Portable transceiver for keyless vehicle entry system having pha

Details Portable transceiver for keyless vehicle entry system having pha Portable transceiver for keyless vehicle entry system having pha

1996-02-02

1998-12-01

Hofsass, Jeffery

Coded data generation or conversion

Code generator or transmitter

Transmitter for remote control signal

34082554, 34082569, 34082572, G08C 1912

Patent

active

058445170

ABSTRACT:
A keyless entry system is presented for controlling a vehicle device function, such as the locking-unlocking functions of a vehicle door lock. The system includes a vehicle transceiver adapted to be mounted on a vehicle for transmitting an interrogation signal and also for receiving a coded reply signal and responding thereto for causing performance of a vehicle device function. The system also includes a plurality of portable remote transceivers, each of which receives an interrogation signal and responds thereto by transmitting a coded reply signal. The coded reply signals from different portable transceivers have different phase delays.

REFERENCES:
patent: 4495496 (1985-01-01), Miller
patent: 4763121 (1988-08-01), Tomoda et al.
patent: 5319364 (1994-06-01), Waraksa
patent: 5508687 (1996-04-01), Gebhardt

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