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Low Energy Motion Estimation Architecture using Energy Management Algorithm  

Kim Eung-sup (숭실대학교 전자공학과)
Lee Chanho (숭실대학교 전자공학과)
Abstract
Computation of multimedia data increases in portable devices with the advances of the mobile and personal communication services. The energy management of such devices is very important for the battery-powered operation hours. The motion estimation in a video encoder requires huge amount of computation, and hence, consumes the largest portion of the energy consumption. In this paper, we propose a novel architecture that a low energy management scheme can be applied with several fast-search algorithms. The energy-constrained Vdd hopping (ECVH) technique reduces power consumption of the motion estimation by adaptively changing the search algorithm, the operating frequency, and the supply voltage using the remaining slack time within given power-budget. We show that the ECVH can be applied to the architecture, and that the power consumption can be efficiently reduced.
Keywords
Motion estimation; low power; ECVH; MPEG;
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