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. 23, 2016
Filed:
Jul. 25, 2013
Broadcom Corporation, Irvine, CA (US);
Walid Nabhane, Long Valley, NJ (US);
Mark D Rutherford, Wellington, CO (US);
Narayan Prasad Ramachandran, Bangalore, IN;
David Chang, Irvine, CA (US);
Yi Ting Chen, New Taipei, TW;
Chenmin Zhang, Irvine, CA (US);
Ajmal A. Godil, San Diego, CA (US);
BROADCOM CORPORATION, Irvine, CA (US);
Abstract
Aspects of charger detection and optimization prior to host control are described herein. In various embodiments, a condition of whether reverse current is present on a system bus is detected. When the condition for reverse current is present, reverse current is sunk by one or more of various reverse current sink circuits. By relying upon one or more of the reverse current sink circuits, for safety, to address or mitigate the condition for reverse current, a detector may be able to identify or distinguish among several different types of charger or charging ports coupled to a system bus allowing a charger to be selected optimally. Further, an indicator of the type of charger or charging port coupled to the system bus is communicated over a single pin interface, for backwards compatibility with circuits capable of identifying between only two different types of chargers.