Gamma adaptation of video processor using two measurement currents involves using adjustable measurement signal voltage for cut-off regulation, adjustable signal amplitude ratio

摘要

The method involves using an adjustable measurement signal voltage for cut-off regulation, and an adjustable amplitude ratio between the cut-off regulation signal voltage and the measurement signal voltage for drive regulation. These parameters are adapted as operating parameter values to the exponent of the color image tube An Independent claim is also included for a video signal processing circuit.