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A Low-Power High-Performance H.264/AVC Intra-Frame Encoder for 1080pHD Video

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5 Author(s)
Huang-Chih Kuo ; Department of Computer Science, National Tsing Hua University, HsinChu, Taiwan, R.O.C. ; Li-Cian Wu ; Hao-Ting Huang ; Sheng-Tsung Hsu
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H.264/AVC intra-frame encoding contains several computation-intensive coding tools that form a long data dependency loop that is difficult to speed up. In this paper, we present a low-power and high-performance H.264/AVC intra-frame encoder. We propose several novel approaches to alleviate the performance bottleneck caused by the long data dependency loop among 4 × 4 luma blocks, integrate an efficient CABAC entropy encoder, and apply a clock-gating technique to reduce power consumption. Synthesized into a TSMC 0.13 μm CMOS cell library, our design requires 265.3 K gates at 114 MHz and consumes 23.56 mW to encode 1080pHD (1920 × 1088) video sequences at 30 frames per second (fps). It also delivers the same video quality as the H.264/AVC reference software. Compared with all state-of-the-art designs, our design has a lower working frequency and achieves both better bit-rate saving and lower power consumption.

Published in:

IEEE Transactions on Very Large Scale Integration (VLSI) Systems  (Volume:19 ,  Issue: 6 )