CN100536011C - Data processing device - Google Patents

Data processing device Download PDF

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Publication number
CN100536011C
CN100536011C CNB2003801045175A CN200380104517A CN100536011C CN 100536011 C CN100536011 C CN 100536011C CN B2003801045175 A CNB2003801045175 A CN B2003801045175A CN 200380104517 A CN200380104517 A CN 200380104517A CN 100536011 C CN100536011 C CN 100536011C
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data
time
file
sound
zone
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CN1717731A (en
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伊藤正纪
冈内理
黑泽康行
中村正
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

A data processing device can reproduce video and audio, by synchronizing them, from an optical disc where video data and audio data are recorded in different regions. Each of the regions consists of one or more unit areas. The data processing device includes a reproduction control section for reading video data and audio data and instructing reproduction of the video and audio according to the data which has been read out, a head for reading out the data for each of the unit areas according to the instruction, and an audio buffer and a video buffer for accumulating the audio data and video data which have been read out. The reproduction control section instructs reading of audio data into the audio buffer from a predetermined unit area and after this, instructs reading of video data from n unit areas into the video buffer, which video data can be reproduced during a first time equivalent to the maximum time required for head movement multiplied by (n + 2) (n is an integer not smaller than 2) and a second time required for reading the audio data from the next unit area.

Description

Data processing equipment
Technical field
The present invention relates to compressing image signal and voice signal, be recorded in the contract device of regeneration of the device of storage medium of CD etc. and the picture signal that will on storage medium, write down and voice signal decompress(ion).
Background technology
With image (video) signal and sound (audio frequency) signal with the various data stream of low bit rate (bit rate) compressed encoding by standardization.As the example of such data stream, the known system flow that DV standard (civilian digital VCR SD standard) and MPEG2 system standard (ISO/IEC 13818-1) are arranged.System flow comprises program flow (PS), transport stream (TS) and PES stream 3 kinds.Such data stream standard according to the rules is recorded in CD etc.
In recent years, utilize such data stream to realize that the data recording equipment (civilian video camera etc.) of after-recording is universal.So-called after-recording is meant records new sound after having write down image and sound.By carrying out after-recording, replace the sound of being recorded originally, the sound of new recording and image synchronization are regenerated.
Below, in this manual, the sound of recording originally is called " surface acoustic " (original sound), the sound of newly recording is called " back side sound " (substituting sound).In addition image and surface acoustic are collectively referred to as " dynamic image ".In addition, the data of presentation video are called " view data ", the data of presentation surface sound are called " surface acoustic data ", the data of expression back side sound are called " back side voice data ".
After-recording is generally realized by 2 following steps.At first in the 1st step, dynamic image is recorded by the logging mode that can carry out after-recording.In this logging mode, by the data structure that is used for writing down in the future back side sound, record data stream.In the 2nd step, the dynamic image image of limit regenerative recording, sound limit, the back side is recorded.If carry out after-recording in this order, the device of regeneration (data regeneration device) can make image and back side sound synchronizing regeneration.The user indicated by describing playlist view data, voice data and the recovery time that should regenerate simultaneously.In this manual, such, image and other data are regenerated simultaneously be called regeneration simultaneously.Also have, make the deleted also passable and back side voice data of surface acoustic data exist also passable simultaneously.When coexisting, the situation of reproduced picture, surface acoustic and back side sound is simultaneously arranged also with back side sound.
In addition, in the 2nd step, except the real-time after-recording of limit regeneration dynamic image limit recording voice, do not see with ining addition regeneration dynamic image, carry out the so non real-time after-recording processing of file copy audio files.
The formation of data regeneration device is described herein.Fig. 1 represents the formation of the function square frame of data regeneration device in the past.Can the regenerate data stream of record in the CD 131 of DVD-RAM dish, Blu-ray disc (BD) etc. of data regeneration device.Below, to being that mpeg transport stream (TS) describes as data stream.TS is made of a plurality of bags (TS bag), comprises view data, surface acoustic data or back side voice data in each TS bag.
Regeneration (regeneration of image and back side sound) when explanation is undertaken by data regeneration device.Reproducing unit 121 is read TS via pick-up 130 from CD 131, carries out the processing of A/D conversion etc., exports each TS bag.The 1st transport stream decomposition portion 165 is decomposed into view data and surface acoustic data via memory buffer 172 with the TS bag.111 pairs of view data of image decompressor portion decompress (decoding), show in image displaying part 110.
On the other hand, carry out the processing of back side voice data concurrently with the processing of view data.At first, the management information of the posting field of the CD 131 of logic-based piece management department 141 management, after-recording is with the regeneration control part 171 definite back side voice datas that should read.Based on from regeneration control part 171 read indication, reproducing unit 121 is read this back side voice data, carries out the processing of A/D conversion etc., further the TS bag with back side voice data outputs in the memory buffer 172.Memory buffer 172 is stored back side voice data on the zone different with view data.Back side voice data is read from buffering storer 172 by the 2nd transport stream decomposition portion 166, and D/A converter section 176 is to this back side audio data decoding, from audio output unit 112 outputs.Also have, the 1st sound decompression portion 113 and D/A converter section 176 have identical functions on this aspect of decoded voice data.
Because back side voice data is after view data and surface acoustic data recording, be recorded independently with these, so when pick-up 130 is regenerated at the same time, be necessary to move to record position, the sense data of each data.The sequence of movement of the pick-up 130 when Fig. 2 represents synchronizing regeneration image and back side voice data.Read to as if dynamic image file in view data, the back side voice data in the audio files.
Pick-up 130 at first moves to the record position of the audio files on the CD 131, reads a certain amount of back side voice data (reading #0).Thereafter the record position of pick-up 130 addressing dynamic image files (addressing #0), read view data (reading #1).Data regeneration device begins the demonstration of image and the output of back side sound after view data is read beginning.Thereafter, pick-up 130 carries out the addressing of reading (reading #2), record image data position (addressing #2) of moving (addressing #1), back side voice data to audio files successively.
Fig. 3 represents the time transition of the size of code (data volume) of the size of code (data volume) of view data in the memory buffer 172 and back side voice data.In Fig. 3, the data of reading for decoding are deleted from buffering storer 172 when being read out.As shown in Figure 3, in addressing (2,4,6,7), the data volume of view data and voice data does not change (2) or reduces (4,6,7) simultaneously.In the reading of view data (3,8), view data increases, and on the other hand, the data volume of back side voice data reduces.In the reading of opposite voice data overleaf (5), voice data increases, and on the other hand, the data volume of view data reduces.
Pick-up 130 is read the data in continuum (continuous data zone) physically by the action of reading once.The minimum data length in continuous data zone is determined by pen recorder when record.Fig. 2 represents the position of the minimum length D in the continuous data zone relevant with view data.Minimum length differs and establishes a capital identically, also is same for the continuous data zone of voice data.
Regenerate for not interrupt images and sound ground, the back side, being necessary to make the data volume of the data of storage in the playback buffer storer 172 is not 0.Therefore, in memory buffer, fully store data, must suitably determine the minimum length in continuous data zone in the moment of record data for making.Then, as long as certain this minimum length that keeps is carried out record, just can not have interruptedly and regenerate simultaneously.From the viewpoint of record efficiency, particularly the minimum length in the continuous data zone of the view data that the consumption data amount is many is very important.Because the minimum length in continuous data zone is big more, the remaining space of storage medium just becomes and can not use more.For example, technology according to record in open communique WO02/23896 number of the world, WO03/044796 number, consider each addressing #1,2,3 necessary maximum durations among Fig. 2 and the readout time of reading #2, the minimum length D in the continuous data zone of decision correspondence image data.The reason of considering addressing #3 is because if pick-up 130 runs into the point of discontinuity (border in continuous data zone) of dynamic image file, moving of pick-up 130 then can be taken place, thereby need the extra time.Also has addressing (7) correspondence in the addressing #3 of Fig. 2 and the V of Fig. 3.Just because Fig. 3 is the worst situation of expression, so be equivalent to the addressing #2 of Fig. 2 and the dynamic image file between the addressing #3 readout time during be almost 0.
Herein, the minimum length D in the continuous data zone of correspondence image data derives based on following mathematical formulae.If it is t that the dynamic image when regenerating simultaneously reads in time length with continuous data zone the shortest V-CDA, the data rate when it reads in is Vr, the sound during after-recording regeneration is t with the time span of reading in continuous data zone A-CDA, the data rate in the regeneration is Vo.Further, the longest addressing time of establishing pick-up 130 is T SEEKIn addition the data of back side audio files read the unit of reading in for example be from the 96k byte begin to 192 bytes like this, be that 1 to 2 times with the size of data in minimum continuous data zone is a prerequisite.Why making its length with 1 to 2 times is in order to make back side audio files editor's reason easily.For example, even under the situation of part deletion, if only with in-edit before and after corresponding words, also can easily realize keeping of continuous data zone.
Like this, in Fig. 3, has following relation.
(several 1)
(Vr-Vo)t V-CDA＝Vo×(3T SEEK+t A-CDA)
(several 2)
(Ar-Ao)t A-CDA＝2Ao×tAo
(several 3)
tAo＝t V-CDA+3T SEEK
Thus, t V-CDAObtain as follows.
(several 4)
t A-CDA＝(2×Ao×Vo)×3T SEEK)/((Vr-Vo)×(Ar-Ao)-2×Ao×Vo)
Now, because Vr=Ar, several 4 can be simplified as follows.
(several 5)
t A-CDA＝3×Ao×T SEEK/(Vr-Vo-Ao-Ao×Vo/Vr)
Thus, be respectively S if establish the minimum data size in the continuous data zone of sound and sound A-CDAAnd S V-CDA(bit), then they can obtain by several 6 and several 7 respectively.
(several 6)
S A-CDA＝Vr×(t A-CDA/2)＝3×Ao×Vr×T SEEK/(Vr-Vo-Ao-Vo×Ao/Vr)
(several 7)
S V-CDA＝Vr×t V-CDA＝3×Vo×Vr×T SEEK×(1+Ao/Vr)/(Vr-Vo-Ao-Vo×Ao/Vr)
If with the object lesson explanation, according to t V-play=t V-CDA* Vr/Vo, t A-play=(t A-CDA/ 2) * Vr/Ao is if establish T SEEK=1.2 seconds, Vo=15.57Mbps, Ao=0.256Mbps, Vr=20Mbps, then image with the minimum value in continuous data zone be 18.5 second (t V-play), sound with the minimum value in continuous data zone be 18.1 second (t A-play), the image size of data is 35.7M byte (S V-CDA), the sound size of data is 58k byte (S A-CDA).That is, because must be the integral multiple of ECC piece, institute thinks more than the 64k byte sound with the size in continuous data zone.
If based on the minimum length D in the continuous data zone of above-mentioned technology decision correspondence image data, have the minimum length D very large situation that becomes.Except above-mentioned condition, if further consider ratio of defects of CD etc., minimum length D is scaled the recovery time of image, is equivalent to the data volume of about 22 seconds～23 seconds recovery time.For example, if view data is partially removed, can produce the dummy section that does not satisfy minimum length D throughout.On the other hand,, interrupt regeneration simultaneously, be necessary all images data are carried out record in the continuum greater than minimum length D in order to be implemented in after-recording nothing afterwards for whole dynamic image file.It does not satisfy the zone of minimum length D owing to can not constitute the continuous data zone, on the other hand so be not used.
In addition, connect by playlist under the situation of the voice data of regenerating simultaneously between any renewing zone of dynamic image file, can there be interruptedly regeneration simultaneously in order to ensure dynamic image and sound, be necessary to select between each renewing zone of dynamic image file greater than minimum length D, and also must select between the renewing zone of voice data greater than this minimum length.At this moment, if the minimum length of dynamic image data is long, then can not use as the playlist of practicality.Just, in order to realize the playlist of regeneration practical the time, be necessary to make minimum length short.Even preferred, can there be interruptedly regeneration simultaneously continuously than set between the renewing zone shortly yet.And preferred is not the record regenerating of oneself, if form according to the rules, even company, machine and price difference also can realize after-recording and regeneration simultaneously.
The method that has the importing pick-up Move Mode shown in the Figure 62 that in WO03/044796 number, puts down in writing that minimum length D is shortened as the method that shortens minimum length D.If according to the method, dynamic image is greater than minimum length, less than 2 times of minimum length with the continuous data zone.
