REDUCED-MEMORY VIDEO DECODER FOR COMPRESSED HIGH-DEFINITION VIDEO DATA

摘要

A video decoder (30) for decoding compressed high-definition video data (22). The video decoder (30) includes a down-converter (46) and an up-converter (48) placed in the decoder's (30) data path to reduce the amount of video data (22) that needs to be stored in frame buffer memory (40). Reference frame video data is decimated and low-pass filtered by the down-converter (46) for storage in a frame buffer memory (40). The up-converter (48) uses interpolation and low-pass with high boost filtering (82) to reconstruct the reference frames on-the-fly for use in motion compensated prediction.