WO1999031590A1 - Procede de memorisation de fichiers, appareil de memorisation de donnees, procede de gestion de supports d'information, procede de gestion de fichiers, procede d'ecriture des donnees recues dans les supports d'information, et supports de memorisation de programmes - Google Patents
Procede de memorisation de fichiers, appareil de memorisation de donnees, procede de gestion de supports d'information, procede de gestion de fichiers, procede d'ecriture des donnees recues dans les supports d'information, et supports de memorisation de programmes Download PDFInfo
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- WO1999031590A1 WO1999031590A1 PCT/JP1998/005696 JP9805696W WO9931590A1 WO 1999031590 A1 WO1999031590 A1 WO 1999031590A1 JP 9805696 W JP9805696 W JP 9805696W WO 9931590 A1 WO9931590 A1 WO 9931590A1
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- Prior art keywords
- file
- recording
- recording medium
- data
- information
- Prior art date
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Definitions
- File recording method data recording device, recording medium management method, file handling method, method for writing received data to recording medium, and program recording medium
- the present invention relates to a data recording device for recording digital data as a file, a method for recording a file, and a management method for managing a recording medium. Further, the present invention relates to a file handling method in a file system for managing and accessing a file recorded on a recording medium.
- the present invention relates to a computer, for example, a method of extracting data from a packet received through a transmission path, writing the data on a recording medium in which a position for recording data can be freely selected, and a program recording medium.
- a conventional data recording device such as a VCR is realized by a configuration described below by adding auxiliary information to a video / audio signal.
- FIG. 25 is a block diagram of a conventional video recording device, where 11 is a video signal converter, 12 is an audio signal converter, 13 is an auxiliary information processor, 14 is a conversion data input device, and 15 Is a recording signal processor, 16 is a controller, 17 is a first selector, 18 is a second selector, 19 is a head, and 20 is a recording medium.
- DV Digital Video Cassette
- HD DIGITAL VCR CONFERENCE High DIGITAL VCR CONFERENCE
- predetermined conversion is performed on the video signal input by the video signal converter 11, and at the same time, predetermined conversion is performed on the audio signal input by the audio signal converter 12.
- the auxiliary information processor 13 In accordance with the instruction input to the controller 16, the auxiliary information processor 13 generates predetermined auxiliary information, connects the second selector 18 to the A side, and switches with the first selector 17.
- the converted video signal / audio signal input by the recording signal processor 15 and the generated auxiliary information are formatted into a recording signal while being recorded on the recording medium 20 by the head 19.
- Auxiliary information includes the format of the signal to be recorded (current system / high-definition system, frame frequency, audio sampling frequency, sampling bit width, etc.), processing method, time code, information on edit / copy status, and program recording start There are various kinds of information such as information indicating the position and end position, the contents of the recorded program, the Z configuration title, and the search key used for cueing. Any information other than necessary information may be selected and recorded.
- the converted data input unit 14 is provided with a video signal of the same format as that obtained by performing the predetermined conversion performed by the video signal converter 11, and the one obtained by performing the predetermined conversion performed by the audio signal converter 12.
- Input the audio signal and auxiliary information of the same format connect the second selector 18 to the B side, and record the converted video signal 'audio signal and auxiliary information input by the recording signal processor 15.
- the signal is formatted into a signal and recorded on the recording medium 20 by the head 19.
- the conversion data input device 14 can transmit and receive not only various signals but also instructions given to the data recording device.
- the video signal is simply a stream of digital data, and if general data is input in a predetermined format from the conversion data input unit 14, the video signal is recorded. In addition, it is possible to record general data.
- the signal to be recorded is assumed to be a video signal that does not affect the image quality even if it is corrected. Not enough.
- the only way to search the contents recorded on a video tape in a short time was to search the video tape at high speed. That is, it was not possible to identify the content recorded on the entire recording medium only by reproducing a part of the recording medium.
- PCs personal computers
- the recording capacity of a data recording device such as the VCR described above, for example, DV
- VCR digital versatile record
- DV digital versatile record
- the use of a standard cassette that can increase the tape length by 4.5 times, thinner tape thickness, and high-density recording with a narrow track pitch have also been standardized, making it possible to record very large amounts of data. It is useful if can be handled as a file from a PC.
- the DV is equipped with an IEEE 1394 IZF, and if it is connected to a PC equipped with an IEEE 1394 I / F, data can be transferred between the PC and the DV.
- the transmitted video and audio data is transmitted in packet format.
- the PC has an HDD as a standard recording medium, receives data transmitted from the DV via IEEE 1394, and writes the received data to the HDD This makes it possible to capture data captured by DV onto a PC.
- Isochronnous transmission is a form in which stream data is continuously sent without Hand-shacke, and there is no guarantee that the beginning of the received data is synchronized with Fram, which is a recording unit of DV. That is, the bucket that is received when the reception is started is not always the first bucket of Frame. Also, if a bucket to be transmitted at the time of transmission is lost or an error occurs in the bucket data, the received data may be lost because the packet is not retransmitted. In addition, it is necessary to transmit one bucket every T ime s 1 ot at a fixed interval (8000 times slot / second), and a bucket carrying data and an empty bucket (Nullpacket) having no data are required. They are mixed and transmitted. In order to perform such Capturing on a PC, it is usually necessary to receive the received data once in the receive buffer, write it to the HDD while shaping it into Frame units.
- the DV data is 25 Mb ps (in the case of the NTSC / PAL system) even for the video signal itself.
- the audio data, auxiliary data, and various headers are added to the 28.8 Mb ps data stream. Therefore, in the process of writing data to the HDD using the above method on a PC, it is highly probable that frames will be missing, and this process will be performed stably while maintaining data reliability. There was a problem that it was difficult to continue. Disclosure of the invention
- the present invention provides a file recording method and a file recording method for efficiently recording a file.
- An object of the present invention is to provide a data recording device.
- Another object of the present invention is to provide a cassette management method and a data recording device for identifying and managing a recording medium.
- the present invention provides, for example, a file system for managing data recorded on a recording medium such as a tape as a file by efficiently dividing, trimming, combining, deleting, and different files. It is an object of the present invention to provide a method of handling a file which can be copied or moved between recording media managed by the system.
- the first invention (corresponding to the invention described in claim 1) divides a file into a plurality of divided files
- a file recording method for recording information about the file and information about the divided file on the recording medium for recording information about the file and information about the divided file on the recording medium.
- a sixth aspect of the present invention when the data amount of a file exceeds a predetermined standard, the file is divided into a plurality of divided files, and the file and the divided file are divided.
- Format conversion means for generating information and converting the data of the divided file and both of the information into a signal in a recording format; and converting the signal in the recording format obtained by the format conversion means into a signal in the recording format.
- Recording means for performing predetermined recording signal processing and recording;
- a reproducing unit that reproduces the recording medium and performs predetermined reproduction signal processing and error detection; and, based on the signal in the recording format obtained from the recording medium by the reproducing unit, the data of the respective divided files and Data obtained by obtaining both information, determining whether or not the data of each of the divided files is correctly recorded, and notifying the format conversion means of the result of the determination to the format conversion means. It is a recording device.
- a tenth aspect of the present invention includes: recording apparatus identification information capable of identifying a recording apparatus used for initializing a recording medium; and date and time when the initialization was started. Generating recording medium identification information for identifying the recording medium based on the information and
- the eleventh invention (corresponding to the invention according to claim 11) is a recording medium management method for recording recording medium identification information for identifying a recording medium at a plurality of locations on the recording medium. .
- a fifteenth aspect of the present invention is a method of re-initializing a recording medium that has been initialized once, the recording medium generated before the re-initialization.
- This is a recording medium management method for inheriting the recording medium identification information for identifying.
- recording apparatus identification information for identifying a recording apparatus used for initializing a recording medium, and the initialization is started.
