ATE111628T1 - Laserdioden-regelvorrichtung. - Google Patents

Laserdioden-regelvorrichtung.

Info

Publication number
ATE111628T1
ATE111628T1 AT89908248T AT89908248T ATE111628T1 AT E111628 T1 ATE111628 T1 AT E111628T1 AT 89908248 T AT89908248 T AT 89908248T AT 89908248 T AT89908248 T AT 89908248T AT E111628 T1 ATE111628 T1 AT E111628T1
Authority
AT
Austria
Prior art keywords
laser diode
drive
modulator
comparator
output
Prior art date
Application number
AT89908248T
Other languages
English (en)
Inventor
Yoshimori Yamasaki
Yasunori Terayama
Toshiaki Iimura
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
Application granted granted Critical
Publication of ATE111628T1 publication Critical patent/ATE111628T1/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
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Semiconductor Lasers (AREA)
  • Optical Head (AREA)
  • Led Devices (AREA)
AT89908248T 1988-07-18 1989-07-12 Laserdioden-regelvorrichtung. ATE111628T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63177084A JPH0227533A (ja) 1988-07-18 1988-07-18 レーザダイオード駆動装置

Publications (1)

Publication Number Publication Date
ATE111628T1 true ATE111628T1 (de) 1994-09-15

Family

ID=16024848

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89908248T ATE111628T1 (de) 1988-07-18 1989-07-12 Laserdioden-regelvorrichtung.

Country Status (7)

Country Link
US (1) US5835476A (de)
EP (1) EP0381768B1 (de)
JP (1) JPH0227533A (de)
KR (1) KR0140695B1 (de)
AT (1) ATE111628T1 (de)
DE (1) DE68918262T2 (de)
WO (1) WO1990001206A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP3368908B2 (ja) * 1991-07-24 2003-01-20 松下電器産業株式会社 光磁気ディスク記録再生装置
JPH10247329A (ja) * 1997-03-04 1998-09-14 Toshiba Corp 半導体装置及びこれを含む光ピックアップ光学系ユニット及びこれを含む光ピックアップ装置
KR100494309B1 (ko) * 1997-06-10 2005-08-17 디지털 비디오 시스템스 인코퍼레이션 레이저다이오드자동이상유무확인장치
JPH11144255A (ja) * 1997-11-04 1999-05-28 Sony Corp 光情報再生装置及び光情報再生方法
KR100520038B1 (ko) * 1999-01-14 2005-10-10 엘지전자 주식회사 광 픽업의 레이저 다이오드 제어장치
JP2002100044A (ja) * 2000-09-25 2002-04-05 Sony Corp 光記録装置およびそれにおけるレーザパワー制御方法
US7346086B2 (en) * 2004-04-02 2008-03-18 Videojet Technologies, Inc. Apparatus for monitoring the operating status of a laser
US7612894B2 (en) * 2006-07-18 2009-11-03 Lockheed Martin Corporation Fiber laser for ultrasonic testing

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5687239A (en) * 1979-12-18 1981-07-15 Matsushita Electric Ind Co Ltd Optical recording and reproducing device
JPS60247836A (ja) * 1984-05-22 1985-12-07 Nippon Gakki Seizo Kk 光学式情報再生装置
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
JPS6190539A (ja) * 1984-10-09 1986-05-08 Olympus Optical Co Ltd 光出力安定化装置
JPH0743841B2 (ja) * 1985-06-25 1995-05-15 シャープ株式会社 半導体レ−ザ駆動方法
US4843604A (en) * 1985-10-16 1989-06-27 Sharp Kabushiki Kaisha Beam controller for magneto-optical disc memory system
JP2557830B2 (ja) * 1985-10-16 1996-11-27 シャープ株式会社 光学的記録再生装置における光量制御装置
JPS62286292A (ja) * 1986-06-04 1987-12-12 Matsushita Electric Ind Co Ltd レ−ザダイオ−ド駆動回路
US4811329A (en) * 1986-06-06 1989-03-07 Mitsubishi Denki Kabushiki Kaisha Optical head with laser having particular source of driving current
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
NL8602303A (nl) * 1986-09-12 1988-04-05 Philips Nv Werkwijze voor het in pulsmode aansturen van een halfgeleiderlaser, aanstuurinrichting voor een halfgeleiderlaser en laserschrijfapparaat voorzien van een dergelijke aanstuurinrichting.
JPS63205819A (ja) * 1987-02-20 1988-08-25 Pioneer Electronic Corp 光学式情報記録装置
JPS643818A (en) * 1987-06-25 1989-01-09 Teac Corp Optical recording and reproducing device
JPH06289248A (ja) * 1993-03-31 1994-10-18 Sumitomo Cement Co Ltd 光素子用光ファイバ固定補助具、および固定方法
JP3007242B2 (ja) * 1993-06-04 2000-02-07 有限会社アスプ 雪庇発生防止装置

Also Published As

Publication number Publication date
KR0140695B1 (en) 1998-06-01
DE68918262T2 (de) 1995-05-18
JPH0227533A (ja) 1990-01-30
EP0381768A4 (en) 1992-01-02
DE68918262D1 (de) 1994-10-20
EP0381768A1 (de) 1990-08-16
WO1990001206A1 (en) 1990-02-08
US5835476A (en) 1998-11-10
KR900702516A (ko) 1990-12-07
EP0381768B1 (de) 1994-09-14

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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