DE3802693A1 - Magnetooptische aufzeichnungseinrichtung - Google Patents

Magnetooptische aufzeichnungseinrichtung

Info

Publication number
DE3802693A1
DE3802693A1 DE19883802693 DE3802693A DE3802693A1 DE 3802693 A1 DE3802693 A1 DE 3802693A1 DE 19883802693 DE19883802693 DE 19883802693 DE 3802693 A DE3802693 A DE 3802693A DE 3802693 A1 DE3802693 A1 DE 3802693A1
Authority
DE
Germany
Prior art keywords
magneto
optical recording
optical
recording medium
light
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.)
Granted
Application number
DE19883802693
Other languages
German (de)
English (en)
Other versions
DE3802693C2 (xx
Inventor
Takeshi Nakao
Masahiro Ojima
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of DE3802693A1 publication Critical patent/DE3802693A1/de
Application granted granted Critical
Publication of DE3802693C2 publication Critical patent/DE3802693C2/de
Granted 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
    • G11B11/10595—Control of operating function
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10504—Recording
    • G11B11/10508—Recording by modulating only the magnetic field at the transducer
    • 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
    • G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
    • G11B11/10536—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
DE19883802693 1987-01-30 1988-01-29 Magnetooptische aufzeichnungseinrichtung Granted DE3802693A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1839087A JPS63187439A (ja) 1987-01-30 1987-01-30 光磁気記録方式

Publications (2)

Publication Number Publication Date
DE3802693A1 true DE3802693A1 (de) 1988-08-11
DE3802693C2 DE3802693C2 (xx) 1990-03-01

Family

ID=11970384

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883802693 Granted DE3802693A1 (de) 1987-01-30 1988-01-29 Magnetooptische aufzeichnungseinrichtung

Country Status (2)

Country Link
JP (1) JPS63187439A (xx)
DE (1) DE3802693A1 (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0419269A2 (en) * 1989-09-22 1991-03-27 Nikon Corporation Magnetooptical recording method and apparatus used therefor
US5087532A (en) * 1989-08-01 1992-02-11 Minnesota Mining And Manufacturing Company Direct-overwrite magneto-optic media
EP0470826A1 (en) * 1990-08-07 1992-02-12 Sharp Kabushiki Kaisha Magneto-optical recording system
EP0524315A1 (en) * 1991-02-13 1993-01-27 Sony Corporation Method for reproducing signal in optically recording medium
EP0545722A1 (en) * 1991-12-05 1993-06-09 Sharp Kabushiki Kaisha Magneto-optical disk

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2738785B2 (ja) * 1991-06-27 1998-04-08 三菱電機株式会社 光磁気記録再生装置
US5390162A (en) * 1991-02-05 1995-02-14 Sony Corporation Method for reproducing signals recorded on optical recording medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51107112A (ja) * 1975-03-17 1976-09-22 Fuji Photo Film Co Ltd Jikishiitonokirokusaiseihoho oyobi sochi
JPS59215008A (ja) * 1983-05-20 1984-12-04 Canon Inc 光磁気記録方法
JPH0635303A (ja) * 1992-05-29 1994-02-10 Eastman Kodak Co グレイスケール単一成分非磁性現像システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51107112A (ja) * 1975-03-17 1976-09-22 Fuji Photo Film Co Ltd Jikishiitonokirokusaiseihoho oyobi sochi
JPS59215008A (ja) * 1983-05-20 1984-12-04 Canon Inc 光磁気記録方法
JPH0635303A (ja) * 1992-05-29 1994-02-10 Eastman Kodak Co グレイスケール単一成分非磁性現像システム

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5087532A (en) * 1989-08-01 1992-02-11 Minnesota Mining And Manufacturing Company Direct-overwrite magneto-optic media
EP0419269A2 (en) * 1989-09-22 1991-03-27 Nikon Corporation Magnetooptical recording method and apparatus used therefor
EP0419269A3 (en) * 1989-09-22 1992-08-26 Nikon Corporation Magnetooptical pit position recording method and apparatus used therefor
EP0470826A1 (en) * 1990-08-07 1992-02-12 Sharp Kabushiki Kaisha Magneto-optical recording system
EP0524315A1 (en) * 1991-02-13 1993-01-27 Sony Corporation Method for reproducing signal in optically recording medium
EP0524315B1 (en) * 1991-02-13 1996-07-03 Sony Corporation Method for reproducing signal in optically recording medium
EP0545722A1 (en) * 1991-12-05 1993-06-09 Sharp Kabushiki Kaisha Magneto-optical disk

Also Published As

Publication number Publication date
DE3802693C2 (xx) 1990-03-01
JPS63187439A (ja) 1988-08-03

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee