CN1296583A

CN1296583A - Method and device for recording/reproducing digital data

Info

Publication number: CN1296583A
Application number: CN00800323A
Authority: CN
Inventors: 高桥正之
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 1999-02-17
Filing date: 2000-02-16
Publication date: 2001-05-23
Anticipated expiration: 2020-02-16
Also published as: KR20010042757A; KR100421343B1; CN1163830C; WO2000049503A1; ID28733A

Abstract

A method and a device for recording/reproducing digital data, capable of preventing a file destruction and data missing at an abort time such as a power outage during digital data recording/reproducing on/from a disk recording medium, the device comprising a file structure managing unit (25) for recording data onto a disk recording medium having a file structure in which recordable clusters are linked together, and a file restoring unit (26) for constructing, based on data format information, as a recording file digital data recorded during a period from a data recording start to an abort time after a restoration from the abort when the abort occurred.

Description

Digital data record renovation process and digital data record regenerating unit

The present invention relates to carry out the digital data record renovation process and the digital data record regenerating unit of the record regenerating of the numerical data on the disc record media, the file destroyed when abnormal ending such as particularly preventing to have a power failure and the digital data record renovation process of loss of data and use the digital data record regenerating unit of this digital data record renovation process.

So far, as preventing file destroyed that takes place and the method for losing when having a power failure, it is disclosed like that known method is opened flat 8-255001 communique as the spy, is to use when power failure the method for the no power failure power supply of supply power temporarily.

Below, the structure and the action of the no power failure power-supply system that explanation has earlier with reference to Figure 16.

Figure 16 is the figure that represents the structure of the no power failure power-supply system that has earlier.

The no power failure power-supply system that has earlier has the input-output unit 1302 of the input and output of carrying out data, the control of control signal that receives the input/output signal of this input-output unit 1302 and be used for the control and treatment process to input-output unit 1302 output is with computer 1301, during power failure temporarily the no power failure power supply 1304 of supply power and receive this no power failure power supply 1304 of expression source power supply power down mode the source power supply break signal and when this source power supply signal certain time is above, just be judged to be the action checking circuit 1303 of power failure.

Control receives to represent to be judged to be with computer 1301 and moves behind the signal of power failure of checking circuit 1303, just active file is closed processing.In addition, action checking circuit 1303 monitors the unusual of supply voltage, just utilizes telephone line automatic informing device 1305 to carry out automatic informing when unusual.

Like this, according to the no power failure power-supply system that has earlier, when taking place to have a power failure, control just can be carried out the processing of closing of active file with computer 1301, so, the destruction of active file or losing of data can not take place when having a power failure generation.

Yet as the medium of the digital data record regenerating unit that uses in family, having with VCR is the tape media of representative, still, used at present can random access disk and disc record media such as photomagneto disk replace tape media.

In the tape media that formerly has, when when writing down, power failure having taken place, though the image before the in store power failure, but, during the situation of the disc record media that computing machine is used, incorrect if end of record (EOR) is handled, the view data when all losing till have a power failure from start-of-record.

Below, use Figure 17 that the reason that file destroyed and loss of data take place when having a power failure when writing down on the disc record media that computing machine is used is described.

Figure 17 is the figure of expression by the file logging structure in the posting field of the disc record media of the OS employing of MS-Windows (Microsoft's makings) etc., computing machine.

The posting field of disc record media is made of root directory 1401, file allocation table 1402 and bunches 1403.

Root directory 1401 keeps being stored in the title of the file on the disc record media and the beginning bunch number of file.File allocation table 1402 keeps bunches 1403 link information of configuration files.Bunches 1403 is least unit of the record regenerating of disc record media, keeps real data.

In the example of Figure 17, root directory 1401 is illustrated on this disc record media and begins to store the file that is called Datal from bunch number 0002, and file allocation table 1402 expression Datal are by the order composition data of bunch number 0002, bunch number 0003 and bunch number 0004.Therefore, the real data of expression Datal is stored in the zone of bunches 1403 bunch number 0002, bunch number 0003 and bunch number 0004.The FFFF of file allocation table 1402 is bunch numbers of last bunch of expression file.

When carrying out data recording, at first a filename and a beginning bunch number are signed in in the root directory 1401, upgrade bunches 1403 link information by file allocation table 1402, and real data recorded in each zone of bunches 1403.

Yet root directory 1401 and file allocation table 1402 be fixing the existence in disc record media, and zone of the disc record media beyond root directory 1401 and the file allocation table 1402 is used in each zone of bunches 1403.

When carrying out data recording, write fashionablely to each zone of file allocation table 1402 and bunches 1403, write fashionable to bunches 1403 at every turn, bunch link information that all must updating file allocation table 1402, so, must search for write head, thereby writing speed is very slow to disc record media.

Therefore, adopt the information of updating file allocation table 1402 in storer, data are write in bunches 1403, handling in the end of record (EOR) of data is that closing of a file is when handling, with the method for message reflection on disc record media of file allocation table 1402.

In the process that writes down to above-mentioned disc record media, in when, before carrying out the end of record (EOR) processing power failure having taken place, owing to do not upgrade the file allocation table 1402 of disc record media, so, till from start-of-record to power failure, although data have recorded in bunches 1403, the link information of the file allocation table 1402 of the link information of expression bunches 1403 all will be lost, thereby losing of file destroyed and data will be taken place.

In addition, use as home-use digital data record regenerating unit, will become expensive structure as the method for the no power failure power supply that has earlier of the countermeasure of loss of data.

The present invention is exactly in view of the above problems and motion that purpose aims to provide digital data record renovation process and the digital data record regenerating unit that or not cheapness of file destroyed and loss of data when carrying out data recording when abnormal endings such as power failure have taken place.

The described digital data record renovation process of claim 1 of the present invention be with the record least unit of data on the disc record media bunch be the digital data record renovation process of unit record regeneration numerical data, it is characterized in that: be included in the 1st step of constructing bunch interconnective file structure that can write down on the above-mentioned disc record media, from can write down bunch the 2nd step of beginning opening entry numerical data and the 3rd step that numerical data that will be from record beginning bunch to end of record (EOR) bunch constitutes log file.

