Presentation 2003/7/17
Frequency-Voltage Cooperative Power Reduction for Multi-tasking Multimedia Applications
Satoshi MISAKA, Keisuke TOYAMA, Toshiyuki ARITSUKA, Kazuo AISAKA, Kunio UCHIYAMA, Hiroshi KAWAGUCHI, Takayasu SAKURAI,
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Abstract(in English) Mobile applications, especially for cellular phones, need to satisfy the requirement for low power consumption keeping multimedia performance high enough. Thus software and hardware combined approach for low power becomes really important. One of such techniques is frequency-voltage cooperative control that lowers the MPU clock and core voltage at the same time when maximum execution speed is not necessary. We applied multi-tasking audio-visual player to frequency-voltage cooperative control with application processor. Frequency-voltage cooperative control makes 50% current reduction under multi-tasking audio-visual player.
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Keyword(in English) Low Power / Multi-Task / Application Processor / Frequency-Voltage Cooperative Control / Deadline
Paper # ICD2003-40
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Conference Date 2003/7/17(1days)
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Registration To Integrated Circuits and Devices (ICD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Frequency-Voltage Cooperative Power Reduction for Multi-tasking Multimedia Applications
Sub Title (in English)
Keyword(1) Low Power
Keyword(2) Multi-Task
Keyword(3) Application Processor
Keyword(4) Frequency-Voltage Cooperative Control
Keyword(5) Deadline
1st Author's Name Satoshi MISAKA
1st Author's Affiliation Central Research Laboratory, Hitachi, Ltd.()
2nd Author's Name Keisuke TOYAMA
2nd Author's Affiliation Central Research Laboratory, Hitachi, Ltd.
3rd Author's Name Toshiyuki ARITSUKA
3rd Author's Affiliation Central Research Laboratory, Hitachi, Ltd.
4th Author's Name Kazuo AISAKA
4th Author's Affiliation Central Research Laboratory, Hitachi, Ltd.
5th Author's Name Kunio UCHIYAMA
5th Author's Affiliation Central Research Laboratory, Hitachi, Ltd.
6th Author's Name Hiroshi KAWAGUCHI
6th Author's Affiliation Center for Collaborative Research, University of Tokyo
7th Author's Name Takayasu SAKURAI
7th Author's Affiliation Center for Collaborative Research, University of Tokyo
Date 2003/7/17
Paper # ICD2003-40
Volume (vol) vol.103
Number (no) 216
Page pp.pp.-
#Pages 6
Date of Issue