Based on the research on the clustered Ad Hoc routing protocols, this paper proposed to improve CGSR protocol under the conditions of balanced energy consumption and prolonged lifetime. Energy consumption was reduced by cutting down the message transmition. Energy restriction of Clusterhead reduced the impact of excessive energy consumption on the network life. NS-2 simulation results indicate the lifetime of network increases when new protocol CBSR is used.

The motion estimation algorithm in the MPEG-4 video encoding was studied and the potential parallelism in the algorithm was analyzed. Then the multi-core parallel computing concept was used in the directional diamond searching algorithm, and a prediction mechanism was introduced to improve the degree of parallelism. Then the directional diamond Motion estimation algorithm based on parallelism and prediction (PPDDME) was proposed. The experimental results coming from PC and the Omap5910 embedded platform show that the encoding speed is improved efficiently and the compression quality is the same as the serial algorithm.