| 摘要 |
A conferencing system, which can prevent useless data processing that accompanies data communication from occurring even when a presenter's device that outputs image data is switched, is provided. A projector can function as a node in a tree structural network, and comprises projecting means 19B, storage means 11B for storing parent-child information that indicates a direct parent and a direct child in the network, data control means 13aB for using projecting means 19B to project an image corresponding to image data and for sending the image data to the direct child indicated in the parent-child information when receiving the image data from the direct parent indicated in the parent-child information, and change means 13bB, when receiving a switching request for making a request to switch a parent-child relationship from the direct child, for sending the switching request to the direct parent, and when receiving permission information representing permission to switch from the direct parent, for sending the permission information to the direct child that sent the switching request and for changing the parent-child information so that the direct parent becomes the direct child, and the direct child that sent the switching request becomes the direct parent.
|
