JP2003317344A - 光磁気記録方法、及び光磁気記録装置 - Google Patents

光磁気記録方法、及び光磁気記録装置

Info

Publication number
JP2003317344A
JP2003317344A JP2002126160A JP2002126160A JP2003317344A JP 2003317344 A JP2003317344 A JP 2003317344A JP 2002126160 A JP2002126160 A JP 2002126160A JP 2002126160 A JP2002126160 A JP 2002126160A JP 2003317344 A JP2003317344 A JP 2003317344A
Authority
JP
Japan
Prior art keywords
recording
magneto
magnetic field
phase
recording power
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.)
Withdrawn
Application number
JP2002126160A
Other languages
English (en)
Japanese (ja)
Other versions
JP2003317344A5 (https=
Inventor
Yasuyuki Miyaoka
康之 宮岡
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
Priority to JP2002126160A priority Critical patent/JP2003317344A/ja
Priority to US10/419,845 priority patent/US7136328B2/en
Publication of JP2003317344A publication Critical patent/JP2003317344A/ja
Publication of JP2003317344A5 publication Critical patent/JP2003317344A5/ja
Withdrawn legal-status Critical Current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
    • G11B11/1051—Recording by modulating both the magnetic field and the light beam at the transducers
    • 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
    • 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
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1267—Power calibration

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
JP2002126160A 2002-04-26 2002-04-26 光磁気記録方法、及び光磁気記録装置 Withdrawn JP2003317344A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2002126160A JP2003317344A (ja) 2002-04-26 2002-04-26 光磁気記録方法、及び光磁気記録装置
US10/419,845 US7136328B2 (en) 2002-04-26 2003-04-22 Magneto-optical recording device capable of setting the time phase of laser pulses and magnetic fields

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002126160A JP2003317344A (ja) 2002-04-26 2002-04-26 光磁気記録方法、及び光磁気記録装置

Publications (2)

Publication Number Publication Date
JP2003317344A true JP2003317344A (ja) 2003-11-07
JP2003317344A5 JP2003317344A5 (https=) 2005-09-22

Family

ID=29243791

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002126160A Withdrawn JP2003317344A (ja) 2002-04-26 2002-04-26 光磁気記録方法、及び光磁気記録装置

Country Status (2)

Country Link
US (1) US7136328B2 (https=)
JP (1) JP2003317344A (https=)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4191446B2 (ja) * 2002-08-29 2008-12-03 パイオニア株式会社 情報記録装置および情報記録方法
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
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
US20120275279A1 (en) * 2011-04-28 2012-11-01 Lsi Corporation Systems and Methods for Laser Write Control
US8503125B2 (en) 2011-05-27 2013-08-06 HGST Netherlands B.V. Channel-source laser-pulsing system architecture for thermal-assisted recording
US8908480B1 (en) 2012-09-28 2014-12-09 Western Digital Technologies, Inc. Method and system for providing an energy assisted magnetic recording disk drive using a pulsed laser light
US8891341B1 (en) 2013-03-11 2014-11-18 Western Digital Technologies, Inc. Energy assisted magnetic recording disk drive using modulated laser light
US9123355B1 (en) * 2013-09-16 2015-09-01 Seagate Technology Llc HAMR channel to preamp interface
US9064525B2 (en) 2013-11-26 2015-06-23 Western Digital Technologies, Inc. Disk drive comprising laser transmission line optimized for heat assisted magnetic recording

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5233578A (en) 1988-12-28 1993-08-03 Canon Kabushiki Kaisha Method of recording information on a recording medium having at least two magnetic layers
DE69022451T2 (de) 1989-03-09 1996-03-21 Canon Kk Magnetooptisches Aufzeichnungsgerät mit Mitteln zur Verzögerung des Eingangssignales zur Verhinderung von Bitverschiebung.
NL8901345A (nl) * 1989-05-29 1990-12-17 Philips Nv Werkwijze en inrichting voor het optekenen van signalen op een registratiedrager, alsmede een meetwerkwijze en meetinrichting voor toepassing in de optekenwerkwijze en optekeninrichting, alsmede een registratiedrager.
EP0559391B1 (en) 1992-03-03 1998-06-03 Canon Kabushiki Kaisha Magnetooptical recording/reproducing method and apparatus
US5475666A (en) * 1992-03-04 1995-12-12 Mitsubishi Denki Kabushiki Kaisha Optically modulated overwritable recording device
US5537381A (en) * 1993-09-02 1996-07-16 Sharp Kabushiki Kaisha Test-writing recording control method and test-writing recording control apparatus and optical recording medium
EP0844609A4 (en) * 1995-08-09 2007-10-17 Hitachi Ltd DEVICE FOR OPTICAL PLATES
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
DE69841191D1 (de) * 1997-07-02 2009-11-12 Sharp Kk Verfahren und Vorrichtung zur Steuerung einer Aufzeichnungsbedingung und optisches Aufzeichnungsmedium für optisches Aufzeichnungsgerät
JPH1131343A (ja) 1997-07-08 1999-02-02 Canon Inc 光磁気記録再生方法及び光磁気記録再生装置と光磁気記録方法
JP3703315B2 (ja) 1997-10-01 2005-10-05 キヤノン株式会社 光磁気記録再生方法及びその再生装置
JPH11353732A (ja) 1998-06-10 1999-12-24 Canon Inc 光磁気記録再生方法及び装置
JP2000040273A (ja) 1998-07-21 2000-02-08 Sony Corp 光磁気記録装置及び光磁気記録方法
JP2000200450A (ja) 1998-10-30 2000-07-18 Canon Inc 光磁気記録再生方法及び装置
JP2000331397A (ja) * 1999-05-19 2000-11-30 Sony Corp 光出力調整装置及び光出力調整方法
JP2002230857A (ja) * 2001-02-05 2002-08-16 Fujitsu Ltd 光記録媒体及び記憶装置

Also Published As

Publication number Publication date
US7136328B2 (en) 2006-11-14
US20030202429A1 (en) 2003-10-30

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