KR20110107439A - Apparatus and method for controlling servo in optical disc drive archive system - Google Patents

Apparatus and method for controlling servo in optical disc drive archive system Download PDF

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Publication number
KR20110107439A
KR20110107439A KR1020100026535A KR20100026535A KR20110107439A KR 20110107439 A KR20110107439 A KR 20110107439A KR 1020100026535 A KR1020100026535 A KR 1020100026535A KR 20100026535 A KR20100026535 A KR 20100026535A KR 20110107439 A KR20110107439 A KR 20110107439A
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KR
South Korea
Prior art keywords
optical
adjustment value
servo
optical disc
magazine
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KR1020100026535A
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Korean (ko)
Inventor
공성필
Original Assignee
주식회사 히타치엘지 데이터 스토리지 코리아
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Priority to KR1020100026535A priority Critical patent/KR20110107439A/en
Publication of KR20110107439A publication Critical patent/KR20110107439A/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
    • G11B19/10—Control of operating function, e.g. switching from recording to reproducing by sensing presence or absence of record in accessible stored position or on turntable
    • 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
    • G11B7/0938—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 servo format, e.g. guide tracks, pilot signals
    • 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 method for controlling a servo in an optical disc drive archive system according to the present invention, for example, when an optical disc of any one magazine is first inserted into an optical disc drive in a drive bay, performs an initial servo operation for each optical disc. After performing the data recording or reproducing operation, if the optical discs of a particular magazine that has previously performed the data recording or reproducing operation are inserted, the data recording or reproducing operation can be performed quickly without the initial servo operation. By doing so, it is possible to efficiently shorten the start time of data recording or reproducing operation for a plurality of optical discs inserted in the drive bay, and also to avoid inefficiently repeating the initial servo operation for the plurality of optical discs. Improve the overall system durability It is possible to kill.

Description

Apparatus and method for controlling servo in optical disc drive archive system

The present invention relates to a servo control apparatus and method in an optical disc drive archive system for storing and managing various types of data, for example, music files, movie files, document files, and the like, on a plurality of optical discs.

In general, a widely used optical disc drive (ODD) includes, for example, an optical disc 10, a spindle motor 11, a sled motor 12, and an optical pickup 13, as shown in FIG. 1. ), The playback / recording unit 14, the controller 15, the motor driver 16, the memory 17, and the like.

In the controller 15, for example, when the optical disc (for example, DVD-R) or rewritable optical disc (for example, DVD-RW) that can be written once is inserted into the optical disc drive, the motor driver 16 ), The spindle motor 11 is rotated, and the sled motor 13 is rotated.

Accordingly, the optical disc 10 is rotated at high speed by the rotation operation of the spindle motor 11, and the optical pickup 13 is rotated by the rotation operation of the sled motor 12. Inner).

In the controller 15, a series of focus servo operations and tracking (laser beams) emitted from the optical pickup 13 are focused on the recording layer of the optical disc 10. Tracking) Servo operation is performed.

For example, as shown in FIG. 2, in the controller 15, the laser beam is recorded on the optical disk while gradually raising the optical pickup 13 in a vertical direction from a preset initial position. Will be focused on.

The optical pickup 13 measures the distances D1, D2, and D3 moved in the vertical direction to determine the type of the optical disc. For example, as shown in FIG. ), The recording layer is formed at 1.1 mm from the surface layer, the recording layer of the DVD is formed at 0.6 mm from the surface layer, and the recording layer of the BD is formed at 0.1 mm from the surface layer. Therefore, by measuring the distance (D1, D2, D3) the optical pickup 13 is moved in the vertical direction, the optical disk 10 is one of a CD (CD), DVD (DVD), and BD (BD) Will be determined.

In addition, the controller 15 measures the level of the focus error (FE) signal output from the optical pickup 13 so that the optical disk can be reproduced, a recording-only optical disk (ROM), a recordable optical disk (Recordable), One of the rewritable optical discs is determined.

For example, as shown in Fig. 3, in the case of a reproduction-only DVD (DVD-ROM), since the reflectance is relatively high, the level L1 of the focus error signal is detected to be high, and the DVD (DVD that can be written once) is detected. In the case of -R, the level L2 of the focus error signal is normally detected because the reflectance is normal, and in the case of the rewritable DVD-RW, the reflectance level is relatively low, so the level L3 of the focus error signal L3 is relatively low. ) Is detected low, the controller 15 measures the levels (L1, L2, L3) of the focus error signal, and allows the optical disc 10 to be read-only DVD (DVD-ROM), which can be written once. (DVD-R) or rewritable optical disc (DVD-RW).

