| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve directivity of a car-mounted load remote control device by receiving a radio signal transmitted by a portable transmitter at a plural number of points of a vehicle by using a radio type car inside LAN. SOLUTION: A car inside LAN is constituted by mounting a plural number of communication nodes 2 on several positions of the car 3 respectively furnished on an antenna 21. Each of the communication nodes 2 changes receiving frequency from first receiving frequency f1 over to second receiving frequency f2 which is the same as the transmission frequency f2 of a potable transmitter 1 when an ignition switch is in an off operation state. The communication nodes 2, when they receive a radio signal transmitted by the portable transmitter 1, transfer its received content to the other communication nodes 2 and control corresponding car-mounted loads.</p> |
