Energy-efficient video decoding schemes for embedded handheld devices

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• 作者：Yen-Lin Chen ; Ming-Feng Chang ; Wen-Yew Liang
• 关键词：DVFS ; Embedded platform ; Portable devices ; Low power software design
• 刊名：Multimedia Tools and Applications
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：75
• 期：6
• 页码：3281-3300
• 全文大小：2,101 KB
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• 作者单位：Yen-Lin Chen (1)
  Ming-Feng Chang (1)
  Wen-Yew Liang (1)
  
  1. Department of Computer Science and Information Engineering, National Taipei University of Technology, Taipei, 106, Taiwan
  
• 刊物类别：Computer Science
• 刊物主题：Multimedia Information Systems
  Computer Communication Networks
  Data Structures, Cryptology and Information Theory
  Special Purpose and Application-Based Systems
  
• 出版者：Springer Netherlands
• ISSN：1573-7721

文摘

Dynamic voltage and frequency scaling (DVFS) is an effective technique for reducing power consumption. Because of the increasing popularity of multimedia applications for portable consumer electronic devices, the importance of reducing their power consumption has become crucial. This paper proposes a table-based DVFS mechanism for frame decoding that can effectively reduce the power consumption of a processor by exploiting the frame-decoding complexity features. This proposed table-based DVFS predictor requires no prior knowledge on video decoders, and can be flexibly applied on different video codecs. This study implemented the table-based DVFS predictor on the PXA270 embedded platform and all benchmarks were encoded into various video coding formats, including H.264, VP8 and WMV formats. In addition, the proposed DVFS predictor was also ported on a modern platform NVIDIA JETSON TK1, and has demonstrated that the proposed algorithm can provide significant energy saving performance on high definition (HD) videos. The experimental results demonstrate that the energy consumption of decoding videos can be reduced from 6 to 21 %, whereas the frame drop rate is less than 3 %.