KR20090061148A - Method and apparatus for managing optical disc - Google Patents
Method and apparatus for managing optical disc Download PDFInfo
- Publication number
- KR20090061148A KR20090061148A KR1020070128029A KR20070128029A KR20090061148A KR 20090061148 A KR20090061148 A KR 20090061148A KR 1020070128029 A KR1020070128029 A KR 1020070128029A KR 20070128029 A KR20070128029 A KR 20070128029A KR 20090061148 A KR20090061148 A KR 20090061148A
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- KR
- South Korea
- Prior art keywords
- area
- recording
- data
- recorded
- information
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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
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
- G11B19/128—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of track pitch or recording density
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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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/0079—Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas
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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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1285—Status of the record carrier, e.g. space bit maps, flags indicating a formatting status or a write permission
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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
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
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- Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
Abstract
Description
The present invention relates to an optical disk management method and apparatus.
Recently, optical discs capable of recording high-definition video data and high-quality audio data, such as write-once DVDs (such as DVD-R or DVD + R) and disc devices capable of recording / reproducing them, have become widespread. It is becoming.
A recordable optical disc device, such as a DVD-Recorder, records all data in a data area of an optical disc, and then records management information related to the recorded data in a management area such as a lead-in
However, if an unexpected event occurs during recording of data in the data area of the disk, for example, if a power failure occurs, the recording cannot be terminated normally, the management information related to the previously recorded data is not recorded on the disk. The problem arises that you cannot reuse the remaining space.
Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a method of using the remaining space of an optical disk for which recording is not normally terminated due to a power failure or the like.
SUMMARY OF THE INVENTION The present invention has been created to achieve the above object, and a disk management method according to an embodiment of the present invention includes: a first step of recording information on an area reserved for data recording in a management area of a disk; And a second step of recording data in the reserved area.
The embodiment further includes a third step of updating the information on the area in which data is recorded and recording the information in the management area when data recording is completed.
In the above embodiment, a second area for directly recording data and a first area for recording information related to data recorded in the second area may be reserved, and in the first step, start addresses of the first area and the second area. Is recorded in the management area, and in the third step, an end address of the second area may be recorded in the management area, and in
In the above embodiment, when data recording is completed, dummy data may be recorded in the remaining space of the second area after information related to data recorded in the second area is recorded in the first area.
In the above embodiment, when data is first recorded on the disc, a third area for recording file system information about all data to be recorded on the disc is reserved in front of the first area and the information on the reserved third area. Can be recorded in the management area.
According to another aspect of the present invention, there is provided a disc management method, the method comprising: checking management information on titles recorded on a disc from a disc management area: and whether recording of the disc is normally completed based on the checked management information. Characterized in that it comprises a step of determining whether or not.
In the above embodiment, if the end address of the area in which the last title was recorded is not recorded in the management information for the last title, it is determined that the recording of the last title has not been normally terminated. The information on the information is completed and recorded in the management area.
In the above embodiment, the management information for each title includes information indicating a start address and an end address of a second area in which data of the title is recorded, information indicating whether or not the second area ends, and data recorded in the second area. It may include a start address and / or an end address of a first area in which related information is recorded and information indicating whether the first area is terminated.
In the above embodiment, when it is determined that it has not been normally terminated, the last position of the second area in which the data of the last title is recorded is retrieved, the dummy data is recorded in the first area for the last title, and the last title Information indicating that the first and second areas of the second area and the second area of the second area and the second area may be recorded.
Disc management apparatus according to another embodiment of the present invention, the recording / reproducing unit for recording data on the disc or read data from the disc to reproduce; And a control unit for controlling the recording / reproducing system, wherein the control unit checks management information on the area in which each title recorded on the disc is recorded from the management area of the disc and based on the checked management information. It is characterized by determining whether or not recording of the last title is normally completed.
Disc management apparatus according to another embodiment of the present invention, the recording / reproducing unit for recording data on the disc or read data from the disc to reproduce; And a control unit for controlling the recording / reproducing system, wherein the control unit reserves a second area for recording the data requested to be recorded and a first area for recording information related to data recorded in the second area. Record information about the first area and the second area in a management area of the disc, record data in the second area, and update information about the first area and the second area when data recording is completed; It is characterized by.
In the above embodiments, the disc is a DVD-R, and the management area is a recording management area provided in the inner circumference more than the lead-in area.
Therefore, the remaining space of the disk on which recording is not normally terminated can be used again.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
First, data recording on an optical disc that can be written once, for example, a DVD-R, will be described. You can finish recording to a disc with a single data write to a disc that can be written to once (DAO: Disc at once), or you can write data multiple times (multi-session). You can leave it open for the next record without finalization. Each data recorded until recording starts and stops on a recordable disc is called a title or session.
Fig. 1 shows the structure of a DVD-R, which is a recordable optical disc on which a plurality of titles are recorded.
