A video decoder capable of downsampling full resolution images on a block by block basis regardless of the downsampling rate is disclosed. When the applied downsampling rate does not divide evenly into the number of pixel values included in a block in the dimension being downsampled, the decoder generates...http://www.google.ca/patents/US5767907?utm_source=gb-gplus-sharePatent US5767907 - Drift reduction methods and apparatus
