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Telecontrol system with a plurality of functional ranges selected by detection threshold

  • US 5,600,323 A
  • Filed: 06/16/1994
  • Issued: 02/04/1997
  • Est. Priority Date: 06/21/1993
  • Status: Expired due to Term
First Claim
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1. A telecontrol system for remote execution of functions for actuating devices in a motor vehicle, comprising a portable emitter for generating a message that is at least partially encoded and a receiver module located in the vehicle, the emitter having a first processor, an emitter connected to the processor for receiving signals therefrom, a group of touch keys for activating the first processor to provide input signals thereto, and a power supply source for the processor and emitter, the receiver module having a receiving circuit for receiving the message generated by the emitter and for decoding the at least partially coded message to give demodulated output signals, a data signal configuring circuit connected to the output of the receiving circuit, a detection threshold switching circuit in said data signal configuring circuit for selecting the detection threshold, said detection threshold corresponding to one of a plurality of predetermined zones of distance from the vehicle, a second processor connected to the output of the data signal configuring circuit for processing the data signal received therefrom, and an actuating circuit for actuating electromagnetic devices of the vehicle to execute functions that each correspond to a respective individual zone, the actuating circuit being connected to the second processor to receive command signals from the second processor, wherein the second processor includes control means for controlling within the receiver module a detection threshold of the data signal configuring circuit to define within the receiver module one of the plurality of zones of functional range around the vehicle.

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