WO2006033340A1 - 記録装置及び方法、並びにコンピュータプログラム - Google Patents
記録装置及び方法、並びにコンピュータプログラム Download PDFInfo
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- WO2006033340A1 WO2006033340A1 PCT/JP2005/017355 JP2005017355W WO2006033340A1 WO 2006033340 A1 WO2006033340 A1 WO 2006033340A1 JP 2005017355 W JP2005017355 W JP 2005017355W WO 2006033340 A1 WO2006033340 A1 WO 2006033340A1
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- data
- recording
- mode
- verification
- differential
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1816—Testing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1883—Methods for assignment of alternate areas for defective areas
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B2020/10833—Copying or moving data from one record carrier to another
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B2020/10833—Copying or moving data from one record carrier to another
- G11B2020/10842—Copying or moving data from one record carrier to another wherein not all recorded data are copied or moved
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1816—Testing
- G11B2020/1823—Testing wherein a flag is set when errors are detected or qualified
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
Definitions
- the present invention relates to a recording apparatus and method such as a DVD recorder, and a technical field of a computer program that causes a computer to function as such a recording apparatus.
- differential management As a technique for improving the reliability of data recording and reading on a high-density recording medium such as an optical disk, a magnetic disk, and a magneto-optical disk, there is differential management. That is, when there are scratches or dust present on the recording medium, or deterioration of the recording medium (collectively referred to as “different”), the data to be recorded or recorded at the place where the diffuse is present. Data is recorded in another area on the recording medium (this is called the “spare area”). In this way, the reliability of data recording and reading can be improved by saving in the spare area the data that may cause recording failure or reading failure due to differential (see Patent Document 1).
- Patent Document 1 Japanese Patent Application Laid-Open No. 11 185390
- the present invention has been made in view of, for example, the above-described conventional problems.
- a recording apparatus and method capable of quickly backing up data while improving the reliability of data recording and reading, and It is an object to provide a computer program that causes a computer to function as such a recording device.
- the recording apparatus of the present invention backs up data recorded on one recording medium to another recording medium, and at least the data among the other recording media is backed up.
- Verification means for verifying the presence / absence of a differential in the recording area
- selection means for selecting a verification mode for verifying the presence / absence of the differential according to the characteristics of the backed up data, and the selected detection
- a control means for controlling the verification means so as to verify the presence or absence of the differential in the verification mode.
- the recording apparatus of the present invention it is possible to back up data recorded on one recording medium to another recording medium by the operation of the backup means.
- “backup” in the present invention refers to the entire operation of recording data recorded on one recording medium and recorded on another recording medium. The purpose. At this time, due to the operation of the verification means, the data of other recording media as backup destinations The presence or absence of differentials in the recording area that has been knocked up (ie, recorded by the knock-up means) is verified. That is, it is determined whether or not the force exists in the differential.
- a predetermined verification mode that defines the mode of the verification operation is selected by the operation of the selection unit prior to or in parallel with the verification operation by the verification unit.
- one verification mode is selected from a plurality of verification modes according to the characteristics of the data to be knocked up. Then, the verification means is controlled by the operation of the control means so that the differential verification operation based on the selected one verification mode is performed.
- one verification mode is selected in which a differential verification operation capable of relatively shortening the time required for backing up data is performed.
- one verification mode is selected in which a differential verification operation capable of relatively improving the reliability of data recording and reading is performed.
- the time required to execute the knock-up and the reliability of data recording and reading can be set to desired values. it can. Therefore, depending on the characteristics of the data to be knocked up, it may be more important to shorten the time required to back up the data or to improve the reliability of data recording and reading. it can. Of course, it is important to focus on both reducing the time required to back up data and improving the reliability of data recording and reading.
- the recording apparatus of the present invention it is possible to improve the reliability of data recording and reading while reducing the time required for backing up the data.
- the selection unit selects the verification mode according to the data type of the data as the characteristic.
- the selecting unit selects the verification mode according to the size of the data as the characteristic.
- a verification mode in which importance is placed on shortening the time required to back up the data is selected, or, for example, the reliability of data recording and reading is selected. It is possible to select a verification mode that emphasizes improvement in performance.
- the selection unit selects the verification mode as the characteristic according to the purpose of use of the data.
- the time required for backing up the data is reduced.
- a verification mode that emphasizes shortening can be selected, or a verification mode that emphasizes, for example, improvement in data recording and reading reliability can be selected.
- the selection unit selects the verification parameter as the characteristic according to a time required for backing up the data.
- a verification mode in which importance is placed on shortening the time required for backing up data is selected, or for example, It is possible to select a verification mode that places importance on improving the reliability of recording and reading.
- the selection unit selects the verification mode according to a degree of influence of the presence of the data on the reading of the data as the characteristic. To do.
- the degree of influence V of the presence of the differential on the reading of the data is small, for example, the data is backed up rather than focusing on the improvement of the reliability of the recording and reading of the data. Therefore, it is possible to select a verification mode that places more emphasis on shortening the time required for this. Or, if the degree of influence of the presence of differentials on the reading of data is large, for example, improving the reliability of data recording and reading rather than placing more emphasis on reducing the time required to back up data It is possible to select a verification mode that places more emphasis on.