From (several 8)
(Vr-Vo)t V-CDA＝2Vo×(2T SEEK+t A-CDA)
(several 9)
(Ar-Ao)t A-CDA＝2Ao×(2T SEEK+t V-CDA)
Such relational expression, according to
(several 10)
t A-CDA＝4T SEEK×Ao(1+Vo/Vr)/(Vr-Vo-Ao-3×Ao×Vo/Vr)
(several 11)
t V-CDA＝4T SEEK×Vo(1+Ao/Vr)/(Vr-Vo-Ao-3×Ao×Vo/Vr)
(several 12)
S V-CDA＝Vr×t V-CDA/2
(several 13)
S A-CDA＝Ar×t A-CDA/2
(several 14)
t V-play＝t V-CDA×Vr/Vo
(several 15)
t A-play＝t A-CDA×Vr/Ao
Obtain minimum length.If establish T SEEK=1.2 seconds, Vo=15.57Mbps, Ao=0.256Mbps, Vr=20Mbps, then image is with the minimum value (t in continuous data zone V-play) be 13.6 seconds.But,, also preferred shorter even according to the method.
So as described above, can try to achieve the recording method that more effectively utilizes optical disc data and not have the method for the data of regenerative recording interruptedly.
Also have, in this manual, will be along the sense of rotation of CD, make the adjacent recording mode in data area of the data area of back side voice data and dynamic image data be called the interleave mode, non-adjacent recording mode is called non-interleave mode.In Figure 62, the data area that makes the data area of corresponding back side voice data and dynamic image data is adjacency not.On the other hand, Figure 63 represents the example according to the data structure of the data stream of interleave mode.If make corresponding dynamic image data and back side voice data along the sense of rotation of CD in abutting connection with record, then when reading dynamic image data and back side voice data, just there is no need to carry out addressing.Thus, the minimum data length value in continuous data zone is diminished.Also have,, before comprising that recovery time length is 0.4 to 1 second the mpeg transport stream of dynamic image, the continuous data zone with this synchronous back side voice data is set in time according to the interleave mode shown in Figure 63.Back side voice data and view data are separated at the ECC block boundary, and in the continuous data area terminal, video data terminal is recorded.In the method, existence can not be carried out after-recording in real time to the voice data zone, perhaps, write processing and need very many these problems of time if carry out that non real-time data write then exist because writing position disperses because the voice data zone is segmented.
Summary of the invention
According to data processing equipment of the present invention, can be from the voice data record of the view data of presentation video and expression sound described image of CD synchronizing regeneration and described sound in zones of different.Described zone is made of the unit area more than 1.Data processing equipment comprises: the regeneration control part, and it is indicated reading of described view data and described voice data and carries out the synchronizing regeneration of described image and described sound based on the data of reading; Shaven head, it carries out reading of data based on indication to each described unit area; The described voice data that sound buffer storer, its storage are read; The described view data that image buffer memory, its storage are read.The indication of described regeneration control part is from determined according to recovery time of described sound and of being stored in the data volume of the described voice data the described sound buffer storer, one or more unit areas that store described voice data are read described voice data in described sound buffer storer, thereafter, the view data of regenerating in the time that is used for the 1st time of energy of described voice data synchronizing regeneration and the 2nd time sum is read in indication in described image buffer memory from the n that stores described view data described unit area, described the 1st time is to be equivalent to (n+2) time doubly that described shaven head moves needed maximum time, wherein n is the integer greater than 2, and described the 2nd time is reading the needed time of the interior voice data of next unit area; Described shaven head moves needed maximum time, and to be described shaven head move the needed time between interior week of described CD and most peripheral.
The data volume of the described view data that can regenerate in the time of described the 1st time and the 2nd time sum is the value of product of the reading speed of time of described the 1st time and described the 2nd time sum and described view data.
Also can equal with the described CD of product as the reading speed of the 3rd time of reading needed T.T. of described view data and described view data described image of synchronizing regeneration and described sound from the data length of described unit area divided by the resulting value of n.
Also can be the zone that one of described view data and described voice data are recorded in the centre in the radial direction in the posting field of described CD, described shaven head moves needed maximum time in the interior week of described CD and the only about half of time of the mobile required time between the most peripheral.
Description of drawings
Fig. 1 is the figure of formation that represents the functional-block diagram of data regeneration device in the past.
The figure of the sequence of movement of the pick-up 130 when Fig. 2 is expression synchronizing regeneration image and back side sound.
Fig. 3 is the figure of time transition of the size of code (data volume) of the size of code (data volume) of the view data of expression in the memory buffer 172 and back side voice data.
Fig. 4 is the figure of expression according to the formation of the function square frame of the data processing equipment of present embodiment.
Fig. 5 is the figure that represents the formation relevant with the writing function of data processing equipment shown in Figure 4.
Fig. 6 is the figure of expression according to the data structure of the MPEG-TS of data processing equipment generation.
Fig. 7 is the figure of relation of the data area of expression MPEG-TS and CD 131.
Fig. 8 is the figure of the data state that quilt is managed in the file system of CD 131 of expression record.
Fig. 9 is the figure that represents respectively to distribute the data structure of descriptor.
Figure 10 is the concept map as the figure of the relation in 1 file of expression and continuous data zone.
Figure 11 is the figure that represents the formation relevant with the after-recording function of data processing equipment shown in Figure 4.
The figure of the data flow when Figure 12 is the after-recording that is illustrated in the data processing equipment.
Figure 13 is the figure of relation of the data area of TS data structure in the expression back side sound data file and CD 131.
Figure 14 is the figure that represents the formation relevant with the regeneration function of data processing equipment shown in Figure 4.
Figure 15 is the figure of the flow direction of the data when being illustrated in the data processing equipment regeneration by the back side sound of after-recording.
Figure 16 is the figure of record rule of the situation of expression intersection record dynamic image file and back side audio files.
Figure 17 is the figure that expression comprises the TS data structure of dynamic image data and back side voice data.
The figure of the sequence of movement of the pick-up 130 when Figure 18 is expression synchronizing regeneration image and back side sound.
Figure 19 is the figure of the time transition of the size of code (data volume) of the size of code (data volume) of view data and back side voice data in the expression memory buffer 164.
The figure of the more detailed sequence of movement of the pick-up 130 when Figure 20 is expression synchronizing regeneration image and back side sound.
Figure 21 is the figure of time transition of the size of code (data volume) of the size of code (data volume) that is illustrated in view data in the memory buffer 164 and back side sound.
Figure 22 is the figure of the data structure of representation program stream.
Figure 23 is the figure of the decoder model of the view data that write down by the interleave mode of expression and voice data.
Figure 24 is expression and the figure that comprises the corresponding decoder model of program flow of still image.
Figure 25 is the figure of the example of expression dynamic image data, back side voice data or static image data (perhaps image data) regenerating model when being recorded in the zone that physically isolates.
Figure 26 is the figure of the example of expression dynamic image data and back side voice data or static image data (perhaps picture data) regenerating model when being recorded in the physically continuous zone.
Figure 27 is that expression is recorded in the dynamic image data in physically continuous zone and the figure of back side voice data.
Figure 28 is the puppet bag (pseudo-V_PCK) of puppet that is illustrated in maximum 15 of the end record of VOBU, makes the figure of the end of the VOBU appearance consistent with the end of ECC piece.
Figure 29 be that expression is used as pseudo-bag, with the figure of DVD-VR standard/DVD-Video standard as the data structure of the video packets (V_PCK) of benchmark.
Figure 30 is the figure of expression as the data structure of the sub-pictures bag (SP_PCK) of pseudo-bag use.
Figure 31 is that the longest addressing time T has been considered in expression SEEKFigure with the sequence of movement of the pick-up 130 of short addressing time T sj.
Figure 32 is the figure of the sequence of movement of the pick-up 130 of expression when crossing over the interleave zone and reading dynamic image data.
Figure 33 is expression interleave continuous data zone that dynamic image data and back side voice data arranged and figure in the continuous data zone of other back side sound of different regional records.
Figure 34 is that expression replaces the N in the continuous data zone AIndividual back side voice data is by N SThe static image data that individual ECC piece constitutes is by the figure of interleave to the data structure of dynamic image data.
Figure 35 be expression SCR at interval and the figure of the relation of the recovery time of image.
Figure 36 represents the formation of the function square frame of P-STD.
Figure 37 is that expression is by the various files in the continuous data zone of media information file MOVE0001.MIF management and the figure of dummy section file.
Figure 38 is the figure of the data structure of presentation medium message file.
Figure 39 is the figure of the data structure of expression play list file.
Figure 40 is the figure that expression is stored in the configuration example of dynamic image file in the continuous data zone and interleave file.
Figure 41 is the figure that expression is stored in other configuration example of dynamic image file in the continuous data zone and interleave file.
Figure 42 is the figure of other configuration example again that expression is stored in dynamic image file in the continuous data zone and interleave file.
Figure 43 is the figure of expression with reference to the media information file of dynamic image file and interleave file.
Figure 44 is the figure of the data structure of the media information file when representing dynamic image file and interleave file as the reference file.
Figure 45 is the figure of the various data management structures in the expression interleave file.
Figure 46 is expression with dynamic image, with reference to the figure of the data structure of the play list file of interleave file.
Figure 47 is illustrated in the embodiment 2, the figure of the management structure of the various data in the interleave file.
Figure 48 clearly represents only will not to be played the figure of the not use zone of tabulation reference as the appearance of management object.
Figure 49 is the figure that is illustrated in other management structure of the various data in the interleave file in the embodiment 2.
Figure 50 is the roughly figure of the example of the position of half that expression is arranged on dummy section file DISC0001.EMP in the territory, video disc recording zone of radial direction.
The figure of the sequence of movement of the pick-up 130 when Figure 51 is expression synchronizing regeneration image and back side sound.
Figure 52 is that other that represent data in the present embodiment read the figure of order.
Figure 53 is the figure of the example of dummy section A～C that expression will constitute dummy section file DISC0001.EMP diverse location of being configured in radial direction.
Figure 54 is that the figure of the part of dummy section file originally as the example of after-recording file formation incited somebody to action in expression.
Figure 55 is the figure of the data structure of expression dummy section management document.
Figure 56 is the figure of the example of the data structure when representing the media information file is not set.
Figure 57 is illustrated in the figure that is provided with the example of data transfer management information in the dummy section message file.
Figure 58 is the figure of the example of the such data transfer management information of expression.
Figure 59 is the figure that expression is provided with the example of the dummy section file that dynamic image data uses.
Figure 60 is the figure of the example of the expression dummy section file that is provided with interleave zone usefulness.
Figure 61 is the figure of example of the operating position of expression regional area that after-recording message file, management CD are set.
Figure 62 is the physical property data configuration of the dynamic image file that writes down in non-interleave mode of expression and back side audio files and the figure that reads order when regenerating simultaneously.
Figure 63 is the dynamic image file that writes down in the interleave mode of expression and the figure of back side audio files.
Embodiment
(embodiment 1)
Fig. 4 represents the formation according to the function square frame of the data processing equipment of present embodiment.The dynamic image data stream that this data processing equipment can coil at DVD-RAM, record comprises view data and voice data on the CD 131 of Blu-ray Disc (BD) etc., in addition, data stream that can regenerative recording.
Further, data processing equipment can also carry out after having write down image and sound, to the after-recording of new sound recording.By carrying out after-recording, data processing equipment can replace the surface acoustic (original audio) of recording originally, and the back side sound (substitute audio) and the image synchronization of new recording are regenerated.
Data processing equipment shown in Figure 4 has two kinds of functions of writing function and regeneration function.Because these are functions independently, so can separate.Thus, data processing equipment is embodied as according to order described later and carries out the data recording equipment of recording processing or as carry out the data regeneration device of Regeneration Treatment according to order described later.
The writing function and the regeneration function of data processing equipment separately are described respectively therefore.In the following description, dynamic image data stream to be describing as transport stream (TS), but also related to program flow in the back.
Fig. 5 represents the formation relevant with the writing function of data processing equipment shown in Figure 4.Data processing equipment comprises: picture signal input part 100, compression of images portion 101, voice signal input part 102, sound compression unit 103, transport stream combination section 104, pseudo-packet generation portion 105, recording portion 120, reproducing unit 121, logical block management department 141, continuous data region detecting part 160, recording control part 161.
Picture signal input part 100 is picture signal input terminals, receives the picture signal of presentation video data.The data volume of 101 pairs of picture signals of compression of images portion is carried out compressed encodingization, is generated view data.This compressed encodingization for example is the MPEG2 video compress of ISO/IEC 13818-2.Voice signal input part 102 is voice signal input terminals, receives the voice signal of expression voice data.The data volume of 103 pairs of voice signals of sound compression unit is carried out compressed encodingization, is generated voice data.This compressed encodingization is MPEG2-AAC (Advanced Audiocoding) compression of ISO/IEC 13818-7.Voice signal input part 102 and sound compression unit 103 can be used in any one situation of recording of surface acoustic and back side sound.
Also have, the sound compress mode also can be the mpeg audio layer 2 of Dolby AC-3 compression or ISO/IEC 13818-3 etc.
For example, when data processing equipment is video recorder, picture signal input part 100 and voice signal input part 102 link to each other with the image efferent and the audio output unit of tuner portion (not shown) respectively, receive picture signal and voice signal respectively from separately.In addition, when data processing equipment was video camera, video camera etc., picture signal input part 100 and voice signal input part 102 received respectively from the picture signal and the voice signal of the CCD (not shown) of camera and microphone output.
Transport stream combination section 104 (below, be designated as " combination section 104 ") will be compressed the view data of numeralization and voice data group bag in the TS bag, generate transport stream (TS).Puppet packet generation portion 105 generates pseudo-bag when the logging mode work that can carry out after-recording with data processing equipment.Pseudo-bag also is the bag by the TS regulation.
Memory buffer 164 comprises the dynamic image memory buffer of temporary transient storage dynamic image data and the sound buffer storer of temporarily storing back side sound as described later with reference to Figure 12.
Recording portion 120 is based on the indication of recording control part 161, and control shaven head (pick-up) 130 is from the position by the logical block number of recording control part 161 indications, the Video Object Unit (VOBU) of record TS.At this moment, recording portion 120 is divided into the 32K byte unit with each VOBU, adds error correcting code with this unit and is used as logical block record on CD 131.Under the centre at a logical block is through with the situation of record of a VOBU, do not stay the record that carries out next VOBU with gap continuously.
Reproducing unit 121 is read TS via pick-up 130 from CD 131, carry out the processing of A/D conversion etc., exports each TS bag.
Logical block management department 141 starts reproducing unit 121 as required, reads in the space bit map (space bit map) of UDF (the Universal Disk Format) file system that is recorded on the CD 131, grasps the operating position (using/do not use) of logical block.Then, in the terminal stage of recording processing, FID described later and document entry are write file management zone on the dish.In the present embodiment, when opening power, blank bitmap is read in unification.According to logging mode when record of the after-recording of hypothesis, when after-recording write down and after-recording when regenerating, do not need to read halfway blank bitmap.
Continuous data region detecting part 160 (below, be designated as " region detecting part 160 ") check the operating position of the sector of the CD 131 of management logical block management department 141 in, detecting untapped logical block is continuous continuous empty logical block zones in 2.6 seconds after with dominant record/regeneration rate conversion.Then, the logical block number in respective logical block zone in the fashionable Notification Record of writing of each occurrence logic block unit portion 120, is become the situation of the situation of using, notification logic piece management department 141 in addition for logical block.
The action of recording control part 161 controlling recording portions 120.Recording control part 161 sends indication to region detecting part 160 in advance, makes it detect continuous empty logical block zone.Then, recording control part 161 is fashionable writing of each occurrence logic block unit, with respective logical block number notifying recording portion 120, when logical block becomes when using situation notification logic piece management department 141.Also have, recording control part 161 also can dynamically detect the size in continuous empty logical block zone to region detecting part 160.
Fig. 6 represents the data structure by the MPEG-TS of data processing equipment generation.TS comprises a plurality of Video Object Units (Video Object Unit:VOBU), and each VOBU is made of the bag of the TS more than 1.The size of data of each TS bag is 188 bytes.The TS bag for example comprises the bag (V_TSP) of the view data of having stored compression, the bag (D_TSP) of having stored the bag (A_TSP) of the surface acoustic data of compressing and being used to store the back side voice data of being recorded future.
TS bag V_TSP comprises packet header and view data (video data).A_TSP comprises packet header and voice data (voice data).D_TSP comprises packet header and the pseudo-data of back side sound.They are discerned by the packet identifier in the packet header (Packet ID:PID) respectively.In Fig. 6, respectively V_TSP is disposed PID=" 0x0020 ", A_TSP is disposed PID=" 0x0021 ", D_TSP is disposed PID=" 0x0022 ".Also have TS bag, the bag of having stored program contingency table (PAT), the bag of having stored the bag of program map table (PMT) and having stored program clock reference (PCR) are arranged as other kind.But, because these are not special problem in the present invention, so omit its explanation and diagram.
Fig. 7 represents the relation of the data area of MPEG-TS and CD 131.The VOBU of TS comprises the data of the recovery time (demonstration time) of measuring in about 0.4～1 second of image, is recorded in the continuous data zone of CD 131.The continuous data zone is made of physically continuous logical block.In the present embodiment, having stored the words that convert with the recovery time of the view data of maximum rate on this zone is the data of 10 seconds to 20 seconds amounts.Data processing equipment adds error correcting code to each logical block.The size of data of logical block is the 32k byte.Each logical block comprises the sector of 16 2K bytes.
Also have, a VOBU can only carry out the decoding of image and sound to the data of this VOBU in principle.The size of data of other 1 VOBU if change in the scope during variable bit rate below the dominant record regeneration rate, then almost is certain when its view data when view data is fixed bit rate.
Fig. 8 represents that the data that write down are managed the state in the file system of CD 131.For example adopt the file system or ISO/IEC 13346 (the Volume and file structure ofwrite-once and rewritable media using non-sequential recording forinformation interchange) file system of UDF standard.
In Fig. 8, continuous recording TS is that filename is recorded with MOVIE.MPG.The bag structure that in file, keeps TS.1 file is made of the continuous data zone more than 1 or 2.As the position of the document entry of configuration file, set beginning sector number or logical block number.Its filename of this file and document entry position are managed by file identifier (File IdentifierDescriptor:FID).Filename is set as MOVIE.MPG in the FID frame, and document entry position beginning sector number as document entry in the ICB frame is set.Document entry comprises distribution descriptor (Allocation Descriptor) a～c that manages each continuous data zone (CDA:Contiguous Data Area) a～c.Fig. 9 represents the data structure that each distributes descriptor.Distribute descriptor to have the field of description development length (Extent Length) and extended position (ExtentPosition).
Also have, the reason that 1 file is divided into a plurality of regional a～c is because at the PC file that has bad logical block midway, can not write of regional a etc.
Figure 10 is the concept map of the relation in 1 file of expression and continuous data zone.The size of data in the continuous data zone of beginning and the continuous data zone of ending can be big or small arbitrarily.Just, the minimum length in other each continuous data zone is predetermined when record, and any one can both guarantee the zone that its minimum length is above.Data according to for example regional #0, #1 ..., #11 order be read out.Can be reading in the processing of reality with pick-up 130 in interregional moving, but in logic as continuous data processing.Such logicality data structure is called continuous data zone chain.When representing 1 file, as described later like this, can guarantee unremitting cyclic regeneration by 1 continuous data zone chain.Carry out to be described in detail in the back from the Regeneration Treatment of the data of such continuous data zone chain.
Also have, the size in the continuous data zone of beginning is the situation less than the minimum data size, is the situation of for example having deleted the previous section of the dynamic image file that writes down.In addition, the continuous data size at end becomes the situation less than the minimum data size, be for example when the record of dynamic image file, in implementing of a certain continuous data zone midway the situation of record shut-down operation, or deleted the situation of aft section of the dynamic image file of record.
Figure 11 represents the formation relevant with the after-recording function of data processing equipment shown in Figure 4.Be located at and recorded dynamic image data in the CD 131.After-recording is for the view data in the limit regeneration dynamic image data time, the back side sound of limit record and this image synchronization, the formation of the formation of the new image of must regenerating and record back side sound.
Data processing equipment comprises image displaying part 110, image decompressor portion 111, the 113, the 1st transport stream decomposition portion 165 of audio output unit the 112, the 1st sound decompression portion.
The 1st transport stream decomposition portion 165 (below be designated as " the 1st decomposition portion 165 ") obtains the dynamic image stream that is recorded in the CD 131 via pick-up 130, reproducing unit 121 and memory buffer 164.Then, the 1st decomposition portion 165 is decomposed into image data packets (V_TSP), surface acoustic packet (A_TSP) with each TS bag of dynamic image stream.Image decompressor portion 111 decompression (decoding) view data are presented in the image displaying part 110.The 1st sound decompression portion 113 decompression (decoding) view data are from audio output unit 112 outputs.Audio output unit 112 and the 1st sound decompression portion 113 also have, when can be used in surface acoustic switched to back side sound.
Data processing equipment further comprises after-recording recording control part 162.The regeneration of its transmission channel, indicating image and sound is controlled in after-recording for the dynamic image stream of handling record on the CD 131 with recording control part 162.This recording control part 162 is used for the control of the recording of back side sound simultaneously.That is, based on the control of recording control part 162, sound compression unit 103 will be input to the back side sound compressed encoding of sound input part 102, and combination section 104 is transformed to TS with the back side voice data of compressed encoding.Its result, back side voice data is recorded to CD 131 via memory buffer 164, recording portion 120 and pick-up 130 as back side audio files.
The flow direction of the data when Figure 12 is illustrated in after-recording in the data processing equipment.The dynamic image data that record finishes on CD 131 is flowed through by pick-up 130, be taken into transmission speed Vr in the dynamic image memory buffer of memory buffer 164, and this dynamic image data stream is transferred into the 1st decomposition portion 165 with transmission speed Vo.If in the 1st decomposition portion 165, be broken down into image data packets and voice data bag, then by image decompressor portion 111 and the 1st sound decompression portion 113, decoding and reproduced picture and sound.On the other hand, back side sound is transformed to voice data by sound decompression portion 103, then via combination section 104, is taken into the sound buffer storer with transmission speed Ai.Further, this voice data is written in the CD 131 via pick-up 130 with transmission speed Aw.Reading in of dynamic image data and writing of voice data by 1 mutual switching in pick-up 130 timesharing ground is realized., establish Vr＞Vo herein, Aw＞Ai.
Figure 13 represents the relation of the data area of TS data structure in the sound data file of the back side and CD 131.TS is made of the TS bag (A_TSP) that comprises the back side voice data that is encoded.TS bag (A_TSP) is to add packet header to constitute on the voice data of AAC compressed encoding.In addition, guarantee a plurality of continuous datas zone of 96k byte on the CD 131, the TS file is by continuous recording in these zones." 96k byte " also can be regular length, can also for example change in the scope from the 96k byte to the 196k byte.This makes the editor of back side audio files become very easy.In addition, each zone is physical property isolation each other also, also can be adjacent.Under the adjacent situation, also it comprehensively can be treated as a continuous data zone.The size of data in the continuous data zone of this moment becomes the integral multiple of regular length.Also have this TS file also to comprise the bag (not shown) of PAT, PMT etc. in addition respectively.
Then, Figure 14 represents the formation relevant with the regeneration function of data processing equipment shown in Figure 4.In this constitutes, for omitting explanation with the key element of Figure 11 repetition.Below, the regeneration control part 163 that the 2nd transport stream decomposition portion 166 (below, be designated as " the 2nd decomposition portion 166 "), the 2nd sound decompression portion 114 and the back side sound reproduction of data processing equipment are used is described.
The TS that the 2nd decomposition portion 166 obtains back side audio files from the sound buffer storer of buffering storer 164 wraps, and separates, extracts back side voice data from TS.The 2nd sound decompression portion 114 is with this back side voice data decompression (decoding).
The dynamic image file that regeneration control part 163 will write down on CD 131 by via pick-up 130, reproducing unit the 121, the 1st decomposition portion 165, image decompressor portion 111 and the 1st sound decompression portion 113, is regenerated as image and surface acoustic.Then, in the timing of regeneration back side sound, the back side audio files that regeneration control part 163 will write down on CD 131 is by regenerating via pick-up 130, the 166, the 2nd sound decompression portion 114 of reproducing unit the 121, the 2nd decomposition portion.The memory location on CD 131 of the TS file that 141 management of logical block management department should be read.
