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DE69830549D1 - Signalwiedergabeverfahren das die Verschiebung der Wand einer magnetischen Domäne benutzt und dazugehöriges Gerät - Google Patents

Signalwiedergabeverfahren das die Verschiebung der Wand einer magnetischen Domäne benutzt und dazugehöriges Gerät

Info

Publication number
DE69830549D1
DE69830549D1 DE69830549T DE69830549T DE69830549D1 DE 69830549 D1 DE69830549 D1 DE 69830549D1 DE 69830549 T DE69830549 T DE 69830549T DE 69830549 T DE69830549 T DE 69830549T DE 69830549 D1 DE69830549 D1 DE 69830549D1
Authority
DE
Germany
Prior art keywords
displacement
wall
magnetic domain
reproduction method
signal reproduction
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
DE69830549T
Other languages
English (en)
Other versions
DE69830549T2 (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
Application granted granted Critical
Publication of DE69830549D1 publication Critical patent/DE69830549D1/de
Publication of DE69830549T2 publication Critical patent/DE69830549T2/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
    • 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
    • G11B11/10589—Details
    • G11B11/10593—Details for improving read-out properties, e.g. polarisation of light
DE69830549T 1997-09-01 1998-09-01 Signalwiedergabeverfahren das die Verschiebung der Wand einer magnetischen Domäne benutzt und dazugehöriges Gerät Expired - Fee Related DE69830549T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP23588597A JP3647219B2 (ja) 1997-09-01 1997-09-01 磁性記録媒体の信号再生方法
JP23588597 1997-09-01

Publications (2)

Publication Number Publication Date
DE69830549D1 true DE69830549D1 (de) 2005-07-21
DE69830549T2 DE69830549T2 (de) 2006-05-11

Family

ID=16992692

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69830549T Expired - Fee Related DE69830549T2 (de) 1997-09-01 1998-09-01 Signalwiedergabeverfahren das die Verschiebung der Wand einer magnetischen Domäne benutzt und dazugehöriges Gerät

Country Status (4)

Country Link
US (1) US6345016B1 (de)
EP (1) EP0899727B1 (de)
JP (1) JP3647219B2 (de)
DE (1) DE69830549T2 (de)

Families Citing this family (19)

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Publication number Priority date Publication date Assignee Title
WO1999039342A1 (fr) * 1998-01-30 1999-08-05 Sony Corporation Support d'enregistrement magneto-optique et procede de reproduction de signaux
US6519211B1 (en) 1999-04-01 2003-02-11 Matsushita Electric Industrial Co., Ltd. Magneto-optical recording medium having magnetic domain shrinks and disappears
JP2001307393A (ja) * 2000-04-25 2001-11-02 Canon Inc 光磁気再生装置
JP2002157792A (ja) 2000-11-15 2002-05-31 Canon Inc 光磁気記録媒体及び該媒体のための再生方法、再生装置
JP2002208193A (ja) 2001-01-09 2002-07-26 Canon Inc 光磁気記録媒体およびその情報再生方法
US6485609B1 (en) 2001-03-08 2002-11-26 Celanese International Corporation Ink jet printing paper incorporating amine functional poly(vinyl alcohol)
JP2002319198A (ja) * 2001-04-19 2002-10-31 Matsushita Electric Ind Co Ltd 光磁気記録媒体およびその製造方法と製造装置
KR20040023711A (ko) * 2001-08-03 2004-03-18 코닌클리케 필립스 일렉트로닉스 엔.브이. 재기록가능한 광학 기록 시스템
US20030108721A1 (en) * 2001-12-11 2003-06-12 Fullerton Eric E. Thermally - assisted magnetic recording disk with recording layer exchange- coupled to antiferromagnetic-to-ferromagnetic switching layer
JP2003257100A (ja) * 2001-12-27 2003-09-12 Canon Inc 磁壁移動型光磁気記録媒体の記録方法
US7092318B2 (en) 2002-01-11 2006-08-15 Victor Company Of Japan, Limited Magneto-optical recording medium having a plurality of magnetic layers
JP2003272263A (ja) 2002-01-11 2003-09-26 Victor Co Of Japan Ltd 光磁気記録媒体
US7161755B1 (en) * 2002-04-08 2007-01-09 Maxtor Corporation Increasing areal density in magnetic recording media
JP2003317337A (ja) * 2002-04-26 2003-11-07 Canon Inc 光磁気記録媒体及び記録方法
JP4095364B2 (ja) * 2002-07-19 2008-06-04 キヤノン株式会社 磁壁移動型光磁気記録媒体の記録再生装置
US7145847B2 (en) * 2002-08-28 2006-12-05 Canon Kabushiki Kaisha Annealed optical information recording medium and optical information recording/reproducing apparatus for the same
JP2004192677A (ja) * 2002-12-09 2004-07-08 Canon Inc 磁壁移動型光磁気記録媒体
JP2005025889A (ja) * 2003-07-04 2005-01-27 Canon Inc 光学的記録媒体への情報記録方法
US12254907B2 (en) * 2023-03-31 2025-03-18 Seagate Technology Llc Dual layer graded curie temperature HAMR media

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960003420B1 (ko) * 1986-07-08 1996-03-13 캐논 가부시끼가이샤 2층이상의 자성막을 가지고 중복기록이 가능한 광자기 기록매체 및 그의 매체를 사용한 기록방법
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
JP2935375B2 (ja) 1990-11-22 1999-08-16 キヤノン株式会社 光磁気記録再生装置
JP3332458B2 (ja) 1993-04-02 2002-10-07 キヤノン株式会社 光磁気記録媒体
EP1426944A3 (de) 1993-04-02 2008-01-23 Canon Kabushiki Kaisha Verfahren zur Herstellung einem magneto-optischen Aufzeichnungsmedium
JPH08287537A (ja) 1995-04-14 1996-11-01 Canon Inc 光磁気記録媒体及び該媒体を用いた情報再生方法
JPH08293135A (ja) 1995-04-21 1996-11-05 Canon Inc 光磁気記録媒体および光磁気記録再生方法
JPH0954993A (ja) 1995-08-15 1997-02-25 Canon Inc 光磁気記録媒体及び該媒体の情報再生方法
JPH10149592A (ja) * 1996-09-19 1998-06-02 Canon Inc 磁壁移動を利用して情報を再生する光磁気記録媒体および信号再生方法
JP3332750B2 (ja) 1996-09-19 2002-10-07 キヤノン株式会社 磁気記録媒体、記録方法、再生方法、及び、磁性記録媒体の製造方法
US5995472A (en) * 1997-05-06 1999-11-30 Canon Kabushiki Kaisha Laser beam forming temperature distribution of two peaks on a magneto-optical recording medium
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
JPH1186203A (ja) * 1997-09-03 1999-03-30 Canon Inc 磁気ヘッド駆動装置及び光磁気記録装置
JPH11162035A (ja) * 1997-09-26 1999-06-18 Canon Inc 光磁気情報再生方法、光磁気情報再生装置及び情報記録方法

Also Published As

Publication number Publication date
DE69830549T2 (de) 2006-05-11
JPH1186372A (ja) 1999-03-30
EP0899727A3 (de) 2000-03-15
US6345016B1 (en) 2002-02-05
EP0899727B1 (de) 2005-06-15
JP3647219B2 (ja) 2005-05-11
EP0899727A2 (de) 1999-03-03

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Legal Events

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8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee