ATE111253T1 - Aufzeichnungs/wiedergabegerät für optische platte. - Google Patents

Aufzeichnungs/wiedergabegerät für optische platte.

Info

Publication number
ATE111253T1
ATE111253T1 AT87904951T AT87904951T ATE111253T1 AT E111253 T1 ATE111253 T1 AT E111253T1 AT 87904951 T AT87904951 T AT 87904951T AT 87904951 T AT87904951 T AT 87904951T AT E111253 T1 ATE111253 T1 AT E111253T1
Authority
AT
Austria
Prior art keywords
regions
laser diode
optical head
data
optical disc
Prior art date
Application number
AT87904951T
Other languages
English (en)
Inventor
Hiroshi Ogawa
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
Priority claimed from JP61180925A external-priority patent/JPH0816994B2/ja
Priority claimed from JP61190274A external-priority patent/JPH083905B2/ja
Application filed by Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of ATE111253T1 publication Critical patent/ATE111253T1/de

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
    • 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
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
AT87904951T 1986-07-31 1987-07-29 Aufzeichnungs/wiedergabegerät für optische platte. ATE111253T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61180925A JPH0816994B2 (ja) 1986-07-31 1986-07-31 ディスク記録装置
JP61190274A JPH083905B2 (ja) 1986-08-13 1986-08-13 レ−ザダイオ−ドの自動出力制御回路

Publications (1)

Publication Number Publication Date
ATE111253T1 true ATE111253T1 (de) 1994-09-15

Family

ID=26500278

Family Applications (1)

Application Number Title Priority Date Filing Date
AT87904951T ATE111253T1 (de) 1986-07-31 1987-07-29 Aufzeichnungs/wiedergabegerät für optische platte.

Country Status (6)

Country Link
US (1) US5042022A (de)
EP (1) EP0276326B1 (de)
KR (1) KR950010334B1 (de)
AT (1) ATE111253T1 (de)
DE (1) DE3750507T2 (de)
WO (1) WO1988001092A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2669532B2 (ja) * 1988-05-20 1997-10-29 株式会社日立製作所 光ディスク装置
JPH02130727A (ja) * 1988-11-10 1990-05-18 Sony Corp ディスク状記録媒体
JPH077509B2 (ja) * 1989-02-20 1995-01-30 オムロン株式会社 ２光源方式光学的記録再生装置
ATE122172T1 (de) * 1989-02-22 1995-05-15 Omron Tateisi Electronics Co Optisches aufzeichnungs- und wiedergabegerät.
US5276667A (en) * 1989-02-22 1994-01-04 Omron Corporation Optical recording and reproducing apparatus for synchronizing recording on subsequent unrecorded sectors
JP2698784B2 (ja) * 1989-07-21 1998-01-19 シャープ株式会社 情報記録再生装置
US5426674A (en) * 1990-02-06 1995-06-20 Nemirovsky; Paul Method and computer system for selecting and evaluating data routes and arranging a distributed data communication network
JPH0497816A (ja) * 1990-08-16 1992-03-30 Omron Corp 成形機のコントローラ
US5729511A (en) * 1991-02-15 1998-03-17 Discovision Associates Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
US5809282A (en) * 1995-06-07 1998-09-15 Grc International, Inc. Automated network simulation and optimization system
JP3048945B2 (ja) * 1996-05-24 2000-06-05 三洋電機株式会社 情報記録再生装置
KR19990016023A (ko) * 1997-08-12 1999-03-05 윤종용 레이저 다이오드 광출력 제어방법 및 장치
US6269060B1 (en) * 1999-09-09 2001-07-31 Ian E. Harvey Programmable write signal generator
JP2002063726A (ja) * 2000-06-05 2002-02-28 Nippon Precision Circuits Inc 光ディスク再生装置のレーザーダイオード制御方法およびその回路
US7558165B2 (en) * 2004-05-07 2009-07-07 Samsung Electronics Co., Ltd. Disc drive calibration with forced track traversing signal

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616950A (en) * 1979-07-19 1981-02-18 Mitsubishi Electric Corp Optical information read-in unit
JPS57181429A (en) * 1981-05-01 1982-11-08 Toshiba Corp Optical disc device
JPS5814333A (ja) * 1981-07-17 1983-01-27 Matsushita Electric Ind Co Ltd 光デイスクの記録方法
JPS58143333A (ja) * 1982-02-19 1983-08-25 Dainippon Screen Mfg Co Ltd 多面焼付機
JPS58153239A (ja) * 1982-03-05 1983-09-12 Nec Corp 光ピツクアツプ装置
JPS5945646A (ja) * 1982-09-07 1984-03-14 Hitachi Ltd 光学的情報再生装置
GB8330101D0 (en) * 1983-11-11 1983-12-21 Combined Tech Corp Plc Optical data storage
JPS60239929A (ja) * 1984-05-15 1985-11-28 Matsushita Electric Ind Co Ltd 光学的記録再生装置
JPH0619863B2 (ja) * 1984-06-13 1994-03-16 株式会社日立製作所 光磁気情報記憶方法及び装置
JP2619850B2 (ja) * 1984-07-10 1997-06-11 松下電器産業株式会社 情報記録媒体
JPH0821173B2 (ja) * 1984-07-27 1996-03-04 松下電器産業株式会社 半導体レ−ザ駆動回路
JPS6163930A (ja) * 1984-09-04 1986-04-02 Matsushita Electric Ind Co Ltd 円盤状記録担体及び円盤状記録担体のアドレス信号再生装置
JPS61190472A (ja) * 1985-02-08 1986-08-25 株式会社日立製作所 ストツパ付きマガジン
JPH0721895B2 (ja) * 1985-02-19 1995-03-08 日本電気株式会社 光磁気記録方法
EP0196590B1 (de) * 1985-03-27 1992-05-20 Sony Corporation Signalaufnahme- und -wiedergabegerät für eine optomagnetische Platte
DE3679233D1 (de) * 1985-05-21 1991-06-20 Celanese Corp Verfahren zum loeschen von optischen informationsmedien.
US4685097A (en) * 1985-07-25 1987-08-04 Laser Magnetic Storage International Company Power control system for a semiconductor laser
JP2528821B2 (ja) * 1985-11-20 1996-08-28 株式会社日立製作所 光情報処理装置
EP0228646A3 (en) * 1985-12-20 1987-10-14 Hitachi, Ltd. A signal processing apparatus for disc memory devices
JP2574752B2 (ja) * 1986-01-22 1997-01-22 株式会社日立製作所 情報記録媒体および記録再生方法
JPH07111782B2 (ja) * 1986-08-13 1995-11-29 ソニー株式会社 光デイスクの記録再生装置
JPH06122450A (ja) * 1992-10-08 1994-05-06 Dainippon Ink & Chem Inc 合成樹脂製四方差しパレット

Also Published As

Publication number Publication date
EP0276326B1 (de) 1994-09-07
EP0276326A4 (de) 1989-09-11
KR950010334B1 (ko) 1995-09-14
KR880701941A (ko) 1988-11-07
DE3750507D1 (de) 1994-10-13
US5042022A (en) 1991-08-20
WO1988001092A1 (en) 1988-02-11
DE3750507T2 (de) 1995-01-12
EP0276326A1 (de) 1988-08-03

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee