A method and apparatus for interframe predictive video coding and decoding which avoid the accumulation of rounding errors and thus obtain high-quality reproduced pictures. A frame memory outputs at least one reference picture to a prediction picture calculation unit, according to motion vector information...http://www.google.com.hk/patents/US6282243?utm_source=gb-gplus-share專利 US6282243 - Apparatus and method for interframe predictive video coding and decoding with capabilities to avoid rounding error accumulation