- Recording medium identification information generating means for generating recording medium identification information included in recording medium management information that is information on the recording medium based on date and time information;
- Format conversion means for converting the information related to the recording medium and the recording medium management information into a recording format signal incorporating the recording medium identification information for each minimum recording unit;
- Recording means for performing predetermined recording signal processing on the signal in the recording format obtained by the format conversion means and recording the signal;
- Reproduction means for reproducing the file data and the information related to the file data, and the recording medium on which the recording medium management information is recorded, and performing predetermined reproduction signal processing and error detection;
- An inverse format converting unit for performing an inverse format conversion of the file and related information and the recording medium management information to an original format from the recording format signal obtained from the recording medium by the reproducing unit;
- Recording medium identification information extracting means for extracting the recording medium identification information incorporated for each of the minimum recording units from the signal in the recording format obtained from the recording medium by the reproducing means;
- a data recording apparatus comprising: the recording medium management information holding means for determining whether or not a match occurs.
- a nineteenth aspect of the present invention includes: medium reliability information indicating the reliability of a recording medium; and items constituting recording medium management information that is information on the recording medium.
- a recording medium management method for recording on the recording medium includes:
- a twenty-third aspect of the present invention (corresponding to the invention of claim 23) is to store file data and related information and recording medium management information on a recording medium for each recording minimum unit.
- Format conversion means for converting into a signal in a recording format incorporating recording medium identification information for identifying the recording medium,
- Recording means for performing predetermined recording signal processing on the signal in the recording format format obtained by the format conversion means and recording the signal;
- Reproducing means for reproducing the recording medium on which the file data and the information related thereto, and the recording medium management information are recorded, and performing predetermined reproduction signal processing and error detection;
- An inverse format conversion means for inverting the file data and information related thereto and the recording medium management information from the signal in the recording format obtained from the recording medium by the reproducing means to the original format;
- the storage medium management information on the storage medium obtained by the inverse formatting means is held, and when the storage medium is accessed, the medium reliability information, which is an item constituting the storage medium management information, is updated to the latest state.
- This is a data recording device including a recording medium management information holding unit to be updated.
- the large-capacity file can be handled as a file having an appropriate capacity on a recording medium, so that the file is correctly recorded immediately after recording.
- the time for confirmation is minimized, and the data to be re-recorded at the time of confirmation can be made a part of the file instead of the entire file, so that the data can be recorded efficiently.
- on a tape if one recorded block is erroneous during playback, the other recording block is less likely to be erroneous. , Will be greatly improved.
- a recording medium identification that does not match between recording media
- the recording medium identification information of the recording medium is known, the recording medium can be reliably identified and recorded on the wrong recording medium. It is possible to prevent the occurrence of a catastrophic failure that would cause a problem.
- the recording medium identification information is recorded on the entire recording medium, it is possible to obtain the recording medium identification information only by reproducing a part of the recording medium. Also, for example, by managing the medium reliability information, the danger that the recorded data cannot be reproduced can be reduced, and the error correction capability can be greatly improved.
- a twenty-fourth aspect of the present invention (corresponding to the twenty-fourth aspect of the present invention) relates to an area in which an original file is recorded, which can be specified by a recording start position and a recording end position on a recording medium. Splitting the first child region into N child regions of the Nth child region,
- the position on the i-th sub-region side between the i-th sub-region (l ⁇ i ⁇ N) obtained by the division and the boundary between the i-th sub-region and the i-th sub-region Determines the recording end position of the child area of i-11,
- a position on the i-th child area side is determined as a recording start position of the i-th child area
- a twenty-sixth aspect of the present invention (corresponding to the invention according to claim 26) is that the recording start position in the area of the original file which can be specified by the recording start position and the recording end position on the recording medium A position immediately after the end of the recording portion of the first data recorded from is determined as a new recording start position of the original file,
- a position immediately before the start of the recording portion of the second data recorded up to the recording end position is determined as a new recording end position of the original file.
- the twenty-eighth invention (corresponding to the invention of claim 28) is characterized in that a file identifiable by the recording start position and the recording end position on the recording medium is the Nth to Nth files. If N files (N ⁇ 2) are recorded consecutively in ascending order,
- a thirtieth invention (corresponding to the invention described in claim 30) manages and accesses data recorded in a continuous area on a recording medium as a file, and furthermore, When a new file is recorded on the recording medium, the file immediately after the recording end position of the recorded file is held as a data end position. When deleting the latest file recorded from the last end on the recording medium, the latest file is deleted, and at the same time, the data end position is returned to the recording start position of the latest file. This is the file handling method for deleting files.
- the 33rd invention (corresponding to the invention described in claim 33) is a first recording medium that performs file management using a first file system that can handle a file size of M bytes.
- the file size is K-pites (M ⁇ K> L) using the second recording medium that performs file management using the second file system that is a file size byte (M> L)
- Source file on the first recording medium A method of handling a file when copying to the second recording medium, wherein the source file is divided into N child files, each of which has a file size of not more than L bytes, on the first recording medium.
- a thirty-sixth aspect of the present invention is a first recording medium which performs file management using a first file system whose file size can be handled is M bytes.
- the file size is K bytes (M ⁇ K> L) using a second recording medium that performs file management using a second file system having a file size of K bytes (M> L).
- the file when copying a large-capacity file to an HDD, the file is copied while automatically dividing the file, or automatically.
- By dividing a file dynamically and then copying it becomes possible to copy between two recording media with different maximum file sizes that can be handled.
- a thirty-eighth invention (corresponding to the invention according to claim 38) comprises a first interface for receiving a packet composed of a data part and an additional information part through a transmission line, and a data recording position. Recording medium, a second interface for writing data to the recording medium, a memory for temporarily storing data, and controlling operations of the first interface and the second interface.
- a method of writing received data to a recording medium in a computer comprising: a processor; and a path connecting the first interface, the second interface, the memory, and the processor.
- the first interface sequentially writes the received packet to the memory via the bus
- the processor indicates to the second interface a recording position on the recording medium where the data section is to be recorded, according to the content of the data section of the bucket written in the memory,
- the second interface reads out the data portion from the bucket written in the memory through the path, and receives received data to be written to the recording position of the recording medium, which is designated by the processor. This is the method of writing to the recording medium.
- the necessary data among the data written in the reception buffer can be directly written to the hard disk without being transferred to another buffer and reformed.
- FIG. 1 is a block diagram of a data recording device according to the first embodiment.
- FIG. 2 is a configuration diagram of an example of file information generated and recorded in the first embodiment.
- FIG. 3 is a block diagram of the data recording device according to the second embodiment.
- FIG. 4 is a block diagram of a data recording device according to the third embodiment.
- FIG. 5 is a block diagram of a data recording device according to a fourth embodiment.
- FIGS. 6 (a) and 6 (b) are configuration diagrams of an example of recording medium identification information managed / generated and recorded in the fourth embodiment.
- FIG. 7 is a block diagram of a data recording device according to a fifth embodiment.
- FIG. 8 is a block diagram of a data recording device according to a sixth embodiment.
- FIG. 9 (a) is a diagram for explaining an example of file division in the seventh embodiment, and is a diagram before a file division process.
- FIG. 9 (b) is a diagram for describing an example of file division in the seventh embodiment, and is a diagram after a file division process.
- FIG. 10 is a flowchart of a file dividing method according to the seventh embodiment.
- FIG. 11 (a) is a diagram for describing an example of file trimming in the eighth embodiment, and is a diagram before a trimming process.
- FIG. 11 (b) is a diagram for describing an example of file trimming according to the eighth embodiment, and is a diagram after a trimming process.
- FIG. 12 is a flowchart of a file trimming method according to the eighth embodiment. It is.
- FIG. 13 (a) is a diagram for explaining an example of file connection in the ninth embodiment, and is a diagram before connection.
- FIG. 13 (b) is a diagram for describing an example of file connection in the ninth embodiment, and is a diagram after connection.
- FIG. 14 is a flowchart of a file combining method according to the ninth embodiment.
- FIG. 15 (a) is a diagram showing an example of file deletion according to the tenth embodiment, which is a diagram before deletion.
