CN101587733B - AV data recording method, AV data recording device - Google Patents

Abstract

An original stream file and an after-recording data file are managed as different files. In the original stream file, data is made up of sets of partial data (CU) divided in accordance with a predetermined interval. Likewise, in the after-recording data file, data is made up of sets of partial data (CU, CA) divided in accordance with a predetermined interval. These sets of data are recorded onto a disc such that the after-recorded data (CA) is recorded in a region adjacent to a relevant original stream (CU). This allows reproduction and real-time after-recording with the use of a general MPEG-2 PS/TS decoder. Moreover, this allows realization of data recording that causes less interruption of reproduction when non-destructive editing is carried out with respect to an after-recorded result.

Description

AV data record method, AV data recording equipment

It is dividing an application of following application that the application relates to female case:

The applying date: on October 15th, 2003

Application number: 200380101652.4

Denomination of invention: AV data record method, AV data recording equipment, data medium, program and program record medium

Technical field

The present invention relates to a kind of to hard disk, CD, semiconductor memory etc. can random-access recording medium view data, recording method, pen recorder and the recording medium of voice data.

Background technology

The digital video record reproducing device of use dish media (below be called the video disk recording device) is popularized.With regard to these devices, the same with the band media, require the cheap technology that realizes post-recorded (after recording) function.The post-recorded function be to the audio or video that recorded at rear supplement information, the function of audio frequency especially.

As the prior art that realizes the post-recorded function with the dish media, the JP 2001-43616 communique (open day February 16 calendar year 2001) as the Japanese Laid-Open Patent Publication of the applicant's application is arranged.Below, with Figure 20 (a), (b) its summary is described.

In JP 2001-43616 communique, stream file 3000 is stream format alone, and the post-recorded data of inserting reproduced in synchronization between the primary flow data of cutting apart by the recovery time of every regulation (the video/audio data of initially recording) consist of with the zone.Take Figure 20 (a) as example, before part primary flow data 3021, insert the post-recorded data of the post-recorded voice data that is used for the storage reproduced in synchronization with regional 3011.3012 and 3022 and 3013 and 3023 relation too.

When being recorded in stream file 3000 in the CD 3001, shown in Figure 20 (b), by with the part primary flow data of reproduced in synchronization and post-recorded data with area configurations physically near, can be when comprising the reproduction of post-recorded data, tracking (seek) is become Min., suppress the reproduction time-out that tracking causes.In addition, by being set for the value (about the several seconds) of considering seek time etc. and can carrying out real-time post-recorded the recovery time of part primary flow data, guarantee real-time post-recorded.

In addition, as widely used data record method in the world, have have with JP 2001-43616 communique in the Transport Stream (below be called MPEG-2TS) that defines among the ISO/IEC 13818-1 of the flow structure different structure put down in writing or Program Stream (below be called MPEG-2PS).For example, DVD-Video is MPEG-2PS, is MPEG-2TS based on the data transmittal and routing form of the equipment room of digital broadcasting or IEEE-1394.With regard to the prior art that relates to the post-recorded of having considered MPEG-2PS/TS, JP 2000-306327 communique (open day on November 2nd, 2000) and Unexamined Patent 11-298845 communique (open day on October 29th, 1999) as Japanese Laid-Open Patent Publication are arranged.

But, in the situation of the flow structure of in the applicable above-mentioned JP 2001-43616 communique to MPEG-2PS/TS, putting down in writing, even if reproduced by the code translator of normal operation, also may not be correctly decoded.The following describes its reason.

With regard to MPEG-2PS/TS, set the code translator model as benchmark, and multiplex video data and voice data, so that the memory buffer of the code translator of the audio frequency in this code translator model, video can underflow or overflowed.But, in the situation of the flow structure of above-mentioned JP 2001-43616 communique, in each post-recorded data with the voice data of storage more than 1 second in zone.Reproduced in the situation of this stream file by general MPEG-2PS/TS code translator, gathering the voice data that sends more than 1 second, the memory buffer of tone decoder is overflowed.

In addition, the post-recorded function of putting down in writing in the JP 2000-306327 communique is according to the multiplexed regulation of aforesaid MPEG-2PS, the multiplexed post-recorded data function in zone in stream, but in the lower situation of the transfer rate of dish, have real-time post-recorded hard problem.

On the other hand, Unexamined Patent 11-298845 communique is by being recorded in the post-recorded data in other file, thereby satisfies the multiplexed regulation of MPEG-2PS in each file.At this moment, in the situation of reproducing the post-recorded result, in order to read alternately file and the primary flow file of record post-recorded data, need to repeat tracking.Therefore, carry out in the result to post-recorded in the situation of non-destruction editor (flow data on the inactive order utilizes reproduction path information to carry out apparent editor), higher because suspending the possibility of reproducing between the tracking tracking.In addition, also unfavorable aspect power consumption.

Summary of the invention

The present invention makes in view of the above problems, and its purpose is to provide a kind of reproduction or real-time post-recorded and less data record method of reproduction time-out in non-destruction editor post-recorded result's situation that is implemented on the general MPEG-2PS/TS code translator.

In order to address the above problem, AV data record method of the present invention will be according to the rules multiplexed rule a plurality of flow datas are carried out AV data after multiplexed with the synchronous associated data of described AV data, be recorded on the recording medium, it is characterized in that, possess: the 1st step, by each predetermined distance, described AV data and described associated data are divided into part AV data and partial association data; The 2nd step on described recording medium, is guaranteed be used to the continuum of recording a series of described part AV data and described partial association data, i.e. the 1st continuum; The 3rd step, the described part AV data of continuous recording and described partial association data in described the 1st continuum; With the 4th step, log file system management messages on described recording medium, described file system management information with described part AV data from when described partial association data manage as different files respectively, management is processed into the information that different files are used with described part AV data from described partial association data.

According to above-mentioned formation, AV data (for example primary flow) and the associated data (for example post-recorded data) that will be recorded on the above-mentioned recording medium by the 1st step are divided into part AV data and partial association data, and set the record unit that guarantees seamless-reproduced or real-time post-recorded for.

By the processing of the 2nd, the 3rd step, make between the synchronous data continuously, the part AV data after will cutting apart and partial association data are recorded in the position that physically approaches each other on the above-mentioned recording medium.

And, in the file system management information of the 4th step record, by part AV data are become different files with the partial association data management, guarantee thus real-time post-recorded, and can realize being reproduced by high, the general MPEG-2PS code translator of non-destruction editor performance.In addition, in the situation that the reproduction of the reproduction that makes the AV data and associated data is carried out synchronously, because part AV data and partial association data are pressed close to record, thus the frequency step-down of tracking, so large with the leeway of other data reproduced in synchronization.For example, even if also edit additional patterns data etc. by non-destruction outside the post-recorded audio frequency, it is also lower to reproduce the possibility that is suspended.

In addition, with regard to regard to the file system management information of different files, the information recording/of the corresponding relation by near the part AV data expression being configured on the recording medium and partial association data is in recording medium, can not know relatively easily continuous recording part AV data and partial association data with reference to file system management information, can read in optimum data.

In addition, AV data record method of the present invention also can constitute possesses the 5th step, and the corresponding informance of the positional information of reproduction zero hour of described part AV data and described the 1st continuum is recorded in the described recording medium.

According to above-mentioned formation, can specify easily the position of the partial association data (post-recorded is with regional) corresponding to the part AV data that consist of the post-recorded object.

In addition, AV data record method of the present invention also can constitute possesses the 6th step, and whether the described partial association data of management are recorded near the corresponding described part AV data information recording/in described recording medium.

Meet with when stating documentarily part AV data and partial association data in the situation of fault, the partial association data in the discarded record record CA again in other zone.

According to above-mentioned formation, this moment is with regard to the information of managing these partial association data as can be known, near the part AV of correspondence data, there are not the partial association data, thus, when non-destruction editor or when reproducing non-destruction edited result, can judge easily the not interval of continuous recording part AV data and partial association data, the possibility that can be in advance pass on this interval to suspend to reproduce to the user is high.

In addition, other AV data record method of the present invention can with multiplexed rule according to the rules multiplexed the AV data of a plurality of flow datas with the synchronous associated data of described AV data, be recorded on the recording medium, it is characterized in that: possess the 7th step, by each predetermined distance, described AV Data Segmentation is become part AV data; The 8th step, on described recording medium, guarantee be used to the continuum of recording a series of described part AV data and part reservation data, i.e. the 1st continuum, this part reservation data guarantees at record during described associated data, corresponding to the posting field of the partial association data of described part AV Data Segmentation; The 9th step, limit are made described part reservation data, and the limit is the described part AV data of continuous recording and described part reservation data in described the 1st continuum; With the 10th step, log file system management messages on described recording medium, wherein, described file system management information with described part AV data from when described part reservation data manages as different files respectively, management is processed into the information that different files are used with described part AV data from described part reservation data.

According to above-mentioned formation, the AV data (for example primary flow) that will be recorded on the above-mentioned recording medium by the 7th step are divided into part AV data, and set the record unit that guarantees seamless-reproduced or real-time post-recorded for.

