DE69526691D1 - Magnetooptischer Aufzeichnungsträger und Verfahren zu seiner Anwendung - Google Patents

Magnetooptischer Aufzeichnungsträger und Verfahren zu seiner Anwendung

Info

Publication number
DE69526691D1
DE69526691D1 DE69526691T DE69526691T DE69526691D1 DE 69526691 D1 DE69526691 D1 DE 69526691D1 DE 69526691 T DE69526691 T DE 69526691T DE 69526691 T DE69526691 T DE 69526691T DE 69526691 D1 DE69526691 D1 DE 69526691D1
Authority
DE
Germany
Prior art keywords
magneto
recording medium
optical recording
optical
medium
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
DE69526691T
Other languages
English (en)
Other versions
DE69526691T2 (de
Inventor
Haruhiko Izumi
Masakazu Taguchi
Tomonori Ikeya
Tsutomu Tanaka
Toshio Sugimoto
Ken Tamanoi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE69526691D1 publication Critical patent/DE69526691D1/de
Application granted granted Critical
Publication of DE69526691T2 publication Critical patent/DE69526691T2/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
    • G11B11/10595—Control of operating function
    • G11B11/10597—Adaptations for transducing various formats on the same or different carriers
    • 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
    • G11B11/10506—Recording by modulating only the light beam of 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
    • G11B11/10515—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
    • G11B11/10584—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
    • G11B11/10582—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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/26—Speed-changing arrangements; Reversing arrangements; Drive-transfer means therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/28—Speed controlling, regulating, or indicating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
DE69526691T 1994-03-15 1995-02-03 Magnetooptischer Aufzeichnungsträger und Verfahren zu seiner Anwendung Expired - Fee Related DE69526691T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4438794 1994-03-15
JP6223278A JP2771462B2 (ja) 1994-03-15 1994-09-19 光磁気記録媒体及び該媒体の使用方法

Publications (2)

Publication Number Publication Date
DE69526691D1 true DE69526691D1 (de) 2002-06-20
DE69526691T2 DE69526691T2 (de) 2002-08-29

Family

ID=26384272

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69532898T Expired - Fee Related DE69532898T2 (de) 1994-03-15 1995-02-03 Informationsaufzeichnungsverfahren auf ein magnetooptisches Medium
DE69526691T Expired - Fee Related DE69526691T2 (de) 1994-03-15 1995-02-03 Magnetooptischer Aufzeichnungsträger und Verfahren zu seiner Anwendung

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69532898T Expired - Fee Related DE69532898T2 (de) 1994-03-15 1995-02-03 Informationsaufzeichnungsverfahren auf ein magnetooptisches Medium

Country Status (4)

Country Link
US (2) US5871855A (de)
EP (2) EP1001416B1 (de)
JP (1) JP2771462B2 (de)
DE (2) DE69532898T2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9215979B2 (en) * 1992-11-17 2015-12-22 Robert Bosch Healthcare Systems, Inc. Multi-user remote health monitoring system
US6600713B1 (en) * 1996-06-26 2003-07-29 Sun Microsystems, Inc. Recording media having separate read only and read/write areas
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
EP1006515B1 (de) 1996-10-23 2002-01-16 Matsushita Electric Industrial Co., Ltd. Optische Platte
KR19980063655A (ko) * 1996-12-02 1998-10-07 이데이노부유키 자기기록매체, 자기기록재생장치 및 몰딩디스크용 메탈몰드의제조방법
CN1591634A (zh) 1996-12-19 2005-03-09 松下电器产业株式会社 光盘、信息记录方法及再生方法
JP2989575B2 (ja) * 1997-12-12 1999-12-13 三洋電機株式会社 光磁気記録媒体
US6522620B1 (en) * 1998-03-23 2003-02-18 Warner Music Group, Inc. Dual format optical disc
US6430116B1 (en) * 1999-05-11 2002-08-06 Mitsubishi Chemical Corporation Magneto-optical storage medium having first and second recording layers
DE60024972T2 (de) * 1999-09-08 2006-08-17 Mitsubishi Chemical Corp. Wiederbeschreibbare cd und deren herstellungsverfahren
JP3869363B2 (ja) * 2000-07-21 2007-01-17 富士通株式会社 光ディスク装置、光ディスクのフォーマット方法、および光ディスク
JP2004326857A (ja) 2003-04-22 2004-11-18 Sony Corp 光磁気ディスクおよびその記録再生方法
JP4533854B2 (ja) * 2006-03-06 2010-09-01 株式会社東芝 磁気記録再生装置、磁気記録方法、及び磁気記録再生方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3956769A (en) * 1974-08-12 1976-05-11 Control Data Corporation Recording system having coinciding servo and data tracks
US4467383A (en) * 1980-02-23 1984-08-21 Sharp Kabushiki Kaisha Magnetooptic memory medium
JPS63179436A (ja) * 1987-01-20 1988-07-23 Sanyo Electric Co Ltd 光磁気記録媒体
JPH0834013B2 (ja) * 1987-01-22 1996-03-29 シャープ株式会社 光磁気記録媒体
JPH0231356A (ja) * 1988-07-20 1990-02-01 Mitsubishi Electric Corp 情報記録再生装置
JPH0335446A (ja) * 1989-07-03 1991-02-15 Fujitsu Ltd 固定化可能部を有する書き換え可能型光ディスク
DE69028092T2 (de) * 1989-11-10 1997-04-03 Mitsubishi Chem Corp Magnetooptisches aufzeichnungsmedium
US5235569A (en) * 1990-06-13 1993-08-10 Nikon Corporation Magnetooptical recording method, and apparatus used in the method
US5241040A (en) * 1990-07-11 1993-08-31 International Business Machines Corporation Microwave processing
JP2884433B2 (ja) * 1990-07-11 1999-04-19 三菱レイヨン株式会社 ４―ヒドロキシブチルアクリレート又はメタクリレートの製造法
US5132954A (en) * 1990-09-24 1992-07-21 International Business Machines Corporation Controls for optical disk relating to accessing and utilization of such disk
JPH05290420A (ja) * 1992-04-06 1993-11-05 Hitachi Ltd 光磁気ディスクとその記録再生方法及び装置
DE4220486A1 (de) * 1992-06-23 1994-01-05 Thomson Brandt Gmbh Aufzeichnung und Wiedergabe von Informationen bei ROM-RAM-Speichermedien

Also Published As

Publication number Publication date
JPH07307041A (ja) 1995-11-21
DE69532898T2 (de) 2004-08-26
EP0673025A1 (de) 1995-09-20
US5871855A (en) 1999-02-16
EP0673025B1 (de) 2002-05-15
US6103407A (en) 2000-08-15
EP1001416B1 (de) 2004-04-14
DE69532898D1 (de) 2004-05-19
DE69526691T2 (de) 2002-08-29
EP1001416A1 (de) 2000-05-17
JP2771462B2 (ja) 1998-07-02

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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