FR2404272A1 - Dispositif de reproduction d'images monochromes et systeme de teletransmission d'images utilisant un tel dispositif - Google Patents
Dispositif de reproduction d'images monochromes et systeme de teletransmission d'images utilisant un tel dispositifInfo
- Publication number
- FR2404272A1 FR2404272A1 FR7728739A FR7728739A FR2404272A1 FR 2404272 A1 FR2404272 A1 FR 2404272A1 FR 7728739 A FR7728739 A FR 7728739A FR 7728739 A FR7728739 A FR 7728739A FR 2404272 A1 FR2404272 A1 FR 2404272A1
- Authority
- FR
- France
- Prior art keywords
- image
- analysis
- scans
- monochrome images
- monochrome
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 239000004973 liquid crystal related substance Substances 0.000 abstract 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction
- H04N1/036—Details of scanning heads ; Means for illuminating the original for picture information reproduction for optical reproduction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/207—Simultaneous scanning of the original picture and the reproduced picture with a common scanning device
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Facsimile Scanning Arrangements (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
L'invention se rapporte à la reproduction et à l'analyse d'images monochromes effectuées par faisceaux laser. Selon un mode de réalisation de l'invention, le dispositif comprend des moyens d'émission d'un faisceau d'analyse et d'un faisceau d'inscription, les deux faisceaux étant défléchis par des moyens de déflexion uniques. Le faisceau d'analyse balaye le document portant l'image à analyser et une cellule de détection délivre un signal électrique permettant de moduler le faisceau d'inscription. Celui-ci balaye une cellule généralement à cristaux liquides et y inscrit l'image en synchronisme avec l'analyse, en fonction de la modulation. L'invention est applicable à la photocopie, la production de fac-similés et la télétransmission d'images monochromes.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7728739A FR2404272A1 (fr) | 1977-09-23 | 1977-09-23 | Dispositif de reproduction d'images monochromes et systeme de teletransmission d'images utilisant un tel dispositif |
GB7837891A GB2005954B (en) | 1977-09-23 | 1978-09-22 | System for the analysis and the recording of monochromic images |
DE19782841382 DE2841382A1 (de) | 1977-09-23 | 1978-09-22 | Anordnung zur wiedergabe von einfarben-bildern |
JP11781178A JPS5458042A (en) | 1977-09-23 | 1978-09-25 | Monochromatic image analyzing recorder |
US06/132,643 US4288822A (en) | 1977-09-23 | 1980-03-21 | System for the analysis and the recording of monochromic images |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7728739A FR2404272A1 (fr) | 1977-09-23 | 1977-09-23 | Dispositif de reproduction d'images monochromes et systeme de teletransmission d'images utilisant un tel dispositif |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2404272A1 true FR2404272A1 (fr) | 1979-04-20 |
FR2404272B1 FR2404272B1 (fr) | 1982-02-26 |
Family
ID=9195722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7728739A Granted FR2404272A1 (fr) | 1977-09-23 | 1977-09-23 | Dispositif de reproduction d'images monochromes et systeme de teletransmission d'images utilisant un tel dispositif |
Country Status (5)
Country | Link |
---|---|
US (1) | US4288822A (fr) |
JP (1) | JPS5458042A (fr) |
DE (1) | DE2841382A1 (fr) |
FR (1) | FR2404272A1 (fr) |
GB (1) | GB2005954B (fr) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5669967A (en) * | 1979-11-13 | 1981-06-11 | Toshiba Corp | Scan type copying machine |
JPS57165820A (en) * | 1981-04-06 | 1982-10-13 | Nec Corp | Liquid-crystal light valve |
JPS5829446A (ja) * | 1981-08-18 | 1983-02-21 | キヤノン株式会社 | 眼科測定装置 |
DE3279254D1 (en) * | 1981-09-07 | 1989-01-05 | Sony Corp | Liquid crystal display device |