- FIG. 15 (b) is a diagram showing an example of file deletion according to the tenth embodiment, and is a diagram after deletion.
- FIG. 15 (c) is a diagram showing a state where a third file is recorded after deleting a file in the tenth embodiment.
- FIG. 16 is a flowchart of a file deletion method according to the tenth embodiment.
- FIG. 17 is a diagram showing an example of copying files between devices according to the eleventh embodiment.
- FIG. 18 is a flowchart of a method for copying files between devices according to the eleventh embodiment.
- FIG. 19 (a) is a diagram for describing an example of file copying between devices according to the twelfth embodiment, showing a state before file division processing.
- FIG. 19 (b) is a diagram for explaining an example of file copying between devices according to the twelfth embodiment, and shows a state of finale division processing and a state of copy processing of the divided files.
- FIG. FIG. 20 is a flowchart of a method of copying a file between devices according to the twelfth embodiment.
- FIG. 21 is a block diagram of a computer according to the thirteenth embodiment.
- FIG. 22 is an explanatory diagram illustrating an example of a data write operation to the HDD according to the thirteenth embodiment.
- FIG. 23 (a) to FIG. 23 (c) are explanatory diagrams of the data configuration output from the DV.
- FIGS. 24 (a) to 24 (c) are explanatory diagrams of an implementation by a program according to the fourteenth embodiment.
- FIG. 25 is a block diagram of a conventional data recording device.
- FIG. 1 is a block diagram showing a data control device 21 and data recording / reproducing devices 26a and 26b according to the first embodiment of the present invention, wherein 22 is a file management unit, and 23 is a command / status process.
- 24 is a file data processor
- 25 is an input / output unit of a data control device
- 27 is an input / output unit of a data recording / reproducing device
- 28 is a controller
- 29 is a data processor
- 30 is a recording medium.
- the data recording / reproducing device 26b has the same transmission function as the data recording / reproducing device 26a.
- the data control device 21 transmits data recording, reproduction, status inquiry and other commands to the data recording / reproducing device 26a or 26b, receives the transmitted status, and records the data. Data to be transmitted and received reproduced data.
- the file management unit 22 manages files recorded on the recording medium 30 using the recording medium management information.
- the recording medium management information is a group of information generated and managed with respect to the recording medium 30.
- the medium information (see FIG. It consists of file information (see Fig. 2) generated for each recorded file.
- the command / status processor 23 generates a command to be transmitted to the data recording / reproducing device 26a or 26b in accordance with a file read / write instruction or the like from the file management unit 22. Processes the received status.
- the file data processor 24 handles actual file data.
- File information is created for each file, and the file data and file information are rearranged into a predetermined format. If the file has a capacity exceeding the predetermined capacity, the file is divided into a plurality of pieces, and file information for the original large-capacity file and file information for each of the divided files are generated.
- the data to be processed by the file data processor 24 is, for example, stream data that has been shot for a conventional VTR is processed in advance by a predetermined file system so that it can be handled as a file. (See application filed with International Application No. PC TZ JP 98/0316).
- the input / output unit 25 includes a command / status and data format in the data control device 21 for transmitting / receiving command / status and data. It converts the command Z status and data format on the transmission path connected to the data recording / reproducing device 26a or 26b.
- the data recording / reproducing device 26a receives the transmitted data according to the command transmitted from the data control device 21 and performs recording, transmission of reproduced data, notification of status, and the like.
- the input / output unit 27 performs transmission / reception, interprets the transmitted command, and instructs data recording, Z reproduction, and the like according to the command.
- a status is requested, a predetermined process is performed to obtain the information.
- the controller 28 controls the operation of a mechanism for recording on the recording medium 30 or reproducing from the recording medium in accordance with an instruction from the input / output unit 27.
- the data processor 29 When instructed to perform a recording operation, the data processor 29 performs predetermined processing such as error correction coding and Z-modulation on the data input from the input / output unit 27 so that the data can be recorded on the recording medium 30. Convert and record on recording medium 30.
- the file management unit 22 instructs the playback operation through the command / status processor 23 to check whether the recorded power is correct or not, and performs data processing on the signal reproduced from the recording medium 30.
- the demodulator 29 performs predetermined demodulation, block detection, and error correction decoding. The signals transmitted through the I / O units 27 and 25 are input to the file data processor 24, and the Check whether the data was correctly recorded by the data processor 24.
- the file recorded on the recording medium 30 is deleted.
- the file information (an example of file information generated for each file is shown in FIG. 2) and the recording medium management information composed of the medium information which is information on the recording medium 30 are updated.
- the recording medium management information can be recorded after recording the file.
- the contents of the file information shown in FIG. 2 include the following.
- the leftmost number is the byte address of the area to which each information is assigned. If m, it is information of 1 b y t e, and is allocated to the (m + 1) th byte. If it is n to n + (x-1), it is information of X bytes and is allocated to the (n + 1) th to (n + x) th bytes.
- 011 This is for describing the structure of Directory-directory (or folder), and has no entity to be recorded as data.
- a file is not only its data, but also the file name / directory name, file size, date / time information (file creation date / time, file update date / time, last access date / time, etc.), and file tribute (Read only, Hidden, System file). , Directory, etc.) are managed by the file system.
- date / time information file creation date / time, file update date / time, last access date / time, etc.
- file tribute Read only, Hidden, System file.
- Directory etc.
- Entry ID 001
- total number of divided files set to k when divided into k
- File information in the file system (FSInfo): The information about the file used for management by the file system described above is used as is as FSInfo.
- the file name of this divided file is obtained by adding information indicating the order of division to the file name of the original file for generating the divided file.
- the file size can be the size of each divided file.
- the file data processor 24 of the data controller 21 receives the information of the file system for the file instructed to be recorded from the file management unit 22, creates the file information of this file, and To the data recording / reproducing device 26a for recording.
- the file is divided so that the large-capacity file can be treated as a file with an appropriate capacity on the recording medium, and
- the present invention checks the small divided file, so the total time required Can be shortened.
- file division processing aims at recording data efficiently, and whether the recorded data is divided or not, or If so, the user does not need to know how it is divided. In this point, this is different from file division processing as video data editing work based on a user's explicit instruction, which will be described later (for example, the seventh embodiment).
- FIG. 3 shows a block configuration diagram of the present embodiment. This is a double write processor 31 added to the first embodiment, and the double write processor 31 can send data to be recorded twice from the input / output unit 25 according to a predetermined arrangement. The data is rearranged first.
- DIF sequence a transmission sequence
- DIF block transmission blocks
- DIF sequence 10 transmission sequences
- Information for one frame is transmitted.
- Table 1 is the first DIF sequence in the frame. Header is the information of the data to be transmitted, SBC is the subcode information, VAUX is the video auxiliary information, Ax is the audio information, and the other set of X and y means the video information placed on the recording block y of track X.
- the remaining nine DIF sequences are contents in which track numbers are sequentially cyclically shifted.
- DIF block is a block in which a 3-byte transmission header (DIF header) is added to 77-byte data, and 10 DIF sequences composed of 150 blocks as described above. Collectively, a 1-frame NTSC video / audio signal is composed.
- a sync block, address, and error correction code are added to the 77-bit data obtained from one transmitted DIF block to form one recording block.
- the synchronization pattern is a fixed pattern for separating recording blocks during playback.
- the address is an ID number for identifying a recording block. In this way, ten tracks can be generated from ten DIF sequences, and each track can be recorded on tape. When a tape is played, the reverse process is performed to generate and transmit 10!) IF sequences from the data of 10 tracks.
- two recording blocks to which the same data is assigned are recorded on the recording medium in units of a recording block including a synchronization pattern, an address, data, and an error correction code. Also, two recording blocks that record the same data The locks are arranged so that they can be recorded by different heads, and the two recording blocks that record the same data have the length of the data recording portion with respect to the width direction of the recording medium tape. Are placed at a distance of more than half of If the recording medium is tape, the four most important errors are:
- two transmission blocks to which the same data is allocated are recorded on different tapes with different heads, and are furthermore recorded in the width direction of the tape. It is assigned to a recording block that is vertically separated by more than half the length of the data recording part, and if one recording block is incorrect during playback, the other recording block will also be incorrect at the same time. There is almost no possibility that the error will be corrected. It is greatly improved.
