KR20090105551A - Apparatus and method for processing error correction in optical disc device - Google Patents

Abstract

PURPOSE: An error correction apparatus and method for an optical disc device are provided to reproduce an optical disc having an error in part by automatically skipping the part in which error correction is impossible. CONSTITUTION: An error correction method for an optical disc device is as follows. Information on error correction impossible location and identification information of an optical disc are linked and stored as error correction skip data. Data reproduction action on the part of the optical disc is automatically skipped, referring to the error correction skip data. The error correction skip data includes disc ID and skip start and end locations.

Description

Apparatus and method for processing error correction in optical disc device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an error correction processing apparatus and method in an optical disc device, and includes, for example, an optical disc for recording or reproducing data on various types of optical discs such as CDs, DVDs, BDs, and the like. An apparatus and method for error correction processing in a device are provided.

1 shows a configuration of a general optical disk device. For example, the optical disk device includes an optical disk 10, an optical pickup 11, a spindle motor 12, a sled motor 13, and a motor driver. 14, the playback and recording section 15, the codec 16, the microcomputer 17, the error correction section 18, the memory 19, and the like.

On the other hand, in the microcomputer 17, for example, as shown in Fig. 2, when the optical disk 10 is inserted (S10), the optical pickup 11 and the motor drive unit 14, the operation control, After performing the focus and tracking servo operation, a series of navigation information is downloaded which reads navigation information recorded in a specific area such as a lead-in area of the optical disc and stores it in the memory 19. The operation is performed (S11).

Further, in the micom 17, when a reproduction operation is requested by, for example, a user's key input (User_Key) or the like (S12), the navigation information is searched for, and the title recorded on the optical disc 10 is referred to. Alternatively, after searching the start position of a program, recorded audio and video data is read from the position (S13).

The microcomputer 17 controls the playback and recording unit 15, the codec 16, and the error correction unit 18 to reproduce and output the read audio and video data. For example, when an error occurs in the data decoded by the codec 16 (S14), the error correction unit 18 determines whether error correction is possible.

On the other hand, if it is determined that error correction is possible, the error correction unit 18 is operatively controlled to reproduce and output the audio and video data corrected with the normal data (S16). When the reproduction stop is requested (S17), the microcomputer 17 stops the reproduction operation normally (S18).

However, if the error correction is impossible as a result of the determination, the microcomputer 17 transmits a report message indicating that the error correction is impossible to an external connection device, for example, a host such as a personal computer (S19). ), The playback operation is automatically forcibly stopped (S20).

Then, since an operation performed by the user requests an operation (S21), even if an error occurs in a part of the data read out from the optical disc 10, the error correction unit 18 generates the error correction process. If possible, the playback operation continues.

However, in a general optical disc device, if a fatal error occurs in a part of the data read out from the optical disc 10 as described above, and the error correction is impossible, the reproduction operation is unconditionally forcibly stopped. Even if a fatal error exists, if it is determined that error correction is impossible, there is a problem that the reproduction operation for the optical disc is forcibly stopped.

Therefore, the present invention was created to solve the above problems, and for example, in an optical disc device, data read out by performing an optical disc play operation or a scan operation before the optical disc reproduction operation. If error correction is not possible, the disc ID Disc_ID and the skip start and end position information are linked to each other and stored and managed as error correction skip information, and then the same optical disc is reproduced. SUMMARY OF THE INVENTION It is an object of the present invention to provide an error correction processing apparatus and method for an optical disk device for automatically skipping a section in which error correction is impossible by referring to the error correction skip information.

An error correction processing method in an optical disk device according to the present invention for achieving the above object comprises the steps of storing data error correction impossible position information of an optical disk and identification information of the optical disk as error correction skip information. ; And partially retrieving a data reproducing operation of the optical disc by searching and referring to the error correction skip information.

The error correction skip information may include a disc ID and skip start and end position information.

The error correction skip information may be generated and updated during the optical disc reproducing operation, or generated and updated by a scan operation prior to the optical disc reproducing operation, and stored in the nonvolatile memory.

In the second step, if error correction is not possible during optical disc playback, the playback position and the disc ID are checked, and then compared with the error correction skip information, and if the playback is skipped, the corresponding section is skipped and the playback skipped section is performed. Otherwise, the interval is stored in the error correction skip information.

Further, an error correction processing apparatus in an optical disc device according to the present invention includes error correction means for correcting an error of data read from the optical disc; Storage means for associating identification information of the optical disk with location information of data that cannot be corrected as errors and storing the error correction skip information; And control means for partially skipping the data reproducing operation of the optical disc by searching and referring to the error correction skip information.

The error correction skip information may include a disc ID and skip start and end position information.

The storage means is a non-volatile memory, and the error correction skip information is generated and updated during the optical disc reproducing operation, or is generated and updated by a scan operation prior to the optical disc reproducing operation,

If the error correction is not possible during the reproduction of the optical disc, the control means checks the reproduction position and the disc ID, compares the error correction skip information, and searches and compares the error correction skip information. Otherwise, the section may be stored in the error correction skip information.

An error correction processing apparatus and method in an optical disc device according to the present invention are, for example, used in various types of optical disc devices for recording or reproducing data on an optical disc such as a CD, a DVD, a BD, or the like. , Disc ID (Disc_ID) and skip start and end position information when error correction of data read by the scan operation before the optical disc playback operation is impossible, (Position) in association with the storage device to store and manage as error correction skip information, and when the same optical disc is reproduced thereafter, by searching for the error correction skip information, the system automatically skips some sections where error correction is impossible. Even if there is a fatal error in some sections of, the playback operation is normal for all sections except those sections. It can be done with

Hereinafter, preferred embodiments of an error correction processing apparatus and method in an optical disk device according to the present invention will be described in detail with reference to the accompanying drawings.

First, the error correction processing apparatus and method according to the present invention, such as an optical disc drive (ODD: Optical Disc Drive) for recording or playing back data on an optical disc such as a CD (CD), DVD (DVD), BD (BD) It can be applied to various types of optical disc devices.

On the other hand, in the optical disk device, for example, as described above with reference to FIG. 2, the optical pickup 11, the spindle motor 12, the sled motor 13, the motor drive unit 14, the reproducing and recording unit 15. ), A codec 16, a microcomputer 17, an error correction unit 18, a memory 18, and the like.

As the memory 18, a nonvolatile memory such as an EEPROM or a flash memory is used, and the memory 18 includes, for example, error correction as shown in FIG. Skip information (Error Correction Skip Information) is stored and managed.

The error correction skip information includes a disc ID Disc_ID, skip start position Skip_Start_Position information, and skip end position Skip_End_Position information, which are unique identification information assigned to the optical disc. For example, the microcomputer 17 determines whether an error correction of data read through the optical disk play operation or a scan operation prior to the optical disk reproduction operation is impossible according to a user's request. .

In addition, if the error correction is impossible as a result of the determination, after confirming the start recording position and the end recording position of the data that cannot be corrected, the position along with the disc ID Disc_ID which is unique identification information given to the optical disk, The information is stored and managed in the error correction skip information as the skip start position information and the skip end position information.

When the same optical disc is reproduced later, the error correction skip information is searched and referred to, and a section which cannot be corrected automatically is skipped so that even if a fatal error exists in some sections of the optical disc, In this regard, the reproduction operation is normally performed, which will be described in detail below.

4 and 5 show an operation flowchart of the error correction processing method in the optical disk device according to the present invention. For example, in the microcomputer 17, when the optical disk 10 is inserted (S30), The optical pickup 11 and the motor driving unit 14 are operated to perform a focus and tracking servo operation, and then the navigation information recorded in the lead-in area of the optical disc is read out, and the memory ( A series of navigation information download operations stored in 19 are performed (S31).

In addition, in the microcomputer 17, when a reproduction operation is requested by a user's key input (User_Key) or the like (S32), the navigation information is searched for, and the title or program recorded on the optical disc 10 is searched. After searching the start position of the program, the recorded audio and video data are read from the position (S33).