By the processing of the 8th, the 9th step, make the part AV data after cutting apart and be used for guaranteeing that the part reservation data of the posting field of the partial association data synchronous with it is recorded in the position that physically approaches each other on the above-mentioned recording medium continuously.

And, by by the file system management information of the 10th step record part AV data being managed into different files with the part reservation data, real-time post-recorded when guaranteeing the record associated data, and can realize being reproduced by high, the general MPEG-2PS code translator of non-destruction editor performance.

In addition, with regard to above-mentioned AV data record method, also can constitute and possess the 11st step, when the described associated data of record, by each predetermined distance, described associated data is divided into the partial association data; The 12nd step is recorded in described partial association data and the guaranteeing in the zone of the described part reservation data of corresponding part AV continuous data recording; With the 13rd step, with the file system management information recording/on described recording medium, this document system management messages is when managing described partial association data as the file outside described part AV data and the described part reservation data, management is used for described partial association data are treated to the information of different files.

According to above-mentioned formation, in the situation that the reproduction of the reproduction that makes the AV data and associated data is carried out synchronously, because closely recording section AV data and partial association data, so the frequency step-down of tracking, so large with the leeway of other data reproduced in synchronization.For example, even if also edit additional patterns data etc. by non-destruction outside the post-recorded audio frequency, it is also lower to reproduce the possibility that is suspended.

In addition, with regard to regard to the file system management information of different files, the information recording/of the corresponding relation by near the part AV data expression being configured on the recording medium and partial association data is in recording medium, can be not with reference to file system management information, know relatively easily continuous recording part AV data and partial association data, can read in optimum data.

By following record, other objects, features and advantages of the present invention will be apparent.In addition, interests of the present invention become clearer in the following describes of reference accompanying drawing.

Description of drawings

Fig. 1 (a), Fig. 1 (b) represent one embodiment of the present invention, Fig. 1 (a) is the primary flow file of expression embodiment of the present invention 1 and the data pie graph of post-recorded data file, and Fig. 1 (b) is the above-mentioned primary flow file of expression and the arrangement plan of post-recorded data file on dish.

Fig. 2 is that the signal of the video disk recording device of expression embodiment of the present invention consists of block diagram.

Fig. 3 (a) is the figure that the expression directories/files consists of, and Fig. 3 (b) is the graph of a relation of the management information among the UDF that consists of of this directories/files of expression.

Fig. 4 is the figure that file/catalogue consists of of expression embodiment of the present invention 1.

Fig. 5 (a)-Fig. 5 (c) is the pie graph of the primary flow file of expression embodiment of the present invention 1.

Fig. 6 is the formation key diagram of the post-recorded data file of expression embodiment of the present invention 1.

Fig. 7 is the figure of the parametric device model of expression embodiment of the present invention 1.

Fig. 8 is the figure of the reference post-recorded algorithm of expression embodiment of the present invention 1.

Fig. 9 is the pie graph of the flow management message file of expression embodiment of the present invention 1.

Figure 10 (a)-Figure 10 (b) is the pie graph of the video_unit_table of expression embodiment of the present invention 1.

Figure 11 (a)-Figure 11 (b) is the pie graph of the VU_flags of expression embodiment of the present invention 1.

Figure 12 (a)-Figure 12 (b) is the pie graph of the continuous_area_table of expression embodiment of the present invention 1.

Figure 13 (a)-Figure 13 (b) is the pie graph of the CA_flags of expression embodiment of the present invention 1.

Figure 14 is the pie graph of the program information file, PIF of expression embodiment of the present invention 1.

Figure 15 (a)-Figure 15 (b) is the pie graph of the scene_table of expression embodiment of the present invention 1.

Figure 16 is the process flow diagram of the recording processing flow process of expression embodiment of the present invention 1.

Figure 17 is the process flow diagram of the reproduction processes flow process of expression embodiment of the present invention 1.

Figure 18 is the process flow diagram of the scene reproduction treatment scheme of expression embodiment of the present invention 1.

Figure 19 (a), Figure 19 (b) represent other embodiment of the present invention, and Figure 19 (a) is the figure that the data of two kinds of stream files of expression embodiment 2 consist of, and Figure 19 (b) is the arrangement plans of these stream files of expression on dish.

Figure 20 (a), Figure 20 (b) represent prior art, and Figure 20 (a) is the data pie graph of expression stream file, and Figure 20 (b) is the arrangement plan of this stream file of expression on dish.

Figure 21 is the file/catalogue pie graph of expression embodiment of the present invention 3.

Figure 22 (a), Figure 22 (b) represent one embodiment of the present invention, Figure 22 (a) is the primary flow file of expression embodiment of the present invention 3 and the data pie graph of post-recorded zone reservation file, and Figure 22 (b) is primary flow file and the arrangement plan of reservation file in post-recorded zone on dish after expression is recorded.

Figure 23 (a) is the graphic file of expression embodiment of the present invention 3 and the data pie graph of post-recorded data file, and Figure 23 (b) is graphic file, post-recorded data file, primary flow file and the arrangement plan of reservation file in post-recorded zone on dish behind expression post-recorded and the non-destruction editor.

Figure 24 is the pie graph of the program information file, PIF of expression embodiment of the present invention 3.

Figure 25 (a)-Figure 25 (b) is the pie graph of the subaudio_table of expression embodiment of the present invention 3.

Figure 26 (a)-Figure 26 (b) is the pie graph of the graphics_table of expression embodiment of the present invention 3.

Figure 27 (a)-Figure 27 (b) is the SA_flags of expression embodiment of the present invention 3 and the pie graph of gr_flags.

Figure 28 is the process flow diagram of the flow process processed of the scene reproduction of expression embodiment of the present invention 3.

Figure 29 (a), Figure 29 (b) represent one embodiment of the present invention, Figure 29 (a) is the primary flow file of expression embodiment of the present invention 4 and the data pie graph of post-recorded data file, and Figure 29 (b) is the above-mentioned primary flow file of expression and the arrangement plan of post-recorded data file on dish.

Figure 30 (a), Figure 30 (b) are the figure of the reference post-recorded algorithm of expression embodiment of the present invention 4.

Embodiment

Below, describe embodiments of the present invention in detail with reference to accompanying drawing.The explanation is here sequentially carried out by the intrinsic content of formation, each embodiment of the common usefulness of the present invention.In addition, the invention is not restricted to this.

＜system consists of 〉

Fig. 2 is the ultimate system pie graph of the common video disk recording device of each embodiment of aftermentioned.

As shown in Figure 2, this video disk recording device is made of following device: bus 100, host CPU 101, RAM102, ROM103, user interface 104, system clock 105, CD 106, pick-up (pickup) 107, (Error Correcting Coding: Error Correction of Coding) code translator 108 for ECC, ECC scrambler 109, audio reproducing impact damper 110, rabbit impact damper 111, remove multiplexer 112, multiplexer 113, record impact damper 114, tone decoder 115, video decoder 116, audio coder 117, video encoder 118, audio recording impact damper 119, videograph impact damper 120, remove multiplexer 121, post-recorded data reproduction impact damper 122, cutting treatmenting part 123 (being divided into the parts of AV data and partial association data), dummy section management department 125 (guaranteeing the parts of continuum), management information processing section 126 and not shown video camera, microphone, loudspeaker, display etc.In addition, pick-up 107, ECC code translator 108, ECC scrambler 109 consists of drivers 127 (parts of continuous recording part AV data and partial association data, with the parts of file system management information recording/on described recording medium).

By bus 100 come main control system CPU101, remove multiplexer 112, multiplexer 113, pick-up 107, tone decoder 115, video decoder 116, audio coder 117, video encoder 118.

During reproduction, 108 pairs of data of reading from CD 106 by pick-up 107 of ECC code translator are carried out error correction.Data after 126 pairs of error correction of management information processing section are processed file system management information, send to multiplexer 112 or remove multiplexer 121.

According to from the indication of removing multiplexer 112 or host CPU 101, corresponding to voice data or video data, with the data allocations of reading to audio reproducing with impact damper 110 and rabbit with impact damper 111.Equally, go multiplexer 121 according to the indication from host CPU 101, the data of reading are sent to post-recorded data reproduction impact damper 122.

Tone decoder 115 uses impact damper 110 and post-recorded data reproduction with sense data the impact damper 122 according to the indication from host CPU 101 from audio reproducing, and the data of reading are carried out decoding.Equally, video decoder 116 with sense data the impact damper 111, is carried out decoding to the data of reading from rabbit according to the indication from host CPU 101.

On the other hand, when record, will be sent to respectively by the data behind audio coder 117 and video encoder 118 compressed encodings audio recording impact damper 119 and videograph impact damper 120.Multiplexer 113 is according to the indication from host CPU 101, from audio recording with impact damper 119 and videograph with sense data the impact damper 120, it is multiplexed that the data of reading are carried out AV, and send to cutting treatmenting part 123.Cutting treatmenting part 123 is cut apart the data of AV after multiplexed by each predetermined distance, sends to record with impact damper 114.At this moment, dummy section management department 125 guarantees the continuum for record data, and 109 pairs of ECC scramblers add error correcting code from record with the AV multiplexed data of reading the impact damper 114, is recorded in the continuum that the quilt of CD 106 guarantees by pick-up 107.

