DE3588236D1 - Magnetooptisches Speicherelement - Google Patents

Magnetooptisches Speicherelement

Info

Publication number
DE3588236D1
DE3588236D1 DE3588236T DE3588236T DE3588236D1 DE 3588236 D1 DE3588236 D1 DE 3588236D1 DE 3588236 T DE3588236 T DE 3588236T DE 3588236 T DE3588236 T DE 3588236T DE 3588236 D1 DE3588236 D1 DE 3588236D1
Authority
DE
Germany
Prior art keywords
magneto
storage element
optical storage
optical
storage
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
DE3588236T
Other languages
English (en)
Other versions
DE3588236T2 (de
Inventor
Kenji Ohta
Tetuya Inui
Yoshikazu Fujii
Toshihisa Deguchi
Shigemi Maeda
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 DE3588236D1 publication Critical patent/DE3588236D1/de
Application granted granted Critical
Publication of DE3588236T2 publication Critical patent/DE3588236T2/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
    • G11B11/10595—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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
    • G11B11/10563—Access of indexed parts
    • 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
    • G11B11/10563—Access of indexed parts
    • G11B11/10565—Marks for track change, e.g. prepits, gray codes
    • 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • G11B11/10578—Servo format, e.g. prepits, guide tracks, pilot signals
    • 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
    • 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
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0938—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following servo format, e.g. guide tracks, pilot signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
DE3588236T 1984-10-02 1985-10-01 Magnetooptisches Speicherelement Expired - Lifetime DE3588236T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59207838A JPS6185653A (ja) 1984-10-02 1984-10-02 光磁気メモリ素子

Publications (2)

Publication Number Publication Date
DE3588236D1 true DE3588236D1 (de) 2002-02-07
DE3588236T2 DE3588236T2 (de) 2002-08-14

Family

ID=16546359

Family Applications (3)

Application Number Title Priority Date Filing Date
DE3588191T Expired - Lifetime DE3588191T2 (de) 1984-10-02 1985-10-01 Magneto-optisches Wiedergabegerät
DE3588236T Expired - Lifetime DE3588236T2 (de) 1984-10-02 1985-10-01 Magnetooptisches Speicherelement
DE85307022T Expired - Lifetime DE3587708T2 (de) 1984-10-02 1985-10-01 Optisches Speicherelement.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE3588191T Expired - Lifetime DE3588191T2 (de) 1984-10-02 1985-10-01 Magneto-optisches Wiedergabegerät

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE85307022T Expired - Lifetime DE3587708T2 (de) 1984-10-02 1985-10-01 Optisches Speicherelement.

Country Status (5)

Country Link
US (3) US5828649A (de)
EP (3) EP0543800B1 (de)
JP (1) JPS6185653A (de)
CA (1) CA1248229A (de)
DE (3) DE3588191T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111566371A (zh) * 2018-03-06 2020-08-21 舍弗勒技术股份两合公司 在用于摩擦材料粘附的表面上激光蚀刻图案

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61236026A (ja) * 1985-04-10 1986-10-21 Matsushita Electric Ind Co Ltd 情報記録原盤記録方法
NL193159C (nl) * 1985-06-19 1998-12-04 Hitachi Ltd Voorgevormde registratiedrager voor het daarin met behulp van een lichtvlek schrijven van informatie.
JPH0746429B2 (ja) * 1985-06-21 1995-05-17 オリンパス光学工業株式会社 光学式記録再生装置
JPS62117168A (ja) * 1985-11-15 1987-05-28 Teac Co 情報記録円盤
JPS62164626U (de) * 1986-04-07 1987-10-19
US5144552A (en) * 1986-07-25 1992-09-01 Ricoh Company, Ltd. Optical information storage medium having grooves and pits with specific depths, respectively
EP0306324B2 (de) * 1987-09-02 1998-11-25 Sharp Kabushiki Kaisha Optisches Speichersystem
EP0527539B1 (de) * 1987-11-18 1998-03-11 Sharp Kabushiki Kaisha Optisches Speichermedium
US5166913A (en) * 1988-01-27 1992-11-24 Nec Corporation Optical disk device for record and reproduction of additional information besides reproducing of basic information
US5040165A (en) * 1988-03-03 1991-08-13 Hitachi Maxell, Ltd. Optical information recording medium and method of fabricating the same
JPH01286135A (ja) * 1988-05-12 1989-11-17 Nec Corp 光ディスク
JPH02195540A (ja) * 1989-01-23 1990-08-02 Fujitsu Ltd 光ディスク
US5414652A (en) * 1993-08-27 1995-05-09 Sharp Kabushiki Kaisha Magneto-optical memory element
US7239602B2 (en) * 1998-08-27 2007-07-03 Ricoh Company, Ltd. Optical information recording medium with a partition wall between an information tracks groove and a preformat pit encoding information therefor
JP2000231745A (ja) * 1999-02-09 2000-08-22 Sony Corp 光記録媒体、光記録媒体製造用原盤及びその製造方法
US9519319B2 (en) 2014-03-14 2016-12-13 Sandisk Technologies Llc Self-supporting thermal tube structure for electronic assemblies