US4438461A (en) * | 1981-10-05 | 1984-03-20 | Xerox Corporation | Integrated input/output scanner for electronic document processing |
JPS5887535A (ja) * | 1981-11-20 | 1983-05-25 | Sony Corp | 液晶表示装置 |
US5061041A (en) * | 1984-03-02 | 1991-10-29 | Manchester R&D Partnership | Liquid crystal motion picture projector with memory |
US5016984A (en) * | 1984-03-02 | 1991-05-21 | Manchester R & D Partnership | Liquid crystal motion picture projector with memory |
US4693557A (en) * | 1984-03-02 | 1987-09-15 | Manchester R & D Partnership | Liquid crystal motion picture projector |
US4652722A (en) * | 1984-04-05 | 1987-03-24 | Videojet Systems International, Inc. | Laser marking apparatus |
US5130828A (en) * | 1984-05-22 | 1992-07-14 | Manchester R&D Partnership | Liquid crystal temperature sensor and materials |
US4884877A (en) * | 1984-05-22 | 1989-12-05 | Manchester R & D Partnership | Liquid crystal temperature sensor and materials utilizing microencapsulated liquid crystal |
JPS60262130A (ja) * | 1984-06-09 | 1985-12-25 | Sony Corp | 液晶表示装置 |
US5216530A (en) * | 1985-06-03 | 1993-06-01 | Taliq Corporation | Encapsulated liquid crystal having a smectic phase |
US4672014A (en) * | 1985-10-08 | 1987-06-09 | The Mead Corporation | Exposure of imaging sheets utilizing a light valve as a wavelength transformer |
US5319481A (en) * | 1986-12-23 | 1994-06-07 | Raychem Corporation | Encapsulated liquid crystal optical read/write storage medium and system |
JPH083697B2 (ja) * | 1987-02-10 | 1996-01-17 | 富士通株式会社 | 投写型液晶表示装置 |
US5026145A (en) * | 1987-09-24 | 1991-06-25 | Asahi Kogaku Kogyo Kabushiki Kaisha | Exposure apparatus |
US4933754A (en) * | 1987-11-03 | 1990-06-12 | Ciba-Geigy Corporation | Method and apparatus for producing modified photographic prints |
JPH0245169A (ja) * | 1988-08-06 | 1990-02-15 | Seiko Instr Inc | レーザ走査装置 |
US5777659A (en) * | 1996-03-29 | 1998-07-07 | Xerox Corporaiton | Dual-beam, reflex-controlled laser circuit for an electrophotographic printer |
US7286111B2 (en) * | 2003-11-13 | 2007-10-23 | Eastman Kodak Company | Apparatus for electro-optically writing a display |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3465352A (en) * | 1966-05-11 | 1969-09-02 | Ncr Co | Information processing systems using lasers |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3627408A (en) * | 1965-06-29 | 1971-12-14 | Westinghouse Electric Corp | Electric field device |
US3796499A (en) * | 1973-03-22 | 1974-03-12 | United Aircraft Corp | Method and apparatus for determining the concentration of paramagnetic material in a gas mixture |
FR2275087A1 (fr) * | 1974-06-14 | 1976-01-09 | Thomson Csf | Dispositif de reproduction d'images en noir et blanc utilisant un materiau presentant une phase smectique et systeme de teletransmission et telereprographie mettant en oeuvre ce dispositif |
US4002829A (en) * | 1974-08-29 | 1977-01-11 | W. R. Grace & Co. | Autosynchronous optical scanning and recording laser system with fiber optic light detection |
US4015081A (en) * | 1975-02-03 | 1977-03-29 | Xerox Corporation | Multifunction scanning system |
-
1977
- 1977-09-23 FR FR7728739A patent/FR2404272A1/fr active Granted
-
1978
- 1978-09-22 GB GB7837891A patent/GB2005954B/en not_active Expired
- 1978-09-22 DE DE19782841382 patent/DE2841382A1/de not_active Withdrawn
- 1978-09-25 JP JP11781178A patent/JPS5458042A/ja active Pending
-
1980
- 1980-03-21 US US06/132,643 patent/US4288822A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3465352A (en) * | 1966-05-11 | 1969-09-02 | Ncr Co | Information processing systems using lasers |
Also Published As
Publication number | Publication date |
---|---|
FR2404272B1 (fr) | 1982-02-26 |
US4288822A (en) | 1981-09-08 |
JPS5458042A (en) | 1979-05-10 |
GB2005954B (en) | 1982-05-12 |
GB2005954A (en) | 1979-04-25 |
DE2841382A1 (de) | 1979-04-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |