WO2006033342A1 - 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
- Publication number
- WO2006033342A1 WO2006033342A1 PCT/JP2005/017357 JP2005017357W WO2006033342A1 WO 2006033342 A1 WO2006033342 A1 WO 2006033342A1 JP 2005017357 W JP2005017357 W JP 2005017357W WO 2006033342 A1 WO2006033342 A1 WO 2006033342A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- recording
- data
- recorded
- real
- time
- Prior art date
Links
Classifications
-
- 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
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
-
- 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
-
- 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
-
- 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.
- the recorded data is verified by executing a verification process (verification process).
- a verification process verification process
- the reading reliability can be improved. Specifically, for example, whether or not the data is correctly recorded, whether or not the data can be read (or reproduced) correctly, the reproduction quality of the recorded data (eg, reproduction error Based on the rate value, etc., the verify process is executed.
- Such verification processing is executed based on the following two methods.
- data is recorded in a recording area specified by a write command output from the host to the disk drive, and the recording area in which the data is recorded is verified. This operation is repeated over the entire recording medium (or the entire recording area in which data is to be recorded).
- Another method is to record data on the entire recording medium (or the entire recording area in which data is to be recorded) and then the entire recording medium (or the entire recording area in which the data is recorded). Verify.
- a verification process generally requires time.
- the time required for the verification process increases with the recording capacity of the recording medium.
- a recording medium having a single recording layer among the Blu-ray Discs currently being developed has a recording capacity of 23 GB. If data is recorded while executing verification processing on this recording medium, it takes about 1 hour for data recording and about 1 hour for verification processing. That is, data is recorded on one recording medium For this reason, it takes about 2 hours, and there is a problem that it lacks practicality.
- the present invention has been made in view of, for example, the above-described conventional problems.
- a recording apparatus capable of relatively shortening the data recording time while ensuring suitable recording of data, for example.
- the recording apparatus of the present invention includes recorded data including real-time data in which a predetermined amount is continuously recorded and management data for managing at least one of recording and reproduction of the real-time data.
- real-time data and management data are recorded on the recording medium by the operation of the recording means.
- Real-time data is recording data that requires a certain amount to be physically recorded on a recording medium. In other words, it is recorded data in which a certain amount is not physically continuously recorded, and if it is not recorded, its proper reproduction cannot be guaranteed.
- the management data is recording data for managing at least one of recording and reproduction of real-time data.
- the management data is read to realize a suitable recording operation and reproducing operation.
- the recorded data recorded by the operation of the recording means is verified (verified) by the operation of the verification means whether the recorded data is recorded correctly (or without any particular inconvenience).
- the verification unit is controlled by the operation of the first control unit so as to verify whether or not the management data of the recording data is correctly recorded. Therefore, the recording data It is selectively verified whether or not at least the management data is correctly recorded without verifying whether or not the entire data is correctly recorded. For this reason, the time required for the verification operation can be shortened as compared with the case where it is verified whether or not the entire recording data is correctly recorded! Thereby, the time required for the recording operation of the recording data can be shortened.
- the recording apparatus of the present invention it is possible to reduce the time required for recording the recording data while ensuring a suitable recording of the recording data.
- One aspect of the recording apparatus of the present invention controls the verification means so as to selectively verify whether or not a part of the real-time data is correctly recorded in the recorded data.
- Second control means for further comprising:
- the verification unit is controlled by the operation of the second control unit so as to verify whether or not a part of the recording data is correctly recorded. That is, it is selectively verified whether or not a part of the real-time data is correctly recorded without verifying whether or not the entire real-time data is correctly recorded.
- the verification operation is not performed on the recording area other than the recording area where the partial real-time data is recorded. That is, the recording area is skipped. For this reason, the time required for the verification operation can be shortened as compared with the case where it is verified whether or not the entire recording data is correctly recorded. Thereby, the time required for the recording operation of the recording data can be shortened.
- the second control unit correctly determines a data portion to be distributed for each predetermined size as the partial real-time data.
- the verification means is controlled so as to verify whether or not it has been recorded.
- management data is recorded in a recording area to which a recording area having a data size corresponding to a predetermined size is skipped, both the management data and real-time data are stored in the skipped recording area. Is considered to be recorded. In this case, since it is necessary to verify whether or not the management data is correctly recorded, it is preferable to return to the skip source recording area and perform the force verification operation again. At this time, after returning to the skip recording area, a recording area having a data size smaller than a predetermined size, which is the size of the recording area to be initially skipped, may be skipped. With this configuration, the time required for the verification operation can be considerably shortened.
