Reduced-memory video decoder for compressed high-definition video data

摘要

A video decoder for decoding compressed high-definition video data. The video decoder includes compress and decompress circuits placed in the decoder's datapath to reduce the amount of video data that needs to be stored in frame buffer memory. Reference frame video data is compressed by the compress circuit for storage in frame buffer memory. A rate control circuit is provided to control the rate at which the compress circuit stores reference frame video data in the frame buffer memory. The decompress circuit reconstructs the reference frames on-the-fly for use in motion compensated prediction. Methods of decoding compressed high-definition video signals are also disclosed.