When a title is first recorded in the data area of a DVD-R disc, a predetermined size, for example, R-
When the first title is recorded in the data area of the DVD-R disc, the R-zone # of a predetermined size after the allocated R-
Then, the navigation information associated with the first title recorded, for example, the Start Address (and / or End Address) of R-
When a command to close R-
Similarly, when the second title is recorded, an R-zone # 4 104 of a predetermined size is assigned after the R-
An apparatus for recording data on a DVD-R disc records, for example, the nth title (Title #n) while recording a title, and thus R-zone # (2n) 106 and R-zone # ( While allocating 2n + 1) 107 to record data in R-zone # (2n + 1) 107, R-zone # (2n) 106 and R-zone # (2n + 1) ( 107) manages the start address in memory, and also stores information (NWA: Next Writable Address) indicating the next recording location in R-zone # (2n) 106 and R-zone # (2n + 1) 107. The NWA for the R-zone # (2n + 1) 107 is continued while recording data of the title (Title #n) in the R-zone # (2n + 1) 107. Update while increasing.
Thereafter, the recording apparatus, when terminating the R-zone # (2n) 106 or the R-zone # (2n + 1) 107, manages the R-zone # (2n) 106 managed in the memory or Write the start address (and / or end address) of R-zone # (2n + 1) 107 to the RMA 109, and also the R-zone # (2n) 106 or R-zone # ( Change the NWA of R-zone # (2n) 106 or R-zone # (2n + 1) 107 to 0 (or start address) to indicate the end of 2n + 1) 107; Write to RMA 109. The address and NWA information are recorded for each R-zone.
Next, the process of recording data on the DVD-R disc will be briefly described.
When a data recording request to the DVD-R disc is input, the recording apparatus performs an OPC operation for calculating the optimal recording power, reserves R-
When the data recording of the
However, an unexpected event during the recording of user data for Title # 1 (or Title #n) to R-
Therefore, when the recording apparatus recognizes the disc again after recovery from power failure, it becomes impossible to obtain navigation information related to the title from which recording has been stopped from the
That is, when recording data on a DVD-R disc, the recording apparatus first checks the
Thus, in the present invention, when recording data on a disc, the recording order is reversed so that the information related to the area in which the data is to be recorded, for example, the start address (and / or R-zone (area reserved for recording corresponding data)). End address) can be recorded first in the management area, and then data can be recorded. That is, management information that is determined when recording is requested, such as the start address (and / or end address) of R-
In addition, in the present invention, when there is a request for data recording, first, it is checked whether the management information of the disc contains uncompleted management information, and as a result of the verification, no management information is recorded in the management area or all the management information is completed. If the recording is done in a normal state, a normal recording operation is performed. On the other hand, if the verification finds incomplete management information, it searches for the last location where data was recorded (the location where recording was stopped for the last title) from after the address recorded in the management information and manages the last title for which recording failed. After completing the information and recording it in the management area, recording of the requested title is performed.
The present invention can be applied to various types of optical disk devices capable of recording, such as DVD recorders.
2 illustrates a configuration of a disk device to which the present invention is applied. The
3 is a flowchart illustrating an operation of a disk management method according to an exemplary embodiment of the present invention. The operation flow of FIG. 3 will be described with reference to FIG. 2.
If the
At this time, the
Thereafter, the
When the recording of the
4 is a flowchart illustrating an operation of a disk management method according to another embodiment of the present invention. The operation flow of FIG. 4 will be described with reference to FIG. 2.
The
The
Accordingly, the
When the last data recording position is found, the
Thereafter, the
Therefore, the remaining space of the disk on which recording is not normally terminated can be used again. However, because the file system of the last title is abnormally terminated without being created, the data of the last title cannot be recovered or reproduced.
The above-described preferred embodiments of the present invention are disclosed for purposes of illustration, and those skilled in the art can improve, change, and substitute various other embodiments within the technical spirit and scope of the present invention disclosed in the appended claims below. Or addition may be possible.
1 shows the structure of a DVD-R, which is a recordable optical disc on which a plurality of titles are recorded,
2 shows a configuration of an optical disk device to which the present invention is applied;
3 is a flowchart illustrating an operation of a disk management method according to an embodiment of the present invention;
4 is a flowchart illustrating an operation of a disk management method according to another embodiment of the present invention.
※ Explanation of code for main part of drawing
100: optical disk 100: disk device
210: optical pickup 220: servo unit
230: signal processor 240: memory
250: control unit
Claims (25)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070128029A KR20090061148A (en) | 2007-12-11 | 2007-12-11 | Method and apparatus for managing optical disc |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070128029A KR20090061148A (en) | 2007-12-11 | 2007-12-11 | Method and apparatus for managing optical disc |
Publications (1)
Publication Number | Publication Date |
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KR20090061148A true KR20090061148A (en) | 2009-06-16 |
Family
ID=40990679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020070128029A KR20090061148A (en) | 2007-12-11 | 2007-12-11 | Method and apparatus for managing optical disc |
Country Status (1)
Country | Link |
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KR (1) | KR20090061148A (en) |
-
2007
- 2007-12-11 KR KR1020070128029A patent/KR20090061148A/en not_active Application Discontinuation
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