| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic key system that avoids a null.SOLUTION: An electronic key system conducts a two-way wireless communication between a vehicle 1 and an electronic key, and the vehicle 1 is actuated only after a key matching through the communication. Antenna units 21 to 26 are mounted on the vehicle 1, among which the antenna unit 25 transmits a Wake signal that starts the key matching. A transmission area 25a is an area where the Wake signal is effective. Unlike a configuration that simultaneously transmits the Wake signal from a plurality of antennas, the Wake signals do not interfere with each other. Thus, a null may be avoided.SELECTED DRAWING: Figure 3 |
