FR2164499B1 - - Google Patents

Info

Publication number
FR2164499B1
FR2164499B1 FR7146396A FR7146396A FR2164499B1 FR 2164499 B1 FR2164499 B1 FR 2164499B1 FR 7146396 A FR7146396 A FR 7146396A FR 7146396 A FR7146396 A FR 7146396A FR 2164499 B1 FR2164499 B1 FR 2164499B1
Authority
FR
France
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
FR7146396A
Other languages
French (fr)
Other versions
FR2164499A1 (en
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7146396A priority Critical patent/FR2164499B1/fr
Publication of FR2164499A1 publication Critical patent/FR2164499A1/fr
Application granted granted Critical
Publication of FR2164499B1 publication Critical patent/FR2164499B1/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
    • G11C13/06—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using magneto-optical elements

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR7146396A 1971-12-23 1971-12-23 Expired FR2164499B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7146396A FR2164499B1 (en) 1971-12-23 1971-12-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7146396A FR2164499B1 (en) 1971-12-23 1971-12-23

Publications (2)

Publication Number Publication Date
FR2164499A1 FR2164499A1 (en) 1973-08-03
FR2164499B1 true FR2164499B1 (en) 1974-08-23

Family

ID=9087973

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7146396A Expired FR2164499B1 (en) 1971-12-23 1971-12-23

Country Status (1)

Country Link
FR (1) FR2164499B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2710166C2 (en) * 1977-03-09 1984-09-13 Philips Patentverwaltung Gmbh, 2000 Hamburg Mechanically addressed optical memory
JPS57162137A (en) * 1981-03-28 1982-10-05 Kokusai Denshin Denwa Co Ltd <Kdd> Photomagnetic recording and reproducing system

Also Published As

Publication number Publication date
FR2164499A1 (en) 1973-08-03

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Legal Events

Date Code Title Description
ST Notification of lapse