Memory-Hierarchy-Based Power Reduction for H. 264/AVC Video Decoder

Abstract

Memory storage is crucial power factor in H.264/AVC video decoding system. In this paper, we exploit three-level of memory hierarchy to break the data dependency and reduce the number of access for external memory. Further, we apply line-pixel-lookahead (LPL) scheme to make a compromise between power consumption and internal memory cost. Experimental results prove that about 50% of memory power reduction can be achieved as compared to comparable decoders without exploiting memory hierarchy (To Wei Chen et al., 2005 and Hu et al., 2004)