The flow direction of the data when Figure 15 represents in the data processing equipment regeneration by the back side sound of after-recording.The dynamic image data that has write down on CD 131 is taken in the dynamic image memory buffer with transmission speed Vr via pick-up 130.And this dynamic image data is transferred to decomposition portion 165 with transmission speed Vo, and by image decompressor portion 111 and the 1st sound decompression portion 113, is reproduced as image and sound.On the other hand, the back side voice data that has write down on CD 131 is taken in the sound buffer storer with transmission speed Ar via pick-up 130, and, this back side voice data by the 2nd sound decompression portion 114, is reproduced as back side sound via decomposition portion 166 with transmission speed Ao., establish Vr＞Vo herein, Ar＞Ao.
Figure 16 represents alternatively to write down the example of the record rule of (interleave mode just) under the situation of dynamic image file and back side audio files.The continuous data zone that dynamic image is used is included in integer (N) VOBU (condition 1) that transmits in the transmission time less than Tmax greater than Tmin.In addition, be also included within the integer voiced frame (condition 2) less than the recovery time of Tmax as back side voice data greater than Tmin.The transmission time of dynamic image and the recovery time of voiced frame are almost equal.The extent that makes them is less than setting (condition 3).In addition, the regeneration of the regeneration timing (for example PTS) that dynamic image begins and the voiced frame of beginning is regularly almost equal, and their extent is setting (for example 1 frame is following) (condition 4).Back side sound is regional and the dynamic image end in continuous data zone and the terminal consistent (condition 5) of ECC piece with continuous data.Then,, select the minimum length in the continuous data zone that dynamic image uses, so that can guarantee in other zone that by non-interleave mode sound is with continuous data zone (for example satisfying several 7) as Tmin.Like this, not only be the after-recording of non-interleave mode, the after-recording of interleave mode also becomes possibility.
In addition, further, also can determine Tmin, so that when carrying out, during regeneration, cooperate the back side voice data that writes down in the interleave mode also can regenerate simultaneously according to non-interleave mode.
Figure 17 represents to comprise the TS data structure of dynamic image data and voice data.It is other example that writes down the situation of back side voice data by the interleave mode.The continuous data zone of back side audio files physically is configured in the front near the continuous data zone of each VOBU of dynamic image file.At this moment, a back side sound with the continuous data region memory stored up with near thereafter the configuration the corresponding back side voice data of VOBU.The continuous data zone of back side voice data is made of 3 ECC pieces.2 ECC pieces (64k byte) among 3 are used in the voice data of amount in 1 second.The preparation of 1 ECC piece (32k byte) when producing as defect block used.Thus, when regenerating at the same time,, can carry out random access at an easy rate to the unit of VOBU by beginning to read from back side voice data.Its result, when the synchronizing regeneration of image and back side sound, make for the amount of reading continuously of the necessary dynamic image file of sense data without interruption become in the past 1/3.The user selects under the situation of a plurality of any scenes (scene) and these scenes of cyclic regeneration, can guarantee to image decompressor portion 111, sound decompression portion 113 and 114 without interruption data provide.Also have, as described later like this, the continuous data zone of voice data further is provided with 1 ECC piece (32k byte), static image data that should be overlapping during the regeneration that can also write down dynamic image file etc. overleaf.
Then, when the sequence of movement of pick-up 130 is described, how recording image data and back side voice data are described on CD 131.
The sequence of movement of the pick-up 130 when Figure 18 represents by the dancing mode synchronizing regeneration image of the pick-up of non-interleave mode and sound.In addition, Figure 19 represents the time transition of the size of code (data volume) of the size of code (data volume) of view data in the memory buffer 164 and back side voice data.(1) of the number of Figure 19 (1), (2) etc. and Figure 18, (2) etc. are corresponding.In addition, be with the identical number of circle corresponding among number and Figure 18 of band circle among Figure 19.
Pick-up 130 more detailed sequence of movement when Figure 20 represents synchronizing regeneration image and back side sound.One of principal character of present embodiment is to make the data length in continuous data zone than short with contact.Just,, can make the data volume deficiency of the view data that particularly regeneration rate is high,, guarantee the necessary data amount in memory buffer 164 so read the quantity in the continuous data zone of dynamic image data by increase owing to only data length is shortened.Thus, can and in readout time, there be reproduced picture interruptedly in addressing actuation time in the continuous data zone that comes and goes back side voice data yet.
Below, the concrete action of pick-up 130 is described.The pick-up 130 at first record position of the audio files from the CD 131 is read a certain amount of back side voice data (reading #0).This data volume greater than back side sound with the minimum data length in continuous data zone and less than 2 times of minimum data length.
Thereafter, the record position of pick-up 130 addressing dynamic image files (addressing #0) is read view data (reading #1).Data regeneration device begins the demonstration of image and the output of back side sound after view data is read beginning.The data length in 1 continuous data zone that the data volume of the view data of herein, reading is also used greater than dynamic image.
Finish if read #1, successive image data (reading #2) are read in the next continuous data zone (addressing #1) of pick-up 130 addressing dynamic image files.Pick-up 130 repeats the addressing action in such continuous data zone to view data and reads action.This result, the data volume of the view data in the memory buffer 164 slowly increases.
View data if necessary read end (reading #n), pick-up 130 returns reading of back side voice data.That is, pick-up 130 moves by n addressing, the continuous data zone of the next back side of addressing voice data, and from then on back side voice data (reading # (n+1)) is read in the zone.Thereafter, addressing and turn back to the position (addressing # (n+1)) in continuous data zone just now once more.
Herein, imagination needs the longest worst case of time till reading view data or voice data.Reading of each dynamic image data is the minimum data size, even and as turning back to dynamic image file by addressing # (n+1), also imagine the situation that this position data for example is the last sector in the continuous data zone.At this moment, pick-up 130 carries out addressing action (addressing # (n+2)) till arriving next view data.Then, read the view data in next continuous data zone.
Figure 21 represents the time transition of the size of code (data volume) of the size of code (data volume) of view data in the memory buffer 164 under the worst situation and back side voice data.At first pay close attention to sound buffer, in reading #1, from view data read beginning up to after till addressing #n finishes, back side voice data only do not read regenerates.Thus, the data rate Ao minimizing that is directly proportional in the data volume of sound buffer and the regeneration.
If the concern frame buffer, in reading #1, view data read beginning the time, the regeneration of image and back side sound also begins.The data volume of the view data in the frame buffer when reading data rate Vr and poor (Vr-Vo) of the data rate Vo in the regeneration increase.Be interrupted because read, so the minimizing that is directly proportional with reproduction speed Vo if begin once more to read, then increases with speed (Vr-Vo) once more at addressing #1 intermediate data.Then, in reading #n, if the data volume of sound buffer near 0, is then carried out addressing #n in order to read aloud sound data.Then, addressing # (n+1), 1 sectors of data read and # (n+2) afterwards, read view data, the data volume of frame buffer increases.Below, will begin till the addressing # (n+2) as 1 cycle from reading #1.
According to Figure 20 and Figure 21, can derive following such relational expression.
(several 16)
(Vr-Vo)t V-CDA＝Vo×((n+2)×T SEEK+t A-CDA)
(several 17)
(Ar-Ao)t A-CDA＝Ao×((n+2)×T SEEK+t V-CDA)
Wherein the meaning of the literal in the mathematical formulae is defined as follows.
t V-cda: the dynamic image in 1 cycle is with the read time in continuous data zone
t A-CDA: the read time in the continuous data zone of the back side sound in 1 cycle
T SEEK: the longest addressing time (the interior week of the CD 131 and addressing time between the most peripheral)
Also have, from Figure 20 and Figure 21 as can be seen, because back side voice data only is read out 1 time (reading # (n+1)) so t in 1 cycle A-CDACorresponding with the maximum readout time of reading # (n+1).
Several 16 the left side is illustrated in to be needed should be stored in the data volume of the view data in the frame buffer under the longest situation of time.The necessary image data amount of cyclic regeneration of the right presentation video data of several 16.According to several 16, should be stored in that image data amount in the frame buffer can be understood as so long as get final product greater than data volume that can reproduced picture between the readout time of a needed time of (n+2) inferior addressing and a back side voice data.
The data volume of the back side voice data in the sound buffer is represented to be stored in several 17 the left side.The necessary data volume of the cyclic regeneration of back side voice data is represented on the right of several 17.According to several 17, as long as the back side voice data amount in the sound buffer of should being stored in can be understood as greater than data volume that can reproduced picture between the readout time of needed time of (n+2) inferior addressing and view data.
Relation according to several 16 and several 17 can obtain following several 18 and several 19.
(several 18)
t A-CDA＝2×(n+2)×T SEEK×Ao/(Vr-Vo-Ao-Ao×Vo/Vr)
(several 19)
t V-CDA＝(Vo/(Vr-Vo))×((n+2)×T SEEK+t A-CDA)
At this moment, the dynamic image minimum data length S in continuous data zone V-CDABecome
(several 20)
S V-CDA＝t V-CDA×Vr/n
The back side sound minimum data length S in continuous data zone A-CDABecome
(several 21)
S A-CDA＝(t A-CDA/2)×Ar
According to several 20, dynamic image is with the minimum length S in continuous data zone V-CDAWill (a) time be removed the needed size of dynamic image data of resulting time quantum by n for storing with (b) total of time (a+b), wherein (a) (b) is n addressing time for 2 addressing times of the sound data that is used for reading aloud in advance and the time of the sound data that is used to read aloud.On the other hand, the back side sound minimum length S in continuous data zone A-CDABe equivalent to (c) time and (d) the needed size of back side voice data of the total of time (c+d) time for being used for storage, wherein (c) (d) uses the interregional addressing time of continuous data for being used for addressing n image for to be used for reading in advance 2 times the addressing time of view data and the readout time of view data.Also have, can make the big more and S of n V-CDAMore little.On the other hand, because n becomes greatly then t A-CDABecome big, so S A-CDAAlso become big.
Because each variate-value in several 20 and several 21 can be predesignated when record dynamic image data and back side voice data, so the after-recording of data processing equipment with recording control part 162 based on several 20 and several 21, the minimum value S in the continuous data zone that the decision dynamic image is used V-CDAAnd the minimum value S in the continuous data zone used of back side sound A-CDAUndertaken by the after-recording pattern of non-interleave mode under the situation of dynamic image record, this recording control part 162 makes the above continuous data zone of region detecting part 160 these minimum value of retrieval, to guarantee its zone.Thereafter, recording control part 162 can be indicated recording portion 120, at first writes down dynamic image data, thereafter, and record back side voice data.
As present embodiment, if establish T SEEK=1.2 seconds, Vo=15.57Mbps, Ao=0.256Mbps, Vr=20Mbps, n=7, then image with the minimum value in continuous data zone be 7.9 second (t V-play), sound with the minimum value in continuous data zone be 54.3 second (t A-play), the image size of data is 15.3M byte (S V-CDA), the sound size of data is 1.7M byte (S A-CDA), the frame buffer size is the 77.7Mbit bit, the sound buffer size is the 27.5Mbit bit.N is that the pass of the minimum length in the summation of image buffer size and sound buffer size and continuous data zone is the relation of mutual restriction (trade-off), and memory size is selected in the scope of reality.
Further consider ratio of defects and the delay under decoder mode in the continuous data zone in the present embodiment, the minimum data length of establishing the continuous data zone is about 10 seconds for dynamic image data was converted with the recovery time.Further,, consider to have write down the storage delay of the dynamic image data under the situation in voice data zone, the back side of interleave mode, convert with the recovery time, as long as can store about 100 seconds data volume for back side voice data.
If with dynamic image data was converted with the recovery time in the past, be that this necessary point is compared about at least 22 seconds～23 seconds, minimum data length can shorten significantly.Thus, can make the playlist of the combination of 10 seconds these practicality time spans of the left and right sides.In addition, even exist more because the editor of dynamic image waits the null data area of the weak point that causes, the guaranteeing of continuous data zone also is relatively easy to.Also have, according to present embodiment, be necessary the continuous data zone of guaranteeing that about 100 seconds back side sound is used though cause, but usually compare very less with the data volume of dynamic image data and for the advantage of above-mentioned dynamic image data, it does not become problem in view of the data volume of voice data.
