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A Dynamic Quality-Adjustable H.264 Video Encoder for Power-Aware Video Applications

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6 Author(s)
Hsiu-Cheng Chang ; Dept. of Comput. Sci. & Inf. Eng., Nat. Chung-Cheng Univ., Chiayi, Taiwan ; Jia-Wei Chen ; Bing-Tsung Wu ; Ching-Lung Su
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This paper proposes a dynamic quality-adjustable H.264 baseline profile (BP) video encoder that comprises 470 Kgates and 13.3 kB SRAM in a core size of 4.3 ?? 4.3 mm2 using TSMC 0.13 ??m 1P8M CMOS technology. Exploiting parameterized algorithms for motion estimation and intra prediction, the proposed design can dynamically configure the encoding modes with the design trade-off between power consumption and video quality for various video encoding applications. In addition, the proposed basic unit (BU)-based rate control hardware can maintain a constant and stable bit rate for network video transmission. It achieves real-time H.264 video encoding on CIF, D1, and HD720@30 frames/s with 7 mW to 25 mW, 27 mW to 162 mW, and 122 mW to 183 mW power dissipation in different quality modes.

Published in:

Circuits and Systems for Video Technology, IEEE Transactions on  (Volume:19 ,  Issue: 12 )

Date of Publication:

Dec. 2009

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