Title:
SYSTEM AND PROGRAM FOR MOVING PICTURE ENCODING OR DECODING
Document Type and Number:
Japanese Patent JP3772183
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a system and program for moving picture encoding or decoding for realizing a reduction in the power consumption more than that by a conventional technology.
SOLUTION: The system is provided with: a required arithmetic quantity calculation means 2 for calculating a required arithmetic quantity required for encoding or decoding a prescribed frame; an operating voltage/operating frequency calculation means 3 for calculating an operating voltage and an operating frequency for performing encoding or decoding processing for the required arithmetic quantity within a time pre-assigned to the encoding or decoding processing of the prescribed frame; an operating voltage/operating frequency control means 4 for activating a processor at the operating voltage/ operating frequency calculated by the operating voltage/operating frequency calculation means 3; and a moving picture encoding or decoding means 5 applies encoding or decoding processing to the prescribed frame while the operating voltage/operating frequency control means 4 constantly activates the processor at the calculated operating voltage/operating frequency.
Inventors:
Masahiko Yoshimoto
Kentaro Kawakami
Hero Ohira
Kentaro Kawakami
Hero Ohira
Application Number:
JP2003048535A
Publication Date:
May 10, 2006
Filing Date:
February 26, 2003
Export Citation:
Assignee:
Kanazawa University TL O
International Classes:
H04N19/102; H03M7/30; H04N7/24; H04N19/00; H04N19/134; H04N19/139; H04N19/14; H04N19/146; H04N19/156; H04N19/159; H04N19/196; H04N19/423; H04N19/503; H04N19/577; H04N19/61; H04N19/625; H04N19/91; (IPC1-7): H04N7/24; H03M7/30
Other References:
Hiroshi Kawaguchi, Gang Zhang, Seongsoo Lee, Takayasu Sakurai," An LSI for Vdd-Hopping and MPEG1 System Based on the Chip ",IEEE International Symposium on Circuits and System 2001,米国,IEEE,2001年 5月,pp.918-921
Seongsoo Lee, Takayasu Sakurai," Run-time Voltage Hopping for Low-power Real-time Systems ",Proc. Design Automation Conference,米国,IEEE,2000年 6月,pp.806-809
James T. Kao, Masayuki Miyazaki," A 175-mV Multiply-Accumulate Unit Using an Adaptive Supply Voltage and Body Bias Architecture ",IEEE Journal of Solid-State Circuits,米国,IEEE,2002年11月,Vol.37, No.11,pp.1545-1554
川上健太郎、大平英雄、深山正幸、吉本雅彦,「多段電圧制御可能なCPU上でのダイナミック電圧制御による動画像符号化の低消費電力化の一検討」,2002年電子情報通信学会総合大会講演論文集,日本,電子情報通信学会,2002年 3月30日,エレクトロニクス2 ,99頁
川上健太郎、大平英雄、深山正幸、吉本雅彦,「フィードフォワード動的電圧制御によるMPEG4低消費電力化アルゴリズム」,電子情報通信学会技術研究報告,日本,電子情報通信学会,2002年 8月,SDM2002-146, ICD2002-57,67~72頁
Seongsoo Lee, Takayasu Sakurai," Run-time Voltage Hopping for Low-power Real-time Systems ",Proc. Design Automation Conference,米国,IEEE,2000年 6月,pp.806-809
James T. Kao, Masayuki Miyazaki," A 175-mV Multiply-Accumulate Unit Using an Adaptive Supply Voltage and Body Bias Architecture ",IEEE Journal of Solid-State Circuits,米国,IEEE,2002年11月,Vol.37, No.11,pp.1545-1554
川上健太郎、大平英雄、深山正幸、吉本雅彦,「多段電圧制御可能なCPU上でのダイナミック電圧制御による動画像符号化の低消費電力化の一検討」,2002年電子情報通信学会総合大会講演論文集,日本,電子情報通信学会,2002年 3月30日,エレクトロニクス2 ,99頁
川上健太郎、大平英雄、深山正幸、吉本雅彦,「フィードフォワード動的電圧制御によるMPEG4低消費電力化アルゴリズム」,電子情報通信学会技術研究報告,日本,電子情報通信学会,2002年 8月,SDM2002-146, ICD2002-57,67~72頁
Attorney, Agent or Firm:
Yuhei Kimori