Also have,, when carrying out the editor of hypothesis, the situation that can guarantee cyclic regeneration is also arranged even carry out the selection in shorter continuous data zone though the minimum length in the continuous data zone that dynamic image is used is 10 seconds.This is because as long as can store necessary data volume in reading in 7 continuous data zones, so other zone length also can compensate this part amount even the several successive data area is short, also can guarantee cyclic regeneration.Even but like this, the length that also must make at least 1 continuous data zone is the length that can store the playback of data of 1 maximum address time quantum.
Hereto, illustrated with the situation of transport stream as data stream.But, even the present invention also can be suitable equally when data stream is program flow.
The data structure of Figure 22 representation program stream.This program flow is to be the stream of benchmark with the DVD-VR standard.Program flow comprises a plurality of Video Object Units (Video Object Unit:VOBU).Each VOBU comprises a plurality of audio frequency packages (A_PCK) of having stored the video package (V_PCK) of video data and having stored voice data.Usually, " package (pack) " is known as a kind of exemplary form of bag (packet).
VOBU's is initial from comprising the V PCK of main packet header (sequence head), perhaps from the RDI-PCK of DVD-VR standard.The video package comprises that the words of calculating with the recovery time are the data in 0.4 second 1 second of beginning.Video package (V_PCK) is made of packet header and compressed video data.Video data comprises the data of each frame of I frame, P frame, B frame again.Figure 22 is illustrated in the start-up portion of video data and stores the example of the part of I frame.On the other hand, in audio frequency package (A_PCK), replace the video data of video package, comprised voice data.Also have, if video data is a variable bit rate, the size of data of 1 VOBU changes in the scope less than the dominant record regeneration rate.If video data is a fixed bit rate, the size of data of VOBU is roughly certain.
Example shown in Figure 22 is the program flow of expression dynamic image data, but does not have the video package among the VOBU of the program flow of voice data overleaf and only have audio frequency package (A_PCK).Perhaps back side voice data also can be an element flow.
Figure 23 represents the decoder model relevant with reading of dynamic image data that writes down in the interleave mode and voice data.This model is equivalent to function square frame shown in Figure 15.In Figure 23, the data rate (Vr) when establishing dynamic image data and reading is 15.57Mbps, and the data rate when back side voice data is read (Ar) is 0.256Mbps.When image and back side sound synchronizing regeneration, must only improve the read-out speed of 256kbps amount than common regeneration.
In Figure 23, dynamic image data is sent in the function square frame of epimere, and back side voice data is sent in the function square frame of hypomere.PS impact damper and sound buffer are realized by memory buffer 164.On the other hand, the P-STD of epimere (program flow/System Target Decoder) is decomposed into image and surface acoustic with the program flow of input, and it is decoded respectively.P-STD is equivalent to the 1st decomposition portion 165, image decompressor portion 111 and the 1st sound decompression portion 113 in Figure 15.The voice decoder of hypomere is to back side audio data decoding.Voice decoder is equivalent to the 2nd decomposition portion 166 and the 2nd sound decompression portion 114.
For example, the program flow of back side voice data can also be to comprise that still image (JPEG etc.) and picture (PNG etc.) are by the data stream of after-recording except back side voice data.Also have, so-called herein " still image " for example means the image of nature (unartificial) object as object, and picture means the artificial property image of making on computers.Just, these just come quilt to be distinguished with the purpose of managing images such as user.In the following description, to have and only mention wherein a kind of situation, but this to be the convenience in order illustrating.No matter which kind of all can be suitable for.Figure 24 represents and the program flow corresponding decoder model that comprises still image.The Regeneration Treatment of dynamic image stream is followed P-STD.Each data is decomposed according to the kind of package by the 2nd decomposition portion 166, is sent to after-recording audio buffer, JPEG impact damper, PNG impact damper that back side sound is used.Each buffer sizes is predetermined.For example, it is identical with the size of data of the storage area (back side sound of representing among Figure 16 is used the continuous data zone) of back side voice data to establish the size of the impact damper that back side sound uses.The buffer sizes that still image is used too.The output of the image of dynamic image data, surface acoustic, back side sound, still image etc. can be according to user's hope and selected, makes up data according to object, the sequential scheduling of output.
Data processing equipment is necessary not produce the overflow and the such sense data of underflow of the data that should regenerate in each impact damper.In order to read effectively, also can on CD 131, write down and dynamic image continuous data zone and back side sound relevant each recording address and the record size in continuous data zone.
The regeneration mode of (non-interleave mode) when Figure 25 represents that dynamic image data, back side voice data or static image data (perhaps picture data) are recorded on the zone that physical property separates.On CD, dynamic image data is stored in minimum data length S V-CDAThe continuous data zone, comprise that the after-recording data of back side voice data, static image data etc. are stored in minimum data length S A-CDAThe continuous data zone.At the switch that carries out being provided with behind the ECC piece of error correction, switch pick-up in the continuous data zone of striding dynamic image data with by the timing between the continuous data zone of the data of after-recording.The processing of back is carried out like that according to reference Figure 24 explanation.
The example of the regeneration mode when on the other hand, Figure 26 represents that dynamic image data and back side voice data or static image data (perhaps image data) are recorded on the continuous zone of physical property.At this moment, be the state that back side voice data is write down by interleave between a plurality of dynamic image datas.By making roughly the same regeneration picture frame and adjacent record such as back side voiced frame regularly, owing to two kinds of data once can be read into impact damper B TSo, can reduce the number of times of the addressing action of pick-up 130.In each impact damper that the output of dynamic image data and back side voice data can be switched, is sent to by switch.The processing of back is carried out like that according to reference Figure 24 explanation.
Example when Figure 27 represents to have write down dynamic image data and back side voice data according to the interleave mode.Same with Figure 63, the data length of dynamic image data greater than minimum length less than 2 times of minimum length.The data length of dynamic image data and back side voice data is to meet several 16 to several 21 length.In addition, with Figure 63 similarly, back side voice data with the transmission time (perhaps recovery time) of the back side voice data that is comprised in the continuous data zone with physically following closely the record dynamic image data equate with the image data transmission time that is comprised in the continuous data zone (perhaps recovery time).
Thus,, also can rebuild the continuous data zone before and after the editor position, easily dispose back side voice data etc. and dynamic image data again continuously even when having carried out the editor of dynamic image of partly deletion etc.
Just, in such cases, even to the real-time after-recording to voice data zone, the back side according to the different continuous data zone of non-interleave mode is possible, is difficult but carry out after-recording in real time to the voice data zone, the back side of being write down by interleave.
Also have, if making the minimum length of dynamic image data and back side voice data is to meet several length of 8～several 15, then can still but cause the minimum length of view data to prolong on the other hand to by the back side real-time after-recording in voice data zone of interleave.
Figure 28 represents that dynamic image file constitutes with the MPEG program flow and has write down under the situation of dynamic image file in the mode of the after-recording that can realize the interleave mode, at the puppet bag (pseudo-V_PCK) of maximum 15 puppets of the end of VOBU record, make the end appearance consistent of VOBU with the end of ECC piece.If according to 5th condition of limit with reference to the explanation of Figure 16 limit, the back side sound end in continuous data zone and the terminal consistent (condition 5) of ECC piece.But, but the total size of the N that generates in the logging mode of an after-recording VOBU is not limited to the integral multiple of ECC piece.Therefore, insert pseudo-bag, make the end of VOBU of the front of using near back side sound, continuous data zone consistent with the end of ECC piece.Also have, NA represents the ECC piece number in voice data zone, the back side.
That Figure 29 represents to use as pseudo-bag, with the data structure of DVD-VR standard/DVD-Video standard as the video package (V_PCK) of benchmark.Pseudo-V_PCK has the video flowing of the video data (0x00) that comprises 1 amount of bytes and fills stream (padding stream).Included video data can be more than 1 amount of bytes among the pseudo-V_PCK, but owing to are that pseudo-bag preference data is few.
Also have, data processing equipment also can wrap, replace record sub-pictures package (SP_PCK) as puppet.As long as ignore SP_PCK during regeneration.In addition, also can be used as pseudo-bag record sub-pictures bag.Figure 30 represents the data structure as the sub-pictures package (SP_PCK) of pseudo-bag use.The sub-pictures package comprises sub-picture unit (SPU).Not have data in order being illustrated in this package, 2 bytes of beginning of the sub-picture unit in the package to be set at specific value (" 0x0000 ") to get final product.
When back side sound is set in dynamic image data with pseudo-data,, also can be provided with and has and the voiced frame of this back side sound with the identical express time mark of pseudo-data (presentationtime stamp) for the convenience of editing.Thus, the processing in the time of making the voice data that writes down back side audio files in dynamic image file is oversimplified.
About the time regeneration according to the interleave mode, explanation hereto is that dynamic image data and back side voice data are illustrated with the situation about calling over that is recorded.But, select several short scenes (for example 5 seconds units) to make playlist, when regenerating, can be suitable for pick-up Move Mode shown in Figure 31 according to playlist.Figure 31 represents to have considered the longest addressing time T SEEKSequence of movement with the pick-up 130 of lacking addressing time T sj.Enclosing the number 1～4 that comes with circle is 1 cycle.When back side voice data and dynamic image data are disposed continuously, usually also can be not based on the longest addressing time T SEEKThe data volume that decision should be read in.Therefore, the addressing time of pick-up 130 when back side voice data moves to dynamic image data can be replaced into short addressing time T sj (＜T at least SEEK).
When the scene of user's selection is crossed over the interleave zone, can be suitable for pick-up Move Mode shown in Figure 32.Figure 32 represents to cross over the sequence of movement of interleave zone, the pick-up when reading dynamic image data 130, and (4) of Figure 32 and (7) are the processing of leap situation.The processing that encloses the number (4) that comes, (5), (6), (7) with circle of Figure 32 encloses the processing of the number (4) that comes corresponding to Figure 31's with circle.That is, begin to read dynamic image data (4), less read the voice data (oblique line part) that is comprised in (5) interleave zone from the place ahead slightly in interleave zone.Thereafter, the beginning of addressing dynamic image data (6) is also moved, and reads the beginning part (7) of dynamic image data.(1)～(7) be 1 cycle, later processing is carried out equally at next cycle.Also have, also can in the interleave zone, not carry out the addressing action.That is, also continue reading of data during till becoming the zone of reading object, if arrive this zone then carry out the common action of reading thereafter.Thus, exist with carrying out addressing action and compare, the situation that the loss of the traveling time of pick-up 130 tails off when continuing to read action.
Figure 33 represents the continuous data zone of dynamic image data and back side voice data interleave and is recorded in the continuous data zone of other back side voice data of zones of different.Data stream is to guarantee that between dynamic image data is with the continuous data zone back side voice data is recorded with the interleave structure in continuous data zone.For necessary dynamic image data between the renewing zone of the user's appointment of regenerating is stored in the continuous data zone that 3 dynamic image datas are used by leap.Further, the back side sound of regenerating with image synchronization is not that the back side voice data that is configured in interleave is used the continuous data zone, but is configured in the continuous data zone of writing down in non-interleave mode.Because it is not the back side voice data of regeneration object that 2 places are arranged between the continuous data zone that dynamic image is used,, moves by pick-up 130 so skipping this zone.In addition, when dynamic image is the end of file (File Tail) of UDF standard with the part of the last ECC piece in continuous data zone, detects the end of file at this 2 place and skip.Thus, end of file and the 2 place back side voice data of skipping 2 places used the continuous data zone.
Then, the example that replaces back side voice data, interleave static image data is described.Figure 34 represents to replace the N in the continuous data zone AIndividual back side voice data will be by N SThe data structure of the static image data interleave that individual ECC piece constitutes in the dynamic image data.Also have, the user can at random select regeneration static image data or regeneration with non-interleave mode back side voice data that write down, that be recorded in other continuous data zone.Under the situation of regeneration back side sound, as long as abide by the order same with order shown in Figure 33, data processing equipment makes pick-up 130 skip still image and gets final product with the data area.
The static image data zone below is described.The data area that still image is used is equivalent to N SThe data area of individual ECC piece.Can be with N SStatic image data integral body in the individual ECC piece constitutes as 1 file, also can make 1 still image comprise 1 file with the data area.When in the back of VOBU configuring static view data, also can exist therebetween and be less than N gIndividual not use sector.If do not use sector number N gFor 1 ECC piece of less than, promptly be less than 15 sectors.
When being the situation of program flow, still image can use SCR value specified scope at interval with the interleave in continuous data zone.Herein, for example can with the above Tmax of Tmin of the timing that inputs to P-STD (=Tmin+1) following (for example greater than 6 seconds less than 7 seconds) be equivalent to SCR at interval, the configuring static image is used the continuous data zone.Thus, on one side the dynamic image data of regenerating, Yi Bian in real time at N AIndividual ECC piece writes static image data.
