DocumentCode :
3499112
Title :
A technique for energy versus quality of service trade-off for MPEG-2 decoder
Author :
Srinivasan, Krishnan ; Ramamurthi, Vijay ; Chatha, Karam S.
Author_Institution :
Dept. of CSE, Arizona State Univ., Tempe, AZ, USA
fYear :
2004
fDate :
19-20 Feb. 2004
Firstpage :
313
Lastpage :
316
Abstract :
Many implementations of MPEG-2 decoder permit a certain degradation in PSNR due to human audio/video perceptory imperfections. This paper presents a technique for exploiting the acceptable degradation in PSNR towards energy minimization by application of dynamic voltage management techniques. The technique is based on a two phase approach that includes static characterization and dynamic adaptation. We present a novel model that relates the type of the frame, size of the frame, and number of macroblocks processed to the PSNR of the stream. The model is utilized for characterizing the benchmark streams. The results of static characterizations are then applied towards general streams by dynamic adaptations. The experimental results demonstrate that for an acceptable PSNR of 30 to 32 dB, the technique results in energy savings from 24% to over 85%.
Keywords :
codecs; digital signal processing chips; quality of service; video coding; voltage control; MPEG-2 decoder; PSNR; benchmark streams; dynamic adaptation; dynamic adaptations; dynamic voltage management; energy minimization; energy savings; human audio; human video; perceptory imperfections; quality of service; static characterization; Decoding; Degradation; Energy management; Humans; Layout; PSNR; Quality of service; Streaming media; Very large scale integration; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
VLSI, 2004. Proceedings. IEEE Computer society Annual Symposium on
Print_ISBN :
0-7695-2097-9
Type :
conf
DOI :
10.1109/ISVLSI.2004.1339569
Filename :
1339569
Link To Document :
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