Browsing by Author "Yang, Shiang-Ren"

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A Power-Aware Quad-Voltage H.264 Encoder Chip for Wireless Panoramic Endoscope Applications
(2015)
Xiao, An-Tia
;
Yang, Shiang-Ren
;
Miao, Yuan-Hsiang
;
Cheng, Ching-Hwa
;
Guo, Jiun-In
Voltage scaling is an efficient way to reduce dynamic power consumption for digital circuits. In this paper, a hierarchical multiple voltage ( HMulti-Vdd) technology is proposed to design a power-aware H.264 intra-frame encoder for wireless panoramic endoscope applications. The proposed design adopts quad supply voltages to reduce power consumption without performance degradation. A progressive voltage difference technique is adopted in the proposed design for preventing from the penalty from using level shifters on performance and power consumption. The quad-voltage test chip has been successfully validated and has shown a 40% average reduction of power consumption, as compared to the same design using a single supply voltage.