| 主权项 |
1. A keyless entry system for controlling on-vehicle equipment mounted in a vehicle via a wakeup signal and a command signal, the keyless entry system comprising:
an on-vehicle unit mounted in the vehicle; and a mobile device configured to perform radio communication with the on-vehicle unit, wherein the on-vehicle unit is configured to radio-transmit a first transmission signal including the wakeup signal and a second transmission signal associated with detection of an interference with the first transmission signal, the first transmission signal having a first frequency and the second transmission signal having a second frequency different from the first frequency, and wherein the mobile device is configured to receive the first and second transmission signals from the on-vehicle device, the mobile device radio-transmitting a third transmission signal including the command signal to the on-vehicle unit when the first transmission signal has been normally received, and wherein when the first transmission signal has not been normally received, the mobile device performs a detection of an interference wave to the first transmission signal in response to receiving the second transmission signal, and radio-transmits a fourth transmission signal for requesting the on-vehicle unit to retransmit the first transmission signal to the on-vehicle unit. |
