CACHING DATA FOR VIDEO EDGE FILTERING

摘要

An embodiment of the present invention pertains to an apparatus and method for caching pixel data used in filtering edges of video macroblocks. Pixel data which are required to edge filter subsequent macroblocks are temporarily stored in a cache memory. When a macroblock is subsequently being processed, this cached pixel data is read out and used to filter the corresponding edge(s). By caching select pixel values rather than writing them to external memory, the number of memory accesses is dramatically reduced.