KR840005586A - 정보 판독장치의 포우커스 서어보장치 - Google Patents

정보 판독장치의 포우커스 서어보장치 Download PDF

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Publication number
KR840005586A
KR840005586A KR1019830003029A KR830003029A KR840005586A KR 840005586 A KR840005586 A KR 840005586A KR 1019830003029 A KR1019830003029 A KR 1019830003029A KR 830003029 A KR830003029 A KR 830003029A KR 840005586 A KR840005586 A KR 840005586A
Authority
KR
South Korea
Prior art keywords
focus
focus servo
servo device
compensation circuit
ground compensation
Prior art date
Application number
KR1019830003029A
Other languages
English (en)
Other versions
KR870000599B1 (ko
Inventor
류우이찌(외 2) 나이또오
Original Assignee
마쓰모도 세이야
파이오니아 가부시끼가이샤
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 마쓰모도 세이야, 파이오니아 가부시끼가이샤 filed Critical 마쓰모도 세이야
Publication of KR840005586A publication Critical patent/KR840005586A/ko
Application granted granted Critical
Publication of KR870000599B1 publication Critical patent/KR870000599B1/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
    • 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
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
    • 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

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

내용 없음

Description

정보 판독장치의 포우커스 서어보장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 종래의 포우커스 서어보장치의 개략 블록도.
제2도는 접속 액튜에이터의 개략 구성도.
제3도는 접속 액튜에이터의 특성도.
제4도는 제1도의 진상(進相)보상회로의 예를 표시한 도.
제5도는 제4도의 회로의 특성도.
제6도는 제1도의 장치의 루우프 특성을 표시한 도.
제7도는 본 발명의 실시예의 개략 블록도.
제8도는 제7도의 지상(遲相)보상회로의 예를 표시한 도.
제9도는 제8도의 회로의 특성도.
제10도는 제7도의 장치의 루우프 특성을 표시한 도.
제11도는 제10도의 지상보상 회로의 다른 예를 표시한 회로도.
제12도는 제7도의 지상 및 진상 위상보상회로의 예를 표시한 도.
* 도면의 주요부분에 대한 부호의 설명
4 : 구동코일 5 : 접속렌즈
9 : 지상보상회로 OP1: 연산증폭기
7 : 스프링 1 : 포우커스에러신호발생기

Claims (4)

  1. 정보검출용 스포트광을 기록면상에 항상 접속시키고져 접속렌즈의 이동을 제어하고 또한 탄성재에 지지된 접속액튜에이터를 지닌 포우커스 서어보장치로서, 이 포우커스어어보 투우프의 직류이득을 무한대로 한 것을 특징으로 하는 정보판독장치의 포우커스서어보 장치.
  2. 제1항에 있어서 상기 포우커스서어보루우프는 지상보상회로를 지니고 이 지상보상회로의 직류이득을 무한대로 한 것을 특징으로 하는 정보판독장치의 포우커스서어보장치.
  3. 제2항에 있어서, 상기 지상보상회로는 연산증폭기를 구성요소로 지닌 것을 특징으로 하는 정보판독장치의 포우커스서어보장치.
  4. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019830003029A 1982-07-24 1983-07-02 정보 판독장치의 포우커스 서어보장치 KR870000599B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP57129136A JPH0677326B2 (ja) 1982-07-24 1982-07-24 情報読取装置のフォ−カスサ−ボ装置
JP57-129136 1982-07-24
JP129136 1982-07-24

Publications (2)

Publication Number Publication Date
KR840005586A true KR840005586A (ko) 1984-11-14
KR870000599B1 KR870000599B1 (ko) 1987-03-23

Family

ID=15002000

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019830003029A KR870000599B1 (ko) 1982-07-24 1983-07-02 정보 판독장치의 포우커스 서어보장치

Country Status (3)

Country Link
US (1) US4637005A (ko)
JP (1) JPH0677326B2 (ko)
KR (1) KR870000599B1 (ko)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62145302A (ja) * 1985-12-20 1987-06-29 Canon Inc 移動体の停止位置決め制御装置
JPS63271729A (ja) * 1987-04-30 1988-11-09 Matsushita Electric Ind Co Ltd 光学式デイスクプレ−ヤのフオ−カスサ−ボ回路
JP2518907B2 (ja) * 1988-10-31 1996-07-31 パイオニア株式会社 光ディスクプレ―ヤのチルトサ―ボ装置
US5436880A (en) * 1994-01-10 1995-07-25 Eastman Kodak Company Laser power control in an optical recording system using partial correction of reflected signal error
JP4072731B2 (ja) * 2004-04-05 2008-04-09 船井電機株式会社 光ディスク記録再生装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2027881B (en) * 1978-07-19 1983-04-27 Universal Pioneer Corp In-focus detecting device
JPS5738008A (en) * 1980-08-19 1982-03-02 Hitachi Ltd Output amplifier
JPS57113428A (en) * 1980-12-29 1982-07-14 Pioneer Video Corp Focus servo device
JPS57186239A (en) * 1981-05-11 1982-11-16 Sony Corp Disc reproducing device
US4446546A (en) * 1981-12-31 1984-05-01 Magnetic Peripherals Inc. Focus initialization system for optical recording

Also Published As

Publication number Publication date
JPS5919244A (ja) 1984-01-31
US4637005A (en) 1987-01-13
KR870000599B1 (ko) 1987-03-23
JPH0677326B2 (ja) 1994-09-28

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