| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To shorten a delay time by a time when an unlocking operation is performed after the occurrence of a trigger in the smart entry system of a vehicle. <P>SOLUTION: When a request signal is transmitted from an antenna for transmission at a position where the trigger occurs (for example, a right side antenna 25 on the outside of a cabin), an obstruction signal stopping the receiving of the request signal at positions other than that position (inverse signal formed by inverting pulse rows in modulation relative to the request signal) is transmitted from an antenna disposed at a position other than that position (for example, a left side antenna 24 on the outside of the cabin) together with the request signal. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
