| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a data transfer system and a data transfer method for allow only one device to always have a bus-use right in a data transfer system where a root node mediates a transmission right.SOLUTION: When data transfer requests are issued from a plurality of nodes to a root node and requested data transfer paths do not overlap each other, the root node outputs a root representation permission signal to subordinate nodes. The node with the root representation permission signal inputted thereto becomes a root representation node temporarily having a root right and mediates a transmission right. The root node temporarily disconnects connection between the nodes to prevent the root node and the root representation node from existing on the same bus at the same time.</p> |
