System and method for controlling power delivered to a...

Details System and method for controlling power delivered to a... System and method for controlling power delivered to a...

2007-01-17

2010-02-16

Bae, Ji H (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

C713S340000, C709S200000

Reexamination Certificate

active

07664972

ABSTRACT:
A system and method for discovering a cable type and resistance for Power over Ethernet (PoE) applications. Cabling power loss in PoE applications is related to the resistance of the cable itself. A PHY can be designed to measure electrical characteristics (e.g., insertion loss, cross talk, length, etc.) of the Ethernet cable to enable determination of the cable resistance. The determined resistance can be used in powering decisions and in adjusting power budgets allocated to power source equipment ports.

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