Video signal contained luminance signal processing - averages non-delayed and delayed luminance signals only when they differ by preset delay value

摘要

A non-delayed luminance signal (A) and a delayed luminance signal (T) are halved to form a processed output signal (D). The average forming halving is carried out only, when the two luminance signals differ by less than a preset value. The processing circuit contains a delay member (11) for the luminance signal delay by one line period (1H). An adding member (12) adds the delayed luminance signal to an undelayed one and transmits an addition signal (C). A first pass threshold circuit between the delay member outlet and the adding member outlet and a second such pass threshold circuit between the underlayed luminance signal line and the adding member output complete the circuit. USE/ADVANTAGE - For TV transmitters, video cameras, or video recorders, with increased level of luminance signal and thus brighter image.