KR100356970B1 - 자기광학기록매체,데이터비트판독방법및데이터비트직접기록방법 - Google Patents

자기광학기록매체,데이터비트판독방법및데이터비트직접기록방법 Download PDF

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Publication number
KR100356970B1
KR100356970B1 KR1019940018402A KR19940018402A KR100356970B1 KR 100356970 B1 KR100356970 B1 KR 100356970B1 KR 1019940018402 A KR1019940018402 A KR 1019940018402A KR 19940018402 A KR19940018402 A KR 19940018402A KR 100356970 B1 KR100356970 B1 KR 100356970B1
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South Korea
Prior art keywords
layers
magneto
multilayer
species
recording medium
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KR1019940018402A
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English (en)
Korean (ko)
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KR950006718A (ko
Inventor
한스빌렘반케스테르엔
오케-얀무드
요한네스마티누스케르크호프
Original Assignee
코닌클리케 필립스 일렉트로닉스 엔.브이.
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Publication of KR950006718A publication Critical patent/KR950006718A/ko
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    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record 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
    • G11B11/10502—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
    • G11B11/10517—Overwriting or erasing
    • G11B11/10519—Direct overwriting, i.e. performing erasing and recording using the same transducing means
    • G11B11/10521—Direct overwriting, i.e. performing erasing and recording using the same transducing means using a single light spot
    • 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
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
KR1019940018402A 1993-08-04 1994-07-28 자기광학기록매체,데이터비트판독방법및데이터비트직접기록방법 Expired - Fee Related KR100356970B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP93202295.7 1993-08-04
EP93202295 1993-08-04

Publications (2)

Publication Number Publication Date
KR950006718A KR950006718A (ko) 1995-03-21
KR100356970B1 true KR100356970B1 (ko) 2003-01-10

Family

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Application Number Title Priority Date Filing Date
KR1019940018402A Expired - Fee Related KR100356970B1 (ko) 1993-08-04 1994-07-28 자기광학기록매체,데이터비트판독방법및데이터비트직접기록방법

Country Status (6)

Country Link
US (1) US5756202A (enExample)
JP (1) JPH0765419A (enExample)
KR (1) KR100356970B1 (enExample)
DE (1) DE69421234T2 (enExample)
SG (1) SG49286A1 (enExample)
TW (1) TW241359B (enExample)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6261681B1 (en) 1998-03-20 2001-07-17 Asahi Komag Co., Ltd. Magnetic recording medium
US6753101B1 (en) 1999-06-08 2004-06-22 Fujitsu Limited Magnetic recording medium, magnetic storage apparatus, recording method and method of producing magnetic recording medium
US6602612B2 (en) 1999-06-08 2003-08-05 Fujitsu Limited Magnetic recording medium and magnetic storage apparatus
US6645646B1 (en) 1999-06-08 2003-11-11 Fujitsu Limited Magnetic recording medium and magnetic storage apparatus
US6689495B1 (en) 1999-06-08 2004-02-10 Fujitsu Limited Magnetic recording medium and magnetic storage apparatus
US6821652B1 (en) 1999-06-08 2004-11-23 Fujitsu Limited Magnetic recording medium and magnetic storage apparatus
US6280813B1 (en) * 1999-10-08 2001-08-28 International Business Machines Corporation Magnetic recording media with antiferromagnetically coupled ferromagnetic films as the recording layer
US6326637B1 (en) * 1999-10-18 2001-12-04 International Business Machines Corporation Antiferromagnetically exchange-coupled structure for magnetic tunnel junction device
WO2001083582A1 (fr) 2000-04-27 2001-11-08 Teijin Limited Procede de production en continu de polyester
US6759149B1 (en) 2000-07-25 2004-07-06 Seagate Technology Llc Laminated medium with antiferromagnetic stabilization layers
US20020192506A1 (en) 2001-06-04 2002-12-19 International Business Machines Corporation `Thermal Spring' magnetic recording media for writing using magnetic and thermal gradients
US6899959B2 (en) * 2002-02-12 2005-05-31 Komag, Inc. Magnetic media with improved exchange coupling
KR20050029198A (ko) * 2002-07-05 2005-03-24 코닌클리케 필립스 일렉트로닉스 엔.브이. 반강자성적으로 결합된 자구확장 이중층 구조를 갖는광자기 기록매체
KR100499136B1 (ko) * 2002-12-14 2005-07-04 삼성전자주식회사 전자 스핀의존 산란을 이용한 자성매체 및 자성매체정보재생장치 및 재생방법
US7488545B2 (en) * 2006-04-12 2009-02-10 Hitachi Global Storage Technologies Netherlands B.V. Perpendicular magnetic recording medium with laminated recording layers formed of exchange-coupled ferromagnetic layers
US9978413B2 (en) 2006-06-17 2018-05-22 Dieter Suess Multilayer exchange spring recording media
TWI382408B (zh) * 2008-12-22 2013-01-11 國立清華大學 垂直記錄媒體

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0530913A1 (en) * 1991-09-03 1993-03-10 Koninklijke Philips Electronics N.V. Magneto-optical recording medium

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2077065B (en) * 1980-02-23 1985-01-09 Sharp Kk Magnetooptic memory medium
FR2595983B1 (fr) * 1986-03-24 1989-01-13 Saint Gobain Vitrage Procede de fabrication de vitrages feuilletes
JP2521713B2 (ja) * 1986-05-21 1996-08-07 沖電気工業株式会社 光磁気記録用媒体
EP0304873B1 (en) * 1987-08-26 1991-11-21 Sony Corporation Magneto-optical recording medium

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0530913A1 (en) * 1991-09-03 1993-03-10 Koninklijke Philips Electronics N.V. Magneto-optical recording medium

Also Published As

Publication number Publication date
JPH0765419A (ja) 1995-03-10
SG49286A1 (en) 1998-05-18
KR950006718A (ko) 1995-03-21
DE69421234D1 (de) 1999-11-25
DE69421234T2 (de) 2000-04-13
US5756202A (en) 1998-05-26
TW241359B (enExample) 1995-02-21

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St.27 status event code: A-5-5-R10-R18-oth-X000

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000