In the controller 15, for example, as shown in FIG. 4, a predetermined test (PCA: Power Calibration Area (PCA) section allocated to a recordable DVD-R) is performed. Test) data is recorded to perform a series of OPC (OPC) operations for adjusting the recording optical power of the laser beam, and then performing a data recording operation.

In the controller 15, when the data recording operation is completed, as shown in FIG. 4, for example, navigation information such as a data recording start address and size information, and the like. (Also referred to as “control data”) is recorded in a lead-in area, and then the navigation information is searched and referenced when performing a data recording or reproducing operation.

On the other hand, in recent years, for example, an optical disk drive archive system (ODD Archive System) in the form of a juke box or the like is becoming more and more commercially available, for example, in the case of an archive, to manage the storage of the original data On the other hand, in the case of a backup (Back Up), a copy of data is stored and managed, and the archive and the backup are substantially different.

The optical disk drive archive system may include a drive bay including a plurality of optical disk drives (ODDs) and a disc magazine unit including a plurality of magazines in which a plurality of optical disks are grouped. It may be configured to include.

In the optical disc drive archive system, when a plurality of optical discs grouped into any one magazine are inserted into a plurality of optical disc drives provided in the drive bay, according to a user's selection, Each servo operation is performed.

For example, the first to fourth optical discs Disc 1 to 4, which are grouped into a first magazine, may be connected to the first to fourth optical disc drives Drive 1 to 4 provided in the drive bay. Once inserted, the first to fourth optical disk drives perform a series of initial servo operations for the first to fourth optical disks, and then perform data recording or reproducing operations.

However, in the case of performing the initial servo operation for the first to fourth optical disks as described above, it takes a relatively longer time than performing the initial servo operation for one optical disk, and also any other magazine, for example For example, the fifth to eighth optical discs Disc 5 to 8 of the second magazine Magazine 2, which have previously performed a data recording or reproducing operation, may be inserted into the drive bays. Since the initial servo operation for the eighth optical discs is performed again, there is a problem that the start time of the data recording or reproducing operation is inefficiently delayed.

The present invention, for example, in an optical disc drive archive system, when an optical disc of any one magazine is first inserted into an optical disc drive in a drive bay, performs an initial servo operation for each optical disc, and then writes data or Optical disks for performing a reproducing operation, but when an optical disc of a particular magazine that has previously performed data recording or reproducing operations is inserted, can efficiently and quickly perform data recording or reproducing operations without an initial servo operation. To provide a servo control apparatus and method in a drive archive system.

In an optical disc drive archive system according to the present invention, a servo control method includes a drive bay having a plurality of optical disc drives and a disc magazine unit having magazines in which a plurality of optical discs are grouped. A first step of performing an initial servo operation for each optical disc, and then performing a data recording or reproducing operation when optical disc drives of any one magazine are first inserted into the optical disc drives of the drive bay; Storing the servo adjustment value and navigation information in magazine management information when the data recording or reproducing operation is completed, and retrieving the stored servo adjustment value and navigation information when a data recording or reproducing operation is requested; And performing the data recording or reproducing operation immediately if the retrieved servo adjustment value and the navigation information are valid, and if not, performing the initial servo operation and then performing the data recording or reproducing operation. Features,

The magazine management information may include one or more of a magazine number, a disk number, a disk type, an adjustment value, navigation information, a file name, and status information.

The servo adjustment value may be any one or more of a focus servo adjustment value, a tracking servo adjustment value, a recording optical power adjustment value, and a reproduction optical power adjustment value.

The navigation information may be any one or more of a data write start address and a data size.

The status information is in / out information indicating an insertion or ejection state of the optical disk, and the magazine management information is initialized when the system is turned off.