Above-mentioned still image is closely related with the data length in continuous data zone and the recovery time of image with the dynamic image data that is present in therebetween at interval with the interleave in continuous data zone.Figure 35 represents the relation of the recovery time of SCR interval (that is transmission time) and image.If grasp with the recovery time, be necessary still image with continuous data interregional comprise can be during greater than (Tmin+1), less than (Tmin+2) in the dynamic image data (frame) of regeneration.Comprise that in such dynamic image data SCR value (being transmission time) is greater than Tmin, less than the data of (Tmin+2).This System Target Decoder with the MPEG2 standard allows that maximum 1 second regeneration delays is relevant.Figure 36 represents the formation of function square frame of the P-STD of the System Target Decoder used as program flow.That is, as shown in figure 35, comprise that at SCR the recovery time is greater than (Tmin+1), less than the data of (Tmin+2) at interval greater than Tmin, data less than (Tmin+1).On the contrary the recovery time comprise in greater than (Tmin+1), dynamic image data less than (Tmin+2) SCR at interval greater than Tmin, less than the dynamic image data of (Tmin+2).Finding out that from above for example the recovery time is 6 seconds～7 seconds data, is that 5～7 seconds data are corresponding with the SCR value.
Also have, in the present embodiment, do not consider to comprise in the continuous data zone for example the situation of defect block.Therefore, establishing the greatest drawback rate that can allow is K, considers this ratio of defects, the image data amount that decision should be guaranteed in memory buffer 164.
If in the worst case of the time diagram of Figure 19, consider the ratio of defects of ECC piece, then become so following.
(several 22)
(K’Vr-Vo)t V-CDA＝Vo×((n+2)×T SEEK+t A-CDA)
(several 23)
(K’Ar-Ao)t A-CDA＝Ao×((n+2)×T SEEK+t V-CDA)×2
(several 24)
K’＝1-K
Dynamic image doubly is as follows with the n of the time for reading in continuous data zone.
(several 25)
t V - CDA = ( n + 2 ) × VoT SEEK ( 1 + Ao / ( K ′ Vr ) ) ( K ′ Vr ) - Vo - Ao - AoVo / ( K ′ Vr )
Dynamic image is as follows with the minimum recovery time in continuous data zone.
(several 26)
t V - play = t V - CDA × ( K ′ Vr ) / ( nVo )
= 1 n × ( K ′ Vr ) × ( n + 2 ) × T SEEK ( 1 + Ao / ( K ′ Vr ) ) ( K ′ Vr ) - Vo - Ao - AoVo / ( K ′ Vr )
Dynamic image is as follows with the minimal size in continuous data zone.
(several 27)
S V-CDA＝t V-CDA×Vr/(nVo)
The dynamic image buffer sizes is as follows.
(several 28)
B V＝Vo×(3×T SEEK+t A-CDA)
Sound is as follows with the maximum time for reading in continuous data zone (minimum value 2 times).
(several 29)
t A - CDA = 2 × ( n + 2 ) × AoT SEEK ( K ′ Vr ) - Vo - Ao - AoVo / ( K ′ Vr )
Sound is as follows with the minimum recovery time of continuous data zone.
(several 30)
t A - play = ( t A - CDA / 2 ) × ( K , Vr ) / Ao
= K ′ Vr × ( n + 2 ) × T SEEK ( K ′ Vr ) - Vo - Ao - AoVo / ( K ′ Vr )
Sound is as follows with the minimal size in continuous data zone.
(several 31)
S A - CDA = Vr × t A - CDA 2
The sound buffer sizes is as follows.
(several 32)
B A＝(K’Ar-Ao)t A-CDA
Herein, several 16 can be replaced into several 22, several 17 and can be replaced into several 23, several 18 and can be replaced into several 29, several 19 and can be replaced into several 25, several 20 and can be replaced into several 27, several 21 and can be replaced into several 31.Thus, make and the continuous data zone is set becomes easy.Guarantee continuous data when zone, also all the ECC piece be can use continuously etc., do not comprise defect block and static image file totally continuous use regional.Be that successional condition is weakened.
For example, if establish T SEEK=1.2 seconds, Vo=15.57Mbps, Ao=0.256Mbps, Vr=20Mbps, n=7, K=0.02, then image with the minimum value in continuous data zone be 8.6 second (t V-play), sound with the minimum value in continuous data zone be 59.3 second (t A-play), the image size of data is 17.0M byte (S V-CDA), the sound size of data is 1.9M byte (S A-CDA), the frame buffer size is that 80.2M position, sound buffer size is the 30.0M position.Below like this, by considering ratio of defects, it is big that the minimum length in continuous data zone becomes.
Further, also can sneak into data division beyond the dynamic image data slightly with the frequency different with ratio of defects in the continuous data zone at dynamic image, the time of skipping of establishing this data division is T SVIn addition, also can be at the data division beyond sound is sneaked into voice data in the continuous data zone slightly, the time of skipping of establishing this data division is T SAThen, establish T SVAnd T SAAdd up to T SFor example, if T SVFor being T with (with reference to embodiment 1) under end of file (FileTail) situation of the UDF standard of the part of the final ECC piece in continuous data zone, time of reading of establishing 1 ECC piece when dynamic image ECCAnd n continuous data zone comprises the situation of end of file (FileTail), then T entirely S, T SV, T SACan be with several 33 to several 35 expressions.
(several 33)
T S＝T SV+T SA
(several 34)
T SV＝n×T ECC
(several 35)
T SA＝0
Then, under the worst case of the time diagram of Figure 19,, then become as follows if consider to read the time.
(several 36)
(k’Vr-Vo)t V-CDA＝Vo×((n+2)×T SEEK+T S+t A-CDA)
(several 37)
(k’Ar-Ao)t A-CDA＝Ao×((n+2)×T SEEK+T S+t V-CDA)×2
(several 38)
K’＝1-K
Dynamic image doubly is as follows with the n of the time for reading in continuous data zone.
(several 39)
t V - CDA = Vo [ ( n + 2 ) × T SEEK + Ts ] ( 1 + Ao / ( K ′ Vr ) ) ( K ′ Vr ) - Vo - Ao - AoVo / ( K ′ Vr )
Dynamic image is as follows with the minimum recovery time in continuous data zone.
(several 40)
t V - play = t V - CDA × ( K , Vr ) / ( nVo )
= 1 n × Vo × [ ( n + 2 ) × T SEEK + Ts ] ( 1 + Ao / ( K ′ Vr ) ) ( K ′ Vr ) - Vo - Ao - AoVo / ( K ′ Vr )
Dynamic image is as follows with the minimal size in continuous data zone.
(several 41)
S V-CDA＝t V-CDA×Vr/(nVo)
The dynamic image buffer sizes is as follows.
(several 42)
B V＝Vo×(3×T SEEK+t A-CDA)
Back side sound is as follows with the maximum time for reading in continuous data zone (minimum time for reading 2 times).
(several 43)
t A - CDA = 2 × Ao [ ( n + 2 ) T SEEK + Ts ] ( K ′ Vr ) - Vo - Ao - AoVo / ( K ′ Vr )
Back side sound is as follows with the minimum recovery time in continuous data zone.
(several 44)
t A - play = ( t A - CDA / 2 ) × ( K , Vr ) / Ao
= K ′ Vr × [ ( n + 2 ) T SEEK + Ts ] ( K ′ Vr ) - Vo - Ao - AoVo / ( K ′ Vr )
Back side sound is as follows with the minimal size in continuous data zone.
(several 45)
S A - CDA = Vr × t A - CDA 2
Back side sound buffer sizes is as follows.
(several 46)
B A＝(K’Ar-Ao)t A-CDA
Further, regenerate simultaneously any interval of dynamic image file and the such after-recording regeneration of audio files of research user.Specifically, suppose as shown in figure 33 dynamic image data and voice data record alternatively, make up the situation of carrying out after-recording regeneration with the audio files in the interval different zone of user's appointment that is recorded in this dynamic image data, the worst situation comprises that at the dynamic image in 1 interval of user's appointment the sound of 2 interleaves uses the continuous data zone in the continuous data zone as shown in figure 33.In addition, also comprise 2 end of file.In such cases, be T if establish sound with time of skipping in continuous data zone A-CDA, T then S, T SV, T SACan be replaced into several 47 to several 49.
(several 47)
T S＝T SV+T SA
(several 48)
T SV＝2×n×T ECC+2×n×T A-CDA
(several 49)
T SA＝0
If it is several 44 to satisfy with the minimum value in continuous data zone that sound is set, and the dynamic image that makes appointment satisfy with the length in continuous data zone several 40, then during after-recording regeneration, can to 165 transmission of the 1st transport stream decomposition portion should cyclic regeneration data.That is, can provide the data that to regenerate to demoder continuously.
For example, if establish T SEEK=1.2 seconds, the back side sound of Vo=15.57Mbps, Ao=0.256Mbps, Vr=20Mbps, n=7, K=0.02, interleave were 10 seconds with the continuous data zone, then image with the minimum value in continuous data zone be 10.7 second (t V-play), sound with the minimum value in continuous data zone be 71.4 second (t A-play), the image size of data is 21.3M byte (S V-CDA), the sound size of data is 2.3M byte (S A-CDA), the frame buffer size is that 85.1M position, sound buffer size is the 36.1M position.Below like this, when writing down dynamic image data and back side voice data zone according to the interleave mode, image is compared with the situation of interleave not with the minimum value in continuous data zone and is become greatly.
(embodiment 2)
Then, the 2nd embodiment according to data processing equipment of the present invention is described.Identical according to the formation of the data processing equipment of present embodiment with the formation of the data processing equipment of as shown in Figure 4 the 1st embodiment.Therefore, omitted the explanation of each inscape of data processing equipment.
In the present embodiment, data processing equipment utilizes the data structure of following explanation, dummy section of the dynamic image file of management in the 1st embodiment, back side audio files, static image file, CD 131 etc. is more effectively realized reading and writing to the data of dummy section of each data.
Figure 37 represents by various files and dummy section file in the continuous data zone of media information file MOVE0001.MIF management.Now, if but begin the record of dynamic image data MOVE0001.MPG according to the logging mode of after-recording, then the after-recording of data processing equipment generates media information file MOVE0001.MIF with recording control part 162.Dynamic image file MOVE0001.MPG file and media information file MOVE0001.MIF are 1 pair 1 correspondences.That is, when having a plurality of dynamic image file, after-recording generates and the corresponding media information file of each dynamic image file with recording control part 162.The media information file that generates is recorded on the CD 131.
Then, after-recording, will be added in the media information file with the start address in the zone of each data corresponding file name, storage, size of data etc. when writing down back side voice data and static image data etc. afterwards according to after-recording with recording control part 162.The data structure of Figure 38 presentation medium message file.In the media information file, recorded and narrated the filename tabulation of the file (back side audio files and static image file etc.) of the dynamic image file name, dummy section filename of 1: 1 correspondence and after-recording record, further, recorded and narrated the behaviour in service management information in interleave zone.
Describe in the time of with reference to Figure 37 and Figure 38, media information file MOVE0001.MIF is dynamic image file, back side audio files, static image file as the file of reference object, so as the object of reference these filenames are recorded and narrated in the media information file.In the example of Figure 37, in the continuous data zone, static image file and back side audio files are recorded near in the zone before the dynamic image data.Further, data processing equipment is with the object of dummy section file MOVE0001.EMP as reference.So-called dummy section file is defined as in the set in the zone (dummy section E) that does not have file in the continuous data zone, and the posting field of this zone during as record back side audio files on CD 131 etc. uses.
In near the regional F1 before the dynamic image data, write down static image file 1 and 2 as 2 files.At this moment, in the area-name " F1 " of the behaviour in service management information of media information file, recorded and narrated static image file 1 and 2 filename (STILL0001.JPG, STILL0002.JPG), start address #1 separately and #2 (with F1 to begin be the relative position that 0 file begins), each size of data.As shown in figure 38, if see the media information file, since determine easily some files of using of can being associated with dynamic image file, for example with filename, the memory location of the file of the back side sound of this dynamic image file synchronizing regeneration, still image etc., therefore make under the situation of playlist of synchronizing regeneration image and back side sound etc. the user, can easily utilize data.In addition, particularly when the playlist from other utilizes identical dynamic image data, back side sound and still image etc., because 1 local management behaviour in service, so the utilization again of same data is easy.
