Reducing multimedia decode power using feedback control | IEEE Conference Publication | IEEE Xplore

Reducing multimedia decode power using feedback control


Abstract:

Despite recent advances, battery life continues to be a limiting factor in mobile multimedia systems. Significant energy savings can be achieved by adapting systems at ru...Show More

Abstract:

Despite recent advances, battery life continues to be a limiting factor in mobile multimedia systems. Significant energy savings can be achieved by adapting systems at runtime to match the execution requirements of different tasks. We introduce an online dynamic voltage/frequency scaling (DVS) feedback technique that reduces voltage and frequency to match the playback rate. A PI controller adjusts the decoder's speed to keep constant the occupancy of the buffer between the decoder and the display, effectively matching the average decode rate to the display rate without the need for any off-line profiling. MPEG simulation results show that this technique reduces decoder power consumption while providing strong real-time guarantees.
Date of Conference: 13-15 October 2003
Date Added to IEEE Xplore: 27 October 2003
Print ISBN:0-7695-2025-1
Print ISSN: 1063-6404
Conference Location: San Jose, CA, USA

References

References is not available for this document.