KR850003033A - 광학적 신호 처리장치 - Google Patents

광학적 신호 처리장치 Download PDF

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Publication number
KR850003033A
KR850003033A KR1019840006561A KR840006561A KR850003033A KR 850003033 A KR850003033 A KR 850003033A KR 1019840006561 A KR1019840006561 A KR 1019840006561A KR 840006561 A KR840006561 A KR 840006561A KR 850003033 A KR850003033 A KR 850003033A
Authority
KR
South Korea
Prior art keywords
signal processing
optical signal
signal
processing device
recording medium
Prior art date
Application number
KR1019840006561A
Other languages
English (en)
Inventor
테즈오 사도우
Original Assignee
미쓰다 가쓰시게
가부시기가이샤 히다찌세이사꾸쇼
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 미쓰다 가쓰시게, 가부시기가이샤 히다찌세이사꾸쇼 filed Critical 미쓰다 가쓰시게
Publication of KR850003033A publication Critical patent/KR850003033A/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
    • G11B7/0946—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 operation during external perturbations not related to the carrier or servo beam, e.g. vibration
    • 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
    • G11B7/08—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
    • G11B7/0909—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 by astigmatic methods
    • 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
    • G11B7/0948—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 detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts

Abstract

내용 없음

Description

광학적 신호 처리장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 하나의 실시예를 표시한 콤팩트 디스크 플레이어의 블록 회로도. 제5a도, 제5b도, 제5c도는 트랙킹 써보를 하기 위한 광학계통의 하나의 예를 표시하는 사시도. 제6도는 본 발명을 적용한 포커스 써보와 트랙킹 써보 계통의 회로 구성을 표시하는 블록회로도.

Claims (5)

  1. (1) 광원(S)와, (2) 정보가 기록된 기록 매체의 표면위에 조사되는 상기 광원으로 부터의 빛을 포커싱하고, 또, 그 빛의 조사 위치를 제어하기 위한 제어 기구(4)와, 그리고, (3) 주위의 진동에 비례하는 신호를 발생하는 신호발생 회로(51. 52. 53)에 의하여 구성되고 상기 신호발생 회로로부터 발생된 상기 신호에 의하여, 상기 제어기구의 제어감도가 제어되는 것을 특징으로 하는 광학적 신호처리 장치.
  2. (4)상기 기록 매체의 표면위에 기록된 정보를 상기 신호로 변환하기 위한 픽업(3)과, (5)상기 픽업(3)의 상기 전기 신호로부터 재생신호로 변환하기 위한 신호 처리회로(5,6,7,8a,9b)를 더 포함하는 것을 특징으로 하는 특허청구의 범위 제1항 기재의 광학적 신호 처리 장치.
  3. 상기 기록 매체의 표면위에 기록된 정보는 디지탈 정보이고, 상기 신호처리회로는 디지탈 신호 처리부와 D-A변환기를 포함하는 것을 특징으로 하는 특허청구의 범위 제2항 기재의 광학적 신호처리장치.
  4. 상기 제어 기구는 상기 기록 매체의 표면위의 포커스와 조사 위치에 관해서 피드 백에 의한 써보 동작을 수행하고 주위의 진동이 클 경우에는 상기 신호 발생회로로부터 얻어진 상기 신호는 상기 써보 제어동작에 관한 제어 감도가 높아지게끔 작용하는 것을 특징으로 하는 특허청구의 범위 제3항 기재의 광학적 신호 처리장치.
  5. 상기 광학적 신호 처리장치를 탑재한 수송기기의 진동을 상기 신호발행회로가 검출하는 것을 특징으로 하는 특허청구의 범위 제4항 기재의 광학적 신호처리장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019840006561A 1983-10-31 1984-10-22 광학적 신호 처리장치 KR850003033A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP58-202596 1983-10-31
JP58202596A JPS6095733A (ja) 1983-10-31 1983-10-31 光学的信号処理装置

