IT1211198B - Dispositivo e procedimento per l immagazzinamento ottico reversibile di dati e relative applicazioni - Google Patents

Dispositivo e procedimento per l immagazzinamento ottico reversibile di dati e relative applicazioni

Info

Publication number
IT1211198B
IT1211198B IT8767599A IT6759987A IT1211198B IT 1211198 B IT1211198 B IT 1211198B IT 8767599 A IT8767599 A IT 8767599A IT 6759987 A IT6759987 A IT 6759987A IT 1211198 B IT1211198 B IT 1211198B
Authority
IT
Italy
Prior art keywords
procedure
data
related applications
optical storage
reversible optical
Prior art date
Application number
IT8767599A
Other languages
English (en)
Other versions
IT8767599A0 (it
Inventor
Manfred Eich
Joachim Wendorff
Original Assignee
Roehm Gmbh
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 Roehm Gmbh filed Critical Roehm Gmbh
Publication of IT8767599A0 publication Critical patent/IT8767599A0/it
Application granted granted Critical
Publication of IT1211198B publication Critical patent/IT1211198B/it

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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/132—Thermal activation of liquid crystals exhibiting a thermo-optic effect
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/38—Polymers
    • C09K19/3833—Polymers with mesogenic groups in the side chain
    • C09K19/3842—Polyvinyl derivatives
    • C09K19/3852—Poly(meth)acrylate derivatives
    • 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
    • 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
    • G11B7/00552—Erasing involving colour 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0055—Erasing
    • G11B7/00555—Erasing involving liquid crystal 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/25—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing liquid crystals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
    • C09K2323/03—Viewing layer characterised by chemical composition
    • C09K2323/031—Polarizer or dye
    • 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
    • G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal Substances (AREA)
  • Liquid Crystal (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Holo Graphy (AREA)
IT8767599A 1986-07-11 1987-07-10 Dispositivo e procedimento per l immagazzinamento ottico reversibile di dati e relative applicazioni IT1211198B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863623395 DE3623395A1 (de) 1986-07-11 1986-07-11 Vorrichtung zur reversiblen, optischen datenspeicherung unter verwendung von polymeren fluessigkristallen

Publications (2)

Publication Number Publication Date
IT8767599A0 IT8767599A0 (it) 1987-07-10
IT1211198B true IT1211198B (it) 1989-10-12

Family

ID=6304948

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8767599A IT1211198B (it) 1986-07-11 1987-07-10 Dispositivo e procedimento per l immagazzinamento ottico reversibile di dati e relative applicazioni

Country Status (8)

Country Link
US (1) US5024784A (it)
JP (1) JPS6387626A (it)
KR (1) KR960002002B1 (it)
DE (1) DE3623395A1 (it)
FR (1) FR2603127B1 (it)
GB (1) GB2193338B (it)
IT (1) IT1211198B (it)
NL (1) NL8701620A (it)

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DE3920421A1 (de) * 1989-06-22 1991-01-03 Roehm Gmbh Verfahren zur herstellung optischer komponenten (ii)
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ES2067848T3 (es) * 1990-09-24 1995-04-01 Akzo Nobel Nv Poliesteres cristalinos liquidos y sensibles al infrarrojo, adecuados para uso en almacenamiento optico de datos, procedimientos para la preparacion de los mismos, y aparato que contiene un poliester cristalino liquido sensible al infrarrojo.
US5202053A (en) * 1991-02-22 1993-04-13 Hercules Incorporated Polymerizable nematic monomer compositions
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DE4135080A1 (de) * 1991-10-24 1993-04-29 Roehm Gmbh Verbesserte fluessigkristalline farbstoffcopolymere
US5644416A (en) * 1991-11-26 1997-07-01 Fuji Xerox Co., Ltd. Light modulation device and method of light modulation using the same
DE4139563A1 (de) * 1991-11-30 1993-06-03 Roehm Gmbh Reversibel vernetzte, orientierbare fluessigkristalline polymere
US5251197A (en) * 1992-02-13 1993-10-05 Hoechst Celanses Corp. Polarization dependent writing and erasing process for organic optical media
DE4208328C2 (de) * 1992-03-16 2002-11-14 Bayer Ag Verfahren und Vorrichtung zur löschbaren Speicherung von Information
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US5313320A (en) * 1993-03-18 1994-05-17 California Institute Of Technology Method for aligning side-group liquid-crystalline polymers
US5552915A (en) * 1994-10-19 1996-09-03 The Penn State Research Foundation Liquid crystal non-linear, photorefractive electro-optical storage device having a liquid crystal film including dopant species of C60 or C70
US5753145A (en) * 1995-06-02 1998-05-19 Hoecst Celanese Corp. Polarizer films with high thermal and hygroscopic stability
JPH10183117A (ja) * 1996-12-24 1998-07-14 Dainippon Printing Co Ltd 記録表示媒体及びその使用方法
JP4104718B2 (ja) * 1997-04-11 2008-06-18 富士ゼロックス株式会社 光記録方法
US6803153B1 (en) * 1997-04-11 2004-10-12 Fuji Xerox Co., Ltd. Optical storage medium, optical storage method; optical storage apparatus, optical reading method, optical reading apparatus, optical retrieving method and optical retrieving apparatus
US6940801B1 (en) * 1997-11-10 2005-09-06 Fuji Xerox Co., Ltd. Optical recording medium, optical recording and reproducing method and apparatus
DE19914325C1 (de) 1999-03-30 2000-07-06 Bayer Ag Wiederbeschreibbares optisches Aufzeichnungsmaterial für blaue Laser
JP2000318326A (ja) * 1999-05-10 2000-11-21 Minolta Co Ltd 熱可逆性記録媒体への記録方法及び記録装置
JP2001133630A (ja) * 1999-11-04 2001-05-18 Fuji Photo Film Co Ltd 異方性膜及び液晶表示素子
DE19956162A1 (de) * 1999-11-12 2001-05-17 Ulrich Pietsch Verfahren zur remanenten optischen Speicherung von Daten
DE10007410A1 (de) * 2000-02-18 2001-08-23 Bayer Ag Neues optisches Speicherverfahren für wiederbeschreibbare digitale Datenträger
KR100338603B1 (ko) * 2000-05-03 2002-05-27 김원현 미량원소가 다량 함유된 광물질과 미생물제재가 함유된바이오캡슐 제조방법
JP2005530306A (ja) * 2002-06-19 2005-10-06 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 蛍光性の単層又は多層の記憶用の異方性の双極子放出を伴った最適化された媒体
CN1662967A (zh) * 2002-06-19 2005-08-31 皇家飞利浦电子股份有限公司 光学数据存储
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Also Published As

Publication number Publication date
GB8716250D0 (en) 1987-08-19
NL8701620A (nl) 1988-02-01
KR880002034A (ko) 1988-04-28
GB2193338B (en) 1990-03-14
GB2193338A (en) 1988-02-03
FR2603127A1 (fr) 1988-02-26
JPS6387626A (ja) 1988-04-18
KR960002002B1 (ko) 1996-02-09
US5024784A (en) 1991-06-18
FR2603127B1 (fr) 1992-11-13
DE3623395A1 (de) 1988-01-21
IT8767599A0 (it) 1987-07-10

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Legal Events

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950731