DE69739806D1 - Magnetooptisches Aufzeichnungsmedium - Google Patents

Magnetooptisches Aufzeichnungsmedium

Info

Publication number
DE69739806D1
DE69739806D1 DE69739806T DE69739806T DE69739806D1 DE 69739806 D1 DE69739806 D1 DE 69739806D1 DE 69739806 T DE69739806 T DE 69739806T DE 69739806 T DE69739806 T DE 69739806T DE 69739806 D1 DE69739806 D1 DE 69739806D1
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 - Lifetime
Application number
DE69739806T
Other languages
English (en)
Inventor
Junji Hirokane
Junichiro Nakayama
Junsaku Nakajima
Akira Takahashi
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
Application granted granted Critical
Publication of DE69739806D1 publication Critical patent/DE69739806D1/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
    • 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
    • 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
DE69739806T 1996-04-22 1997-04-21 Magnetooptisches Aufzeichnungsmedium Expired - Lifetime DE69739806D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10005396A JP3539531B2 (ja) 1996-04-22 1996-04-22 光磁気記録媒体

Publications (1)

Publication Number Publication Date
DE69739806D1 true DE69739806D1 (de) 2010-04-29

Family

ID=14263753

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69739806T Expired - Lifetime DE69739806D1 (de) 1996-04-22 1997-04-21 Magnetooptisches Aufzeichnungsmedium

Country Status (5)

Country Link
US (1) US6042954A (de)
EP (1) EP0803870B1 (de)
JP (1) JP3539531B2 (de)
KR (1) KR100228969B1 (de)
DE (1) DE69739806D1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3545133B2 (ja) 1996-07-23 2004-07-21 シャープ株式会社 光磁気記録媒体の再生方法及び光磁気記録媒体
US6504797B1 (en) * 1999-06-25 2003-01-07 Matsushita Electric Industrial Co., Ltd. Magneto-optical recording medium having multiple magnetic layers and reproducing method thereof
JP2002170292A (ja) * 2000-12-01 2002-06-14 Fujitsu Ltd 光磁気記録媒体及びその再生方法
EP1511028A4 (de) * 2002-05-31 2008-03-19 Fujitsu Ltd Optisches aufzeichnungsmedium und optische speichereinrichtung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6032331B2 (ja) * 1980-03-12 1985-07-27 ケイディディ株式会社 磁気光学記録媒体
JPS5984358A (ja) * 1982-11-04 1984-05-16 Seiko Instr & Electronics Ltd 光磁気記録媒体
JPS6122608A (ja) * 1984-07-11 1986-01-31 Hitachi Ltd 光磁気記録材料
JPS61144742A (ja) * 1984-12-17 1986-07-02 Sony Corp 光磁気記録媒体
JPH0782670B2 (ja) * 1985-07-12 1995-09-06 株式会社日立製作所 光磁気記録媒体
JP2839783B2 (ja) * 1991-04-17 1998-12-16 シャープ株式会社 光磁気記録媒体、再生装置及び再生方法
EP0974961B1 (de) * 1992-11-06 2003-04-02 Sharp Kabushiki Kaisha Magnetooptischer Aufzeichnungsträger und Verfahren zur Aufzeichnung und Wiedergabe und für den magnetooptischen Aufzeichnungsträger ausgebildetes optische Kopf
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
US5644566A (en) * 1994-05-24 1997-07-01 Sharp Kabushiki Kaisha Magneto-optical recording medium
JP3545133B2 (ja) * 1996-07-23 2004-07-21 シャープ株式会社 光磁気記録媒体の再生方法及び光磁気記録媒体
JP3400251B2 (ja) * 1996-07-30 2003-04-28 シャープ株式会社 光磁気記録媒体の再生方法及び光磁気記録媒体

Also Published As

Publication number Publication date
EP0803870A2 (de) 1997-10-29
JPH09288853A (ja) 1997-11-04
KR100228969B1 (ko) 1999-11-01
EP0803870B1 (de) 2010-03-17
KR970071568A (ko) 1997-11-07
US6042954A (en) 2000-03-28
EP0803870A3 (de) 1998-08-12
JP3539531B2 (ja) 2004-07-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition