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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.:

US 6463545 B1

PDFFull Text
Date of Patent:
Oct. 08, 2002

Filed:

Oct. 01, 1999

Battery calibration system for discharging a rechargeable battery and generating an ac detect signal to power management logic to maintain normal computer operation even when battery is below certain level

Applicant:
Inventors:

Andrew J. Fisher, Spring, TX (US);

Steven D. Holehan, Magnolia, TX (US);

Jonathan E. James, Houston, TX (US);

Jon H. Liu, Houston, TX (US);

Thomas T. Pham, Cypress, TX (US);

Donald G. Scharnberg, Pasadena, TX (US);

Assignee:

Compaq Information Technologies Group, L.P., Houston, TX (US);

Attorney:

Conley, Rose & Tayon, P.C.

Primary Examiner:

Thomas Lee

Assistant Examiner:

Nitin C Patel

Int. Cl.
CPC ...
G06F 1/28 ; G06F 1/30 ; G06F 1/26 ;
U.S. Cl.
CPC ...
G06F 1/28 ; G06F 1/30 ; G06F 1/26 ;
Abstract

A laptop computer system executes automatic battery calibration to improve the accuracy of the battery's internal charge monitor. The calibration procedure drains the battery to approximately 0% of charge capacity during normal computer operation, permitting a user to operate the computer without risking power failure when the battery discharges. The computer returns to normal operation if either the AC power or the battery is removed. During the calibration procedure, the computer system prevents power management software from forcing shut down before the battery completely drains.

Find Patent Forward Citations

Fisher, Andrew. (2002). Battery calibration system for discharging a rechargeable battery and generating an ac detect signal to power management logic to maintain normal computer operation even when battery is below certain level (U.S. Patent No. 6463545). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6463545

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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