Blocks of HDTV picture information are selected for transmission at a plurality of channel rates of an HDTV transmitter. The size of each block of HDTV picture information is dependent on a target distortion parameter for the HDTV picture information. As a result of this selection, a portion of each...http://www.google.com/patents/US5243419?utm_source=gb-gplus-sharePatent US5243419 - Soft coding for HDTV
