DE69023572D1 - Energieversorgungskreis für Laserdiode in optischem Speichergerät. - Google Patents

Energieversorgungskreis für Laserdiode in optischem Speichergerät.

Info

Publication number
DE69023572D1
DE69023572D1 DE69023572T DE69023572T DE69023572D1 DE 69023572 D1 DE69023572 D1 DE 69023572D1 DE 69023572 T DE69023572 T DE 69023572T DE 69023572 T DE69023572 T DE 69023572T DE 69023572 D1 DE69023572 D1 DE 69023572D1
Authority
DE
Germany
Prior art keywords
power supply
storage device
supply circuit
laser diode
optical storage
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
DE69023572T
Other languages
English (en)
Other versions
DE69023572T2 (de
Inventor
Akira Minami
Shigenori Yanagi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 JP1205435A external-priority patent/JP2532283B2/ja
Priority claimed from JP1224249A external-priority patent/JP2505591B2/ja
Priority claimed from JP1224248A external-priority patent/JPH0816986B2/ja
Priority claimed from JP1228992A external-priority patent/JP2505592B2/ja
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE69023572D1 publication Critical patent/DE69023572D1/de
Publication of DE69023572T2 publication Critical patent/DE69023572T2/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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Semiconductor Lasers (AREA)
DE69023572T 1989-08-08 1990-08-08 Energieversorgungskreis für Laserdiode in optischem Speichergerät. Expired - Fee Related DE69023572T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1205435A JP2532283B2 (ja) 1989-08-08 1989-08-08 レ―ザ・ダイオ―ドの制御方式
JP1224249A JP2505591B2 (ja) 1989-08-30 1989-08-30 光学記憶装置のレ―ザダイオ―ド駆動回路
JP1224248A JPH0816986B2 (ja) 1989-08-30 1989-08-30 光学記憶装置のレーザダイオード駆動回路
JP1228992A JP2505592B2 (ja) 1989-09-04 1989-09-04 光学記憶装置のレ―ザダイオ―ド駆動回路

Publications (2)

Publication Number Publication Date
DE69023572D1 true DE69023572D1 (de) 1995-12-21
DE69023572T2 DE69023572T2 (de) 1996-03-28

Family

ID=27476257

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69023572T Expired - Fee Related DE69023572T2 (de) 1989-08-08 1990-08-08 Energieversorgungskreis für Laserdiode in optischem Speichergerät.

Country Status (3)

Country Link
US (1) US5175722A (de)
EP (1) EP0412800B1 (de)
DE (1) DE69023572T2 (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5398008A (en) * 1992-08-17 1995-03-14 Alcatel N.V. Circuit arrangement for amplitude-modulating the drive signal of a laser
JPH07141677A (ja) * 1993-11-18 1995-06-02 Olympus Optical Co Ltd 半導体レーザの駆動装置
US5604757A (en) * 1994-05-10 1997-02-18 E-Tek Dynamics, Inc. Multichannel, programmable laser diode power supply, stabilizer and controller
DE19655191C2 (de) * 1995-03-31 2002-10-31 Mitsubishi Chem Corp Optisches Aufzeichnungsmedium
DE19655251B4 (de) * 1995-03-31 2004-04-29 Mitsubishi Chemical Corp. Optisches Aufzeichnungsverfahren und optisches Aufzeichnungsmedium
JP2856247B2 (ja) * 1996-11-12 1999-02-10 日本電気株式会社 消光比劣化を防止するａｐｃ方式
DE19711634A1 (de) * 1997-03-20 1998-09-24 Thomson Brandt Gmbh Abspiel- und/oder Aufzeichnungsgerät für optische Aufzeichnungsträger
US6049073A (en) * 1998-03-27 2000-04-11 Eastman Kodak Company Control circuit for a stabilized laser
JP4068752B2 (ja) * 1999-03-02 2008-03-26 シャープ株式会社 光ディスク装置
FI20000379A (fi) * 2000-02-18 2001-08-19 Nokia Mobile Phones Ltd Tiedonsiirtomenetelmä ja -järjestelmä
US6580675B1 (en) * 2000-03-09 2003-06-17 Terastor Corporation Laser driver for an optical recording system
TW470945B (en) * 2000-06-15 2002-01-01 Ind Tech Res Inst Automatic output power calibration method of the pickup head of optical storage medium
DE10064775A1 (de) * 2000-12-22 2002-06-27 Thomson Brandt Gmbh Verfahren und Anordnung zum Regeln der Lichtleistung eines Abtaststrahls in einem Gerät zum Lesen oder zum Beschreiben optischer Aufzeichnungsträger
US20020125406A1 (en) * 2001-02-20 2002-09-12 Eastman Kodak Company System and method for improving laser power and stabilization using high duty cycle radio frequency injection
WO2004038711A1 (ja) * 2002-10-28 2004-05-06 Matsushita Electric Industrial Co., Ltd. 半導体レーザ駆動装置、光ヘッド装置、光情報処理装置及び光記録媒体
US7381712B2 (en) * 2003-05-09 2008-06-03 Avigenics, Inc. In vivo transfection in avians
US7400662B2 (en) * 2005-01-26 2008-07-15 Avago Technologies Fiber Ip Pte Ltd Calibration of laser systems
US7468998B2 (en) * 2005-03-25 2008-12-23 Pavilion Integration Corporation Radio frequency modulation of variable degree and automatic power control using external photodiode sensor for low-noise lasers of various wavelengths
US7606273B2 (en) * 2007-10-15 2009-10-20 Pavilion Integration Corporation Wavelength and intensity stabilized laser diode and application of same to pumping solid-state lasers
US20100091806A1 (en) * 2008-10-10 2010-04-15 Pavilion Integration Corporation Semiconductor Lasers with Improved Temporal, Spectral, and Spatial Stability and Beam Profile Uniformity
TW201027522A (en) * 2009-01-09 2010-07-16 Sunplus Technology Co Ltd Methods for on-line calibrating output power of optical pick-up
US8289832B2 (en) * 2009-06-11 2012-10-16 Texas Instruments Incorporated Input signal processing system
JP2011100514A (ja) * 2009-11-06 2011-05-19 Hitachi-Lg Data Storage Inc 光ディスク装置
JP2013251022A (ja) * 2012-05-31 2013-12-12 Funai Electric Co Ltd 光ディスク装置、光ディスクの再生方法
JP2014115121A (ja) * 2012-12-06 2014-06-26 Sony Corp 微小粒子分析装置及び微小粒子分析方法
US11798447B1 (en) 2022-07-29 2023-10-24 Zoom Video Communications, Inc. Illumination testing for shared device displays

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2615553B2 (ja) * 1985-11-14 1997-05-28 富士通株式会社 レーザ制御装置
US4819242A (en) * 1985-11-20 1989-04-04 Hitachi, Ltd. Semiconductor laser driver circuit
JPS62150732U (de) * 1986-03-17 1987-09-24
US4811329A (en) * 1986-06-06 1989-03-07 Mitsubishi Denki Kabushiki Kaisha Optical head with laser having particular source of driving current
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.

Also Published As

Publication number Publication date
DE69023572T2 (de) 1996-03-28
US5175722A (en) 1992-12-29
EP0412800A3 (en) 1992-02-19
EP0412800B1 (de) 1995-11-15
EP0412800A2 (de) 1991-02-13

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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