Compression-Aware Energy Optimization for Video Decoding Systems With Passive Power

The objective of dynamic voltage scaling (DVS) is to adapt the frequency and voltage for configurable platforms to obtain energy savings. DVS is especially attractive for video decoding systems due to their time-varying and highly complex workload and because the utility of decoding a frame is solely depending on the frame being decoded before its display deadline. Several DVS algorithms have been proposed for multimedia applications. However, the prior work did not take into account the video compression algorithm specifics, such as considering the temporal dependencies among frames and the required display buffer. Moreover, the effect of the passive (leakage) power when performing DVS for multimedia systems was not explicitly considered. In this paper, we determine the optimal scheduling of the active and passive states to minimize the total energy for video decoding systems. We pose our problem as a buffer-constrained optimization problem with a novel, compression-aware definition o...

• Type: Journal
• Year: 2008
• Where: TCSV
• Authors: Emrah Akyol, Mihaela van der Schaar
• Keywords: Optimization Problem, Several DVS Algorithms, TCSV 2008, Video Decoding Systems