A method for compressing image data at a fixed rate and a device thereof is used for a scanning device capturing and generating image data. When the image data is scanned, the scanning areas of each color data are respectively selected to compress image data with a fixed rate. A decompression method...http://www.google.com.au/patents/US6628438?utm_source=gb-gplus-sharePatent US6628438 - Method for compressing image data with fixed rate and device therefor