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Design and Implementation for Portable Low-Power Embedded System  

Lee, Jung-Hwan (LG전자 DMP연구소)
Kim, Myung-Jung (충북대학교 컴퓨터공학과)
Publication Information
Journal of KIISE:Computing Practices and Letters / v.13, no.7, 2007 , pp. 454-461 More about this Journal
Abstract
Portable embedded systems have recently become smaller in size and offer a variety of junctions for users. These systems require high performance processors to handle the many functions and also a small battery to fit inside the system. However, due to its size, the battery life has become a major issue. It is important to have both efficient power design and management for each function, while optimizing processor voltage and clock frequency in order to extend the battery life of the system. In this paper, we calculated the efficiency of power in optimizing power rail. This system has two microprocessors. One is used to play music and movie files while the other is for DMB. In order to reduce power consumption, the DMB microprocessor is turned of while music or videos are played. Lastly, DVFS is applied to the processor in the system to reduce power consumption. Experimental results of the implemented system have resulted in reduced power consumption.
Keywords
Low-Power design; Portable Embedded System; Power management; Portable Multimedia System; Low-Power Processor; Low-Power Embedded System;
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