Also have, in Figure 37 and Figure 38, in the continuous data zone in the dynamic image data file behaviour in service in interleave back side audio files etc., media information file management interleave zone be illustrated.But whether the media information file is not generated by the interleave record according to the dummy section file, but record is with the file of the management information headed by the information relevant with the relation of record position constantly with the regeneration of dynamic image file.
The application examples of this media information file then, is described.Because in the media information file, recorded and narrated the file that is associated, becomes access object with dynamic image file, so, then can generate the playlist (Figure 38) that easy realization is regenerated simultaneously if utilize the media information file.Promptly, when the user according to the playlist that makes, specify relatively when regenerating the path arbitrarily with dynamic image file,, then can easily determine in the regeneration path of this dynamic image back side audio files, static image file that can reference etc. if with reference to the media information file.The dynamic image data that can determine to regenerate, its regeneration period etc. also have, in Fig. 4, not have to put down in writing the device that is used to import playlist, as long as but can be the known input medias of mouse and keyboard etc. for example.
Figure 39 represents the data structure of play list file.Filename tabulation and regeneration control information in playlist, have been recorded and narrated with reference to the file of playlist.Regularly begin regeneration from each file of playlist reference according to the regeneration of recording and narrating the regeneration control information, continue regeneration according to recovery time length in addition.If indicate as the data and the regeneration timing of the object of regeneration simultaneously by the user, then recording control part 161 or after-recording use recording control part 162 based on the media information file, determine the information of this dynamic image file, still image, the back side audio files name that regeneration is comprised in the path, and, indication based on the user, the regeneration of determining them regularly and recovery time length etc. is recorded and narrated play list file.
Also have preferred recording portion 120 physical property concentrated area record medium information file and play list file on CD 130.This is because pick-up 130 can once read into these files the cause on the storer (for example memory buffer 164) in short time.For example, if the user deletes static image file, then produce and to carry out the media information file of managing this static image file and the modification of playlist are handled, after having revised each data on the storer, pick-up 130 can not carry out addressing action and once at CD 131 enterprising line items.
In a continuous data zone, also can by a plurality of dynamic image file and betwixt the interleave file of interleave constitute.Figure 40 represents to be stored in the dynamic image file in the continuous data zone and the configuration example of interleave file.Herein, under the short situation of shooting time, after-recording can be write down a plurality of files (A, B, C and D) with recording control part 162 in the continuous data zone of a dynamic image data.At this moment, also can generate media information file with each correspondence of each dynamic image file.In each media information file and illustrate previously same, recorded and narrated the information of the back side audio files that is associated with corresponding dynamic image file etc.By such record, can effectively utilize the interleave zone.
In addition, Figure 41 represents to be stored in other configuration example of dynamic image file in the continuous data zone and interleave file.Specifically, in Figure 41, represented also will be in short-term by the shooting time of dynamic image than recovery time of the minimum length that is equivalent to the continuous data zone a plurality of dynamic image file and the continuous data zone that constitutes of the interleave file of interleave betwixt.Under this routine situation, after-recording with recording control part 162 can shorten the interleave zone size of data, reduce recovery time of back side sound etc., and this recovery time is adjusted into the recovery time identical with dynamic image.But,, must determine length writing time of dynamic image data in order to ensure the after-recording zone.For example, be necessary it is to have write down to write down automatically afterwards in 5 seconds to stop such logging mode.In addition, even common record, when the non-registering time in short-term, shorten and be necessary to dispose again the record position of dynamic image data for being used in the zone of carrying out after-recording.According to such recording method, also can effectively utilize the interleave zone.
Figure 42 represents to be stored in other a configuration example again of dynamic image file in the continuous data zone and interleave file.Different with the example of Figure 41, in the example of Figure 42, the size of data of interleave zone F1～F4 is kept the minimum data size in sound zone, the back side, also can only shorten dynamic image data partial data size.But, in this case, because the size in the interleave zone of the data of storage after-recording becomes big, so the possibility that exists record efficiency to reduce.
Also have, hereto, illustrated in the media information file, each data file in the interleave zone of management dynamic image data and this dynamic image data correspondence.But, as shown in figure 43, also each data in the interleave zone can be treated as a part of data in 1 interleave file.The media information file of Figure 43 is only with reference to dynamic image file and interleave file.The data structure of Figure 44 presentation medium message file during only with reference to dynamic image file and interleave file.Because in the interleave file, stipulated back side sound, still image, dummy section etc., in " kind " specific these.Compare with the situation that back side voice data and static image data etc. are treated as respective files, can cut down the distinctive data volume of file of the title etc. of each file.
Variation when then, the generation play list file being described.Figure 45 represents the management structure of the various data in the interleave file.As above-mentioned, recording control part 161 or after-recording write downs behaviour in service according to the posting field of the various data in the interleave file (sound of back side sound etc., still image, use regional) with recording control part 162 in the media information file.Play list file #1, information category, Data Position and the regeneration timing etc. of in the regeneration control information, preserving sound #1, still image #1 and still image #2.Same play list file #2, information category, Data Position and the regeneration timing etc. of in the regeneration control information, preserving still image #1 and still image #2.As mentioned above, recording control part 161 or after-recording generate play list file with recording control part 162 based on the media information file.
Figure 46 represents with dynamic image file, with reference to the data structure of the play list file of interleave file.Because each back side voice data in the data of an interleave file part and the interleave zone, static image data etc. are corresponding, so when each playlist makes, if retrieval MOVE0001.INT just can know behaviour in service and use is regional.That is, because there is no need to retrieve the regeneration control information that makes the playlist that finishes, so new making of playlist is easy.
Also having, in Figure 45, is to have write down voice data, static image data in the interleave file, but also can be used as and interleave file independently sound data file or static image file record.By being made as independently file like this, becoming the interleave file and can include only untapped zone.But even in this case, it is constant also to establish the physical location of cutting apart originally to the data area of interleave file.
Figure 47 represents the management structure of the various data in the interleave file in the present embodiment.Be with the difference of Figure 45, the behaviour in service management information that in the media information file, writes down can be only with the object that does not use the relevant information in zone as management.
Figure 48 represents other management structure of the various data in the interleave file in the present embodiment.Clearly represented only will not to be played the appearance of the not use zone of tabulation reference as management object.When new playlist makes,, then can hold easily and not use the data area if with reference to the media information file.But, must retrieve whole play list file, enquiry data behaviour in service with reference to MOVE001.MPG.
Figure 49 represents other management structure of the various data that the after-recording file of non-in the present embodiment interleave mode is interior.In this management structure, the behaviour in service of the dummy section of guaranteeing is in advance only managed by playlist.That is, back side sound, the still image in the after-recording file that generates afterwards, the kind of not using zone etc., start address etc. are managed as the regeneration control information of play list file.But in such cases, when new playlist makes, under the various data conditions of utilizing again in the after-recording file that has existed, regeneration control information, assurance behaviour in service in the playlist that must retrieval have existed.
(embodiment 3)
In the 1st and the 2nd embodiment of data processing equipment, do not mention the record position on CD of the file of generation especially.But according to the record position of file, if addressing time situation about shortening increases, then the data volume in the impact damper is difficult to reduce, and its result has vibrating the advantage of grow etc.That is to say, even pick-up has missed under the situation of read-out position during vibration, if residue has the possibility height of data in storer, also step-down of the possibility of the loss of data that should regenerate then.In addition, if the addressing time shortens, then the beginning of regeneration simultaneously can be shortened time delay.In addition, remaining access can be distributed to other access.The user also there is no need to reserve consciously the zone that after-recording is used in addition.Thus, when the user expected later on carrying out after-recording, can not exist did not have remaining posting field and inexecutable situation.Therefore, below, preferred record position and relevant therewith application examples are described.
Figure 50 represents dummy section file DISC0001.EMP is arranged on the roughly example of the position of half about the posting field of the CD of radial direction.So-called " the roughly position of half of the posting field of CD " be meant, for example when half position is benchmark with this, is the position of the central part in about 3% the scope of the recording capacity of CD.Record position be confirmed by region detecting part 160 vacant after, by recording control part 161 or after-recording with recording control part 162 decisions.On the dummy section in the dummy section file, by writing down back side voice data afterwards, maximum amount of movement and traveling time in the time of making between addressing dynamic image data and voice data are reduced to half.Also having, also can be dynamic image file at the object of the roughly location records of half of the posting field of CD.Even this is because dynamic image file is recorded in the situation of this position, also with the example of front fully similarly, maximum amount of movement and traveling time in the time of making between addressing dynamic image data and voice data are reduced to half.This also is same in following example.
The sequence of movement of the pick-up 130 when Figure 51 represents synchronizing regeneration image and back side sound.Mobile pick-up 130 till after-recording file (for example file of back side voice data and static image data) at first.At first, this moment, the 130 the longest needed addressing times of pick-up became the maximum address time T SEEKHalf.Read after-recording file (read #1) thereafter.Thereafter, pick-up 130 moves to dynamic image file from the after-recording file.At this moment, the 130 the longest needed addressing times of pick-up also become the maximum address time T SEEKHalf.Thus, because considered to be kept to half to the traveling time of No. 2 pick-ups 130 that come and go of audio files, so can reduce the image data amount that to guarantee in the memory buffer 164 from dynamic image file.Further, can also make and only reduce time delay till the regeneration beginning maximum address time T SEEK
Figure 52 represents that other of data in the present embodiment read order.In this example, except that dynamic image file and the audio files relevant, also carry out reading of picture file with back side audio files.Because audio files and picture file can obtain by the result of after-recording, so the part of dummy section file shown in Figure 50 is assigned to this posting field.Thus, can obtain the advantage of Figure 51 equally.At first, pick-up 130 is read after the audio files, to the storage area addressing of the dynamic image file that becomes the object of reading.The addressing time of this moment also can be the maximum address time T as mentioned above SEEKOnly about half of (t Hj).
Then, the necessary part in the continuous data zone of dynamic image file is read in after-recording at most for n time with recording control part 162.At that time, carry out (n-1) inferior addressing action at most.Once more read audio files thereafter.The addressing time to audio files is the maximum address time T SEEKHalf (t Hj).
After audio files is read, further read picture file.Maximum traveling time between audio files and picture file when mobile, owing to be in dummy section, so be than maximum address time T SEEKHalf also will be shorter time (t Sj).
Read after the picture file, till dynamic image file, carry out the addressing action once more, read dynamic image file from assigned position.
As above explanation,, carry out (n+3) inferior addressing action at most by except dynamic image file and audio files, also reading picture file.But, since wherein 3 addressing times between the variety classes file less than the maximum address time T SEEKHalf (t Hj), so it is less to suppress continuously the amount of reading.In other words, the minimum length in the continuous data zone of corresponding dynamic image is further shortened.
By Figure 52, can obtain following several 50 and several 51 relation.
(several 50)
(Vr-Vo)t V-CDA＝Vo×(n×T SEEK+2×t hj+t sj+t A-CDA+t G-CDA)
(several 51)
(Ar-Ao)(t A-CDA+t G-CDA)＝Ao×(n×T SEEK+2×t hj+t sj+t V-CDA)×2
Herein, be t the readout time of establishing the continuous data zone of image data G-CDA, other mark is as the explanation about the 1st embodiment.Relation is worked as t thus G-CDADuring for the specified bit rate, energy and the 1st embodiment are similarly obtained t V-CDAAnd t A-CDA
By above formation,, also the amount of reading continuously (buffering capacity) that is used to realize the dynamic image data of unremitting after-recording regeneration can be suppressed for less even be not alternatively recording voice data and image data of physical property.
Figure 53 represents to make a plurality of dummy section A～C of constituting dummy section file DISC0001.EMP at the diverse location of the radial direction example of configuration that staggers.For example, the hatched example areas that is equivalent to Figure 50 as the position shown in the dummy section B.Each zone for example is meant the position in 3% the scope of memory capacity of CD.Even dummy section is set shown in Figure 53, because the traveling time of pick-up 130 also can be than maximum address time T SEEKShort, so the data slip in its impact damper can be suppressed for less.
The example of the formation that the part that Figure 54 represents dummy section file originally is assigned with as the after-recording file.The part zone of the original dummy section file that the storage area utilization on CD 131 of playlist PLAY0001.PLF is guaranteed in advance.The remainder of dummy section is reconstructed the dummy section file DISC0001.EMP that has reduced for size of data.
