KR980004476A - 틸트 에러 제어장치 - Google Patents

틸트 에러 제어장치 Download PDF

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Publication number
KR980004476A
KR980004476A KR1019960020865A KR19960020865A KR980004476A KR 980004476 A KR980004476 A KR 980004476A KR 1019960020865 A KR1019960020865 A KR 1019960020865A KR 19960020865 A KR19960020865 A KR 19960020865A KR 980004476 A KR980004476 A KR 980004476A
Authority
KR
South Korea
Prior art keywords
error
optical disc
radial
detecting
tangential
Prior art date
Application number
KR1019960020865A
Other languages
English (en)
Other versions
KR100198052B1 (ko
Inventor
김영식
Original Assignee
구자홍
Lg 전자주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 구자홍, Lg 전자주식회사 filed Critical 구자홍
Priority to KR1019960020865A priority Critical patent/KR100198052B1/ko
Publication of KR980004476A publication Critical patent/KR980004476A/ko
Application granted granted Critical
Publication of KR100198052B1 publication Critical patent/KR100198052B1/ko

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Classifications

    • 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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
    • 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
    • G11B7/0908—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 for focusing only
    • G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/13—Optical detectors therefor

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

본 발명은 광디스크의 틸트에러를 실시간적으로 정확하게 검출하고 검출된 틸트에러에 의하여 광디스크 기록기의 재생신호를 실시간적으로 보정하여 광디스크 기록기의 기록/재생 특성을 향상시키는 틸트에러 제어장치에 관한 것이다.
상기 틸트에러 제어장치는 광디스크의 정보 트랙을 중심으로 대각선 방향으로 3개의 광빔을 조사하여 정보를 픽업하는 광픽업과, 대각선을 이루도록 광픽업에 설치되어 광디스크에 의해 반사되는 3개의 광빔을 각각 검출하도록 3개의 4분할 광검출기와, 외측의 2개의 4분할 광검출기의 출력으로부터 레디얼 에러를 검출하는 레디얼 에러 검출부와, 외측의 2개의 4분할 광검출기의 출력으로부터 탄젠셜 에러를 검출하는 탄젠셜 에러 검출부와, 고주파 신호를 레디얼 및 탄젠셜 에러와 차동-증폭하여 고주파 신호에 포함된 에러를 보정하는 차동증폭기로 구성된다.

Description

틸트 에러 제어장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명의 실시예에 따른 광디스크의 틸트 에러 제어장치의 블럭도이다.

Claims (2)

  1. 광디스크의 정보를 기록/재생하는 광디스크로 기록기에 있어서, 상기 광디스크의 정보 트랙을 중심으로 대각선 방향으로 3개의 광빔을 조사하여 정보를 픽업하는 광픽업과, 대각선을 이루도록 상기 광픽업에 설치되어 상기 광디스크에 의해 반사되는 3개의 광빔을 각각 검출하도록 3개의 4분할 광검출기와, 상기 외측의 2개의 4분할 광검출기의 출력으로부터 레디얼 에러를 검출하는 레디얼 에러 검출수단과, 상기 외측의 2개의 4분할 광검출기의 출력으로부터 탄젠셜 에러를 검출하는 탄젠셜 에러 검출수단과, 상기 레디얼 및 탄젠셜 에러를 이용하여 고주파 신호에 포함된 에러를 보정하는 에러 보정수단을 구비한 것을 특징으로 하는 틸트에러 제어장치.
  2. 제1항에 있어서, 상기 에러 보정수단은 사기 고주파신호로부터 상기 레디얼 에러 및 탄젠셜 에러량을 감산하도록 차동-증폭하는 것을 특징으로 틸트에러 제어장치.
    ※참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960020865A 1996-06-12 1996-06-12 틸트 에러 제어장치 KR100198052B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960020865A KR100198052B1 (ko) 1996-06-12 1996-06-12 틸트 에러 제어장치

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960020865A KR100198052B1 (ko) 1996-06-12 1996-06-12 틸트 에러 제어장치

Publications (2)

Publication Number Publication Date
KR980004476A true KR980004476A (ko) 1998-03-30
KR100198052B1 KR100198052B1 (ko) 1999-06-15

Family

ID=19461496

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960020865A KR100198052B1 (ko) 1996-06-12 1996-06-12 틸트 에러 제어장치

Country Status (1)

Country Link
KR (1) KR100198052B1 (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4125458B2 (ja) * 1999-10-28 2008-07-30 松下電器産業株式会社 光ディスク装置
KR20010109838A (ko) * 2000-06-02 2001-12-12 구자홍 광 디스크의 틸트 제어 장치 및 틸트 검출 방법
KR100403084B1 (ko) * 2001-02-20 2003-10-30 엘지전자 주식회사 광 픽업 액츄에이터의 레디얼 틸팅 구동 제어방법

Also Published As

Publication number Publication date
KR100198052B1 (ko) 1999-06-15

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