| 摘要 |
PROBLEM TO BE SOLVED: To share the same data by a plurality of terminals with high reliability. SOLUTION: A token is successively circulated in order of a node 1, a node 2, a node 3, a node 4, the node 1, ... with the nodes 1, 2, 3, 4 networked. The node 2 updates "data A", when it receives the token from the node 1 and holds the same. The other nodes not holding the token cannot update the "data A". When the node 2 updates the "data A", the updated "data A" are transmitted to nodes described on the recipient management information of the token as "data A" holding node. Then the node 1 transmits the token to the node 3 as the next circulated object in accordance with a circulating route in the recipient management information. COPYRIGHT: (C)2006,JPO&NCIPI
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