KR20040093620A - Method for discriminating error disc of disk player - Google Patents

Method for discriminating error disc of disk player Download PDF

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Publication number
KR20040093620A
KR20040093620A KR1020030027558A KR20030027558A KR20040093620A KR 20040093620 A KR20040093620 A KR 20040093620A KR 1020030027558 A KR1020030027558 A KR 1020030027558A KR 20030027558 A KR20030027558 A KR 20030027558A KR 20040093620 A KR20040093620 A KR 20040093620A
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KR
South Korea
Prior art keywords
disk
error
disc
signal
player
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Application number
KR1020030027558A
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Korean (ko)
Inventor
송시철
Original Assignee
주식회사 대우일렉트로닉스
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Priority to KR1020030027558A priority Critical patent/KR20040093620A/en
Publication of KR20040093620A publication Critical patent/KR20040093620A/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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: A method for judging an error disk of a disk player is provided to quickly judge whether a disk has an error while the disk is inserted into a disk player, by using a PI(Pull In) signal level. CONSTITUTION: An actuator optically picks up a disk set within a disk player, and reads information recorded on the disk(10). An error disk judge extracts a PI signal from an optical pickup signal supplied from the actuator(12). The error disk judge decides whether a level of the extracted PI signal is out of a preset setup value range(14). If not, a servo lock is attempted(16). A normal process is performed(18). If the level of the extracted PI signal is out of the preset range, the disk is decided as an error disk(20).

Description

디스크 플레이어의 에러 디스크 판별 방법{METHOD FOR DISCRIMINATING ERROR DISC OF DISK PLAYER}How to determine the error disc of a disc player {METHOD FOR DISCRIMINATING ERROR DISC OF DISK PLAYER}

본 발명은 디스크 플레이어(disc player)의 에러 디스크(error disc) 판별 방법에 관한 것으로, 특히, 디스크 플레이어에 디스크를 삽입시 디스크의 에러 여부를 판별하는 방법에 관한 것이다.The present invention relates to a method for determining an error disc of a disc player, and more particularly, to a method for determining whether an error of a disc occurs when a disc is inserted into a disc player.

현재 디스크 플레이어에 적용되고 있는 디스크 검출 알고리즘(disc detection algorithm)은 디스크 플레이어의 초기 구동시 PI(Pull In) 신호, 포커스 에러(focus error) 신호, 및 포커스 에러의 피크치 개수를 이용해서 디스크 종류를 판별하여 서보 락(servo lock)을 시도한다. 이때, 서보 락을 실패하면 각 디스크 모드별로 서보 락을 약 20회 정도 성공될 때까지 재시도한다. 이와 같이 20회 정도의 서보 락 재시도에도 불구하고 서보 락을 실패할 경우 에러 디스크로 판별한다.The disc detection algorithm currently applied to the disc player determines the disc type using the PI (Pull In) signal, the focus error signal, and the number of peak values of the focus error when the disc player is initially driven. Attempt to lock the servo. At this time, if the servo lock fails, retry the servo lock for about 20 times in each disk mode. In this way, if the servo lock fails even after about 20 servo lock retries, it is determined as an error disk.

따라서, 종래의 기술에 있어서는 디스크 플레이어의 초기 구동시 디스크 플레이어 내에 안착된 디스크가 뒤집혀 있거나 데이터가 없는 경우 20회 정도의 서보 락 재시도를 실시함에 따라 에러 디스크 판단에 많은 시간을 소요하게 된다.Therefore, in the related art, when the disc seated in the disc player is turned upside down or there is no data when the disc player is initially driven, it takes much time to determine the error disc by performing about 20 servo lock retries.

이와 같은 에러 디스크에서 검출되는 PI 신호 레벨이 매우 크거나 매우 작다는 것에 착안하면 에러 디스크를 매우 신속하게 판별할 수 있을 것이다.Taking into account that the PI signal level detected in such an error disk is very large or very small, it is possible to determine the error disk very quickly.

본 발명은 상술한 결점을 해결하기 위하여 안출한 것으로, 디스크 플레이어에 디스크를 삽입시 디스크의 에러 여부를 PI 신호 레벨을 이용하여 신속하게 판별하는 디스크 플레이어의 에러 디스크 판별 방법을 제공하는 데 그 목적이 있다.Disclosure of Invention The present invention has been made to solve the above-mentioned shortcomings, and an object of the present invention is to provide an error disc discrimination method of a disc player that quickly determines whether an error occurs when the disc is inserted into the disc player using a PI signal level. have.

