Methods and devices for compressing and uncompressing three color component graphics and/or digital video data for storage to and retrieval from a reduced memory space, while allocating memory space for pixel data special attribute, such as a transparency attribute. 24 bit video data, for example, may...http://www.google.com.tw/patents/US6778187?utm_source=gb-gplus-share專利 US6778187 - Methods and devices to process graphics and/or video data
