DE69022451D1 - Magnetooptisches Aufzeichnungsgerät mit Mitteln zur Verzögerung des Eingangssignales zur Verhinderung von Bitverschiebung. - Google Patents

Magnetooptisches Aufzeichnungsgerät mit Mitteln zur Verzögerung des Eingangssignales zur Verhinderung von Bitverschiebung.

Info

Publication number
DE69022451D1
DE69022451D1 DE69022451T DE69022451T DE69022451D1 DE 69022451 D1 DE69022451 D1 DE 69022451D1 DE 69022451 T DE69022451 T DE 69022451T DE 69022451 T DE69022451 T DE 69022451T DE 69022451 D1 DE69022451 D1 DE 69022451D1
Authority
DE
Germany
Prior art keywords
delaying
magneto
input signal
recording device
optical recording
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
DE69022451T
Other languages
English (en)
Other versions
DE69022451T2 (de
Inventor
Mitsuhiro Otokawa
Shunpei Kimura
Yasuyuki Miyaoka
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
Priority claimed from JP5520789A external-priority patent/JP2664463B2/ja
Priority claimed from JP5520689A external-priority patent/JP2670135B2/ja
Priority claimed from JP5624689A external-priority patent/JPH02236839A/ja
Priority claimed from JP17714789A external-priority patent/JPH0344846A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE69022451D1 publication Critical patent/DE69022451D1/de
Application granted granted Critical
Publication of DE69022451T2 publication Critical patent/DE69022451T2/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
    • G11B11/10504—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
    • G11B11/10502—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
    • G11B11/1053—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 to compensate for the magnetic domain drift or time shift
DE69022451T 1989-03-09 1990-03-08 Magnetooptisches Aufzeichnungsgerät mit Mitteln zur Verzögerung des Eingangssignales zur Verhinderung von Bitverschiebung. Expired - Fee Related DE69022451T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP5520789A JP2664463B2 (ja) 1989-03-09 1989-03-09 光磁気記録再生装置
JP5520689A JP2670135B2 (ja) 1989-03-09 1989-03-09 光磁気記録再生装置
JP5624689A JPH02236839A (ja) 1989-03-10 1989-03-10 光磁気記録再生装置
JP17714789A JPH0344846A (ja) 1989-07-11 1989-07-11 光磁気記録装置

Publications (2)

Publication Number Publication Date
DE69022451D1 true DE69022451D1 (de) 1995-10-26
DE69022451T2 DE69022451T2 (de) 1996-03-21

Family

ID=27463164

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69022451T Expired - Fee Related DE69022451T2 (de) 1989-03-09 1990-03-08 Magnetooptisches Aufzeichnungsgerät mit Mitteln zur Verzögerung des Eingangssignales zur Verhinderung von Bitverschiebung.

Country Status (3)

Country Link
US (1) US5091897A (de)
EP (1) EP0387052B1 (de)
DE (1) DE69022451T2 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2847722B2 (ja) * 1988-06-24 1999-01-20 ソニー株式会社 光磁気記録装置
JPH03214441A (ja) * 1990-01-18 1991-09-19 Canon Inc 光磁気記録装置
JPH04132059A (ja) * 1990-09-20 1992-05-06 Mitsubishi Electric Corp 光磁気ディスク装置
DE4032871A1 (de) * 1990-10-17 1992-04-23 Bosch Gmbh Robert Schaltungsanordnung zur abtastung optischer aufzeichnungstraeger
US5189567A (en) * 1991-08-26 1993-02-23 Eastman Kodak Company High speed switching circuit for controlling current flow in a bridge circuit coil for use in a magneto-optic direct overwrite system
US5345435A (en) * 1991-08-30 1994-09-06 Sony Corporation Optical disc and method for recording on optical disc
US5388085A (en) * 1993-03-03 1995-02-07 International Business Machines Corporation Apparatus and method for accessing sectors of a rotating disk
JPH0969246A (ja) * 1995-08-30 1997-03-11 Canon Inc 光学的情報記録再生装置
JPH1092037A (ja) * 1996-09-19 1998-04-10 Canon Inc 光磁気記録再生方法及び光磁気記録再生装置
JPH10334534A (ja) * 1997-05-28 1998-12-18 Canon Inc 光磁気記録再生方法及び光磁気記録再生装置
JPH11134732A (ja) 1997-08-29 1999-05-21 Canon Inc 情報記録再生方法
JPH11353732A (ja) 1998-06-10 1999-12-24 Canon Inc 光磁気記録再生方法及び装置
JP2000200450A (ja) 1998-10-30 2000-07-18 Canon Inc 光磁気記録再生方法及び装置
JP2000149344A (ja) * 1998-11-05 2000-05-30 Hitachi Ltd 情報記録方法、情報記録再生方法、情報再生方法、情報記録装置、情報記録再生装置及び情報再生装置
JP2001023254A (ja) 1999-07-02 2001-01-26 Canon Inc 光磁気記録テスト方法及び光磁気記録再生装置
JP2003317344A (ja) * 2002-04-26 2003-11-07 Canon Inc 光磁気記録方法、及び光磁気記録装置
JP2005011385A (ja) * 2003-06-16 2005-01-13 Canon Inc 磁区拡大型光磁気再生方法及び装置
TWI250516B (en) * 2004-04-22 2006-03-01 Lite On It Corp Laser power control method of optical disc recorder
JP2007122815A (ja) * 2005-10-28 2007-05-17 Canon Inc 光ディスク装置の球面収差及びフォーカスオフセット調整方法、それを用いた光ディスク装置
JP2008016165A (ja) * 2006-07-10 2008-01-24 Canon Inc 記録パワー調整方法及び光ディスク装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5753803A (en) * 1980-09-17 1982-03-31 Ricoh Co Ltd Floppy disk device
JPS60205859A (ja) * 1984-03-30 1985-10-17 Sharp Corp フロツピ−デイスクドライブ制御装置
JPH0619863B2 (ja) * 1984-06-13 1994-03-16 株式会社日立製作所 光磁気情報記憶方法及び装置
JPH0664768B2 (ja) * 1985-09-18 1994-08-22 松下電器産業株式会社 記録再生装置
US4872078A (en) * 1986-04-24 1989-10-03 International Business Machines Corporation Method and apparatus for encoding and direct overwriting of magneto-optic data
JP2575120B2 (ja) * 1986-07-31 1997-01-22 ソニー株式会社 光磁気記録装置
JP2687350B2 (ja) * 1987-05-28 1997-12-08 ソニー株式会社 光磁気ディスク再生装置
DE3728237A1 (de) * 1987-08-25 1989-03-09 Philips Patentverwaltung Verfahren zum schreiben von binaerer information in eine magnetooptische speicherschicht und anordnung zur durchfuehrung des verfahrens
JP2647875B2 (ja) * 1987-12-25 1997-08-27 株式会社日立製作所 光磁気信号記録再生方法

Also Published As

Publication number Publication date
EP0387052A3 (en) 1990-12-05
EP0387052A2 (de) 1990-09-12
EP0387052B1 (de) 1995-09-20
US5091897A (en) 1992-02-25
DE69022451T2 (de) 1996-03-21

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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