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:
Feb. 09, 2016
Filed:
Feb. 13, 2012
Chio Fai Aglaia Kong, San Jose, CA (US);
Guangmin He, Shanghai, CN;
Paul Chang, San Jose, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A charging circuit and method for charging a power storage device in a power over Ethernet environment are necessary to prevent unnecessary power consumption. Power sourcing equipment continuously supplies power to a connected device after determining that the device is compatible. In order to prevent supply of power after a power storage device attains full charge, a charging circuit may include an interface for supplying electric power; a sensing circuit including a switch in series with a resistor; and a voltage detection circuit. The voltage detection circuit may communicate with the sensing circuit and may output a first signal that turns the switch OFF when the voltage of the power storage device is greater than or equal to a first voltage and may output a second signal that turns the switch ON when the voltage of the power storage device is less than or equal to a second voltage.