- the present invention is applicable even when the data control device 21 controls a plurality of data recording / reproducing devices. It is also possible to instruct the data recording / reproducing device 26a to perform recording, and at the same time, instruct the data recording / reproducing device 26b to play, thereby copying and moving the file.
- the data recording / reproducing device 26a and the data recording / reproducing device 26b may be devices having the same specification or devices having different specifications having the same function.
- the file information in the above embodiment is an example.
- the same effect can be obtained regardless of the structure of the information about the recording position and the way of holding the file system information.
- the present invention can apply the first and second embodiments as they are. It is possible.
- FIG. 4 shows this embodiment. At this time, a configuration is also possible in which the data control device 21 and the data recording / reproducing device 26a are combined into one device, and the data recording / reproducing device 26b is connected.
- the recording medium can be identified so as not to cause a malfunction.
- FIG. 5 shows a block configuration diagram of the fourth embodiment. This differs from the first embodiment in that a recording medium-specific information generator 41 and a recording medium management information holder 42 are added, and the file data processor 24 is replaced by a file data processor 44. is there.
- the recording medium identification information generator 41 and the recording medium management information holder 42 are provided for each recording medium. It generates the recording medium identification information and holds the recording medium management information including the recording medium identification information.
- the file data processor 44 performs the actual processing of the file data (creation of file information, format conversion, etc.) in the same manner as the file data processor 24. It is not necessary to have the file division processing function of the container 24.
- the recording medium management information holder 42 manages and retains the recording medium management information to be recorded on the recording medium 30 currently being processed. That is, when initialization is performed, an initial value is set, the value is held, and when the recording medium 30 is newly replaced, the recording medium recorded on the recording medium 30 is managed. Reads information and retains its contents. Items that need to be updated are updated in synchronization with data recording and playback operations. For example, the remaining capacity of the recording medium needs to be updated each time a new recording is performed, and when a file is edited, the file information of the file is also added.
- the recording medium identification information generator 41 generates recording medium identification information that is a part of the information constituting the recording medium management information when the recording medium is initialized.
- the recording medium management information is retained in the recording medium management information holder 42, and the recording medium identification information recorded on the recording medium 30 is stored.
- the value of the information is compared with the value of the recording medium identification information held in the recording medium management information holder 42 to determine whether the recording medium 30 has been replaced. Will be able to confirm. That is, when accessing the recording medium 30, the data is reproduced from the recording medium 30, and the data processor 29 performs reproduction signal processing such as demodulation, recording block detection, and error correction decoding. Then, the recording medium identification information may be extracted and compared with the recording medium identification information registered in the recording medium management information held in the recording medium management information holder 42.
- the command status processor 23 performs a process of inquiring the data recording / reproducing device 26a through the input / output unit 25 and the input / output unit 27 for a unique identification number of the device itself. The value is notified to the recording medium identification information generator 41.
- the file management unit 22 notifies the recording medium identification information generator 41 of date and time information regarding the date and time when the initialization is to be performed.
- the recording medium identification information generator 41 generates the recording medium identification information from the unique identification number of the data recording / reproducing device 26a and the date and time information, notifies the recording medium management information holder 42 of the recording medium management information, The holder 42 sets the initial value of the recording medium management information of the recording medium to be initialized. If a combination of storage device / initialization date and time is specified, different storage media cannot be initialized simultaneously by the same storage device, so different storage media will not have exactly the same storage media identification information. .
- each device has an identification number called Node Unique ID, which is a unique value for each device, and this identification number can be used as it is.
- Node Unique ID As the date and time information, it is possible to use information representing 64 bits of year / month / day / hour / minute / second, such as the structure FileTime in the C language.
- Fig. 6 (a) shows an example of the medium information. The leftmost number is the byte address of the area to which each information is allocated, as in the case of FIG. The contents described in Fig. 6 (a) will be described below.
- the effective amount of the recording medium management information differs depending on the number of files to be managed.
- the recording medium management information can be composed of the medium information described here and the file information shown in Fig. 2.For example, if the information is arranged left-justified, from where to add the information next You need to know what to do. The information for that is management information free area information.
- the recording medium is a tape
- it indicates the size of the cassette, the material of the tape, the recording capacity, and the like.
- the recording medium can change the track pitch, such as VHS or DV, that information can also be recorded.
- the recording medium 30 is a tape
- the medium information recorded on the recording medium 30 cannot often be accessed immediately. Therefore, when recording the data of the file, at the same time, the auxiliary information (information generated and recorded for each data recording unit (Frame or Track) accompanying the data) includes the recording medium specific information. If the recording medium is recorded in any way, the recording medium identification information can always be obtained even if any part of the recording medium (tape) 30 is reproduced, and the replacement of the recording medium 30 can be detected in a short time. become.
- auxiliary information when the recording medium is DV, if the auxiliary information is recorded by arranging it in one or a plurality of transmission blocks (DIF blocks) or recording blocks, a recording block to which the same auxiliary information is assigned is recorded.
- DIF blocks transmission blocks
- FIG. 6 (b) An example of auxiliary information to be recorded on the entire tape (for example, a plurality of locations on the tape) is shown in FIG. 6 (b). The contents shown in FIG.
- the recording medium management information holder 42 resets the initial value to the recording medium management information
- the recording medium identification information uses the value generated at the time of the initial initialization as it is.
- the medium is not given two or more pieces of recording medium identification information, and the identification operation performed by the recording medium identification information is not confused. That is, this method is used, for example, when a cassette tape is used as a recording medium and a library is constructed in which a plurality of cassette tapes are identified and managed by their respective recording medium identification information. It solves the problems that arise.
- the value "efgh” different from the initially generated value "abed” is used as the identification information to be set when reinitializing. It does not create or set a new one. Therefore, two identification information is not given on one cassette tape, and a malfunction such as one cassette tape being regarded as two cassette tapes can be avoided.
- the recording medium 30 is, for example, a cassette tape and the initialization is performed more easily by rewriting only the recording medium management information.
- the recording medium identification information is incorporated and recorded in each track in the track portion where data is already recorded. If the above method is used, it is necessary to overwrite the data for Stuffing to erase all the recorded data and perform the initialization operation from the beginning, which often takes a very long time. . Therefore, by erasing only the portion where the previous recording medium management information is recorded and recording new recording medium management information, it is possible to reduce the time required for re-initialization. That is, by erasing the previous recording medium management information and recording new recording medium management information including information that no data is recorded, the file of the previously recorded data is recorded anywhere on the tape. Is no longer managed. Thereby, the initialization is substantially completed. Therefore, new data will be added in the future. 0 ⁇ When trying to record, data that has already been recorded will eventually be overwritten by the newly recorded data.
- the recording medium identification information that does not match between the recording media is generated, registered in the recording medium management information and recorded on the recording medium, if the recording medium identification information of the recording medium is found, However, it is possible to reliably identify the recording medium and prevent a catastrophic failure such as recording on the wrong recording medium. Furthermore, by recording the recording medium identification information on the entire recording medium, it is possible to obtain the recording medium identification information only by reproducing a part of the recording medium.
- the configuration for registering the recording medium identification information in the recording medium management information is written.
- the fifth aspect of managing the reliability of the recording medium by registering the medium reliability information is described. An embodiment will be described.
- Figure 7 shows the block configuration. This is because each block is the same as in the first embodiment, and that the record management information holder 43 holds and manages the recording medium management information. Same as the information holder 42, but has a function of processing medium reliability information.
- the recording medium is a tape
- the amount of errors that occur during playback increases due to scratches on the tape surface when the tape comes into contact with the cylinders or bosses that come into contact during travel, and eventually occurs.
- the media reliability can be improved.
