DE69113499D1 - Gerät zur Aufzeichnung und/oder Wiedergabe von Daten auf oder von optischen Platten. - Google Patents

Gerät zur Aufzeichnung und/oder Wiedergabe von Daten auf oder von optischen Platten.

Info

Publication number
DE69113499D1
DE69113499D1 DE69113499T DE69113499T DE69113499D1 DE 69113499 D1 DE69113499 D1 DE 69113499D1 DE 69113499 T DE69113499 T DE 69113499T DE 69113499 T DE69113499 T DE 69113499T DE 69113499 D1 DE69113499 D1 DE 69113499D1
Authority
DE
Germany
Prior art keywords
recording
optical disks
reproducing data
reproducing
data
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69113499T
Other languages
English (en)
Other versions
DE69113499T2 (de
Inventor
Akio Terada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of DE69113499D1 publication Critical patent/DE69113499D1/de
Application granted granted Critical
Publication of DE69113499T2 publication Critical patent/DE69113499T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
DE69113499T 1990-04-05 1991-04-05 Gerät zur Aufzeichnung und/oder Wiedergabe von Daten auf oder von optischen Platten. Expired - Fee Related DE69113499T2 (de)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
DE69113499D1 true DE69113499D1 (de) 1995-11-09
DE69113499T2 DE69113499T2 (de) 1996-03-07

Family

ID=14019311

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69113499T Expired - Fee Related DE69113499T2 (de) 1990-04-05 1991-04-05 Gerät zur Aufzeichnung und/oder Wiedergabe von Daten auf oder von optischen Platten.

Country Status (4)

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

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0586084B1 (de) * 1992-08-04 1998-04-08 Sony Corporation 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
KR100546306B1 (ko) * 2002-11-20 2006-01-26 삼성전자주식회사 광 디스크 판별 방법 및 그 장치
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
US5177726A (en) 1993-01-05
KR910018999A (ko) 1991-11-30
KR100254716B1 (ko) 2000-05-01
EP0450655A1 (de) 1991-10-09
EP0450655B1 (de) 1995-10-04
DE69113499T2 (de) 1996-03-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee