A MPEG-4 Accelerated Video Decoder Based on SoC

A design of MPEG-4 accelerated video decoder based on SoC is presented.The IDCT which has the most calculation in MPEG-4 decoding,inverse quantization and reconstruction,is implemented.In this design,algorithm,bus interface,memory architecture and chip area are optimized.So on the basis of meeting the requirement of real time decoding,low SoC bus bandwidth occupation and high level memory reuse have been achieved.