In the coded system of voice data, use respectively the MPEG-1 Layer-II by ISO/IEC 13818-3 regulation, in the coded system of video data, use the MPEG-2 by ISO/IEC 13818-2 regulation.CD 106 is the rewritable CDs such as DVD-RAM, and 2048 bytes are made as 1 sector, for error correction, consists of the ECC piece by 16 sectors.

＜file system 〉

With Fig. 3 (a), Fig. 3 (b) UDF (Universal Disk Format: universal disc format) as the file system format that uses in the explanation of the present invention is described.The example that consists of with the directories/files shown in the UDF record diagram 3 (a) shown in Fig. 3 (b).

(Anchor Volume Descriptor Pointer: anchor formula Volume Descriptor pointer) 602 entrances (entry point) that are equivalent to for the management information of exploring UDF are recorded in the 256th sector, a N sector or N-256 sector (N is the largest logical sector numbers) to AVDP among the figure usually.(Volume Descriptor Sequence: the Volume Descriptor sequence) 601 records are about the management information as the volume (Volume) in the zone of UDF management for VDS.Generally there is one in volume in a dish, wherein generally comprise a subregion (partition).In subregion, there is a FSD (File Set Descriptor: set of file descriptor) 603.Positional information in the subregion is represented by the logical block sequence number that is equivalent to apart from the sector numbers of partition start.In addition, a logical block is corresponding to a sector.In addition, although not shown in each subregion, exist expression whether to file allocation be called as the form of each logical block of Space Bitmap.

FSD603 comprises as the positional information of the FE604 of the File Entry (FE) of root directory (be made of logical block sequence number and logical block number, be called " extent ").The set of FE management extent by rewriting, appending or delete extent, can change the order of the real data of configuration file, or data inserting, or the deletion data.

The zone 605 of the set of FE604 managed storage File Identifier Descriptor (FID), the file under this FID storage root directory or the title of catalogue etc.FID611, the FID612 of zone in 605 comprises respectively the filename of management document 621, file 622 or the FE606 of extent set, the positional information of FE608.FE606 is with the zone of the real data of configuration file 621, and namely zone 607, regional 610 is managed as extent.At this moment, for the real data to file 621 conducts interviews, as long as link by AVDP602, VDS 601, FSD603, FE604, FID611, FE606,607,610 order.

[embodiment 1]

With Fig. 1 and Fig. 4-Figure 18 the 1st embodiment of the present invention is described.

＜file, catalogue consist of 〉

Illustrate that with Fig. 4 the file of present embodiment 1, catalogue consist of.The data that will be referred to as shown in Figure 4 present embodiment 1 are stored in 5 kinds of files.

Primary flow file (SHRP001.M2P) is the file of recording to make by 1 time, is MPEG-2PS (Program Stream: program stream) form.Post-recorded data file (SHRP0001.PRE) is be used to guaranteeing post-recorded with the zone and storing the file of post-recorded data.Primary flow management information file (SHRP0001.0MI) be storage about the primary flow file the time meta-address corresponding informance and attribute information and about the attribute information of post-recorded data file or with the file of the correspondence relationship information of primary flow file, a primary flow file has this primary flow management information file.Program information file, PIF (SHRP0001.PGM) is that the storage appointment is by the file of the information in which interval of the above-mentioned stream of which sequential reproduction or data.In addition, program is equivalent to a content, is the object that the user indicates reproduction.

When recording, again make above-mentioned 4 files.These files are owing to concerning between the expression file, so become the content outside the escape character of filename common.When the audio frequency post-recorded, the post-recorded voice data is write on the assigned position in the post-recorded data file again, and in post-recorded data management information file, also reflect this situation.And the post-recorded voice data that appends all changes with the program information file, PIF that becomes the reproduction object.

In addition, when non-destruction editor, production process message file again, with regard to the interval of wanting to reproduce, the record management interval thinking the filename of the primary flow management information file of rendering data or post-recorded data management information and want to reproduce in order.In addition, the data formation of each file is described in the back.

The form of＜AV stream 〉

The formation of the AV stream that uses in the present embodiment 1 is described with Fig. 5.

At first, with Fig. 5 the primary flow file is described.The content of primary flow file is the MPEG-2PS form, and shown in Fig. 5 (a), the Continuous Unit (CU) individual by integer consists of.CU is the upper continuous recording unit of dish.How the CU that the length of CU is configured to no matter will to consist of AV stream is configured on the dish, all guarantee seamless-reproduced (in the reproduction can without suspending ground reproduced image or sound) or real-time post-recorded (on one side the video of seamless-reproduced post-recorded object, on one side record audio).This establishing method as described later.

CU is shown in Fig. 5 (b), and a Video Unit (VU) consists of by integer.VU is the unit that can reproduce separately, can consist of the entrance when reproducing.VU is made of the individual audio pack (A#1-A#K) of integer, video packets (V#1-V#L) shown in Fig. 5 (c), and is multiplexed by AV respectively, so that the decoder block of MPEG-2PS form is not shown one's slip.Make the size of bag consistent with sector size, in order to when reading dish, do not read unnecessary data.In addition, make by the video data of group bag to be consisted of by 1-2 GOP, make a voice data group bag integer AAU (Audio Access Unit: the audio frequency access unit).

In addition, GOP is the compression of images unit in the MPEG-2 video standard, is made of a plurality of frame of video (typically being about 15 frames).AAU is the sound compression unit in the MPEG-1 Layer-II standard, is made of the acoustic wave form sampled point of 1152 points.Be in the situation of 48kHz in sample frequency, the recovery time of each AAU becomes 0.024 second.In addition, in order to reproduce so that VU unit is independent, the beginning of the video data in VU arranges Sequence Header (SH).

In addition, the VU at CU end is filled by the bag that (padding) grouping is filled in storage, so that CU is made of the individual ECC piece of integer.

＜post-recorded data file 〉

The formation of post-recorded data file is described with Fig. 6.The post-recorded data file is made of the Continuous Area (CA) of integer as shown in Figure 6.A CU in the above-mentioned primary flow file exists corresponding to a CA, and record is about the post-recorded data of the rendering data among the corresponding CU in CA.For example, in CA#n record want with the primary flow file in the post-recorded voice data of CU#n reproduced in synchronization.CA is made of the individual ECC piece of integer.

The post-recorded data file is the same with the primary flow file, is the MPEG-2PS form, and when initially recording, grouping filled in record, after post-recorded, again writes the bag of having stored the post-recorded data.SCR in the packet header of the bag that again writes (System Clock Reference: system clock reference) with packets headers in PTS (Presentation Time Stamp: expression time mark) and primary flow file in SCR and the PTS of corresponding audio pack consistent.Thus, by again write the corresponding audio pack among the CU by the audio pack among the CA, can be replaced relatively easily by the post-recorded data audio frequency of primary flow.

＜to the configuration of coiling 〉

Illustrate that with Fig. 1 (a), (b) primary flow file and post-recorded data file are to the configuration of coiling.The primary flow file (SHRP0001.M2P) that corresponds to each other shown in Fig. 1 (a) is recorded as with post-recorded data file (SHRP0001.PRE) and disposed corresponding CA (Fig. 1 (b)) in CD 106 before CU.

Thus because the data that will carry out reproduced in synchronization each other (CA and CU) be arranged on the dish near, so the movement of the pick-up when reproducing becomes Min., as described later, when reproducing non-destruction edited result, suspend the possibility of reproducing and reduce.In addition, by being configured to before CU, to read the little CA of size, thereby can suppress the buffer-stored tolerance that reproduced in synchronization is used.

＜CU unit determines method 〉

Definite method of CU recovery time is described with Fig. 7 and Fig. 8.Determine in the method at this, interchangeability in order to ensure equipment room, suppose to consist of the device (parametric device model) and the post-recorded algorithm (with reference to the post-recorded algorithm) that consists of benchmark of benchmark, afterwards, determine the CU recovery time, when using these devices and algorithm to carry out post-recorded with box lunch, seamless-reproducedly can not show one's slip.

At first, with Fig. 7 the parametric device model is described.The parametric device model by 1 pick-up (not shown) and the ECC scrambler that links to each other with this pick-up, code translator 501, track (track) impact damper 502, go multiplexer 503, post-recorded to consist of with impact damper 504, audio coder 509, video buffer 505, audio buffer 506, video decoder 507, tone decoder 508.

In above-mentioned parametric device model, because pick-up is one, so reproduce with data and to dish 500 record post-recorded data from coiling to read 500 with the time-sharing format execution.When reproducing when using data from coiling to read 500, also comprise and read CA.The ECC piece (CA piece) that will comprise the CA that reads sends to post-recorded impact damper 504 from track buffer 502.

Audio coder 509 is exported post-recorded data to post-recorded with impact damper 504 with the AAU cycle.By this output, again write the corresponding CA piece in the post-recorded usefulness impact damper 504.Post-recorded is carried out by the CA piece is recorded in the regulation ECC piece with the record of data.

Here, will to the data input speed of ECC scrambler 501 input video frame data and from ECC code translator 501 output data output speed be made as Rs.In addition, will read and maximum time of stopping to record is made as Ta by access.In addition, comprise the data time before that output is read from ECC code translator 501 at first after seek time, rotation waiting time, the access in this period of in dish.In present embodiment 1, establish Rs=20Mbps, Ta=1 second.

Then, come description references post-recorded algorithm with Fig. 8.In addition, among Fig. 8 from 1. to 6. sequence number corresponding to the following describes from 1. to 6. sequence number.The summary of algorithm is as follows.

1. carry out and reproduce reading with data.

2. corresponding to N CA, i.e. in the time of the end-of-encode of the voice data of CA (N), CA (N) is carried out access.

3. CA (N) is recorded in the dish.

4. return initial read-out position.

5. read to reproduce and use data.

6. corresponding to N+1 CA, i.e. in the time of the end-of-encode of the voice data of CA (N+1), CA (N+1) is carried out access.3. the back repeat-6. action.

With regard to described parametric device model, in the described situation of carrying out post-recorded with reference to the post-recorded algorithm, if meet the following conditions, then can guarantee not have post-recorded with the underflow with track buffer 502 of overflowing of impact damper 504.

That is, with regard to regard to the CU#i of any CU in the AV stream, when the maximum recovery time being made as Te (i), will comprising and be made as maximum readout time that disjunction jumps Tr (i), will be made as Tw as the dominant record time corresponding to the CA#i of the CA of CU#

(i) time, as long as following formula (1) is set up.

Te(i)≥Tr(i)+Tw(i)…(1)

Reason is that above-mentioned formula (1) satisfies the following formula (2) as seamless-reproduced adequate condition.In addition, in following formula (2), Ta is to CA toward the required maximum access time of access multiple.

In addition, synchronously carry out the post-recorded data to the record that coils owing to finishing with the CA coding,

$\underset{i}{\mathrm{\Σ}}\mathrm{Te}\left(i\right)\≥\underset{i}{\mathrm{\Σ}}(\mathrm{Tr}\left(i\right)+\mathrm{Tw}\left(i\right))\·\·\·\left(2\right)$

So post-recorded can not accumulate with the data in the impact damper 504, there be not post-recorded overflowing with impact damper 504 yet.

Tr (i) in the formula (1) satisfies following formula (3) when respectively the maximum bit rate of the maximum bit rate in the primary flow and post-recorded audio stream being made as Ro, Ra.In addition, Rs represents input speed and the output speed of audio frame number certificate, i.e. audio bit speed.

Tr(i)＝Te(i)×Ro/Rs+Te(i)×Ra/Rs+Ta …(3)

The 1st, the 2nd on the right of following formula (3) represents respectively VU readout time and the CA readout time among the CU.The 3rd expression in the right is based on the access time of following the disjunction jump of reading.Because the disjunction of CU in reading jumped and is 1 time to the maximum, so following formula (3), be the access time of Tr (i) expression 1 time.

In addition, Tw (i) satisfies following formula (4).

Tw(i)＝2Ta+Te(i)×Ra/Rs …(4)

Here, the 1st expression in the right of following formula (4) is to the reciprocal access time of CA.In the reciprocal access time of CA, using maximum access time Ta to be because because can adopt at an arbitrary position record of CA unit, so also consider the interior week of CU for coiling in current the reading, the CA of record object is the most peripheral of dish, and need to estimate with maximal value.

In addition, because continuous recording CA on dish as mentioned above, so can not produce access in the CA record.Thus, can shorten the time of following the CA record, as a result of, the lower limit of CU recovery time can be suppressed lower.

If with formula (3) and formula (4) substitution formula (1), found the solution by Te (i), then obtain to guarantee the condition of the Te (i) of real-time post-recorded, i.e. following formula (5).In addition, Rv represents input speed and the output speed of video requency frame data, i.e. video bits speed.

Te(i)≥(3Ta×Rs)/(Rs-Ro-2Ra)…(5)

That is, can guarantee that the CU recovery time lower limit Temin of post-recorded is as shown in the formula shown in (6).

Temin＝(3Ta×Rs)/(Rs-Ro-2Ra)…(6)

At this moment, the higher limit Temax of CU recovery time sets shown in (7).Here, Tvmax is the maximum recovery time of VU.

Temax＝(3Ta×Rs)/(Rs-Ro-2Ra)+Tvmax …(7)

The higher limit of setting the CU recovery time is because can estimate the post-recorded sound delay memory-aided maximum required with the reproduced in synchronization of common sound, and guarantees to reproduce interchangeability.In addition, in present embodiment 1, though set multiplexed interval lower limit Temin corresponding to audio bit speed Ra and video bits speed Rv, also can irrespectively set constant lower limit with bit rate.But this value must be based on the bit rate of maximum.

In addition, if the CU recovery time is satisfied above-mentioned restriction, then the VU recovery time in the stream can be fixed also and can change.

In addition, in present embodiment 1, suppose that asynchronous execution disjunction jump and pick-up are to the movement of the CU in past.Its reason is: asynchronous execution is compared with the situation of synchronous execution, owing to be used for carrying out the condition strict (suspend and reproduce with long during the data reading) of real-time post-recorded, as long as so can non-synchronously carry out real-time post-recorded, even if then synchronously also can, can improve the degree of freedom of installation.

Therefore, movement from pick-up to the CU in past that also can be take synchronous execution disjunction jump and is set Temin as prerequisite.At this moment, as long as the 2nd on the right of the formula of removing (3).

＜management information file form 〉

With Fig. 9 to Figure 15 management information file form of the present invention is described.

At first, the primary flow management information file is described.The primary flow management information file is made of about the p_attribute () of the attribute information of the post-recorded data file integral body of this document management and the storage continuous_area_table () about the information of CA about the video_unit_table () of the information of VU, storage about the o_attribute () of the attribute information of the primary flow file integral body of this document management, storage storage as shown in Figure 9.

Post-recorded video_unit_table () is shown in Figure 10 (a), by number_of_video_unit and the video_unit_info () formation of storage about the information of each VU of expression VU quantity.

Video_unit_info () is shown in Figure 10 (b), and the VU_PTS about the PTS (PresentationTime Stamp) of the beginning display frame of VU_flags, the store predetermined VU of the various attribute informations of regulation VU consists of with the VU_PN of storage apart from the relative bag sequence number of file beginning by expression.Can specify position corresponding to the VU of specific PTS by VU_PTS and VU_PN.That is, VU_PTS represents the reproduction zero hour of primary flow (AV data).

VU_flags () comprises sign first_unit_flag shown in Figure 11 (a).First_unit_flag is the information of 1 bit, and shown in Figure 11 (b), in the situation of 0b, the VU of expression management is not the beginning of CU, and in the situation of 1b, the VU of expression management is the beginning of CU.

Continuous_area_table () is shown in Figure 12 (a), by number_of_continuous_area and the continuous_area_info () formation of storage about the information of each CA of expression CA quantity.

Continuous_area_info () is made of with the CA_PN of storage apart from the relative bag sequence number of file beginning corresponding to the CA_PTS of the PTS (Presentation Time Stamp) of the beginning display frame of the CU of regulation CA CA_flags, the storage of expression about the various attribute informations of regulation CA shown in Figure 12 (b).Can specify position corresponding to the CA of the specific PTS in the primary flow, CA_PN to represent to record the positional information of the 1st continuum of CA and CU, in other words, the beginning positional information of expression CA by CA_PTS and CA_PN.

CA_flags () comprises sign placement_flag shown in Figure 13 (a).Placement_flag is the information of 1 bit, shown in Figure 13 (b), in the situation of 0b, the CA of expression management is not before (reproduced in synchronization) CU of correspondence, in the situation of 1b, the CA of expression management is before (reproduced in synchronization) CU of correspondence.

By with reference to this sign, know and suspend the possibility of reproducing when reproducing non-destruction edited result.That is, if this sign is 0b, then produce as can be known the tracking to CA, it is higher to suspend the possibility of reproducing.

In addition, omission is to the explanation of o_attribute () and p_attribute ().

Last read-me message file.Program information file, PIF as shown in figure 14, the scene_table () about the information of each scene of configuration program consists of by the pg_attribute () of the attribute information of storage program information integral body and storage.

Scene_table () is shown in Figure 15 (a), by number_of_scene and the scene_info () formation of storage about the information of each scene of storage scenarios number.Scene_info () is shown in Figure 15 (b), and the sc_duration that is comprised the recovery time of the sc_start_PTS of sc_filename, the regulation scene is reproduced in storage from the somewhere of this primary flow information of filename of primary flow management information file of primary flow file of regulation scene and store predetermined scene by storage administration consists of.

Processing during＜record 〉

Below, with reference to the process flow diagram of Figure 16 processing when recording from user's indication is described.If this moment, the AV stream of record was fixing correspondence stream of bit rate Ra=256kbps, the VU recovery time of bit rate Ro=12Mbps, audio frequency.In addition, establish the management information of file system is read on the RAM.

At first, determine the formation of stream or the formation (S701) of continuum.When establishing 1VU and consisted of by the 1GOP15 frame, by substitution Rs=20Mbps in formula (6), formula (7), Ta=1 second, Rv=12Mbps, Ra=256kbps, condition that Tvmax=is about 0.5 second, the scope that obtains Te (i) for more than or equal to 3 seconds less than or equal to 4 seconds.Tvmax=satisfy this condition under about 0.5 second be Te (i)=3 second the time, in per 6 VU, insert CA.

The area size of the CA of this moment considers to add packet header in the voice data of 3 seconds sizes or packets headers is determined.As mentioned above, the processing of above-mentioned S701 is equivalent to will become as the primary flow of AV data the 1st step of part AV data (CU: i.e. 6 VU) and partial association data (CA) with post-recorded Data Segmentation as its associated data by each predetermined distance.

But explore the dummy section of 6 VU of continuous recording and 1 CA with reference to the Space Bitmap on the RAM102.If do not exist, then end to record, allow the user know and can not record (S702).

Then, start respectively audio coder 117, video encoder 118 (S703).In addition, check the data (S704) that in recording with impact damper, whether accumulated more than or equal to 1ECC block size (32KB), during accumulating, repeat the processing from S705 to S708.

That is, if accumulated data more than or equal to the 1ECC block size in impact damper at record, then follow the empty situation (S705) of coming the ECC piece on the dish of investigation records with reference to the Space Bitmap on the RAM.If empty, the data that then will record with the 1ECC block size in the impact damper 111 are recorded in (S706) in the dish.If not empty, then explore the continuous dummy section (S707) can record 9 VU and CA, pick-up is moved to the beginning (S708) of this dummy section, the data that record with the 1ECC block size in the impact damper 111 are recorded in (S706) in the dish.

As mentioned above, the processing of above-mentioned S704 is equivalent to guarantee the continuum be used to recording a series of part AV data and partial association data, i.e. the 2nd step of the 1st continuum.In addition, the processing of above-mentioned S706 is equivalent to the 3rd step of the described part AV data of continuous recording and described partial association data in the 1st continuum.

On the other hand, if record with the data that do not accumulate in the impact damper 111 more than or equal to the 1ECC block size, then whether inspection has indicated end of record (EOR) (S709), if end of record (EOR) not then moves to S704.

At the S709 indicating in the situation of end of record (EOR), carry out following the processing.At first, to the data of record with not enough 32KB in the impact damper, in end additional virtual data, become 32KB (S710).Then, these data are recorded in dish upper (S711-S714).In addition, the processing of above-mentioned 711-S714 is the processing the same with the processing of S705-S708.

And, with being recorded in respectively in primary flow management information file and the post-recorded data management information file (S715) about the management information of primary flow with about the management information of post-recorded data on the RAM102.In addition, with file system management information recording/(S716) in CD 106.In addition, the file system management information of this moment also can constitute CA and CU are processed into different files.

As mentioned above, the processing of above-mentioned S716 is equivalent to the 4th step of log file system management messages on described recording medium, this document system management messages be for described part AV data and described partial association data respectively as different file managements in, management is processed into information that different files use with described partial association data from described the 1st continuum with described part AV data.

In addition, the processing of above-mentioned S715 is equivalent to the 5th step, with reproduction zero hour of described part AV data, be recorded in the described recording medium with the corresponding informance of the positional information of described the 1st continuum.

The action of the audio coder 117, video encoder 118 and the multiplexer 113 that walk abreast with above processing is described.The result of each encoder encodes is sent to audio recording impact damper 119 and videograph impact damper 120.Multiplexer 113 becomes MPEG-2PS with these data multiplexs, and is stored in record with in the impact damper 114.

The data of 1VU size are sent to record impact damper 114, and if this VU is the individual VU of the 9th * i (i is the integer more than or equal to 0), the CA that then will have first above-mentioned size sends to record impact damper 111.

And to can the encode data of 1VU size of host CPU 101 notice, host CPU 101 is according to beginning PTS, the bag number of VU and consist of the bag number of CA, upgrades about the management information of the primary flow on the RAM102 with about the management information of post-recorded data.

Processing during＜reproduction 〉

With reference to the process flow diagram of Figure 17 illustrate from the user to executed the program indication of the post-recorded processing when reproducing.Here, establishing the program information file, PIF that will consist of the reproduction object is read among the RAM102.

At first, with reference to the sc_filename of the scene_info () in the program information file, PIF, open primary flow file and the post-recorded data file of (open) this program reference.Simultaneously, read in the primary flow management information file (S901) of these files of management.

Then, the scene sequence number is set to 0 (S902), the scene sequence number less than the number_of_scene among the scene_table () during (S903), hold with reference within the scene_info corresponding to following scene sequence number, carry out scene reproduction described later (S904), the scene sequence number that finishes is added 1 (S905).

Below, with Figure 18 light field scape reproduction processes.At first, with reference to corresponding to the sc_filename among the scene_info (), be read into the video_unit_table () of the original management information among the RAM102, explore following and the video_unit_info () with maximum VU_PTS of sc_start_PTS (S801).The VU sequence number of the scene that begins to reproduce is obtained in the processing of above-mentioned S801.In addition, in video_unit_table (), the order of video_unit_info () is called the VU sequence number.

Then, with reference to continuous_area_table (), explore following and the continuous_area_info () with maximum CA_PTS of sc_start_PTS (S802).The address corresponding to the CA of the scene that begins to reproduce is obtained in the processing of above-mentioned S802.And, from the post-recorded data file, read from by the bag of wherein CA_PN appointment to by the bag (S803) before the bag of the CA_PN appointment of next continuous_area_info ().

Then, reference is obtained the address (S804) of VU corresponding to the VU_PN of the video_unit_info () of current VU sequence number, according to this address, reads VU (S805) from the primary flow file.Then, judge whether that this scene finishes (S806).Particularly, if the recovery time of current scene is more than the sc_duration among the scene_info (), then finish this scene.

If the reproduction of scene does not finish, then then the VU sequence number is added 1 (S807), by the first_unit_flag among the reference video_unit_info (), judge the whether beginning (S808) of CU of VU of this video_unit_info () management.

At this moment, if first_unit_flag is 1, then judge the whether beginning of CU of VU of this video_unit_info () management, and obtain corresponding CA address (S809) by above-mentioned steps, from the post-recorded data file, read CA (S810).On the other hand, if first_unit_flag is 0, judge that then the VU of this video_unit_info () management is not the beginning of CU, repeat the processing of S804-S808.

Above-mentioned stream is parallel with data with reading from CD 106, and following execution decoding is processed.At first, the VU that reads is sent to multiplexer 112, taking-up video PES divides into groups and audio frequency PES grouping, and video PES grouping is sent to rabbit with impact damper 111, and audio frequency PES is divided into groups to send to audio reproducing impact damper 110.

Go multiplexer 112 from packet header, to take out SCR, update system piece 105.Video decoder 116 and tone decoder 115 system block 105 with attached in the consistent moment of the time stamp of PES packets headers, carry out decoding or output.

In present embodiment 1, since the CU of storage primary flow and storage carry out the CA of the post-recorded data of reproduced in synchronization be positioned at dish upward physics near, even if so scene near the VU the CU terminal, as long as the stand-by time of the data reading that is produced by the scene from CA to VU is also a bit.

On the contrary, in near the situation the primary flow that is not configured in reproduced in synchronization post-recorded data, the reading of the post-recorded data in the beginning part of scene, and the reading of primary flow between the seek time that produces the poorest be interior week to extend to most peripheral from dish.Therefore, compare with present embodiment, it is higher to suspend the possibility of reproducing between scene.

Processing during＜post-recorded 〉

Then, processing when having indicated post-recorded from the user is described.Because the processing during post-recorded is additional several processing in the processing when above-mentioned reproduction, so the difference part only is described.

At first, in order to record the post-recorded data, start simultaneously audio coder 117 with the beginning scene reproduction, and the form that the result of the post-recorded data of will encoding divides into groups with PES sends to audio recording impact damper 119.113 groups of bag PES groupings of multiplexer, and send to record impact damper 114.At this moment, make the PTS of the SCR in packet header and packets headers consistent with primary flow.

Bag at the PTS with the scope that surpasses the current CU that is deciphering arrives record with the moment of impact damper 114, will be present in record and be recorded in the post-recorded data file with the row of the bag in the impact damper 114.By from the PTS of the current CU that is deciphering with reference to continuous_area_table (), obtain the record object the CA position.

Meet with when CA records in the situation of fault, the CA in the discarded record is recorded in CA in other zone again.This is because the posting field of CA in the record hinders for some reason and reduces, and the data of the CU recovery time size of correspondence can not be recorded among the CA.At this moment, change to 0 by the placement_flag among the continuous_area_info () that will manage this CA, before the CU of correspondence, do not have as can be known CA.Certainly, the extent of discarded CA is replaced as the extent of the CA that again makes in the file system management information.

