| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vehicular keyless device for surely preventing confinement of a key in a car. <P>SOLUTION: This vehicular keyless device is composed of an on-vehicle machine 3 having an LF transmission part 32 for transmitting a search radio wave of a portable machine 2 in a cabin, indoor antenna output parts 41 to 43, indoor antennas 48 to 50, an RF receiving part 33 for receiving a response radio wave from the inside of the cabin and a response radio wave from the outside of the car to the search radio wave, a receiving antenna 44, outdoor antenna output parts 38 to 40 for transmitting the search radio wave of the portable machine 2 to the outside of the car, outdoor antennas 45 to 47 and a control part 31 for outputting a lock signal when an ID code cannot be received from the portable machine 2 after receiving the ID code transmitted from the portable machine 2 by the RF receiving part 33 and the receiving antenna 44, and the portable machine 2 having an LF receiving part 24 for receiving the search radio wave and an RF transmission part 22 for transmitting the ID code for indicating the fact of being a pair with a vehicle when receiving the search radio wave. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
