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Practical Design Space Exploration of an H264 Decoder for Handheld Devices Using a Virtual Platform

Author(s): M. Gligor, N. Fournel, F. Pétrot, F. Colas-Bigey, A.-M. Fouillard, Ph. Teninge, M. Coppola

Doc. Source: Power and Timing Modeling, Optimization and Simulation (PATMOS’09)

H264 is a promising standard for mobile appliances since it allows to play on the tradeoff between data transmission rates and processing needs. This tradeoff is a common issue in mobile appliance design as it leaves space for power savings. We propose here a virtual platform based global approach, i.e. investigating hardware solutions, software solutions and both, to define a set of energy-optimized degraded operating modes for a H264 decoder software. Results of this exploration show that reasonable energy savings for degraded modes can be achieved without loosing too much image quality.