CN1705999A - AV data recording method, AV data recording device, data recording medium, program, and program recording medium - Google Patents

Abstract

An original stream file and an after recording file are managed as separate files. Each of the original stream file and the after recording file consists of partial data (CU and CA) divided by a predetermined interval. When these data are recorded onto a disc, the after recording data (CA) area is recorded in the vicinity of the corresponding original stream (CU). Thus, it is possible to perform reproduction on an ordinary MPEG-2 PS/TS decoder and real time after recording as well as to realize data recording having few reproduction breaks when the after recording result is nondestructively edited.

Description

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 medium (below be called the video disk recording device) is popularized.With regard to these devices, the same with the band medium, require the cheap technology that realizes post-recorded (after recording) function.The post-recorded function be to the audio or video that write down after append information, the function of audio frequency especially.

Realize the prior art of post-recorded function as use dish medium, have spy to open 2001-43616 communique (open February 16 calendar year 2001 day) as day disclosure special permission communique of the applicant's application.Below, with Figure 20 (a) and (b) its summary is described.

Open in the 2001-43616 communique the spy, 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) constitute with the zone.With Figure 20 (a) is example, and before part primary flow data 3021, the post-recorded data of inserting the post-recorded voice data be used to store reproduced in synchronization are with zone 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, (seek) becomes Min. with tracking, suppresses 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 to have and the special Transport Stream that defines among the ISO/IEC 13818-1 of the flow structure different structure of putting down in writing in the 2001-43616 communique (below be called MPEG-2TS) or the Program Stream (below be called MPEG-2PS) of opening.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, there is spy as day disclosure special permission communique to open 2000-306327 communique (open day on November 2nd, 2000) and the spy opens flat 11-298845 communique (open on October 29th, 1999 day).

But,,, also may not be correctly decoded even if reproduce by the code translator of general use in that the suitable above-mentioned spy of MPEG-2PS/TS is opened under the situation of the flow structure of putting down in writing in the 2001-43616 communique.The following describes its reason.

With regard to MPEG-2PS/TS, set code translator model, 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 as benchmark.But, open above-mentioned spy under the situation of flow structure of 2001-43616 communique, in each post-recorded data with the voice data of storage more than 1 second in zone.Reproduced under 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, it is according to the multiplexed regulation of aforesaid MPEG-2PS that the spy opens the post-recorded function of putting down in writing in the 2000-306327 communique, the multiplexed post-recorded data function in zone in stream, but under the lower situation of the transfer rate of dish, have the problem of real-time post-recorded difficulty.

On the other hand, the spy opens flat 11-298845 communique by the post-recorded data are recorded in other file, thereby satisfies the multiplexed regulation of MPEG-2PS in each file.At this moment, under the situation of reproducing the post-recorded result,, need to repeat tracking for the file and the primary flow file of mutual playback record post-recorded data.Therefore, carry out in result under the situation of non-destruction editor (flow data on the inactive order utilizes reproduction path information to carry out apparent editor) post-recorded, higher because of 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 under 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 associated data with described AV data sync, 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 A V data and partial association data; The 2nd step on described recording medium, guarantees to be used to write down the continuum of a series of described part A V data and described partial association data, i.e. the 1st continuum; The 3rd step, described part A V 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 A V data with when described partial association data manage as different files respectively, the information that management becomes different files to use described part A V data and described partial association data processing.

According to above-mentioned formation, the 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 A V 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 data in synchronization continuously, part A V data after will cutting apart and partial association data are recorded in the position physically approaching each other on the above-mentioned recording medium.

And, in the file system management information of the 4th step record, by part A V data are become different files with the partial association data management, guarantee real-time post-recorded thus, and can realize reproducing by high, the general MPEG-2PS code translator of non-destruction editor performance.In addition, under the situation that the reproduction of reproduction that makes the AV data and associated data is carried out synchronously, because part A V data and partial association data are pressed close to record, thus the frequency step-down of tracking, so big with the leeway of other data sync reproduction.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 of the corresponding relation by near part A V data expression being configured on the recording medium and partial association data is recorded in the recording medium, can more easily not know continuous recording part A V data and partial association data, can read in optimum data with reference to file system management information.

