| 摘要 |
PROBLEM TO BE SOLVED: To increase the number of power superimposed multiplex communication apparatuses for a vehicle connectable to a power superimposed multiplex communication system and to stabilize communication without increasing a transmission output of the power superimposed multiplex communication apparatus. SOLUTION: The communication system is constituted in such a manner that an arithmetic section 21 of a slave turns on a switch section 20 at random to receive a communication signal and take synchronization in a synchronization step in which a master and slaves are synchronized with each other, the arithmetic section 21 turns on the switch section 20 only in a communication timing assigned to its own slave to connect its own slave to a power supply line 101, an arithmetic section 10 of the master transmits a command signal more than once within a period of one frame, and transmits a command signal corresponding to different slaves in respective transmission states. COPYRIGHT: (C)2004,JPO&NCIPI
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