- the second control means uses the real-time data as the predetermined size continuously.
- the recording means is controlled so as to verify whether or not the data portion distributed for each data recording unit, which is a unit to be recorded, is recorded correctly.
- the verification operation is executed while skipping only the recording area corresponding to the data recording unit of real-time data. And the record corresponding to the data recording unit. Since the verification operation is executed while skipping only the recording area, for example, if all the real-time data is recorded on the recording medium in the size of the data recording unit, the entire real-time data can be skipped. Therefore, it is not necessary to perform a real-time data verification operation, and the time required for the verification operation can be further shortened.
- the recording apparatus further includes an adjusting unit for adjusting the predetermined size.
- the size of the recording area to be skipped can be changed (adjusted) as appropriate. If importance is placed on shortening the time required to record the recording data, the size of the skipped recording area is adjusted to be relatively large, while the emphasis is on improving the reliability of recording and reading recording data. If so, the size of the skipped recording area can be adjusted to be relatively small. For this reason, it is possible to realize a suitable verification operation according to the situation at that time.
- the recording unit records the real-time data with a real time flag
- the first control unit refers to the real-time flag
- the verification means is controlled to selectively verify the management data.
- the recording medium in particular, the verification target of the recording medium
- the recording medium since the real-time flag is recorded on the recording medium in a format added to the real-time data, it is possible to recognize whether the recorded data is real-time data or management data relatively easily and quickly. Become.
- the recording means includes position information indicating a recording position of the real-time data on the recording medium (or distribution of the real-time data on the recording medium).
- the first control unit controls the verification unit so as to selectively verify the management data by referring to the position information.
- the location information recorded in the file system information described later is recorded.
- the information it is recorded on the recording medium (especially, the recording area of the recording medium that is the target of the verification operation), and it is recognized whether the recorded data is real-time data or management data. be able to.
- the recording medium especially, the recording area of the recording medium that is the target of the verification operation
- it is sufficient to refer to a single position information it is not necessary to refer to the position information sequentially every time the recording data is verified. Therefore, it becomes relatively easy to recognize whether the recorded data is real-time data or management data.
- Another aspect of the recording apparatus of the present invention is position information indicating a recording position of the real-time data on the recording medium (or distribution information indicating a distribution state of the real-time data on the recording medium).
- the first control unit controls the verification unit to selectively verify the management data by referring to the position information.
- the recording data recorded on the recording medium is real-time data. It can be recognized whether it is management data. In particular, since it is sufficient to refer to a single position information, it is not necessary to refer to the position information sequentially every time the recording data is verified. Therefore, it is possible to recognize whether the recorded data is real-time data or management data relatively easily.
- the recording method of the present invention provides recording data including real-time data in which a predetermined amount is continuously recorded and management data for managing at least one of recording and reproduction of the real-time data.
- a recording step for recording the recorded data on the recording medium a verification step for verifying whether or not the recorded recording data is correctly recorded, and whether or not the management data is correctly recorded among the recorded recording data.
- the recording method of the present invention can also adopt various aspects.
- the computer program of the present invention is a computer program for recording control for controlling a computer provided in the above-described recording apparatus of the present invention (including various forms thereof).
- a computer is caused to function as at least a part of the recording means, the verification means, and the first control means.
- the computer program of the present invention is read from a recording medium such as a ROM, CD-ROM, DVD-ROM, hard disk or the like storing the computer program and executed by the computer, or 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.
- a recording medium such as a ROM, CD-ROM, DVD-ROM, hard disk or the like storing the computer program and executed by the computer, or 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 recording unit, the verification unit, and the first control unit.
- 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 which is a transmission wave
- the computer program product includes the recording unit, the verification unit, and the first unit of the present invention described above.
- It may be composed of a computer readable code (or computer readable instruction) that functions as at least a part of the control means.
- the recording means and the verification means As described above, according to the recording apparatus or method of the present invention, the recording means and the verification means. And a first control means, or a recording process, a verification process, and a first control process. Therefore, it is possible to relatively shorten the recording time of the recording data while ensuring a suitable recording of the recording data.
- 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 flowchart conceptually showing a flow of the entire recording operation of the recording / reproducing apparatus in the example.
- FIG. 3 is a data structure diagram conceptually showing a mode in which a real-time attribute is directly assigned to each sector as a recording unit of recording data.
- FIG. 4 is a data structure diagram conceptually showing a mode in which real-time attributes given to recording data on an optical disc are recorded in file system information.
