JPH0531220B2 - - Google Patents

Info

Publication number
JPH0531220B2
JPH0531220B2 JP57025243A JP2524382A JPH0531220B2 JP H0531220 B2 JPH0531220 B2 JP H0531220B2 JP 57025243 A JP57025243 A JP 57025243A JP 2524382 A JP2524382 A JP 2524382A JP H0531220 B2 JPH0531220 B2 JP H0531220B2
Authority
JP
Japan
Prior art keywords
light
recording
light source
optical
reproduction
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
JP57025243A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58143442A (ja
Inventor
Haruhiko Takemura
Kiichi Kato
Masaharu Sakamoto
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.)
Olympus Corp
Original Assignee
Olympus Optical Co 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP57025243A priority Critical patent/JPS58143442A/ja
Priority to US06/466,910 priority patent/US4574371A/en
Priority to DE3305904A priority patent/DE3305904A1/de
Publication of JPS58143442A publication Critical patent/JPS58143442A/ja
Publication of JPH0531220B2 publication Critical patent/JPH0531220B2/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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP57025243A 1982-02-20 1982-02-20 情報記録再生装置 Granted JPS58143442A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP57025243A JPS58143442A (ja) 1982-02-20 1982-02-20 情報記録再生装置
US06/466,910 US4574371A (en) 1982-02-20 1983-02-16 Apparatus for recording and reproducing information on an optical disc
DE3305904A DE3305904A1 (de) 1982-02-20 1983-02-21 Vorrichtung zum aufzeichnen und wiedergeben einer information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57025243A JPS58143442A (ja) 1982-02-20 1982-02-20 情報記録再生装置

Publications (2)

Publication Number Publication Date
JPS58143442A JPS58143442A (ja) 1983-08-26
JPH0531220B2 true JPH0531220B2 (en]) 1993-05-12

Family

ID=12160537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57025243A Granted JPS58143442A (ja) 1982-02-20 1982-02-20 情報記録再生装置

Country Status (1)

Country Link
JP (1) JPS58143442A (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0310317U (en]) * 1989-06-14 1991-01-31

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50158288A (en]) * 1974-06-10 1975-12-22
JPS51109851A (en]) * 1975-03-24 1976-09-29 Japan Broadcasting Corp
NL8101932A (nl) * 1981-04-21 1982-11-16 Philips Nv Inrichting voor het inschrijven en uitlezen van informatiesporen in een optische registratiedrager.

Also Published As

Publication number Publication date
JPS58143442A (ja) 1983-08-26

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