Smart entry system

Details Smart entry system Smart entry system

2005-05-10

2009-11-03

Holloway, III, Edwin C (Department: 2612)

Communications: electrical

Selective

Intelligence comparison for controlling

C340S005610, C340S005630, C340S005720

Reexamination Certificate

active

07612649

ABSTRACT:
A smart entry system for a vehicle includes a transmitter on a vehicle and a portable unit carried by a user. The transmitter transmits a request signal which defines a user detection area to detect whether the portable unit transmits a response signal to indicate the user. When the user enters the detection area while all the doors are locked, an unlock standby state is set. When the user touches a touch sensor of a driver-seat side door under the unlock standby state, only the driver-seat side door is first unlocked. The other doors are kept locked if the user opens the D-door by the time when T2seconds elapse. On the other hand, all the doors are unlocked when T2elapses while the driver-seat side door is not opened.

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