| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a remote key less entry having a signal receiver for receiving high frequency carrier signals always in good condition, irrespective of the mounting position of a mobile transceiver. SOLUTION: The entry is composed of a mobile transceiver and one or more portable transceivers to transmit/receive control signals therebetween. A signal receiver 20 of the mobile transceiver comprises a matching circuit 1 for adjusting the signal level according to an applied adjusting voltage, signal regenerators 2-9 for regenerating the control signals from received signals, a controller 11 for forming the adjusting voltage and a memory 12. For storing an ID code transmitted from the portable transceiver in the memory 12, the controller 11 forms an optimum adjusting voltage for reception and stores the voltage together with the ID code in the memory 12, when the mobile transceiver receives the header of the ID code. For transmitting the control signal to/from the portable transceiver thereafter, the controller 11 feeds an optimum adjusting voltage stored in the memory 12 to the matching circuit 1.</p> |