According to the present invention, even abnormal endings such as power failure have taken place in digital data record, the zone of having write down numerical data in energising when beginning once more will exist as the part of file, after abnormal ending recovers, recorded data till can regenerating from the start-of-record to the abnormal ending, thereby the losing of file destroyed can prevent at an easy rate that abnormal ending from taking place the time and data.

The described digital data record renovation process of claim 2 of the present invention is characterised in that: in the described digital data record renovation process of claim 1, in the data recording of above-mentioned the 2nd step way during the data recording abnormal ending, and then be included in above-mentioned abnormal ending recover the back detect data recording abnormal ending step and will constitute the step of log file from data recording begins to be write down till abnormal ending numerical data according to the format information of numerical data.

According to the present invention, when even abnormal endings such as power failure have taken place in digital data record, recorded data till energising not only can be regenerated from the start-of-record to the abnormal ending when beginning once more, and can will be able to reverting to and the identical log file of file that carries out common data recording end process by recording section, thereby the losing of file destroyed can prevent at an easy rate that abnormal ending from taking place the time and data.

The described digital data record renovation process of claim 3 of the present invention is characterised in that: in the described digital data record renovation process of claim 2, the format information of above-mentioned numerical data is the sync byte of transmission package.

According to the present invention, in digital data record, when even power failure having taken place having waited abnormal ending, recorded data till energising not only can be regenerated from the start-of-record to the abnormal ending when beginning once more, and the losing of file destroyed can prevent at an easy rate that abnormal ending from taking place the time and data.

The described digital data record renovation process of claim 4 of the present invention is characterised in that: in the described digital data record renovation process of claim 2, the format information of above-mentioned numerical data is a temporal information.

The described digital data record renovation process of claim 5 of the present invention be with the record least unit of data on the disc record media bunch be the digital data record renovation process of unit record regeneration numerical data, it is characterized in that: comprise file identifier and bunch link information are appended to step in recording on the numerical data bunch, recover the back in above-mentioned abnormal ending when abnormal ending has taken place data recording in data recording way and detect the data recording step of abnormal ending and the step of the link information of repairing bunch according to the above-mentioned file identifier in recording bunch and above-mentioned bunch of link information.

According to the present invention, in digital data record, when even abnormal ending has taken place, can repair from the start-of-record to the abnormal ending in when beginning energising till the file allocation table of recorded data file, thereby can recover to handle as document form by regenerating section.And, can prevent losing of file destroyed when abnormal ending takes place and data at an easy rate.

The described digital data record regenerating unit of claim 6 of the present invention is being characterised in that: have with the record least unit of data bunch be the disc record media of unit storage numerical data and numerical data stored on the above-mentioned disc record media or from the above-mentioned disc record media the file structure management department of reading number data, above-mentioned disc record media has all bunch interconnective in advance file structures.

The described digital data record regenerating unit of claim 7 of the present invention is characterised in that: in the described digital data record regenerating unit of claim 6, above-mentioned file structure management department has, and the file that the numerical data that will begin to be write down from data recording till abnormal ending in the record way of numerical data during the data recording abnormal ending, after above-mentioned abnormal ending recovers, according to the format information of numerical data constitutes record data recovers handling part.

According to the present invention, even when abnormal endings such as power failure have taken place in digital data record, recorded data till energising not only can be regenerated from the start-of-record to the abnormal ending when beginning once more, and can will be able to reverting to and the identical log file of file that carries out common data recording end process by recording section, thereby the losing of file destroyed can prevent at an easy rate that abnormal ending from taking place the time and data.

The described digital data record regenerating unit of claim 8 of the present invention is characterised in that: in the described digital data record regenerating unit of claim 7, above-mentioned format information is the sync byte of transmission package.

The described digital data record regenerating unit of claim 9 of the present invention is characterised in that: in the described digital data record regenerating unit of claim 7, above-mentioned format information is a temporal information.

The described digital data record regenerating unit of claim 10 of the present invention is characterised in that: having bunch is the disc record media of unit storage numerical data with the record least unit of data, with with store into after numerical data affix file identifier and bunch link information above-mentioned disc record media bunch in or from above-mentioned disc record media the file structure management department of reading number data, above-mentioned file structure management department has, in the record way of numerical data during the data recording abnormal ending, after above-mentioned abnormal ending recovers, according to above-mentioned file identifier and the above-mentioned bunch of link information in being recorded in bunch, the file that will constitute record data from data recording begins to be write down till abnormal ending numerical data recovers handling part.

According to the present invention, even abnormal ending has taken place in digital data record, the file allocation table of recorded data file till energising can be repaired from the start-of-record to the abnormal ending when beginning once more, thus can will be able to revert to document form by regenerating section.And, can prevent losing of file destroyed when abnormal ending takes place and data at an easy rate.

The described digital data record regenerating unit of claim 11 of the present invention is characterised in that: in the described digital data record regenerating unit of arbitrary claim of claim 7～10, and then have the digital broadcasting acceptance division of receiving digital broadcast and whether be the controller that the charge information of charging broadcast is controlled above-mentioned file structure management department according to the digital broadcasting that received of expression, when in receiving the charge digital broadcasting, the abnormal ending of data recording having taken place, after abnormal ending recovers, discard data recording and do not charge thereby above-mentioned controller just is controlled to be.

According to the present invention,,, just can recover because file is before interrupted in abnormal ending if digital broadcasting is not a charging broadcast even when power failure having taken place when data recording waiting abnormal ending.In addition, if the digital broadcasting of writing down interruption owing to abnormal ending is a charging broadcast, by discarded in the way before the data of record, just can this charging broadcast not chargeed, thereby can carry out suitable charging to the user.

The described digital data record regenerating unit of claim 12 of the present invention is the digital data record regenerating unit that carries out the record regenerating of numerical data, it is characterized in that: a plurality of disk storage portion with record numerical data with the managed storage numerical data bunch recorded file structure management department in the different disk storage portions with the file allocation table of the link information of this bunch.

According to the present invention, can carry out dish visit at a high speed, even and when abnormal ending such as power failure has taken place in digital data record, when energising begins once more, also recorded data till from the start-of-record to the abnormal ending can be read in as document form normally.And, can prevent losing of file flounder when abnormal ending takes place and data at an easy rate.

