Electrical computers and digital processing systems: support – Computer power control
Reexamination Certificate
2006-10-31
2006-10-31
Browne, Lynne H. (Department: 2116)
Electrical computers and digital processing systems: support
Computer power control
C713S323000, C713S324000, C713S320000, C307S066000
Reexamination Certificate
active
07131011
ABSTRACT:
A mechanism is provided for a personal computer to preserve user and system state data in the event of an AC power failure when the computer is in a standby state. When the AC power failure occurs, a switchover circuit connects a rechargeable energy storage medium, such as a rechargeable battery, to the power supply of the computer for powering components of computer, and the computer is awaken. A critical battery alarm is then issued to trigger the operating system of the computer to perform a transition into a hibernation state, during which the state data of the computer are persistently stored. The energy storage medium is disconnected from the power supply after the computer system has entered hibernation.
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Anderson Jason M.
Marshall Allen
Pierce Tony D.
Westerinen William J.
Wiley Shaun
Brown Michael J.
Browne Lynne H.
Woodcock & Washburn LLP
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