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. 29, 2016
Filed:
Mar. 15, 2013
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventors:
Thomas J O'Brien, Powell, OH (US);
Christian G Sporck, Campbell, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 7/06 (2006.01); H03M 13/11 (2006.01); H04B 7/04 (2006.01); H04L 1/00 (2006.01);
U.S. Cl.
CPC ...
H03M 13/1102 (2013.01); H04B 7/0413 (2013.01); H04L 1/0041 (2013.01);
Abstract
A charging circuit using a switch mode power supply to charge a battery from a connected external power adapter may periodically turn off the switch mode power supply and disconnect its input terminal from the switch mode power supply. A load may be connected to the input terminal. The input terminal is monitored for voltage collapse, indicating whether or not the power adapter is connected.