In addition, the servo control apparatus in the optical disc drive archive system according to the present invention includes an optical disc drive archive system including a drive bay having a plurality of optical disc drives and a disc magazine unit having magazines in which a plurality of optical discs are grouped. A loader for inserting any one magazine optical disk into optical disk drives in the drive bay; And a controller for controlling an initial servo operation on the optical discs inserted into the optical disc drives, wherein the controller, when the data recording or reproducing operation of the optical disc is completed, displays the servo adjustment value and the navigation information. Store in management information, and if a data recording or reproducing operation is requested later, retrieve the stored servo adjustment value and navigation information, and if the retrieved servo adjustment value and navigation information are valid, perform a data recording or reproducing operation immediately, If not valid, after performing the initial servo operation, characterized in that for performing the data recording or reproducing operation,

The magazine management information may include one or more of a magazine number, a disk number, a disk type, an adjustment value, navigation information, a file name, and status information.

The servo adjustment value may be any one or more of a focus servo adjustment value, a tracking servo adjustment value, a recording optical power adjustment value, and a reproduction optical power adjustment value.

The navigation information may be any one or more of a data write start address and a data size.

The state information is in / out information indicating an insertion or ejection state of the optical disc, and the magazine management information is initialized when the system is turned off.

An apparatus and method for controlling a servo in an optical disc drive archive system according to the present invention, for example, when an optical disc of any one magazine is first inserted into an optical disc drive in a drive bay, performs an initial servo operation for each optical disc. After performing the data recording or reproducing operation, if the optical discs of a particular magazine that has previously performed the data recording or reproducing operation are inserted, the data recording or reproducing operation can be performed quickly without the initial servo operation. By doing so, it is possible to efficiently shorten the start time of data recording or reproducing operation for a plurality of optical discs inserted in the drive bay, and also to avoid inefficiently repeating the initial servo operation for the plurality of optical discs. Improve the overall system durability It is possible to kill.

1 shows a configuration of an embodiment of a general optical disk drive,
2 and 3 illustrate an embodiment of a process of determining a type of a general optical disc,
FIG. 4 illustrates an embodiment in which test data and navigation information are recorded in a specific area of a general recordable DVD.
5 is a block diagram of an embodiment of an optical disk drive archive system to which the present invention is applied;
6 illustrates an embodiment in which optical discs of a first magazine are inserted into a drive bay according to the present invention;
7 is a flowchart illustrating an embodiment of a servo control method in an optical disc drive archive system according to the present invention;
8 illustrates an embodiment of magazine management information stored and managed according to the present invention.

Hereinafter, a preferred embodiment of a servo control apparatus and method in an optical disc drive archive system according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 5 shows a configuration of an embodiment of an optical disc drive archive system to which the present invention is applied. For example, the optical disc drive archive system 200 includes an interface module 20, a reproduction / recording unit 21, The storage 22, the drive bay 23, the disk magazine unit 24, the network module 25, the controller 26, the loader 27, and the memory 28 may be configured to be included.

Meanwhile, various local devices, such as a personal computer (PC) or USB memory, may be connected to the interface module 20, and the network module 25 may be connected to the interface module 20. A content server that provides various types of content such as music files, movie files, document files, etc. may be connected through a network such as the Internet.

In addition, the storage 22 may include, for example, a large capacity hard disk (HDD), and the drive bay 23 may include a plurality of optical disk drives. For example, as shown in FIG. 6, the drive bay may include first to fourth optical disk drives Drive 1 to 4.

In addition, the disc magazine unit 24 may include a plurality of magazines in which a plurality of optical discs are grouped. For example, the first to fourth optical discs Disc 1 to 4 may be included. The grouped first magazine (Magazine 1), the second magazine (Magazine 2) in which the fifth to eighth optical discs Disc 5 to 8 are grouped, and the ninth to twelfth optical discs (Disc 9 to 12). The grouped third magazine Magazine 3 and the fourth magazine Magazine 4 grouped with the thirteenth through sixteenth optical discs Discs 13 through 16 may be included.

Meanwhile, the loader 27 may include optical discs (eg, Disc) of any one magazine (eg, Magazine 1) included in the disc magazine unit 24 according to the operation control of the controller 26. 1 to 4 are inserted into the optical disk drives provided in the drive bay 23, respectively, to perform a series of disk loading operations such as inserting or ejecting.

The memory 28 may be a nonvolatile memory such as a flash memory or an EEPROM. The memory 28 includes a plurality of optical discs grouped in respective magazines. Management information, for example, magazine management information (Magazine Management Information) can be stored and managed.

In addition, the controller 26 controls the loader 27 in response to, for example, a user's request, so that the optical disks of any one magazine included in the disk magazine unit 24 are stored in the drive bay. After insertion into (23), a series of initial servo operations are performed for the respective optical disks.

