On the low-power design of DCT and IDCT for low bit-rate video codecs

N. August, D. Ha
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引用次数: 4

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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低比特率视频编解码器DCT和IDCT的低功耗设计
研究适用于低比特率无线视频系统的离散余弦变换(DCT)和反离散余弦变换(IDCT)电路的低功耗设计技术。这些技术包括跳过低能量DCT输入、跳过全零IDCT输入、低精度常数乘法器、时钟门控和低跃迁数据路径。最终的DCT和IDCT块比基准参考块减少了95%的平均功耗。
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