JPS5586263A - Analog picture signal transmission system - Google Patents

Abstract

PURPOSE: To attain excellent-performance analog transmission by a miniature and low-priced unit by using an analog shift register, stored temporarily with picture information, as delay one.

CONSTITUTION: Output (p) of image sensor K is inputted to analog shift register B by way of switch S₁ and for the purpose of delay as long as 512 high-speed clocks (m), binary counter G makes a round and displays "1" at the point in time when the output is inputted to image sensor K at the time of a clock preceding by 512 clocks and the a 1st picture element is outputted from register B being shifted. Low- speed clock (n) agreeing a circuit-corresponding speed corresponds to output picture element (q) of an analog signal and is simultaneously applied to binary counter F to display output picture element on the sensor, thereby counting it synchronizing with output picture elements. The point in time when the output display of counter G counting up by high-speed clock (m) argees with the display of F is detected by coincidence detection circuit H to supply a state pulse to FFI. Through the switching of switches S₁∼S₄, picture elements are outputted from output (t) of FFI synchronizing with clock (n).

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