the figure, with each data block (a) to (g) is that a unit is arranged, and at the signal that begins to have located to increase boot section signal, parity signal and the like of the piece of dividing the various piece formation that forms according to frequency zones, so can in the speical play process, obtain image by the approaching data of the reproduction and the DC component of DCT coded data.According to the method, do not need to reproduce entire I-picture data with relatively large data volume.
For example suppose that CD has the structure of zone C AV system, and the GOP starting position is along CD direction alinement.Rearrange to (g) by data block (a), shown in Figure 18 A, just can only reproduce data block in the I-picture (a) continuously I-picture among each GOP.If the line density with the speed that is equivalent to four times of present standard CD (compact disk) signal transmission rates and twice is gone up tracer signal at present standard-sized CD CD (diameter is 15 centimetres), disk rotation speed will be converted to 1200rpm from 600rpm, and the longest stand-by period is the time that is equivalent to three width of cloth pictures.
For this reason, be when constituting at a GOP by 15 pictures, if can in the time of a picture, (33 milliseconds) read an I-picture, just can carry out the broadcast of successively reproducing I-picture with 15 times speed.If South Africa will rotate wait, each circle need be equivalent to the time (about 100 milliseconds) of three pictures, and maximum broadcasting speed will be five times of normal speed.
If the Play System that uses is to skip next GOP, and reproduce the I-picture among the next but one GOP, to prevent the reduction of speical play system speed multiplying power, the width of cloth in 30 width of cloth pictures is shown, and in the time of 15 times of speed, identical picture is play twice.The mobile of shown moving image is coarse.In addition, may miss the scene that needs when increasing when jumping.
In order to prevent that image is coarse and to jump, the reproduction data volume of I-picture be reduced to can recognition image degree.In other words, has only the low frequency component of DCT coding by existing.In addition, the position of low frequency component is different for each GOP.In addition, the duplicate record groove jumps.By these measures, shortened rotation waiting time.
Yet, if digital mobile picture image data are by shown in Figure 19, the data block of successively reproducing I-picture data (a) only not resembling shown in Figure 18 A is also reproduced the data block (b) of I-picture data and (c), even then also can reproduce careful image when speical play.If except the place-exchange of the data block (a) in the I-picture data as shown in figure 19 to (c), the position of I-picture and P-picture exchanges, the rotation waiting time in the speical play process can further reduce.In this case, per 4 GOP constitute the group that can obtain continuous data, utilize a series of such groups that are made of 4 GOP can realize quick broadcast.
But if the quantity of P-picture is 4 as shown in figure 20 among each GOP, per 2 P-pictures constitute a group, then realize reproducing data block in the I-picture data (a) by the position that exchanges each group and an I-picture and arrive c) quick broadcast.In this case, per 6 GOP constitute one group that can obtain continuous data, so realized quick broadcast by a series of such groups that are made of 6 GOP.
Under the situation that allows certain rotation waiting time, if speical play is the speed with several times, then the track jump process as shown in figure 21.If the track jump process is shown in dotted line, one the I-picture that then reproduces among per two GOP (utilizes the data block (a) every a GOP to arrive (g), if and the track jump process is shown in solid line, (data block (a) of utilizing each GOP is to (c) then to reproduce the I-picture of each GOP.
Data in the I-picture exchange under the situation of arrangement as shown in figure 21, are what can carry out as the operation of solid line indication, and can realize moving than picture careful under the dotted line situation.
In aforesaid speical play process, disc drives is executable operations shown in the process flow diagram among Figure 22.At first, detect the starting position of the GOP of digital mobile picture image data, and on screen, show temporal information such as timing code, disk address information, perhaps this type of information.Read video attribute data then, and judge that whether the I-picture data is by frequency division.If by frequency division, then detect the starting position of the low frequency component of I-picture, to read I-picture low frequency component and show corresponding picture, the track of carrying out the track of crossing predetermined quantity then jumps.Repeat above-mentioned manipulation up to finishing speical play.According to the method, the low frequency component of the DCT of successively reproducing I-picture coding has just been realized speical play.