- the selection unit is configured to back up the data.
- the verification mode is selected so that the intervals are averaged.
- Another aspect of the recording apparatus of the present invention further includes an external designating unit for designating the verification parameter from the outside, and the control unit adds to the verification mode selected by the selection unit.
- the verification means is controlled so as to verify the presence or absence of the defattate in the verification mode specified by the external specification means.
- the verification mode can be selected by an instruction from a user or the like using the external designation means. Therefore, according to the user's preference, for example, a verification mode that emphasizes shortening of the time required to back up data is selected, or a verification mode that emphasizes improvement of data recording and reading reliability, for example. Can be selected.
- a designation flag that designates the verification parameter is recorded on the other recording medium, and the control means designates the verification designated by the designation flag.
- the verification means is controlled so as to verify the presence or absence of the differential in the mode.
- Another aspect of the recording apparatus of the present invention further includes storage means for storing correspondence information between characteristics of the data to be backed up and the verification mode when the data is backed up, The means selects the verification mode based on the stored correspondence information.
- the selection unit can select the verification mode relatively easily and appropriately based on the correspondence information.
- the verification parameter is used as the verification mode to verify presence / absence of a differential in the entire recording area where the data is backed up.
- Complete mode and a differential in a recording area in which control information for controlling at least one of recording and reproduction of the data is recorded in a recording area in which the data is knocked out among recording areas in which the data is backed up.
- At least one of a real-time mode for verifying the presence / absence of a defect a real-time mode for verifying the presence / absence of a differential in the real-time mode, and an off mode in which the presence / absence of a differential in the entire recording area where the data is backed up is not verified.
- the off mode is selected. For example, when importance is attached to improving the reliability of data recording and reading.
- the complete mode is selected, and the real-time mode is selected when, for example, both the reduction of the time required to back up the data and the importance of improving the reliability of data recording and reading are emphasized. . Therefore, it is possible to back up more suitably according to the characteristics of the recorded data.
- the selection unit dynamically selects the verification mode during the backup of the data by the recording unit, and the control unit includes the recording unit.
- the verification means is dynamically controlled during the backup of the data.
- the recording method of the present invention backs up data recorded on one recording medium to another recording medium, and at least the data of the other recording medium is backed up.
- a verification step for verifying the presence / absence of a differential in a recording area a selection step for selecting a verification parameter indicating a verification mode when verifying the presence / absence of the differential according to the characteristics of the data to be backed up, and A control step of controlling the verification step so as to verify the presence or absence of the differential in a mode indicated by a verification parameter.
- the recording method according to the present invention can also adopt various aspects.
- a computer program according to the present invention is a recording control computer program for controlling a computer provided in the above-described recording apparatus of the present invention (including various aspects thereof),
- the computer is caused to function as at least a part of the backup unit, the verification unit, the selection unit, and the control unit.
- the computer program of the present invention if the computer program is read from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, and a hard disk that stores the computer program and then executed by the computer, Alternatively, if the computer program is downloaded to a computer via communication means and then executed, the above-described recording apparatus of the present invention can be realized relatively easily.
- the computer program of the present invention can also adopt various aspects.
- a computer program product in a computer-readable medium is a program instruction that can be executed by a computer provided in the information reproducing apparatus of the present invention (including various aspects thereof).
- the computer is caused to function as at least a part of the backup means, the verification means, the selection means, and the control means.
- the computer program product of the present invention if the computer program product is read into a computer from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product, or
- a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product
- the computer program product which is a transmission wave
- the computer program product includes the backup means of the present invention described above, A computer-readable code (or computer-readable instruction) that functions as at least a part of the verification unit, the selection unit, and the control unit may be included.
- the backup unit, the verification unit, the selection unit and the control unit, or the backup step, the verification step, the selection step and the control step are provided. Therefore, it is possible to quickly back up data while improving the reliability of data recording and reading.
- FIG. 1 is a block diagram conceptually showing the basic structure of a recording / reproducing apparatus as an embodiment of the recording apparatus of the present invention.
- FIG. 2 is a block diagram conceptually showing the internal structure of a disk drive provided in the recording / reproducing apparatus in the example.
- FIG. 3 is a block diagram conceptually showing the internal structure of the back end included in the recording / reproducing apparatus in the example.
- FIG. 4 is a flowchart conceptually showing a flow of the entire backup operation of the recording / reproducing apparatus in the example.
- FIG. 5 is a data structure diagram conceptually showing a mode of a backup operation of the recording / reproducing apparatus in the example.
- FIG. 6 is a data structure diagram conceptually showing a mode of a shift verification operation of the recording / reproducing apparatus in the example.
- FIG. 7 is a data structure diagram showing differential management information used for differential verification operation of the recording / reproducing apparatus in the example.
