Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Systematic Approach to Design Low-Power Video Codec Cores | Hindawi Publishing Corporation EURASIP Journal on Embedded Systems Volume 2007 Article ID 64569 14 pages doi 2007 64569 Research Article A Systematic Approach to Design Low-Power Video Codec Cores Kristof Denolf 1 Adrian Chirila-Rus 2 Paul Schumacher 2 Robert Turney 2 Kees Vissers 2 Diederik Verkest 1 3 4 and HenkCorporaal5 1D6 IMEC Kapeldreef 75 3001 Leuven Belgium 2Xilinx Inc. 2100 Logic Drive San Jose CA 95124-3400 USA 3 Department of Electrical Engineering Katholieke Universiteit Leuven KUL 3001 Leuven Belgium 4 Department of Electrical Engineering Vrije Universiteit Brussel VUB 1050 Brussel Belgium 5 Faculty of Electrical Engineering Technical University Eindhoven Den Dolech 2 5612 AZ Eindhoven The Netherlands Received 2 June 2006 Revised 7 December 2006 Accepted 5 March 2007 Recommended by Leonel Sousa The higher resolutions and new functionality of video applications increase their throughput and processing requirements. In contrast the energy and heat limitations of mobile devices demand low-power video cores. We propose a memory and communication centric design methodology to reach an energy-efficient dedicated implementation. First memory optimizations are combined with algorithmic tuning. Then a partitioning exploration introduces parallelism using a cyclo-static dataflow model that also expresses implementation-specific aspects of communication channels. Towards hardware these channels are implemented as a restricted set of communication primitives. They enable an automated RTL development strategy for rigorous functional verification. The FPGA ASIC design of an MPEG-4 Simple Profile video codec demonstrates the methodology. The video pipeline exploits the inherent functional parallelism of the codec and contains a tailored memory hierarchy with burst accesses to external memory. 4CIF encoding at 30 ips consumes 71 mW in a 180 nm V UMC technology. Copyright 2007 Kristof Denolf et al. This is an open access article distributed under the .