In CD with sampling servosystem disk format, if from a boot section and servo cave 223 to block of information that next boot section and servo cave 223 these parts constitute, as shown in figure 23, in each district, radially arrange in a line, and in one group of block of information of said sampling servo format, filled up the I-picture data, the P-picture data, audio data and these type of data can realize on CD that then Figure 18 A is to data of optical disk structure shown in Figure 21.
In the CD of disk format with continuous guide groove system, can on CD, adopt data structure shown in Figure 24 to produce similar effects, realize that promptly Figure 18 A is to compact disk structure shown in Figure 21.In this case, the part of this from a minute surface part 229 to another minute surface part 229 constitutes a big data cell.This big data cell can be subdivided into the subdivided data unit by sync byte again, and makes the I-picture data, the P-picture data, and the length of audio data and these type of data is the multiple of subdivided data unit.According to the method, can realize on CD that Figure 18 A is to data structure shown in Figure 21.
For CD is that the situation of the CD of zone C AV form is introduced.Same under the situation of CLV form, by I-picture frequency division also being improved the speed multiplier of speical play.
Embodiments of the invention 6 are described below.
Figure 25 is a block scheme, represent to be used for weight and built the decoding circuit that 780 pixels * 480 that are made of stratification information resemble the picture intelligence that line forms, stratification information is to obtain by the digital mobile picture compressed image presentation of information information stratification that 780 pixels * 480 resemble line that is equivalent to the boil down to compressed information, and compressed information is equivalent to 360 pixels * 240 and resembles line.In the accompanying drawings, with reference to variable length coder of label 201 expressions, digital decommutator of 202 expressions, inverse discrete cosine transformation device of 203 expressions, 204 expression motion compensation circuit, 205 expression frame memories, 206 one of expression are used for the demoder that an ancient wind instrument is built the digital mobile picture compressed image data of lower floor.
Figure 26 is a block scheme, and expression is used for and will be recorded in CD, and with the optical disc apparatus of the digital mobile picture compressed image information decoding of decoding circuit stratification shown in Figure 25.In the accompanying drawings, 207 expressions are used to reproduce the broadcast amplifier of the digital mobile picture image information that is recorded on the CD with reference to label, and 208 expressions are used for detecting Data Detection and the PLL circuit from the signal data of playing amplifier 207.209 expressions are used for detecting the boot section detection and the data discriminator circuit of the boot section signal of the data of using Data Detection and 208 detections of PLL circuit with reference to label.With reference to label 210 expression Error-Correcting Circuits.
Figure 27 has schematically shown the I-picture of stratification on the CD and the arrangement of P-picture data.Expression is equivalent to the following layer data of I-picture that 360 pixels * 240 resemble the digital mobile picture image information of line with reference to label 211, the upper layer data of 212 expression I-pictures, upper layer data combines with following layer data 211 and constitutes the data that 780 pixels * 480 resemble line, the boot section of 213 expression upper layer datas 212.Lower derivate certificate with reference to label 214 expression P-pictures, the upper layer data of 215 expression P-pictures, the following layer data of second P-picture of 217 expressions, the upper layer data of second P-picture of 218 expressions, the boot section of the upper layer data of second P-picture of 219 expressions, the boot section of the upper layer data of 220 expression I-pictures, the boot section of the upper layer data of 221 first P-pictures of expression, the boot section of the following layer data of second P-picture of 222 expressions.
Figure 28 represents to have only on the CD I-picture data by the arrangement of stratification.
The operation of embodiment 6 is described below.
In the mpeg system of setting up as an international standard at present, provide a kind of, and be divided into 360 * 240 and resemble the lower map image data of line and combine and form the method that 780 pixels * 480 resemble the upper strata pictorial data of line data with the lower map image data with the data structure stratification.In conjunction with constituting the synthetic picture that 780 pixels * 480 resemble line, it is as the digital mobile picture image information on upper strata in the decoding circuit shown in Figure 25 for upper layer data and following layer data.
