Vehicular remote locking/unlocking system

Communications: electrical – Selective – Intelligence comparison for controlling

Reexamination Certificate

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Details

C340S005610, C340S426160

Reexamination Certificate

active

06980082

ABSTRACT:
In a vehicular remote locking/unlocking system, when a locking or unlocking switch outputs a trigger signal, a second transmission device transmits identification information transmission disable signal, before a first transmission device transmits identification information request signal. When a portable device of the vehicular remote system receives the transmission disable signal, even if the portable device receives a subsequent request signal, transmission of identification information from the portable device is disabled for a predetermined period of time, thereby disabling operation of a door lock actuator. Since the second transmission device transmits a transmission disable signal a plurality of times in succession, the influence of noise is eliminated, thereby reliably preventing the portable transceiver within the vehicle from outputting an ID signal.

REFERENCES:
patent: 5134392 (1992-07-01), Takeuchi et al.
patent: 5499022 (1996-03-01), Boschini
patent: 5969597 (1999-10-01), Weigl et al.
patent: 6218932 (2001-04-01), Stippler
patent: 6744349 (2004-06-01), Asakura et al.
patent: 6765471 (2004-07-01), Baudard et al.
patent: 0 523 602 (1992-07-01), None
patent: 0 523 602 (1993-01-01), None
patent: 1 041 226 (2000-10-01), None
patent: 2 814 188 (2002-03-01), None

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