Video display system

Abstract

A video display system is disclosed, which includes a display device including a plurality of display cells arranged in an X-Y matrix form, a video signal source for supplying a digital video signal, a pulse width modulator connected to the video signal source for deriving a PWM signal corresponding to the brightness level of the digital video signal, the pulse width modulator including a counter supplied with the digital video signal as a datum signal and a clock signal generator for supplying a clock signal to the counter, and a signal supplying circuit connected to the pulse width modulator for supplying the PWM signal to the display device and reproducing a picture thereon. In this case, the video display system of this invention further includes a control circuit connected to the clock signal generator for changing the frequency of the clock signal supplied to the counter and controlling the brightness of the picture reproduced on the display device.

Dependencies are inferred from the claim text.