Implementation of 2-D IDCT based on distributed algorithm

In order to present an ASIC implementation method of 2-D inverse discrete cosine transform based on distributed algorithm, in the design of 1-D IDCT, a Chen-based fast IDCT algorithm was utilized. Multiplier accumulators were realized by basing on distributed algorithm, which was used to reduce the hardware amount and enhance the speed performance. According to the design method, VHDL simulation, synthesis and layout design of system were implemented. The result shows that this 2-D IDCT ASIC design owns best timing performance comparing with other designs and the design period of this ASIC is lessened and system maintenance becomes easy.