- FIG. 8 is an explanatory diagram conceptually showing one more specific operation example when performing a backup operation of the recording / reproducing apparatus in the example.
- FIG. 9 is an explanatory diagram conceptually showing another more specific operation example when performing the backup operation of the recording / reproducing apparatus in the example.
- FIG. 10 is an explanatory diagram conceptually showing another more specific operation example when performing the backup operation of the recording / reproducing apparatus in the example.
- FIG. 11 is an explanatory diagram conceptually showing another more specific operation example when performing the backup operation of the recording / reproducing apparatus in the example.
- FIG. 12 is a data structure diagram conceptually showing mode storage information used in a modified example of the recording / reproducing apparatus in the example.
- FIG. 1 is a block diagram conceptually showing the basic structure of a recording / reproducing apparatus 200 that is an embodiment of the recording apparatus of the present invention.
- FIG. FIG. 3 is a block diagram conceptually showing the internal structure of the disk drive 300 provided in 00
- FIG. 3 is a block diagram conceptually showing the internal structure of the back end 400 provided in the recording / reproducing apparatus 200.
- the recording / reproducing apparatus 200 has a function of recording data on the optical disc 100 and also has a function of reproducing data recorded on the optical disc 100.
- the optical disc 100 that actually constitutes one specific example of “another recording medium” of the present invention is loaded, and data recording and data reproduction are performed.
- the knock end 400 corresponds to a host computer such as a personal computer.
- the disk drive 300 includes a spindle motor 351, an optical pickup 352, an RF amplifier 353, and a servo circuit 354.
- the spindle motor 351 is a motor that rotates the optical disc 100.
- the optical pickup 352 constitutes one specific example of “backup means” in the present invention, and records data or the like on the recording surface by irradiating the recording surface of the optical disc 100 with a light beam. At the same time, it is a device that reads the data recorded on the recording surface by receiving the reflected light of the light beam. The optical pickup 352 outputs an RF signal corresponding to the reflected light of the light beam.
- the RF amplifier 353 amplifies the RF signal output from the optical pickup 352 and outputs the RF signal to the modulation / demodulation unit 355. Further, the RF amplifier 353 generates a wobble frequency signal WF, a track error signal TE, and a focus error signal FE from the RF signal, and outputs them.
- the servo circuit 354 is a servo control circuit that controls the driving of the optical pickup 352 and the spindle motor 351 based on the track error signal TE, the focus error signal FE, and other servo control signals.
- the disk drive 300 includes a modulation / demodulation unit 355, a buffer 356, an interface 357, and a light beam driving unit 358, as shown in FIG.
- the modulation demodulator 355 has a function of performing error correction on data at the time of reading, and a function of adding an error correction code to data at the time of recording and modulating the data It is. Specifically, the modulation / demodulation unit 355 demodulates the RF signal output from the RF amplifier 353 at the time of reading, performs error correction on the RF signal, and outputs this to the buffer 356. Further, the modulation / demodulation unit 355 performs error correction on the demodulated RF signal, and as a result, when error correction is impossible or the number of codes subjected to error correction exceeds a certain reference value, An error signal indicating this is generated and output to the defect detection unit 359.
- the modulation / demodulation unit 355 adds an error correction code to the recording data output from the buffer 356 during recording, and then modulates the data so that the code matches the optical characteristics of the optical disc 100. Then, the modulated data is output to the light beam driving unit 358.
- the nother 356 is a memory circuit that temporarily stores data.
- the interface 357 is a circuit that performs input / output control or communication control of data and the like between the disk drive 300 and the back end 400. Specifically, the interface 357 outputs data output from the buffer 356 (that is, data read from the optical disc 100) to the back end 400 in response to a request command from the back end 400 during reproduction. Further, the interface 357 receives data input to the disk drive 300 from the knock end 400 force during recording, and outputs this to the buffer 356. Further, the interface 357 outputs all or part of the differential list held in the differential management information creation unit 360 to the back end 400 in response to a request command from the back end 400.
- the light beam drive unit 358 generates a light beam drive signal corresponding to the data output from the modulation / demodulation unit 355 during recording, and outputs this to the optical pickup 352.
- the optical pickup 352 modulates the light beam based on the light beam drive signal and irradiates the recording surface of the optical disc 100. As a result, data and the like are recorded on the recording surface.
- the disk drive 300 includes a differential detection unit 359, a differential management information creation unit 360, and a differential management mode selection unit 362.
- the differential detection unit 359 constitutes a specific example of the “verification unit” in the present invention, and is a circuit that detects the differential of the optical disc 100. Then, the differential detection unit 359 generates a differential detection signal indicating the presence / absence of the differential and outputs it. Di The fatte detection unit 359 performs differential detection based on the result of error correction of data at the time of reading (verifying or reproducing) information. As described above, the modulation / demodulation unit 35 5 performs error correction on the demodulated RF signal, and as a result, error correction is impossible, or the number of error-corrected codes is a certain reference value. When the value exceeds the value, an error signal substantially indicating the fact is generated and output to the differential detection unit 359. When the error detection unit 359 receives this error signal, it outputs a difference detection signal indicating that a difference exists.
