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US 3,945,721 AGranted
Group display system
AssigneeInternational Telephone and Telegraph Corporation
InventorDonald G. Corcoran
Life of this patent
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AssigneeInternational Telephone and Telegraph Corporation
InventorDonald G. Corcoran
Estimating the term…
A group display generator of the type wherein information appearing on the surface of a cathode ray tube is recorded on film and projected in color upon a large viewing screen. The system employs a dry type silver halide film and dry film developing process in cooperation with an image intensifier where the image appearing upon the face of the cathode ray tube is directed to the input of the image intensifier and directed from the output of the intensifier to the surface of the silver halide film in a level of surface brightness intensity equal to or greater than the illumination at the face of the cathode ray tube. The intermittent image intensifier supplies sufficient light intensification to compensate for the low image amplification inherent in the dry type silver halide film. The combination of the image intensifier and dry silver halide film allows compact and mobile group display generator application to areas heretofore inaccessible with prior art wet type film development processes and techniques. The inventive group display generators utilizing combination of optical image intensification and dry film process techniques not only provide direct substitution for wet chemical type group display generators now in existence but also provide group display generator utilization where mobile and compact systems are required.
A projecting system for group data display comprising:
A group data display generator for projecting luminous data from the faceplate of a display tube upon a viewing screen in color comprising in combination:
Dependencies are inferred from the claim text.