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 A V data and described the 1st continuum is recorded in the described recording medium.

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

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

Meet with when stating part A V data and partial association data documentarily under the situation of fault, the partial association data in the discarded record write down 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 A V of correspondence data, there are not the partial association data, thus, when non-destruction editor or when reproducing non-destruction edited result, can judge the not interval of continuous recording part A V data and partial association data easily, can pass on this interval to suspend the possibility height that reproduces to the user in advance.

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 associated data with described AV data sync, be recorded on the recording medium, it is characterized in that: possess the 7th step, by each predetermined distance, described AV data are divided into part A V data; The 8th step, on described recording medium, guarantee to be used to write down the continuum of a series of described part A V data and part reservation data, i.e. the 1st continuum, this part reservation data guarantees at record during described associated data, the posting field of the partial association data of cutting apart corresponding to described part A V data; The 9th step, limit are made described part reservation data, and the limit is described part A V 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 A V data with when described part reservation data manages as different files respectively, management is processed into the information that different files are used with described part A V data with 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 A V 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 A V 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 position physically approaching each other on the above-mentioned recording medium continuously.

And, by part A V data being managed into different files with the part reservation data by the file system management information of the 10th step record, real-time post-recorded when guaranteeing the record associated data, and can realize reproducing 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,, described associated data is divided into the partial association data by each predetermined distance; 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 A V continuous data recording; With the 13rd step, file system management information is recorded on the described recording medium, this document system management messages when described partial association data are managed as the file outside described part A V data and the described part reservation data, the management information that to be used for described partial association data processing be different files.

According to above-mentioned formation, under the situation that the reproduction of reproduction that makes the AV data and associated data is carried out synchronously, because closely recording section AV data and partial association data, thus the frequency step-down of tracking, and then the leeway of reproducing with other data sync is big.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 of the corresponding relation by near part A V data expression being configured on the recording medium and partial association data is recorded in the recording medium, can be not with reference to file system management information, more easily know continuous recording part A V data and partial association data, can read in optimum data.

By following record, other purpose of the present invention, feature and advantage 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 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 constitutes block diagram.

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

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

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 constitute, 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 handled 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 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 carried out in proper order by the intrinsic content of common formation, each embodiment that uses of the present invention.In addition, the invention is not restricted to this.

＜system constitutes 〉

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 portion 126 and not shown video camera, microphone, loudspeaker, display etc.In addition, pick-up 107, ECC code translator 108, ECC scrambler 109 constitutes drivers 127 (parts of continuous recording part A V data and partial association data, file system management information is recorded in parts on the 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 processing file system management information after 126 pairs of error correction of management information processing portion sends to multiplexer 112 or removes 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, the data of reading are sent to post-recorded data reproduction impact damper 122 according to indication from host CPU 101.

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 send to audio recording impact damper 119 and videograph impact damper 120 respectively by the data behind audio coder 117 and video encoder 118 compressed encodings.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 to be used for the continuum of 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 MPEG-1 Layer-II respectively, in the coded system of video data, use MPEG-2 by ISO/IEC 13818-2 regulation by ISO/IEC 13818-3 regulation.CD 106 is rewritable CDs such as DVD-RAM, and 2048 bytes are made as 1 sector, for error correction, constitutes 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 constitutes with the directories/files shown in the UDF record diagram 3 (a) shown in Fig. 3 (b).

