ATE122173T1 - Optisches aufzeichnungs- und wiedergabesystem mit doppelter lichtquelle. - Google Patents

Optisches aufzeichnungs- und wiedergabesystem mit doppelter lichtquelle.

Info

Publication number
ATE122173T1
ATE122173T1 AT90103161T AT90103161T ATE122173T1 AT E122173 T1 ATE122173 T1 AT E122173T1 AT 90103161 T AT90103161 T AT 90103161T AT 90103161 T AT90103161 T AT 90103161T AT E122173 T1 ATE122173 T1 AT E122173T1
Authority
AT
Austria
Prior art keywords
light source
recording
light
playback system
semiconductor laser
Prior art date
Application number
AT90103161T
Other languages
English (en)
Inventor
Keiichi C O Omron Corp Tsutsui
Property Center I Intellectual
Kazuo C O Omron Corpora Tsuboi
Koji C O Omron Corporatio Sogo
Igadera Center
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Application granted granted Critical
Publication of ATE122173T1 publication Critical patent/ATE122173T1/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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • 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
    • 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
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
AT90103161T 1989-02-20 1990-02-19 Optisches aufzeichnungs- und wiedergabesystem mit doppelter lichtquelle. ATE122173T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1041394A JPH077509B2 (ja) 1989-02-20 1989-02-20 ２光源方式光学的記録再生装置

Publications (1)

Publication Number Publication Date
ATE122173T1 true ATE122173T1 (de) 1995-05-15

Family

ID=12607161

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90103161T ATE122173T1 (de) 1989-02-20 1990-02-19 Optisches aufzeichnungs- und wiedergabesystem mit doppelter lichtquelle.

Country Status (5)

Country Link
US (1) US5191572A (de)
EP (1) EP0384358B1 (de)
JP (1) JPH077509B2 (de)
AT (1) ATE122173T1 (de)
DE (1) DE69019026T2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2650065B2 (ja) * 1989-08-21 1997-09-03 ペルメレック電極株式会社 硫酸の回収方法
JPH04305821A (ja) * 1991-04-02 1992-10-28 Sony Corp ディスク再生装置
JPH04335214A (ja) * 1991-05-09 1992-11-24 Olympus Optical Co Ltd 情報記録再生装置
JPH0676314A (ja) * 1992-08-31 1994-03-18 Olympus Optical Co Ltd 光学的情報再生装置
US5511051A (en) * 1992-08-31 1996-04-23 Olympus Optical Co., Ltd. Optical recording/reproducing apparatus capable of multi-track access for simultaneous multirack recording/reproduction
US5402399A (en) * 1992-08-31 1995-03-28 Olympus Optical Co., Ltd. Apparatus and method for reproducing information data from optical cards
FR2741989B3 (fr) * 1995-12-04 1998-01-09 Andre Yves Bernard Dispositif de lecture optique d'informations numeriques sur un support, notamment dispositif de lecture de disque a lecture laser
GB9623766D0 (en) * 1996-11-15 1997-01-08 Verity Group Plc Optical disc reader
CN113380278B (zh) * 2018-11-20 2023-03-31 中国科学院上海高等研究院 基于纳米光刻的光盘读取方法、读取装置及光盘读写装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4516242A (en) * 1981-06-18 1985-05-07 Tokyo Shibaura Denki Kabushiki Kaisha Output stabilizing device
US4488277A (en) * 1982-02-10 1984-12-11 North American Philips Corporation Control system for an optical data recording apparatus
US4700336A (en) * 1984-06-19 1987-10-13 Matsushita Electric Industrial Co., Ltd. Optical recording and playback apparatus using plural light spots
US4685097A (en) * 1985-07-25 1987-08-04 Laser Magnetic Storage International Company Power control system for a semiconductor laser
JPS6267731A (ja) * 1985-09-20 1987-03-27 Fujitsu Ltd 光記録再生方法及び光記録再生装置
JPS62139179A (ja) * 1985-12-11 1987-06-22 Csk Corp 同期制御方式
JPH0799584B2 (ja) * 1985-12-24 1995-10-25 株式会社日立製作所 光学式情報記録再生装置
JPS62229542A (ja) * 1986-03-31 1987-10-08 Toshiba Corp 光学式記録機器の光出力制御装置
EP0245821A3 (en) * 1986-05-12 1988-07-20 Csk Corporation Data record formatting system and reading/writing system for optical recording medium
ATE111253T1 (de) * 1986-07-31 1994-09-15 Sony Corp Aufzeichnungs/wiedergabegerät für optische platte.
US4860276A (en) * 1986-09-18 1989-08-22 Nippon Telegraph And Telephone Corporation Micro optical head with an optically switched laser diode
NL8800223A (nl) * 1987-04-21 1988-11-16 Philips Nv Systeem voor het registreren van een informatiesignaal, alsmede een registratiedrager en registratieinrichting voor toepassing in het systeem.
US4998237A (en) * 1987-04-28 1991-03-05 Yamaha Corporation Optical disc recording device having improved accuracy of pit formation
EP0289004B1 (de) * 1987-04-28 1994-03-23 Sharp Kabushiki Kaisha Aufzeichnungs- und Wiedergabegerät

Also Published As

Publication number Publication date
JPH02220227A (ja) 1990-09-03
DE69019026T2 (de) 1996-01-25
JPH077509B2 (ja) 1995-01-30
US5191572A (en) 1993-03-02
EP0384358A2 (de) 1990-08-29
EP0384358A3 (de) 1992-01-08
DE69019026D1 (de) 1995-06-08
EP0384358B1 (de) 1995-05-03

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties