CN101587727B - 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 data file are managed as different files. In the original stream file, data is made up of sets of partial data (CU) divided in accordance with a predetermined interval. Likewise, in the after-recording data file, data is made up of sets of partial data (CU, CA) divided in accordance with a predetermined interval. These sets of data are recorded onto adisc such that the after-recorded data (CA) is recorded in a region adjacent to a relevant original stream (CU). This allows reproduction and real-time after-recording with the use of a general MPEG- 2 PS/TS decoder. Moreover, this allows realization of data recording that causes less interruption of reproduction when non-destructive editing is carried out with respect to an after-recorded result.

Description

AV data record method, AV data recording equipment, data medium, program and program record medium

The application relates to female case dividing an application for following application:

The applying date: on October 15th, 2003

Application number: 200380101652.4

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

Technical field

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

Background technology

The digital video record reproducing device of use dish 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 between the primary flow data of cutting apart by the recovery time of every regulation (the video/audio data of initially recording), inserting reproduced in synchronization 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); Through with the part primary flow data of reproduced in synchronization and post-recorded data with area configurations near physically; 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, but through being set for the value (about the several seconds) of considering seek time etc. and executive 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 opens flat 11-298845 communique (open on October 29th, 1999 day) with the spy.

But,,, also may not correctly decode 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.Its reason is described below.

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, each post-recorded data with the zone in the voice data of storage more than 1 second.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; Multiplexed post-recorded data are used the 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 through the post-recorded data are recorded in other file, thereby in each file, satisfies the multiplexed regulation of MPEG-2PS.At this moment, under the situation of reproducing the post-recorded result, file and primary flow file for mutual playback record post-recorded data need the repetition tracking.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 said AV data sync; Be recorded on the recording medium, it is characterized in that, possess: the 1st step; By each predetermined distance, said AV data and said associated data are divided into part A V data and partial association data; The 2nd step on said recording medium, guarantees to be used to write down the continuum of a series of said part A V data and said partial association data, i.e. the 1st continuum; The 3rd step, said part A V data of continuous recording and said partial association data in said the 1st continuum; With the 4th step; Log file system management messages on said recording medium; Said file system management information with said part A V data with when said partial association data are managed as different files respectively, the information that management becomes different files to use said part A V data and said 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 through 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.

Through 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; Through 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 outside the post-recorded audio frequency, also edit additional patterns data etc. through non-destruction, it is also lower to reproduce the possibility of being suspended.

In addition; With regard to regard to the file system management information of different files; The information of the corresponding relation through 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 said part A V data and said the 1st continuum is recorded in the said recording medium.

According to above-mentioned formation, can specify the position of partial association data (post-recorded is with the zone) 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 said partial association data of management are recorded in the corresponding said part A V data is recorded in the said 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; Can know that this moment is with regard to the information of managing these partial association data; 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, the possibility that can be in advance pass on this interval to suspend to reproduce to the user is high.

In addition; Other AV data record method of the present invention can with multiplexed rule according to the rules multiplexed the AV data of a plurality of flow datas with associated data with said AV data sync; Be recorded on the recording medium; It is characterized in that: possess the 7th step,, said AV data are divided into part A V data by each predetermined distance; The 8th step; On said recording medium; Guarantee to be used to write down the continuum of a series of said part A V data and part reservation data; I.e. the 1st continuum, this part reservation data guarantee when the said associated data of record, the posting field of the partial association data of cutting apart corresponding to said part A V data; The 9th step, limit are made said part reservation data, and the limit is said part A V data of continuous recording and said part reservation data in said the 1st continuum; With the 10th step; Log file system management messages on said recording medium; Wherein, Said file system management information with said part A V data with when said part reservation data is managed as different files respectively, management is processed into the information that different files are used with said part A V data with said 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 through 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.

Through 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; Through 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-2 PS of non-destruction editor performance code translator.

In addition, with regard to above-mentioned AV data record method, also can constitute and possess the 11st step, when the said associated data of record,, said associated data is divided into the partial association data by each predetermined distance; The 12nd step is recorded in said partial association data and the guaranteeing in the zone of the said part reservation data of corresponding part A V continuous data recording; With the 13rd step; File system management information is recorded on the said recording medium; This document system management messages when said partial association data are managed as the file outside said part A V data and the said part reservation data, the management information that to be used for said 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, so the frequency step-down of tracking, so big with the leeway of other data sync reproduction.For example, even if outside the post-recorded audio frequency, also edit additional patterns data etc. through non-destruction, it is also lower to reproduce the possibility of being suspended.

In addition; With regard to regard to the file system management information of different files; The information of the corresponding relation through 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 know continuous recording part A V data and partial association data not with reference to file system management information, can read in optimum data.

Through following record, other purpose of the present invention, feature and advantage will be obvious.In addition, interests of the present invention become clearer in explanation below accompanying drawing.

Description of drawings

Fig. 1 (a), Fig. 1 (b) represent an 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 an 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 an 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, specify embodiment of the present invention with reference to accompanying drawing.The explanation is here carried out by the intrinsic content of common formation, each embodiment that uses of the present invention in proper order.In addition, the invention is not restricted to this.

< system's formation >

Fig. 2 states the ultimate system pie graph of the common video disk recording device of each embodiment after being.

As shown in Figure 2, this video disk recording device is made up of following device: bus 100, host CPU 101, RAM102, ROM103, user interface 104, system clock 105, CD 106, pick-up (pickup) 107, ECC (Error Correcting Coding: Error Correction of Coding) code translator 108, ECC scrambler 109, audio reproducing with impact damper 110, rabbit with impact damper 111, go multiplexer 112, multiplexer 113, record with impact damper 114, tone decoder 115, video decoder 116, audio coder 117, video encoder 118, audio recording with impact damper 119, videograph with impact damper 120, go multiplexer 121, post-recorded data reproduction with 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 the parts on the said recording medium).

Through 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 through 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 the post-recorded data reproduction with impact damper 122 according to indication from host CPU 101.

Tone decoder 115 is according to the indication from host CPU 101, from audio reproducing with impact damper 110 and post-recorded data reproduction with sense data the impact damper 122, the data execution of reading is deciphered.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, in when record, will send to respectively by the data behind audio coder 117 and video encoder 118 compressed encodings audio recording with impact damper 119 and videograph with impact damper 120.Multiplexer 113 is according to the indication from host CPU 101, from audio recording with impact damper 119 and videograph with sense data the impact damper 120, it is multiplexed that the data of reading are carried out AV, and send to cutting treatmenting part 123.Cutting treatmenting part 123 is cut apart the data of AV after multiplexed by each predetermined distance, sends to record with impact damper 114.At this moment, dummy section management department 125 guarantees 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 through 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 (the Universal Disk Format: universal disc format) as the file system format that uses in the explanation of the present invention is described.The instance that constitutes with the directories/files shown in the UDF record diagram 3 (a) shown in Fig. 3 (b).

AVDP among the figure (Anchor Volume Descriptor Pointer: anchor formula Volume Descriptor pointer) 602 be equivalent to be used to explore the management information of UDF entrance (entry point), be recorded in the 256th sector, a N sector or N-256 sector (N is the largest logical sector numbers) 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 up of logical block sequence number and logical block number, be called " extent ").The set of FE management extent through 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 >

Explain that with Fig. 4 the file of this embodiment 1, catalogue constitute.The data storage that will be referred to this 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 through 1 time, is MPEG-2PS (Program Stream: form program stream).Post-recorded data file (SHRP0001.PRE) is to be used to guarantee post-recorded usefulness zone and to 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 that the file by which interval information of above-mentioned stream of which sequential reproduction or data is specified in storage.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, record management wants to reproduce the primary flow management information file of data or the filename and the interval of wanting to reproduce of post-recorded data management information in order.In addition, the data formation of each file is described in the back.

< form of AV stream >

The formation of the AV stream that uses in this 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 guarantees 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 is of the back.

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 up 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 up 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 up of the acoustic wave form sampled point of 1152 points.In SF 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 up 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 as shown in Figure 6, and the Continuous Area (CA) individual by integer constitutes.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 up of the individual ECG 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, record is filled and divided into groups, and 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) with the primary flow file in the SCR and the PTS of corresponding audio pack consistent.Thus, through come to write again the corresponding audio pack among the CU by the audio pack among the CA, can come more easily to replace the audio frequency of primary flow by the post-recorded data.

< configuration on dish >

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 in CD 106, before CU, disposes corresponding CA (Fig. 1 (b)).

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 is of the back, when reproducing non-destruction edited result, suspends the possibility of reproducing and reduce.In addition, through being configured to read the little CA of size before the CU, thereby can suppress the buffer-stored tolerance that reproduced in synchronization is used.

< CU unit confirms method >

Definite method of CU recovery time is described with Fig. 7 and Fig. 8.Confirm 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, confirm the CU recovery time; When using these devices with algorithm execution 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 use data from coiling to read 500 to reproduce with data and to dish 500 record post-recorded 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 with impact damper 504 from track buffer 502.

Audio coder 509 is used data to post-recorded with impact damper 504 output post-recorded with the AAU cycle.Through this output, write post-recorded again with the corresponding CA piece in the impact damper 504.Post-recorded is carried out through 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 through 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 this 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 explanation 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. repeat-6. action the back.

With regard to said 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 said situation of carrying out post-recorded with reference to the post-recorded algorithm.

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

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

Te(i)≥Tr(i)+Tw(i)…(1)

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

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

$\underset{i}{\mathrm{\&Sigma;}}\mathrm{Te}\left(i\right)\&GreaterEqual;\underset{i}{\mathrm{\&Sigma;}}(\mathrm{Tr}\left(i\right)+\mathrm{Tw}\left(i\right))\&CenterDot;\&CenterDot;\&CenterDot;\left(2\right)$

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

Tr (i) in the formula (1) satisfies following formula (3) when respectively the maximum bit rate of maximum bit rate in the primary flow and post-recorded audio stream being made as Ro, Ra.In addition, Rs representes 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 stated, so can not produce the access in the CA record.Thus, can shorten the time of following the CA record, as a result of, can the lower limit of CU recovery time 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 representes 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 the CU recovery time lower limit Temin that, can guarantee 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 post-recorded with the reproduced in synchronization required delay memory-aided maximum of sound with common sound, and guarantees to reproduce interchangeability.In addition, in this 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 this 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 for the condition of executive real-time post-recorded strict (suspend reproduce with data read during long); As long as so executive real-time post-recorded non-synchronously; 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 as shown in Figure 9, is made up of about the p_attribute () of the whole attribute information of the post-recorded data file 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 whole attribute information of the primary flow file of this document management, storage storage.

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

VU_flags () comprises sign first_unit_flag shown in Figure 11 (a).First_unit_flag is the information of 1 bit, and shown in Figure 11 (b), 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 () shown in Figure 12 (b), by expression about the CA_flags of the various attribute informations of regulation CA, storage corresponding to the CA_PTS of the PTS (Presentation Time Stamp) of the beginning display frame of the CU of regulation CA and storage CA_PN formation apart from the relative bag sequence number of file beginning.Can specify the position corresponding to the CA of the specific PTS in the primary flow through CA_PTS and CA_PN, CA_PN representes to write down the positional information of the 1st continuum of CA and CU, in other words, the beginning positional information of expression CA.

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.

