Patent ID: 7321371

Claim:
A data conversion device, which performs a data conversion process for causing a frame memory to memorize display data of a past frame and for causing a data conversion section to generate calculation data serving as display data of a frame after the past frame on a basis of the display data of the past frame and display data of a present frame, so as to output as output display data the calculation data to a display device, comprising: a compressing section for outputting compressed data to be memorized in the frame memory for each frame, the compressed data having been subjected to a compression process by replacing one or more components constituting the display data of each pixel and other one or more components constituting display data of a pixel existing around that pixel on a screen with one or more alternative values calculated by adding said one or more components and said other one or more components to each other after these components have been weighted so as to reduce an amount of data; and a restoring section for outputting restored data to the data conversion section so that the restored data is to be converted, the restored data having been subjected to a restoration process by reading out the compressed data from the frame memory and allotting the alternative value as display data for each corresponding pixel.