An LSI has been fabricated and measured to demonstrate feasibility of VDD-hopping scheme in an embedded system level by executing MPEG4 CODEC. In the VDD-hopping, supply voltage of a processor is dynamically controlled by a hardware-software cooperative mechanism depending on workload of the processor. When the workload is about a half, the VDD-hopping is shown to reduce power to less than a quarter compared to the conventional fixed-VDD scheme. The power saving is achieved without degrading real-time features of MPEG4 CODEC.
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Hiroshi KAWAGUCHI, Gang ZHANG, Seongsoo LEE, Youngsoo SHIN, Takayasu SAKURAI, "A Controller LSI for Realizing VDD-Hopping Scheme with Off-the-Shelf Processors and Its Application to MPEG4 System" in IEICE TRANSACTIONS on Electronics,
vol. E85-C, no. 2, pp. 263-271, February 2002, doi: .
Abstract: An LSI has been fabricated and measured to demonstrate feasibility of VDD-hopping scheme in an embedded system level by executing MPEG4 CODEC. In the VDD-hopping, supply voltage of a processor is dynamically controlled by a hardware-software cooperative mechanism depending on workload of the processor. When the workload is about a half, the VDD-hopping is shown to reduce power to less than a quarter compared to the conventional fixed-VDD scheme. The power saving is achieved without degrading real-time features of MPEG4 CODEC.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e85-c_2_263/_p
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@ARTICLE{e85-c_2_263,
author={Hiroshi KAWAGUCHI, Gang ZHANG, Seongsoo LEE, Youngsoo SHIN, Takayasu SAKURAI, },
journal={IEICE TRANSACTIONS on Electronics},
title={A Controller LSI for Realizing VDD-Hopping Scheme with Off-the-Shelf Processors and Its Application to MPEG4 System},
year={2002},
volume={E85-C},
number={2},
pages={263-271},
abstract={An LSI has been fabricated and measured to demonstrate feasibility of VDD-hopping scheme in an embedded system level by executing MPEG4 CODEC. In the VDD-hopping, supply voltage of a processor is dynamically controlled by a hardware-software cooperative mechanism depending on workload of the processor. When the workload is about a half, the VDD-hopping is shown to reduce power to less than a quarter compared to the conventional fixed-VDD scheme. The power saving is achieved without degrading real-time features of MPEG4 CODEC.},
keywords={},
doi={},
ISSN={},
month={February},}
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TY - JOUR
TI - A Controller LSI for Realizing VDD-Hopping Scheme with Off-the-Shelf Processors and Its Application to MPEG4 System
T2 - IEICE TRANSACTIONS on Electronics
SP - 263
EP - 271
AU - Hiroshi KAWAGUCHI
AU - Gang ZHANG
AU - Seongsoo LEE
AU - Youngsoo SHIN
AU - Takayasu SAKURAI
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E85-C
IS - 2
JA - IEICE TRANSACTIONS on Electronics
Y1 - February 2002
AB - An LSI has been fabricated and measured to demonstrate feasibility of VDD-hopping scheme in an embedded system level by executing MPEG4 CODEC. In the VDD-hopping, supply voltage of a processor is dynamically controlled by a hardware-software cooperative mechanism depending on workload of the processor. When the workload is about a half, the VDD-hopping is shown to reduce power to less than a quarter compared to the conventional fixed-VDD scheme. The power saving is achieved without degrading real-time features of MPEG4 CODEC.
ER -