FR2095550A5 - - Google Patents

Info

Publication number
FR2095550A5
FR2095550A5 FR7116465A FR7116465A FR2095550A5 FR 2095550 A5 FR2095550 A5 FR 2095550A5 FR 7116465 A FR7116465 A FR 7116465A FR 7116465 A FR7116465 A FR 7116465A FR 2095550 A5 FR2095550 A5 FR 2095550A5
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
FR7116465A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of FR2095550A5 publication Critical patent/FR2095550A5/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
    • 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
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10547—Heads for reproducing using optical beam of radiation interacting with the magnetisation of an intermediate transfer element, e.g. magnetic film, included in the head
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/09—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on magneto-optical elements, e.g. exhibiting Faraday effect

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR7116465A 1970-06-25 1971-04-29 Expired FR2095550A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4975870A 1970-06-25 1970-06-25

Publications (1)

Publication Number Publication Date
FR2095550A5 true FR2095550A5 (fr) 1972-02-11

Family

ID=21961558

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7116465A Expired FR2095550A5 (fr) 1970-06-25 1971-04-29

Country Status (6)

Country Link
US (1) US3665431A (fr)
CA (1) CA940229A (fr)
CH (1) CH528742A (fr)
DE (1) DE2130702A1 (fr)
FR (1) FR2095550A5 (fr)
GB (1) GB1287864A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097975A2 (fr) * 1982-06-30 1984-01-11 Kabushiki Kaisha Toshiba Tête magnétique pour un arrangement d'enregistrement ou de reproduction perpendiculaire
EP0594471A2 (fr) * 1992-09-18 1994-04-27 Thomson-Csf Dispositif de lecture magnétique
EP0620573A2 (fr) * 1989-06-02 1994-10-19 Quantum Corporation Dispositifs en films minces magnétiques pour propagation de flux
FR2740278A1 (fr) * 1995-10-20 1997-04-25 Thomson Csf Modulateur d'onde electromagnetique

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4202022A (en) * 1975-10-20 1980-05-06 Kokusai Denshin Denwa Kabushiki Kaisha Magnetic transfer record film and apparatus for magneto-optically reading magnetic record patterns using the same
CA1190321A (fr) * 1981-10-29 1985-07-09 Toshihisa Deguchi Tete magneto-optique
US4594699A (en) * 1983-06-20 1986-06-10 Datatape Incorporated Faraday-effect magneto-optic transducer apparatus of a rotary form
DE3479544D1 (en) * 1983-06-20 1989-09-28 Datatape Inc Apparatus for reading magnetically recorded information
US4609961A (en) * 1984-08-20 1986-09-02 Datatape Incorporated Faraday-effect magneto-optic transducer
US4654837A (en) * 1985-09-06 1987-03-31 Datatape Incorporated Magneto-optic transducer with enhanced signal performance
FR2656723B1 (fr) * 1989-12-28 1995-07-21 Thomson Consumer Electronics Tete de lecture multipiste magneto-optique.
FR2797708B1 (fr) * 1999-08-20 2002-07-12 Thomson Csf Tete de lecture magnetique
DE102004025937A1 (de) * 2004-05-27 2005-12-22 Giesecke & Devrient Gmbh Vorrichtung und Verfahren zur Untersuchung von magnetichen Eigenschaften von Objekten

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097975A2 (fr) * 1982-06-30 1984-01-11 Kabushiki Kaisha Toshiba Tête magnétique pour un arrangement d'enregistrement ou de reproduction perpendiculaire
EP0097975A3 (fr) * 1982-06-30 1984-03-28 Kabushiki Kaisha Toshiba Tête magnétique pour un arrangement d'enregistrement ou de reproduction perpendiculaire
EP0620573A2 (fr) * 1989-06-02 1994-10-19 Quantum Corporation Dispositifs en films minces magnétiques pour propagation de flux
EP0620573A3 (fr) * 1989-06-02 1995-04-05 Digital Equipment Corp Dispositifs en films minces magnétiques pour propagation de flux.
EP0594471A2 (fr) * 1992-09-18 1994-04-27 Thomson-Csf Dispositif de lecture magnétique
EP0594471A3 (en) * 1992-09-18 1994-07-06 Thomson Csf Magnetic read-out device
US5568336A (en) * 1992-09-18 1996-10-22 Thomson-Csf Magnetic reading device with alternating magnetic biasing means
FR2740278A1 (fr) * 1995-10-20 1997-04-25 Thomson Csf Modulateur d'onde electromagnetique

Also Published As

Publication number Publication date
CA940229A (en) 1974-01-15
DE2130702A1 (de) 1971-12-30
CH528742A (de) 1972-09-30
US3665431A (en) 1972-05-23
GB1287864A (fr) 1972-09-06

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Legal Events

Date Code Title Description
ST Notification of lapse