A Low-Cost Very Large Scale Integration Architecture For Idct With Sharing Techniques

Abstract- The intercommunications between the video devices using different standards are so much inconvenient thus video codec supporting multiple standards are more useful and more attractive. In this brief a low cost very large scale integration VLSI architecture is designed for multistandard inverse Discrete Cosine transform. It is used in multistandard decoder of MPEG-2 MPEG-4 ASP and VC-1 .Two circuit share strategies factor share FS an adder share AS are applied to the inverse transform architecture for saving its circuit resource. Pipelined stages are used in this Multistandard inverse transform to increase the operational speed.