Fig. 1 is the block diagram of structure of the digital data record regenerating unit of the expression embodiment of the invention 1.

Fig. 2 (a) is the figure of the file structure of the data of disc record media of the expression embodiment of the invention 1 when not writing down.

The figure of the file structure when Fig. 2 (b) is the data recording of disc record media of the expression embodiment of the invention 1.

Fig. 2 (c) is the figure of the file structure of the data recording of the disc record media of the expression embodiment of the invention 1 when finishing.

Fig. 3 is the process flow diagram of the digital data record renovation process of the expression embodiment of the invention 1.

Fig. 4 is the block diagram of structure of the digital data record regenerating unit of the expression embodiment of the invention 2.

Fig. 5 is the figure of structure of the transmission package of the expression embodiment of the invention 2.

Fig. 6 is that the file of energising when beginning once more of the expression embodiment of the invention 2 recovers the process flow diagram handled.

Fig. 7 is the figure of data layout that is used to illustrate the PES data of the embodiment of the invention 3.

Fig. 8 is that the file of energising when beginning once more of the expression embodiment of the invention 3 recovers the process flow diagram handled.

Fig. 9 is the figure of file structure of the disc record media of the expression embodiment of the invention 4.

Figure 10 be the expression embodiment of the invention 4 bunch the figure of data structure.

The figure of file structure when Figure 11 (a) is the abnormal endings such as power failure of the expression embodiment of the invention 4.

When Figure 11 (b) is the abnormal endings such as power failure of the expression embodiment of the invention 4 bunch the figure of state.

Figure 12 is that the file of energising when beginning once more of the expression embodiment of the invention 4 recovers the process flow diagram handled.

Figure 13 (a) is the figure of structure of the digital data record regenerating unit of the expression embodiment of the invention 5.

Figure 13 (b) is the figure of the charging broadcast charge information of the expression embodiment of the invention 5.

Figure 14 is the process flow diagram of processing of the digital data record regeneration control part of the expression embodiment of the invention 5.

Figure 15 is the block diagram of structure of the digital data record regenerating unit of the expression embodiment of the invention 6.

Figure 17 is the figure that represents the file structure that has earlier.

Embodiment 1.

Below, with reference to the digital data record renovation process and the digital data record regenerating unit of the description of drawings embodiment of the invention 1.The digital data record renovation process of present embodiment 1, construct bunch interconnective zone that can write down that can write down in advance on disc record media, the numerical data till will be from record beginning bunch to end of record (EOR) when end of record (EOR) bunch constitutes log file.

Fig. 1 is the block diagram of structure of the digital data record regenerating unit of expression present embodiment 1.

Digital data record regenerating unit 20 has data input and output portion 21, file structure management department 22 and disc record media 23.

The numerical data input machine receiving digital data that data input and output portion 21 connects from the outside when carrying out Data Receiving is to file structure management department 22 output digital datas; When carrying out data reproduction, from file structure management department 22 receiving digital datas, the numerical data regeneration machine output digital data that connects to the outside.

The file structure of file structure management department 22 management disc record medias 23, when carrying out the data input, with digital data record to disc record media 23, when carrying out data output, reading number data from disc record media 23.

Disc record media 23 is the recording medium of the plate-like of storage numerical data.

Fig. 2 (a)～Fig. 2 (c) is the figure of the file structure of indicating panel recording medium 23.

In Fig. 2 (a)～Fig. 2 (c), the file structure of disc record media 23 is made of root directory 101, file allocation table 102 and bunches 103.

Root directory 101 keep beginning bunch number, record that can posting field data file title and store the beginning bunch number of the data of this data file.File allocation table 102 is come the annexation of bunches 103 in the management data file to the respective cluster number position of file allocation table 102 by bunch number storage that will be connected with corresponding employing.Bunches 103 is minimum access units of disc record media 23, is LBA (Logical Block Addressing) with continuous digital distribution, the numerical data of storing data files.

Fig. 2 (a) is the figure of the file structure of expression data when not writing down.

In Fig. 2 (a), in root directory 101, there is not the data file of record, there is the free space that indication can posting field, this free space becomes from the structure of bunch number 0002 beginning.FFFF in the file allocation table 102 represent not exist be connected with this bunch bunches 103, but final bunch.

File structure when not writing down as data, free space become the zone of order with whole bunches of connections from bunch number 0002, thus configuration file allocation table 102.

Below, use the action of Fig. 1, Fig. 2 (a)～Fig. 2 (c) and Fig. 3 declare record data.

Fig. 3 is the process flow diagram of expression digital data record renovation process.

At first, when the format of disc record media 23 or before the start-of-record, the such posting field of disc record media 23 the constructed file structure (step S31) that in advance all bunch number connected of file structure management department 22 shown in Fig. 2 (a).After this document structure is constructed, begin to carry out the record of data.

The not shown numerical data input machine input data input and output portion 21 that numerical data connects from the outside.Data input and output portion 21 exports this numerical data to file structure management department 22.

Fig. 2 (b) is the figure of the file structure of expression data recording when beginning.

In Fig. 2 (b), when data recording begins, the beginning bunch number that file structure management department 22 will distribute to the free space of root directory 101 copies in the beginning bunch number storage zone of data file video, does not exist bunches 103 FFFF of distribution to store in the beginning bunch number storage zone of the free space that expression can posting field expression.

Because the change of root directory 101, the structure of file allocation table 102 just become the data file representation of video shot from bunch number 0002 begin to be linked in sequence whole bunches zone.

When carrying out data recording, when start-of-record from bunches 103 the beginning opening entry of distributing to the data file video numerical data (step S32) of view data etc. for example.

The figure of the file structure when Fig. 2 (c) is the end of expression data recording.

In Fig. 2 (c), when data recording finishes, file structure management department 22 will represent that final bunch FFFF of data file stores into and the last bunch 103 corresponding position that is recorded in file allocation table 102.

