Graphic coloring system in a graphic-display system having separately stored shape/positional data and color data selectively combinable to form desired images of differing shapes and colors

Claim 1

A graphic display system having a display unit and selectively producing images, variously of the same shape and different colors and of the same color and different shapes, for display on the display unit and comprising: a main memory storing: a correspondence table of luminance values and color resource identifiers, image data based on color resource identifiers, luminance-position data, luminance-color correspondence data, and combinational data of the luminance-position data and luminance-color data; a controller; a system bus interconnecting the controller, the main memory, the image memory and the display unit; and the controller accessing the main memory through the system bus: to obtain luminance-position image data in accordance with the combinational data, to obtain the luminance of a given position in the image in accordance with the luminance-position image data, to determine whether or not the correspondence table of luminance and color resource identifiers contains a color resource corresponding to the luminance for the given position, and if the correspondence table contains the color resource, to obtain color values from the luminance-color correspondence data thereupon to write the color resource identifier to a corresponding point in the image data based on color resource identifiers but, if the correspondence table does not contain the color resource, then, to obtain the color resource and add it to the correspondence table to obtain color values from the luminance-color correspondence data and to set the color values for the color resource, and the controller continuing the above steps until all positions in the image have been processed, thereupon to transfer the image data based on color resource identifiers to a video random access memory to be accessed for producing an image display on the display unit.