I-picture and P-picture by the situation of stratification under, the data on the CD can be arranged as shown in figure 27.The upper and lower data of I-picture and P-picture are led district or fellow's partitioned arrangement thus, and the position of I-picture and P-picture exchanges for a GOP and another GOP.According to the method, when carrying out speical play, the executive logging groove jumps, and the following layer data of only reading the I-picture continuously.
In addition can a stratification I-picture, thus its structure simplified.Equally in this case, the position of I-picture and P-picture exchanges for each GOP, so that can read layer data under the I-picture continuously.As a rule, the I-picture data occupies bigger space in GOP, if thereby attempt to read all data, then the speed multiplying power of speical play can not become higher.If only read the following layer data of I-picture and P-picture, can make the speed multiplying power of speical play higher, thereby and can increase the frame number that constitutes the speical play picture and make the picture gliding smoothing.
Figure 26 is a block scheme, and expression can be rebuild the video disc recording and the playing device of stratification data.From detecting as data by data detector 208 of CD, and be divided into upper layer data and following layer data by boot section detections/data discriminator 209 by playing play signal that amplifier 207 amplifies.The data of having screened are proofreaied and correct in error recovery device 210, and input with in stratification data decode circuitry similar shown in Figure 25, to realize visual reproduction.If only utilize layer data down, can only obtain the image that 360 pixels * 240 resemble line.
Claims (8)
1. playback method with optical disk data reproducing, this video disc recording by the I-picture that comprises the map information that carries out discrete cosine transform in the frame (DCT) coding, carry out the P-picture of the map information that the DCT coding of forward direction motion compensation obtains and will be positioned in time forward and backward above-mentioned I-picture, P-picture as the reference picture, carry out the digital map information that the map information piece of the B-picture of the map information that the DCT coding of motion compensation obtains constitutes
Above-mentioned CD is made of the sector;
Above-mentioned map information piece is than I-picture, the P-picture, and the B-picture is the front more, has the zone of the attribute data of this map information piece of record;
Write down the zone of above-mentioned attribute data, have and the sector corresponding address in its front, and the configuration information of the configuration of the map information in this map information piece when including the I-picture playback that is illustrated in to the above-mentioned map information piece of major general, with the sector corresponding address of next one jump destination, and in order to specify the data that whether the map information piece of above-mentioned playback time should be reset;
The sector corresponding address of above-mentioned and jump destination is the address in zone of attribute data of the map information piece of this jump destination of record;
Above-mentioned playback method is characterised in that:
Playback time is reset the above-mentioned attribute data that writes down the zone of above-mentioned attribute data;
According in order to specify the data that whether the map information piece of above-mentioned playback time should be reset, when being the data of not resetting the map information piece, these data this map information piece is not reset, and proceed to the jump of next map information piece according to above-mentioned and the sector corresponding address jump destination, on the other hand, when these data are attached most importance to projection during as the data of message block, according to above-mentioned configuration information, I-picture playback to the above-mentioned map information piece of major general, then according to the sector corresponding address of above-mentioned jump destination, proceed to the jump of next map information piece;
By carrying out above-mentioned jump repeatedly, carry out sequenced playback.
2. the playback method of CD according to claim 1 is characterized in that:
Write down included in the zone of above-mentioned attribute data, in order to specify the data that whether the map information piece of above-mentioned replay mode should be reset, be the information that has or not the scene conversion in the above-mentioned map information piece of expression.
3. the playback method of CD according to claim 2 is characterized in that:
Above-mentioned scene conversion is the scene conversion that goes out according to the temporal brightness of reflection and the change-detection of chrominance information.
4. according to the playback method of each described CD in the claim 1 to 3, it is characterized in that:
Above-mentioned map information piece is group of picture (GOP:group of picture).
5. replay device with optical disk data reproducing, this video disc recording by the I-picture that comprises the map information that carries out discrete cosine transform in the frame (DCT) coding, carry out the P-picture of the map information that the DCT coding of forward direction motion compensation obtains and will be positioned in time forward and backward above-mentioned I-picture, P-picture as the reference picture, carry out the digital map information that the map information piece of the B-picture of the map information that the DCT coding of motion compensation obtains constitutes
Above-mentioned CD is made of the sector;
Above-mentioned map information piece is than I-picture, the P-picture, and the B-picture is the front more, has the zone of the attribute data of this map information piece of record;
Write down the zone of above-mentioned attribute data, have and the sector corresponding address in its front, and the configuration information of the configuration of the map information in this map information piece when including the I-picture playback that is illustrated in to the above-mentioned map information piece of major general, with the sector corresponding address of next one jump destination, and in order to specify the data that whether the map information piece of above-mentioned playback time should be reset;
The sector corresponding address of above-mentioned and jump destination is the address in zone of attribute data of the map information piece of this jump destination of record;
Above-mentioned replay device is characterised in that and comprises:
Disc motor is with above-mentioned CD rotation; And
Shaven head light shines above-mentioned CD, and accepts the light of this CD reflection;
Playback time is reset the above-mentioned attribute data that writes down the zone of above-mentioned attribute data;
According in order to specify the data that whether the map information piece of above-mentioned playback time should be reset, when being the data of not resetting the map information piece, these data this map information piece is not reset, and proceed to the jump of next map information piece according to above-mentioned and the sector corresponding address jump destination, on the other hand, when these data are attached most importance to projection during as the data of message block, according to above-mentioned configuration information, I-picture playback to the above-mentioned map information piece of major general, then according to the sector corresponding address of above-mentioned jump destination, proceed to the jump of next map information piece;
By carrying out above-mentioned jump repeatedly, carry out sequenced playback.
6. the replay device of CD according to claim 5 is characterized in that:
Write down included in the zone of above-mentioned attribute data, in order to specify the data that whether the map information piece of above-mentioned replay mode should be reset, be the information that has or not the scene conversion in the above-mentioned map information piece of expression.
7. the replay device of CD according to claim 6 is characterized in that:
Above-mentioned scene conversion is the scene conversion that goes out according to the temporal brightness of reflection and the change-detection of chrominance information.
8. according to the replay device of each described CD in the claim 5 to 7, it is characterized in that:
Above-mentioned map information piece is group of picture (GOP:group of picture).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP143411/1994 | 1994-06-24 | ||
| JP14341194A JP3511312B2 (en) | 1994-06-24 | 1994-06-24 | Optical disc, and optical disc reproducing apparatus and method |
| JP186035/1994 | 1994-08-08 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031579841A Division CN1284173C (en) | 1994-06-24 | 1995-06-23 | Optical disk and play optical disk method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1967700A true CN1967700A (en) | 2007-05-23 |
Family
ID=15338153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101014168A Pending CN1967700A (en) | 1994-06-24 | 1995-06-23 | Optical disk and method of playback |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3511312B2 (en) |
| CN (1) | CN1967700A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8886014B2 (en) * | 2005-08-11 | 2014-11-11 | Mitsubishi Electric Corporation | Video recording apparatus, scene change extraction method, and video audio recording apparatus |
| JP5036882B2 (en) * | 2011-01-14 | 2012-09-26 | 三菱電機株式会社 | Video recording apparatus, video recording method, video / audio recording apparatus, and video / audio recording method |
-
1994
- 1994-06-24 JP JP14341194A patent/JP3511312B2/en not_active Expired - Fee Related
-
1995
- 1995-06-23 CN CNA2006101014168A patent/CN1967700A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP3511312B2 (en) | 2004-03-29 |
| JPH089327A (en) | 1996-01-12 |
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