A low power/high quality video compression algorithm using dynamic voltage control based on feed-forward analysis

摘要

In this paper, we describe a feed-forward dynamic voltage/clock-frequency control method enabling low power MPEG4 on a multi-regulated voltage CPU with combining the characteristics of the CPU and the characteristics of the video encoding process. In the case that the CPU has Freqnency-Voltage characteristics of 1.80 V@405 MHz to 1.06 V@189 MHz, the proposed method reduces the power consumption to 38% at low motion sequences or 68% at high motion sequences comparing with the conventional software video encoding method.