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Extended MPEG Video Format for Efficient Dynamic Voltage Scaling
Kwanhu BANG Sung-Yong BANG Eui-Young CHUNG
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E91-A
No.5
pp.1283-1287 Publication Date: 2008/05/01 Online ISSN: 1745-1337
DOI: 10.1093/ietfec/e91-a.5.1283 Print ISSN: 0916-8508 Type of Manuscript: LETTER Category: VLSI Design Technology and CAD Keyword: low power, energy, DVS, video, decoding, MPEG,
Full Text: PDF>>
Summary:
We present an extended MPEG video format for efficient Dynamic Voltage Scaling (DVS). DVS technique has been widely researched, but the execution time variation of a periodic task (i.e. MPEG decoding) is still a challenge to be tackled. Unlike previous works, we focus on the data (video stream) rather than the execution code to overcome such limitation. The proposed video format provides the decoding costs of frames to help the precise prediction of their execution times at client machines. The experimental results show that the extended format only increases the data size less than 1% by adding about 10 bits representing the decoding cost of each frame. Also, a DVS technique adjusted for the proposed format achieves 90% of efficiency compared to the oracle case, while keeping the run time overhead of the technique negligible.
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