- a recording medium with low reliability the possibility that data can no longer be reproduced becomes high
- the information is managed by the recording medium.
- the information holder 43 notifies the file data processor 44, and the file data processor 44 issues, for example, a warning to the user, performs reproduction from the recording medium, but does not perform recording on the recording medium. Processing such as not performing is performed.
- the value actually used as the media reliability information is the number of times the tape is accessed, the value is roughly, but roughly proportional to the amount of scratches on the tape surface. For example, when performing initialization,
- An operation called playback is performed to confirm whether the recording medium management information has been correctly recorded.
- the number of times that the tape is accessed is at least six times. Also, when recording data,
- the tape is accessed four times. However, this part of the tape is also accessed during the recording operation performed before and after this recording operation, so it is determined to be eight times. However, once the values for eight times have been added, do not access the previously recorded part when append recording is performed following the recording just performed. You do not need to add the value of When the tape is initialized again, the surface condition of the tape does not change. Therefore, the medium reliability information of the new recording management information is set to the value in the previous recording medium management information as the initial value.
- the present invention is applicable even when the data control device 21 controls a plurality of data recording / reproducing devices. It is also possible to instruct the data recording / reproducing device 26a to record and, at the same time, instruct the data recording / reproducing device 26b to play back, so as to copy / move the file.
- the data recording / reproducing device 26a and the data recording / reproducing device 26b may be devices having the same specification or devices having different specifications having the same function.
- the present invention can be applied to the fourth and fifth embodiments as they are. It is possible. This embodiment is shown in FIG. At this time, a configuration is also possible in which the data control device 21 and the data recording / reproducing device 26a are combined into one device, and the data recording / reproducing device 26b is connected.
- the method for generating the recording medium identification information and the medium reliability information in the above embodiment is an example, and the present invention is applicable to any generation method.
- FIGS. 9 (a) to 9 (b) and FIG. Figures 9 (a) to 9 (b) are recorded on DV tape
- DV file system an example of a file in a file system (hereinafter referred to as DV file system) that manages the divided data as a file, where 101 is a tape, 102 is a file, and 103 is a file divided by the file division method of the present embodiment.
- the resulting first file, 104 is a similarly generated second file.
- a DV file system can be constructed from recording medium management information composed of data as described in FIGS.
- the recording position (and size) of the file 102 can be represented by the recording start position and the recording end position on the tape 101.
- an absolute number (Absolute track no., Hereinafter abbreviated as ATN) is assigned to each track from the beginning of the tape, and the recording start position can be determined from this value.
- the recording end position is also managed at the same time, the number of tracks used is determined, and the file size can be determined.
- the file size is managed, the number of tracks used is determined, and the recording end position can be determined.
- the user wants to divide the data while watching the time code or other information dumped, or by looking at the monitor (not shown) that displays the reproduced image.
- the file 102 can be divided into two files at the division positions shown in FIG. 9 (a).
- the division of the file 102 can be done instantaneously because the data is not actually copied at all, just by changing the way the file is represented by the file system.
- FIG. 10 is a flow chart showing an example of the Fai / Le division anoregism.
- the processing is started from (Step 201), and the file 102 to be divided and the division position are specified in (Step 202).
- the designation method may be any method.
- Step 203 it is determined whether or not the division position is within the range of the file 102. If the division position is not within the range of the file 102, the process proceeds to (Step 208), and the division processing is terminated as "division failure". If the division position is within the range of the file 102, the process proceeds to (Step 204).
- Step 204 the file 102 is deleted from the recording medium management information to delete the file 102.
- Step 205 the file information of the first file 103 is generated and registered in the recording medium management information, thereby realizing the creation of the file 103.
- Step 206 the creation of the file 104 is realized by generating the file information of the second file 104 and registering it in the recording medium management information. After that, the process ends as "normal end" in (Step 2007).
- file division can be performed instantaneously.
- one file is divided into two files, but the present invention can be applied to a case where the file is divided into three or more files.
- the recording start position, recording end position, and division position of each file shown in FIGS. 9 (a) to 9 (b) are merely examples, and they may be located on any part of the tape. .
- the recording medium is assumed to be a tape
- one file is recorded in a continuous area on the recording medium, and a file recorded by a file system that expresses the file by its recording start position and recording end position.
- Other recording media may be used as long as they have a system that manages data.
- the files on the tape are managed using the recording start position and the recording end position.However, the files may be managed using the recording start position and the file size, and the recording start position and the recording end. It may be managed using the position and file size.
- the algorithm shown in FIG. 10 is an example, and the algorithm according to the present embodiment can be realized as long as the algorithm can appropriately rewrite the recording medium management information as a result.
- the present embodiment is a method
- the above-described file division is performed by providing the function of the present embodiment in the file management unit 22 in the configuration shown in FIGS. It is possible to realize a data control device or a data recording / reproducing device that performs the following.
- FIGS. 11 (a) to 11 (b) and FIG. FIGS. 11 (a) to 11 (b) are examples of files in the same file system as in the seventh embodiment, where 101 is a tape, 111 is a file, and 1 1 is a file.
- Reference numeral 2 denotes a file newly corrected by the file trimming method according to the present embodiment (referred to as a new file).
- Reference numerals 113a and 113b denote invalid data areas.
- ATN 200000 is a recording start position
- ATN 349999 is a recording end position. It is 15000 frames of data as NTSC video in DV.
- the cut portion of the file 111 becomes an invalid data area 113a at the beginning of the file 111, and an invalid data area 113b at the end of the file 111.
- the area where the data of the file managed by the file system is recorded is the valid data area, and the area where the data is not recorded is the invalid data area.
- the invalid data area can be used for future file recording. Unused area.
- the first data recording portion and the second data recording portion of the present invention described in claim 26 correspond to the invalid data areas 113a and 113b of the present embodiment.
- the file 11 can be trimmed at the force position shown in FIG. 11 (a).
- data of 15000 frames becomes data of 10,000 frames.
- the modification of the file 111 only changes the way the file is represented by the file system, and data is not actually copied at all, so the file can be divided instantly.
- Step 21 1 An example of a file trimming algorithm is shown in a flowchart in FIG. In FIG. 12, the process is started from (Step 21 1), and the file 11 to be trimmed and the trimming position are specified in (Step 212). It is not necessary to specify the position of the trimming before and after. In addition, any specification method may be used.
- step (213) it is determined whether or not each of the trimming positions is within the range of the file 111. If the division position is not within the range of the file 111, the process proceeds to (Step 217), and the trimming processing ends as “trimming failed”. If the trimming position is within the range of the file 111, the process proceeds to (Step 214).
- step 214 the recording start position of the file information of the file 111 is corrected and registered again in the recording medium management information. If trimming only the back, skip this process.
- Step 215 corrects the recording end position of file information of file 1 1 1 Correct and re-register in the recording medium management information. Skip this process if trimming only before. At this point, file 1 1 1 is modified to become the new file 1 1 2.
- the actual data movement on the tape does not occur at all, so that the file can be trimmed instantaneously.
- the recording start position, recording end position, and trimming position of each file shown in FIGS. 11 (a) to 11 (b) are merely examples, and these are shown on the tape. It can be anywhere.
- the recording medium is assumed to be a tape
- one file is recorded in a continuous area on the recording medium, and the file is recorded by a file system that expresses the file by its recording start position and recording end position.
- Other recording media may be used as long as they have a system that manages data.
- the files on the tape are managed using the recording start position and recording end position.
- the files may be managed using the recording start position and file size, and the recording start position and recording end position may be used. And may be managed using file size.
- the algorithm shown in FIG. 12 is an example, and the algorithm of the present embodiment can be realized as long as the algorithm can appropriately rewrite the recording medium management information as a result.
- FIGS. 13 (a) to 13 (b) and FIG. FIGS. 13 (a) to 13 (b) are examples of files in a file system similar to that of the seventh embodiment, where 101 is a tape, 121 and 122 are files, and 123 is a file in this embodiment. This is a file generated by the finale combining method.
