Static information storage and retrieval – Powering
Reexamination Certificate
2007-11-16
2009-06-23
Nguyen, Viet Q (Department: 2827)
Static information storage and retrieval
Powering
C365S227000, C365S228000, C365S229000, C365S063000
Reexamination Certificate
active
07551508
ABSTRACT:
An energy efficient storage device using per-element selectable power supply voltages provides energy conservation in storage devices while maintaining a particular performance level. The storage device is partitioned into multiple elements, which may be sub-arrays, rows, columns or individual storage cells. Each element has a corresponding virtual power supply rail that is provided with a selectable power supply voltage. The power supply voltage provided to the virtual power supply rail for an element is set to the minimum power supply voltage unless a higher power supply voltage is required for the element to meet performance requirements. A control cell may be provided within each element that provides a control signal that selects the power supply voltage supplied to the corresponding virtual power supply rail. The state of the cell may be set via a fuse or mask, or values may be loaded into the control cells at initialization of the storage device.
REFERENCES:
patent: 5297097 (1994-03-01), Etoh et al.
patent: 5687382 (1997-11-01), Kojima et al.
patent: 6031781 (2000-02-01), Tsuji et al.
patent: 6107700 (2000-08-01), Ishikawa et al.
patent: 6208171 (2001-03-01), Kumagai et al.
patent: 6233181 (2001-05-01), Hidaka
patent: 6291869 (2001-09-01), Ooishi
patent: 6292413 (2001-09-01), Kato et al.
patent: 6459301 (2002-10-01), Hidaka
patent: 6515930 (2003-02-01), Jacquet et al.
patent: 6795328 (2004-09-01), Kato et al.
patent: 7055007 (2006-05-01), Flautner et al.
patent: 7085190 (2006-08-01), Worley et al.
patent: 7327630 (2008-02-01), Park
patent: 2005/0253462 (2005-11-01), Falkowski et al.
patent: 2007/0141731 (2007-06-01), Hemink et al.
patent: 2007/0200593 (2007-08-01), Agarwal et al.
patent: 2008/0162954 (2008-07-01), Lassa et al.
patent: 2008/0229121 (2008-09-01), Lassa et al.
Joshi Rajiv V.
Kanj Rouwaida N.
Kuang Jente B
Nassif Sani R.
Ngo Hung Cai
Handelsman Libby Z.
Harris Andrew M.
International Business Machines - Corporation
Mitch Harris Atty at Law, LLC
Nguyen Viet Q
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