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:
Aug. 14, 2012
Filed:
May. 30, 2008
Han-jung Kao, Taipei, TW;
Guoxing LI, Sunnyvale, CA (US);
Ya-tung Kao, Taipei, TW;
Wei Zhang, Shanghai, CN;
Han-Jung Kao, Taipei, TW;
Guoxing Li, Sunnyvale, CA (US);
Ya-Tung Kao, Taipei, TW;
Wei Zhang, Shanghai, CN;
O2Micro, Inc, Santa Clara, CA (US);
Abstract
A charger includes a detection pin, a voltage divider, and a comparator. The detection pin can couple the charger to a power source via a first data line. The voltage divider and the comparator are coupled to the detection pin. The voltage divider divides a power voltage provided by the power source and provides a detection voltage at the detection pin. The comparator compares the detection voltage with a predetermined reference voltage and identifies a type of the power source according to the comparing.