DE69224502D1 - Magnetooptisches Aufzeichnungsmedium und magnetooptisches Aufzeichnungs-/Wiedergabeverfahren - Google Patents

Magnetooptisches Aufzeichnungsmedium und magnetooptisches Aufzeichnungs-/Wiedergabeverfahren

Info

Publication number
DE69224502D1
DE69224502D1 DE69224502T DE69224502T DE69224502D1 DE 69224502 D1 DE69224502 D1 DE 69224502D1 DE 69224502 T DE69224502 T DE 69224502T DE 69224502 T DE69224502 T DE 69224502T DE 69224502 D1 DE69224502 D1 DE 69224502D1
Authority
DE
Germany
Prior art keywords
magneto
optical recording
reproduction method
recording medium
medium
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 - Fee Related
Application number
DE69224502T
Other languages
English (en)
Other versions
DE69224502T2 (de
Inventor
Tsutomu Shiratori
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of DE69224502D1 publication Critical patent/DE69224502D1/de
Application granted granted Critical
Publication of DE69224502T2 publication Critical patent/DE69224502T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B11/10502—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
    • G11B11/10515—Reproducing
    • 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
DE69224502T 1991-10-07 1992-09-30 Magnetooptisches Aufzeichnungsmedium und magnetooptisches Aufzeichnungs-/Wiedergabeverfahren Expired - Fee Related DE69224502T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25927691A JP3159742B2 (ja) 1991-10-07 1991-10-07 光磁気記録再生方法

Publications (2)

Publication Number Publication Date
DE69224502D1 true DE69224502D1 (de) 1998-04-02
DE69224502T2 DE69224502T2 (de) 1998-07-09

Family

ID=17331847

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69224502T Expired - Fee Related DE69224502T2 (de) 1991-10-07 1992-09-30 Magnetooptisches Aufzeichnungsmedium und magnetooptisches Aufzeichnungs-/Wiedergabeverfahren

Country Status (4)

Country Link
US (1) US5450382A (de)
EP (1) EP0536938B1 (de)
JP (1) JP3159742B2 (de)
DE (1) DE69224502T2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3092363B2 (ja) * 1992-12-01 2000-09-25 松下電器産業株式会社 光磁気記録媒体
JPH06195784A (ja) * 1992-12-28 1994-07-15 Canon Inc 光磁気記録媒体及び該媒体を用いた情報記録方法
KR0157654B1 (ko) * 1993-12-17 1998-12-15 쯔지 하루오 광자기 기록매체 및 이것을 이용한 광자기 기록 정보의 재생방법
JPH07192335A (ja) * 1993-12-27 1995-07-28 Shin Etsu Chem Co Ltd 光磁気記録媒体およびその製造方法
JP2809991B2 (ja) * 1994-01-14 1998-10-15 富士通株式会社 光磁気記録媒体及び該媒体に記録された情報の再生方法
JPH08106670A (ja) * 1994-08-09 1996-04-23 Nec Corp 光磁気記録媒体の再生方法及びその光磁気記録媒体
DE19535994C2 (de) * 1994-10-14 1998-07-16 Sharp Kk Magnetooptisches Aufzeichnungsmedium und Herstellverfahren für dieses
JP3091099B2 (ja) * 1994-11-25 2000-09-25 シャープ株式会社 光磁気記録媒体および光磁気記録再生方法
JP3277245B2 (ja) * 1995-03-27 2002-04-22 富士通株式会社 光磁気記録媒体及びその再生方法
JPH09270156A (ja) * 1996-04-01 1997-10-14 Canon Inc 光磁気記録媒体
US9153249B1 (en) * 2014-04-21 2015-10-06 Lsi Corporation Cross-talk measurement in array reader magnetic recording system
WO2017147217A1 (en) * 2016-02-23 2017-08-31 Schlumberger Technology Corporation Enhanced two dimensional inversion

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0695404B2 (ja) * 1985-12-27 1994-11-24 ソニー株式会社 光磁気記録方法
DE3752222T2 (de) * 1986-07-08 1999-03-25 Canon Kk Magnetoptisches Aufzeichnungsmedium mit der Möglichkeit des Überschreibens mit zwei oder mehr Magnetschichten und dieses Medium verwendende Aufzeichnungsmethode
US5187694A (en) * 1987-08-21 1993-02-16 Kabushiki Kaisha Toshiba Magneto-optical recording medium comprising recording layer and thermal bias layer, and method for recording, erasing and overwriting on the medium
EP0318925B1 (de) * 1987-11-30 1994-04-20 Sony Corporation Methode zum optischen Abtasten eines Signals aus einem magneto-optischen Speichermedium
JP2910084B2 (ja) * 1989-09-06 1999-06-23 ソニー株式会社 光磁気記録媒体における信号再生方法
US5168482A (en) * 1989-08-31 1992-12-01 Sony Corporation Magnetooptical recording and playback method employing multi-layer recording medium with record holding layer and playback layer
JP2567996B2 (ja) * 1991-01-23 1996-12-25 インターナショナル・ビジネス・マシーンズ・コーポレイション 光磁気記録方法及び装置

Also Published As

Publication number Publication date
JPH05101469A (ja) 1993-04-23
EP0536938A2 (de) 1993-04-14
EP0536938A3 (en) 1993-07-07
EP0536938B1 (de) 1998-02-25
DE69224502T2 (de) 1998-07-09
US5450382A (en) 1995-09-12
JP3159742B2 (ja) 2001-04-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee