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:
Jun. 23, 2015
Filed:
Dec. 21, 2006
Applicant:
Russell J. Apfel, Austin, TX (US);
Inventor:
Russell J. Apfel, Austin, TX (US);
Assignee:
Silicon Laboratories Inc., Austin, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 15/173 (2006.01); H04L 12/10 (2006.01);
U.S. Cl.
CPC ...
H04L 12/10 (2013.01);
Abstract
In a particular embodiment, a method of producing a powered device detection signature includes rectifying a device detection input received from a powered network to produce a rectified detection input at a powered device. The method further includes applying the rectified detection input to a signature resistor and to a variable impedance circuit in parallel with the signature resistor to produce a device signature that is substantially constant over a power range associated with the device detection input.