Video communication system and phase or frequency modulator included therein
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United States of America Patent
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-
Jul 31, 1990
Grant Date -
N/A
app pub date -
May 6, 1988
filing date -
May 15, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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 modulator for modulating a carrier wave by the pixel gray levels from the memory.
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