JPH0419610B2 - - Google Patents

Info

Publication number
JPH0419610B2
JPH0419610B2 JP59006179A JP617984A JPH0419610B2 JP H0419610 B2 JPH0419610 B2 JP H0419610B2 JP 59006179 A JP59006179 A JP 59006179A JP 617984 A JP617984 A JP 617984A JP H0419610 B2 JPH0419610 B2 JP H0419610B2
Authority
JP
Japan
Prior art keywords
pit
laser beam
medium
recording
irradiation
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 - Lifetime
Application number
JP59006179A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60150240A (ja
Inventor
Jun Saito
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.)
Nikon Corp
Original Assignee
Nippon Kogaku KK
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 Nippon Kogaku KK filed Critical Nippon Kogaku KK
Priority to JP59006179A priority Critical patent/JPS60150240A/ja
Publication of JPS60150240A publication Critical patent/JPS60150240A/ja
Publication of JPH0419610B2 publication Critical patent/JPH0419610B2/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
    • 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
    • G11B7/24—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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
JP59006179A 1984-01-17 1984-01-17 熱式情報記録装置 Granted JPS60150240A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59006179A JPS60150240A (ja) 1984-01-17 1984-01-17 熱式情報記録装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59006179A JPS60150240A (ja) 1984-01-17 1984-01-17 熱式情報記録装置

Publications (2)

Publication Number Publication Date
JPS60150240A JPS60150240A (ja) 1985-08-07
JPH0419610B2 true JPH0419610B2 (en, 2012) 1992-03-31

Family

ID=11631318

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59006179A Granted JPS60150240A (ja) 1984-01-17 1984-01-17 熱式情報記録装置

Country Status (1)

Country Link
JP (1) JPS60150240A (en, 2012)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2712159B2 (ja) * 1987-01-16 1998-02-10 株式会社ニコン 光媒体記録方法
JP2796290B2 (ja) * 1987-04-10 1998-09-10 株式会社日立製作所 可逆相変化を用いた情報記録方法
JPH01155521A (ja) * 1987-12-11 1989-06-19 Nippon Telegr & Teleph Corp <Ntt> 光ディスクへの記録方法
JP4560251B2 (ja) * 2001-09-10 2010-10-13 パイオニア株式会社 情報記録装置および情報記録方法

Also Published As

Publication number Publication date
JPS60150240A (ja) 1985-08-07

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term