(Anchor Volume Descriptor Pointer: 602 entrances (entry point) that are equivalent to be used to explore the management information of UDF anchor formula Volume Descriptor pointer) 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, though 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 insert data, or deleted 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 the filename of management document 621, file 622 or the FE606 of extent set, the positional information of FE608 respectively.FE606 is with the zone of the real data of configuration file 621, and promptly 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, VDS601, 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 constitute 〉

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

Primary flow file (SHRP001.M2P) is to record the file of making by 1 time, is MPEG-2PS (Program Stream: form program stream).Post-recorded data file (SHRP0001.PRE) is to be used to guarantee that post-recorded is with the zone and store the file of post-recorded data.Primary flow management information file (SHRP0001.0MI) be storage about the primary flow file time-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 the file of storage appointment by the information in which interval of 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, make above-mentioned 4 files again.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 wanting to reproduce the filename of the primary flow management information file of 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 constitutes.CU is that dish is gone up continuous recording unit.How the CU that the length of CU is configured to no matter will to constitute AV stream is configured on the dish, all guarantee seamless-reproduced (can not have in the reproduction and suspend ground reproduced image or sound) or post-recorded (video of seamless-reproduced post-recorded object, on one side record audio) on one side in real time.This establishing method as described later.

CU is shown in Fig. 5 (b), and a Video Unit (VU) constitutes by integer.VU is the unit that can reproduce separately, can constitute 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, so that when reading dish, do not read unnecessary data with sector size.In addition, make by the video data of group bag to constitute, make a voice data group bag integer AAU (Audio Access Unit: the audio frequency access unit) by 1-2 GOP.

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.In sample frequency is under the situation of 48kHz, and 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 is provided with 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 reproduction 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, writes the bag of having stored the post-recorded data again.SCR in the packet header of the bag that writes again (System Clock Reference: system clock reference) with packets headers in PTS (Presentation Time Stamp: the express time mark) consistent with the SCR and the PTS of corresponding audio pack in the primary flow file.Thus, by write the corresponding audio pack among the CU again by the audio pack among the CA, can more easily replace the audio frequency of primary flow by the post-recorded data.

＜to the dish on configuration

With Fig. 1 (a) and (b) primary flow file and the configuration of post-recorded data file on dish are described.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 mobile Min. that becomes of the pick-up when reproducing as described later, is suspended the possibility of reproducing and is reduced when reproducing non-destruction edited result.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 constitute the device (parametric device model) and the post-recorded algorithm (with reference to the post-recorded algorithm) that constitutes benchmark of benchmark, afterwards, determine the CU recovery time, when using these devices and algorithm to carry out post-recorded, seamless-reproducedly can not show one's slip with box lunch.

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 constitute 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, also comprise and read CA from coiling to read 500.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, write the corresponding CA piece in the post-recorded usefulness impact damper 504 again.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 speed of output data be made as Rs.In addition, will read and maximum time of stopping to write down 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,,, then can guarantee not have overflow the underflow with track buffer 502 of post-recorded with impact damper 504 if meet the following conditions using under the described situation of carrying out post-recorded with reference to the post-recorded algorithm.

Promptly, with regard to regard to the CU#i of any CU in the AV stream, when the maximum recovery time is made as Te (i), will comprise be made as maximum readout time that disjunction jumps Tr (i), in the time of will being made as Tw (i) as the dominant record time, as long as following formula (1) is set up corresponding to the CA#i of the CA of CU#.

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 toward the required maximum access time of access multiple to CA.

In addition, synchronously carry out the record of post-recorded data on dish owing to finishing with the CA coding,

$\underset{1}{\mathrm{\Σ}}\mathrm{Te}\left(i\right)\≥\underset{1}{\mathrm{\Σ}}(\mathrm{Tr}\left(i\right)+\mathrm{Tw}\left(i\right))$ …(2)

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 maximum bit rate in the primary flow and post-recorded audio stream being made as Ro, Ra.In addition, Rs represents the 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)

VU readout time and the CA readout time among the CU represented on the 1st, the 2nd on the right of following formula (3) respectively.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 CA unit's record at an arbitrary position, so also consider the interior week of CU in current the reading for coiling, the CA of record object is the most peripheral of dish, and need 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), find the solution by Te (i), then obtain guaranteeing the condition of the Te (i) of real-time post-recorded, i.e. following formula (5).In addition, Rv represents the 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 reproduced in synchronization required delay memory-aided maximum of post-recorded with sound and common sound, and guarantees to reproduce interchangeability.In addition, in present embodiment 1,, also can irrespectively set constant lower limit with bit rate though set multiplexed interval lower limit Temin corresponding to audio bit speed Ra and video bits speed Rv.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 asynchronous execution disjunction jump and pick-up moving to the CU in past.Its reason is: asynchronous execution is compared with the situation of synchronous execution, since be used to carry out real-time post-recorded the condition strictness (suspend to reproduce with data read during long), 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, can be prerequisite to the moving of the CU in past also with synchronous execution disjunction jump and pick-up, set Temin.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.