- the differential management information creation unit 360 is a circuit that creates or updates differential management information 120 (see FIG. 7) described later based on the defect detection signal output from the differential detection unit 359.
- the differential management information 120 is stored in a rewritable state in a storage circuit provided in the differential management information creation unit 360. Further, the differential management information creation unit 360 outputs the differential management information 120 to the back end 400 via the interface 357 in response to a request command from the knock end 400.
- the differential management mode selection unit 362 constitutes one specific example of the “selection means” in the present invention, and a circuit that selects a management mode that defines the operation of the detection of the differential performed by the differential detection unit 359 It is.
- a management mode that defines the operation of the detection of the differential performed by the differential detection unit 359 It is.
- one of d effect management modes that is, one specific example of “verification mode” in the present invention
- ANSI MMC American National Standard Institute Multimedia Command Set
- the differential detection unit 359 is controlled by the CPU 360 that constitutes a specific example of the “control means” in the present invention, and each of the three differential management modes defined by ANSI MMC. It is configured to be able to detect the differential in response to These differential management modes will be described in detail later.
- the disk drive 300 has a CPU 361.
- CPU361 Controls the exchange of information between elements.
- the CPU 361 controls the recording operation and the reading operation of the data and differential management information 120.
- the CPU 361 has a back end 40 Controls data exchange between the disk drive 300 and the backend 400 in response to a control command sent from 0 or no request command.
- FIG. 3 shows an example of the internal configuration of the back end 400.
- the back end 400 performs reproduction processing on the data read from the optical disk 100 by the disk drive 300, and receives data supplied from the external hard disk 455 or an external hard disk 455 for the purpose of recording on the optical disk 100. Is a device that sends out to the disk drive 300.
- the knock end 400 includes a drive control unit 451, a system control unit 452, a differential management unit 453, a data input / output control unit 454, a hard disk 455, an operation Z display control unit 461, a display panel 462, and “external designation” in the present invention. Configure a specific example of "means"! / The operation button 463 which speaks is provided.
- the drive control unit 451 is a circuit that controls reading processing and recording processing of the disk drive 300.
- the operation of reading data from the optical disc 100 and reproducing it and the operation of receiving data from the data input / output control unit 454 and recording it on the optical disc 100 are performed in cooperation with the knock end 400 and the disc drive 300. .
- the drive control unit 451 realizes cooperation between the knock end 400 and the disk drive 300 by controlling the reading process and the recording process of the disk drive 300.
- the drive control unit 451 requests the disk drive 300 to read, record, output data from the buffer 356, and output the differential management information 120 from the differential management information creation unit 360. Output the command.
- the drive control unit 451 performs input / output control for controlling the input / output of data and shift management information 120 and other various control information with respect to the disk drive 300.
- the system control unit 452 controls the drive control unit 451, the differential management unit 453, the data input / output control unit 454, the operation Z display control unit 461, etc. It is a circuit which performs.
- the system control unit 456 controls the drive control unit 451, the differential management unit 453, the data input / output control unit 454, the operation Z display control unit 461, etc. I do.
- the system control unit 452 provides the disk drive 300 and the back end 400 during playback and recording. In order to realize this cooperation, the disk controller 300 is controlled together with the drive controller 451 (for example, generation / transmission of various request commands, reception of response signals, etc.).
- the differential management unit 453 has a storage circuit therein, receives all or a part of the differential management information 120 created and updated by the differential management information creation unit 360 of the disk drive 300, and receives it. Has the function to hold. Then, the differential management unit 453 performs differential management together with the system control unit 451.
- the data input / output control unit 454 controls input / output of data from the outside to the back end 400 or from the hard disk 455, and stores and retrieves data in a data buffer on a memory (not shown).
- the data input / output is a video signal
- the received data is compressed (encoded) to the MPEG format when the data is input, and then output, and when the data is output, the MPEG format data received from the memory is decompressed (decoded).
- Output The data input / output control unit 454 controls input / output of data from the outside to the back end 400 or from the hard disk 455, and stores and retrieves data in a data buffer on a memory (not shown).
- the hard disk 455 constitutes one specific example of “one recording medium” in the present invention, and is a magnetic recording medium having a recording capacity of, for example, several tens of GB.
- text data created by a user of a personal computer as a specific example of the knock end 400, or various data such as image data and moving image data can be recorded.
- the operation Z display control unit 461 is for receiving and displaying an operation instruction for the recording / reproducing device 200.
- the Z control unit 461 transmits an instruction by the operation button 463 such as recording or reproduction to the system control unit 452, so that recording or reproduction is performed.
- the household device which is an example of the recording / reproducing device 200, is a recorder device that records and reproduces video.
- This recorder device is a device that records a video signal from a broadcast receiving tuner or an external connection terminal on a disc, and outputs the video signal reproduced from the disc camera to an external display device such as a television.
