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:
Apr. 02, 2013
Filed:
Apr. 16, 2010
Applicants:
John Christopher Gammel, Austin, TX (US);
Endre Kovaks, Budapest, HU;
Inventors:
John Christopher Gammel, Austin, TX (US);
Endre Kovaks, Budapest, HU;
Assignee:
Silicon Laboratories Inc., Austin, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/00 (2006.01); G06F 15/177 (2006.01); H04B 1/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an embodiment, a power source equipment (PSE) device includes a network port configurable to couple to a network cable and a detection circuit coupled to the network port. The detection circuit is configured to apply a powered device (PD) detection voltage signal including first and second voltages to the network port and to sample a line current of the network port in response to the first and second voltages to detect a complex impedance indicating that a legacy PD is coupled to the network port.