- FIG. 5 is a table conceptually showing an aspect of recording a correspondence relationship between real-time attributes assigned to recording data on an optical disc and address positions on the optical disc as a table.
- FIG. 6 is an explanatory diagram conceptually showing a mode of a verify process performed by the recording / reproducing apparatus in the example.
- FIG. 7 is an explanatory diagram schematically showing one mode of a verify process operation performed by a recording / reproducing apparatus according to a comparative example.
- FIG. 8 is an explanatory diagram schematically showing another aspect of the verify processing operation executed by the recording / reproducing apparatus in the comparative example.
- FIG. 9 is an explanatory diagram conceptually showing an aspect of a verify process to be reverse skipped.
- FIG. 1 is a block diagram conceptually showing the basic structure of the recording / reproducing apparatus 200 in the example.
- the recording / reproducing apparatus 200 has a function of recording data (file) on the optical disk 100 and a function of reproducing data (file) recorded on the optical disc 100.
- the recording / reproducing apparatus 200 includes a disk drive 300 in which the optical disk 100 is actually loaded and recording data is recorded and recorded data is reproduced, and recording data is recorded on the disk drive 300. And a back end 400 for controlling playback.
- the back 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, a signal recording / reproducing means 353, a CPU (drive control means) 354, a memory 355, a data input / output control means 306, and a bus 357.
- the spindle motor 351 includes a spindle motor 351, an optical pickup 352, a signal recording / reproducing means 353, a CPU (drive control means) 354, a memory 355, a data input / output control means 306, and a bus 357.
- the back end 400 includes a CPU 359, a memory 360, an operation Z display control unit 307, an operation button 310, a display panel 311, and a data input / output control unit 308.
- the spindle motor 351 rotates and stops the optical disc 100.
- the optical disc 10 Operates when 0 is accessed. More specifically, the spindle motor 351 is configured to rotate and stop the optical disc 100 at a predetermined speed while receiving spindle servo from a servo unit (not shown) or the like.
- the optical pickup 352 constitutes one specific example of the “recording means” of the present invention, and, for example, a semiconductor laser device and a lens isotropic force are also configured to perform recording / reproduction on the optical disk 100. More specifically, the optical pickup 352 irradiates the optical disc 100 with the laser beam LB at the first power as the reading light at the time of reproduction, and at the time of recording with the second power as the writing light while being modulated. .
- the signal recording / reproducing means 353 records / reproduces recording data on / from the optical disc 100 by controlling the spindle motor 351 and the optical pickup 352. More specifically, the signal recording / reproducing means 353 includes, for example, a laser diode driver (LD driver), a head amplifier, and the like.
- the laser diode driver drives a semiconductor laser (not shown) provided in the optical pickup 352.
- the head amplifier amplifies the output signal of the optical pickup 352, that is, the reflected light of the laser beam LB, and outputs the amplified signal.
- the signal recording / reproducing means 353 performs optimum laser power by OPC pattern recording and reproduction processing together with a timing generator (not shown) under the control of the CPU 354 during OPC (Optimum Power Calibration) processing.
- the semiconductor laser (not shown) provided in the optical pick-up 352 is driven so that the determination can be made.
- the memory 355 is a general area for data processing in the disk drive 300, such as a buffer area for recording data to be recorded and reproduced, an area used as an intermediate buffer when converting to data usable by the signal recording / reproducing means 353, etc. Used in.
- the memory 355 stores a program for operating as a recorder device, that is, a ROM area in which firmware is stored, a buffer for temporarily storing recording / playback data, and variables necessary for operation such as a firmware program.
- the power of the RAM area is configured.
- a CPU (drive control means) 354 is connected to the signal recording / reproducing means 353 and the memory 355 via the bus 357, and controls the entire disk drive 300 by giving instructions to various control means. Normally, the software or firmware for operating the CPU 354 is stored in the memory 355!
- the data input / output control means 306 controls external data input / output to / from the disk drive 300 and stores and retrieves data in / from the data buffer on the memory 355.
- Drive control commands issued from an external knock end 400 connected to the disk drive 300 via an interface such as SCSI or ATAPI are transmitted to the CPU 354 via the data input / output control means 306.
- recording / reproduction data is exchanged with the back end 400 via the data input / output control means 306.
- the operation Z display control means 307 is for receiving and displaying an operation instruction for the back end 400. For example, an instruction by the operation button 310 such as recording or reproduction is transmitted to the CPU 359. Based on the instruction information from the operation Z display control means 307, the CPU 359 transmits a control command (command) to the disk drive 300 via the data input / output means 308 to control the entire disk drive 300. Similarly, the CPU 359 can transmit a command requesting the disk drive 300 to transmit the operation state to the host. As a result, since the operation state of the disk drive 300 such as recording or playback can be grasped, the CPU 359 displays the operation state of the disk drive 300 on the display panel 31 1 such as a fluorescent tube or LCD via the operation / display control means 307. Can be output.
