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:
Nov. 22, 2016
Filed:
Oct. 23, 2014
Applicant:
Huawei Technologies Co., Ltd., Shenzhen, CN;
Inventors:
Zheng Ma, Shenzhen, CN;
Zhiji Deng, Shenzhen, CN;
Assignee:
Huawei Technologies Co., Ltd., Shenzhen, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/26 (2006.01); H04L 12/10 (2006.01); G01R 31/40 (2014.01); H04L 12/413 (2006.01); H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
G06F 1/26 (2013.01); G01R 31/40 (2013.01); H02J 7/0004 (2013.01); H04L 12/10 (2013.01); H04L 12/413 (2013.01);
Abstract
An electronic detection circuit for detecting a power level provided by a power sourcing device to a powered device in a Power over Ethernet (POE) system, the electronic detection circuit comprising a power input end, a power output end, a charge retention module configured to generate a control voltage from the input voltage, a load module configured to draw power at a test power level from the power sourcing device, a connection switch, and an overload detection module connected to receive the input voltage to detect whether the input voltage has dropped to zero during the test period.