Patent ID: 9529411
Filing Date: 2016-12-27
CPC Classification: G06F,Y02D

Claim Text:
1. A method of operating a USB power-delivery source device comprising: communicating with a second USB power-delivery device, said communicating including receiving messages from the second USB power-delivery device; and if no response is received from the second USB power-delivery device for a predetermined duration, sending one or more source capabilities messages by the USB source power-delivery device; wherein, after sending a predetermined number of source capabilities messages, if no response is received from the second USB power-delivery device, sending by the USB power-delivery source device at least one reset message; and wherein, after sending a predetermined number of reset messages, if no response is received from the second USB power-delivery device, entering a device sleep mode by the USB power-delivery source device, wherein signal-receiving functionality of the USB power-delivery source device is turned off.