System and method for pre-detection in a power over ethernet...

Details System and method for pre-detection in a power over ethernet... System and method for pre-detection in a power over ethernet...

2008-06-02

2010-12-21

Deberadinis, Robert L. (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Connecting or disconnecting

C709S220000

Reexamination Certificate

active

07855474

ABSTRACT:
A system and method for pre-detection in a power over Ethernet (PoE) system. A power sourcing equipment (PSE) is designed to measure a port voltage upon application of a small current source. A microcontroller controls the current source based on a comparison of the measured port voltage to a threshold voltage.

REFERENCES:
patent: 2004/0260794 (2004-12-01), Ferentz et al.
patent: 2006/0077888 (2006-04-01), Karam et al.
patent: 2007/0165548 (2007-07-01), Woo et al.
patent: 2008/0040625 (2008-02-01), Vorenkamp et al.
patent: 2009/0033345 (2009-02-01), Picard et al.

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