VIDEO SIGNAL PROCESSING UNIT

摘要

PROBLEM TO BE SOLVED: To provide a video signal processing unit that is provided with an integrated circuit that respectively processes a main screen video signal and a sub screen video signal, synthesizes the main screen video signal and the sub screen video signal so as to be displayed on one screen and reduces the circuit scale. SOLUTION: The video signal processing unit is provided with a sub screen signal processing circuit 146 that applies display area reduction processing to the sub screen video signal, and a main screen signal processing circuit 147 comprising; a changeover circuit 103 that receives a main screen video signal and a signal outputted from the sub screen signal processing circuit 146, selects the main screen video signal for a display area of a main screen, and selects and outputs a signal outputted from the sub screen signal processing circuit 146 for a display area of sub screen; an analog/digital converter circuit 104 that converts an output of the changeover circuit 103 into a digital signal; and an RGB matrix circuit 117 that converts the digital signal into an RGB signal.