Thus, when non-destruction editor or when reproducing non-destruction edited result, only by with reference to the i.e. interval of continuous recording CA and CU not as can be known of above-mentioned placement_flag, can pass on the possibility that reproduction is suspended in this interval higher to the user in advance.In addition, can being configured to from behind, continuous recording does not rely on this sign to come continuous recording CA and CU yet again.

The variation of＜embodiment 1 〉

In present embodiment 1, though equally with the primary flow file be recorded in the post-recorded data file with the MPEG-2PS form, also consider Elementary Stream, i.e. group bag or packetizing ground record.Thus, when rewriting the post-recorded data of a CA part only, do not need from bag, to extract out AAU rear substitution AAU and again organize the formality such as packetize.

In addition, in present embodiment 1, though in CA recording audio data, also can record the data of other kind.For example, also can record the graph data that shows on the video that is overlapped in the primary flow.

In addition, in present embodiment 1, can be recorded as an AAU a plurality of bags that jump, not jump but also can be constrained to.Thus, when rewriting the post-recorded data of a CA part only, comprise the bag of wanting the AAU that rewrites as long as again write.

In addition, in present embodiment 1, when in post-recorded, in CA, detect in the situation of fault, be recorded in other zone behind discarded this CA.But supposing has fault, and considers the surplus of reply fault when initially recording, and determines the size of CA, and detects when post-recorded in the situation of fault, also can be recorded in the next position among this CA.Thus, but continuous recording CA and CU.

In addition, in present embodiment 1, because make as the CA of different files correspondingly with CU, so can calculate according to the time stamp of the beginning of the data among the CU beginning address of CU and CA, certainly, as long as corresponding, no matter be which kind of manifestation mode all can.

In addition, in present embodiment 1, used MPEG-2PS, even if but use MPEG-2TS can realize too.

[embodiment 2]

With Figure 19 the 2nd embodiment of the present invention is described.

Present embodiment 2 is with the difference of embodiment 1: dispose continuously a plurality of data of carrying out reproduced in synchronization in the embodiment 1 on recording medium, each data are managed as different files, on the contrary, in present embodiment 2, although being each data, prerequisite is positioned on the identical recovery time axle, but do not reproduce simultaneously, reproduce but switch.

Particularly, suppose to be called polygonal (multiangle) function among the DVD-Video, can in reproduction, switch the function from the image of a plurality of angles in the same time axle.

In addition, the operation of recording of present embodiment 2 only answers the primary flow of reproduced in synchronization and the relation of post-recorded data to be replaced as the relation that is positioned at two kinds of primary flows on the same reproduction time shaft in the operation of recording with above-mentioned embodiment 1, and the action of essence is identical.

＜file consists of 〉

With MPEG-2PS form multiplex video, voice data, press each angle recordings in different files.In the example of Figure 19 (a), will be recorded in from the data of the 1st angle among the ANGL0001.M2P, will be recorded among the ANGL0002.M2P from the data of the 2nd angle.

＜to the configuration of coiling 〉

Shown in Figure 19 (b), to be divided into partial data 2021,2022,2023 as the ANGL0001.M2P from the data of the 1st angle, and will be divided into partial data 2011,2012,2013 as the ANGL0002.M2P from the data of the 2nd angle, and submit interworking at dish 2001 and put.In addition, because it is the same with the data of multiple angles configuration among the DVD-Video to cut apart definite method of unit, so description thereof is omitted.

Thus, can in the response that realizes the angle switching the same with the multi-angle switching among the DVD-Video, reproduce each data file by the corresponding code translator of general MPEG-2PS.

[embodiment 3]

With Figure 21-Figure 28 the 3rd embodiment of the present invention is described.

Present embodiment 3 is with the difference of embodiment 1: in embodiment 1, manage post-recorded with regional by a file (being the post-recorded data file (SHRP0001.PRE) among Fig. 4), on the contrary, in present embodiment 3, order is used for guaranteeing that the file of dummy section is different from the file that is used for each AV data of record.In addition, because present embodiment 3 is similar with embodiment 1, so difference only is described.

＜file, catalogue consist of 〉

The file of present embodiment shown in Figure 21 3, catalogue consist of.In this document, catalogue consist of, consist of (with reference to Fig. 4) with respect to the file in the embodiment 1, catalogue, appended the reservation of post-recorded zone file (SHRP0001.RSV), post-recorded data management information file (SHRP0001.PMI) and graphic file (SHRP0001.PNG).

Post-recorded zone reservation file (SHRP0001.RSV) is for the file of reservation post-recorded with the zone.Post-recorded data management information file (SHRP0001.PMI) is the management information corresponding to the post-recorded data file.Graphic file (SHRP0001.PNG) is the file that memory overlay is shown in the graph data on the video.In addition, the file of the same title in program information file, PIF (SHRP0001.PGM), primary flow management information file (SHRP0001.OMI), primary flow file (SHRP0001.M2P) and the embodiment 1 is identical.

When recording, to a post-recorded zone reservation of 1 primary flow file record file.1 post-recorded data file is made a post-recorded data management information file.Graphic file is the file of editing to append by non-destruction after recording, and memory overlay is shown in title on the video or the image of handwriting.Use PNG (Portable Network Graphics: the portable network picture) in the image storage format in graphic file.

In addition, post-recorded data file (SHRP0001.PRE) is different from embodiment 1, generates in advance by carrying out post-recorded.That is, when recording, record post-recorded zone reservation file replaces the post-recorded data file in the embodiment 1.

The form of＜AV stream 〉

The form of AV stream is the same with the formation of the embodiment 1 that illustrates with reference to Fig. 5.

＜post-recorded zone reservation file 〉

Post-recorded zone reservation file adopts the formation the same with post-recorded data file shown in Figure 6 in the embodiment 1.That is, the post-recorded zone is preengage file and is made of the individual Continuous Area (CA) of integer, and a CA exists corresponding to a CU in the primary flow file, guarantees for recording the afterwards zone of phase record data of corresponding CU.But, because the CA here is used for after all guaranteeing the zone that the AV data of different reproduction object are so the data of content can be arbitrary datas.

＜to the configuration of coiling 〉

Illustrate in the present embodiment 3 each file to the dish on configuration mode.File configuration rear, that do not carry out the state (namely not making the state of post-recorded data file) of post-recorded is recorded in Figure 22 (a)-22 (b) expression.The primary flow file (SHRP0001.M2P) that corresponds to each other shown in Figure 22 (a) and post-recorded zone reservation file (SHRP0001.RSV) is recorded as in CD 106 CA (Figure 22 (b)) corresponding to configuration before CU.

Then, with behind Figure 23 (a)-23 (b) additional record has been described audio frequency and the figure, the configuration on the dish of post-recorded zone reservation file, post-recorded data file and graphic file.The graphic file (SHRP0001.PNG) of additional record shown in Figure 23 (a) and the formation of post-recorded data file (SHRP0001.PRE).Graphic file store graphics data IMG.The storage of post-recorded data file corresponds respectively to CU#n-1, CU#n, the post-recorded voice data PR#1 of CU#n+1, PR#2, the PR#3 in the primary flow file shown in Figure 22 (a).

The form shown in Figure 23 (b) of pressing with the data configuration of above-mentioned IMG and PR in CD 106.That is, in Figure 22 (b), in the zone of being guaranteed by CA#n-1, in the zone of being guaranteed by PR#1, CA#n, in the zone of being guaranteed by PR#2, CA#n+1, configuration PR#3.In addition, arrangement plan graphic data IMG in the zone of being guaranteed by CA#n+1.

Like this, by the data of configuration IMG and PR in the zone of being guaranteed by CA, thereby dwindle CA#n-1, the CA#n that consists of post-recorded zone reservation file (SHRP0001.RSV), the area size of CA#n+1.The extent in the zone by each CA in the change management file system management information realizes that this dwindles.

Like this, by importing the post-recorded zone reservation file as the vacant file in management post-recorded zone, append from behind easily several data.In addition, by graph data is stored in the different files from the post-recorded voice data, thus can be according to other program only with reference to graph data, and increase dirigibility.

＜management information file form 〉

The form of primary flow management information file is identical with embodiment 1, and description thereof is omitted here.Form and the primary flow management information file in the embodiment 1 of post-recorded data management information file are basic identical, but difference is not exist p_attribute () and continuous_area_table ().

Then, the formation of program information file, PIF shown in Figure 24.The difference of the program information file, PIF of present embodiment 3 and embodiment 1 (with reference to Figure 14) is: append and manage respectively the voice data that appends and subaudio_table () and the graphics_table () of graph data after recording.

Subaudio_table () is shown in Figure 25 (a), by number_of_subaudio and the subaudio_info () formation of storage about the information of each voice data of expression voice data number.Subaudio_info () shown in Figure 25 (b), by the SA_flags of the various attributes of the SA_filename of the filename of the post-recorded data management information file of storage administration regulation voice data, administrative provisions voice data and respectively the reproduction in the representation program begin regularly to consist of with the SA_start_time and the SA_duration that reproduce the continuation time.

