KR20090085304A - Apparatus and method for controlling drive track on light scribe disc - Google Patents

Apparatus and method for controlling drive track on light scribe disc Download PDF

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Publication number
KR20090085304A
KR20090085304A KR1020080011120A KR20080011120A KR20090085304A KR 20090085304 A KR20090085304 A KR 20090085304A KR 1020080011120 A KR1020080011120 A KR 1020080011120A KR 20080011120 A KR20080011120 A KR 20080011120A KR 20090085304 A KR20090085304 A KR 20090085304A
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KR
South Korea
Prior art keywords
track drive
offset value
control
drive
track
Prior art date
Application number
KR1020080011120A
Other languages
Korean (ko)
Inventor
손유락
Original Assignee
주식회사 히타치엘지 데이터 스토리지 코리아
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Priority to KR1020080011120A priority Critical patent/KR20090085304A/en
Publication of KR20090085304A publication Critical patent/KR20090085304A/en

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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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0929—Electromechanical actuators for lens positioning for tracking only
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/24094—Indication parts or information parts for identification
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0016—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers adapted to have label information written on the non-data side by the optical head used for data recording, e.g. lightscribe, labelflash
    • 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

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  • Optical Recording Or Reproduction (AREA)

Abstract

An apparatus and a method for controlling drive tracks of a light-scribe disc are provided to perform accurate drive track control by adding an offset value to drive voltage to compensate. A method for controlling drive tracks of a light-scribe disc includes the steps of determining a magnetic track drive offset value based on control feature information of a light-scribe disc, and controlling the magnetic track drive based on the offset value while printing a label image(S17). The magnetic track drive offset value is determined by verifying the type of the light-scribe disc and the current location of a focus lens and searching for the corresponding offset value from track drive offset information stored previously.

Description

Apparatus and method for controlling drive track on light scribe disc}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track drive control apparatus and method for a light scribe disc. For example, a track of a light scribe disc (LSD) capable of printing a label image such as various characters or designs, etc. A drive control apparatus and method are disclosed.

FIG. 1 shows a configuration of a general CD light scribe disk (LSD_CD). The CD light scribe disk includes various characters or patterns in a direction opposite to a record surface on which audio and video data is recorded. A label side is formed on which a label image can be printed.

Meanwhile, the CD light scribe disk is assigned a clamping / logo area, a control feature area, and a label area based on a center hole. In the control feature area, a spoke shaped control feature inner ring and a saw tooth shaped control feature outer ring are recorded as the control feature information. Is used for track drive control and actuator gain control for label printing.

FIG. 2 shows a configuration of a general DVD Light Scribe Disc (DVD), and similarly to the DVD Light Scribe Disc, various characters in the opposite direction to the record surface on which audio and video data are recorded. Alternatively, a label surface capable of printing a label image such as a pattern is formed.

In addition, a clamping / logo area, a control feature area, and a label area are allocated based on the center hole, and the control feature area includes a spoke-shaped control feature inner ring and a tooth ( Saw Teeth shaped control feature outer ring is recorded as control feature information, and the control feature information is used for track drive control and actuator gain adjustment for label printing. .

On the other hand, for example, as shown in FIG. 3, the sawtooth control feature outer ring is scanned to detect a drive voltage for track drive control, if the focus lens position in the optical pickup is at the center. When shifted to the left (Position 1), the movement distance D1 detected by the outer ring becomes longer than the movement distance D2 when the focus lens position is at the center (Position) ( D1> D2).

On the other hand, when the focus lens position in the optical pickup is deviated from the center to the right (Position 3), the movement distance D3 detected by the outer ring is the movement distance when the focus lens position is at the center. Shorter than (D2) (D2> D3).

However, in the general optical disc device, the control is performed without considering that the detected movement distances D1, D2, and D3 differ from each other according to the focus lens positions Position 1,2 and 3 as described above. Since the drive voltage detected by scanning the feature outer ring is applied to the track drive control operation as it is, there is a problem that a fatal error occurs in the label printing operation in the disc peripheral area.

Accordingly, the present invention was created to solve the above problems, for example, by scanning the control feature information of the light scribe disk, to detect the drive voltage for the track drive control, the disk type (type) or focus lens SUMMARY OF THE INVENTION An object of the present invention is to provide a track drive control apparatus and method for a light scribe disk for compensating an offset value corresponding to a position and the like so that accurate track drive control can be performed.

According to another aspect of the present invention, there is provided a track drive control method of a light scribe disk, the method comprising: determining a track drive offset value based on control feature information of a light scribe disk; And controlling the track drive by compensating the offset value while printing the label image.

In addition, the step 1, by scanning the toothed outer ring of the control feature information of the light scribe disk to detect the drive voltage for the track drive control, the type of the light scribe disk and the current focus lens position And searching for and determining the offset value corresponding thereto from the track drive offset information previously stored and managed.

In addition, the track drive offset information, characterized in that the offset value corresponding to the plurality of focus lens positions for each disc type is stored as an experimental result value,

In the second step, the track drive is controlled by adding the driving voltage detected for the track drive control and the offset value retrieved from the track drive offset information while printing the label image.

In addition, a track drive control apparatus for a light scribe disk according to the present invention includes: reading means for reading control feature information of the light scribe disk; Storage means for storing an offset value for track drive control; And control means for controlling the track drive by determining a track drive offset value based on the control feature information of the write scribe disk, and then compensating the offset value when printing a label image.

In addition, the control means, by scanning the sawtooth outer ring of the control feature information of the light scribe disk to detect the drive voltage for the track drive control, the type of the light scribe disk and the current focus lens position To determine the offset value corresponding to the track drive offset information in the storage means,

In addition, the track drive offset information, characterized in that the offset value corresponding to the plurality of focus lens positions for each disc type is stored as an experimental result value,

The control means may control the track drive by adding the drive voltage detected for the track drive control and the offset value retrieved from the track drive offset information while printing the label image.

The track drive control apparatus and method of a light scribe disk according to the present invention, for example, by scanning a sawtooth outer ring of the control feature information of the light scribe disk, to detect the drive voltage for the track drive control, the write Check the type of scribe disk and the current focus lens position, and determine the offset value corresponding thereto by searching the track drive offset information previously stored and managed, and add the determined offset value to the driving voltage to compensate. By doing so, the track drive control operation of the light scribe disk can be performed accurately, and thus it is possible to normally print label images such as various characters or designs.

Best Mode for Carrying Out the Invention Preferred embodiments of a track drive control apparatus and method for a light scribe disk according to the present invention will now be described in detail with reference to the accompanying drawings.

First, an apparatus and method for controlling a track drive according to the present invention may be used independently of an optical disc drive (ODD) used in connection with a host such as a personal computer (PC), or the host. It can be applied to various types of optical disc devices and the like.

On the other hand, in the optical disk drive (ODD) to which the present invention is applied, for example, as shown in FIG. 4, the optical disk 10, the optical pickup 11, the playback / recording unit 12, and the digital signal processing unit 13 are shown. , The interface unit 14, the microcomputer 15, the sled motor 16, the spindle motor 17, the motor driver 18, the optical detection sensor 19, the memory 20, and the buffer 21 are provided. Consist of included.

As the memory 20, a nonvolatile memory such as an EEPROM or a flash memory is used. The memory 20 includes a track drive offset as illustrated in FIG. 5, for example. Information (Track Drive Offset Information) is stored and managed.

In the track drive offset information, a disc type, a focus lens position, a distance, an offset value, and the like are previously performed test result values. Linkage is stored.

For example, as described above with reference to FIG. 3, the focus lens of the optical pickup includes a first focus lens position (Position 1) oriented from the center to the left and a second focus lens position (Position) precisely located at the center. 2) and movement distances detected when scanning the serrated control feature outer ring, respectively, at the third focus lens position (Position 3), which is oriented from the center to the right. And offset values (e.g., Offset =-m, 0, + m) to compensate for the difference in driving voltage generated due to the difference between the moving distances are classified by each disc type (e.g., LSD_CD, LSD_DVD, etc.) Stored.

On the other hand, the microcomputer 15 scans the serrated control feature outer ring of the control feature information of the light scribe disk to detect the drive voltage for the track drive control, but the type of the light scribe disk and the current focus. By determining the lens position, the offset value corresponding to the lens position is searched and determined from the track drive offset information in the memory 20.

Then, the determined offset value is added to the detected driving voltage by scanning the control feature outer ring, and then the track drive control operation is performed at the driving voltage of the summation result, on the label side of the write scribe disk. Alternatively, a series of label printing operations for printing various label images, such as a design, may be performed, which will be described in detail below.

FIG. 6 is a flowchart illustrating a method for controlling a track drive of a light scribe disk according to the present invention. In the microcomputer 15, when the optical disk 10 is inserted into the device, the optical drive 10 is connected to the optical detection sensor 19. FIG. Determining a typical disc type for determining whether the optical disc 10 is a CD light scribe disk (LSD_CD) or a DVD light scribe disk (LSD_DVD) with reference to control feature information detected by the control feature. The operation is performed (S10).

The microcomputer 15 operates and controls the optical pickup 11 and the motor driver 18 to retrieve control feature information of the optical disc 10 (S11). Of the information, the serrated control feature outer ring is scanned to detect the drive voltage for track drive control.

For example, when the distance detected by scanning the control feature outer ring is long, a driving voltage applied to move the focus lens by one track is detected to be relatively small, and when the distance is short, the focus lens is moved. The driving voltage applied to move one track is detected relatively large.

On the other hand, the microcomputer 15 checks the focus lens position when the driving voltage is detected, that is, the current focus lens position when the optical pickup scans the control feature outer ring (S13). Among the track drive offset information stored and managed at 20), a type (Type) of the optical disc 10 and any one offset value corresponding to the current focus lens position are retrieved (S14).