- the recording start position of the file 121 is set as the recording start position of the file 123, and the recording end position of the file 122 is ended of the recording of the file 123.
- the file ⁇ ⁇ 23 can be generated as shown in FIG. 13 (b).
- the file ⁇ ⁇ 23 can be generated as shown in FIG. 13 (b).
- FIG. 14 is a flowchart showing an example of the joint anorego- rhythm of Huinore.
- Fig. 14 In, the processing is started from (Step 2 2 1), and the files 1 2 1 and 1 2 2 to be combined in (Step 2 2 2) are specified.
- the designation method may be any method.
- Step 2 2 3 it is determined whether or not the file 1 2 1 and the file 1 2 2 are continuous on the tape 101. If they are not consecutive, proceed to (Step 2 27) and terminate the combining process as “combining failure”. If they are continuous,
- Step 224 the file information of the file 122 and the file 122 is deleted from the recording medium management information, so that the file 121 and the file 122 are deleted.
- the creation of the file 123 is realized by generating the file information of the file 123 and registering it in the recording medium management information.
- the actual data movement on the tape does not occur at all, so that the files can be combined instantaneously.
- each file shown in FIGS. 13 (a) to 13 (b) are merely examples, and they may be located on any part of the tape.
- the recording medium is assumed to be a tape
- one file is recorded in a continuous area on the recording medium, and the file is recorded by a file system that expresses the file by its recording start position and recording end position.
- Other recording media may be used as long as they have a system that manages data.
- the files on the tape are managed using the recording start position and the recording end position.However, the files may be managed using the recording start position and the file size, and the recording start position and the recording end. It may be managed using the position and file size.
- the algorithm shown in FIG. 14 is an example, and the algorithm according to the present embodiment can be realized as long as the algorithm can appropriately rewrite the recording medium management information.
- the present embodiment is a method and a data control device or a data recording / reproducing device for performing the above-described file division by providing the functions of the present embodiment in the file management unit 22 having the configuration shown in FIGS. Can be realized.
- FIGS. 15 (a) to 15 (b) and FIG. FIGS. 15 (a) to 15 (b) are examples of files in the same file system as in the seventh embodiment, where 101 is a tape, 131 and 133 are files, and 132 is this embodiment. This file is deleted by the file deletion method described above.
- ATN 600000 is a recording start position
- ATN 720000 is a recording start position
- the NeXtFi1e recording start position (840000) indicates from which position to start recording the next file as shown in Figs. 6 (a) to 6 (b). Information.
- the file information of the file 132 may be deleted from the recording medium management information.
- the above-mentioned use prohibited area is continuous with the unused area.
- next start recording position is moved to the unused area shown in Fig. 15 (b). It becomes a part of 1 3 4 b and can be used.
- the state shown in FIG. 15 (c) is obtained.
- the file 132 can be deleted without increasing the unusable area on the tape. At this time, since no data was actually deleted, the file can be completely deleted instantly.
- step 2 3 1 start the processing, and specify the file 1 3 2 to be deleted in (step 2 3 2).
- the designation method may be any method.
- step 2 33 3 the file 13 2 is deleted by deleting the file information of the file 13 2 from the recording medium management information.
- step 234) if the file 132 is a file recorded from the end of the tape 101, the process proceeds to (step 235). If not, Proceed to step 2 3 6) and end as “Normal end”.
- Step 2 35 it is possible to reuse the area in which the file 13 was recorded by correcting the value of the NeXt Fi 1 e recording start position in the recording medium management information. I do.
- the file can be deleted instantaneously.
- the recording position and size of the file in the present embodiment on the tape are arbitrary, the number of files is two. However, even if one or more files are recorded, The invention is applicable, and the recording start position and the recording end position of the file may be anywhere on the tape. Also, the data recorded in the continuous area of the recording medium is managed and accessed as a file, the position immediately after the file recorded from the end is held as the NextFile recording start position, and then a new file is stored. When recording, other recording media may be used as long as they have a system that manages files recorded by a file system that starts recording from the NextFile recording start position.
- the algorithm shown in FIG. 16 is an example, and the algorithm of the present embodiment can be realized as long as the algorithm can appropriately rewrite the recording medium management information.
- the file management unit 22 having the configuration shown in FIGS. A reproduction device can be realized. Immediately before the file to be deleted, do not use a file but an invalid file as shown in Fig. It may be a data area. By moving the NextFile recording start position to the beginning of the invalid data area, it is possible to apply the embodiment of the present invention and obtain the same effect.
- a file handling method for automatically dividing a file when a user executes a copy command will be described.
- the file division process here does not require an explicit user instruction. This is different from the above embodiment. However, it is possible to reflect the user's intention in the division. This will be described later.
- Figure 17 is a conceptual diagram of copying files between devices with different file systems.
- 101 is a tape
- 141 is a file recorded on tape 101
- 10 is a file recorded on tape 101.
- Reference numeral 8 denotes a hard disk, 142-1—1, 142-2—1, 142-2—3, and 144-2-4: a tape 101, a node disk 108 (using a file copying method of the present embodiment).
- the files copied to HD D are the files copied to HD D).
- the file system that manages files recorded on tape 101 can handle file sizes of less than 1 TB, and the file system that manages files recorded on HDD 108 can handle file sizes of less than 4 GB. (When the file system is FAT32 system).
- One frame is 120000 bytes, so the file size is about 12 GB is there. Even if the free space of the HDD 108 is larger than 12 GB, the file 141 cannot be copied or moved to the HDD 108.
- FIG. 18 is a flowchart showing a method of copying the file 141 from the tape 101 to the HDD 108.
- the variable n is set to 1 in (step 241), and the process starts.
- Step 242 if the size of the file 141 is 4 GB or more, the process proceeds to (Step 243). If less than 4 GB, go to (Step 246).
- step 243 one file 142—n is copied from the head of the data stream of the file 141 that has not yet been copied to the HDD 108 as a single file 142—n until the copy amount reaches a predetermined size, or Continue copying until you reach F i 1 e End.
- step (244) it is confirmed whether or not all the files 141 have been copied. If all have been copied, proceed to (Step 247). If not finished, the variable n is reduced by 1 ⁇ in (Step 245), and the process returns to (Step 243).
- Step 246 since the size of the file 141 is less than 4 GB, the file is copied in the same manner as a normal file copy, and the process proceeds to (Step 247).
- step 247) the process ends as “normal end”.
- the copy source file is divided into four files each having a size of 3,240,000,000,000 bytes, but the size of the division is the maximum size that the copy destination file system can handle. Any value is fine if smaller than the size
- the present invention is applicable regardless of the number of divisions and the same size.
- the recording start position and the recording end position of the file shown in FIG. 17 are merely examples, and they may be located on any part of the tape, and the recording positions on the HDD 108 are also arbitrary.
- the tape is copied to the HDD managed by the FAT32 file system.However, the maximum size of the file that can be handled by the copy source recording medium and the file system that manages the copy destination recording medium is different. Any recording medium may be used as long as the recording medium is used.
- the algorithm shown in FIG. 18 is an example, and the algorithm according to the present embodiment can be realized as long as the algorithm is such that the copy source file is divided into a plurality of files at the copy destination and copied.
- each file is recorded on the same medium as the HDD, but actually, the files are recorded in different partitions, different media, or different devices. .
- a fixed size is used in the above embodiment, but a fixed number of frames may be used. It is also possible.
- the auxiliary information is monitored while the data is flowing, and the recording is divided at positions where the recording date and time are discontinuous (or may be separated at every elapse of a specific time), or divided according to the recording content (commercial cut, etc.). It is possible to divide at the position where it is determined that the recorded contents have been switched.
- the scene change may be detected by monitoring the video data itself, and division may be performed at the position of the scene change.
- FIGS. 19 (a) to 19 (b) are conceptual diagrams of copying files between devices having different file systems.
- 101 is recorded on the tape 101
- 151 is recorded on the tape 101.
