| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To realize a door lock control with less erroneous operation while simplifying routing in a car. <P>SOLUTION: Radio having negative modulation signals is radiated from a first antenna 12 to an area E1, and a radio having positive modulation signals is radiated from second antennas 13a and 13b to areas E2 and E3. The first antenna 12 and the second antennas 13a and 13b are disposed so that the overlapped areas of the areas E1, E2, and E3 (areas in which the positive modulation signals and the negative modulation signals are roughly cancel modulation components each other) roughly match a boundary area partitioning the inside and outside of a vehicle 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