And, in root directory 101, will store in the beginning bunch number storage zone of data of the free space that expression can posting field with bunch 103 bunch numbers that are connected (being 2000 at this moment) of last record.By such processing, when the data file of next time, just can use from the zone of the beginning bunch beginning of distributing to the free space that expression can posting field.Like this, the numerical data from record beginning bunch to end of record (EOR) bunch just constitutes log file (step S33).

In file structure as described above, when abnormal endings such as power failure have taken place in data recording process, for example central when abnormal ending has taken place what write bunch number 1FFF, file structure is exactly the state of Fig. 2 (b), and data file just becomes the state that begins to be connected in advance when 2000 later not records bunch never write down of finishing from bunch number 0002 to bunch record of number 1FFF bunch.

Like this, digital data record renovation process and digital data record regenerating unit according to present embodiment 1, by having the disc record media 23 that uses all bunch file structures that connect in advance that can posting field, when end of record (EOR), will represent final bunch identifier store into last record data bunch in, and will with last record data bunch be connected bunch the file structure management department of number storage in the beginning that can posting field bunch, even when power failure having taken place in digital data record having waited abnormal ending, when energising begins once more, also the zone of having write down numerical data can be existed as the part of file and after abnormal ending recovers, can regenerate from the start-of-record to the abnormal ending till recorded data.

In present embodiment 1, as expression do not exist can posting field identifier, be to use FFFF, still, also can use other the value that does not exist as bunch number.

Embodiment 2.

Below, with reference to the digital data record renovation process and the digital data record regenerating unit of the description of drawings embodiment of the invention 2.The digital data record renovation process of present embodiment 2, be in the processing of embodiment 1, added in order to ask the beginning bunch number that interrupts file check bunch data in whether the step of losing of sync byte is arranged.

The file structure of the disc record media of present embodiment 2 is identical with the file structure of the disc record media of embodiment 1, shown in Fig. 2 (a)～Fig. 2 (c).The FFFF in the beginning bunch number storage zone that is stored in the free space that expression can posting field of Fig. 2 (b), expression is in data recording in present embodiment 2.

Fig. 4 is the block diagram of structure of the digital data record regenerating unit of expression present embodiment 2.

Digital data record regenerating unit 24 has data input and output portion 21, file structure management department 25 and disc record media 23.File structure management department 25 and then have file and recover handling part 26.Identical with action about file structure management department 25 with embodiment 1 with file recovery handling part 26 parts structure in addition, so, its explanation omitted.

The file structure of file structure management department 25 management disc record medias 23, when carrying out the data input, with digital data record in disc record media 23, when carrying out data output, reading number data from disc record media 23.

File recovers to recover to handle when the abnormal ending of data recording such as for example powers failure has taken place when the record of numerical data handling part 26, so that begin from data recording that data till abnormal ending are the same when carrying out common end process to become 1 log file switching on when beginning once more.

Fig. 5 is the figure of expression as the structure of the transmission package of the data mode of digital broadcasting.

In Fig. 5, transmission package is by constituting as the transmission header 201 of heading message with as the service load 202 of the real data of numerical data.Transmission package is a regular length.In the beginning of transmission header 201, exist to be used to obtain synchronous sync byte 203.The data that digital broadcasting is transmitted repeatedly by transmission package constitute.

Below, illustrate that the file when energising when having taken place in the way of disc record media 23 record data of the file structure shown in Fig. 2 (a)～Fig. 2 (c) that for example power failure waits abnormal ending begins once more recovers to handle.

Fig. 6 is that the file that expression is switched on when beginning once more recovers the process flow diagram of processing.Except situation about specifying, handle all and undertaken by file recovery handling part 26.

At first, at step S301,, whether judged in record handling interrupt by checking whether the beginning bunch number distribute to the free space that expression can posting field in the root directory 101 of Fig. 2 (b) is that expression is the FFFF in record.And if recording processing is not interrupted, the beginning bunch number of promptly distributing to free space is not FFFF, just finishes energising and begins once more to handle.If recording processing has been interrupted, promptly the beginning of free space bunch number is the FFFF in the expression record, just enters step S302, continues energising and begins once more to handle.

At step S302, from root directory 101, obtain the beginning bunch number that final bunch of (FFFF) unclosed record of being connected of file allocation table 102 interrupts file, as existing bunch.

Whether at step S303, judging has losing of sync byte 203 in existing bunch.If losing of sync byte 203 arranged, just judging has record to interrupt in existing bunch, and enters step S304.If there be not losing of sync byte 203, just judge not record interruption in existing bunch, and enter step S307.

At step S304, store final bunch FFFF of expression into existing bunch of corresponding file allocation table 102 bunch number position.

At step S305, from file allocation table 102, obtain existing bunch of bunch number afterwards, as free bunch of beginning.

At step S306, free bunch of beginning is stored in the beginning bunch number storage zone of free space of root directory 101.And, finish energising and begin once more to handle.

At step S307, judge whether after existing bunch bunch.If have be connected with existing bunch bunch, just enter step S308, if do not have after existing bunch bunch, just judge that recording processing has proceeded to final bunch, begin once more to handle thereby finish energising.

At step S308, from file allocation table 102, obtain bunch number after existing bunch, by with regard to this bunch number as existing bunch, upgrade existing bunch, and turn back to step S303, carry out the inspection of sync byte 203 repeatedly.

Below, the file when using concrete example explanation energising to begin once more recovers to handle.

For example suppose to bunch number 1FFF bunches 103 in power failure has taken place in the data recording of carrying out.At this moment, in the file of energising when beginning once more recovers to handle, when the beginning bunch number that interrupts file according to record confirms whether to have losing of sync byte 203, can not find sync byte 203 (step S303) with a bunch number 1FFF.Therefore, final bunch FFFF of expression data file is stored into the position (step S304) of bunch number 1FFF of file allocation table 102.And, in root directory 101, bunch number 2000 after bunch number 1FFF of record is at last stored in the beginning bunch number storage zone of the free space that expression can posting field, replace expression and be the FFFF (step S306) in record.Like this, just, identical file structure in the time of can reverting to end of record (EOR) normally shown in Fig. 2 (c).

