KR20110061789A - Apparatus and method for overwriting data in optical disc drive - Google Patents

Apparatus and method for overwriting data in optical disc drive Download PDF

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Publication number
KR20110061789A
KR20110061789A KR1020090118299A KR20090118299A KR20110061789A KR 20110061789 A KR20110061789 A KR 20110061789A KR 1020090118299 A KR1020090118299 A KR 1020090118299A KR 20090118299 A KR20090118299 A KR 20090118299A KR 20110061789 A KR20110061789 A KR 20110061789A
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KR
South Korea
Prior art keywords
data
drive
optical disc
recording
recorded
Prior art date
Application number
KR1020090118299A
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Korean (ko)
Inventor
유형철
Original Assignee
주식회사 히타치엘지 데이터 스토리지 코리아
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Priority to KR1020090118299A priority Critical patent/KR20110061789A/en
Publication of KR20110061789A publication Critical patent/KR20110061789A/en

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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
    • G11B19/122—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 an identification or authentication mark
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0055—Erasing
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/006—Overwriting
    • 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
    • G11B2220/2566—DVDs belonging to the minus family, i.e. -R, -RW, -VR
    • 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
    • G11B2220/257—DVDs belonging to the plus family, i.e. +R, +RW, +VR

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: A data overwrite apparatus and method in an optical disk drive are provided to efficiently prevent the increase of a data recording time due to the deletion operation of previous data. CONSTITUTION: A data overwrite apparatus overwrites new data on a re-writable optical disk. The apparatus searches drive identification information included in navigation information. The apparatus selectively performs the deletion operation of the previous data recorded in the re-writable optical disk. The apparatus overwrites new data after the deletion operation.

Description

Apparatus and method for overwriting data in optical disc drive}

The present invention relates to various types of optical disc drives for recording or reproducing data on an optical disc such as, for example, a CD, a DVD, a BD, and the like.

In general, various types of optical disc drives (ODDs) for recording or reproducing data on optical discs such as CDs, DVDs, and BDs are widely used.

On the other hand, when any one optical disk is inserted into the optical disk drive, a spindle servo operation and a sled servo operation may be performed to rotate the optical disk at a predetermined speed and to inner the inner disk of the optical disk. The optical pickup is moved to the area.

In addition, the optical disk drive performs a focus servo operation and a tracking servo operation, and determines the type of the optical disk. For example, the type of the optical disk may include a rewritable DVD ( For example, in the case of DVD + RW and DVD-RW, the data recording operation is performed after performing an optical power calibration (OPC) operation.

When the data recording operation is completed, corresponding navigation information is generated and recorded in a specific area of the rewritable DVD, for example, a lead-in area.

Also, in the optical disk drive, when overwriting new data on the rewritable DVD, a data erasure (eg, DC Erase) operation for deleting all previously recorded data is performed, and then new data is deleted. Will be recorded.

However, if the new data is recorded after the previous data deletion operation is performed as described above, the data recording operation takes a long time. If the previous data deletion operation is omitted, the new data is overwritten. If so, the data recording quality may be degraded.

For example, each of the optical disk drives has different characteristics. If the data recorded by the optical disk drive A is not deleted, the optical disk drives have characteristics such as optical power adjustment and recording speed, and the like. When the new data is overwritten by these different optical disc drives B, there is a problem that the recording quality of the new data is deteriorated.

According to the present invention, even if new data is superimposed on a rewritable optical disc by using optical disc drives having different characteristics such as optical power adjustment and recording speed, the data recording quality can be maintained and the old data can be maintained. It is an object of the present invention to provide a data superimposition recording apparatus and method in an optical disk drive for efficiently reducing the time required for a long time data recording operation due to the erase operation.

The data superimposition recording method in an optical disc drive according to the present invention comprises: a step 1 of retrieving drive identification information included in navigation information when new data is superimposed on a rewritable optical disc; And selectively performing an erase operation of the previous data recorded on the rewritable optical disc based on the drive identification information, and then overwriting the new data.

In addition, the first step, when the new data is overlaid on the DVD + RW rewritable DVD, characterized in that the drive ID (Drive ID) included in the FDCB (Formatting Disc Control Block) navigation information, characterized in that,

In addition, in the first step, when new data is overlaid on a rewritable DVD, the drive manufacture ID included in the navigation management data (RMD) may be retrieved. ,

Further, in the second step, if the drive identification information matches the identification information of the optical disc drive on which the new data is to be overlaid, the new data is superimposed without omitting the deletion of the old data recorded on the rewritable optical disc. Characterized by recording,

Further, in the second step, if the drive identification information does not match the identification information of the optical disc drive on which the new data is to be overwritten, the new data is deleted after performing the operation of deleting the old data recorded on the rewritable optical disc. Characterized in that the superimposed recording,

In addition, the deleting operation of the previous data may be performed on all of the previous data recorded on the rewritable optical disc or only some data recorded by another optical disc drive, depending on the amount of new data to be overwritten. Characterized in that performed selectively,

Further, a data superimposition recording apparatus in an optical disc drive according to the present invention comprises: recording means for recording data on a rewritable optical disc; And control means for selectively erasing new data after selectively deleting the previous data based on the drive identification information included in the navigation information of the rewritable optical disc, and

The control means may search for a drive ID included in the FDCB (Formatting Disc Control Block), which is navigation information, when new data is overlaid on a DVD + RW which is a rewritable DVD.

The control means may search for a drive manufacturer ID included in recording management data (RMD), which is navigation information, when new data is overlaid on a DVD-RW which is a rewritable DVD. ,

Further, if the drive identification information coincides with the identification information of the optical disc drive on which new data is to be overwritten and recorded, the control means skips the previous data recorded on the rewritable optical disc. By controlling the operation, the new data is superimposed and recorded,

If the drive identification information does not match the identification information of the optical disc drive on which new data is to be overwritten, the control means controls the recording means to delete the old data recorded on the rewritable optical disc. After the operation, characterized in that to overwrite the new data,

In addition, the deleting operation of the previous data may be performed on all of the previous data recorded on the rewritable optical disc or only some data recorded by another optical disc drive, depending on the amount of new data to be overwritten. It is characterized in that it is performed selectively.

In the data superimposition recording apparatus and method in the optical disc drive according to the present invention, for example, when superimposing and recording new data on a rewritable optical disc, the drive identification information included in the navigation information is retrieved, If the data matches the identification information of the optical disc drive to overwrite the new data, the new data is overwritten while the delete operation of the old data is omitted. If the data does not match, the new data is overwritten and the new data is overlaid. By recording, even if new data is overlaid using optical disk drives having different characteristics such as optical power adjustment and recording speed, data recording quality can be maintained, and data recording operation can be performed due to the erasing operation of previous data. Efficiently reduce the time spent Will be.

Best Modes for Carrying Out the Invention Preferred embodiments of a data superimposition recording apparatus and method in an optical disc drive according to the present invention will be described in detail with reference to the accompanying drawings.

1 shows a configuration of an embodiment of an optical disk drive to which the present invention is applied. For example, the optical disk drive includes an optical disk 10, an optical pickup 11, a sled motor 12, and a spindle motor. 13, the motor driver 14, the reproduction / recording unit 15, the codec 16, the digital signal processing unit 17, the microcomputer 18, the memory 19, and the like.

On the other hand, in the microcomputer 18, for example, when any one optical disk 10 is inserted into the drive, the motor driver 14 is operated to control the spindle motor 13 and the sled motor ( 12) will be rotated.

Accordingly, the optical disk 10 is rotated at a predetermined speed by the spindle motor 13, and the optical pickup 11 is the inner circumference of the optical disk 10 by the sled motor 12. ) Area, for example, a lead-in area.

In addition, the microcomputer 18 operates the playback / recording unit 15 to determine the type of the optical disk, and then performs a data recording operation according to a user's request. For example, FIG. As shown in the figure, when the optical disc 10 is DVD + RW which is a rewritable DVD, data is recorded in the first session in Session 1 in the first section of the data area.

In addition, navigation information for the first session (Session 1) is generated and recorded in a lead-in area. In the navigation information, as illustrated in FIG. 3, an FDCB ( Formatting Disc Control Block) information is recorded, and the FDCB information includes a Drive ID which is unique identification information of the optical disc drive in which the data is recorded.

On the other hand, in the microcomputer 18, for example, as shown in Fig. 4, when the optical disc 10 is a DVD-RW which is a rewritable DVD, a first section in the data area (Data Area) is provided. After recording data in Session 1, navigation information for the first Session 1 is generated and recorded in a lead-in area, and the navigation information is shown in FIG. As shown in the figure, RMD (Record Management Data) information is included and recorded.

The RMD information includes a drive manufacture ID, which is unique identification information of the optical disc drive in which the data is recorded. In the microcomputer 18, when the optical disc is a DVD-RW, the RMD information is recorded. The drive manufacturer ID included in the search may be searched to find out which optical disk drive (eg, Drive A) the data of the session has been recorded.

In addition, when the optical disc is a DVD + RW, the drive ID included in the FDCB information is searched to find out which optical disc drive (eg, Drive A) is recorded in the session data. Will be.

When the microcomputer 18 overwrites the new data on the rewritable DVD, the microcomputer 18 searches for drive identification information included in the navigation information, and the retrieved drive identification information is assigned to the drive. If the identification information is matched, new data is overlaid while omitting the deleting operation of the old data recorded on the rewritable DVD.

On the other hand, in the microcomputer 18, if the retrieved drive identification information does not match the drive identification information assigned to the microcomputer 18, after deleting the old data recorded on the rewritable DVD, the new data is superimposed. This is described in detail as follows.

6 to 9 illustrate embodiments of a method of superimposing data in an optical disc drive according to the present invention. In particular, FIGS. 6 to 9 illustrate specific embodiments of a DVD + RW which is a rewritable DVD.

For example, as shown in FIG. 6, when the data recording operation of the first session Session 1 is performed while the DVD + RW is inserted in the drive A to which the present invention is applied, A value corresponding to Drive A is recorded in the Drive ID of the FDCB 1 information recorded as navigation information in the lead-in LI area of the DVD + RW.

Subsequently, when the data writing operation of the second session (Session 2) is performed while the DVD + RW is inserted into the drive B, the navigation is performed in the lead-in area LI of the DVD + RW. A value corresponding to Drive B is recorded in the Drive ID of the FDCB 2 information recorded as the information.

On the other hand, as shown in FIG. 7, the DVD + RW in which the first session (Session 1) is recorded by the drive A is superimposed with new data in the first session (Session 1) while the DVD + RW is inserted into the drive B. FIG. In the case of overwriting, the microcomputer of the drive B includes a drive ID (eg, Drive A) of FDCB 1 information recorded in the lead-in area of the DVD + RW, and a unique drive ID (eg, assigned to itself). Drive B) is compared.

If it is determined that Drive A, which is the drive ID of the FDCB information, and Drive B, which is the unique drive ID assigned to the FDCB information, do not coincide with each other, the microcomputer operates a playback / recording unit to control the data of the first session. After deleting all data (eg, DC Erase), the new data is overwritten.

In addition, in the microcomputer, after recording a new first session (Session 1 ') by overlapping recording of the new data, as shown in FIG. 7, the previously recorded FDCB 1 information is replaced with the new FDCB 1' information. In this case, a value corresponding to Drive B is recorded in the drive ID in the FDCB 1 'information.

That is, in the optical disc drive to which the present invention is applied, when new data is overlaid on DVD + RW, the drive ID recorded in the FDCB information is searched for, and if the drive IDs do not coincide with each other, the old data is deleted. By superimposing new data, it is possible to prevent the data recording quality from deteriorating.

On the other hand, if the drive IDs coincide with each other, the new data is overwritten without deleting the old data, thereby efficiently reducing the time required for the data writing operation.

On the other hand, as shown in Fig. 8, in the state where the data of the first session recorded in the DVD + RW is recorded by the drive A, and the data of the second session is recorded by the drive B, for example, the drive When new data is superimposed on the first session and the second session of the DVD + RW using A, in the microcomputer of the drive A, the FDCB 1 information and the FDCB 2 recorded in the lead-in area of the DVD + RW are recorded. The drive IDs of the information (eg Drive A, Drive B) will be retrieved respectively.

If at least one of the retrieved drive IDs does not match the drive ID assigned to the drive A, as shown in FIG. 8, in the microcomputer of the drive A, a playback / recording unit may be used. By performing an operation control, a data erase (eg, DC Erase) operation of selecting and deleting only data of the second session recorded by the drive B is performed, and then new data is overlaid in the first session and the second session.

In addition, in the microcomputer, after recording a new first session (Session 1 ') by overlapping recording of the new data, as shown in FIG. 8, previously recorded FDCB 1 information and FDCB 2 information are newly recorded. In this case, a value corresponding to Drive A is recorded as the drive ID in the FDCB 1 'information.

On the other hand, in the microcomputer, if at least one of the searched drive IDs does not match the unique drive ID (Drive A) assigned to the drive A, the playback / recording unit is controlled to operate, the first session and the second After deleting all the data of the session, new data may be overwritten in the first session and the second session.

In the microcomputer of the drive A, for example, as shown in FIG. 9, the data of the first session is recorded by the drive A, and the data of the second session is recorded by the drive B. FIG. In the case where new data is overwritten, the amount of new data to be overwritten is confirmed in advance.

In addition, in the microcomputer of the drive A, if the amount of data to be newly overwritten and recorded is less than the amount of data of the first session, as a result of the confirmation, only the partial section of the first session is omitted while omitting the previous data deletion operation. The new data is overwritten, and at this time, the FDCB 1 information is deleted and the value corresponding to Drive A is recorded as the drive ID in the FDCB 1 'information corresponding to the new first session (Session 1').