The controller 26 performs an operation control of the reproduction / recording unit 21 to perform a data recording or reproducing operation. Then, when the data recording or reproducing operation is completed, servo adjustment for each of the optical discs is performed. Values, navigation information, and the like are stored in the magazine management information.

On the other hand, the controller 26 retrieves the servo adjustment value and the navigation information stored in the magazine management information when the optical discs of a particular magazine that have previously performed data recording or reproducing operations are inserted into the drive bay. With reference to this, the data recording or reproducing operation is immediately performed without a separate initial servo operation, which will be described in detail below.

Fig. 7 shows an operation flowchart of an embodiment of the servo control method in the optical disc drive archive system according to the present invention. For example, in the controller 26, at the request of the user, the loader 27 is shown. Operation control to select any one of the magazines included in the disc magazine unit 24, and then insert the optical discs of the selected magazine into the optical disc drives of the drive bay 23 (S10).

For example, according to a user's request, the first to fourth optical disks Disc 1 to 4 that are grouped into the first magazine Magazine 1 may be stored in the first to fourth optical disk drives of the drive bay 23. When first inserted into Drives 1 to 4, the controller 26 controls the first to fourth optical disk drives to perform a series of initial servo operations for the first to fourth optical disks, respectively. It is made (S11).

For example, as described above with reference to FIGS. 2 to 4, through the initial servo operation, the distances D1, D2, and D3 in which the optical pickup has moved in the vertical direction, and the level L1 of the focus error signal. L2 and L3 are measured to determine the type of optical disc, perform focus and tracking servo adjustment operations, and record optical power or reproduction optical power adjustment operations.

On the other hand, the controller 26, when the above-described initial servo operation is completed, the operation / control of the playback / recording unit 21, and performs the data recording or playback operation according to the user's request (S12) Afterwards, when the data recording or reproducing operation is completed (S13), the servo adjustment value and the navigation information for the first to fourth optical disks are checked (S14).

The controller 26 stores the checked servo adjustment value, navigation information, and the like in the magazine management information (S15). The magazine management information is, for example, as shown in FIG. Likewise, Magazine No., Disc No., Disc Type, Adjustment Value, Navigation Info., File Name, and Status ( Status) information and the like may be stored in association with a look up table.

On the other hand, in the disc type, for example, information for indicating that the optical disc is a recordable DVD-R can be recorded, and the adjustment value includes a focus servo for the optical disc. The adjustment value, the tracking servo adjustment value, the recording optical power (W-OPC) adjustment value, the reproduction optical power (R-OPC) adjustment value, and the like can be recorded.

In addition, the navigation information may include a data recording start address and a data size information of the corresponding optical disc, and the file name of the data recorded on the optical disc may be recorded in the file name. ,

In the state information, for example, in / out information for indicating whether the corresponding optical disc is inserted into the optical disc drive in the drive bay may be recorded.

For example, as shown in FIG. When the first to fourth optical discs Disc 1 to 4 are inserted into the drive bay, the controller 26 records the 'In' information in the state information associated with the first to the fourth optical discs. Afterwards, when the first to fourth optical discs Disc 1 to 4 are discharged from the drive bay, 'Out' information is recorded in the state information associated with the first to fourth optical discs.

On the other hand, the status information, for example, if any of the magazines provided in the disk magazine unit 15 is discharged to the outside by the user and replaced, the optical disks of the replaced magazine In the status information, 'Out' information may be recorded.

In addition, the magazine management information may be initialized, for example, when the system is powered off. This means that after the system is powered off, the user may select one of several magazines provided in the disk magazine unit 24. This is because the above magazines can be arbitrarily replaced, or some of the plurality of optical disks grouped into one magazine can be replaced with another optical disk.

On the other hand, the controller 26, when the magazine management information is stored and managed as described above, if a data recording or reproducing operation is requested (S16), after retrieving the adjustment value and navigation information and the like stored in the magazine management information, (S17), it is determined whether the retrieved adjustment value and navigation information are valid information (S18).

For example, in a state in which the first to fourth optical discs Disc 1 to 4 of the first magazine are inserted into the first to fourth optical disc drives Drive 1 to 4 of the drive bay, respectively. When the recording or reproducing operation is requested again, the controller 26 checks the state information stored in association with the first to fourth optical discs of the magazine management information.