Like this, digital data record renovation process and digital data record regenerating unit according to present embodiment 2, carry out the record of numerical data by the disc record media 23 that uses all bunch file structures that connect in advance that can posting field, even when abnormal endings such as power failure have taken place in digital data record, recorded data till energising not only can be regenerated from the start-of-record to the abnormal ending when beginning once more, and, can also will be able to revert to and the identical document form of file that carries out common data recording end process by recording section by using flexibly as free space that can posting field.

In present embodiment 2, be that the numerical data that will write down illustrates as transmission package, still,, equally also can implement even module data uses as sync byte by assembly is begun code.

In addition, as the method for obtaining the beginning bunch number that interrupts file, not only judge, and can judge according to the format information of other numerical datas according to whether having sync byte to lose.

Embodiment 3.

Below, with reference to the digital data record renovation process and the digital data record regenerating unit of the description of drawings embodiment of the invention 3.The digital data record renovation process of present embodiment 3 is the steps that will whether have sync byte to lose in the inspection of embodiment 2 bunch as losing or the step of the minimizing of PTS of underlined position whether in checking bunch.

The file structure of the disc record media of present embodiment 3 and digital data record the regenerating unit file structure with Fig. 2 (a)～Fig. 2 (c) and embodiment 2 shown in Figure 4 respectively are identical with the digital data record regenerating unit, and omit its explanation.Be stored in the FFFF in the beginning bunch number storage zone of the free space that the expression of Fig. 2 (b) can posting field, expression is in data recording in present embodiment 3.In addition, in present embodiment 3, the file of Fig. 4 recover handling part 26 by confirm marker bit lose or the minimizing of PTS is carried out file and is recovered to handle.

Fig. 7 is the figure that is used to illustrate as the data layout of the PES data that the service load portion of transmission package shown in Figure 5 is concentrated.

The PES data are by constituting as the packet header 401 of the information area of PES with as the bag data 402 of real data.PTS403 as the moment management information of regeneration output is arranged in bag data 401, and PTS403 is the value that increases by the order of data.In addition, in PTS403, always there is the marker bit 404 get 1 value.

Below, illustrate that the file when energising when having taken place in data recording way that for example powers failure waits abnormal ending begins once more recovers processing.

Fig. 8 is that the file that expression is switched on when beginning once more recovers the process flow diagram of processing.Step S501, S502 and step S503～S508 are respectively step S301 shown in Figure 6, the S302 of embodiment 2 and the step that step S303～S308 carries out same processing, omit its explanation.In addition, except situation about specifying, handle all and undertaken by file recovery handling part 26.

At step S503, judge in existing bunch losing or the minimizing of PTS403 of underlined position 404 whether.If losing or the minimizing of PTS403 of underlined position 404, just judging has record to interrupt in existing bunch, and enters step S504.If there be not losing or the minimizing of PTS403 of marker bit 404, just judge that in existing bunch record interrupts, and enter step S507.

Suppose for example to bunch number 1FFF bunches 103 in power failure has taken place in the data recording of carrying out.At this moment, in the file of energising when beginning once more recovered to handle, whether just often the beginning bunch number that interrupts file according to record confirmed PTS403, and in bunch number 1FFF, PTS403 is with regard to undesired (step S503).Therefore, final bunch FFFF of expression data file is stored into the position (step S504) of bunch number 1FFF of file allocation table 102.And, in root directory 101, bunch number 2000 after bunch number 1FFF of record is at last stored in the beginning bunch number storage zone of the free space that expression can posting field, replace expression and be the FFFF in record.(step S506).Like this, just, identical file structure in the time of can reverting to end of record (EOR) normally shown in Fig. 2 (c).

Like this, digital data record renovation process and digital data record regenerating unit according to present embodiment 3, carry out the record of numerical data by the disc record media 23 that uses all bunch file structures that connect in advance that can posting field, even when abnormal endings such as power failure have taken place in digital data record, recorded data till energising not only can be regenerated from the start-of-record to the abnormal ending when beginning once more, and, can also will be able to revert to and the identical document form of file that carries out common data recording end process by recording section by using flexibly as free space that can posting field.

In present embodiment 3, be that the numerical data that will write down illustrates as transmission package, still, even module data by utilizing temporal information, equally also can be implemented.

In addition, in embodiment 2 and 3, be identifier in record as expression, be to use FFFF, still, also can use not other a value that exists as bunch number.

Embodiment 4.

Below, with reference to the digital data record renovation process and the digital data record regenerating unit of the description of drawings embodiment of the invention 4.The digital data record renovation process of present embodiment 4 is provided with the zone that storage is used for the file ID of recognition data file in each bunch, carry out file according to this document ID and recover to handle.

The digital data record regenerating unit of the present embodiment 4 also digital data record regenerating unit with embodiment 2 is identical, by shown in Figure 4.

Fig. 9 is the figure of file structure of the disc record media 23 of expression present embodiment 4.

In Fig. 9, the posting field of disc record media 23 is made of root directory 601, file allocation table 602 and bunches 603.

The beginning bunch number of the title of the file of root directory 601 holding tray recording mediums 23 storages and the data of storage this document title.File allocation table 602 is managed bunches 603 annexation to respective cluster number position by bunch number storage after will this bunch.Bunches 603 is minimum access units of disc record media 23, and continuous numeral is distributed as LBA (Logical Block Addressing), the numerical data of storing data files.

When carrying out data recording, a filename and a beginning bunch number are signed in in the root directory 601, in file allocation table 602, upgrade bunches 603 link information, and with data recording in each zone of bunches 603.But, in order to coil visit at a high speed, carry out in the not shown storer that the file management portion 25 that is updated in of bunches 603 link information has, and the data of carrying out in bunches 603 write, when data write that closing of a file is handled when finishing, the link information of bunches 603 in the storer is written in the file allocation table 602 of disc record media 23.

Below, use the detailed data structure of Figure 10 explanation bunches 603.

Figure 10 is the figure of the data structure of expression bunches 603.

In Figure 10,1 bunch 603 when carrying out the record of numerical data by record recording of information information 701 and constitute as the numerical data 702 of real data.Recorded information 701 is made of the file ID 703 of recognition data file and bunch number 704 that is connected of this bunch of storage bunch number afterwards.As file ID 703, in the present embodiment 4, be to use the Hour Minute Second on days of representing start-of-record by American Standard Code for Information Interchange.

