JPS6238768B2 - - Google Patents

Info

Publication number
JPS6238768B2
JPS6238768B2 JP54047101A JP4710179A JPS6238768B2 JP S6238768 B2 JPS6238768 B2 JP S6238768B2 JP 54047101 A JP54047101 A JP 54047101A JP 4710179 A JP4710179 A JP 4710179A JP S6238768 B2 JPS6238768 B2 JP S6238768B2
Authority
JP
Japan
Prior art keywords
pulse
signal
optical recording
pit
recording medium
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
Application number
JP54047101A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55139693A (en
Inventor
Koichi Ogawa
Shigeru Arai
Seiya Ogawa
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
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4710179A priority Critical patent/JPS55139693A/ja
Publication of JPS55139693A publication Critical patent/JPS55139693A/ja
Publication of JPS6238768B2 publication Critical patent/JPS6238768B2/ja
Granted 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
    • 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
    • G11B7/0045—Recording

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
JP4710179A 1979-04-17 1979-04-17 Write system for optical recording medium Granted JPS55139693A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4710179A JPS55139693A (en) 1979-04-17 1979-04-17 Write system for optical recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4710179A JPS55139693A (en) 1979-04-17 1979-04-17 Write system for optical recording medium

Publications (2)

Publication Number Publication Date
JPS55139693A JPS55139693A (en) 1980-10-31
JPS6238768B2 true JPS6238768B2 (enrdf_load_stackoverflow) 1987-08-19

Family

ID=12765779

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4710179A Granted JPS55139693A (en) 1979-04-17 1979-04-17 Write system for optical recording medium

Country Status (1)

Country Link
JP (1) JPS55139693A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10709243B2 (en) 2008-04-14 2020-07-14 Keter Plastic Ltd. Artificial panel, a method for manufacturing same and furniture articles therefrom

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5736439A (en) * 1980-08-13 1982-02-27 Matsushita Electric Ind Co Ltd Information signal recorder
JP2523464B2 (ja) * 1982-04-16 1996-08-07 株式会社日立製作所 半導体レ−ザの駆動方法
JPS58208938A (ja) * 1982-05-31 1983-12-05 Sony Corp デイスク記録装置
US4562567A (en) * 1982-11-12 1985-12-31 North American Philips Corporation Apparatus for controlling the write beam in an optical data recording system
JPS60162768A (ja) * 1984-01-31 1985-08-24 Nippon Kogaku Kk <Nikon> 光磁気記録又は消去装置
JP2579746B2 (ja) * 1984-11-29 1997-02-12 セイコーエプソン株式会社 光記録装置
JPH0650567B2 (ja) * 1984-12-07 1994-06-29 松下電器産業株式会社 信号記録装置
JP2559362B2 (ja) * 1985-03-22 1996-12-04 株式会社日立製作所 光学的記録方法
JP2605015B2 (ja) * 1985-06-26 1997-04-30 インターナショナル・ビジネス・マシーンズ・コーポレーション 熱誘導記録の情報担特信号レコーダ
JP2568513B2 (ja) * 1986-08-01 1997-01-08 松下電器産業株式会社 レーザーパワー制御方法
NL8602718A (nl) * 1986-10-29 1988-05-16 Philips Nv Werkwijze voor het optekenen van een tweewaardig signaal op een optisch uitleesbare registratiedrager en een inrichting voor het uitvoeren van de werkwijze.
JP2560298B2 (ja) * 1986-12-23 1996-12-04 ヤマハ株式会社 光デイスク記録装置
JP2712159B2 (ja) * 1987-01-16 1998-02-10 株式会社ニコン 光媒体記録方法
JP2776833B2 (ja) * 1988-06-27 1998-07-16 株式会社日立製作所 情報記録装置
JP2839783B2 (ja) * 1991-04-17 1998-12-16 シャープ株式会社 光磁気記録媒体、再生装置及び再生方法
US5400313A (en) * 1992-11-09 1995-03-21 International Business Machines Corporation Optical data storage system and method with reduced heat buildup
US5530688A (en) * 1994-10-31 1996-06-25 International Business Machines Corporation Optical disk recording device using two modulated laser beams for recording information data
JP2669408B2 (ja) * 1995-08-04 1997-10-27 株式会社日立製作所 半導体レーザの駆動方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5145908A (en) * 1974-10-17 1976-04-19 Victor Company Of Japan Johoshingono kogakutekikirokuhoshiki
DE2636922A1 (de) * 1976-08-17 1978-02-23 Nat Rejectors Gmbh Schaltungsanordnung zur ueberwachung einer muenzpruefeinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10709243B2 (en) 2008-04-14 2020-07-14 Keter Plastic Ltd. Artificial panel, a method for manufacturing same and furniture articles therefrom

Also Published As

Publication number Publication date
JPS55139693A (en) 1980-10-31

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