US 7,321,209 B2
Power buffering for rotating media storage devices
William J. Westerinen, Issaquah, Wash. (US); and Stephen R. Drake, Seattle, Wash. (US)
Assigned to Microsoft Corporation, Redmond, Wash. (US)
Filed on Mar. 23, 2005, as Appl. No. 11/88,617.
Prior Publication US 2006/0214612 A1, Sep. 28, 2006
Int. Cl. H02P 1/00 (2006.01)
U.S. Cl. 318—139  [318/439; 318/254; 318/138] 21 Claims
OG exemplary drawing
 
1. A system for buffering power associated with a storage device in a computing system, comprising:
a system power supply arranged to supply power to the components of the computing device;
a storage device component containing a storage device motor used to accelerate rotating media in the storage device;
a power storage device arranged to store power for future use; and
a power management circuit comprising a power augmentation circuit arranged to sense when the storage device motor is accelerating and to supply additional power from the power storage to the storage device motor in response thereto.