Figure 11 (a) is the figure that is illustrated among Fig. 9 the state of the file structure when data file video 1 promptly abnormal endings such as power failure taken place before the renewal of file allocation table 602 in the record of bunches 603 bunch number 0004.

In Figure 11 (a), root directory 801 and bunches 803 is normal states, and still, 802 of file allocation table become the state that does not have annexation.

Figure 11 (b) is the figure of the state of bunches 803 when being illustrated in handling interrupt in the record.

In Figure 11 (b), in the file ID 804 of each bunch of the numerical data 806 that has write data file video 1, stored whole identical start-of-records constantly, in connecting bunch number 805, stored a bunch annexation.Why bunches 4 connection bunch number 805 becomes " indefinite ", is illustrated in the connection bunch number 805 of this bunch 4 and has stored for example bunch number 1000 etc. of certain abnormal bunch of number.

Below, use Figure 12 to illustrate that the file when energising begins once more recovers to handle.

Figure 12 is that the file that expression is switched on when beginning once more recovers the process flow diagram of processing.Except situation about specifying, handle all and undertaken by file recovery handling part 26.

At first,, check in the root directory 801 of Figure 11 (a) bunch annexation of the file allocation table 802 that begins from the beginning bunch number of data file video 1, whether judged in record handling interrupt at step S901.And,,, just finish energising and begin once more to handle if promptly the annexation of file allocation table 802 is normal states if recording processing is not interrupted.On the other hand, if recording processing has been interrupted, just enter step S902.

At step S902, from root directory 801, obtain beginning bunch number that record interrupts file as existing bunch, and the file ID 804 that will start bunch is decided to be obj ect file ID.

In step 903, obtain existing bunch bunches 803 connection bunch number 805, as follow-up bunch.

At step S904, if follow-up bunch file ID 804 is different with obj ect file ID, just judging has record to interrupt in existing bunch, and enters step S905.On the other hand, if follow-up bunch file ID 804 is identical with obj ect file ID, just judges that the record that does not have data in existing bunch interrupts, and enter step S906.

At step S905, store final bunch FFFF of expression into existing bunch of corresponding file allocation table 802 bunch number position.And, finish energising and begin once more to handle.

At step S906,, recover bunch annexation, with existing bunch of value that is updated to follow-up bunch with existing bunch the position of follow-up bunch number storage to file allocation table 802.And, turn back to step S903, the inspection of the file ID 804 that carries out step S903 and step S904 of struggling against the corrosive influence.

Suppose for example to bunch number 0004 bunches 803 in power failure has taken place in the data recording of carrying out.At this moment, during file when energising begins once more recovers to handle, confirm existing bunch when whether identical according to the beginning of data file video 1 bunch 0002 order with follow-up bunch file ID, when bunch number 0004 is existing bunch, existing bunch with follow-up bunch file ID with regard to (step S904) inequality.Therefore, final bunch FFFF of expression data file is stored into the position (step S905) of bunch number 0004 of file allocation table 802.Like this, just, identical log file in the time of data file VIdeo1 can being reverted to end of record (EOR) normally shown in Figure 9.

Like this, digital data record renovation process and digital data record regenerating unit according to present embodiment 4, the annexation of the file ID by will being used for the recognition data file and expression bunch be connected bunch number storage to each bunch, even abnormal ending has taken place in digital data record, the file allocation table 602 of recorded data file till energising also can be repaired from the start-of-record to the abnormal ending when beginning once more, thus can will be able to recover to handle as document form by regenerating section.

In present embodiment 4, as file ID, the Hour Minute Second on days when having used start-of-record still, also can use the counter that does not have repeatability.

In addition, in present embodiment 4, the value as the file allocation table 802 of the state of the annexation that does not have file allocation table is to use " 0000 ", still, also can use other the value that does not exist as bunch number.

In addition, in embodiment 1～4, can posting field all bunches be illustrated, still, also can posting field distribute to a part bunch, and remaining bunch used as the computer data posting field.

In addition, in embodiment 1～4, as expression do not exist after this bunch bunch but final bunch identifier has used FFFF, still, also can use other the value that does not exist as bunch number.

Embodiment 5.

Below, with reference to the digital data record regenerating unit of the description of drawings embodiment of the invention 5.

The digital data record regenerating unit of present embodiment 5 uses any described digital data record renovation process of embodiment 2～4, when the record charging broadcast, waits abnormal ending even power failure has taken place, and also can carry out suitable disposal.

Figure 13 (a) is the figure of structure of the digital data record regenerating unit of expression present embodiment 5.

In Figure 13 (a), the digital data record regenerating unit has digital broadcasting acceptance division 1001, code translator 1002, digital data record regeneration control part 1003, disk storage portion 1005 and data output destination switch 1006.Digital data record regeneration control part 1003 has data input and output portion 21, file structure management department 25 and controller 27.File structure management department 25 and then have file and recover handling part 26.Any of the structure that data input and output portion 21, file structure management department 25 and file recover handling part 26 and action and embodiment 2～4 is described identical, omits its explanation.

Digital broadcasting acceptance division 1001 receiving digital broadcast 10A take out copy protection information, simultaneously, carry out Signal Separation, take out the program of user's appointment, if desired, coil search according to copy protection information, take out numerical data 10B.The numerical data 10B of the program that is taken out by digital broadcasting acceptance division 1001 is to 1003 outputs of digital data record regeneration control part.

Simulated data is deciphered and be transformed to code translator 1002 from digital data record regeneration control part 1003 receiving digital data 10B, carries out video/audio output.

The controller 27 of digital data record regeneration control part 1003 records charge information 10D in the main card 1004, the specifying in of the destination of data output simultaneously switch 1006 only regenerated or regenerated and write down when all carrying out is to file structure management department 25 output commands, in order to numerical data 10B is exported to code translator 1002, the specifying in of data output destination switch 1006 only write down or regenerated and write down when all carrying out is to file structure management department 25 output commands, in order to any the described digital data record renovation process that utilizes embodiment 2～4 numerical data 10B is recorded in the disk storage portion 1005.

