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, 2009
Filed:
Aug. 01, 2007
Jean Picard, Hooksett, NH (US);
Lin Wang, Merrimack, NH (US);
Wilburn M. Miller, Wilton, NH (US);
Robert A. Neidorff, Bedford, NH (US);
Guillermo J. Serrano, Coto Laurel, PR (US);
Jean Picard, Hooksett, NH (US);
Lin Wang, Merrimack, NH (US);
Wilburn M. Miller, Wilton, NH (US);
Robert A. Neidorff, Bedford, NH (US);
Guillermo J. Serrano, Coto Laurel, PR (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Apparatus within power sourcing equipment and a method for determining whether a load within a powered device coupled to the power sourcing equipment via a cable is within an acceptable resistance range. If the load is within the acceptable resistance range, a voltage source is coupled to the load. In one embodiment one recharge interval is employed during which a capacitor is charged based, at least in part, on the voltage drop across the load and one discharge interval is employed during which a capacitor is discharged based, at least in part, on the voltage drop across the load. In a second embodiment, first and second recharge and discharge intervals are employed and prior to initiation of the recharge and discharge intervals, settling time periods are provided.