Abstract

Examines low power design techniques for discrete cosine transform (DCT) and inverse discrete cosine transform (IDCT) circuits applicable for low bit rate wireless video systems. The techniques include skipping low energy DCT input, skipping all-zero IDCT input, low precision constant multipliers, clock gating, and a low transition data path. The final DCT and IDCT blocks reduce average power dissipation by 95% over baseline reference blocks.

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