In addition, file recover handling part 26 after the energising beginning, detect data recording since have a power failure wait and abnormal ending the time, controller 27 is just to file structure management department 25 output commands, in order to the file in the record way in the elimination disk storage portion 1005, thereby from charging broadcast charge information 10D, delete this program.

Charge information 10D records in the main card 1004.

In disk storage portion 1005, numerical data 10B carries out record by any one document form of embodiment 2～4.

Data output destination switch 1006 only is appointed as the specification signal 10C that regenerates, only write down or regenerate and will represent this type of service when writing down any one type of service that all carries out and is exported to the digital data record control part 1003 of regenerating on the output ground that the user will receive data.

Figure 13 (b) is the figure that is used for illustrating the charge information form of main card 1004.

In Figure 13 (b), the charge information form by the charging broadcast price 1007 of storage audiovisual price, when the audiovisual identification be regeneration or video recording audiovisual form 1008 and the program file 1009 of the filename of stored record in disk storage portion 1005 time constitute.

Below, the action of digital data record regenerating unit is described.

At first, receiving digital broadcast 10A, this broadcasting or write down the situation of this broadcasting of regenerating are described.

Before receiving broadcasting, the user of digital data record regenerating unit selects the output form of data promptly to regenerate in advance and write down any one form in carrying out, only regenerate, only writing down, and setting data is exported destination switch 1006.

The digital broadcasting that sends from the broadcasting station, at first input digit broadcast reception portion 1001.And; digital broadcasting acceptance division 1001 takes out the copy protection information that is included in the digital broadcasting; carry out Signal Separation simultaneously; take out the program of user's appointment; if desired; coil search according to copy protection information, take out numerical data 10B, and to 1003 outputs of digital data record regeneration control part.

Digital data record regeneration control part 1003 records charge information 10D in the main card 1004.And the appointment of data output destination switch 1006 is that numerical data 10B is exported to code translator 1002 when comprising regeneration, and the appointment of data output destination switch 1006 is that numerical data 10B is stored in the disk storage portion 1005 when comprising record.

When code translator 1002 was exported, simulated data is deciphered and be transformed to code translator 1002 with numerical data 10B at numerical data 10B, carries out video/audio output.

The record of numerical data 10B in disk storage portion 1005 utilizes any described digital data record renovation process of embodiment 2～4 to carry out.

Below, the action of the data of regenerative recording in disk storage portion 1005 is described.

When regenerating from disk storage portion 1005, digital data record regeneration control part 1003 reading number data 10B from disk storage portion 1005 is by transmitting just renewable simulated data to code translator 1002.

Secondly, use Figure 14 that the processing of digital data record regeneration control part 1003 when abnormal endings such as power failure have taken place in record the charging broadcast program is described.

Figure 14 is the regenerate process flow diagram of processing of control part 1003 of the digital data record of expression charging broadcast program when abnormal endings such as powers failure have taken place in record.

At first, at step S111, file recovers handling part 26 and utilizes any one digital data record renovation process judgment data of embodiment 2～4 to write down whether abnormal ending, if recording processing is not interrupted, just finishes energising and begins once more to handle.If recording processing has been interrupted, just enter step S112.

At step S112, file structure management department 25 obtains the Data Filename that records in the way in disk storage portion 1005, as interrupting file.

At step S113, whether controller 27 is judged has in the program file 1009 of charging broadcast charge information and the consistent file of interruption file.If there is no Yi Zhi program file 1009 is just judged it is in the not bright broadcast recoding, and is entered step S115.

At step S114, file recovers handling part 26 and utilizes any one digital data record renovation process of embodiment 2～4 to write down the recovery processing of interruption file.And, finish energising and begin once more to handle.

At step S115, controller 27 is checked the audiovisual form 1008 of storage in main card 1004.And, when audiovisual form 1008 only is video recording, just enter step S116, to file structure management department 26 output commands, in order to eliminate the interruption file of disk storage portion 1005.So file structure management department 25 is just with the interruption file cancellation of disk storage portion.And, enter step S119, from charging broadcast price 1007, deduct the price of video recording.And, finish energising and begin once more to handle.

Like this, digital data record regenerating unit according to present embodiment 5, by utilizing any described file structure recording digital broadcast of embodiment 2～4, when even abnormal endings such as power failure have taken place when data recording, if digital broadcasting is not a charging broadcast, just can recover the file that interrupts owing to abnormal ending.In addition, if the digital broadcasting of writing down interruption owing to abnormal ending is a charging broadcast,, just can this charging broadcast not be chargeed, thereby can carry out suitable charging the user by discarded data till recording in the way.

In present embodiment 5, the situation of unconditionally discarding record data in record when abnormal ending has taken place the charging broadcast program has been described, still, the reservation record that judges whether that also can introduce according to the user charges to the data in the way.

Embodiment 6.

Below, with reference to the digital data record regenerating unit of the description of drawings embodiment of the invention 6.

The digital data record regenerating unit of present embodiment 6 has a plurality of disk storage portion, by storing bunch recording in the different disk storage portions of numerical data with the file allocation table of link information of expression bunch, can reduce the heavy burdens than the situation of using single disk storage portion, visit thereby can carry out dish at a high speed.

Figure 15 is the figure of structure of the digital data record regenerating unit of expression present embodiment 6.

The digital data record regenerating unit has data input and output portion 1201, file structure management department 1202, the A1203 of disk storage portion and the B1204 of disk storage portion.

The numerical data input machine receiving digital data that data input and output portion 1201 is carrying out connecting from the outside when numerical data receives, and to file structure management department 1202 output datas, when carrying out numerical data regeneration, receive data from file structure management department 1202, and the numerical data regeneration machine output digital data that connects to the outside.

File structure management department 1202 carry out numerical data when input with digital data record in A1203 of disk storage portion and the B1204 of disk storage portion, when carrying out numerical data output from A1203 of disk storage portion and the B1204 of disk storage portion the reading number data.

In A1203 of disk storage portion and the B1204 of disk storage portion, the storage numerical data.The file structure of using in the A1203 of disk storage portion and the B1204 of disk storage portion is identical with the file structure of embodiment 4, by shown in Figure 9.

