Control signal generating circuit

摘要

In a display apparatus in which a marker signal resulted by combining primary color signals of predetermined levels to be an arbitrary pattern and designating a specified area of a screen is detected, the screen is divided into a plurality of areas and a display formed of an image different in picture quality is performed at every one of the plurality of areas, a control signal for suppressing the luminance of the marker signal is generated, to thereby improve such a phenomenon that the marker signal is conspicuous.