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

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

Last read-me message file.Program information file, PIF is shown in figure 14, by the pg_attribute () and the scene_table () formation of storage about the information of each scene of configuration program of the whole attribute information of stored programme information.

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 of recovery time of sc_start_PTS and store predetermined scene of sc_filename, the regulation scene is reproduced in storage from the somewhere of this primary flow information of filename of primary flow management information file that is comprised the primary flow file of regulation scene by storage administration constitutes.

< processing during record >

Below, with reference to the process flow diagram of Figure 16 the processing when user 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, confirm the formation of stream or the formation (S701) of continuum.When establishing 1VU and constitute by the 1GOP15 frame, through 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 in the voice data of 3 seconds sizes, to add packet header or packets headers is confirmed.As stated, the processing of above-mentioned S701 is equivalent to will be divided into as the primary flow of AV data with as the post-recorded data of its associated data by each predetermined distance the 1st step of part A V data (CU: i.e. 6 VU) and partial association data (CA).

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, let the user know and can not record (S702).

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

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 stated, 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 said part A V data of continuous recording and said partial association data in the 1st continuum.

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

In S709, indicated under the situation of end of record (EOR), handled below carrying out.At first, to the data of record with not enough 32KB in the impact damper, the additional virtual data at the end become 32KB (S710).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, the file system management information of this moment also can constitute CA and CU are processed into different files.

As stated; The processing of above-mentioned S716 is equivalent to the 4th step of log file system management messages on said recording medium; This document system management messages be used for said part A V data and said partial association data respectively as different file managements in, management is processed into information that different files use with said partial association data with said the 1st continuum with said part A V data.

In addition, the processing of above-mentioned S715 is equivalent to the 5th step, with reproduction zero hour of said part A V data, be recorded in the said recording medium with the corresponding informance of the positional information of said 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.With the result of each encoder encodes send to audio recording with impact damper 119 and videograph with 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 with 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 record 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 explain 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), with reference to holding within the scene_info corresponding to following scene sequence number; The scene reproduction of stating after the execution (S904) adds 1 (S905) with the scene sequence number that finishes.

Below, light field scape reproduction processes with Figure 18.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 below the sc_start_PTS and video_unit_info () with maximum VU_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 below the sc_start_PTS and continuous_area_info () with maximum CA_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, from the primary flow file, reads VU (S805).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), through with reference to the first_unit_flag among the 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) through 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 from CD 106, reading, and following the execution deciphered processing.At first, the VU that reads is sent to multiplexer 112, take out video PES grouping and audio frequency PES and divide into groups, video PES is divided into groups to send to rabbit with impact damper 111, audio frequency PES is divided into groups to send to audio reproducing with 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 this 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 begins near the VU the CU terminal, the stand-by time of being read by the data of the generation of the scene from CA to VU also needs only 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 from dish in week extend to most peripheral.Therefore, compare with this 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 with the beginning scene reproduction, and the result of the post-recorded data of will encoding sends to audio recording with impact damper 119 with the form that PES divides into groups.113 groups of bag PES of multiplexer divide into groups, and send to record with impact damper 114.At this moment, make the PTS of SCR and packets headers in packet header 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.Through from the PTS of the current CU that is deciphering with reference to continuous_area_table (), obtain the record object the CA position.

When CA writes down, meet with under the situation of fault, the CA in the discarded record is recorded in CA in other zone again.This is to reduce because of the posting field failover of the CA in the record, can not the data that the CU recovery time of correspondence is big or small be recorded among the CA.At this moment, change to 0, can know before the CU of correspondence, not have CA through 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 through can know the not interval of continuous recording CA and CU with reference to 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.

< variation of embodiment 1 >

In this 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 the part of CA only, need from bag, not extract AAU rear substitution AAU out and organize formality such as packetize once more.

In addition, in this 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 this 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 the part of CA only, as long as write the bag that comprises the AAU that wants to rewrite again.