- Files, 152-1, 152-2, 152-3, 152-4, 152-5 are files obtained by dividing the file 151
- 108 is a hard disk
- 153-1, 153-2, 153-3 , 153-4 and 153-5 are files copied from the tape 101 to the hard disk 108 (hereinafter, HDD) by the file copying method of the present embodiment.
- the file size that can be handled by the file system that manages the files recorded on the tape 101 is less than 1 TB, and the file system that manages the files that are recorded on the HDD 108 is less than 4 GB. 32 system).
- ATN 100000 is the recording start position
- ATN2 2079999 is the recording end position
- is data of 108000 frames ( 1 hour) as NTSC video in DV.
- One frame is 120000 bytes, so the file size is about 12 GB.
- the file size that can be handled by the file system that manages the files recorded on the tape 101 is less than 1 TB, and the file system that manages the files that are recorded on the HDD 108 is less than 4 GB. 32 system).
- ATN 2000000 is the recording start position
- One frame is 120000 bytes, so the file size is about 12 GB. Even when the free space of the HDD 108 is larger than 12 GB, the file 151 cannot be copied or moved to the HDD 108.
- the size of each file is 2,160,000,000 bytes ⁇ 3, 240,000,000 bytes ⁇ 2, 592,000,000 bytes ⁇ 1 , 080, 000,000,000 bytes / 3,888, 000,000,000 bytes.
- any file can be neatly converted into a data stream divided into Frame units.
- the copied files 142-1, 142-2, 142-3, 142-4 can be used alone or in combination. It is.
- FIG. 20 is a flowchart showing a method of copying the file 151 from the tape 101 to the HDD 108.
- processing starts from (Step 251) I do.
- Step 252 if the size of the file 151 is 4 GB or more, the process proceeds to (Step 253). If less than 4 GB, go to (Step 255).
- step 253 the file 151 is divided into n files 152-1 to 152-n, each having a size of less than 4 GB.
- the dividing method for example, the file dividing method according to the seventh embodiment of the present invention is used.
- step 254 the files 152-1 to: I52-n divided and created in (step 253) are copied to the HDD 108, respectively, and the files 153- :! 1 1 53—n, go to (Step 256) and end as “Normal end”.
- Step 255 since the size of the file 151 is less than 4 GB, the file 151 is copied from the tape 101 to the HDD 108 in the same manner as in a normal file copy, the process proceeds to (Step 256), and the process ends as “normal end”.
- the copy source file is divided into five files each having a size of a minute as a DV recording, but the size of the division can be handled by the copy destination file system. As long as it is smaller than the maximum size, any value is sufficient, it is not necessary to make the size the same, and the present invention is applicable regardless of the number of divisions.
- the recording start position and the recording end position of the file shown in FIG. 17 are merely examples, and they may be located on any part of the tape. 00 The position is also arbitrary.
- the example shown in FIG. 20 is an example.
- the method of the present embodiment can be implemented as long as the source file is divided at the copy source and each file is copied at the copy destination. .
- each file is recorded on the same medium as an HDD, but actually, the files are recorded in different partitions, different media, or different depices.
- a criterion for judging the position at which the file is to be divided an appropriate size is used in the above embodiment, but a fixed number of frames may be used, or the remaining criterion may include the remaining capacity check of the HDD. .
- the auxiliary information is monitored while the data is flowing, and the recording is divided at positions where the recording date and time are discontinuous (or may be separated at every elapse of a specific time), or divided according to the recording content (commercial cut, etc.). It is possible to divide at the position where it is determined that the recorded contents have been switched.
- the scene change may be detected by monitoring the video data itself, and division may be performed at the position of the scene change.
- FIG. 21 is a block diagram showing the overall configuration of a PC according to the thirteenth embodiment of the present invention, wherein 301 is a processor, 302 is a memory, 303 is a bus, 304 is 1 EEE 1394 I / F, and 305 is an SCS II / F, 306 is I EEE1394
- FIG. 22 is a diagram showing an example of an operation of extracting only the data portion from the data stored in the reception buffer 310 and writing the data on the HDD 307, and 324 conceptually represents a file on the HDD 307. It was done.
- the configuration of the data 308 input from the DV 306 will be described.
- Figure 23 (a) shows the configuration of a bucket (Common Isochronous Packet, abbreviated as CIP) for actually transferring data.
- CIP Common Isochronous Packet
- FIG. 23 (b) shows the configuration of DIFb10ck331.
- the data portion is composed of a 3 Bytes DIFFhead er and a 77 Bytes data portion.
- FIG. 23 (c) it is explained that, in the case of NTSC DV data, 1 frame data is composed of 1500 DIFb1Ock331. In the case of DV data of the PAL system, 1 frame data is composed of 1800 DIF 1 o c k 331.
- the number is 250 or 300 per Fram.
- CIP Nullcket
- the processor 301 transmits to the SCS I / F 305 an instruction to write the data portion 321 of the CIP 323 written in the reception buffer 310 to the file 324 on the HDD 307. At this time, the processor 301 calculates, based on the value of the DIF header of the DIF block included in the data section 321, which data in one frame is to be written and which position in the file 324 should be written, The calculated position is transmitted to the SCS II / F 305 at the same time.
- the process of writing the respective data portions for example, the data portions 321b and 321c of the CIP 323b and CIP 323c
- the data stream written on the HDD 307 by the above operation eliminates unnecessary data such as Nu11 packet, and rearranges it into accurate frame units with appropriate intervals even if data is missing. Have been.
- the processing performed is one write to the memory (receive buffer), one transfer to the memory (receive buffer) and HDD, and one write to the HDD. High-speed processing can be performed to the maximum. Note that the number of the reception buffers 310 provided on the memory 302 may be one or more.
- the data transmitted in the bucket is output data from DV in accordance with the NTSC or PAL system, but output data from DV that handles other formats such as Hi Vision, EDTV, MPEG, etc.
- the present invention can be applied to other data.
- the IEEE 1394 I / F may be an interface for receiving a packet composed of a data part and a header part
- DV is another device for outputting a bucket composed of a data part and a header part. It does not matter.
- the SCS I / F may be another interface
- the HDD may be another recording medium in which a data recording position can be freely specified.
- FIGS. 24 (a) to 24 (c) are diagrams for explaining the case where this is carried out using a floppy disk.
- FIG. 24 (a) is a diagram showing an example of a physical format of a floppy disk as a recording medium main body.
- a track is created concentrically from the outer circumference to the inner circumference, and is divided into 16 sectors in the angular direction.
- the program is recorded according to the allocated area.
- FIG. 24 (b) is a diagram illustrating a case for storing the floppy disk. From the left, a front view of the floppy disk case, its cross-sectional view, and a floppy disk are shown. By storing the floppy disk in the case in this way, the disk can be protected from dust and external impact and can be transported safely.
- FIG. 24 (c) is a diagram for explaining recording and reproduction of a program on a floppy disk.
- a floppy disk drive By connecting a floppy disk drive to the computer system as shown in the figure, it becomes possible to record and reproduce programs on the disk.
- the disk is inserted into the floppy disk drive through the insertion slot, and is ejected.
- a program for realizing the present invention is stored by recording a program from a computer system on a disk by a floppy disk drive.
- a floppy disk drive reads the program from the disk and transfers it to a computer system to create an environment for implementing the invention.
- the present invention can be similarly performed using an optical disk.
- the recording medium is not limited to this, and programs such as IC cards, ROMs, cassettes, etc. Anything that can be recorded can be implemented in the same way.
- the large-capacity file can be handled as an appropriate-capacity file on a recording medium, so that immediately after recording It is possible to minimize the time required to confirm whether the data has been correctly recorded in the file, and to make the data to be re-recorded at the time of the confirmation a part of the file instead of the entire file, so that the data can be efficiently Will be able to record Also, on a tape, if one recording block is erroneous at the time of playback, the other recording block is unlikely to be erroneous. It is greatly improved.