- FIGS. 4 is a flowchart conceptually showing the overall flow of the backup operation of the recording / reproducing apparatus 200, and FIG. 5 shows the mode of the knock-up operation.
- Fig. 6 is a conceptual data structure diagram.
- Fig. 6 is a data structure diagram conceptually showing the mode of the out-of-diff verification operation.
- Fig. 7 is a data structure diagram showing the differential management information used in the differential verification operation. is there.
- a backup operation for copying data recorded on the hard disk 455 to the optical disc will be described among operations performed by the recording / reproducing apparatus 200.
- the data recording operation on the hard disk 455 and the data recording operation on the optical disc 100 can be performed in the same manner as in a normal recording / reproducing apparatus.
- the optical disc 100 is loaded onto the disc drive 300 prior to the backup operation.
- various parameters necessary for data backup operation that is, recording operation
- the power of the laser beam is set.
- the characteristics of the data (or file) to be backed up are acquired under the control of the CPU 361 or the system control unit 452 (step S 101).
- the data size and data type of data to be knocked up for example, text data, word processing document data, image data, video data, audio data, drawing data, management data, etc.
- the purpose of use, etc. are obtained as data characteristics.
- the time required for backup in at least one of the three differential management modes defined by ANSI MMC is acquired as the data characteristics.
- all data recorded on the hard disk 455 may be backed up. However, as shown in FIG. 5, a part of the data recorded on the hard disk 455 is recorded. Is preferably configured to selectively back up the data. When all data is backed up, the characteristics of all the data need to be acquired. However, when part of the data is selectively backed up, the characteristics of this part of the data are It is enough if it is acquired. The manner of selectively backing up some of this data will be described in more detail with reference to FIG. For example, it is assumed that data as shown in FIG. 5A is recorded in the hard disk 455 as the backup source.
- data # 0—1 whose data name is AA ”and whose update date and time (that is, the date and time last recorded on the hard disk 455) is“ July 9, 2004 ”and the data name is“ BB ”.
- Data # 0—2 whose update date is "July 26, 2004” and data # 0 whose data name is "CC” and its update date is "March 1, 2004"# 0 — Assume that data # 0—4 with data name “DD” and update date “July 31, 2004” is recorded.
- data # 1— 1 whose data name is “AA” and its update date is “July 9, 2004”, and its data name is “BB” and its update date power is July 9, 2004. It is assumed that data # 1—2 that is “day” and data # 1-3 that is data name S “CC” and its update date / time power is March 1, 2004 ”are recorded.
- the data # 0-1 recorded on the hard disk 455 and the data # 1 1 recorded on the optical disc 100 have the same data name and the same update date / time. Therefore, it is determined that the data is exactly the same. Therefore, it is determined that the data # 0-1 recorded in the hard disk 455 does not need to be knocked up. Similarly, data # 0—3 recorded on hard disk 455! / Is judged to be in need of backup.
- data # 0-2 recorded on the hard disk 455 and data # 1 2 recorded on the optical disc 100 have the same data name but not the same update date / time.
- the update date of data # 0-2 recorded on hard disk 455 is newer than the update date of data # 1-2 being recorded on optical disk 100, so the data name is "BB". It is determined that certain data has been updated again after being backed up to the optical disc 100. Therefore, it is determined that data # 0-2 needs to be backed up to the optical disc 100.
- data having the same data name “DD” as data # 0-4 recorded on hard disk 455 is not recorded on optical disc 100. Therefore, data # 0-4 is newly created after the data is backed up to the optical disc 100. It is judged that there is. Therefore, it is determined that data # 0-4 needs to be backed up to the optical disc 100.
- the differential management mode that defines the verification mode when verifying the presence / absence of the differential during the backup operation is selected (step S102).
- the defect management mode is selected based on the characteristics of the data acquired in step S101. More specifically, taking into account the time required for knocking up and the importance of the data to be backed up, improving the reliability of data recording and reading, while making a quick backup Appropriate differential management mode is selected so that
- ANSI MMC defines three types of differential management modes: Complete Mode, Real-Time Mode (Red-time Mode), and Off Mode!
- the complete mode is a differential management mode for verifying the presence / absence of a differential in all recording areas (specifically, sectors) in which data is recorded after the data is recorded. That is, according to the complete mode, both the data recorded based on the recording command of the disk drive 300 and the data recorded based on the recording command of the file system operating on the system control unit 452 of the back end 400 are used. It is verified whether or not there is a differential in the entire recording area. In the complete mode, before recording data, the existence of a diffet is verified in advance in the recording area where the data is to be recorded. Therefore, if the differential management in the complete mode is executed, there is an advantage that the reliability of data recording and reading is greatly improved. On the other hand, the time required for verifying the presence or absence of the differential (and hence the data) This also has the disadvantage that the time required to back up the data significantly increases.