- the memory 360 is an internal storage device used by the back end 400.
- a ROM area in which a firmware program such as BIOS (Basic Input / Output System) is stored, a general-purpose operating system (or a general-purpose operating system) File system) and RAM area where variables necessary for the operation of application programs are stored.
- BIOS Basic Input / Output System
- BIOS Basic Input / Output System
- general-purpose operating system or a general-purpose operating system
- RAM where variables necessary for the operation of application programs are stored.
- the hard disk 361 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 back end 400, or various data such as image data and moving image data can be recorded.
- a specific example of the recording / reproducing apparatus 200 described above is a configuration in which the disk drive 300 and a back end 400 such as a personal computer are used in combination.
- the back end 400 such as a personal computer and the disk drive 300 are connected via data input / output control means 306 and 308 such as SCSI and ATA PI, and various applications such as a lighting application installed in the knock 400 are used.
- data input / output control means 306 and 308 such as SCSI and ATA PI
- various applications such as a lighting application installed in the knock 400 are used.
- general-purpose operating system (file system) 1S Controls the disk drive 300.
- Another specific example is the configuration of household equipment such as recorder equipment that records and reproduces video.
- the recording / reproducing apparatus 200 having this configuration is a device that records the video signal from the external connection terminal on the broadcast receiving tuner on the optical disc 100 and outputs the video signal reproduced from the optical disc 100 to an external display device such as a television.
- the program stored in the memory 360 is executed by the CPU 359 to operate as a recorder device.
- FIG. 2 is a flowchart conceptually showing a flow of the entire recording operation of the recording / reproducing apparatus 200 in the example.
- the optical disc 100 on which recording data is to be recorded is loaded onto the recording / reproducing apparatus 200 (particularly, the disc drive 300) (step S101).
- a write strategy that defines the waveform of the laser beam LB when recording data is acquired, or an OPC (Optimum for calculating the optimum power of the laser beam LB when recording data is recorded. (Power Control) processing may be executed.
- the recording data is actually recorded (step S102).
- the recording data real-time data 121 for which a certain amount of data needs to be continuously recorded, and management data 122 for managing at least one of recording and reproduction of the real-time data 121 are described.
- the real-time data 121 is recorded data that cannot be read / reproduced with suitable recorded data unless a certain amount of data is physically continuously recorded on the optical disc 100.
- moving image data such as MPEG (Moving Picture Experts Group) and WMV (Windows Media Video)
- music data such as MP3 (MPEG Audio3) can be cited as an example of real-time data 121.
- the management data 122 is data for managing the recording and reproduction of these moving image data and music data.
- the recorded data is recorded with a real time attribute indicating whether the recorded data is real time data 121 or not (step S103).
- This real-time attribute may be given directly to the recording data as a real-time flag described later, for example.
- this real-time attribute is used for recognizing the distribution state of the real-time data 121 and the management data 122 on the optical disc 100, information indicating the distribution state is recorded, so that the real-time attribute is recorded. May be recorded indirectly.
- This real-time attribute assignment will be described in more detail with reference to FIGS.
- FIG. 3 is a data structure diagram conceptually showing a mode in which a real-time attribute is directly assigned to each sector as a recording unit of recording data
- FIG. 4 shows recording data on the optical disc 100.
- FIG. 5 is a data structure diagram conceptually showing a mode of recording real-time attributes assigned to file system information 1 12, and FIG. 5 shows real-time attributes given to recording data on optical disc 100 and address positions on optical disc 100. Is a table conceptually showing a mode in which the correspondence relationship is recorded as a table 113.
- a real-time attribute may be directly assigned to each sector, which is a unit in which recording data is recorded.
- the data size of one sector is 2KB.
- a real-time flag 111 is recorded for each sector as a real-time attribute. That is, in the sector in which the real time data 121 is recorded, for example, a flag “1” is recorded as the real time flag 111. On the other hand, for example, a flag “0” is recorded as the real time flag 111 in the sector in which the management data 122 is recorded.
- Such a real-time flag 111 is standardized in DVD-RAM, Blu-ray Disc-R, and the like, which are specific examples of the optical disc 100. Of course, the same configuration can be adopted for other specific optical discs 100! / Needless to say! /. Further, as described later, a real-time attribute that does not use the real-time flag 111 may be added.
