Power feed circuitry within a power over Ethernet (PoE) device detects fault conditions within power and data distribution lines coupled to the power feed circuitry. This circuitry includes network interface circuitry coupled to the network in order to exchange both data and power signals. The power...http://www.google.de/patents/US20070260904?utm_source=gb-gplus-sharePatent US20070260904 - System and method to detect power distribution fault conditions and distribute power to a network attached power device
