DE3688276T2 - Steuervorrichtung des buendels fuer magnetooptisches plattenspeichersystem. - Google Patents

Steuervorrichtung des buendels fuer magnetooptisches plattenspeichersystem.

Info

Publication number
DE3688276T2
DE3688276T2 DE8686114312T DE3688276T DE3688276T2 DE 3688276 T2 DE3688276 T2 DE 3688276T2 DE 8686114312 T DE8686114312 T DE 8686114312T DE 3688276 T DE3688276 T DE 3688276T DE 3688276 T2 DE3688276 T2 DE 3688276T2
Authority
DE
Germany
Prior art keywords
magneto
bundle
control device
optical disk
storage system
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
DE8686114312T
Other languages
English (en)
Other versions
DE3688276D1 (de
Inventor
Tsuneo Fujiwara
Hiroshi Fuji
Takashi Iwaki
Daiya Haitsu Gakuenmae Deguchi
Shozou Kobayashi
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.)
Sharp Corp
Original Assignee
Sharp 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
Priority claimed from JP60230544A external-priority patent/JP2557830B2/ja
Priority claimed from JP60270476A external-priority patent/JPS62129943A/ja
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of DE3688276D1 publication Critical patent/DE3688276D1/de
Application granted granted Critical
Publication of DE3688276T2 publication Critical patent/DE3688276T2/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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • 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
    • G11B11/10532—Heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Semiconductor Lasers (AREA)
DE8686114312T 1985-10-16 1986-10-16 Steuervorrichtung des buendels fuer magnetooptisches plattenspeichersystem. Expired - Fee Related DE3688276T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60230544A JP2557830B2 (ja) 1985-10-16 1985-10-16 光学的記録再生装置における光量制御装置
JP60270476A JPS62129943A (ja) 1985-11-30 1985-11-30 サンプルホ−ルド回路

Publications (2)

Publication Number Publication Date
DE3688276D1 DE3688276D1 (de) 1993-05-19
DE3688276T2 true DE3688276T2 (de) 1993-07-29

Family

ID=26529403

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686114312T Expired - Fee Related DE3688276T2 (de) 1985-10-16 1986-10-16 Steuervorrichtung des buendels fuer magnetooptisches plattenspeichersystem.

Country Status (3)