- the real-time attribute assigned to the recording data recorded on the optical disc 100 may be recorded.
- information indicating the distribution states of the real-time data 121 and the management data 122 on the optical disc 100 may be recorded. That is, the real time attribute of the recording data may be recorded by the table 113 indicating the correspondence between the data type of the recording data on the optical disc 100 and the address position on the optical disc 100.
- the management data 122 is recorded in the recording area from the address position “000A” to “00EF”, and the address position is from “00F0” to “3009”.
- the table 113 shown in FIG. 5 is not recorded in the file system information 112, but may be recorded in other recording areas on the optical disc 100 (for example, other recording areas in the user data area or lead-in). Area or lead-out area), or may be recorded on the memory 360 (or the memory 355) of the recording / reproducing apparatus 200 !.
- step S104 it is then determined whether or not to perform the verification process of the recorded data under the control of the CPU 359 (or CPU 354). Specifically, in order to improve the reliability of recording and reading of recorded data, it is determined that the verification process is performed. On the other hand, the recording data is more improved than the reliability of recording and reading of recorded data. When it is important to shorten the time required for the data recording operation, it is determined that the verify process is not performed.
- the verify process in the present embodiment means a process for verifying whether or not the record data has been suitably recorded.
- Such verify processing is executed by the operation of the signal recording / reproducing means 353 and the CPU 354 (or CPU 359) which constitute one specific example of the “verifying means” in the present invention.
- the recorded recording data By reading or reproducing the data, the reproduction quality of the recorded data such as a reproduction error rate and a jitter value (or modulation degree, asymmetry, etc.) is measured. If the reproduction quality is poor with respect to the reference value determined by the standard of the optical disc 100, it is determined that the recorded data is not recorded favorably, and the recorded data is recorded again as necessary.
- This series of processing power S corresponds to the verification processing in this embodiment.
- step S104 If the result of determination in step S104 is that verify processing is not to be performed (step S104: No), then the recorded data is controlled under the control of CPU359 (or CPU354). It is determined whether or not the force is sufficient to end the recording operation (step S109). For example, when the entire recording data to be recorded has already been recorded in the current recording operation, or the user of the recording / reproducing apparatus 200 instructs to end (or pause) the recording operation. For example, when the operation button 310 is pressed, it is determined that the recording operation is finished.
- step S109: No If it is determined that the recording operation is not terminated as a result of the determination in step S109 (step S109: No), the process returns to step S102 again to continue the recording operation. On the other hand, if it is determined in step S109 that the recording operation is to be terminated (step S109: Yes), the recording operation is terminated and finalization processing is performed as necessary, or the optical disc 100 is recorded and reproduced. You may eject from 200 (specifically, disk drive 300).
- step S104 determines whether or not the verification process is to be performed as a result of the determination in step S104 (step S104: Yes). It is determined whether or not the recording data recorded in the recording area (in particular, the recording area where the verification process is about to be executed) is the real-time data 121 (step S105). Specifically, by referring to the real-time attribute assigned in step S103 (see FIGS. 3 to 5), the recording data recorded in the recording area to be verified is the real-time data 121. It is determined whether or not there is.
- real-time attributes such as the real-time flag 111 are not necessarily recorded on the optical disc 100. Even if it is not recorded, it may be configured to determine the presence or absence of real-time attributes using the data processing process during the recording operation.
- the recording area to be verified is specified by a command output from the knock end 400 (specifically, the CPU 359) to the disk drive 300. Specifically, the recording area where the recording data is recorded is designated as the recording area to be verified.
- step S105 If it is determined in step S105 that the recording data recorded in the recording area to be verified is not real-time data 121 (that is, management data 122) (step 105) S105: No), the verification eye processing of the management data 122 is executed under the control of the CPU 359 (or CPU 354) constituting one specific example of the “first control means” in the present invention (step S107). That is, if the recording data recorded in the recording area to be verified is not the real-time data 121 but the management data 122, the verification process is executed on the entire management data 122. Thereafter, the process proceeds to step S108.
- step S105 determines whether the recording data recorded in the recording area to be verified is real-time data 121 (step S105: Yes)
- the verify process is executed in the previous recording area skipped by a predetermined size (step S 106).
- a predetermined size a verification process is executed in a recording area that skips a recording area corresponding to a data size of 1 MB, or, for example, 10 recording tracks are set as the predetermined size.
- the verify process is executed in the recording area to which the recording area corresponding to is skipped.
- the verify process is not executed in the skipped recording area (specifically, the recording area having the data size of 1 MB or the recording area corresponding to 10 recording tracks).
