Keyless entry device with passive and active entry modes

Details Keyless entry device with passive and active entry modes Keyless entry device with passive and active entry modes

2005-07-01

2010-02-02

Zimmerman, Brian A (Department: 2612)

Communications: electrical

Selective

Intelligence comparison for controlling

C340S005610, C340S426360

Reexamination Certificate

active

07656270

ABSTRACT:
A device includes a car-mounted transmitter-receiver and a portable transmitter-receiver. The car-mounted transmitter-receiver includes a first memory that stores the ID of the portable transmitter-receiver and a second memory that stores the ID of the car-mounted transmitter-receiver. The portable transmitter-receiver includes a first memory that stores the ID of the car-mounted transmitter-receiver and a second memory that stores the ID of the portable transmitter-receiver. The transmission and reception of radio signals between the car-mounted transmitter-receiver and the portable transmitter-receiver are made in one of an active entry mode and a passive entry mode, in whichever entry mode the transmitted signal contains the ID of the car-mounted transmitter-receiver and the ID of the portable transmitter-receiver, and in the active entry mode, the signal transmitted by the portable transmitter-receiver further contains an instruction signal that controls a device being controlled disposed in the car.

REFERENCES:
patent: 5594429 (1997-01-01), Nakahara
patent: 5841363 (1998-11-01), Jakob et al.
patent: 6317035 (2001-11-01), Berberich et al.
patent: 6617961 (2003-09-01), Janssen et al.
patent: 2000-192701 (2000-07-01), None
patent: 2000192701 (2000-07-01), None
patent: WO 99/23335 (1999-05-01), None

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