JPS6214892B2 - - Google Patents

Info

Publication number
JPS6214892B2
JPS6214892B2 JP56199599A JP19959981A JPS6214892B2 JP S6214892 B2 JPS6214892 B2 JP S6214892B2 JP 56199599 A JP56199599 A JP 56199599A JP 19959981 A JP19959981 A JP 19959981A JP S6214892 B2 JPS6214892 B2 JP S6214892B2
Authority
JP
Japan
Prior art keywords
light
photodetectors
photodetector
output
optical information
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
JP56199599A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58100243A (ja
Inventor
Hisao Uehara
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP56199599A priority Critical patent/JPS58100243A/ja
Publication of JPS58100243A publication Critical patent/JPS58100243A/ja
Publication of JPS6214892B2 publication Critical patent/JPS6214892B2/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
    • G11B7/13—Optical detectors therefor

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
JP56199599A 1981-12-10 1981-12-10 光学的情報読出し方法 Granted JPS58100243A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56199599A JPS58100243A (ja) 1981-12-10 1981-12-10 光学的情報読出し方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56199599A JPS58100243A (ja) 1981-12-10 1981-12-10 光学的情報読出し方法

Publications (2)

Publication Number Publication Date
JPS58100243A JPS58100243A (ja) 1983-06-14
JPS6214892B2 true JPS6214892B2 (de) 1987-04-04

Family

ID=16410529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56199599A Granted JPS58100243A (ja) 1981-12-10 1981-12-10 光学的情報読出し方法

Country Status (1)

Country Link
JP (1) JPS58100243A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4648084A (en) * 1981-12-10 1987-03-03 Discovision Associates Storage medium track pitch detector
DE3787388T2 (de) * 1986-03-19 1994-01-13 Sanyo Electric Co Optisches Aufzeichnungsgerät.
EP0588385B1 (de) * 1989-02-13 1997-10-15 Omron Corporation Datenaufzeichnungs-/Wiedergabevorrichtung für optische Karte

Also Published As

Publication number Publication date
JPS58100243A (ja) 1983-06-14

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