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Machine translation
1. (WO1979000333) TELEPRINTING PROCESS USING A SMECTIC LIQUID CRISTAL CELL AND TRANSCEIVER TELEPRINTER FOR APPLICATION OF SAID PROCESS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000333    International Application No.:    PCT/FR1978/000044
Publication Date: 14.06.1979 International Filing Date: 30.11.1978
IPC:
G02F 1/133 (2006.01), H04N 1/024 (2006.01)
Applicants:
Inventors:
Priority Data:
7736223 01.12.1977 FR
Title (EN) TELEPRINTING PROCESS USING A SMECTIC LIQUID CRISTAL CELL AND TRANSCEIVER TELEPRINTER FOR APPLICATION OF SAID PROCESS
(FR) PROCEDE DE TELECOPIE UTILISANT UNE CELLULE A CRISTAL LIQUIDE SMECTIQUE ET TELECOPIEUR EMETTEUR-RECEPTEUR METTANT EN OEUVRE CE PROCEDE
Abstract: front page image
(EN)A teleprinting process and a transceiver teleprinter for application of said process. It is proposed to use during the receiving phase a smectic liquid cristal cell for recording by a thermo-optic process of an intermediary image of a linear element (fragment of column or complete line) of the transmitted document, image which is then projected onto a photosensitive surface. The same optic system allows, at the transmitting phase, the reading of this linear element by a mosaic of detectors and, at the receiving phase, the projection onto the photosensitive surface of the intermediary image recorded in the cell. The invention is applicable to teleprinting through the channel of an ordinary telephone network or of high flow transmission lines, as well as to information transmission by compression.
(FR)Procede de telecopie et telecopieur emetteur-recepteur mettant en oeuvre ce procede. On propose d"utiliser lors de l"etape reception, une cellule a cristal liquide smectique pour inscrire par un procede thermo-optique, une image intermediaire d"un element lineaire (fragment de colonne ou ligne entiere) du document transmis, image qui est ensuite projetee sur une surface photosensible. Un meme systeme optique permet, a l"emission, la lecture de cet element lineaire par une mosaique de detecteurs et a la reception, la projection sur la surface photosensible de l"image intermediaire enregistree dans la cellule. L"invention est applicable a la telecopie par le canal d"un reseau telephonique ordinaire ou de lignes de transmission a grand debit, ainsi qu"a la transmission par compression de l"information.
Designated States:
Publication Language: French (FR)
Filing Language: French (FR)