DE3876544D1 - Optisches speichersystem. - Google Patents

Optisches speichersystem.

Info

Publication number
DE3876544D1
DE3876544D1 DE8888308137T DE3876544T DE3876544D1 DE 3876544 D1 DE3876544 D1 DE 3876544D1 DE 8888308137 T DE8888308137 T DE 8888308137T DE 3876544 T DE3876544 T DE 3876544T DE 3876544 D1 DE3876544 D1 DE 3876544D1
Authority
DE
Germany
Prior art keywords
storage system
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
DE8888308137T
Other languages
English (en)
Other versions
DE3876544T2 (de
DE3876544T3 (de
Inventor
Akira Takahashi
Tetsuya Inui
Kenji Ohta
Toshihisa Deguchi
Kazuo Van
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=16739722&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3876544(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of DE3876544D1 publication Critical patent/DE3876544D1/de
Publication of DE3876544T2 publication Critical patent/DE3876544T2/de
Application granted granted Critical
Publication of DE3876544T3 publication Critical patent/DE3876544T3/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
    • 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
    • G11B7/08—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
    • G11B7/007—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
DE3876544T 1987-09-02 1988-09-02 Optisches Speichersystem. Expired - Lifetime DE3876544T3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21970887 1987-09-02

Publications (3)

Publication Number Publication Date
DE3876544D1 true DE3876544D1 (de) 1993-01-21
DE3876544T2 DE3876544T2 (de) 1993-04-15
DE3876544T3 DE3876544T3 (de) 1999-04-29

Family

ID=16739722

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3876544T Expired - Lifetime DE3876544T3 (de) 1987-09-02 1988-09-02 Optisches Speichersystem.

Country Status (3)

Country Link
US (1) US5666345A (de)
EP (1) EP0306324B2 (de)
DE (1) DE3876544T3 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2108810T3 (es) * 1992-07-03 1998-01-01 Philips Electronics Nv Soporte de registro con zonas.
JP2934684B2 (ja) * 1993-09-10 1999-08-16 株式会社日本コンラックス 光学式情報記録再生システム及び該システムにおけるトラッキング制御装置
JPH09251668A (ja) * 1996-03-15 1997-09-22 Sony Corp 光学式記録媒体
US5932397A (en) * 1996-05-28 1999-08-03 Rvm Scientific, Inc. Multicolor lithography for control of three dimensional refractive index gradient processing
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
JPH11250504A (ja) * 1998-02-27 1999-09-17 Sony Corp 光記録媒体及びその製造方法
JP2001006220A (ja) * 1999-06-22 2001-01-12 Sharp Corp 光記録媒体
JP3490356B2 (ja) * 1999-09-29 2004-01-26 シャープ株式会社 光記録媒体、並びに、光記録媒体用原盤およびその製造方法
JP3962522B2 (ja) 2000-02-14 2007-08-22 パイオニア株式会社 情報記録媒体
JP4157254B2 (ja) * 2000-06-14 2008-10-01 シャープ株式会社 情報記録再生装置およびそのトラッキングサーボ方法
US20040090874A1 (en) * 2002-11-08 2004-05-13 Kunjithapatham Balasubramanian Apparatus and method for effective reduction of a laser beam spot size
KR100717854B1 (ko) * 2005-06-24 2007-05-14 엘지전자 주식회사 근접장 방식 및 원격장 방식 호환 광 디스크 드라이브에서광 디스크 매질 확인 방법 및 이를 이용한 광 디스크 장치
US7596067B2 (en) * 2005-08-29 2009-09-29 Hewlett-Packard Development Company, L.P. Method of laser spot location and adjustment thereof

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841446A (ja) * 1981-09-04 1983-03-10 Hitachi Ltd 光学的情報追跡方式
EP0100995A3 (en) * 1982-08-10 1985-10-16 Kabushiki Kaisha Toshiba Optical disk
JPS60261043A (ja) * 1984-06-07 1985-12-24 Victor Co Of Japan Ltd 情報記録媒体円盤
JPS6185653A (ja) * 1984-10-02 1986-05-01 Sharp Corp 光磁気メモリ素子
JPS61126635A (ja) * 1984-11-21 1986-06-14 Nec Home Electronics Ltd 光メモリデイスク
JPS61129741A (ja) * 1984-11-28 1986-06-17 Nec Home Electronics Ltd 光メモリデイスク
JPS61151843A (ja) * 1984-12-25 1986-07-10 Nec Home Electronics Ltd 光メモリデイスク
NL8500153A (nl) * 1985-01-22 1986-08-18 Philips Nv Registratiedragerlichaam voorzien van een reliefstruktuur van optisch detekteerbare servospoorgedeelten en sektoradressen en inrichting voor het aanbrengen van deze struktuur.
JPS61178116A (ja) * 1985-01-31 1986-08-09 Oyo Jiki Kenkyusho:Kk 金属箔の製造方法および製造装置
JPS61214246A (ja) * 1985-03-20 1986-09-24 Matsushita Electric Ind Co Ltd 平板状情報記録担体
US4707816A (en) * 1985-03-29 1987-11-17 Hitachi, Ltd. Method and apparatus for composite wobbled and push-pull tracking servo system
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
JP2857284B2 (ja) * 1992-08-24 1999-02-17 レーム プロパティズ ビーブイ 電力系統制御装置

Also Published As

Publication number Publication date
DE3876544T2 (de) 1993-04-15
EP0306324A1 (de) 1989-03-08
DE3876544T3 (de) 1999-04-29
US5666345A (en) 1997-09-09
EP0306324B2 (de) 1998-11-25
EP0306324B1 (de) 1992-12-09

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings