VIDEO SIGNAL PROCESSING CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a video signal processing circuit with simple structure for performing gain adjustment in amplifying a video signal and by which output waveform without distortion is obtained. SOLUTION: An output range of the amplifier circuit 4 is held to be constant and the video signal without the distortion of output waveform is amplified by simultaneously switching reference voltage of the amplifier circuit 4 to be supplied from a reference voltage circuit 5 when switching the gain of the amplifier circuit 4. COPYRIGHT: (C)2004,JPO&NCIPI