The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2006
Filed:
Mar. 06, 2003
William J. Westerinen, Sammamish, WA (US);
Jason M. Anderson, Snoqualmie, WA (US);
Allen Marshall, Woodinville, WA (US);
Tony D. Pierce, Bellevue, WA (US);
Shaun Wiley, Seattle, WA (US);
William J. Westerinen, Sammamish, WA (US);
Jason M. Anderson, Snoqualmie, WA (US);
Allen Marshall, Woodinville, WA (US);
Tony D. Pierce, Bellevue, WA (US);
Shaun Wiley, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
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.