A 160 Mpixel/s IDCT processor for HDTV
Peter A. Ruetz, Po Tong · IEEE Micro · 1992
The architecture and characteristics of a fully functional 40 MHz device that performs the 8*8 inverse discrete cosine transform (IDCT) for digital HDTV decoders are presented. The IDCT chip converts four 14-b DCT coefficients into four 11-b pixel values each cycle. Fixed-coefficient multiplier Wallace trees in which partial products are rounded before summation help compute the inner products. The 31000-gate device was implemented in a 10.5 mm die using 1 mu m CMOS array-based process.>