Publications (1)

Publication Number Publication Date
KR850003033A true KR850003033A (ko) 1985-05-28

Family

ID=16460087

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019840006561A KR850003033A (ko) 1983-10-31 1984-10-22 광학적 신호 처리장치

Country Status (3)

Country Link
US (1) US4614863A (ko)
JP (1) JPS6095733A (ko)
KR (1) KR850003033A (ko)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
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JPS59154677A (ja) * 1983-02-22 1984-09-03 Matsushita Electric Ind Co Ltd トラツキング制御装置
JPS613359A (ja) * 1984-06-15 1986-01-09 Matsushita Electric Ind Co Ltd 光学式記録再生装置
JPS61250849A (ja) * 1985-04-30 1986-11-07 Olympus Optical Co Ltd 光学的情報記録再生装置
US4764860A (en) * 1985-06-26 1988-08-16 Nippon Gakki Seizo Kabushiki Kaisha Servo circuit for an information recording and/or reproducing apparatus
JPS629537A (ja) * 1985-07-08 1987-01-17 Pioneer Electronic Corp 光学式ピツクアツプ装置
US4701603A (en) * 1985-10-17 1987-10-20 Optical Disc Corporation Focus control system for optical information recorder or player
DE3640660A1 (de) * 1985-11-28 1987-06-04 Toshiba Kk Vorrichtung zur bestimmung der stellung eines objektivs
US4864552A (en) * 1986-08-29 1989-09-05 Laser Magnetic Storage International Company Driving signal for coarse servo employing sampled offset signal
JPH0827961B2 (ja) * 1987-11-11 1996-03-21 日本電気ホームエレクトロニクス株式会社 ホログラム式光ヘッドの光検出器
JP2735220B2 (ja) * 1987-12-02 1998-04-02 株式会社日立製作所 非点収差を有する光束を用いた焦点ずれ検出方法及び光ディスク装置
JPH0677332B2 (ja) * 1988-05-31 1994-09-28 株式会社三協精機製作所 光ピックアップ
US5291466A (en) * 1989-03-22 1994-03-01 Goldstar Co., Ltd. Automatic control system for a tracking servo unbalance of optical disk player
JPH03181024A (ja) * 1989-12-07 1991-08-07 Sony Corp 光学式ディスク装置
GB2248989B (en) * 1990-10-15 1995-05-24 Applied Magnetics Corp Focus sensing apparatus and method
US5245174A (en) * 1990-10-15 1993-09-14 Applied Magnetics Corporation Focus sensing apparatus utilizing a reflecting surface having variable reflectivity
DE4241379B4 (de) * 1992-12-09 2006-01-05 Deutsche Thomson-Brandt Gmbh Betriebsmodusumschaltung transportabler Geräte
DE19642343C2 (de) * 1996-10-14 1999-06-10 Bosch Gmbh Robert Verfahren zum Regeln der Fokussierung und der Führung eines Lichtstrahls
DE10122601C2 (de) * 2001-05-10 2003-03-27 Grundig Ag Verfahren und Vorrichtung für optische Datenerfassung
KR100425460B1 (ko) * 2001-08-29 2004-03-30 삼성전자주식회사 진동량 측정 장치 및 방법 그리고 루프 설계 방법
KR100457140B1 (ko) * 2002-03-16 2004-11-16 주식회사 레인콤 디스크 서보 제어 장치 및 방법
US7525898B2 (en) * 2003-10-28 2009-04-28 Panasonic Corporation Information playback apparatus, in-line circuit, and method for implementing in-line circuit on information playback apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS626580Y2 (ko) * 1979-11-17 1987-02-16
JPS57113428A (en) * 1980-12-29 1982-07-14 Pioneer Video Corp Focus servo device

Also Published As

Publication number Publication date
US4614863A (en) 1986-09-30
JPS6095733A (ja) 1985-05-29

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