Patent ID: 8648501
Filing Date: 2014-02-11
Classification: H02J,H04M

Abstract:
1. An electronic device comprising: a port, the port comprising a first contact and a second contact; a processor coupled to the first contact, wherein the processor analyzes the first contact to determine when a cable having a circuit is connected at the port; a power control circuit coupled to the second contact, the power control circuit to receive a disconnect signal from the processor; a non-power providing cable receive circuit (“Headset Rx”) coupled to the second contact, wherein the processor instructs the Headset Rx to attempt to authenticate the cable circuit, and the Headset Rx authenticates the cable circuit when the cable circuit is a non-power providing cable transmit circuit; and a power-providing cable receive circuit (“Power Rx”) coupled between the power control circuit and the processor, wherein the processor instructs the Power Rx to attempt to authenticate the cable circuit, and the Power Rx authenticates the cable circuit when the cable circuit is a power providing cable transmit circuit; wherein when the power control circuit receives a disconnect signal from the processor, the power control circuit disconnects the Power Rx from the second contact, otherwise the Power Rx is coupled to the second contact through the power control circuit.