A 50% Power Reduction in H.264/AVC HDTV Video Decoder LSI by Dynamic Voltage Scaling in Elastic Pipeline(VLSI Architecture,<Special Section>VLSI Design and CAD Algorithms)

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概要

• 論文の詳細を見る

• We propose an elastic pipeline that can apply dynamic voltage scaling (DVS) to hardwired logic circuits. In order to demonstrate its feasibility, a hardwired H.264/AVC HDTV decoder is designed as a real-time application. An entropy decoding process is divided into context-based adaptive binary arithmetic coding (CABAC) and syntax element decoding (SED), which has advantages of smoothing workload for CABAC and keeping efficiency of the elastic pipeline. An operating frequency and supply voltage are dynamically modulated every slot depending on workload of H.264 decoding to minimize power. We optimize the number of slots per frame to enhance power reduction. The proposed decoder achieves a power reduction of 50% in a 90-nm process technology, compared to the conventional clock-gating scheme.

• 社団法人電子情報通信学会の論文
• 2006-12-01

著者

• KAWAGUCHI Hiroshi

  Department of Orthopaedic Surgery, The University of Tokyo

• YOSHIMOTO Masahiko

  Department of Computer Science and Systems Engineering, Kobe University

• Yoshimoto Masahiko

  Mitsubishi Electric Corporation

• Kawaguchi Hiroshi

  Kobe Univ. Kobe‐shi Jpn

• Morita Yasuhiro

  Department Of Computer Science And Systems Engineering Kobe University

• MORITA Yasuhiro

  Kobe University

• Kawaguchi Hiroshi

  Department Of Computer Science And Systems Engineering Kobe University

• Kawaguchi Hiroshi

  Department Of Chemistry Faculty Of Science Kochi University

• Yoshimoto Masahiko

  Department Of Computer Science And Systems Engineering Kobe University

• Yoshimoto Masahiko

  System Lsi Development Center Mitsubishi Electric Corporation

• KAWAKAMI Kentaro

  Graduate School of Science and Technology, Kobe University

• TAKEMURA Jun

  Graduate School of Natural Science and Technology, Kanazawa University

• KURODA Mitsuhiko

  Department of Computer and Systems Engineering, Kobe University

• Yoshimoto M

  Department Of Computer Science And Systems Engineering Kobe University

• Kuroda Mitsuhiko

  Department Of Clinical And Laboratory Science Fukui Medical School

• Kawakami Kentaro

  Graduate School Of Science And Technology Kobe University

• Takemura Jun

  Graduate School Of Natural Science And Technology Kanazawa University

• Kawaguchi Hiroshi

  Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University

• Yoshimoto Masahiko

  Department of Computer and Systems Engineering, Kobe University

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