- the real-time mode is a differential management mode for selectively verifying the presence / absence of a differential in a recording area where control information such as file system information is recorded. Specifically, the ability to verify whether or not there is a diffet in the recording area where control information necessary for recording and playback of various contents is recorded. Recorded entity information (such as real-time content data) of various contents. The presence or absence of diffetats in the recording area is not verified. In particular, since control information and the like are read before recording, a recording area in which the control information and the like are recorded is used, and the presence or absence of a differential can be verified using the result of the reading. Therefore, if differential management is performed in real-time mode, the reliability of recording and reading of control information can be improved, and the time required for verifying the presence or absence of differentials compared with complete mode (and The time required for data knock-up) can be shortened.
- the off mode is a differential management mode in which the presence / absence of a differential is not verified. Therefore, if differential management is performed in the off mode, the reliability of data recording and reading will not be improved, but there will be inconveniences, but on the other hand, compared to the complete mode etc. This has the advantage of greatly reducing the time required for recording.
- step S103 the data is actually backed up to the optical disc 100.
- newly updated or created data among the data recorded on the hard disk 455 is selectively backed up to the optical disc 100.
- Step S104 it is determined whether or not to verify the existence of a differential. This determination is made based on the differential management mode selected in step S102. For example, if the complete mode and the real time mode are selected for the data being backed up (or the data portion), it is determined that the presence / absence of the differential is to be verified and the other is backed up. If the off mode is selected for the data (or data portion), it is determined that the existence of the differential is not verified.
- step S104 determines that the existence of the differential is to be verified (step S104: Yes)
- the existence of the differential is actually verified (step S105), and if necessary,
- the differential management information 120 is created and the differential management is performed.
- the presence / absence of the differential is verified in a manner based on the differential management mode selected in step S102.
- the complete mode is selected, the presence or absence of a differential is verified in all the recording areas where the data is backed up.
- the real time mode is selected, the backed up data is checked. The presence or absence of a defect in the recording area where control information is backed up is selectively verified. Thereafter, the process proceeds to step S106.
- FIG. 7 is a data structure diagram conceptually showing a specific example of the differential management information 120. As shown in FIG. 7, the differential management information 120 records a differential area address and a spare area address.
- the differential area address indicates the address of the differential area (ie, area 104a in FIG. 6).
- the spare area address indicates the address of the spare area 105 in which data to be backed up or to be backed up is recorded.
- a spare area 105 may be provided in the data recording area 104 as shown in FIGS. 6A and 6B, for example, or may be provided in the lead-out area 106 (or the lead-in area 102). It may be provided inside.
- a unit including one differential area address and one spare area address is called an entry.
- the entry described at the top of the differential management information 120 shown in FIG. 7 is that the address of the area 104a where the differential occurred is “AA AAh”, and the data power that was backed up or should be backed up there It is recorded in the spare area 105 of the address “EFFOh”.
- the entry described next is recorded in the spare area 105 where the address of the area where the differential occurred is “BBBBh” and the data force address “FFFOh” which was backed up or backed up there is recorded. Show me! /
- step S104 determines whether or not the backup operation is to be terminated ( Step S106). That is, it is determined whether or not the force has been reached for the backup operation for all data to be knocked up.
- step S 106: Yes if it is determined that the knock-up operation is to be terminated (step S 106: Yes), the backup operation is terminated, and the optical disc 100 is ejected from the disc drive 300 as necessary.
- step S106: No when it is determined not to end the knock-up operation (step S106: No), that is, for example, when it is determined to back up other data, for example, the process returns to step S101 and the above-described operation is repeated.
- FIG. 8 to FIG. 11 are explanatory diagrams conceptually showing more specific operation examples when performing the backup operation.
- business data for example, relatively important data
- private data for example, relatively less important data
- the complete mode is selected for the business data and the off mode or the real-time mode is selected for the private data in step S102 of FIG.
- the differential management mode is Selected.
- the complete mode is selected for the entire data as the time required to back up the entire data. Compared to the case, it can be greatly shortened. Further, as shown in FIG. 9, it is assumed that data # 1 having a data size of 10 GB and data # 2 having a data size of 50 MB are recorded on the hard disk 455. When backing up these data, in step S102 of FIG. 4, the off mode or real time mode is selected for data # 1, and the complete mode or real time mode is selected for data # 2.
- the differential management mode is selected in consideration of whether the data size is relatively large or small as the characteristic of the data to be knocked up. For example, the off mode is selected for data whose data size is larger than a certain first threshold (for example, 5 GB), and smaller than the second threshold (for example, 700 MB) that is smaller than the first threshold and whose data size is smaller.
- the real time mode is selected for data with a large data size
- the complete mode is selected for data with a data size smaller than the second threshold.
- the differential management mode is selected in consideration of the time required to back up each data. For example, a differential management mode is selected in which the existence of a differential can be verified so that the time required for backup does not exceed a predetermined time (for example, 1 hour).
- the differential management mode can be suitably selected even if the purpose of use of the data as described above and the data type described later cannot be recognized.
- the time required to back up the data should be averaged (for example, approximately 30 minutes for CDs, for example, approximately 1 to 2 hours for DVDs, for example, BD (For example, the backup mode can be backed up in about 3 hours.)
- the differential management mode may be selected.
- An example of the data size and the time required for backup is shown below. For example, when backing up data to CD-RW (10x speed recording), which is a specific example of the optical disc 100, if differential management is not executed (that is, if differential management in off mode is executed), it is approximately 650MB. The time required to back up data with a data size of approximately 10 minutes is approximately 10 minutes.
- the time required to knock up data with a data size of approximately 650 MB is approximately 60 minutes.
- the time required for backup when complete management in complete mode is executed is approximately six times the time required for backup when differential management is not executed.
- the differential management when data is knocked up to DVD-RW (4 ⁇ speed recording), which is a specific example of the optical disc 100, if the differential management is not executed (that is, if the differential management in the off mode is executed) )
- the time required to back up data with a data size of 4.2 GB is approximately 30 minutes.
- the time required to back up data with a data size of approximately 4.2 GB is approximately 240 minutes.
- the time required for backup when complete management is executed in complete mode is approximately eight times the time required for knock-up when differential management is not executed.
- the differential management when backing up data to BD-RW (single speed recording), which is a specific example of the optical disc 100, if the differential management is not executed (ie, the off-mode differential management is executed). For example, the time required to back up data with a data size of approximately 27 GB is approximately 90 minutes. On the other hand, if differential management is performed in complete mode, the time required to back up data with a data size of approximately 27 GB is approximately 600 minutes. In other words, the time required for backup when the differential management in the complete mode is executed is approximately seven times the time required for the backup when the differential management is not executed.
- the recording / reproducing apparatus 200 in which a suitable differential management mode is selected according to the time required for knocking up (that is, the data size of data to be knocked up) is This has the great advantage of being able to improve convenience.
- document data for example, text data or word processing data
- image data for example, JPEG data, bitmap data, etc.
- moving image data for example, text data, for example
- MPEG data, WMV data, etc. are recorded.
- the complete mode is selected for the document data
- the real-time mode is selected for the image data
- the video data is selected.
- the off mode is selected. That is, the differential management mode is selected in consideration of the data type (file type) as the characteristics of the data to be backed up. Alternatively, as a characteristic of data to be knocked up, the differential management mode is selected in consideration of the data extension.
- the complete mode is initially selected in step S102 of FIG. 4, and a part of the data is backed up to the optical disc 100. If it is determined that the time required to back up the entire data of 1 OGB after the block data # 1, which is a part of the data, is backed up, exceeds the predetermined value, the differential management mode is set. The off mode is newly selected, and block data # 2, which is another part of data, may be backed up. Alternatively, it may be configured to back up some data while performing differential management in the complete mode, and then back up some other data while performing the differential management in the off mode. In other words, while backing up the same data, configure the differential management mode dynamically to continue the backup operation.
- the data backup operation it is possible to appropriately switch the default management mode according to the mode of the backup operation or the like. Therefore, the reliability of data recording and reading can be increased correspondingly, the time required for backing up the data can be shortened, and the data can be backed up more efficiently or preferably. It becomes.
- knock-up is performed.
- the knock-up operation can be performed while appropriately or dynamically switching the aspect of the differential management according to the characteristics of the data to be recorded. Therefore, it is possible to relatively shorten the time required to back up data while improving the reliability of data recording and reading. For this reason, it is possible to realize an environment in which the user can easily perform backup.
- the hardware differential management in which the above-mentioned differential management is executed by the operation of the disk drive 300 may be used, or the back end 400 (mainly, It may be software differential management in which the above-mentioned differential management is executed by the operation of a program executed on the system control unit 452).
- the recording medium is not limited to the hard disk and the optical disk, and any recording medium can be used.
- the present invention is not limited to the three differential management modes described above, and other differential management modes may be selected. Further, for example, a desired differential management mode may be selected by the user himself / herself by an instruction from the user using the instruction button 463 or the like. Also, the user may set a desired differential management mode by himself and select the set differential management mode.
- FIG. 12 is a data structure diagram conceptually showing the mode storage information 110 used in the modified operation example of the recording / reproducing apparatus 200.
- FIG. 13 shows a mode in which the designation information 111 is recorded on the optical disc 100. It is explanatory drawing.
- the mode storage information 110a indicating the association between the data type and the differential management mode may be created. For example, according to the mode storage information 110a shown in FIG. 12 (a), if the data type is text data, the complete mode is selected, and if the data type is image data, the real-time mode is selected, and the data type is moving image data. If so, it indicates that the off mode is selected.
- the mode storage information 110b indicating the correspondence between the data size and the differential management mode may be created.
- Figure 12 (b) According to the mode storage information 110b shown below, the complete mode is selected if the data size S is 100 MB or less, the real-time mode is selected if the data size S is greater than 100 MB and less than 1 GB, and the data size S is 1 GB or more. Indicates that the off mode is selected.
- the mode storage information 110a and 110b may be recorded on the optical disc 100, or may be configured to be recorded on a memory included in the recording / reproducing apparatus 200.
