| 摘要 |
A synchronisation signal from a master node is used to control video stream transmissions between sending nodes 102, 108, 111 and receiving nodes 103, 112. The synchronisation signal comprises first synchronisation elements that have a frequency greater than the highest image frequency of the video stream transmitted by the sending nodes and second synchronisation elements that are used to enable the sending nodes to maintain synchronisation with the master node. Methods are disclosed that a) permit image data to be transmitted to receiving nodes according to the first synchronising elements, b) control synchronisation between sending nodes by using the first synchronisation elements to synchronise image data transmission and c) control video stream transmission by transmitting image data of the video stream from a sending node to a receiving node using the first synchronisation elements and maintaining synchronisation between the sending nodes and master nodes using the second synchronising elements. The method is designed to provide a gapless display transition between video streams of the sending nodes when the receiving node switches from one display to another. |
