Video communication system and phase or frequency modulator...

Details Video communication system and phase or frequency modulator... Video communication system and phase or frequency modulator...

H - Electricity

04

N

350/32, 379/4

H04N 7/04 (2006.01) H04N 7/045 (2006.01) H04N 7/12 (2006.01) H04N 7/24 (2006.01)

Patent

CA 1314625

VIDEO COMMUNICATION SYSTEM AND PHASE OR FREQUENCY MODULATOR INCLUDED THEREIN ABSTRACT OF THE DISCLOSURE A video communication system for transmitting still pictures of a scene during periodic intervals comprises a T.V. camera producing video analog signals of the scene to be transmitted, an analog-to-digital converter converting the video analog signals to pixel digital signals representing the gray level of each pixel in the scene, a memory for storing the pixel gray levels, and a phase or frequency modulator for modulating a carrier wave by the pixel gray levels from the memory.

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