Accordingly, even if new data is overlaid using optical disc drives having different characteristics such as optical power adjustment and recording speed, data recording quality can be maintained, and the data recording operation is performed due to the deletion operation of the previous data. It is possible to efficiently reduce the time required for a long time.

For reference, as described above, the embodiments described with reference to FIGS. 6 to 9 correspond to DVD + RW. In the case of DVD-RW, RMD information is used instead of FDCB information, and Drive Manufacture ID is used instead of Drive ID. Since the same procedure as described above is applied to the present invention, the embodiment of the DVD-RW will be omitted.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. , Alteration, substitution, addition, or the like.

1 shows a configuration of an embodiment of an optical disk drive to which the present invention is applied;

2 and 3 illustrate an embodiment in which a drive ID is recorded in an FDCB recorded as navigation information of a DVD + RW according to the present invention.

4 and 5 illustrate an embodiment in which a drive manufacture ID is recorded in an RMD recorded as navigation information of a DVD-RW according to the present invention;

6 to 9 show embodiments of a data superimposition recording method in the optical disk drive according to the present invention.

[Description of Drawings]

10: optical disc 11: optical pickup

12: sled motor 13: spindle motor

14: motor driver 15: play / record

16 codec 17 digital signal processing unit

18: Micom 19: Memory

Claims (12)

In the case of superimposing and recording new data on the rewritable optical disc, step 1 of retrieving drive identification information included in the navigation information; And Based on the drive identification information, selectively performing an operation of deleting old data recorded on the rewritable optical disk, and then superimposing and recording new data. Recording method. The method of claim 1, In the first step, when new data is overlaid on DVD + RW, which is a rewritable DVD, the drive ID included in the FDCB (Formatting Disc Control Block), which is navigation information, is searched for. How to record data nesting The method of claim 1, In the first step, when the new data is overlaid on a DVD-RW rewritable DVD, the drive manufacturer ID included in the navigation management data (RMD) is searched for. How to record data overlap in. The method of claim 1, In the second step, if the drive identification information matches the identification information of the optical disc drive on which the new data is to be overwritten, the new data is overwritten by omitting the deleting operation of the previous data recorded on the rewritable optical disc. A data superimposition recording method in an optical disc drive, characterized in that. The method of claim 1, In the second step, if the drive identification information does not match with the identification information of the optical disc drive on which the new data is to be overwritten, the data is overwritten after the operation of deleting the old data recorded on the rewritable optical disc. A data superimposition recording method in an optical disc drive, characterized by the above-mentioned. The method of claim 5, The erasing operation of the previous data is selectively performed only on some of the data previously recorded on the rewritable optical disk or by some data recorded by another optical disk drive according to the amount of new data to be overwritten. The data superimposition recording method in the optical disc drive, characterized in that performed as. Recording means for recording data on a rewritable optical disc; And And control means for selectively performing an erase operation of the previous data based on the drive identification information included in the navigation information of the rewritable optical disc, and then overwriting the new data. Data overlay recording device. The method of claim 7, wherein In the optical disc drive, the control means searches for a drive ID included in the FDCB (Formatting Disc Control Block), which is navigation information, when new data is overlaid on a DVD + RW which is a rewritable DVD. Data overlay recording device. The method of claim 7, wherein The control means, when superimposing and recording new data on a DVD-RW which is a rewritable DVD, searches for a drive manufacture ID included in the navigation management data (RMD), which is navigation information. Data superimposition recorder in. The method of claim 7, wherein If the drive identification information matches the identification information of the optical disc drive on which new data is to be overwritten and recorded, the control means controls the recording means while omitting an operation of deleting previous data recorded on the rewritable optical disc. And superimposing and recording new data. The method of claim 7, wherein If the drive identification information does not coincide with the identification information of the optical disc drive on which new data is to be overwritten and recorded, the control means controls the recording means to perform an operation of deleting old data recorded on the rewritable optical disc. And superimposing and recording new data thereon. The method of claim 11, The erasing operation of the previous data is selectively performed only on some of the data previously recorded on the rewritable optical disk or by some data recorded by another optical disk drive according to the amount of new data to be overwritten. And a data superimposition recording apparatus in the optical disc drive.
KR1020090118299A 2009-12-02 2009-12-02 Apparatus and method for overwriting data in optical disc drive KR20110061789A (en)

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KR1020090118299A KR20110061789A (en) 2009-12-02 2009-12-02 Apparatus and method for overwriting data in optical disc drive

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