Patent ID: 9234930
Filing Date: 2016-01-12
CPC Classification: G01R,G06F

Claim Text:
1. A method comprising: discovering a connection of a source device with a sink device via an interface between the source device and the sink device, the interface comprising a control bus between the source device and the sink device; asserting a connection status signal responsive to discovering the connection; performing, by the source device, an electrical measurement of the interface between the source device and the sink device, wherein performing the electrical measurement includes sensing by the source device a presence or absence of a termination resistance of the sink device coupled to the source device via the interface, and wherein the electrical measurement is a measurement to determine the existence of the termination resistance of the sink device and includes sensing whether the termination resistance of the sink device is coupled with the control bus; if the sensing by the source device fails to detect the termination resistance of the sink device when connection status signal is asserted, determining by the source device that the connection with the sink device has been lost; responsive to determining by the source device that the connection with the sink device has been lost, disabling a connection of a termination resistance of the source device from the interface; and re-enabling the connection of the termination resistance of the source device to the interface after a time period, wherein the termination resistance of the sink device is not coupled with the control bus until a process of the sink device for discovering the connection of the source device to the sink device is completed.