Video system with self-diagnose function

摘要

A video signal processing section receives a video signal and performs predetermined processing for the video signal. A control information supplying section is coupled to the video signal processing section and supplies output control information for the predetermined processing. An information input section is coupled to the control information supplying section and receives input control information for changing the output control information. A determination section is coupled to the information input section and the control information supplying section, and determines a relationship between the output control information and the input control information. A display signal generating section is coupled to the determination section and generates a predetermined display signal corresponding to a determination result from the determination section. A synthesizing section is coupled to the video signal processing section and the display signal generating section, and synthesizes the predetermined display signal on the video signal. A display section receives and displays an output signal from the synthesizing section.