| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily realize detection of a failure generating point when a failure is generated in a part of a system in a radio transmission system. <P>SOLUTION: By ad hoc network configuration, each video display device at a transfer destination stores a transmission path in a normal time, when the failure is generated in a part of the transmission path, each video display device detects that a change is generated in the transmission path, autonomously judges the failed part and each video display device is provided with a function for starting predetermined correspondence processing. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
