KR910018999A - 광학식 디스크상의 구동장치 - Google Patents

광학식 디스크상의 구동장치 Download PDF

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Publication number
KR910018999A
KR910018999A KR1019910005345A KR910005345A KR910018999A KR 910018999 A KR910018999 A KR 910018999A KR 1019910005345 A KR1019910005345 A KR 1019910005345A KR 910005345 A KR910005345 A KR 910005345A KR 910018999 A KR910018999 A KR 910018999A
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KR
South Korea
Prior art keywords
optical
optical disc
optical head
track
focus error
Prior art date
Application number
KR1019910005345A
Other languages
English (en)
Other versions
KR100254716B1 (ko
Inventor
아끼오 데라다
Original Assignee
오오가 노리오
소니 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.)
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Publication date
Application filed by 오오가 노리오, 소니 가부시끼가이샤 filed Critical 오오가 노리오
Publication of KR910018999A publication Critical patent/KR910018999A/ko
Application granted granted Critical
Publication of KR100254716B1 publication Critical patent/KR100254716B1/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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • 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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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
    • G11B7/0943—Methods and circuits for performing mathematical operations on individual detector segment outputs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • G11B11/10578—Servo format, e.g. prepits, guide tracks, pilot signals
    • 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
    • G11B7/0912—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 push-pull method

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  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

내용 없음

Description

광학식 디스크의 구동장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 한 실시예를 도시하는 블럭선도, 제2도는 광학 헤드의 예를 도시하는 도면, 제3도는 광검출기의 예를 도시하는 도면.

Claims (1)

  1. 트래킹용 광학적 기록흔적이 트랙을 따라서 그 양측에 교대로 소정간격으로써 형성된 광학식 디스크의 구동장치에 있어서, 광학 헤드로부터의 집속 빔의 상기 광학식 디스크상에서의 촛점합 상태로부터의 어긋남을 도시하는 촛점 오류 신호를 검출하는 촛점 오류 검출수단과, 상기 트랙의 양측의 상기 트래킹용 광학적 기록흔적의 상기 광학 헤드에 의한 재생신호 파형의 피크값의 평균값을 산출하는 연산수단을 가지며, 상기 촛점 오류 검출수단에서의 평균값의 절대값이 최대로 되는 바이어스를 가산하고, 그 가산출력에 의해서 상기 광학 헤드의 대물렌즈를 그 광축방향으로 이동시키는 작동기를 제어토록 한 것을 특징으로 하는 광학식 디스크의 구동장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910005345A 1990-04-05 1991-04-03 광학식 디스크상의 정보기록 및 재생장치 KR100254716B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9118290 1990-04-05
JP91182 1990-04-05

Publications (2)

Publication Number Publication Date
KR910018999A true KR910018999A (ko) 1991-11-30
KR100254716B1 KR100254716B1 (ko) 2000-05-01

Family

ID=14019311

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910005345A KR100254716B1 (ko) 1990-04-05 1991-04-03 광학식 디스크상의 정보기록 및 재생장치

Country Status (4)

Country Link
US (1) US5177726A (ko)
EP (1) EP0450655B1 (ko)
KR (1) KR100254716B1 (ko)
DE (1) DE69113499T2 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100546306B1 (ko) * 2002-11-20 2006-01-26 삼성전자주식회사 광 디스크 판별 방법 및 그 장치

Families Citing this family (12)

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DE4032871A1 (de) * 1990-10-17 1992-04-23 Bosch Gmbh Robert Schaltungsanordnung zur abtastung optischer aufzeichnungstraeger
US5331615A (en) * 1991-05-11 1994-07-19 Matsushita Electric Industrial Co., Ltd. Tracking control apparatus for an optical disk device
DE69317831T2 (de) * 1992-08-04 1998-08-06 Sony Corp Wiedergabegerät
JPH06111345A (ja) * 1992-09-29 1994-04-22 Matsushita Electric Ind Co Ltd 光ヘッド制御装置
KR950012355A (ko) * 1993-10-18 1995-05-16 전인환 자기광학 디스크 드라이브용 포커스 및 트래킹 에러 검출시스템
US5561655A (en) * 1994-12-02 1996-10-01 Eastman Kodak Company Apparatus and method for differential tracking in a magneto-optic data storage system using mark edge detection
JP3599440B2 (ja) * 1994-12-05 2004-12-08 キヤノン株式会社 情報処理装置の探針位置制御機構および探針位置制御方法、情報処理装置
JPH097178A (ja) * 1995-06-15 1997-01-10 Nikon Corp 光ディスクの再生方法、再生装置及び光ディスク
JP3968495B2 (ja) * 1999-09-16 2007-08-29 ソニー株式会社 光記録媒体駆動装置、フォーカス設定値補正方法、並びに光記録媒体
JP3765235B2 (ja) * 2001-02-16 2006-04-12 日本電気株式会社 光ディスク装置
JP2006185481A (ja) 2004-12-27 2006-07-13 Toshiba Corp 光ディスク記録再生装置およびオフセット補正方法
US8270266B2 (en) * 2008-04-17 2012-09-18 Mediatek Inc. Methods and devices for detecting wobbles on an optical disc

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US4779253A (en) * 1985-07-30 1988-10-18 Laser Magnetic Storage International Company Sampled servo for an optical disk drive
US4701603A (en) * 1985-10-17 1987-10-20 Optical Disc Corporation Focus control system for optical information recorder or player
US4866688A (en) * 1985-12-20 1989-09-12 Hitachi, Ltd. Composite tracking servo system for optical disc apparatus with track offset correction
US4860271A (en) * 1987-03-13 1989-08-22 Pioneer Electronic Corporation Servo circuit for generating a tracking error signal for optical disk player
JP2619381B2 (ja) * 1987-03-20 1997-06-11 株式会社日立製作所 光学的情報再生装置
JPS6425320A (en) * 1987-07-22 1989-01-27 Sony Corp Optical disk high density recording and reproducing system
US5031166A (en) * 1988-01-25 1991-07-09 Laser Magnetic Storage International Company Optical disk tracking and seeking systems and specific track formats using discontinuities and circuitry therefor
JPH01204234A (ja) * 1988-02-08 1989-08-16 Canon Inc 光学的情報記録再生装置
DE3824039A1 (de) * 1988-07-15 1990-01-18 Thomson Brandt Gmbh Verfahren und schaltungsanordnung zur kompensation von offset-spannungen in einem fokus- und/oder spurregelkreis
US5097458A (en) * 1989-05-29 1992-03-17 Ricoh Company, Ltd. Servo control system for optical disk device
US5113384A (en) * 1989-09-25 1992-05-12 Hewlett-Packard Company Focus capture method for magneto-optic disk drives

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100546306B1 (ko) * 2002-11-20 2006-01-26 삼성전자주식회사 광 디스크 판별 방법 및 그 장치

Also Published As

Publication number Publication date
DE69113499T2 (de) 1996-03-07
DE69113499D1 (de) 1995-11-09
KR100254716B1 (ko) 2000-05-01
EP0450655B1 (en) 1995-10-04
US5177726A (en) 1993-01-05
EP0450655A1 (en) 1991-10-09

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