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:
Mar. 31, 2015
Filed:
Jun. 09, 2011
Timothy J. Knowlton, Benson, AZ (US);
Timothy J. Knowlton, Benson, AZ (US);
Standard Microsystems Corporation, Hauppague, NY (US);
Abstract
A charging method and system for rationing charge or energy supplied by a host to a portable device. The system includes a power switch connected to a current sensing module that detects instantaneous current drawn by the portable device. A current register connected to the current sensing module stores the instantaneous current value. A timing module generates timing information. A cumulative charge value obtained by multiplying the instantaneous current value with the timing information is stored in a charge register. Further, a cumulative energy value may be obtained by multiplying the cumulative charge value with a detected voltage value. A threshold database stores a threshold value, and a rationing module connected to the host and the charge register continuously compares the cumulative charge value and/or the cumulative energy value with the threshold charge value. A control signal is generated when the threshold charge value is exceeded.