JPS54834A - Optical information processing system - Google Patents

Optical information processing system

Info

Publication number
JPS54834A
JPS54834A JP6556677A JP6556677A JPS54834A JP S54834 A JPS54834 A JP S54834A JP 6556677 A JP6556677 A JP 6556677A JP 6556677 A JP6556677 A JP 6556677A JP S54834 A JPS54834 A JP S54834A
Authority
JP
Japan
Prior art keywords
information processing
processing system
optical information
erasion
recording
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.)
Pending
Application number
JP6556677A
Other languages
Japanese (ja)
Inventor
Manabu Yamamoto
Shuzo Fukunishi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP6556677A priority Critical patent/JPS54834A/en
Publication of JPS54834A publication Critical patent/JPS54834A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To secure recording and erasion of the information particularly at the minute part region to be utilized effectively for the recording and erasion of the high-density optical memory, by performing the information recording by the thermal effect of the laser beam as well as the information erasion by the optical effect respectively.
JP6556677A 1977-06-03 1977-06-03 Optical information processing system Pending JPS54834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6556677A JPS54834A (en) 1977-06-03 1977-06-03 Optical information processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6556677A JPS54834A (en) 1977-06-03 1977-06-03 Optical information processing system

Publications (1)

Publication Number Publication Date
JPS54834A true JPS54834A (en) 1979-01-06

Family

ID=13290680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6556677A Pending JPS54834A (en) 1977-06-03 1977-06-03 Optical information processing system

Country Status (1)

Country Link
JP (1) JPS54834A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6226640A (en) * 1985-05-21 1987-02-04 ヘキスト・セラニーズ・コーポレーション Erasion of optical information medium
JPH01251323A (en) * 1988-03-30 1989-10-06 Aiwa Co Ltd Optical disk reproducing device
US5272667A (en) * 1989-12-29 1993-12-21 Matsushita Electric Industrial Co., Ltd. Optical information recording apparatus for recording optical information in a phase change type optical recording medium and method therefor
FR2722605A1 (en) * 1994-07-13 1996-01-19 Thomson Csf Optical recording and reading method e.g. for optical disks
US5680386A (en) * 1993-12-23 1997-10-21 Thomson-Csf Optical method and system for writing/reading information on a recording medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4881442A (en) * 1972-01-25 1973-10-31

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4881442A (en) * 1972-01-25 1973-10-31

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6226640A (en) * 1985-05-21 1987-02-04 ヘキスト・セラニーズ・コーポレーション Erasion of optical information medium
JPH01251323A (en) * 1988-03-30 1989-10-06 Aiwa Co Ltd Optical disk reproducing device
US5272667A (en) * 1989-12-29 1993-12-21 Matsushita Electric Industrial Co., Ltd. Optical information recording apparatus for recording optical information in a phase change type optical recording medium and method therefor
US5680386A (en) * 1993-12-23 1997-10-21 Thomson-Csf Optical method and system for writing/reading information on a recording medium
FR2722605A1 (en) * 1994-07-13 1996-01-19 Thomson Csf Optical recording and reading method e.g. for optical disks

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