Patent ID: 8680712
Filing Date: 2014-03-25
Classification: G06F,H02J,H04L,H04N

Abstract:
1. A power delivery circuit configured to deliver power to one or more of a plurality of devices connected in a network, the power delivery circuit comprising: a voltage source configured to generate a voltage; a power relay switch configured to relay, when closed, the voltage generated by the voltage source to one or more of the connected devices; a signature resistor connected to the switch and configured to detect a power source from one or more of the connected devices; and a load detector connected to the switch and configured to read a load current flowing therethrough so as to detect a load in one of the connected devices, and to extract information about the connected device based on the load current; wherein the information extracted by the load detector comprises information regarding whether the connected device is powered on or powered off, and whether or not the connected device needs a supply of power.