Patent ID: 6573901
Filing Date: 2003-06-03
Classification: G09G

Abstract:
A buffer in a display controller that provides output signals representing pixels in a color image for presentation on a display device, the buffer comprising:a first storage register to receive first parallel signals conveying bits representing all of the colors in a plurality of colors; a second storage register coupled to the first storage register to receive second parallel signals representing a first set of bits representing all of the colors in the plurality of colors; an information-storage memory; a memory-access controller coupled to the information-storage memory to retrieve second information from a location in the information-storage memory that represents a second set of bits representing all of the colors in the plurality of colors and to provide fourth parallel signals conveying the second information, and coupled to the second storage register to receive third parallel signals conveying first information that represents the first set of bits and to write the first information to the location in the information-storage memory; and an output-interface circuit coupled to the memory-access controller to receive signals conveying the second information and, in response, to generate output signals representing the second information as a portion of the image for presentation by the display device.