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KR870009351A - 3비임 방식 광픽업 회절격자 조정장치 - Google Patents

3비임 방식 광픽업 회절격자 조정장치 Download PDF

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Publication number
KR870009351A
KR870009351A KR1019860002438A KR860002438A KR870009351A KR 870009351 A KR870009351 A KR 870009351A KR 1019860002438 A KR1019860002438 A KR 1019860002438A KR 860002438 A KR860002438 A KR 860002438A KR 870009351 A KR870009351 A KR 870009351A
Authority
KR
South Korea
Prior art keywords
output
diffraction grating
signal
optical pickup
discriminator
Prior art date
Application number
KR1019860002438A
Other languages
English (en)
Other versions
KR900004182B1 (ko
Inventor
고영산
Original Assignee
삼성전자 주식회사
한형수
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 삼성전자 주식회사, 한형수 filed Critical 삼성전자 주식회사
Priority to KR1019860002438A priority Critical patent/KR900004182B1/ko
Priority to US07/031,939 priority patent/US4754129A/en
Priority to JP62076557A priority patent/JPS6316426A/ja
Publication of KR870009351A publication Critical patent/KR870009351A/ko
Application granted granted Critical
Publication of KR900004182B1 publication Critical patent/KR900004182B1/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
    • 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
    • G11B7/0901—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 track following only
    • G11B7/0903—Multi-beam tracking systems
    • 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
    • G11B7/22—Apparatus or processes for the manufacture of optical heads, e.g. assembly

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

내용 없음

Description

3비임 방식 광픽업 회절격자 조정장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 회절 격자 각도에 따른 트래킹 에러의 변화를 나타낸 도표.
제2도는 본 발명에 의한 실시예를 나타낸 블록도.
제5도는 제2도에 도시된 시스템 콘트롤러의 상세 회로도.

Claims (2)

  1. 광픽업(1)에서 출력되는 서브비임 전류로 전압형태로 변환 및 증폭하여 회절 격자 각도를 조정하는 것에 있어서, 상기한 서브 비임 신호에 대하여 잡음을 제거하는 밴드 패스 필터(7)와, 이 필터(7)의 출력에 대하여 위상보상 및 파형 정형하는 지수감쇄 회로부(8)와, 상기한 회로부(8)의 출력에 대한 시간에 따른 변화량 값을 출력하는 미분기(9)와, 이 미분기(9)의 출력 레벨 및 시스템 콘트롤러(3)의 출력신호(S2)에 따라 전력앰프 인에이블 신호(S1) 및 제동신호(S0)를 발생하는 판별기(10)와, 상기한 미분기(9)의 출력을 받아 모터(12)를 구동할 수 있는 레벨로 증폭하는 구동앰프단(11)과, 모터(12)의 회전력을 받아 회절 격자 각도를 조정하는 전달장치(13)등을 포함하여 이루어진 것을 특징으로 하는 3비임 방식 광픽업의 회절 격자 조정 장치.
  2. 제1항에 있어서, 트래킹 에러 최대점 검출시 판별기(10)에서 출력되는 전력 앰프 인에이블 신호(S1)를 시스템 콘트롤러(3)에 인가하며, 시스템콘트롤러(3)에서 출력되는 판별기 구동신호(S2)를 판별기(10)에 입력하여 제동신호(S3)를 발생하고, 회절 격자 조정 완료시 시스템 콘크롤러(3)에서 출력되는 표시부 구동신호(S3)를 표시부(14)에 인가하여 이루어진 것을 특징으로 하는 3비임 방식 광픽업의 회절 격자 조정장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019860002438A 1986-03-31 1986-03-31 3비임 방식 광픽업 회절격자 조정장치 KR900004182B1 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019860002438A KR900004182B1 (ko) 1986-03-31 1986-03-31 3비임 방식 광픽업 회절격자 조정장치
US07/031,939 US4754129A (en) 1986-03-31 1987-03-27 Grating adjustment apparatus of 3-beam type optical pick-up
JP62076557A JPS6316426A (ja) 1986-03-31 1987-03-31 ３ビ−ム方式の光ピックアップ回析格子の調整装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019860002438A KR900004182B1 (ko) 1986-03-31 1986-03-31 3비임 방식 광픽업 회절격자 조정장치

Publications (2)

Publication Number Publication Date
KR870009351A true KR870009351A (ko) 1987-10-26
KR900004182B1 KR900004182B1 (ko) 1990-06-18

Family

ID=19249187

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019860002438A KR900004182B1 (ko) 1986-03-31 1986-03-31 3비임 방식 광픽업 회절격자 조정장치

Country Status (3)

Country Link
US (1) US4754129A (ko)
JP (1) JPS6316426A (ko)
KR (1) KR900004182B1 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2721405B2 (ja) * 1989-09-28 1998-03-04 パイオニア株式会社 トラッキングサーボ装置
JPH0782647B2 (ja) * 1989-11-08 1995-09-06 富士通株式会社 光ディスク装置
DE69227434T2 (de) * 1991-11-22 1999-03-18 Fujitsu Ltd., Kawasaki, Kanagawa Positionsregelsystem
JPH07201050A (ja) * 1993-12-31 1995-08-04 Nippon Conlux Co Ltd 光学的記録再生装置
KR19980029035A (ko) * 1996-10-25 1998-07-15 김영환 위상차 검출법에 의한 트랙킹 에러 생성회로
EP1763875A1 (en) * 2004-06-28 2007-03-21 Koninklijke Philips Electronics N.V. A method for improving robustness of optical disk readout

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4234837A (en) * 1979-01-12 1980-11-18 Mca Discovision, Inc. Digital center tracking system
JPS5897730U (ja) * 1981-12-24 1983-07-02 ヤマハ株式会社 光学式情報記録再生装置における自動焦点装置
JPS58155527A (ja) * 1982-03-10 1983-09-16 Hitachi Ltd 光デイスクプレ−ヤのフオ−カス引き込み回路
EP0098076A1 (en) * 1982-06-14 1984-01-11 Nec Corporation Beam access apparatus for optical disc system
JP2565485B2 (ja) * 1984-09-14 1996-12-18 オリンパス光学工業株式会社 光学的記録再生装置

Also Published As

Publication number Publication date
US4754129A (en) 1988-06-28
JPH05772B2 (ko) 1993-01-06
KR900004182B1 (ko) 1990-06-18
JPS6316426A (ja) 1988-01-23

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