| 摘要 |
<P>PROBLEM TO BE SOLVED: To fully secure security and convenience in an actual use scene in a smart entry system of a vehicle for automatically unlocking a door after collation and confirmation through communication between a body unit on the vehicle side and a portable unit carried by a user when the user's hand approaches a door handle. <P>SOLUTION: A radio type sensor (e.g. a sensor using an impulse radar) is used as a sensor for detecting the approach of the user's hand, and a security function as follows, for instance, is provided, that is, the body unit 20 is provided with a function of carrying out control for locking the door in the unlocked state while putting the portable unit in an automatic unlocking disabled invalid state in the case that the non-operated state of an electrical device of the vehicle continues for a specified time or longer and the transmission and reception of signals to the portable unit 10 has been possible for a specified time or longer or specified times or more. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