And, if the state information is a value of 'In' indicating the insertion state of the optical disk, each adjustment value and navigation information stored in association with the first to fourth optical disk, that is, focus servo adjustment value, tracking adjustment value, recording After determining that the optical power adjustment value, the reproduction optical power adjustment value, and the data recording start address and data size information are valid information, it is possible to quickly perform a data recording or reproducing operation using the above information without a separate initial servo operation. In operation S19, a corresponding operation requested by the user is performed at operation S20.

On the other hand, in the controller 26, when the state information is a value of 'Out' indicating an ejection state of the optical disc, information on which the respective adjustment values and navigation information, etc. stored in association with the first to fourth optical discs are invalid, is invalid. In this case, normal optical disc insertion, initial servo operation, and so on are performed again.

Accordingly, it is possible to quickly perform the data recording or reproducing operation on the optical discs of a particular magazine that has previously performed the data recording or reproducing operation, without a separate initial servo operation.

For reference, the drive bay, the disc magazine unit, and the magazine may be referred to as any other term, for example, a multi drive, a disc cartridge unit, a cartridge, and the like.

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.

10 optical disc 11: spindle motor
12: sled motor 13: optical pickup
14: playback / recording unit 15: controller
16: motor dry 17: memory
20: interface module 21: playback / recording unit
22: storage 23: drive bay
24: disc magazine unit 25: network module
26 controller 27 loader
28: memory 100: optical disk drive
200: optical disc drive archive system

Claims (10)

In an optical disc drive archive system, comprising a drive bay having a plurality of optical disc drives, and a disk magazine unit having magazines in which a plurality of optical discs are grouped,
A first step of performing an initial servo operation for each optical disc, and then performing a data recording or reproducing operation when optical disc drives of any one magazine are first inserted into the optical disc drives of the drive bay;
Storing the servo adjustment value and navigation information in magazine management information when the data recording or reproducing operation is completed, and retrieving the stored servo adjustment value and navigation information when a data recording or reproducing operation is requested; And
And if the retrieved servo adjustment value and navigation information are valid, immediately performing a data recording or reproducing operation, and if not, performing an initial servo operation and then performing a data recording or reproducing operation. Servo control method in an optical disk drive archive system. The method of claim 1,
And one or more of a magazine number, a disk number, a disk type, an adjustment value, navigation information, a file name, and status information are stored in the magazine management information in association with each other. The method of claim 2,
And the servo adjustment value is any one or more of a focus servo adjustment value, a tracking servo adjustment value, a recording optical power adjustment value, and a reproduction optical power adjustment value. The method of claim 2,
And wherein the navigation information is at least one of a data write start address and a data size. The method of claim 2,
The status information is in / out information indicating an insertion or ejection state of the optical disk, and the magazine management information is initialized when the system is turned off. In an optical disc drive archive system, comprising a drive bay having a plurality of optical disc drives, and a disk magazine unit having magazines in which a plurality of optical discs are grouped,
A loader for inserting any one optical disc into the optical disc drives in the drive bay; And
It comprises a controller for controlling the initial servo operation for the optical disks inserted into the optical disk drives,
When the data recording or reproducing operation of the optical disc is completed, the controller stores the servo adjustment value and the navigation information in the magazine management information, and when the data recording or reproducing operation is requested, the controller retrieves the stored servo adjustment values and the navigation information. But
If the retrieved servo adjustment value and navigation information are valid, the data recording or reproducing operation is immediately performed. If not, the optical disc drive archiving system is characterized by performing an initial servo operation and then performing a data recording or reproducing operation. Servo control device The method of claim 6,
And one or more of a magazine number, a disc number, a disc type, an adjustment value, navigation information, a file name, and status information are stored in the magazine management information in association with each other. The method of claim 7, wherein
And the servo adjustment value is any one or more of a focus servo adjustment value, a tracking servo adjustment value, a recording optical power adjustment value, and a reproduction optical power adjustment value. The method of claim 7, wherein
And wherein the navigation information is at least one of a data write start address and a data size. The method of claim 7, wherein
The status information is in / out information indicating an insertion or ejection state of the optical disk, and the magazine management information is initialized when the system is turned off.
KR1020100026535A 2010-03-25 2010-03-25 Apparatus and method for controlling servo in optical disc drive archive system KR20110107439A (en)

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