DE69836571D1 - Magnetooptisches Speichermedium und dazugehöriges Wiedergabeverfahren - Google Patents

Magnetooptisches Speichermedium und dazugehöriges Wiedergabeverfahren

Info

Publication number
DE69836571D1
DE69836571D1 DE69836571T DE69836571T DE69836571D1 DE 69836571 D1 DE69836571 D1 DE 69836571D1 DE 69836571 T DE69836571 T DE 69836571T DE 69836571 T DE69836571 T DE 69836571T DE 69836571 D1 DE69836571 D1 DE 69836571D1
Authority
DE
Germany
Prior art keywords
magneto
storage medium
optical storage
reproduction method
associated 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 - Lifetime
Application number
DE69836571T
Other languages
English (en)
Other versions
DE69836571T2 (de
Inventor
Akira Takahashi
Michinobu Mieda
Naoyasu Iketani
Go Mori
Junsaku Nakajima
Yoshiteru Murakami
Junji Hirokane
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Publication of DE69836571D1 publication Critical patent/DE69836571D1/de
Application granted granted Critical
Publication of DE69836571T2 publication Critical patent/DE69836571T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2525—Magneto-optical [MO] discs
DE69836571T 1997-03-06 1998-03-06 Magnetooptisches Speichermedium und dazugehöriges Wiedergabeverfahren Expired - Lifetime DE69836571T2 (de)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP09051372 1997-03-06
JP5137297 1997-03-06
JP6368097 1997-03-18
JP6368097 1997-03-18
JP6944697 1997-03-24
JP6944697 1997-03-24
JP23222797 1997-08-28
JP23222797 1997-08-28

Publications (2)

Publication Number Publication Date
DE69836571D1 true DE69836571D1 (de) 2007-01-11
DE69836571T2 DE69836571T2 (de) 2007-10-04

Family

ID=27462635

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69839787T Expired - Lifetime DE69839787D1 (de) 1997-03-06 1998-03-06 Magneto-optisches Speichermedium und dazugehöriges Wiedergabeverfahren
DE69836571T Expired - Lifetime DE69836571T2 (de) 1997-03-06 1998-03-06 Magnetooptisches Speichermedium und dazugehöriges Wiedergabeverfahren

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69839787T Expired - Lifetime DE69839787D1 (de) 1997-03-06 1998-03-06 Magneto-optisches Speichermedium und dazugehöriges Wiedergabeverfahren

Country Status (5)

Country Link
US (2) US6147939A (de)
EP (3) EP0863504B1 (de)
KR (1) KR100334413B1 (de)
CN (2) CN1187746C (de)
DE (2) DE69839787D1 (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000013177A1 (fr) * 1998-08-31 2000-03-09 Sanyo Electric Co., Ltd. Support d'enregistrement magneto-optique
JP3568787B2 (ja) * 1998-09-08 2004-09-22 シャープ株式会社 光磁気記録媒体及び再生装置
DE19943135B4 (de) * 1998-09-10 2010-05-12 Sharp K.K. Magnetooptischer Aufzeichnungsträger
JP3519293B2 (ja) * 1998-11-20 2004-04-12 シャープ株式会社 光磁気記録媒体、光磁気記録媒体の再生方法、光磁気記録再生装置
JP3519295B2 (ja) * 1998-11-30 2004-04-12 シャープ株式会社 光磁気記録媒体
JP2000311352A (ja) * 1999-04-26 2000-11-07 Sharp Corp 光ディスク及び光記録再生装置
JP3626050B2 (ja) * 1999-11-02 2005-03-02 シャープ株式会社 光磁気記録媒体及びその記録方法
JP2001307393A (ja) * 2000-04-25 2001-11-02 Canon Inc 光磁気再生装置
JP2002025138A (ja) * 2000-07-13 2002-01-25 National Institute Of Advanced Industrial & Technology 光記録媒体および光記録再生装置
US6826131B2 (en) 2000-10-11 2004-11-30 Matsushita Electric Industrial Co., Ltd. Magneto-optical recording medium having multiple magnetic layers
US6579635B2 (en) 2000-10-12 2003-06-17 International Business Machines Corporation Smoothing and stabilization of domain walls in perpendicularly polarized magnetic films
JP2002319195A (ja) 2001-04-19 2002-10-31 Matsushita Electric Ind Co Ltd 光ディスク及びそのトラック間の磁気的遮断処理方法
JP2002319196A (ja) 2001-04-19 2002-10-31 Matsushita Electric Ind Co Ltd 光ディスクおよびそのトラック間の磁気的遮断処理方法
JP2002329352A (ja) * 2001-04-27 2002-11-15 Sharp Corp 光磁気記録媒体
CN100468542C (zh) * 2002-02-25 2009-03-11 富士通株式会社 磁光记录介质以及记录/再现设备
JP2003338053A (ja) * 2002-05-20 2003-11-28 Canon Inc 光記録媒体
EP1543504A2 (de) * 2002-09-18 2005-06-22 Koninklijke Philips Electronics N.V. Magnetooptisches speichermedium
JP2005050400A (ja) * 2003-07-30 2005-02-24 Canon Inc 光磁気記録媒体
US20070054152A1 (en) * 2003-11-24 2007-03-08 Electronics And Telecommunications Research Institute Recording layer of magneto-optical storage medium having sublayer and method of fabricating the same
KR100868761B1 (ko) * 2006-11-20 2008-11-13 삼성전자주식회사 자구벽 이동을 이용한 정보 저장 매체
CN105840042B (zh) * 2016-03-30 2017-06-30 乐视汽车（北京）有限公司 车库门控制方法及装置
CN107523796B (zh) * 2017-07-21 2019-07-05 华侨大学 一种具有间隔层的稀土-过渡合金复合材料的制备方法

