| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyless entry device which can reliably perform transmission and reception of signals according to a condition in communication. <P>SOLUTION: A portable machine 1 includes an operation unit 11 for performing transmission instruction of portable machine transmission signals and a noise measurement unit 19 for measuring the noise level of frequency band used in transmission of vehicle side transmission signals when operation of the operation unit 11 is performed, and a vehicle side device 2 includes a vehicle side control unit for acquiring information on the noise level measured by the noise measurement unit 19 from portable machine transmission signals and for performing transmission control of vehicle side transmission signals based on the acquired information on the noise level. <P>COPYRIGHT: (C)2012,JPO&INPIT |