In addition, in this 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 when initially recording, considers the surplus of reply fault, confirms the size of CA, and when post-recorded, detects 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 this embodiment 1,,, certainly, as long as corresponding, no matter be that 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 this 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.

This embodiment 2 is with the difference of embodiment 1: on recording medium, dispose a plurality of data of carrying out reproduced in synchronization in the embodiment 1 continuously; Each data are managed as different files; On the contrary, in this embodiment 2,, prerequisite is positioned on the identical recovery time axle although being each data; 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 this 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 formation >

With MPEG-2PS form multiplex video, voice data, press each angle recordings in different files.In the instance 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.

< configuration on dish >

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 configuration alternately on dish 2001 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 of the realization angle switching the same, reproduce each data files 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.

This embodiment 3 is with the difference of embodiment 1: in embodiment 1; Manage post-recorded with the zone by a file (being the post-recorded data file (SHRP0001.PRE) among Fig. 4); On the contrary; In this 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 this embodiment 3 is similar with embodiment 1, so difference only is described.

< file, catalogue constitute >

The file of this 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.OMI), primary flow file (SHRP0001.M2P) and the embodiment 1 is identical.

When recording, to a post-recorded zone reservation of 1 primary flow file 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 through non-destruction recording the back, and memory overlay is shown in title or the image of handwriting on the video.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 through 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.

< form of AV stream >

The form of AV stream is the same with the formation of the embodiment of explaining with reference to Fig. 51.

< 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 up 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.

< configuration on dish >

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

Like this, through importing post-recorded zone reservation file, append several data easily from behind as the vacant file in management post-recorded zone.In addition, through 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 program information file, PIF of this embodiment 3 and embodiment 1 (with reference to Figure 14) is: append and manage the voice data that after recording, appends and the subaudio_table () and the graphics_table () of graph data respectively.

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, and shown in Figure 27 (b), under the situation of 0b, the voice data of expression management or graphic file under the situation of 1b, are illustrated in before corresponding (reproduced in synchronization) CU not before (reproduced in synchronization) CU of correspondence.Through with reference to this sign, know and suspend the possibility of reproducing when reproducing non-destruction edited result.That is, if this is masked as 0b, then can know the tracking of generation to CA, it is high to suspend the possibility of reproducing.

< CU unit confirms method >

CU unit confirms 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 of explaining with reference to Figure 16 1.

< processing during reproduction >

Below, explain from the user program of executed post-recorded has been indicated the 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 this 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 below the sc_start_PTS and video_unit_info () with maximum VU_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 graphic file and the voice data (S802 ') of carrying out reproduced in synchronization with the CU of the current VU of comprising.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 from the primary flow file, to read VU (S805) according to this address.Then, judge whether that this scene finishes (S806).Particularly, be more than the sc_duration among the scene_info () as if current scene recovery time, then this scene finishes.

If the reproduction of scene does not finish, then then the VU sequence number is increased (S807), with reference to the first_unit_flag among the video_unit_info ().At this moment; If first_unit_flag () is 1; The VU that then is judged as this video_unit_info () management is the beginning (S808) of CU; Confirm to carry out the existing of graphic file and voice data (S809 ') of reproduced in synchronization 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, coding result is sent to audio recording with impact damper 119 with the form that PES divides into groups with the reproduction beginning.113 couples of PES of multiplexer divide into groups to package, and send to record with impact damper 114.At this moment, make the PTS of SCR and packets headers in packet header 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.Through from the PTS of the current CU that is deciphering, obtaining the CA position of writing down 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 as follows and handle.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 with reference to continuous_area_info (), can be only after each CA record data.

< 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 graphical 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, through on the dish with the approaching position of the video data that reproduces simultaneously on the recording geometry data, need not be used for when rabbit, reading the tracking of graph data thus.Time-out or the power consumption etc. that therefore, can suppress the rabbit that tracking causes.

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.Through indicating with reference to this when reproducing, can before rabbit, let the user know that in rabbit, also not producing rabbit suspends.

< variation of embodiment 3 >

In this 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 can graphic file or post-recorded data file 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 this 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 this embodiment 4 is additional to be the change that configuration and CU unit to dish in the embodiment 1 confirm 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.

< form of AV stream >

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

< post-recorded data file >

Because the same, so omit explanation with embodiment 1.

< configuration on dish >

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 shown in enforcement mode 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 instances.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, through 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 said 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 confirms method >

Definite method of CU recovery time is described with Figure 30.Confirm 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 confirm the CU recovery time, so that seamless-reproducedly when stating device in the use can not show one's slip with algorithm execution post-recorded.

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.

Instance shown in Figure 30 (a), 30 (b).Figure 30 (a) is an instance 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 instance 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 CU#N+1 and finish until the terminal of continuum, then pick-up is moved to CA#M, the post-recorded data are write down in (3) in CA#M, (4) move to pick-up the remainder of CU#N+1.

Through 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 this embodiment 4 only otherwise specify, the identical implication of expression and embodiment 1 then.

Tw (i) in the formula (1) is the same with the formula (4) of embodiment 1, but with regard to Tr (i), shown in (8), is the form of from the formula (3) of embodiment 1, removing Ta, 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 this embodiment 4, because when CU reads the 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 with finding 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).

$\mathrm{Te}\left(i\right)\&GreaterEqual;\frac{2\mathrm{Ta}\&times;\mathrm{Rs}}{\mathrm{Rs}-\mathrm{Ro}-2\mathrm{Ra}}\&CenterDot;\&CenterDot;\&CenterDot;\left(9\right)$

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

$\mathrm{Te}\min =\frac{2\mathrm{Ta}\&times;\mathrm{Rs}}{\mathrm{Rs}-\mathrm{Ro}-2\mathrm{Ra}}\&CenterDot;\&CenterDot;\&CenterDot;\left(10\right)$

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

$\mathrm{Te}\max =\frac{2\mathrm{Ta}\&times;\mathrm{Rs}}{\mathrm{Rs}-\mathrm{Ro}-2\mathrm{Ra}}+\mathrm{Tv}\max \&CenterDot;\&CenterDot;\&CenterDot;\left(11\right)$

The higher limit of setting the CU recovery time is in order to estimate that post-recorded is with the maximum of the required delay of the sound and the reproduced in synchronization of sound usually with storer, assurance reproduction interchangeability.In addition, in this 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 this embodiment, as long as the capacity of required track buffer 502 during post-recorded is based on following consideration.At first, with regard to this 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 at the CU end.In other words, for the CU cutting recording in two continuums and its most of data be present in the situation in the existing continuum.

At this moment, if according to above-mentioned with reference to the post-recorded algorithm, carry out to CA record post-recorded data before at the CU end, 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.Corresponding for 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, need only the capacity Bpb that guarantees 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.

< variation of embodiment 4 >

This embodiment 4 is explained 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 like 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 this embodiment.

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

Claims (1)

1. an AV data reproducing method reproduces the recording medium that has write down AV data and the 2nd AV data at least, and AV data are formed in a scene switching reproduction on the identical time shaft with the 2nd AV data, it is characterized in that,

Said AV data and the 2nd AV data, and are recorded on the said recording medium to switch mode reproduction, the said AV of first data and said second portion AV data alternate configurations each other with the cutting apart under the state that unit is divided into the AV of first data and second portion AV data of regulation respectively;

And; File system management information and program information file, PIF on said recording medium, have been write down; When wherein said file system management information is managed said AV data and said the 2nd AV data as different files; It is the information of different files with said the 2nd AV data processing that management is used for said AV data, and which the interval information by said AV data of which sequential reproduction and said the 2nd AV data is specified in the storage of said program information file, PIF;

From recording medium, obtain said file system management information and said program information file, PIF.

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