On the other hand, graphics_table () is shown in Figure 26 (a), and the graphics_info () about the information of each graphic file consists of by the number_of_graphics of the number of presentation graphic file and storage.Graphics_info () shown in Figure 26 (b), by the gr_flags of the various attributes of the gr_filename of the filename of store predetermined graphic file, administrative provisions graph data and respectively the reproduction in the representation program begin regularly to consist of with the gr_start_time and the gr_duration that reproduce the continuation time.

SA_flags has identical formation with gr_flags, shown in Figure 27 (a), comprises sign interleave_flag.Interleave_flag is the information of 1 bit, shown in Figure 27 (b), in the situation of 0b, the voice data of expression management or graphic file be not before (reproduced in synchronization) CU of correspondence, in the situation of 1b, be illustrated in before corresponding (reproduced in synchronization) CU.By with reference to this sign, know and suspend the possibility of reproducing when reproducing non-destruction edited result.That is, if this is masked as 0b, then produce as can be known the tracking to CA, it is high to suspend the possibility of reproducing.

＜CU unit determines method 〉

CU unit determines that method is the same with method with reference to the embodiment 1 of Fig. 7 and Fig. 8 explanation.

Processing during＜record 〉

Processing during record is the same with the processing of the embodiment 1 that illustrates with reference to Figure 16.

Processing during＜reproduction 〉

Below, illustrate from the user program of executed post-recorded has been indicated processing when reproducing.Because the same with reference to flow process Figure 17 explanation in basic procedure and the embodiment 1, so description thereof is omitted to the part of execution same treatment.But, because in the reproduction processes of present embodiment 3, it is different from embodiment 1 that scene reproduction is processed, so light field scape reproduction processes with reference to Figure 28 only.

At first, with reference to corresponding to the sc_filename among the scene_info (), read in the video_unit_table () of the original management information among the RAM102, explore following and the video_unit_info () with maximum VU_PTS of sc_start_PTS (S801).In addition, the order with the video_unit_info () among the video_unit_table () is called the VU sequence number.

Then, with reference to graphics_table () and the subaudio_table () of program information file, PIF, whether retrieval exists with the CU of the current VU of comprising is carried out the graphic file of reproduced in synchronization and voice data (S802 ').In the situation that has this graphic file and voice data, graphic file is carried out reading of this document, to voice data, with reference to the audio data management message file of this voice data of management, and carry out the reading of corresponding voice data (S803 ').

Then, reference is obtained the address (S804) of VU corresponding to the VU_PN of the video_unit_info () of current VU sequence number, comes to read VU (S805) according to this address from the primary flow file.Then, judge whether that this scene finishes (S806).Particularly, if current scene the recovery time be more than the sc_duration among the scene_info (), then this scene finishes.

If the reproduction of scene does not finish, then then the VU sequence number is increased (S807), with reference to the first_unit_flag among the video_unit_info ().At this moment, if first_unit_flag () is 1, the VU that then is judged as this video_unit_info () management is the beginning (S 808) of CU, confirm to carry out the existing of the graphic file of reproduced in synchronization and voice data (S809 ') by above-mentioned steps, in situation about existing, read (S810 ') by above-mentioned steps.

Processing during＜post-recorded 〉

Processing when explanation has been indicated post-recorded from the user.Because the processing during post-recorded is additional several processing in the processing when above-mentioned reproduction, so the difference part only is described.

At first, confirm whether to exist in the recording medium zone for post-recorded.Particularly, investigation is about the continuous_area_info () in the management information file of the stream of post-recorded object, and whether each regional size that investigation is guaranteed by post-recorded zone reservation file is the size that can record the post-recorded data.If sufficient size is arranged, then in this zone, record the post-recorded data, if without sufficient size, then in other zone, do not record the post-recorded data in the zone of being guaranteed by post-recorded zone reservation file.

Then, start simultaneously audio coder 117 with the reproduction beginning, the form that coding result is divided into groups with PES sends to audio recording impact damper 119.113 pairs of PES groupings of multiplexer package, and send to record impact damper 114.At this moment, make the PTS of the SCR in packet header and packets headers consistent with primary flow.

Arrive record with the moment of impact damper 114 at the bag with the PTS that surpasses the CU scope in the current decoding, will be present in record and be recorded in the post-recorded data file with the row of the bag in the impact damper 114.By from the PTS of the current CU that is deciphering, obtain the CA position of record object with reference to continuous_area_table ().In the zone of being guaranteed by CA, the post-recorded data are recorded in the post-recorded data file.

In the moment that post-recorded finishes, carry out following processing.Making is corresponding to the post-recorded data management file of the post-recorded data file of record.At this moment, each CU is made a video_unit_info ().

Then, the subaudio_table in the program information file, PIF appends entrance.At this moment, if the post-recorded data are recorded in the zone of being guaranteed by post-recorded zone reservation file, then in order to represent this situation, the interleave_flag of SA_flags () is arranged to 1.If not, then arrange 0.

In addition, with regard to post-recorded zone reservation file, from the management object of file, remove the zone of having recorded the post-recorded data.That is, reduce size.And, only reduce the CA_PN corresponding to each entrance among the continuous_area_table () of this part.Thus, when reference continuous_area_info (), can be only after each CA record data.

The processing of＜graph data additional hours 〉

Processing when explanation is indicated the additional overlapping graph data that is shown on the video from the user.At first, whether investigation exists the zone for the file of record store graphics data.Particularly, investigation is about the continuous_area_info () in the management information file of the stream of graph data extra objects, investigation in the CA corresponding to the CU that comprises the frame of video that begins overlapping display graphics data, but whether have the zone of recording geometry data.

If but recording geometry data among the above-mentioned CA then are recorded in this zone, and the same when finishing with post-recorded, the zone of RR release record graph data from post-recorded zone reservation file.Only reduce the CA_PN corresponding to the follow-up entrance among the continuous_area_info () that discharges size.In addition, append the entrance of a graphics_info () to the gaphics_table () of program information file, PIF, the interleave_flag of the gr_flags () in this entrance is arranged to 1.At this moment, by recording geometry data on the position that approaches with the video data that reproduces simultaneously on the dish, do not need thus for the tracking of reading graph data when the rabbit.Therefore, can suppress the time-out of the rabbit that tracking causes or power consumption etc.

On the other hand, if can not the recording geometry data among the above-mentioned CA, then with this graphic documentation in other zone.In addition, append the entrance of a graphics_info () to the graphics_table () of program information file, PIF, and the interleave_flag of the gr_flags () in this entrance is arranged to 0.By indicating with reference to this when reproducing, can before rabbit, allow the user know that also not producing rabbit in rabbit suspends.

The variation of＜embodiment 3 〉

In present embodiment 3, additional record graphic file or post-recorded data file after recording, certainly, also can be when recording record.Even if in this case, also graphic file or post-recorded data documents disposal can be become and video file file independently, video file is general MPEG-2PS file, and needn't tracking when reproduced in synchronization.

In addition, in present embodiment 3, in graphic file, use the PNG file layout, but certainly also can use other file layouts such as JPEG.

[embodiment 4]

With Figure 29-Figure 30 the 4th embodiment of the present invention is described.The position of present embodiment 4 is additional to be the change that configuration and CU unit to dish in the embodiment 1 determine method.Therefore, because part in addition is identical, so difference only is described.

＜file, catalogue consist of 〉

Since the same with embodiment 1, so description thereof is omitted.

The form of＜AV stream 〉

Except following point, the same with embodiment 1.Be in the present embodiment also can discontinuous record CU with the difference of embodiment 1.

＜post-recorded data file 〉

Since the same with embodiment 1, so description thereof is omitted.

＜to the configuration of coiling 〉

Illustrate that with Figure 29 primary flow file and post-recorded data file are to the configuration of coiling.The primary flow file (SHRP0001.M2P) that corresponds to each other shown in Figure 29 (a) and post-recorded data file (SHRP0001.PRE) are in principle as shown in Embodiment 1, be recorded as in CD 106 CA corresponding to configuration before CU, but different from embodiment 1 be to allow disjunction in the CU way.The CU#n-1 of Figure 29 (b) and CU#n are this examples.But CA is the same with embodiment 1, does not allow the disjunction in a CA.In addition, the total of the VU recovery time that comprises in continuum must be more than or equal to the CU recovery time.

Like this, by allowing the disjunction in the CU way, the possibility that can effectively apply flexibly dummy section improves.For example, be that the continuous dummy section of 16 seconds and 20 seconds size is positioned in the situation on the CD 106 at CU, if in the CU way, do not allow disjunction, then only can in described dummy section, record 16 seconds, waste in remaining 4 seconds, and if can CU on the way in disjunction, then can record 20 seconds.

＜CU unit determines method 〉

Definite method of CU recovery time is described with Figure 30.Determine in the method at this, the same with embodiment 1, interchangeability in order to ensure equipment room, suppose to consist of the device (parametric device model) and the post-recorded algorithm (with reference to the post-recorded algorithm) that consists of benchmark of benchmark, and then determine the CU recovery time, in order to seamless-reproducedly when stating in the use device and algorithm and carrying out post-recorded can not show one's slip.

