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Method for initializing an anti-theft system for a motor vehicle

  • US 6,211,776 B1
  • Filed: 03/05/1999
  • Issued: 04/03/2001
  • Est. Priority Date: 03/05/1998
  • Status: Expired due to Fees
First Claim
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1. A method for initializing an anti-theft system, which comprises:

  • a) setting an initial transmit condition;

    b) emitting an interrogation signal via a transceiver unit disposed in a motor vehicle and electrically connected to at least one antenna disposed on the motor vehicle;

    c) receiving the interrogation signal in a portable response transmitter located at a previously defined fixed position and emitting a response signal in response to the interrogation signal;

    d) receiving, evaluating, and comparing the response signal in a control unit of the transceiver unit with setpoint values;

    e) changing the initial transmit condition according to a predefined algorithm in dependence on the response signal received; and

    f) repeating steps b)-e) until the portable response transmitter just still receives the interrogation signal or just fails to receive the interrogation signal any more.

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