Patent ID: 7911535

Claim:
An image signal processing apparatus comprising: a memory configured to store image data for a demonstration to describe functions of the apparatus; a set module configured to output a set signal to order reproduction of the image data; an image reader configured to read the image data from the memory in response to the set signal; and a display controller configured to output the read image data for displaying to execute a demonstration mode, shift the demonstration mode to a display mode in which on-air image data is output for displaying when the demonstration mode ends, and shift the display mode to the demonstration mode after no operation is performed for a predetermined period of time, wherein the display controller further includes a means for outputting an instruction to perform a function of demonstration in the demonstration mode, and a means for alternately outputting, on one screen, an on-state screen of a function to set image quality and an off-state screen of the function to set image quality.