Below, the operation of recording of numerical data in A1203 of disk storage portion and the B1204 of disk storage portion is described.

When carrying out data recording, a filename and a beginning bunch number are signed in in the root directory 601, upgrade bunches 603 link information by file allocation table 602, with digital data record in each zone of bunches 603.

Root directory 601 that will be corresponding with bunch B of the B1204 of disk storage portion of Figure 15 and file allocation table 602 store in the storage area of the root directory 601 of the A1203 of disk storage portion different with bunches 603 the disk storage portion of memory disc storage part B1204 and file allocation table 602, and root directory 601 that will be corresponding with bunch A of the A1203 of disk storage portion and file allocation table 602 store in the storage area of the root directory 601 of the B1204 of disk storage portion different with bunches 603 the disk storage portion of memory disc storage part A1203 and file allocation table 602.

Like this, digital data record renovation process according to present embodiment 6, by storing bunch recording in the different disk storage portions of numerical data with the file allocation table of link information of this bunch of expression, just can carry out dish visit at a high speed, even and when abnormal ending such as power failure has taken place in digital data record, also recorded data till from the start-of-record to the abnormal ending can be read in as normal document form.

In present embodiment 6, illustrated root directory also with the example that bunch stores in the different disk storage portions, still, though root directory with bunch store in the identical disk storage portion, bunch also can store in the different disk storage portions with file allocation table.

In addition, the situation of using 2 disk storage portions has been described, still,, also can have used the disk storage portion more than 3 if will bunch store in the different disk storage portions with file allocation table.

In addition, the file structure of A1203 of disk storage portion and the B1204 of disk storage portion also can be the form that has earlier shown in Figure 17.

In embodiment 1～6, data input and

output portion

21,1201 carries out two kinds of actions of the input and output of data, still, also can be divided into data input part and data output section two parts.

In addition, the file

structure management department

22,25 of the digital data record regenerating unit of present embodiment 1～6, file recover handling part 26 and controller 27 can constitute with hardware, also can constitute with software.

In addition, the numerical data of embodiment 1～6 is view data and voice data or the data that comprise any one party.

In addition, in embodiment 1～4 and embodiment 6,, can utilize the digital data record renovation process that simulated data is carried out record as numerical data by simulated data is encoded to numerical data in advance.

As mentioned above, digital data record renovation process of the present invention and digital data record regenerating unit are to carry out the record of view data, voice data or these two kinds of data or regeneration, are applicable to the record of the data when in the data recording way abnormal endings such as power failure having taken place.

Claims

One kind with the record least unit of data on the disc record media bunch be the digital data record renovation process of the regeneration numerical data of unit record, it is characterized in that: be included in the 1st step of constructing bunch interconnective file structure that can write down on the above-mentioned disc record media; From can write down bunch the 2nd step of beginning opening entry numerical data and the 3rd step that numerical data that will be from record beginning bunch to end of record (EOR) bunch constitutes log file.
2. by the described digital data record renovation process of claim 1, it is characterized in that: in the data recording of above-mentioned the 2nd step way during data recording generation abnormal ending, and then be included in above-mentioned abnormal ending recover the back detect data recording abnormal ending step and will constitute the step of log file from data recording begins to be write down till abnormal ending numerical data according to the format information of numerical data.
3. by the described digital data record renovation process of claim 2, it is characterized in that: the format information of above-mentioned numerical data is the sync byte of transmission package.
4. by the described digital data record renovation process of claim 2, it is characterized in that: the format information of above-mentioned numerical data is a temporal information.
One kind with the record least unit of data on the disc record media bunch be the digital data record renovation process of the regeneration numerical data of unit record, it is characterized in that: comprise file identifier and bunch link information are appended to step in recording on the numerical data bunch; Recover the back in above-mentioned abnormal ending when abnormal ending has taken place data recording in data recording way and detect the data recording step of abnormal ending and the step of the link information of repairing bunch according to the above-mentioned file identifier in recording bunch and above-mentioned bunch of link information.
6. a digital data record regenerating unit is characterised in that: having bunch is the disc record media of unit storage numerical data with the record least unit of data, with numerical data is stored on the above-mentioned disc record media or from the above-mentioned disc record media the file structure management department of reading number data, above-mentioned disc record media has all bunch interconnective in advance file structures.
7. by the described digital data record regenerating unit of claim 6, it is characterized in that: above-mentioned file structure management department has, and the file that the numerical data that will begin to be write down from data recording till abnormal ending in the record way of numerical data during data recording generation abnormal ending, after above-mentioned abnormal ending recovers, according to the format information of numerical data constitutes record data recovers handling part.
8. by the described digital data record regenerating unit of claim 7, it is characterized in that: above-mentioned format information is the sync byte of transmission package.
9. by the described digital data record renovation process of claim 7, it is characterized in that: above-mentioned format information is a temporal information.
10. a digital data record regenerating unit is characterised in that: having bunch is the disc record media of unit storage numerical data with the record least unit of data, with with store into after numerical data affix file identifier and bunch link information above-mentioned disc record media bunch in or from above-mentioned disc record media the file structure management department of reading number data, above-mentioned file structure management department has, in the record way of numerical data during data recording generation abnormal ending, after above-mentioned abnormal ending recovers, according to above-mentioned file identifier and the above-mentioned bunch of link information in being recorded in bunch, the file that will constitute record data from data recording begins to be write down till abnormal ending numerical data recovers handling part.
11. the described digital data record regenerating unit of arbitrary claim by claim 7～10, it is characterized in that: and then have the digital broadcasting acceptance division of receiving digital broadcast, control the controller of above-mentioned file structure management department with the charge information that according to the digital broadcasting that received of expression whether is charging broadcast, when in receiving the charge digital broadcasting, the abnormal ending of data recording having taken place, after abnormal ending recovers, discard data recording and do not charge thereby above-mentioned controller just is controlled to be.
12. a digital data record regenerating unit that carries out the record regenerating of numerical data is characterized in that: a plurality of disk storage portion with record numerical data with the managed storage numerical data bunch recorded file structure management department in the different disk storage portions with the file allocation table of the link information of this bunch.