Because the parametric device model is the same with embodiment 1, so description thereof is omitted.

Represented by following (a), (b) with reference to the post-recorded algorithm.(a) in principle, when end current C U reads, carry out the record of CA.(b) still, the end of the CU after the current CU that is reading is contained in the situation in other continuum, and the record of extension CA is until the CU after the current CU that is reading reads end.

Example shown in Figure 30 (a), 30 (b).Figure 30 (a) is an example of above-mentioned (a).In addition, among Figure 30 the sequence number from (1) to (8) corresponding to the sequence number from (1) to (8) the following explanation.

(1) reads CU#N as N CU.(2) wait in case finish, then moves to CA#M with pick-up as the end-of-encode of the post-recorded data of the CA#M of the CA that should then record.(3) record post-recorded data in CA#M.(4) pick-up is moved to CU#N+1.(5) read CU#N+1.(6) wait in case finish, then moves to CA#M+1 with pick-up as the end-of-encode of the post-recorded data of the CA#M+1 of the CA that should then record.(7) record post-recorded data in CA#M.(8) pick-up is moved to CU#N+2.

Figure 30 (b) illustrates an example of above-mentioned (b).(1) at first, read CU#N.At this moment, because be present in another continuum as the terminal of the CU#N+1 of next CU, so after reading CU#N, do not carry out the record of CA, read and carry out, until be present in the first half of the CU#N+1 in the identical continuum among the CU#N+1.(2) in a single day read CU#N+1 until the terminal of continuum finishes, then pick-up is moved to CA#M, (3) record the post-recorded data in CA#M, and (4) move to pick-up the remainder of CU#N+1.

By using this algorithm, even if in the situation of disjunction, also can share jump and the jump that is used for the CA record between the continuum in the CU way, the data reading that minimizing jumps causes suspends, and the result can reduce the unit of continuum length and CU, CA.Thus, the effective dummy section on the utilization dish.

With regard to above-mentioned parametric device model, state in the use with reference to the post-recorded algorithm and carry out in the situation of post-recorded, if meet the following conditions, then can guarantee not have post-recorded with the underflow with track buffer 502 of overflowing of impact damper 504.

This condition is the same with embodiment 1, is that formula (1) is set up.In addition, the mark in the present embodiment 4 only otherwise specify, the identical implication of expression and embodiment 1 then.

Tw (i) in the formula (1) is the same with the formula (4) of embodiment 1, but with regard to Tr (i), shown in (8), is the form of removing Ta from the formula (3) of embodiment 1, does not namely comprise the form of jump.

Tr(i)＝Te(i)×Ro/Rs+Te(i)×Ra/Rs…(8)

Do not comprise the reasons are as follows of jump: in present embodiment 4, because when CU reads jump in the way, carry out the CA record, so CU is read jump in the way jump when being processed into the CA record.Thus, can reduce the unit of final CU unit and continuum.

If will find the solution with Te (i) in formula (8) and formula (4) the substitution formula (1), then obtain to guarantee the condition of the Te (i) of real-time post-recorded, i.e. following formula (9).

$\mathrm{Te}\left(i\right)\≥\frac{2\mathrm{Ta}\×\mathrm{Rs}}{\mathrm{Rs}-\mathrm{Ro}-2\mathrm{Ra}}\·\·\·\left(9\right)$

That is, can guarantee that the CU recovery time lower limit Temin of post-recorded is as shown in the formula shown in (10).

$\mathrm{Te}\min =\frac{2\mathrm{Ta}\×\mathrm{Rs}}{\mathrm{Rs}-\mathrm{Ro}-2\mathrm{Ra}}\·\·\·\left(10\right)$

At this moment, the higher limit Temax of CU recovery time sets shown in (11).Here, Tvmax is the maximum recovery time of VU.

$\mathrm{Te}\max =\frac{2\mathrm{Ta}\×\mathrm{Rs}}{\mathrm{Rs}-\mathrm{Ro}-2\mathrm{Ra}}+\mathrm{Tv}\max \·\·\·\left(11\right)$

The higher limit of setting the CU recovery time is in order to estimate the post-recorded required delay of sound and the reproduced in synchronization of the common sound maximum of storer, to guarantee reproduction interchangeability.In addition, in present embodiment 4, set multiplexed interval lower limit Temin corresponding to audio bit speed Ra and video bits speed Rv, but also can irrespectively set constant lower limit with bit rate.But this value must be based on the bit rate of maximum.

In addition, if the CU recovery time is satisfied above-mentioned restriction, the VU recovery time in then no matter flowing is fixing or variable all harmless.

＜necessary buffer-stored tolerance 〉

In the present embodiment, during post-recorded the capacity of required track buffer 502 as long as based on following consideration.At first, with regard to present embodiment 4, if hypothesis needs most the situation of capacity, then be situation about producing continuously to CA record post-recorded data.Particularly, be the situation of disjunction before the CU end.In other words, for the CU cutting recording in two continuums and its most of data be present in situation in the existing continuum.

At this moment, if according to above-mentioned with reference to the post-recorded algorithm, before the CU end, carry out to CA record post-recorded data, then then after reading some data at this CU end, carry out to next CA record post-recorded data at once, return reading in of the rear CA of execution.For corresponding with it, need to be at twice to CA record post-recorded data with the capacity that can continue to reproduce during 1 CA reads in.Particularly, as long as guarantee the capacity Bpb of track buffer 502 according to formula (12).

Bpb＝(2×(2×Ta+Temax×Ra/Rs)+Temax×Ra/Rs)×Ro …(12)

＜management information file form 〉

Since the same with embodiment 1, so description thereof is omitted.

Processing during＜record 〉

Because except the restriction of continuous recording CU on dish, the same with embodiment 1, so description thereof is omitted.

Processing during＜reproduction 〉

Since the same with embodiment 1, so description thereof is omitted.

Processing during＜post-recorded 〉

Except using the algorithm of putting down in writing among Figure 30 when the post-recorded, since the same with embodiment 1, so description thereof is omitted.

The variation of＜embodiment 4 〉

Present embodiment 4 illustrates as the change of embodiment 1, certainly, also applicable to such as the situation of using post-recorded zone reservation file the 3rd embodiment or as JP 2001-43616 number of prior art reference, use the situation of identical file.That is, owing to set post-recorded with the physical configuration of the video data of zone, original records and about the parameter of this configuration, so disclosed invention essence is model specification in the present embodiment.

The present invention is applicable to being equipped with the post-recorded function, using DVD or hard disk etc. to coil the digital video record reproducing device (video disk recording device) of media in recording medium.

Claims (2)

1. an AV data record method records AV data and the 2nd AV data in recording medium, and AV data and the 2nd AV data are switched reproduction at the same time axle, it is characterized in that,

In described AV data and described the 2nd AV data, multiplexed rule according to the rules is multiplexed respectively a plurality of flow datas;

Described AV data record method is corresponding to the polygonal function that can switch in reproduction from the image of a plurality of angles in the same time axle, and described AV data are the data from the first angle, and described the 2nd AV data are the data from the second angle;

Comprise the steps:

First step generates by the interval of each regulation and cuts apart the AV of first data that described AV data form and cut apart the second portion AV data that described the 2nd AV data form by the interval of each regulation;

Second step is guaranteed be used to the continuum of recording a series of described AV of first data and described second portion AV data in described recording medium;

Third step, is recorded in described AV data and described the 2nd AV data on the described recording medium in the mode of described continuum with the described AV of the first data that will switch each other reproduction and described second portion AV data alternate configurations; With

The 4th step, with the file system management information recording/on described recording medium, this document system management messages will be in the described AV data of described third step record with when described the 2nd AV data manage as different files respectively, and management is used for described AV data and described the 2nd AV data are treated to the information of different files.

2. an AV data recording equipment records AV data and the 2nd AV data in recording medium, and AV data and the 2nd AV data are switched reproduction at the same time axle, it is characterized in that,

In described AV data and described the 2nd AV data, multiplexed rule according to the rules is multiplexed respectively a plurality of flow datas;

Described AV data recording equipment is corresponding to the polygonal function that can switch in reproduction from the image of a plurality of angles in the same time axle, and described AV data are the data from the first angle, and described the 2nd AV data are the data from the second angle;

Comprise such as lower unit:

First module generates by the interval of each regulation and cuts apart the AV of first data that described AV data form and cut apart the second portion AV data that described the 2nd AV data form by the interval of each regulation;

Second unit is guaranteed be used to the continuum of recording a series of described AV of first data and described second portion AV data in described recording medium;

Unit the 3rd, is recorded in described AV data and described the 2nd AV data on the described recording medium in the mode of described continuum with the described AV of the first data that will switch each other reproduction and described second portion AV data alternate configurations; With

Unit the 4th, with the file system management information recording/on described recording medium, this document system management messages will be in the described AV data of described the 3rd unit record with when described the 2nd AV data manage as different files respectively, and management is used for described AV data and described the 2nd AV data are treated to the information of different files.

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