Patent ID: 6653991
Filing Date: 2003-11-25
Classification: G09G,H04N

Abstract:
A device for controlling a video signal gain, comprising:a key input part having a color selection key and a level control key; a storage part for storing RGB gain values and RGB count values; a control part for reading the RGB gain values and the RGB count values from the storage part, for controlling count values of selected colors according to an input state of the color selection key and an input state of the level control key, for calculating difference values by comparing the controlled count values of the selected colors with count values of other colors not controlled, for controlling the RGB gain values according to the calculated difference values, and for updating the RGB gain values in the storage part using the calculated difference values; and a video processing part for controlling a magnitude of an RGB video signal based on the RGB gain values controlled in the control part, and for displaying the controlled magnitude of the RGB video signal on a cathode ray tube.