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High throughput 2D DCT/IDCT processor for video coding

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3 Author(s)
Ruiz, G.A. ; Dept. of Electron. & Comput., Cantabria Univ., Santander, Spain ; Michell, J.A. ; Burón, A.M.

This paper describes the architecture of an 8×8 2-D DCT/IDCT processor with high throughput, reduced hardware, and a parallel-pipeline scheme. This architecture allows the processing elements and arithmetic units to work in parallel at half the frequency of the data input rate. A fully pipelined row-column decomposition method based on two 1-D DCTs and a transpose buffer based on D-type flip-flops are used. The processor has been implemented in a 0.35-μm CMOS process with a core area of 3mm2 and 11.7k gates. It meets the requirements of IEEE Std. 1180-1990. The data input rate frequency is 300 MHz with a latency of 172 cycles for 2-D DCT and 178 cycles for 2-D IDCT. The proposed design is compact and suitable for HDTV applications.

Published in:

Image Processing, 2005. ICIP 2005. IEEE International Conference on  (Volume:3 )

Date of Conference:

11-14 Sept. 2005

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