DE69803155D1 - Optische Informationsspeichereinheit - Google Patents

Optische Informationsspeichereinheit

Info

Publication number
DE69803155D1
DE69803155D1 DE69803155T DE69803155T DE69803155D1 DE 69803155 D1 DE69803155 D1 DE 69803155D1 DE 69803155 T DE69803155 T DE 69803155T DE 69803155 T DE69803155 T DE 69803155T DE 69803155 D1 DE69803155 D1 DE 69803155D1
Authority
DE
Germany
Prior art keywords
storage unit
information storage
optical information
optical
unit
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
DE69803155T
Other languages
English (en)
Other versions
DE69803155T2 (de
Inventor
Yasuaki Morimoto
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
Application granted granted Critical
Publication of DE69803155D1 publication Critical patent/DE69803155D1/de
Publication of DE69803155T2 publication Critical patent/DE69803155T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
    • 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
    • G11B7/00718—Groove and land recording, i.e. user data recorded both in the grooves and on the lands
    • 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
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Magnetic Heads (AREA)
DE69803155T 1997-10-06 1998-03-10 Optische Informationsspeichereinheit Expired - Fee Related DE69803155T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9272867A JPH11110810A (ja) 1997-10-06 1997-10-06 光学的情報記憶装置

Publications (2)

Publication Number Publication Date
DE69803155D1 true DE69803155D1 (de) 2002-02-21
DE69803155T2 DE69803155T2 (de) 2002-06-13

Family

ID=17519877

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69803155T Expired - Fee Related DE69803155T2 (de) 1997-10-06 1998-03-10 Optische Informationsspeichereinheit

Country Status (4)

Country Link
US (1) US6118748A (de)
EP (1) EP0908872B1 (de)
JP (1) JPH11110810A (de)
DE (1) DE69803155T2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11283254A (ja) * 1998-03-31 1999-10-15 Sony Corp 光ディスク駆動装置
JP3558918B2 (ja) * 1999-03-25 2004-08-25 富士通株式会社 光情報記憶装置
JP3692832B2 (ja) * 1999-05-21 2005-09-07 富士ゼロックス株式会社 記録再生ヘッドおよび記録再生ディスク装置
JP3535996B2 (ja) * 1999-09-20 2004-06-07 富士通株式会社 光記憶装置および位相補償量調整方法
KR100370606B1 (ko) * 1999-10-05 2003-03-19 엘지전자 주식회사 고밀도 디스크 기록매체와 그에 따른 데이터 재생장치 및 방법
JP2002230822A (ja) * 2001-01-30 2002-08-16 Mitsumi Electric Co Ltd 光学ピックアップ装置
JP2002251739A (ja) * 2001-02-21 2002-09-06 Fujitsu Ltd 位相補償方法及び光記憶装置

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236105A (en) * 1979-01-12 1980-11-25 Mca Discovision, Inc. Digital center tracking system
JPS5875046A (ja) * 1981-10-29 1983-05-06 Nec Corp Ｔｅ，ｔｍ波の等価屈折率差測定方法
JPS5888838A (ja) * 1981-11-19 1983-05-27 Sony Corp 光学式信号記録方式
JPS59185044A (ja) * 1983-04-01 1984-10-20 Nippon Telegr & Teleph Corp <Ntt> 光メモリ装置
JPS59215084A (ja) * 1983-05-20 1984-12-04 Hitachi Ltd 位置決め装置
JPS6113458A (ja) * 1984-06-29 1986-01-21 Hitachi Ltd 光学的情報記録媒体およびカツテイング装置
JPS60246030A (ja) * 1984-05-21 1985-12-05 Matsushita Electric Ind Co Ltd トラツキング制御装置
US4694447A (en) * 1984-07-12 1987-09-15 International Business Machines Corp. Optical signal recorders employing two lasers and methods therefor
JPH0614410B2 (ja) * 1985-04-10 1994-02-23 ソニー株式会社 光学式デイスクプレ−ヤ
JPS62154329A (ja) * 1985-12-27 1987-07-09 Matsushita Electric Ind Co Ltd フオ−カス制御装置
JPH0661132B2 (ja) * 1986-03-15 1994-08-10 日本電信電話株式会社 光学的情報記録方法
JPH01133225A (ja) * 1987-11-18 1989-05-25 Mitsubishi Electric Corp 光デイスク駆動装置
JPH01211258A (ja) * 1988-02-18 1989-08-24 Sony Corp 光磁気ピックアップ装置
JPH0386953A (ja) * 1989-07-27 1991-04-11 Mitsubishi Electric Corp 光磁気記録再生装置
JPH02118924A (ja) * 1989-09-25 1990-05-07 Hitachi Ltd 情報処理装置
JPH03157818A (ja) * 1989-11-15 1991-07-05 Matsushita Electric Ind Co Ltd フォーカス制御装置
JPH04113526A (ja) * 1990-08-31 1992-04-15 Sharp Corp 光ピックアップ
JPH04337528A (ja) * 1991-05-14 1992-11-25 Sony Corp 調整治具
US5530641A (en) * 1991-05-17 1996-06-25 Olympus Optical Co., Ltd. Optical recording medium having grooves and lands and/or plural pit lines, and reproducing apparatus therefor
JPH05182220A (ja) * 1991-12-28 1993-07-23 Sony Corp 光ディスク記録装置
JPH0643394A (ja) * 1992-07-24 1994-02-18 Sumitomo Electric Ind Ltd 光アイソレータ
JPH06150346A (ja) * 1992-10-30 1994-05-31 Sony Corp ディスク駆動装置のノイズ低減方法
JP3238497B2 (ja) * 1992-11-12 2001-12-17 松下電器産業株式会社 光ピックアップヘッド装置
JPH06162526A (ja) * 1992-11-24 1994-06-10 Nikon Corp アクチュエータサーボ装置
JP3770921B2 (ja) * 1993-03-31 2006-04-26 三菱電機株式会社 光ディスク装置
JPH0785523A (ja) * 1993-09-20 1995-03-31 Hitachi Ltd 光磁気ディスク装置
JPH07169114A (ja) * 1993-12-15 1995-07-04 Ricoh Co Ltd 光ディスク原盤露光装置
US5625725A (en) * 1993-12-28 1997-04-29 Sony Corporation Magneto-optical pickup device having phase compensating circuitry
JPH07235095A (ja) * 1993-12-28 1995-09-05 Sony Corp 光磁気再生ピックアップ
JPH07234382A (ja) * 1994-02-24 1995-09-05 Matsushita Electric Ind Co Ltd 超解像走査光学装置
JP3064860B2 (ja) * 1994-04-01 2000-07-12 松下電器産業株式会社 フォーカス制御装置および記録媒体
JP3583808B2 (ja) * 1994-06-20 2004-11-04 ソニー株式会社 光磁気ディスク記録媒体における溝深さの設定方法
US5600620A (en) * 1994-11-08 1997-02-04 Nec Corporation Optical head apparatus having means to eliminate noise caused by side-lobes
DE69620495T2 (de) * 1995-02-02 2002-10-10 Pioneer Electronic Corp Optisches Abtastgerät und Identifizierungsgerät zum Identifizieren des Typs eines optischen Aufzeichnungsmediums
JPH08329470A (ja) * 1995-05-31 1996-12-13 Nikon Corp 再生方法、再生装置及び光ディスク
JP3857339B2 (ja) * 1995-10-27 2006-12-13 富士通株式会社 光情報検出装置
JP3645020B2 (ja) * 1995-12-12 2005-05-11 富士通株式会社 光情報検出装置

Also Published As

Publication number Publication date
EP0908872A3 (de) 1999-08-11
US6118748A (en) 2000-09-12
EP0908872A2 (de) 1999-04-14
EP0908872B1 (de) 2002-01-16
DE69803155T2 (de) 2002-06-13
JPH11110810A (ja) 1999-04-23

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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