- the recording data recorded in the recording area subject to the verification process is real-time data 121
- a part of the real-time data 121 that is not subjected to the verification process for the entire real-time data 121 is used.
- the verify process is executed selectively. Thereafter, it is determined whether or not to end the verify process under the control of the CPU 359 (or CPU 354) (step S108).
- the verification process has already been completed for the entire recording area that is the target of the verification process specified by the command output from the back end 400 to the disk drive 300, or the user of the recording / playback apparatus 200
- an instruction to end (or temporarily stop) the verification process is given, for example, by the operation button 310, it is determined that the verification process is to be ended.
- step S108 If it is determined in step S108 that the verify process is not to be ended (step S108: No), the process returns to step S105 again, and the above-described verify process is continued. On the other hand, as a result of the determination in step S108, if it is determined to end the verify process (step S108: Yes), the verify process is ended and the process proceeds to step S109.
- FIG. 6 is an explanatory diagram conceptually showing an aspect of the verify processing operation executed by the recording / reproducing apparatus 200 according to the present embodiment.
- the shaded portion of the recording area on the optical disc 100 is a recording area to be verified (hereinafter referred to as “verification target area” as appropriate).
- the recording data recorded in the verification target recording area is recognized as real time data 121 or management data 122 by the real time flag 111 (RT flag) described with reference to FIG.
- RT flag real time flag
- the verify process is executed with reference to the real time flag 111 (real time attribute). Specifically, in the recording area in which the real-time flag 111 is “0” (that is, the recording area in which the management data 122 is recorded), the verify process is executed over the entire area. That is, as shown by the arrow in (3) in FIG. The objective lens of the backup 352 moves.
- the recording area in which the real-time flag 111 is “1” that is, the recording area in which the real-time flag 111 is recorded
- the recording area skipped by a predetermined size has a fixed time (or a fixed size). Only the verify process is executed. That is, the objective lens of the optical pickup 352 moves as indicated by arrows indicated by (4) and (5) in FIG.
- the real-time flag 111 is referred to even if the recording area is skipped at this time, it is determined whether or not the real-time data 121 is recorded in the recording area, and skipping of a predetermined size is repeated. This skipping of the predetermined size is repeated until the recording area force management data 122 is recorded as the target of the verification process. That is, as shown in FIG. 6, skipping of a predetermined size is repeated until the real time flag 111 of the skipped recording area becomes “0”.
- FIG. 7 and FIG. 8 are explanatory diagrams conceptually showing the mode of the verify process performed by the recording / reproducing apparatus according to the comparative example.
- a trace and recording data for recording the recording data are recorded at a certain size (for example, every sector). Search the beginning of the recorded area (ie, search for verification), verify the recorded data, and then search for the beginning of the recording area where the recorded data should be recorded (ie newly recorded A search to start) is performed.
- the time required for recording the recording data on the optical disc is (the time required for tracing for recording the recording data of a certain size + the recording data Time required to search for the beginning of the recorded recording area, time required to verify the recording data of a certain size, and time required to search for the beginning of the recording area where recording data should be recorded next)
- X n (Time required for tracing for recording data on the entire optical disk + Time required for verifying the entire optical disk) + Time required for search X 2n. That is, the time required for tracing the entire optical disk X 2 + the time required for the short distance search (relatively close !, search for the recording area located in the range) X 2 n is required.
- the trace for recording the recording data on the entire optical disk is the trace for recording the recording data on the entire optical disk + the time required for the verify process for the entire optical disk + the time required for the search. That is, the time required for tracing the entire optical disc X 2 + the time required for searching the entire recording area is required.
- the time required for recording the recording data on the entire optical disc 100 is compared with the comparison example of FIGS. 7 and 8. Can be shortened. That is, in the comparative example of FIGS. 7 and 8, the time required for the verify process is equivalent to the time required for tracing the entire optical disk, but in this embodiment, the time required for the verify process is skipped.
- the time required to trace the area can be reduced. For example, the time required to trace the recording area to be skipped by one skip operation (that is, the time required to verify the recording area to be skipped by one skip operation) is 30 seconds.
- the real-time data 121 is the substance of the content recorded on the optical disc 100, the data size is larger than the data size of the management data 122. This Therefore, by skipping the real-time data 121 having a relatively large data size and performing verification processing intermittently or selectively, the trace time required for verification processing can be compared with the time required for tracing the entire optical disc. It can be shortened more effectively and significantly.
- the real-time data 121 including moving image data and music data has a relatively large data size, an error in a relatively small recording area has a great influence on reading and reproduction. There is nothing. For example, the effect of noise that enters a normal movie for a moment is often sufficient. Therefore, even if the verification process is performed while skipping the real-time data 121, it does not significantly affect the reading and reproduction of the recorded data. For this reason, the verification process is performed over the entire optical disc 100, and the verification process is performed while skipping the real-time data 121, rather than improving the reliability of recording and reading the recorded data. More emphasis can be placed on reducing the time required to record data.
- the verification process for the recording area in which the real-time data 121 is recorded may not be executed at all. In other words, instead of skipping a recording area of a certain size, the real time data 121 may be recorded and the entire recording area may be skipped.
- the standard stipulates that the real-time data 121 having a data size of at least 16 MB is physically continuously recorded on the optical disc 100. Accordingly, in this case, a 16 MB recording area may be skipped as an initial setting.
- the initial setting value may be configured to skip a recording area of 24 MB or 80 MB! /. As a result, the time required for recording the recording data can be further reduced.
- the certain size is appropriately changed under the control of the CPU 359 (or CPU 354) as one specific example of the “adjustment means” of the present invention.
- You may comprise as follows. For example, immediately after recording data recording starts, If the recording area of 50 KB is skipped, but the time required for recording the recording data is further reduced, the 200 KB recording area can be skipped as a fixed size. May be. In other words, if importance is placed on shortening the time required to record the recording data, the size of the recording area to be skipped is adjusted to be relatively large, while improving the reliability of recording and reading of the recording data is emphasized. If so, the size of the recording area to be skipped may be adjusted to be relatively small.
- FIG. 9 is an explanatory diagram conceptually showing a mode of the verify process for reverse skip.
- the recording data recorded in the skipped recording area is not real time data 121.
- the objective lens of the optical pickup 352 is moved so as to return to the recording area before skipping again (reverse skip).
- the verification process is executed again so as to skip the recording area of the predetermined size.
- a recording area having a data size smaller than the data size of the recording area skipped in the first skip operation is skipped. That is, as indicated by the arrow (3) in FIG. 9, for example, a recording area having a data size half that of the recording area skipped in the first skip operation is skipped.
- determination as to whether or not the recording data recorded in the recording area to be skipped is real-time data 121, verification processing, and the like are executed again.
- the verification process is performed in the order of the recording area force before skipping without skipping the recording area of V ⁇ data size smaller than the data size of the skipped recording area. You may comprise so that it may carry out. However, from the viewpoint of focusing on shortening the time required for the verification process (and hence the time required for recording the recording data), a recording area having a data size smaller than the data size of the recording area skipped in the first skip operation is selected. Prefer to be configured to skip again. Further, similarly to the comparative example of FIG. 7, it may be configured to perform recording of the recording data and verification processing of the recording data for every fixed size, or like the comparative example of FIG. After recording the recording data on the entire optical disc 100, a verification process may be performed on the entire optical disc 100. In any recording mode, the time required for recording the recording data can be shortened by executing the selective verify process described above.
- the explanation has been made by taking the real-time data 121 such as moving image data and music data as an example of the recording data for executing the selective verification processing, but this is not restrictive. Needless to say. In particular, if the data does not have a significant effect on the playback of recorded data, the time required to record the recorded data can be reduced by executing selective verification processing in the same way as the real-time data 121. can do.
- the optical disc 100 as an example of the recording medium and the recorder or player related to the optical disc 100 as an example of the recording / reproducing device have been described.
- the present invention is limited to the optical disc and the recorder.
- the present invention can be applied to other high-density recording or various recording media corresponding to a high transfer rate and its recorder.
