Future Directions of Media Processors(Special Issue on Multimedia, Network, and DRAM LSIs)

概要

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Media processors have emerged so that a single LSI can realize multiple multimedia functions, such as graphics, video, audio and telecommunication with effectively shared hardware and flexible software. First, the difference between media processors and general-purpose microprocessors with multimedia extensions is clarified. Features for processes and data in the multimedia applications are summarized and are followed by the multimedia enhancements that the recent general-purpose microprocessors use. The architecture for media processors reflects the further optimized utilization of these features and realizes better price-performance ratio than the generalpurpose microprocessors. Finally, the future directions of media processors and estimated, based on the performance, the power dissipation and the die size of the present microprocessors with multimedia extensions and the present media processors. The demand to improve the price-performance ratio for the whole system and to reduce the power consumption makes the media processor evolve into a system processor, which integrates not only the media processor but also the function of a generalpurpose microprocessor, various interfaces and DRAMs.
社団法人電子情報通信学会の論文
1998-05-25