- the mode storage information 110a and 110b may be created in advance, or may be created in real time with reference to the differential management mode selected in the actual backup operation. Also good. Then, when selecting the differential management mode in step S102 of FIG. 4, the differential management mode can be selected relatively easily by referring to the mode storage information 110a and 110b.
- the recording / reproducing apparatus 200 refers to the designation information 111. This makes it possible to select the above-mentioned differential management mode relatively easily. For example, if a certain optical disk 100 is used exclusively for backup of business data, designation information 111 is recorded which designates that the complete mode is selected as the differential management mode.
- the optical disc 100 and the node disc 455 as an example of a recording medium, and the force described with respect to the recorder according to the optical disc 100 and the node disc 455 as an example of a recording device.
- the recording disk and other recording media compatible with high-density recording or high transfer rate, as well as the recording / recording device, are not limited to the recording device, and can be applied to the player.
- the recording apparatus and method and the computer program according to the present invention include, for example, a DVD. It can be used for a recording device such as a recorder. Further, the present invention can also be used for a recording device or the like that is mounted on or connectable to various computer equipment for consumer use or business use.
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- Engineering & Computer Science (AREA)
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- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/663,282 US20070291607A1 (en) | 2004-09-21 | 2005-09-21 | Recording Device and Method, and Computer Program |
| JP2006536385A JP4398468B2 (ja) | 2004-09-21 | 2005-09-21 | 記録装置及び方法、並びにコンピュータプログラム |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-273107 | 2004-09-21 | ||
| JP2004273107 | 2004-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006033340A1 true WO2006033340A1 (ja) | 2006-03-30 |
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ID=36090098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/017355 Ceased WO2006033340A1 (ja) | 2004-09-21 | 2005-09-21 | 記録装置及び方法、並びにコンピュータプログラム |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20070291607A1 (ja) |
| JP (1) | JP4398468B2 (ja) |
| WO (1) | WO2006033340A1 (ja) |
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| US10942816B1 (en) * | 2018-09-06 | 2021-03-09 | NortonLifeLock Inc. | Systems and methods for dynamically adjusting a backup policy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08153366A (ja) * | 1994-11-29 | 1996-06-11 | Mitsubishi Electric Corp | 情報記録再生装置 |
| JPH10172236A (ja) * | 1996-12-13 | 1998-06-26 | Hitachi Ltd | ディジタル情報記録/再生装置 |
| JPH11144381A (ja) * | 1997-11-13 | 1999-05-28 | Toshiba Corp | データ記録再生装置、同装置に用いられる記録媒体、コンピュータシステム及びデータ再生方法 |
| JPH11232791A (ja) * | 1998-02-10 | 1999-08-27 | Sony Corp | 情報記録方法及び装置 |
| JP2000057713A (ja) * | 1998-08-05 | 2000-02-25 | Mitsubishi Electric Corp | 光ディスクの欠陥管理方法、光ディスク装置、及び、光ディスク |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6278807B1 (en) * | 1997-11-13 | 2001-08-21 | Kabushiki Kaisha Toshiba | Data recording/reproducing apparatus, data recording/reproducing method applied to the apparatus, and computer program product used in data processing apparatus |
| KR100429179B1 (ko) * | 1998-07-01 | 2004-06-16 | 엘지전자 주식회사 | 광기록매체의결함영역관리장치및그방법 |
| JP3838115B2 (ja) * | 2002-02-08 | 2006-10-25 | 株式会社日立製作所 | ディスク装置及び管理情報の読み取り制御方法 |
| TWI247281B (en) * | 2004-03-31 | 2006-01-11 | Mediatek Inc | Method of determining defect detection mode for optical storage device |
-
2005
- 2005-09-21 JP JP2006536385A patent/JP4398468B2/ja not_active Expired - Fee Related
- 2005-09-21 US US11/663,282 patent/US20070291607A1/en not_active Abandoned
- 2005-09-21 WO PCT/JP2005/017355 patent/WO2006033340A1/ja not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08153366A (ja) * | 1994-11-29 | 1996-06-11 | Mitsubishi Electric Corp | 情報記録再生装置 |
| JPH10172236A (ja) * | 1996-12-13 | 1998-06-26 | Hitachi Ltd | ディジタル情報記録/再生装置 |
| JPH11144381A (ja) * | 1997-11-13 | 1999-05-28 | Toshiba Corp | データ記録再生装置、同装置に用いられる記録媒体、コンピュータシステム及びデータ再生方法 |
| JPH11232791A (ja) * | 1998-02-10 | 1999-08-27 | Sony Corp | 情報記録方法及び装置 |
| JP2000057713A (ja) * | 1998-08-05 | 2000-02-25 | Mitsubishi Electric Corp | 光ディスクの欠陥管理方法、光ディスク装置、及び、光ディスク |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070291607A1 (en) | 2007-12-20 |
| JP4398468B2 (ja) | 2010-01-13 |
| JPWO2006033340A1 (ja) | 2008-07-31 |
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