The image encoding apparatus and encoding method thereof according to the present invention which encodes a multi-valued (color) image by dividing multi-valued (color) image data to blocks and constituting code data for each block, including the CPU which switches composition of the code data according...http://www.google.de/patents/US5576845?utm_source=gb-gplus-sharePatent US5576845 - Encoding apparatus and method for processing color data in blocks