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2110459B (en) * 1982-11-08 1985-08-14 Kokusai Denshin Denwa Co Ltd Magneto-optical recording system
JP2805746B2 (ja) * 1987-11-30 1998-09-30 ソニー株式会社 光磁気記録媒体の信号再生方法
CA2060547C (en) * 1991-02-08 2002-04-23 Masumi Ohta System and method of reproducing signals recorded on a magneto-optic recording medium
EP1143434A3 (de) * 1992-08-28 2001-12-12 Canon Kabushiki Kaisha Magnetooptisches Aufzeichnungsmedium und Informationsaufzeichungs- und Wiedergabeverfahren damit
JP3072812B2 (ja) * 1993-04-08 2000-08-07 キヤノン株式会社 光磁気記録媒体及び該媒体の情報再生方法
JPH06325418A (ja) * 1993-05-12 1994-11-25 Hitachi Maxell Ltd 光磁気記録媒体
JP3375694B2 (ja) * 1993-07-19 2003-02-10 パイオニア株式会社 光磁気ディスク及び光磁気ディスク再生装置
JP3088619B2 (ja) * 1994-01-17 2000-09-18 富士通株式会社 光磁気記録媒体及び該媒体に記録された情報の再生方法
JPH07244876A (ja) * 1994-03-01 1995-09-19 Sharp Corp 光磁気記録媒体及び光磁気記録再生方法
JP3230388B2 (ja) * 1994-03-15 2001-11-19 富士通株式会社 光磁気記録媒体及び該媒体に記録された情報の再生方法
JPH07254175A (ja) * 1994-03-16 1995-10-03 Canon Inc 光磁気記録媒体および該媒体を用いた情報記録再生方法
JP3380621B2 (ja) * 1994-06-24 2003-02-24 日立マクセル株式会社 光磁気記録媒体の再生方法、光磁気記録媒体およびそれを用いた光磁気記録再生装置
JP3426034B2 (ja) * 1994-07-20 2003-07-14 シャープ株式会社 光磁気記録媒体および記録再生方法並びに光磁気記録媒体の製造方法
JPH08106662A (ja) * 1994-10-05 1996-04-23 Teijin Ltd 光磁気記録媒体
JPH08124229A (ja) 1994-10-19 1996-05-17 Sharp Corp 光磁気記録媒体
JP3172051B2 (ja) 1994-12-27 2001-06-04 シャープ株式会社 光磁気記録媒体
DE19536796B4 (de) * 1994-10-19 2005-11-24 Sharp K.K. Magnetooptisches Aufzeichnungsmedium
JP3169790B2 (ja) * 1995-03-27 2001-05-28 シャープ株式会社 光磁気記録媒体及びその記録再生方法
JP3445023B2 (ja) * 1995-06-08 2003-09-08 シャープ株式会社 光磁気記録媒体およびその再生方法並びに記録方法
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
JP3781823B2 (ja) * 1996-05-27 2006-05-31 シャープ株式会社 光磁気記録媒体及びその再生方法

Also Published As

Publication number Publication date
US6147939A (en) 2000-11-14
CN1577557A (zh) 2005-02-09
EP0863504B1 (de) 2008-07-30
KR19980079926A (ko) 1998-11-25
DE69839787D1 (de) 2008-09-11
EP0863504A3 (de) 2000-08-30
CN1201227A (zh) 1998-12-09
EP1420400B1 (de) 2006-11-29
CN100338672C (zh) 2007-09-19
EP1420400A1 (de) 2004-05-19
US6272077B1 (en) 2001-08-07
EP0863504A2 (de) 1998-09-09
EP1422708A1 (de) 2004-05-26
DE69836571T2 (de) 2007-10-04
KR100334413B1 (ko) 2002-06-20
CN1187746C (zh) 2005-02-02

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