Relay circuitry and switching circuitry for...

Details Relay circuitry and switching circuitry for... Relay circuitry and switching circuitry for...

2005-01-04

2009-06-09

Paladini, Albert W (Department: 2836)

Electrical transmission or interconnection systems

Switching systems

Condition responsive

C307S112000, C307S126000, C307S139000

Reexamination Certificate

active

07545057

ABSTRACT:
Relay circuitry for a power-over-network device is provided. The relay circuitry allows power-supplying network devices to identify and subsequently to supply power across a network connection to the power-over-network device, thereby eliminating the need for external power sources. The relay circuitry is operative using only the signals transmitted along a data line across the network connection. The relay circuitry is integrated together with switching circuitry on-chip on the power-over-network device. The relay circuitry and switching circuitry are further designed to propagate both the test signals and the subsequent data signals prior to and after the turning on of the power-over-network device, respectively, with minimal signal degradation.

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