- the recording apparatus and method and the computer program according to the present invention can be used for a recording apparatus such as a DVD recorder, for example. 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.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/663,277 US8018826B2 (en) | 2004-09-21 | 2005-09-21 | Recording device and method, and computer program |
JP2006536387A JP4280778B2 (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 |
---|---|---|---|
JP2004-273117 | 2004-09-21 | ||
JP2004273117 | 2004-09-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006033342A1 true WO2006033342A1 (ja) | 2006-03-30 |
Family
ID=36090100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/017357 WO2006033342A1 (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) | US8018826B2 (ja) |
JP (1) | JP4280778B2 (ja) |
WO (1) | WO2006033342A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0554452A (ja) * | 1991-08-29 | 1993-03-05 | Canon Inc | 光磁気記録媒体 |
JPH06282944A (ja) * | 1993-03-29 | 1994-10-07 | Fujitsu Ltd | ディスク装置及びデータブロック書込み方法 |
JP2004319079A (ja) * | 2003-04-03 | 2004-11-11 | Sony Corp | 情報処理装置および方法、記録媒体、並びにプログラム |
JP2005160060A (ja) * | 2003-11-06 | 2005-06-16 | Matsushita Electric Ind Co Ltd | データ記録再生制御装置およびデータ記録再生制御方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4114330B2 (ja) * | 2001-06-11 | 2008-07-09 | 株式会社日立製作所 | 光ディスク装置およびそれを用いた情報記憶装置 |
US7414811B2 (en) * | 2005-08-26 | 2008-08-19 | International Business Machines Corporation | Magnetic head having three modules |
US7894161B2 (en) * | 2007-03-01 | 2011-02-22 | International Business Machines Corporation | Tape head assembly having a single beam and multiple modules coupled to the beam |
US8243385B2 (en) * | 2008-04-29 | 2012-08-14 | International Business Machines Corporation | Magnetic head having first, second and third arrays of writers |
-
2005
- 2005-09-21 WO PCT/JP2005/017357 patent/WO2006033342A1/ja active Application Filing
- 2005-09-21 US US11/663,277 patent/US8018826B2/en not_active Expired - Fee Related
- 2005-09-21 JP JP2006536387A patent/JP4280778B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0554452A (ja) * | 1991-08-29 | 1993-03-05 | Canon Inc | 光磁気記録媒体 |
JPH06282944A (ja) * | 1993-03-29 | 1994-10-07 | Fujitsu Ltd | ディスク装置及びデータブロック書込み方法 |
JP2004319079A (ja) * | 2003-04-03 | 2004-11-11 | Sony Corp | 情報処理装置および方法、記録媒体、並びにプログラム |
JP2005160060A (ja) * | 2003-11-06 | 2005-06-16 | Matsushita Electric Ind Co Ltd | データ記録再生制御装置およびデータ記録再生制御方法 |
Also Published As
Publication number | Publication date |
---|---|
US20070263510A1 (en) | 2007-11-15 |
JP4280778B2 (ja) | 2009-06-17 |
JPWO2006033342A1 (ja) | 2008-05-15 |
US8018826B2 (en) | 2011-09-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8526283B2 (en) | Method and apparatus of recording information in reduced waiting time | |
WO2004086373A1 (ja) | 情報記録方法、情報記録装置、情報記録用プログラム及び記憶媒体 | |
WO2006030812A1 (ja) | 情報記録媒体、情報記録装置及び方法、情報再生装置及び方法、コンピュータプログラム | |
JP3292181B2 (ja) | Cd−rwディスクの消去方法およびcd−rw記録装置 | |
WO1997015052A1 (fr) | Appareil et procede pour enregistrer et/ou reproduire des donnees respectivement sur/a partir d'un support d'enregistrement | |
JP4280778B2 (ja) | 記録装置及び方法、並びにコンピュータプログラム | |
KR100793231B1 (ko) | 파이널라이즈 디스크의 재생 제어방법 | |
CN100435219C (zh) | 记录装置和记录方法 | |
JP2003263842A (ja) | 情報記録装置 | |
US7734964B2 (en) | Optical disc recording/reproducing apparatus | |
JP4651680B2 (ja) | 情報再生装置及び方法、並びにコンピュータプログラム | |
WO2006013822A1 (ja) | 情報記録媒体、情報記録装置及び方法、並びにコンピュータプログラム | |
CN100440335C (zh) | 记录装置、记录方法、以及计算机程序 | |
US7545714B2 (en) | Method for controlling data read speed of optical disc | |
JP2001052436A (ja) | 記録装置 | |
CN100552798C (zh) | 减少导入时间的方法、信号优化的方法及记录/再现装置 | |
JP4048371B2 (ja) | 光ディスク記録再生装置 | |
JP2001067805A (ja) | 記録装置 | |
JP2001351326A (ja) | 情報記録装置と情報記録方法と情報記録処理プログラムを記録した記録媒体 | |
JP2006172565A (ja) | 記録方法、情報記録装置、光ディスク装置、プログラム及び記録媒体 | |
JPH05120844A (ja) | 情報記録再生装置 | |
JP2004178715A (ja) | 記録装置 | |
JPH04247326A (ja) | 光学式情報記録装置 | |
JP2004326934A (ja) | 記録装置 | |
US20090148136A1 (en) | Information reproduction apparatus and method, and computer program |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006536387 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11663277 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 11663277 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 05785479 Country of ref document: EP Kind code of ref document: A1 |