Video_unit_table () is shown in Figure 10 (a), by the 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), by PTS (VU_PTS of PresentationTime Stamp_ and storage VU_PN formation apart from the relative bag sequence number of file beginning of expression about the beginning display frame of VU_flags, the store predetermined VU of the various attribute informations of regulation VU.Can specify position by VU_PTS and VU_PN corresponding to the VU of specific PTS.That is, VU_PTS represents the reproduction zero hour of primary flow (AV data), and VU_PN represents to write down the positional information of the 1st continuum of CA and CU, in other words, is the beginning positional information of CA.

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), under the situation of 0b, the VU of expression management is not the beginning of CU, and under the situation of 1b, the VU of expression management is the beginning of CU.

Continuous_area_table () is shown in Figure 12 (a), by the 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 come the position of specific CA corresponding to the specific PTS in the primary flow 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, and shown in Figure 13 (b), under the situation of 0b, the CA of expression management is not before (reproduced in synchronization) CU of correspondence, and under 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,, then produce tracking as can be known, suspend the possibility height that reproduces CA if this sign is 0b.

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 constitutes by the pg_attribute () of the attribute information of stored programme information integral body and storage.

Scene_table () is shown in Figure 15 (a), by the 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, whether storage reproduces the regulation scene 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 constitutes.

Processing during＜record 〉

Below, with reference to the process flow diagram of Figure 16 processing when user's indication is recorded 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 constitute 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 smaller 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 and be divided into the 1st step of part A V data (CU: i.e. 6 VU) and partial association data (CA) as the post-recorded data of its associated data as the primary flow of AV 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 audio coder 117, video encoder 118 (S703) respectively.In addition, check the data (S704) that in writing down, whether accumulated more than or equal to 1ECC block size (32KB), during accumulating, repeat processing from S705 to S708 with impact damper.

That is,, 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 accumulated data in impact damper more than or equal to the 1ECC block size at record.If empty, the data that then will write down 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) that can write down 9 VU and CA, pick-up is moved to the beginning (S708) of this dummy section, the data that write down 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 to be used to write down the continuum of a series of part A V 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 A V 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 checks whether indicated end of record (EOR) (S709),, then move to S704 as if end of record (EOR) not.

In S709, indicated under the situation of end of record (EOR), carried out following the processing.At first, to the data of record,, become 32KB (S710) in end additional virtual data with not enough 32KB in the impact damper.Then, these data are recorded in dish and go up (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) on the RAM102 about the management information of primary flow with about the management information of post-recorded data.In addition, file system management information is recorded in (S716) in the CD 106.In addition, Ci Shi file system management information 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 used for described part A V 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 with described the 1st continuum with described part A V data.

In addition, the processing of above-mentioned S715 is equivalent to the 5th step, with reproduction zero hour of described part A V 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 above-mentioned size earlier sends to and writes down with 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 constitute 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 constitute 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 the 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 put 0 (S902), the scene sequence number littler 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 whether the VU of this video_unit_info () management is the beginning (S808) of CU.

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

Above-mentioned stream is parallel with data with reading from CD 106, and following execution decoding is handled.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 that the data that produced by the scene from CA to VU are read is also a bit.

On the contrary, under 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 the user has indicated post-recorded 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 write down the post-recorded data, start audio coder 117 simultaneously, 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 with the beginning scene reproduction.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 the moment of record with 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 writes down under 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, before the CU of correspondence, do not have CA as can be known by the placement_flag among the continuous_area_info () that will manage this CA.Certainly, the extent of discarded CA is replaced as the extent of the CA that makes again in the file system management information.