The microcomputer 17 controls the playback and recording unit 15, the codec 16, and the error correction unit 18 to reproduce and output the read audio and video data. For example, if an error occurs in the data decoded by the codec 16 (S34), the error correction unit 18 determines whether error correction is possible (S35).

On the other hand, if it is determined that error correction is possible, the error correction unit 18 is operated to reproduce and output the audio and video data corrected with error data as normal data (S36). When the reproduction stop is requested (S37), the microcomputer 17 stops the reproduction operation normally (S38), and performs any operation requested by the user (S39).

On the other hand, if the error correction is impossible as a result of the determination, the microcomputer 17 searches and confirms the current playback position and the disc ID Disc_ID which is unique identification information assigned to the optical disc (S40).

Then, the error correction skip information stored and managed in the memory 19 is searched and compared (S41). For example, the disc ID Disc_ID assigned to the optical disc 10 is '1111 0000'. If the disc ID of '1111 0000' is already stored in the error correction skip information, the microcomputer 17 skips the start position information stored in association with the '1111 0000' information in the error correction skip information. (Skip_Start_Position) and skip end position information (Skip_End_Position) are checked.

In addition, the microcomputer 17 determines that the current playback position determined to be the error correction impossible belongs to a playback skip section when the current playback position falls between the skip start position information and the skip end position information. For example, if it is determined through the above process that the playback skip section is impossible to correct an error (S42), the optical pickup 11 and the motor driver 14 are operated to control the playback position to the error end position information. Automatic skip to the corresponding position (S43).

On the other hand, if it is determined that it is not a playback skip section, it is determined as a newly found error correction impossible section, and a current playback position is stored in the error correction skip information as skip start position information for playback skip, and then normal. If a reproducing position capable of reproducing is found, a series of error correction skip information updating operations for storing the reproducing position as the skip end position information in the error correction skip information is performed (S44).

Accordingly, when the same optical disc is reproduced later, the error correction skip information can be searched and referred to, and a section which cannot be corrected automatically is skipped, and then the remaining sections can be normally played back.

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 illustrates an embodiment of a general optical disc device,

2 is a flowchart illustrating an error correction processing method in a general optical disk device.

3 illustrates an embodiment of error correction skip information according to the present invention;

4 and 5 show an operation flowchart of an error correction processing method in the optical disk device according to the present invention.

※ Explanation of code for main part of drawing

10: optical disc 11: optical pickup

12: spindle motor 13: sled motor

14 motor drive unit 15 playback and recording unit

16: codec 17: microcomputer

18: error correction unit 19: memory

Claims (8)

A step (1) of storing data error correction impossible position information of the optical disc and identification information of the optical disc as error correction skip information; And And step (2) of partially skipping data reproducing operation of the optical disc by searching and referring to the error correction skip information. The method of claim 1, And the disc ID and skip start and end position information are stored in the error correction skip information in association with each other. The method of claim 1, The error correction skip information is generated and updated during the optical disc reproducing operation, or is generated and updated by a scan operation prior to the optical disc reproducing operation, and stored in the nonvolatile memory. Treatment method. The method of claim 1, In step 2, if error correction is not possible during the optical disc playback, the playback position and the disc ID are checked, and then compared with the error correction skip information, the playback section is skipped if the playback is skipped. And storing the corresponding section in the error correction skip information. Error correction means for correcting an error of data read from the optical disc; Storage means for associating identification information of the optical disc with positional information of data that cannot be corrected as errors and storing the same as error correction skip information; And And control means for partially skipping the data reproducing operation of the optical disc by searching and referring to the error correction skip information. The method of claim 5, And the disc ID and skip start and end position information are stored in the error correction skip information in association with each other. The method of claim 5, The storage means is a nonvolatile memory, and the error correction skip information is generated and updated during an optical disk reproducing operation, or is generated and updated by a scan operation prior to the optical disk reproducing operation. Error correction processing device. The method of claim 5, If the error correction is not possible during the reproduction of the optical disc, the control unit checks the reproduction position and the disc ID, compares the error correction skip information, and searches and compares the error correction skip information. And the corresponding section is stored in the error correction skip information.

Images