Measurement-based Analysis of Power Consumption Patterns for Portable Multimedia Players

摘要

Portable multimedia player (PMP) devices have been gaining in its popularity with the emerging digital convergence of data, video, audio, etc. Since the PMP devices are typically equipped with DSP, bigger display, and a hard disk, efficient power management has become more crucial than the other portable devices. This paper establishes a hardware/software-based power measurement system based on data acquisition devices. Next, it measures the power consumed in commercial PMP devices under different types of events: the system boot & shutdown, video playback, and the use of different video-coding types. Finally, our analysis of the measured power consumption patterns reveals useful information to design low-power PMP devices.