Keyless entry system using communication via human body

Details Keyless entry system using communication via human body Keyless entry system using communication via human body

2007-08-02

2011-10-25

Lee, Benjamin C (Department: 2612)

Communications: electrical

Selective

Intelligence comparison for controlling

C340S426160, C340S426170

Reexamination Certificate

active

08044768

ABSTRACT:
A keyless entry system includes a vehicle-side device and a portable device including a portable device electrode. The vehicle-side device includes a vehicle-side controller and a vehicle-side electrode that is disposed in a position where communication with the portable device is performed via a human body when a person is getting off a vehicle. When the person carrying the portable device is getting off the vehicle, an electric field is induced by the portable device electrode in the human body. The vehicle-side controller performs authentication of the portable device upon detection of the electric field by the vehicle-side electrode. The vehicle-side controller determines the portable device has been left in the vehicle if the vehicle-side controller has no history of authentication or cannot perform authentication upon detection of the person's action of getting off the vehicle. A predetermined operation is performed based on this determination.

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