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:
Sep. 08, 1998
Filed:
Aug. 16, 1996
Randal A Leeson, Stow, OH (US);
Richard Shoobridge, Akron, OH (US);
Telxon Corporation, Akron, OH (US);
Abstract
A low voltage battery pack monitoring circuit for a battery powered electronic device is disclosed. The circuit utilizes low battery and power failure set point voltages and first and second comparison circuits to compare voltage across the device battery pack to the set point voltages. If the battery pack output voltage falls below the low battery pack set point voltages, the first comparison circuit sends a signal to a microprocessor causing a low battery indicator light to be actuated. If the battery pack output voltage continues to decrease below the power failure set point voltage, the second comparison circuit includes a comparator which changes output state and turns off selected electronic systems of the device and the device enters a suspend mode. The low battery pack set point voltage value and the power failure set point voltage value are determined using an empirical look up table.