Country Link
US (2) US4843604A (de)
EP (1) EP0219124B1 (de)
DE (1) DE3688276T2 (de)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4906874A (en) * 1988-01-22 1990-03-06 Sharp Kabushiki Kaisha Analog signal switching device for use in an optical memory
US5101385A (en) * 1988-03-14 1992-03-31 Bernoulli Optical Systems Company Magneto-optical information storage system for flexible media having maximum overwrite efficiency
GB2216710B (en) * 1988-03-14 1992-09-02 Ici Plc Optical or magneto-optical data system
JPH0227533A (ja) * 1988-07-18 1990-01-30 Sony Corp レーザダイオード駆動装置
JPH0296622U (de) * 1989-01-18 1990-08-01
JPH0316038A (ja) * 1989-06-13 1991-01-24 Teac Corp 情報記録再生装置
JP2775009B2 (ja) * 1989-06-20 1998-07-09 ソニー株式会社 光記録装置
JPH0330130A (ja) * 1989-06-28 1991-02-08 Sharp Corp 半導体レーザ駆動回路
US5185734A (en) * 1990-07-20 1993-02-09 International Business Machines Corporation Calibrating and power-protecting laser drive circuits
US5136569A (en) * 1990-09-28 1992-08-04 International Business Machines Corporation Optical disk recorder for diverse media types and having a predetermined initialization or start-up procedure
JP2838908B2 (ja) * 1990-10-19 1998-12-16 キヤノン株式会社 光磁気記録方法
JPH04170753A (ja) * 1990-11-05 1992-06-18 Olympus Optical Co Ltd 光学的情報処理装置
JP3407893B2 (ja) * 1991-05-27 2003-05-19 パイオニア株式会社 半導体レーザ制御装置
JP2850966B2 (ja) * 1991-08-02 1999-01-27 シャープ株式会社 光磁気記録装置
US5345435A (en) * 1991-08-30 1994-09-06 Sony Corporation Optical disc and method for recording on optical disc
DE69322593T2 (de) * 1992-10-20 1999-06-24 Nikon Corp Verfahren und Vorrichtung zur optischen Aufzeichnung
JP3259204B2 (ja) * 1992-10-21 2002-02-25 株式会社ニコン 光記録方法及び光記録のパルストレイン条件決定方法
US5648952A (en) * 1994-09-28 1997-07-15 Ricoh Company, Ltd. Phase-change optical disc recording method and apparatus, and information recording apparatus and recording pre-compensation method
JP3795652B2 (ja) * 1997-12-19 2006-07-12 株式会社リコー 光ディスク駆動装置のレーザパワー制御装置
JP4068752B2 (ja) * 1999-03-02 2008-03-26 シャープ株式会社 光ディスク装置
US20030048821A1 (en) * 2000-10-13 2003-03-13 Shinichiro Iimura Current generating circuit and method
US20030003464A1 (en) * 2000-11-27 2003-01-02 Phan Brigitte C. Dual bead assays including optical biodiscs and methods relating thereto
US20040248093A1 (en) * 2000-11-27 2004-12-09 Coombs James Howard Magneto-optical bio-discs and systems including related methods
US20020172980A1 (en) * 2000-11-27 2002-11-21 Phan Brigitte Chau Methods for decreasing non-specific binding of beads in dual bead assays including related optical biodiscs and disc drive systems
KR100393213B1 (ko) * 2001-02-07 2003-07-31 삼성전자주식회사 디스크 드라이브의 자동 파워 제어 장치
JP3700602B2 (ja) * 2001-03-30 2005-09-28 ヤマハ株式会社 レーザ駆動装置
KR20040030950A (ko) * 2001-08-10 2004-04-09 코닌클리케 필립스 일렉트로닉스 엔.브이. 광학주사장치
TWI226625B (en) * 2002-09-13 2005-01-11 Mediatek Inc Method for controlling output power of a pick-up head using automatic power control loop
JP4019280B2 (ja) * 2003-10-30 2007-12-12 ソニー株式会社 光ディスク装置
KR20070073855A (ko) * 2004-10-05 2007-07-10 코닌클리케 필립스 일렉트로닉스 엔.브이. 광 픽업의 신호용 피드백 제어 루프를 구비한 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
JP2016035794A (ja) * 2014-08-01 2016-03-17 株式会社東芝 磁気ディスク装置、プリアンプ、及び制御方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1101633B (it) * 1977-11-29 1985-10-07 Exxon Research Engineering Co Plastificazione di polimero elastomerico solfonato neutralizzato
JPS56137598A (en) * 1980-03-27 1981-10-27 Victor Co Of Japan Ltd Sample hold circuit
JPS5894143A (ja) * 1981-12-01 1983-06-04 Matsushita Electric Ind Co Ltd 光学的記録再生装置
US4651034A (en) * 1982-11-26 1987-03-17 Mitsubishi Denki Kabushiki Kaisha Analog input circuit with combination sample and hold and filter
JPS59119547A (ja) * 1982-12-27 1984-07-10 Hitachi Ltd 光デイスク装置の半導体レ−ザ駆動装置
JPS59146457A (ja) * 1983-02-10 1984-08-22 Olympus Optical Co Ltd 光出力自動制御装置
JPS6032145A (ja) * 1983-08-01 1985-02-19 Ricoh Co Ltd 半導体レ−ザ駆動回路
JPS60171646A (ja) * 1984-02-15 1985-09-05 Fujitsu Ltd 光デイスク装置用半導体レ−ザ駆動回路
JPS61117735A (ja) * 1984-11-14 1986-06-05 Hitachi Ltd 光学的記録再生装置

Also Published As

Publication number Publication date
EP0219124B1 (de) 1993-04-14
EP0219124A3 (en) 1990-05-30
US4935915A (en) 1990-06-19
US4843604A (en) 1989-06-27
DE3688276D1 (de) 1993-05-19
EP0219124A2 (de) 1987-04-22

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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