Erysiphaceae of Korea

Abstract: As the usage of personal mobile devices increase, there are many researches for more efficient and convenient mobile systems. Especially, reducing energy consumption is one of the critical issues for those systems owing to their portability. Dynamic voltage scaling (DVS) has been suggested to reduce the processor power which is highly consumed energy component. In this paper, we propose a couple of DVS algorithms for MPEG decoder using variance of MPEG frame decoding time. The processor power is measured out frame by frame using Wattch, power estimator based on instruction set simulator. As a result, our algorithm shows about 70 % ~ 85 % energy reduction of processor with DVS per frame unit