JPH10149595A - 磁壁を移動させて情報の再生を行う情報再生装置 - Google Patents

磁壁を移動させて情報の再生を行う情報再生装置

Info

Publication number
JPH10149595A
JPH10149595A JP9238284A JP23828497A JPH10149595A JP H10149595 A JPH10149595 A JP H10149595A JP 9238284 A JP9238284 A JP 9238284A JP 23828497 A JP23828497 A JP 23828497A JP H10149595 A JPH10149595 A JP H10149595A
Authority
JP
Japan
Prior art keywords
information
light spot
reproducing
domain wall
light
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.)
Pending
Application number
JP9238284A
Other languages
English (en)
Japanese (ja)
Other versions
JPH10149595A5 (enExample
Inventor
Masakuni Yamamoto
昌邦 山本
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 JP9238284A priority Critical patent/JPH10149595A/ja
Priority to US08/931,369 priority patent/US5956296A/en
Publication of JPH10149595A publication Critical patent/JPH10149595A/ja
Publication of JPH10149595A5 publication Critical patent/JPH10149595A5/ja
Pending 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
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor

Landscapes

  • Optical Head (AREA)
JP9238284A 1996-09-18 1997-09-03 磁壁を移動させて情報の再生を行う情報再生装置 Pending JPH10149595A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP9238284A JPH10149595A (ja) 1996-09-18 1997-09-03 磁壁を移動させて情報の再生を行う情報再生装置
US08/931,369 US5956296A (en) 1996-09-18 1997-09-16 Information reproducing apparatus for reproducing information by magnetic wall movement

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP24625596 1996-09-18
JP8-246255 1996-09-18
JP9238284A JPH10149595A (ja) 1996-09-18 1997-09-03 磁壁を移動させて情報の再生を行う情報再生装置

Publications (2)

Publication Number Publication Date
JPH10149595A true JPH10149595A (ja) 1998-06-02
JPH10149595A5 JPH10149595A5 (enExample) 2004-10-21

Family

ID=26533631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9238284A Pending JPH10149595A (ja) 1996-09-18 1997-09-03 磁壁を移動させて情報の再生を行う情報再生装置

Country Status (2)

Country Link
US (1) US5956296A (enExample)
JP (1) JPH10149595A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100706732B1 (ko) * 1999-04-20 2007-04-13 소니 가부시끼 가이샤 데이터 재생 장치 및 방법

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10275369A (ja) 1997-01-31 1998-10-13 Canon Inc 情報記録媒体の製造方法および該方法による情報記録媒体
JPH11134732A (ja) 1997-08-29 1999-05-21 Canon Inc 情報記録再生方法
JPH11144341A (ja) * 1997-11-04 1999-05-28 Comets:Kk 磁気光学データ記録再生装置および磁気光学記録媒体
US6298015B1 (en) 1998-06-03 2001-10-02 Canon Kabushiki Kaisha Magneto-optical reproducing method using a magnified magnetic domain
JP3416548B2 (ja) 1998-10-16 2003-06-16 キヤノン株式会社 磁性記録媒体、再生方法および再生装置
JP2001143338A (ja) 1998-12-21 2001-05-25 Canon Inc 光磁気再生装置
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
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
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
US7102921B2 (en) * 2004-05-11 2006-09-05 Hewlett-Packard Development Company, L.P. Magnetic memory device
JP2005346843A (ja) * 2004-06-03 2005-12-15 Canon Inc 光学的情報記録再生方法及び装置
US7599272B2 (en) * 2004-11-22 2009-10-06 Canon Kabushiki Kaisha Method and apparatus for recording and reproducing multi-level information
US7804754B2 (en) 2005-08-31 2010-09-28 Canon Kabushiki Kaisha Optical information recording/reproducing method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2858455B2 (ja) * 1990-11-27 1999-02-17 キヤノン株式会社 光学的情報記録装置
JPH0594624A (ja) * 1991-03-28 1993-04-16 Olympus Optical Co Ltd 光学式再生方法
JP3332458B2 (ja) * 1993-04-02 2002-10-07 キヤノン株式会社 光磁気記録媒体
JP3078145B2 (ja) * 1993-04-23 2000-08-21 キヤノン株式会社 光磁気記録媒体の製造方法
ES2161240T3 (es) * 1993-11-17 2001-12-01 Canon Kk Aparato de grabacion/reproduccion optica de informacion y metodo con funcion de ajuste de la potencia de reproduccion.
EP0654786B1 (en) * 1993-11-24 2002-03-13 Mitsubishi Chemical Corporation Magneto-optical recording medium and a method of reading-out the same
JP3226418B2 (ja) * 1994-05-26 2001-11-05 キヤノン株式会社 熱的記録媒体の記録方法
JPH08180492A (ja) * 1994-12-26 1996-07-12 Sharp Corp 光ピックアップ
JP3049482B2 (ja) * 1995-06-09 2000-06-05 富士通株式会社 光磁気記録媒体及びその再生方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100706732B1 (ko) * 1999-04-20 2007-04-13 소니 가부시끼 가이샤 데이터 재생 장치 및 방법

Also Published As

Publication number Publication date
US5956296A (en) 1999-09-21

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