DocumentCode :
1890621
Title :
Run-time power control scheme using software feedback loop for low-power real-time applications
Author :
Lee, Seongsoo ; Sakurai, Takayasu
Author_Institution :
Center for Collaborative Res., Tokyo Univ., Japan
fYear :
2000
fDate :
9-9 June 2000
Firstpage :
381
Lastpage :
386
Abstract :
A novel hardware-software cooperative power control scheme, namely a software feedback loop, is proposed to lower power consumption of VLSI systems. The proposed runtime voltage and frequency control scheme guarantees the real-time execution of applications. It avoids interface problems and also provides "binary-code compatibility". Using a software analysis environment, the power control scheme is shown to achieve more than 90% power reduction for real-time MPEG-4 SP@L1 video encoding, taking into consideration the transition delay between voltage and frequency levels.
Keywords :
VLSI; circuit feedback; computer architecture; digital signal processing chips; hardware-software codesign; power consumption; power control; real-time systems; video equipment; MPEG-4 SP@L1 video encoding; VLSI; binary-code compatibility; frequency control; hardware-software cooperative power control; low-power real-time applications; power consumption; power control chip; power reduction; real-time encoding; real-time execution; run-time power control; runtime voltage; software analysis; software feedback loop; transition delay; Application software; Delay; Encoding; Energy consumption; Feedback loop; Frequency control; MPEG 4 Standard; Power control; Runtime; Very large scale integration;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Design Automation Conference, 2000. Proceedings of the ASP-DAC 2000. Asia and South Pacific
Conference_Location :
Yokohama, Japan
Print_ISBN :
0-7803-5973-9
Type :
conf
DOI :
10.1109/ASPDAC.2000.835129
Filename :
835129
Link To Document :
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