For example, the type of the optical disk is a CD-lite scribe disk (LSD_CD), and the identified current focus lens position is a first focus lens position (Position 1-1) oriented from the center to the left. In this case, the offset value (-m) recorded in the track drive offset information is retrieved.

On the other hand, when the position of the checked current focus lens is the second focus lens position (Position 1-2) accurately positioned at the center, an offset value (0) is searched for, and the position of the checked current focus lens is determined. When the position is the third focus lens position (Position 1-3) which is deviated from the center to the left, the offset value (+ m) is searched for.

On the other hand, when the type of the optical disk is a DVD light scribe disk (LSD_DVD) and the checked current focus lens position is a first focus lens position (Position 2-1) which is biased from the center to the left, the track drive The offset value (-n) recorded in the offset information is retrieved.

In addition, when the checked current focus lens position is the second focus lens position (Position 2-2) accurately positioned at the center, the offset value (0) is searched for, and the position of the checked current focus lens is determined. When the third focus lens position (Position 2-3) is shifted from the center to the left, the offset value (+ n) is searched for.

On the other hand, in the microcomputer 15, the offset value retrieved as described above is added to the detected driving voltage by scanning the control feature outer ring to compensate for the offset of the driving voltage for track drive control (S15).

Subsequently, when label printing is started (S16), in the microcomputer 15, a drive voltage compensated for the offset is applied to the optical pickup while the focus servo operation is turned on. The track drive control operation for moving by one track unit is performed correctly (S17).

In addition, the microcomputer 15 operates and controls the reproduction / recording unit 12 and the digital signal processing unit 13 to print various label images such as characters or drawings on the label side of the optical disc. S18), due to an error in the track drive control operation, it is possible to prevent the label image from being recorded incorrectly in the disc peripheral area.

Or more, preferred embodiments of the present invention described above, for the purpose of illustration, those skilled in the art, within the technical spirit and the technical scope of the present invention disclosed in the appended claims below, to further improve various other embodiments Changes, substitutions or additions will be possible.

1 shows a configuration of a typical CD light scribe disk,

2 shows a configuration of a general DVD light scribe disk,

3 illustrates an embodiment of scanning a general control feature outer ring,

4 illustrates an embodiment in which an optical disc drive and a host are connected and connected to the present invention.

5 illustrates an embodiment of track drive offset information stored and managed according to the present invention;

6 is a flowchart illustrating an operation of a track drive control method of a light scribe disk according to the present invention.

※ Explanation of code for main part of drawing

10: optical disc 11: optical pickup

12: playback / recording unit 13: digital signal processing unit

14: interface unit 15: microcomputer

16: sled motor 17: spindle motor

18: motor driver 19: light detection sensor

20: memory 21: buffer

100: optical disk drive 200: host

Claims (8)

Determining a track drive offset value based on the control feature information of the write scribe disk; And And a step of controlling the track drive by compensating the offset value while printing the label image. The method of claim 1, In the first step, by scanning the serrated outer ring of the control feature information of the light scribe disk, to detect the drive voltage for the track drive control, A method of controlling a track drive of a light scribe disc, characterized by identifying the type of the light scribe disc and the current focus lens position, and searching for and determining the offset value corresponding thereto from the track drive offset information previously stored and managed. . The method of claim 2, The track drive offset information, the track drive control method for a light scribe disk, characterized in that the offset value corresponding to the plurality of focus lens positions for each disc type is stored as an experimental result value. The method of claim 2, In the second step, during printing of the label image, the drive voltage detected for the track drive control and the offset value retrieved from the track drive offset information are added to control the track drive. Track drive control method. Reading means for reading control feature information of the write scribe disk; Storage means for storing an offset value for track drive control; And And a control means for controlling the track drive by determining a track drive offset value based on the control feature information of the light scribe disk, and then compensating the offset value when printing a label image. Track drive controls on the disc. The method of claim 5, The control means scans a serrated outer ring of the control feature information of the light scribe disk to detect a driving voltage for controlling the track drive, The track drive control apparatus of the light scribe disk, characterized in that the type of the light scribe disk and the current focus lens position are identified, and the offset value corresponding thereto is retrieved from the track drive offset information in the storage means. . The method of claim 6, The track drive offset information, the track drive control apparatus for a light scribe disk, characterized in that the offset value corresponding to the plurality of focus lens positions for each disc type is stored as an experimental result value. The method of claim 6, The control means controls the track drive by adding the drive voltage detected for the track drive control and the offset value retrieved from the track drive offset information while printing the label image. Track drive control.
KR1020080011120A 2008-02-04 2008-02-04 Apparatus and method for controlling drive track on light scribe disc KR20090085304A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101048383B1 (en) * 2009-10-27 2011-07-11 주식회사 히타치엘지 데이터 스토리지 코리아 Apparatus and method for detecting media ID of light scribe disk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101048383B1 (en) * 2009-10-27 2011-07-11 주식회사 히타치엘지 데이터 스토리지 코리아 Apparatus and method for detecting media ID of light scribe disk

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