DE3783637D1 - Optisches speichermedium und dessen informationsaufzeichnungs- und -loeschmethode und geraet dazu. - Google Patents

Optisches speichermedium und dessen informationsaufzeichnungs- und -loeschmethode und geraet dazu.

Info

Publication number
DE3783637D1
DE3783637D1 DE8787105213T DE3783637T DE3783637D1 DE 3783637 D1 DE3783637 D1 DE 3783637D1 DE 8787105213 T DE8787105213 T DE 8787105213T DE 3783637 T DE3783637 T DE 3783637T DE 3783637 D1 DE3783637 D1 DE 3783637D1
Authority
DE
Germany
Prior art keywords
storage medium
information recording
optical storage
device therefor
erasing method
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
DE8787105213T
Other languages
English (en)
Inventor
Yoshio Sato
Atsumi Hitachi Motoma Watanabe
Satoshi Shimada
Hiroshi Sasaki
Nobuyoshi Tsuboi
Hideki Nihei
Norifumi Miyamoto
Hiroaki Koyanagi
Hiroyuki Minemura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Priority claimed from JP61079949A external-priority patent/JPH0772941B2/ja
Priority claimed from JP61079954A external-priority patent/JPS62239340A/ja
Priority claimed from JP13595986A external-priority patent/JPS62293518A/ja
Priority claimed from JP61205978A external-priority patent/JPS6363145A/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3783637D1 publication Critical patent/DE3783637D1/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
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0055—Erasing
    • G11B7/00557—Erasing involving phase-change media
    • 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
    • G11B7/00745—Sectoring or header formats within a track
DE8787105213T 1986-04-09 1987-04-08 Optisches speichermedium und dessen informationsaufzeichnungs- und -loeschmethode und geraet dazu. Expired - Lifetime DE3783637D1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP61079949A JPH0772941B2 (ja) 1986-04-09 1986-04-09 光メモリ装置
JP61079954A JPS62239340A (ja) 1986-04-09 1986-04-09 光メモリ媒体
JP13595986A JPS62293518A (ja) 1986-06-13 1986-06-13 情報記録装置
JP61205978A JPS6363145A (ja) 1986-09-03 1986-09-03 光学記録媒体

Publications (1)

Publication Number Publication Date
DE3783637D1 true DE3783637D1 (de) 1993-03-04

Family

ID=27466366

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787105213T Expired - Lifetime DE3783637D1 (de) 1986-04-09 1987-04-08 Optisches speichermedium und dessen informationsaufzeichnungs- und -loeschmethode und geraet dazu.

Country Status (3)

Country Link
US (1) US5177717A (de)
EP (1) EP0241017B1 (de)
DE (1) DE3783637D1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265079A (en) 1991-02-15 1993-11-23 Applied Magnetics Corporation Seek actuator for optical recording
US6141300A (en) 1989-06-20 2000-10-31 Discovision Associates Optical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including same
US5677899A (en) 1991-02-15 1997-10-14 Discovision Associates Method for moving carriage assembly from initial position to target position relative to storage medium
US5729511A (en) 1991-02-15 1998-03-17 Discovision Associates Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
US6069857A (en) 1991-02-15 2000-05-30 Discovision Associates Optical disc system having improved circuitry for performing blank sector check on readable disc
US6236625B1 (en) * 1991-02-15 2001-05-22 Discovision Associates Optical disc system having current monitoring circuit with controller for laser driver and method for operating same
US5425016A (en) * 1994-02-28 1995-06-13 Sutker; Hal Digital laser encoder/recorder/player, utilizing ellipsoidal memory medium
US5748578A (en) 1995-01-25 1998-05-05 Discovision Associates Colpitts type oscillator having reduced ringing and improved optical disc system utilizing same
US6091684A (en) 1995-01-25 2000-07-18 Discovision Associates Optical disc system and method for changing the rotational rate of an information storage medium
US6434087B1 (en) 1995-01-25 2002-08-13 Discovision Associates Optical disc system and method for controlling bias coil and light source to process information on a storage medium
JP2002092888A (ja) * 2000-09-08 2002-03-29 Sony Corp 光ディスク及び光磁気ディスク並びにこれらのディスク装置及びデータ記録方法
US20030128646A1 (en) * 2002-01-09 2003-07-10 Peter Nangle Asymmetrical programming mechanism for non-volatile memory
US7005665B2 (en) * 2004-03-18 2006-02-28 International Business Machines Corporation Phase change memory cell on silicon-on insulator substrate
US7050256B1 (en) * 2004-06-29 2006-05-23 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Fast erase method and apparatus for digital media

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801966A (en) * 1971-08-18 1974-04-02 Hitachi Ltd Optical memory device
JPS5766996A (en) * 1980-10-15 1982-04-23 Hitachi Ltd Information recording member and method of preparing thereof
JPS57205193A (en) * 1981-06-12 1982-12-16 Fuji Photo Film Co Ltd Optical information recording medium
JPS6015180A (ja) * 1983-07-06 1985-01-25 Fuji Xerox Co Ltd プリンタ−
JPS60262931A (ja) * 1984-06-08 1985-12-26 Hitachi Ltd 分光反射率可変合金
JPS60166487A (ja) * 1984-02-10 1985-08-29 Tdk Corp 光記録媒体
JPS60180887A (ja) * 1984-02-29 1985-09-14 Mitsubishi Petrochem Co Ltd 光記録方法
JPH066393B2 (ja) * 1984-03-07 1994-01-26 株式会社日立製作所 情報の記録・消去方法
US4637008A (en) * 1984-04-12 1987-01-13 Ltv Aerospace And Defense Optical erasable disk memory system utilizing duration modulated laser switching
JPS61133065A (ja) * 1984-12-03 1986-06-20 Hitachi Ltd 光情報記録装置
JPS61150141A (ja) * 1984-12-24 1986-07-08 Matsushita Electric Ind Co Ltd 光学式情報記録担体
US4670345A (en) * 1985-02-22 1987-06-02 Asahi Kasei Kogyo Kabushiki Kaisha Information recording medium

Also Published As

Publication number Publication date
US5177717A (en) 1993-01-05
EP0241017B1 (de) 1993-01-20
EP0241017A3 (en) 1990-01-17
EP0241017A2 (de) 1987-10-14

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Legal Events

Date Code Title Description
8332 No legal effect for de