| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a road vehicle keyless boarding system the available range of which is extended. SOLUTION: A road vehicle keyless boarding system 10 has an in-vehicle communication processor 11 and a remote transponder 15. The communication processor 11 has a radio frequency receiver 12, a low frequency transmitter- receiver 13, and a control that encrypts and reads a signal sent/received by the low frequency transmitter-receiver 13. The transponder 15 has a radio frequency transmitter 16 that sends a signal to the communication processor 11, when it receives an instruction sent by manual operation and a low frequency receiver 17 that reads en encrypted signal received from the communication processor 11 and responds thereto.</p> |