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

The variation of＜embodiment 1 〉

In present embodiment 1,, also consider Elementary Stream, i.e. group bag or packetizing ground record though equally with the primary flow file be recorded in the post-recorded data file with the MPEG-2PS form.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 organize formality such as packetize once more.

In addition, in present embodiment 1, though in CA recording audio data, also can write down the data of other kind.For example, also can write down 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 write again.

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

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 a plurality of data of carrying out reproduced in synchronization in the embodiment 1 on recording medium continuously, 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 function from the image of a plurality of angles in the identical time shaft.

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 constitutes 〉

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 dish on configuration

Shown in Figure 19 (b), to be divided into partial data 2021,2022,2023 as ANGL0001.M2P from the data of the 1st angle, and will be divided into partial data 2011,2012,2013, and submit interworking at dish 2001 and put as ANGL0002.M2P from the data of the 2nd angle.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 omit explanation.

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

[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, the file that order is used to guarantee dummy section is different with the file that is used to write down each AV data.In addition, because present embodiment 3 is similar with embodiment 1, so difference only is described.

＜file, catalogue constitute 〉

The file of present embodiment shown in Figure 21 3, catalogue constitute.In this document, catalogue constitute, constitute (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 to be used to preengage the file of 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 (SHRP0001.0MI), primary flow file (SHRP0001.M2P) and the embodiment 1 is identical.

When recording, to a post-recorded zone reservation of 1 primary flow file logging file.1 post-recorded data file is made a post-recorded data management information file.Graphic file is to edit the file that appends by non-destruction recording the back, and memory overlay is shown in the 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 with embodiment 1, generates earlier by carrying out the post-recorded future events.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 adopt with embodiment 1 in the same formation of post-recorded data file shown in Figure 6.That is, the regional reservation of post-recorded file is made of the individual Continuous Area (CA) of integer, and a CA exists corresponding to a CU in the primary flow file, guarantees to be used to write down the corresponding CU zone of phase record data afterwards.But because the CA here is used to guarantee the zone after all, the AV data of different reproduction object are so the data of content can be arbitrary datas.

＜to the dish on configuration

The configuration mode of each file on dish in the present embodiment 3 is described.Figure 22 (a)-22 (b) expression is recorded the back, is not carried out the file configuration of the state (promptly not making the state of post-recorded data file) of post-recorded.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 the corresponding CA (Figure 22 (b)) of configuration before CU.

Then, with behind Figure 23 (a)-23 (b) additional record has been described audio frequency and the figure, post-recorded zone reservation file, post-recorded data file and the configuration of graphic file on dish.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 guaranteeing by CA#n-1, in the zone of guaranteeing by PR#1, CA#n, in the zone of guaranteeing by PR#2, CA#n+1, configuration PR#3.In addition, arrangement plan graphic data IMG in the zone of guaranteeing by CA#n+1.

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

Like this, by importing post-recorded zone reservation file, append several data easily from behind as the vacant file in management post-recorded zone.In addition, by graph data is stored in the different files with 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, omits explanation here.The 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 the voice data that appends and the subaudio_table () and the graphics_table () of graph data respectively after recording.

Subaudio_table () is shown in Figure 25 (a), by the 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 constitute 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 constitutes 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 constitute 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), under the situation of 0b, the voice data of expression management or graphic file be not before (reproduced in synchronization) CU of correspondence, under 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,, then produce tracking as can be known, suspend the possibility height that reproduces CA if this is masked as 0b.

＜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, so to the part omission explanation of execution same treatment with reference to flow process Figure 17 explanation in basic procedure and the embodiment 1.But, because in the reproduction processes of present embodiment 3, it is different with embodiment 1 that scene reproduction is handled, 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 the 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 ').Under the situation that has this graphic file and voice data, graphic file is carried out reading of this document, to voice data,, and carry out the reading of corresponding audio data (S803 ') with reference to the audio data management message file of this voice data of management.

