Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2011-08-09
2011-08-09
Barbee, Manuel L (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C702S060000, C363S080000
Reexamination Certificate
active
07996166
ABSTRACT:
In one embodiment, a method for determining capacitive signature validity of a powered device (PD) attached to power sourcing equipment (PSE) having (i) an isolated side with a primary coil and (ii) a line side with a secondary coil connected to the PD. The method includes determining, on the isolated side, a first time T1and a corresponding first voltage V1across the PD. Then generating, on the isolated side, a switching signal used to generate an electrical current through the primary coil. Then determining, on the isolated side, a second time T2and a corresponding second voltage V2across the PD, wherein a difference between V2and V1is related to the electrical current provided to the primary coil. Then determining the capacitive-signature validity of the PD based on T1, T2, V1, V2, and a resistive signature of the PD.
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de la Torre Vega Luis
Saibi Fadi
Agere Systems Inc.
Barbee Manuel L
Meisarosh Edward J.
Mendelsohn Steve
Mendelsohn, Drucker & Associates P.C.
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