- the recording medium identification information of the recording medium can be determined by generating the recording medium identification information that does not match between the recording media, registering the information in the recording medium management information, and recording the information on the recording medium. If this is the case, it is possible to identify the recording medium without fail, and to prevent a catastrophic failure such as recording on the wrong recording medium. Furthermore, by recording the recording medium identification information on the entire recording medium, it is possible to obtain the recording medium identification information only by reproducing a part of the recording medium. Also, by managing the medium reliability information, the danger that the recorded data cannot be reproduced can be almost eliminated, and the error correction capability can be greatly improved.
- the present invention for example, when a file recorded on a tape is divided, no actual data copy / movement on the tape occurs, so that the file is divided, trimmed, combined, and deleted. Can be performed instantaneously. If the last file recorded on the tape is deleted, the deleted area will be reused when recording a new file, so the area that cannot be used when the file is deleted It has become possible to reduce the increase.
- the present invention for example, when copying a large-capacity file to the HDD, it is possible to copy while automatically dividing the file, or to copy the file automatically after dividing the file. This allows copying between two storage media with different maximum file sizes that can be handled. Further, according to the present invention, for example, of the data written in the reception buffer, necessary data can be directly written to the hard disk without being transferred to another buffer and reformed, The writing process can be performed at high speed while shaping the data.
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Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98961374A EP0962866A1 (en) | 1997-12-18 | 1998-12-16 | File storage method, data storage apparatus, storage media management method, file management method, method of writing received data in storage media, and program storage media |
KR1019997007468A KR20000071178A (ko) | 1997-12-18 | 1998-12-16 | 파일기록방법, 데이터 기록장치, 기록매체 관리방법, 파일의 취급방법, 수신데이터를 기록매체에 기입하는 방법 및 프로그램 기록매체 |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/348942 | 1997-12-18 | ||
JP9348942A JPH11184791A (ja) | 1997-12-18 | 1997-12-18 | 計算機における受信データの記録媒体への書き込み方法、及び計算機における受信データの記録媒体への書き込み方法を記載したプログラムを記録した記録媒体 |
JP4694798A JPH11249819A (ja) | 1998-02-27 | 1998-02-27 | ファイルシステムにおけるファイルの取り扱い方法、およびファイルシステムにおけるファイルの取り扱い方法を記載したプログラムを記録した記録媒体 |
JP10/46947 | 1998-02-27 | ||
JP13486198A JPH11328869A (ja) | 1998-05-18 | 1998-05-18 | ファイル記録方法とデータ記録装置 |
JP10/134863 | 1998-05-18 | ||
JP13486398A JPH11328930A (ja) | 1998-05-18 | 1998-05-18 | カセット管理方法とデータ記録装置 |
JP10/134861 | 1998-05-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999031590A1 true WO1999031590A1 (fr) | 1999-06-24 |
Family
ID=27461966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/005696 WO1999031590A1 (fr) | 1997-12-18 | 1998-12-16 | Procede de memorisation de fichiers, appareil de memorisation de donnees, procede de gestion de supports d'information, procede de gestion de fichiers, procede d'ecriture des donnees recues dans les supports d'information, et supports de memorisation de programmes |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0962866A1 (ja) |
KR (1) | KR20000071178A (ja) |
CN (1) | CN1252141A (ja) |
TW (1) | TW409223B (ja) |
WO (1) | WO1999031590A1 (ja) |
Cited By (3)
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EP1067543A1 (en) * | 1998-11-02 | 2001-01-10 | Matsushita Electric Industrial Co., Ltd. | Data transmitting/receiving device and method |
KR100476490B1 (ko) * | 2000-06-26 | 2005-03-18 | 마쯔시다덴기산교 가부시키가이샤 | 오디오 및 비디오 기록 및 재생 장치 |
US7876647B2 (en) | 2003-06-11 | 2011-01-25 | Sony Corporation | Information processing apparatus and method, program and recording medium |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2002095751A1 (fr) * | 2001-05-24 | 2002-11-28 | Sony Corporation | Procede d'enregistrement, appareil d'enregistrement et support d'enregistrement |
IL165317A0 (en) | 2002-05-22 | 2006-01-15 | Teac Aerospace Technologies In | Video and audio recording using file segmentation to reserve the integrity of critical data |
JP5242914B2 (ja) * | 2003-03-17 | 2013-07-24 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | ディジタル情報信号のリアルタイムストリームを格納する装置及び方法 |
WO2005010757A1 (ja) * | 2003-07-24 | 2005-02-03 | Matsushita Electric Industrial Co., Ltd. | ファイル管理方法及び情報処理装置 |
GB2419221B (en) | 2004-10-14 | 2009-12-02 | Hewlett Packard Development Co | Tape drive apparatus |
KR100714691B1 (ko) * | 2005-05-04 | 2007-05-04 | 삼성전자주식회사 | 파일 시스템에 추가 정보를 저장하고 관리하는 장치 및방법 |
US8028004B2 (en) * | 2005-08-26 | 2011-09-27 | Panasonic Corporation | Data recording system, data recording method and data recording program |
JP4253348B2 (ja) * | 2006-06-08 | 2009-04-08 | 株式会社東芝 | 情報配信システムとこのシステムに用いられる配信センター装置及びユーザ端末装置 |
JP4285512B2 (ja) * | 2006-07-31 | 2009-06-24 | ソニー株式会社 | 記録装置、記録方法、再生装置、再生方法、記録再生装置、記録再生方法、撮像記録装置及び撮像記録方法 |
KR101043178B1 (ko) * | 2007-02-27 | 2011-06-20 | 미쓰비시덴키 가부시키가이샤 | 정보 배송 방법, 정보 기록 방법, 정보 재생 방법, 및, 정보 기록 매체 |
KR100888967B1 (ko) | 2007-09-10 | 2009-03-17 | 엘지전자 주식회사 | 저장매체 포맷 방법 및 장치 |
WO2013080243A2 (en) * | 2011-11-28 | 2013-06-06 | Hitachi, Ltd. | Storage system controller, storage system, and access control method |
CN103714007B (zh) * | 2012-09-29 | 2017-02-08 | 联想(北京)有限公司 | 一种写数据的方法及电子设备 |
CN103179193B (zh) * | 2013-02-21 | 2016-08-03 | 用友网络科技股份有限公司 | 用于分布式应用系统的数据传输系统和数据传输方法 |
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- 1998-12-16 EP EP98961374A patent/EP0962866A1/en not_active Withdrawn
- 1998-12-16 WO PCT/JP1998/005696 patent/WO1999031590A1/ja not_active Application Discontinuation
- 1998-12-16 CN CN98803954A patent/CN1252141A/zh active Pending
- 1998-12-16 KR KR1019997007468A patent/KR20000071178A/ko not_active Application Discontinuation
- 1998-12-17 TW TW087121079A patent/TW409223B/zh active
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JPH07141232A (ja) * | 1993-11-15 | 1995-06-02 | Hitachi Ltd | ファイル格納管理装置 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1067543A1 (en) * | 1998-11-02 | 2001-01-10 | Matsushita Electric Industrial Co., Ltd. | Data transmitting/receiving device and method |
EP1067543A4 (en) * | 1998-11-02 | 2005-08-03 | Matsushita Electric Ind Co Ltd | DATA TRANSMISSION / RECEIVING DEVICE AND METHOD |
KR100476490B1 (ko) * | 2000-06-26 | 2005-03-18 | 마쯔시다덴기산교 가부시키가이샤 | 오디오 및 비디오 기록 및 재생 장치 |
US7106953B2 (en) | 2000-06-26 | 2006-09-12 | Matsushita Electric Industrial Co., Ltd. | Audio and video recording and reproduction apparatus |
US7876647B2 (en) | 2003-06-11 | 2011-01-25 | Sony Corporation | Information processing apparatus and method, program and recording medium |
Also Published As
Publication number | Publication date |
---|---|
TW409223B (en) | 2000-10-21 |
EP0962866A1 (en) | 1999-12-08 |
KR20000071178A (ko) | 2000-11-25 |
CN1252141A (zh) | 2000-05-03 |
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