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 the recovery time is that then this scene finishes more than the sc_duration among the scene_info () for current scene.

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 (S808) of CU, confirm to carry out the existing of the graphic file of reproduced in synchronization and voice data (S809 ') by above-mentioned steps, under situation about existing, read (S810 ') by above-mentioned steps.

Processing during＜post-recorded 〉

The processing of explanation when the user has indicated post-recorded.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 there is the zone that is used for post-recorded in the recording medium.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 write down the post-recorded data.As if sufficient size is arranged, then record post-recorded data in this zone as if no sufficient size, then do not write down the post-recorded data in the zone of being guaranteed by post-recorded zone reservation file in other zone.

Then, start audio coder 117 simultaneously 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 the moment of record at bag, 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 with impact damper 114 with the PTS that surpasses the CU scope in the current decoding.By from the PTS of the current CU that is deciphering, obtaining the CA position of record object with reference to continuous_area_table ().In the zone of guaranteeing, the post-recorded data are recorded in the post-recorded data file by CA.

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

In addition, with regard to post-recorded zone reservation file, from the management object of file, remove the zone of having write down the post-recorded data.That is, reduce size.And, only reduce CA_PN corresponding to each inlet 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 〉

The processing of explanation when the user indicates the additional overlapping graph data that is shown on the video.At first, whether investigation exists the zone of the file that is used for the recording storage graph data.Particularly, investigation is about the continuous_area_info () in the management information file of the stream of graph data extra objects, investigation in 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, preengage the zone of RR release record graph data the file from the post-recorded zone with post-recorded.Only reduce CA_PN corresponding to the follow-up inlet among the continuous_area_info () that discharges size.In addition, append the inlet of a graphics_info (), the interleave_flag of the gr_flags () in this inlet is arranged to 1 to the gaphics_table of program information file, PIF ().At this moment, by on the dish with the approaching position of the video data that reproduces simultaneously on the recording geometry data, do not need to be used for when rabbit, reading the tracking of graph data thus.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 inlet of a graphics_info () to the graphics_table of program information file, PIF (), and the interleave_flag of the gr_flags () in will entering the mouth 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, recording back additional record graphic file or post-recorded data file, certainly, also can be when recording record.Even if in this case, also graphic file or post-recorded data file can be processed into 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 also can use other file layouts such as JPEG certainly.

[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 constitute 〉

Because the same, so omit explanation with embodiment 1.

The form of＜AV stream 〉

Except that 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 〉

Because the same, so omit explanation with embodiment 1.

＜to the dish on configuration

With Figure 29 primary flow file and the configuration of post-recorded data file on dish are described.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 the corresponding CA of configuration before CU, but different with 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 under the situation on the CD 106 at CU, if in the CU way, do not allow disjunction, then only can in described dummy section, write down 16 seconds, waste in remaining 4 seconds, and if can CU on the way in disjunction, then can write down 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 constitute the device (parametric device model) and the post-recorded algorithm (with reference to the post-recorded algorithm) that constitutes benchmark of benchmark, and then determine the CU recovery time, so that seamless-reproducedly when stating device and algorithm in the use and carrying out post-recorded can not show one's slip.

Because the parametric device model is the same with embodiment 1, so omit explanation.

Represent by following (a) and (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 under the situation in other continuum, the record of extension CA, and 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 the following explanation from (1) to (8).

(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 write down.(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 write down.(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,,, read, in CU#N+1, be present in the first half of the CU#N+1 in the identical continuum and carry out so after reading CU#N, do not carry out the record of CA because be present in another continuum as the terminal of the CU#N+1 of next CU.(2) in a single day read the terminal of CU#N+1 until the continuum and finish, then pick-up is moved to CA#M, (3) write down the post-recorded data in CA#M, (4) move to pick-up the remainder of CU#N+1.

