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DE68918791D1 - Photomagnetisches aufzeichnungsverfahren. - Google Patents

Photomagnetisches aufzeichnungsverfahren.

Info

Publication number
DE68918791D1
DE68918791D1 DE68918791T DE68918791T DE68918791D1 DE 68918791 D1 DE68918791 D1 DE 68918791D1 DE 68918791 T DE68918791 T DE 68918791T DE 68918791 T DE68918791 T DE 68918791T DE 68918791 D1 DE68918791 D1 DE 68918791D1
Authority
DE
Germany
Prior art keywords
recording
photomagnetic
data
data pit
recorded
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
DE68918791T
Other languages
English (en)
Other versions
DE68918791T2 (de
Inventor
Hideki Inoue
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE68918791D1 publication Critical patent/DE68918791D1/de
Publication of DE68918791T2 publication Critical patent/DE68918791T2/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
    • 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
    • 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
    • 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

Landscapes

  • Hard Magnetic Materials (AREA)
  • Holo Graphy (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
DE68918791T 1988-02-18 1989-02-18 Photomagnetisches aufzeichnungsverfahren. Expired - Fee Related DE68918791T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63036269A JP2679079B2 (ja) 1988-02-18 1988-02-18 光磁気記録方法
PCT/JP1989/000164 WO1989007823A1 (fr) 1988-02-18 1989-02-18 Procede d'enregistrement photomagnetique

Publications (2)

Publication Number Publication Date
DE68918791D1 true DE68918791D1 (de) 1994-11-17
DE68918791T2 DE68918791T2 (de) 1995-03-16

Family

ID=12465045

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68918791T Expired - Fee Related DE68918791T2 (de) 1988-02-18 1989-02-18 Photomagnetisches aufzeichnungsverfahren.

Country Status (7)

Country Link
US (1) US5155714A (de)
EP (1) EP0358775B1 (de)
JP (1) JP2679079B2 (de)
KR (1) KR950008953B1 (de)
AT (1) ATE112880T1 (de)
DE (1) DE68918791T2 (de)
WO (1) WO1989007823A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2669532B2 (ja) * 1988-05-20 1997-10-29 株式会社日立製作所 光ディスク装置
JP2560359Y2 (ja) * 1990-05-29 1998-01-21 ソニー株式会社 光磁気記録装置のヘッド保護装置
JPH04111271A (ja) * 1990-08-31 1992-04-13 Canon Inc 光磁気ディスク駆動装置
US5345435A (en) * 1991-08-30 1994-09-06 Sony Corporation Optical disc and method for recording on optical disc
JP3558168B2 (ja) * 1992-10-30 2004-08-25 ソニー株式会社 光学式情報再生装置
US5315568A (en) * 1992-11-12 1994-05-24 International Business Machines Corporation Apparatus and method for accessing sectors of a rotating disk
US6324134B1 (en) * 1998-08-05 2001-11-27 Seiko Instruments Inc. Disk recording and reproducing apparatus
CN100426394C (zh) * 2005-03-18 2008-10-15 鸿富锦精密工业（深圳）有限公司 用于光盘记录／再现装置的光学系统
CN100489971C (zh) * 2005-09-02 2009-05-20 鸿富锦精密工业（深圳）有限公司 光学模组及采用所述光学模组的光学记录/再现装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61198454A (ja) * 1985-02-28 1986-09-02 Canon Inc 光学的情報記録方法
JPS61265754A (ja) * 1985-05-21 1986-11-25 Canon Inc 光学的情報記録方法
FR2588406B1 (fr) * 1985-10-04 1994-03-25 Thomson Csf Tete d'enregistrement thermomagnetique et procede de realisation
JPS62110644A (ja) * 1985-11-08 1987-05-21 Sharp Corp 光磁気デイスクの記録方式
JPS62162261A (ja) * 1986-01-10 1987-07-18 Hitachi Ltd 光磁気記録再生装置
BR8705409A (pt) * 1986-02-05 1987-12-22 Information Storage Inc Aparelho e processo para aumentar a capacidade de armazenamento de meios de gravacao
JP2579631B2 (ja) * 1986-03-27 1997-02-05 キヤノン株式会社 光磁気記録方法
DE3721790C2 (de) * 1987-07-01 1996-02-22 Mollenhauer Juergen Dr Rer Nat Knorpelzellspezifische Membranproteine und Bestecke zur Diagnose und Verlaufskontrolle von Autoimmunreaktionen gegen Knorpelzellen

Also Published As

Publication number Publication date
DE68918791T2 (de) 1995-03-16
EP0358775B1 (de) 1994-10-12
EP0358775A1 (de) 1990-03-21
JPH01211259A (ja) 1989-08-24
JP2679079B2 (ja) 1997-11-19
US5155714A (en) 1992-10-13
WO1989007823A1 (fr) 1989-08-24
KR950008953B1 (ko) 1995-08-09
KR900701000A (ko) 1990-08-17
ATE112880T1 (de) 1994-10-15
EP0358775A4 (en) 1991-04-03

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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