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US4467383A (en) * 1980-02-23 1984-08-21 Sharp Kabushiki Kaisha Magnetooptic memory medium
JPS56145535A (en) * 1980-04-15 1981-11-12 Matsushita Electric Ind Co Ltd Disc for optical recording
US4414650A (en) * 1980-06-23 1983-11-08 Sharp Kabushiki Kaisha Magneto-optic memory element
NL8006306A (nl) * 1980-11-19 1982-06-16 Philips Nv Schijfvormige, optische uitleesbare registratiedrager als opslagmedium voor datainformatie, inrichting voor het vervaardigen van zo'n registratiedrager en inrichting voor het optekenen van datainformatie in zo'n registratiedrager.
CA1185013A (en) * 1981-01-14 1985-04-02 Kenji Ohta Magneto-optic memory medium
JPS57120253A (en) * 1981-01-14 1982-07-27 Sharp Corp Magnetooptical storage elemen
JPS58102347A (ja) * 1981-12-11 1983-06-17 Mitsubishi Electric Corp 光デイスク記録担体
JPS58203646A (ja) * 1982-05-21 1983-11-28 Canon Inc 光磁気再生装置
JPS593988A (ja) * 1982-06-30 1984-01-10 富士通株式会社 プリント基板製造方法
JPS5911551A (ja) * 1982-07-12 1984-01-21 Toshiba Corp 光学式情報記憶媒体
JPS5930251A (ja) * 1982-08-10 1984-02-17 Toshiba Corp 光学式情報記憶媒体
EP0100995A3 (en) * 1982-08-10 1985-10-16 Kabushiki Kaisha Toshiba Optical disk
NL8203725A (nl) * 1982-09-27 1984-04-16 Philips Nv Thermo-magneto-optische geheugeninrichting en registratiemedium daarvoor.
JPS5977648A (ja) * 1982-10-26 1984-05-04 Sharp Corp 光磁気記憶素子
JPS5982646A (ja) * 1982-10-29 1984-05-12 Sharp Corp 光磁気記憶装置
JPS59177744A (ja) * 1983-03-28 1984-10-08 Matsushita Electric Ind Co Ltd 記録再生用デイスク担体
US4544443A (en) * 1983-05-13 1985-10-01 Shap Kabushiki Kaisha Method for manufacturing an optical memory element
JPS6012550A (ja) * 1983-07-04 1985-01-22 Nippon Kogaku Kk <Nikon> 露光転写装置用マスク供給装置
US4556291A (en) * 1983-08-08 1985-12-03 Xerox Corporation Magneto-optic storage media
JPH0636253B2 (ja) * 1983-08-18 1994-05-11 シャープ株式会社 光メモリ円板
CA1224270A (en) * 1983-09-16 1987-07-14 Junji Hirokane Magneto-optic memory element
JPS60109034A (ja) * 1983-11-18 1985-06-14 Canon Inc 光デイスクの記録再生方法
US4985881A (en) * 1983-12-23 1991-01-15 Hitachi, Ltd. Record carrier for a magneto-optical disc memory having guide grooves of a plurality of tracks disposed with a predetermined relation to light spot diameter
DE3583754D1 (de) * 1984-03-16 1991-09-19 Sharp Kk Verfahren zur herstellung eines optischen speicherelements.
KR920007294B1 (ko) * 1984-06-29 1992-08-29 가부시끼가이샤 히다찌세이사꾸쇼 광자기 정보 기록장치의 광헤드
JPS6151631A (ja) * 1984-08-20 1986-03-14 Sharp Corp 光磁気メモリ素子
US5341362A (en) * 1984-08-20 1994-08-23 Sharp Kabushiki Kaisha Optical memory device having guide tracks shaped for increasing the quality of information signals
JP2671139B2 (ja) * 1987-12-10 1997-10-29 富士写真フイルム株式会社 情報記録媒体，光情報記録方法および光情報記録再生方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111566371A (zh) * 2018-03-06 2020-08-21 舍弗勒技术股份两合公司 在用于摩擦材料粘附的表面上激光蚀刻图案

Also Published As

Publication number Publication date
US5809005A (en) 1998-09-15
EP0178116B1 (de) 1993-12-29
EP0543800A2 (de) 1993-05-26
EP0543800A3 (de) 1995-07-26
JPS6185653A (ja) 1986-05-01
US5828649A (en) 1998-10-27
EP0811968B1 (de) 2002-01-02
EP0811968A2 (de) 1997-12-10
DE3588191T2 (de) 1999-02-18
EP0178116A3 (en) 1987-08-19
CA1248229A (en) 1989-01-03
DE3587708D1 (de) 1994-02-10
EP0178116A2 (de) 1986-04-16
DE3587708T2 (de) 1994-04-28
JPH0518186B2 (de) 1993-03-11
EP0811968A3 (de) 1999-12-29
EP0543800B1 (de) 1998-07-22
US6055223A (en) 2000-04-25
DE3588236T2 (de) 2002-08-14
DE3588191D1 (de) 1998-08-27

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