By using this algorithm, even if in the CU way, under the situation of disjunction, also can share jump and the jump that is used for the CA record between the continuum, minimize the data that cause of jumping and read time-out, 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 under the situation of post-recorded, if meet the following conditions, then can guarantee not have overflow the underflow with track buffer 502 of post-recorded with 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), as the formula (8), is the form of removing Ta from the formula (3) of embodiment 1, does not promptly 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 maximum of the required delay of the sound and the reproduced in synchronization of common sound with 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,, then be to produce continuously to CA record post-recorded data conditions if hypothesis needs most the situation of capacity.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 a point data at this CU end, carry out to next CA record post-recorded data at once, return the back and carry out reading in of CA.For corresponding with it, need 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 〉

Because the same, so omit explanation with embodiment 1.

Processing during＜record 〉

Because except that the restriction of continuous recording CU on dish, the same with embodiment 1, so omit explanation.

Processing during＜reproduction 〉

Because the same, so omit explanation with embodiment 1.

Processing during＜post-recorded 〉

Except that using the algorithm of putting down in writing among Figure 30 when the post-recorded, since the same with embodiment 1, so the omission explanation.

The variation of＜embodiment 4 〉

Present embodiment 4 illustrates as the change of embodiment 1, certainly, also applicable to post-recorded is regional preengages the situation of file or open the situation of using identical file 2001-43616 number as the spy as the prior art reference as using the 3rd embodiment.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 medium in recording medium.

Claims (14)

1. AV data record method, with multiplexed rule according to the rules multiplexed the AV data of a plurality of flow datas with associated data with described AV data sync, be recorded on the recording medium, it is characterized in that: possess

The 1st step by each predetermined distance, is divided into part A V data and partial association data with described AV data and described associated data;

The 2nd step on described recording medium, guarantees to be used to write down the continuum of a series of described part A V data and described partial association data, i.e. the 1st continuum;

The 3rd step, described part A V 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 A V data with when described partial association data manage as different files respectively, the information that management becomes different files to use described part A V data and described partial association data processing.

2. AV data record method according to claim 1 is characterized in that:

Possess the 5th step, the corresponding informance of the positional information of reproduction zero hour of described part A V data and described the 1st continuum is recorded in the described recording medium.

3. AV data record method according to claim 1 is characterized in that:

Possess the 6th step, near the information whether described partial association data of management are recorded in the corresponding described part A V data is recorded in the described recording medium.

4. AV data record method, can with multiplexed rule according to the rules multiplexed the AV data of a plurality of flow datas with associated data with described AV data sync, be recorded on the recording medium, it is characterized in that: possess

The 1st step by each predetermined distance, is divided into part A V data with described AV data;

The 2nd step, on described recording medium, guarantee to be used to write down the continuum of a series of described part A V data and part reservation data, the posting field of the partial association data cut apart corresponding to described part A V data is guaranteed in i.e. the 1st continuum, this part reservation data when the described associated data of record;

The 3rd step, limit are made described part reservation data, and the limit is described part A V data of continuous recording and described part reservation data in described the 1st continuum; With

The 4th step, log file system management messages on described recording medium, wherein, described file system management information with described part A V data with when described part reservation data manages as different files respectively, management is processed into the information that different files are used with described part A V data with described part reservation data.

5. AV data record method according to claim 4 is characterized in that: possess

The 5th step when the described associated data of record, is divided into the partial association data by each predetermined distance with described associated data;

The 6th step is recorded in described partial association data and the guaranteeing in the zone of the described part reservation data of corresponding part A V continuous data recording; With

The 7th step, file system management information is recorded on the described recording medium, wherein, this document system management messages when described partial association data are managed as the file outside described part A V data and the described part reservation data, the management information that to be used for described partial association data processing be different files.

6. AV data record method according to claim 4 is characterized in that:

Possess the 8th step, the corresponding informance of the positional information of reproduction zero hour of described part A V data and described the 1st continuum is recorded in the described recording medium.

7. AV data record method according to claim 4 is characterized in that:

Possess the 9th step, near the information whether described partial association data of management are recorded in the corresponding described part A V data is recorded in the described recording medium.

8. AV data recording equipment, with multiplexed rule according to the rules multiplexed the AV data of a plurality of flow datas with associated data with described AV data sync, be recorded on the recording medium, it is characterized in that: possess

By each predetermined distance, described AV data and described associated data are divided into the parts of part A V data and partial association data;

On described recording medium, guarantee to be used to write down the continuum of a series of described part A V data and described partial association data, i.e. the parts of the 1st continuum;

The parts of described part A V data of continuous recording and described partial association data in described the 1st continuum; With

The parts of log file system management messages on described recording medium, wherein, this document system management messages with described part A V data with when described partial association data manage as different files respectively, the information that management becomes different files to use described part A V data and described partial association data processing.

9. AV data recording equipment, can with multiplexed rule according to the rules multiplexed the AV data of a plurality of flow datas with associated data with described AV data sync, be recorded on the recording medium, it is characterized in that: possess

By each predetermined distance, described AV data are divided into the parts of part A V data;

On described recording medium, guarantee to be used to write down the continuum of a series of described part A V data and part reservation data, the i.e. parts of the 1st continuum, this part reservation data are guaranteed when the described associated data of record the posting field corresponding to the divided partial association data of described part A V data;

The limit makes described part reservation data, the parts of the limit described part A V data of continuous recording and described part reservation data in described the 1st continuum; With

The parts of log file system management messages on described recording medium, wherein, this document system management messages with described part A V data with when described part reservation data manages as different files respectively, management is processed into the information that different files are used with described part A V data with described part reservation data.

10. AV data recording equipment according to claim 9 is characterized in that: possess

When the described associated data of record, at interval described associated data is divided into the parts of partial association data in accordance with regulations;

Described partial association data are recorded in parts in the zone guaranteed with the described part reservation data of corresponding part A V continuous data recording; With

File system management information is recorded in parts on the described recording medium, wherein, this document system management messages when described partial association data are managed as the file outside described part A V data and the described part reservation data, the management information that to be used for described partial association data processing be different files.

11. a data medium, the AV data of according to the rules multiplexed rule of record is multiplexed a plurality of flow datas and with the associated data of described AV data sync is characterized in that: possess

By each predetermined distance, described AV data and described associated data are divided under the state of part A V data and partial association data a series of described part A V data of continuous recording and described partial association data; With

The log file system management messages, wherein, described file system management information with described part A V data with when described partial association data manage as different files respectively, the information that management becomes different files to use described part A V data and described partial association data processing.

12. a program, make multiplexed rule that computing machine will be according to the rules multiplexed the AV data of a plurality of flow datas with associated data with described AV data sync, be recorded on the recording medium, it is characterized in that: computing machine is carried out

The 1st step by each predetermined distance, is divided into part A V data and partial association data with described AV data and described associated data;

The 2nd step on described recording medium, guarantees to be used to write down the continuum of a series of described part A V data and described partial association data, i.e. the 1st continuum;

The 3rd step, described part A V 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, wherein, described file system management information with described part A V data with when described partial association data manage as different files respectively, the information that management becomes different files to use described part A V data and described partial association data processing.

13. program, make computing machine carry out following actions, that is, with multiplexed rule according to the rules multiplexed the AV data of a plurality of flow datas with associated data with described AV data sync, be recorded on the recording medium, it is characterized in that: computing machine is carried out

The 1st step by each predetermined distance, is divided into part A V data with described AV data;

The 2nd step, on described recording medium, guarantee to be used to write down the continuum of a series of described part A V data and part reservation data, the posting field corresponding to the divided partial association data of described part A V data is guaranteed when the described associated data of record in i.e. the 1st continuum, this part reservation data;

The 3rd step, limit are made described part reservation data, and the limit is described part A V data of continuous recording and described part reservation data in described the 1st continuum; With

The 4th step, log file system management messages on described recording medium, wherein, described file system management information with described part A V data with when described part reservation data manages as different files respectively, management is processed into the information that different files are used with described part A V data with described part reservation data.

14. a recording medium is characterized in that: storage claim 12 or 13 described programs.

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