摘要 |
<p>A projector (1b) which can function as a node in a tree structural network, and comprises projecting means (19B), storage means (HB) 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.</p> |