The data class in the after-recording file and the address of address and dummy section are recorded as the behaviour in service management information in the dummy section management document MOVE0001.MAN.The dummy section management document was managed the after-recording dummy section of being guaranteed of CD integral body originally, if be used because of after-recording makes this dummy section afterwards, then the original dummy section of dummy section management document management is the situation how to be used.
On the other hand, Figure 61 represents to be provided with the example of behaviour in service of the regional area of after-recording message file, management CD.Management method shown in Figure 61 is the variation of the management method shown in Figure 54.Promptly, any one of Figure 54 and Figure 61 is identical on this aspect of data management about at the interregional interleave of the continuous data of dynamic image file back side voice data etc. the time, but at the behaviour in service of in Figure 54, using the dummy section of being guaranteed by the after-recording of dummy section management document management CD integral body, in Figure 61, be to be different on this aspect of behaviour in service by the dummy section of after-recording information file management CD integral body.Also having, on this aspect of management data area, is identical with the dummy section management document of front.
For example, data processing equipment utilizes the after-recording message file according to following journal file.At first, during disk format, recording portion 120 is at dish central portion recording reservation regional document DISC0001.EMP.Then, optical disk device recording dynamic image file, media information file.Thereafter, for back side audio files, still image etc. are carried out after-recording, at first the part in the zone that subscribed area domain file DSC0001.EMP is occupied generates after-recording file PLAY0001.PRF and after-recording message file, distributes this zone.The zone of after-recording file to audio files distributed thereafter.Rest parts is owned by the after-recording file.Then, write down the play list file of regenerate simultaneously dynamic image file and audio files.The generation of playlist and the Regeneration Treatment of having utilized playlist shown in Figure 54 and 61, the media information file, management that utilizes the time mark etc. of dynamic image file, management dynamic image file by after-recording/by after-recording after-recording message file, the after-recording of data use and guarantee not use the after-recording file of part and the play list file of regulation playlist to carry out in the zone of being guaranteed.
Figure 55 represents the data structure of dummy section management document.In dummy section management document DISC0001.MAN, recorded and narrated the whole dummy sections for originally, be the data of which kind of kind, where, stored with what kind of size.On the other hand, the playlist PLAY0001.PIF shown in Figure 54 is with reference to sound #1, still image #1, still image #2 and do not use the zone to manage.The information that is used for reference to these is the regeneration control information that has illustrated at embodiment 2.Also have, this regeneration control information is for not using the zone also to manage address blank.
As mentioned above, because the common behaviour in service of the dummy section file used of the after-recordings all guaranteed originally of management of dummy section management document, so when new playlist made, the utilization again of the various data in the dummy section management document was easy.In addition, by the behaviour in service management information in the reference dummy section management document, also can more effectively retrieve the position of dummy section.
The example of the data structure when Figure 56 represents the media information file is not set.In this example, do not stipulate the media information file, can manage, use the behaviour in service in interleave zone in the lump by dummy section management document DISC0001.MAN.Data structure and Figure 55 of the dummy section management document of this moment are same.
Figure 57 is illustrated in the example that is provided with data transfer management information in the dummy section message file.The data transfer management information management is for example 5 seconds to be the data that should transmit of unit and the record position of these data.For example the data of sound #1 be from after-recording regeneration beginning 10 seconds with the interior data that should be read into, in addition still image #1 be from after-recording regeneration beginning at 20 seconds with the interior data that should be read into.In addition, still image #2 begins 30 seconds to 40 seconds with the interior data that should be read into from after-recording regeneration.
Figure 58 represents the example of such data transfer management information.Size of data is illustrated in the size of data that should be read between 5 seconds.Be illustrated between initial 5 seconds and should read in 5 seconds between next 5 seconds the sound of 0.256Mbps.Expression should be read in still image #2 between next 10 seconds.Expression does not have the data that should read between next 10 seconds.Then, expression should be read in still image #2 between next 10 seconds.
By the data transfer management information management transmission time is set, under the data conditions of reading in the after-recording file, can determine the data volume of reading in effectively.For example, even the amount of reading of the 1st time after-recording file under the condition of addressing performance that is predetermined and data transmission period, is to be the amount in 60 seconds in the transmission time, if the optical disc apparatus of implementing is more at a high speed, for example then also can read the data till 40 seconds.Therefore, can know the data that to read and the record position in 40 seconds from data transfer management information.In addition, by with such being treated in advance, can make the data processing equipment action in the mode that only writes down necessary data in the after-recording file.That is,, then in the after-recording file, there is no need to write down any data if in some transmission time intervals, do not transmit necessary data.On the other hand, under the situation that does not have such data transfer management information, be necessary in the after-recording file, to guarantee not use the data area.Under the situation that does not have data transfer management information, the data that must transmit the after-recording file with fixed bit rate are prerequisite.
On the other hand, Figure 59 represents not to be the posting field that after-recording is used but the example that the posting field that dynamic image data is used is provided with the dummy section file.For example, the data stream of considered interleave dynamic image data and back side voice data is by the previous section of editing and processing, dynamic image data and the deleted situation of aft section.Among the dynamic image of interleave part, the part that no longer is used by the deleted grade of editing and processing is as the data processing that constitutes the dummy section file DISC0002.EMP in the CD that dynamic image data uses.That is, the part that can judge by the definite dynamic image file of dummy section file is not the object of regeneration.
Above-mentioned example also can be suitable equally for the data of the posting field that the after-recording of interleave is used.Figure 60 represents to be provided with the example of interleave zone with the dummy section file.With the example of dynamic image data similarly, deleted grade in the data in the zone of interleave and the part that no longer is used can be as the data processing that constitutes the dummy section file DISC0002.EMP that dynamic image data uses.
Also have, the data recording area that becomes the part of dummy section management document DISC0002.EMP and DISC0003.EMP also can be preserved its data same as before, also can be for example uses as the zone of other file of the static image file of records photographing etc.
Also have, in embodiments of the present invention 3, be illustrated for the example that takes out the zone under the situation of carrying out after-recording in non-interleave mode, from dummy section file DISC0001.EMP, if but the dummy section of CD is arranged, brand-new not use zone also can be distributed.
Also have, in embodiments of the present invention, in the zone of record back side voice data, also not only recording voice also writes down static image data, image data, text data, dynamic image data and executive routine etc.
Also have, in embodiments of the present invention, the unit of the minimum length (minimal size) in the continuous data zone of record dynamic image, still image, picture etc. is any one of transmission time, recovery time and demonstration time, can convert shown in the mathematics formula respectively.In addition, further about recovery time and transmission time, also as narration in the embodiment 1,1 second delay in the necessary taking into account system target decoder model.
In addition, in each embodiment, logical block is that 32k byte, sector are the 2k byte, but also can be that logical block size is the integral multiple of sector-size, and for example logical block is that 16k byte, sector are the 2k byte.In addition, also can logical block, the sector all is the 2k byte.
In addition, in each embodiment, also can be with QuickTime format description play list file.In addition, in each embodiment, regeneration when also can describe dynamic image file and back side audio files with the standardized SMIL of W3C (SynchronizedMultimedia Integration Language) (regeneration side by side) regularly.The relation of dynamic image file and back side audio files can clearly be described from regeneration viewpoint regularly etc. thus.For example, by specifying, can specify the starting position of regenerating simultaneously from the beginning elapsed time of image file and from the beginning elapsed time of audio files.In addition, by using the SMIL language, dynamic image file, back side audio files and this file movement under the situation of personal computer, by the application software on the personal computer, also can be regenerated by the SMIL player.
In addition, in each embodiment, image compression encoding and sound compressed encoding are respectively MPEG2 image compression encoding and AAC compressed encoding.But also can be MPEG1 image compression encoding or MPEG4 image compression encoding etc., MPEG-Audio compressed encoding, Dolby AC3 compressed encoding or Twin-VQ compressed encoding etc.Also have, in each embodiment, write down the back side sound of corresponding dynamic image overleaf in the audio files.But, also can write down the music (BGM etc.) that does not have direct time relationship with dynamic image, regenerate by the method identical with the regeneration of back side sound.
In addition, in each embodiment, it is the identical time that the maximum traveling time of pick-up has adopted when reading in writing fashionable, but also can be the different time.Just, under they are different situation, must select reasonable time or big time as the maximum traveling time of pick-up, to obtain the size of data in continuous data zone.
In addition, in the above description, the unit that constitutes transport stream is the transmission package of 188 bytes.But, also can utilize at the transmit timing information of adding 4 bytes near the front of transmission package (for example value of representing with the clock value of 27MHz), the unit bag of 192 bytes altogether.
Further, replace transport stream, program flow and element flow in the explanation hereto, also can adopt QuickTime stream and based on other data stream of the stream of ISO Base Media form etc.
(in the possibility of industrial application)
The present invention can be applicable to make by the sound of after-recording recording etc. and regenerate with image synchronization The optical disc apparatus processed particularly, also can be applicable to the cheapness of the addressing time with comparison low speed Optical disc apparatus. Further, the present invention also can be applicable to the optical disc apparatus that can carry out to CD after-recording, Can effectively utilize the posting field of CD.

Claims (4)

1, a kind of data processing equipment, from the voice data record of the view data of presentation video and expression sound described image of CD synchronizing regeneration and described sound in zones of different, wherein,
Described zone is made of the unit area more than 1,
Described data processing equipment comprises:
The regeneration control part, it is indicated reading of described view data and described voice data and carries out the synchronizing regeneration of described image and described sound based on the data of reading;
Shaven head, it carries out reading of data based on indication to each described unit area;
The described voice data that sound buffer storer, its storage are read;
The described view data that image buffer memory, its storage are read,
The indication of described regeneration control part is from determined according to recovery time of described sound and of being stored in the data volume of the described voice data the described sound buffer storer, one or more unit areas that store described voice data are read described voice data in described sound buffer storer, thereafter, the view data of regenerating in the time that is used for the 1st time of energy of described voice data synchronizing regeneration and the 2nd time sum is read in indication in described image buffer memory from the n that stores described view data described unit area, described the 1st time is to be equivalent to (n+2) time doubly that described shaven head moves needed maximum time, wherein n is the integer greater than 2, and described the 2nd time is reading the needed time of the interior voice data of next unit area;
It is in the interior week of described CD and the mobile needed time between the most peripheral that described shaven head moves needed maximum time.
2, data processing equipment according to claim 1, wherein,
The data volume of the described view data that can regenerate in the time of described the 1st time and the 2nd time sum is the value of product of the reading speed of time of described the 1st time and described the 2nd time sum and described view data.
3, data processing equipment according to claim 1, wherein,
From described image of described CD synchronizing regeneration and described sound, this CD is the CD of the product of the data length of the described unit area reading speed that equals the 3rd time and described view data divided by the resulting value of n, and described the 3rd time is needed T.T. of reading of described view data.
4, a kind of data processing equipment, from the voice data record of the view data of presentation video and expression sound described image of CD synchronizing regeneration and described sound in zones of different, wherein,
Described zone is made of the unit area more than 1,
Described data processing equipment comprises:
The regeneration control part, it is indicated reading of described view data and described voice data and carries out the synchronizing regeneration of described image and described sound based on the data of reading;
Shaven head, it carries out reading of data based on indication to each described unit area;
The described voice data that sound buffer storer, its storage are read;
The described view data that image buffer memory, its storage are read,
The indication of described regeneration control part is from determined according to recovery time of described sound and of being stored in the data volume of the described voice data the described sound buffer storer, one or more unit areas that store described voice data are read described voice data in described sound buffer storer, thereafter, the view data of regenerating in the time that is used for the 1st time of energy of described voice data synchronizing regeneration and the 2nd time sum is read in indication in described image buffer memory from the n that stores described view data described unit area, described the 1st time is to be equivalent to (n+2) time doubly that described shaven head moves needed maximum time, wherein n is the integer greater than 2, and described the 2nd time is reading the needed time of the interior voice data of next unit area;
Described view data and described voice data one of be recorded in the zone in the centre in the radial direction in the posting field of described CD, described shaven head moves needed maximum time and is half the time in interior week of described CD and the mobile required time between the most peripheral.
CNB2003801045175A 2002-11-28 2003-11-27 Data processing device Expired - Fee Related CN100536011C (en)

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