| 摘要 |
<P>PROBLEM TO BE SOLVED: To assure the transmission time of data signal at a node immediately after resetting from sleep state to active state. <P>SOLUTION: A communication timing controller for determining the transmission timing of a communication timing signal from its own node by using the reception timing of a communication timing signal from other node, and determining the time when a data signal is transmitted from its own node based on that transmission timing and the reception timing of a communication timing signal from other node is provided at each node. An operation control means controls each section to operate under any one of active state, i.e., normal operation state, sleep state, i.e., operation stop state, or semi-active state for determining the transmission starting time of a communication timing signal from its own node when transition to active state is made by stopping transmission operation from its own node and receiving a communication timing signal from other node. <P>COPYRIGHT: (C)2008,JPO&INPIT |
