Patent ID: 9276772
Filing Date: 2016-03-01
CPC Classification: H04L

Claim Text:
1. A method of transmitting data from a first device to a second device which are connected using an audio/video (AV) interface, the method comprising: transmitting, by the first device to the second device, a third message which is a request to check whether a path is capable of transmitting a predetermined stream; in response to the third message, receiving, by the first device from the second device a fourth message comprising information about aggregated attributes of links between the first device and the second device forming the path; determining, by the first device, whether the path capable of transmitting the predetermined stream exists based on the received information about the aggregated attributes of the links; in response to the determining that the path is capable of transmitting the predetermined stream, transmitting to the second device a first request message to secure the path and resources of the path for transmitting the predetermined stream to the second device; receiving, by the first device, in response to the first message, from the second device a second response message comprising result information indicating whether the path and resources are secured; and if the path and resources are secured, transmitting by the first device, in response to the second message, the predetermined stream to the second device, wherein the fourth message comprises information regarding available bandwidths of the links between the devices forming the path, wherein the information regarding the available bandwidths of the links is added to the third message by each of intermediate nodes with the links between the intermediate nodes that form the path and each of the intermediate nodes relays the third message with added information about the available bandwidth of a link from among the links corresponding to the respective node, and wherein the third message with the added information is transmitted to the second device.