도 1은 본 발명에 따른 디스크 플레이어의 에러 디스크 판별 방법을 실시하기 위한 디스크 플레이어의 일 실시예를 나타낸 개략도,1 is a schematic diagram showing an embodiment of a disc player for implementing an error disc discrimination method of a disc player according to the present invention;

도 2는 본 발명에 따른 디스크 플레이어의 에러 디스크 판별 방법의 일 실시예를 단계별로 나타낸 순서도.2 is a flowchart showing step by step an embodiment of an error disc discrimination method of a disc player according to the present invention;

이하, 첨부된 도면을 참조하여 본 발명에 따른 실시예를 상세히 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 디스크 플레이어의 에러 디스크 판별 방법을 실시하기 위한 디스크 플레이어의 일 실시예를 나타낸 개략도로, 디스크(14)를 회전시키는 스핀들 모터(spindle motor)(12), 스핀들 모터(12)의 구동을 제어하는 서보 마이콤(servo micom)(10), 디스크(14)의 정보를 광 픽업(optical pickup)하는 엑추에이터(16), 및 엑추에이터(16)로부터 제공되는 광 픽업 신호에서 PI 신호를 추출하여 이 추출된 PI 신호를 이용하서 디스크의 에러 여부를 판별하는 에러 디스크 판별부(18)로 구성된다.1 is a schematic diagram showing an embodiment of a disc player for implementing an error disc discrimination method of a disc player according to the present invention, in which a spindle motor 12 and a spindle motor 12 for rotating a disc 14 are shown. The PI signal can be obtained from a servo micom 10 that controls the driving of the < RTI ID = 0.0 >), an actuator 16 that optically picks up information of the disk 14, and an optical pickup signal provided from the actuator 16. < / RTI > And an error disk discriminating unit 18 which determines whether or not the disk has an error by using the extracted PI signal.

이와 같이 구성된 본 발명을 도 2를 참조하여 보면 다음과 같다.The present invention configured as described above will be described with reference to FIG. 2.

먼저, 엑추에이터(16)는 디스크 플레이어 내에 안착된 디스크(14)를 광 픽업하여 디스크(14)에 기록된 정보를 리드한다(단계 10).First, the actuator 16 optically picks up the disc 14 seated in the disc player and reads the information recorded on the disc 14 (step 10).

에러 디스크 판별부(18)는 엑추에이터(16)로부터 제공되는 광 픽업 신호에서 PI 신호를 추출한다(단계 12).The error disk discriminating unit 18 extracts the PI signal from the optical pickup signal provided from the actuator 16 (step 12).

에러 디스크 판별부(18)는 추출된 PI 신호 레벨이 미리 정해놓은 설정치 범위를 벗어나는지 여부를 판단한다(단계 14).The error disk discriminating unit 18 determines whether the extracted PI signal level is out of a predetermined set range (step 14).

에러 디스크 판별부(18)는 단계 14의 판단 결과, PI 신호 레벨이 설정치 범위를 벗어나지 않을 경우 서보 락을 시도한다(단계 16).The error disk discriminating unit 18 attempts a servo lock when the PI signal level does not exceed the set value range as a result of the determination in step 14 (step 16).

정상 진행한다(단계 18).Proceed to normal (step 18).

에러 디스크 판별부(18)는 단계 14의 판단 결과, PI 신호 레벨이 설정치 범위를 벗어나는 경우 에러 디스크로 판별한다(단계 20).As a result of the determination in step 14, the error disk discriminating unit 18 discriminates as an error disk if the PI signal level is out of the set value range (step 20).

이상에서 설명한 바와 같이, 본 발명은 디스크 플레이어에 디스크를 삽입시 디스크의 에러 여부를 PI 신호 레벨을 이용하여 신속하게 판별한다. 따라서, 에러 디스크 처리가 신속해 진다.As described above, the present invention quickly determines whether an error in the disc when the disc is inserted into the disc player using the PI signal level. Therefore, error disk processing is speeded up.

Claims (1)

디스크 플레이어에서 에러 디스크 판별 방법에 있어서,In the error disc determination method in the disc player, 상기 디스크 플레이어 내에 안착된 디스크를 광 픽업하는 제 1 단계;Optically picking up a disc seated in the disc player; 상기 광 픽업 신호에서 PI 신호를 추출하는 제 2 단계; 및Extracting a PI signal from the optical pickup signal; And 상기 추출된 PI 신호 레벨이 미리 정해놓은 설정치 범위를 벗어나는 경우 에러 디스크로 판별하는 제 3 단계;A third step of determining as an error disk when the extracted PI signal level is out of a predetermined set range; 를 포함하는 디스크 플레이어의 에러 디스크 판별 방법.Error disc determination method of the disc player comprising a.
KR1020030027558A 2003-04-30 2003-04-30 Method for discriminating error disc of disk player KR20040093620A (en)

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Application Number Priority Date Filing Date Title
KR1020030027558A KR20040093620A (en) 2003-04-30 2003-04-30 Method for discriminating error disc of disk player

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100727879B1 (en) * 2006-01-20 2007-06-14 삼성전자주식회사 Optical disc distinction device and method using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100727879B1 (en) * 2006-01-20 2007-06-14 삼성전자주식회사 Optical disc distinction device and method using the same

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