Title:
MOVING PICTURE ENCODING OR DECODING SYSTEM AND MOVING PICTURE ENCODING OR DECODING METHOD
Document Type and Number:
WIPO Patent Application WO/2005/062621
Kind Code:
A1
Abstract:
[PROBLEMS] To provide a moving picture encoding or decoding system and moving picture encoding or decoding method capable of reducing power consumption as compared to the conventional technique. [MEANS FOR SOLVING PROBLEMS] The moving picture encoding or decoding system includes: necessary operation amount calculation means (2) for calculating an operation amount necessary for encoding or decoding of the current frame; and operation power voltage/substrate bias voltage/operation frequency calculation means (3) for calculating the operation power voltage, substrate bias voltage, and operation frequency capable of encoding or decoding the necessary operation amount within a time assigned to the current frame encoding or decoding. A processor (1) performs encoding or decoding of the current frame while performing a constant operation with the operation frequency, the operation power voltage, and the substrate bias voltage calculated.
Inventors:
YOSHIMOTO MASAHIKO (JP)
KAWAKAMI KENTARO (JP)
KANAMORI MIWAKO (JP)
MORITA YASUHIRO (JP)
OHIRA HIDEO (JP)
KAWAKAMI KENTARO (JP)
KANAMORI MIWAKO (JP)
MORITA YASUHIRO (JP)
OHIRA HIDEO (JP)
Application Number:
PCT/JP2004/018312
Publication Date:
July 07, 2005
Filing Date:
December 08, 2004
Export Citation:
Assignee:
KANAZAWA UNIVERSITY TECHNOLOGY (JP)
YOSHIMOTO MASAHIKO (JP)
KAWAKAMI KENTARO (JP)
KANAMORI MIWAKO (JP)
MORITA YASUHIRO (JP)
OHIRA HIDEO (JP)
YOSHIMOTO MASAHIKO (JP)
KAWAKAMI KENTARO (JP)
KANAMORI MIWAKO (JP)
MORITA YASUHIRO (JP)
OHIRA HIDEO (JP)
International Classes:
H04N7/24; H04N7/26; H04N7/50; (IPC1-7): H04N7/24
Foreign References:
| JP2003324735A | 2003-11-14 |
Other References:
KAWAGUCHI H. ET AL: "An LSI for Vdd-Hopping and MPEGI System Based on the Chip.", IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEM., no. 5, 2001, pages 918 - 921, XP010542007
LEE S. ET AL: "Run-time Voltgae Hopping for low-power Real-time Systems.", PROC.DESIGN AUTOMATION CONFERENCE, BEIKOKU, IEEE., no. 6, 2000, pages 806 - 809, XP002991852
KAO J.T. ET AL: "A 175-mV Multiply-Accumulate Unit Using an Adaptive Supply Voltage and Body Bias Architecture.", IEEE JOURNAL OF SOLID-STATE CIRCUITS., vol. 37, no. 11, 2002, pages 1545 - 1554, XP001222652
NOSE K. ET AL: "VTH-Hopping Scheme to Reduce Subthreshold Leakage for low-Power Processors.", IEEE JOURNAL OF SOLID-STATE CIRCUITS., vol. 37, no. 3, 2002, pages 413 - 419, XP001222672
KAWAKAMI K. ET AL: "Feedforward Doteki Den'atsu Seigyo ni yoru MPEG4 Teishohi Denryokuka Algorithm.", THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS GIJUTSU KENKYU HOKOKU ICD2002-57 NIPPON, THE INSTITUTE OF ELECTRONICS., no. 8, 2002, pages 67 - 72, XP002991853
KAWAKAMI K. ET AL: "Feedforward-Gata Doteki Den'atsu Seigyo ni yoru MPEG4 Teishohi Denryokuka Algorithm.", THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATIONS ENGINEERS GIJUTSU KENKYU HOKOKU ICD2003-30., no. 5, 2003, pages 25 - 30, XP002991854
MORITA Y. ET AL: "'D-23 Feedforward Seigyo o Mochiita MPEG4 Tesihohi Denryokuka Algorithm (2) -2 Dankai Dosa Den'atsu_shuhasu Seigyo Tekiyoji no Shohi Denryoku Sakugen Koka no Mitsumori.", HEISEI 15 NENDO INSTITUTES OF ELECTRICAL AND INFORMATION ENGINEERS, JAPAN HOKURIKU SHIBU RENGO TAIKAI KOEN RONBUNSHU., 22 September 2003 (2003-09-22), pages 192, XP002991855
LEE S. ET AL: "Run-time Voltgae Hopping for low-power Real-time Systems.", PROC.DESIGN AUTOMATION CONFERENCE, BEIKOKU, IEEE., no. 6, 2000, pages 806 - 809, XP002991852
KAO J.T. ET AL: "A 175-mV Multiply-Accumulate Unit Using an Adaptive Supply Voltage and Body Bias Architecture.", IEEE JOURNAL OF SOLID-STATE CIRCUITS., vol. 37, no. 11, 2002, pages 1545 - 1554, XP001222652
NOSE K. ET AL: "VTH-Hopping Scheme to Reduce Subthreshold Leakage for low-Power Processors.", IEEE JOURNAL OF SOLID-STATE CIRCUITS., vol. 37, no. 3, 2002, pages 413 - 419, XP001222672
KAWAKAMI K. ET AL: "Feedforward Doteki Den'atsu Seigyo ni yoru MPEG4 Teishohi Denryokuka Algorithm.", THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS GIJUTSU KENKYU HOKOKU ICD2002-57 NIPPON, THE INSTITUTE OF ELECTRONICS., no. 8, 2002, pages 67 - 72, XP002991853
KAWAKAMI K. ET AL: "Feedforward-Gata Doteki Den'atsu Seigyo ni yoru MPEG4 Teishohi Denryokuka Algorithm.", THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATIONS ENGINEERS GIJUTSU KENKYU HOKOKU ICD2003-30., no. 5, 2003, pages 25 - 30, XP002991854
MORITA Y. ET AL: "'D-23 Feedforward Seigyo o Mochiita MPEG4 Tesihohi Denryokuka Algorithm (2) -2 Dankai Dosa Den'atsu_shuhasu Seigyo Tekiyoji no Shohi Denryoku Sakugen Koka no Mitsumori.", HEISEI 15 NENDO INSTITUTES OF ELECTRICAL AND INFORMATION ENGINEERS, JAPAN HOKURIKU SHIBU RENGO TAIKAI KOEN RONBUNSHU., 22 September 2003 (2003-09-22), pages 192, XP002991855
Attorney, Agent or Firm:
Kimori, Yuhei (4-4-25 Sainen, Kanazawa-sh, Ishikawa 24, JP)
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