Apparatus and Method Of Controlling Picture Quality In Flat Display Panel

PURPOSE: An apparatus and a method for controlling the image quality of a flat display panel are provided to process a moving picture in real time without an extra frame memory, and to improve contrast of a moving picture without flickering. CONSTITUTION: A first data converting unit(14) converts RGB data into brightness signal data and color difference signal data. A data area selecting unit(12) designates an effective data area for controlling the quality of a picture. A contrast control unit decides an approximate mean value to a brightness signal in a frame at the designated data area to be used as a screen distribution function, so that a contrast rate is adaptively improved according to screen distribution. A second data converting unit(24) converts brightness signal data and color difference signal data with the improved contrast rate into the RGB data to be appropriate for a display panel.