Patent ID: 9270922
Filing Date: 2016-02-23
CPC Classification: G09G,H04N

Claim Text:
1. A relay device adapted to be positioned in a transmission system for transmitting a video signal from a source device to a sink device, the relay device comprising: a video signal receiving unit that receives the video signal from the source device; a video signal transmitting unit that transmits the video signal to the sink device; a first communication unit that receives a first message regarding a power supply capability of the sink device; a second communication unit that transmits a second message regarding a power supply capability of the relay device to the source device; a first power circuit that receives power supplied by the sink device; and a second power circuit that supplies power to the source device; wherein an amount of sum of the power supply capability of the relay device and power consumed at the relay device does not exceed an amount of power supply capability of the sink device, and wherein an amount of power to be supplied from the second power circuit to the source device is arranged to be difference between an amount having been supplied from the sink device to the first power circuit and another amount consumed at the relay device.