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Code signal generator, in particular for an anti-theft protection system of a motor vehicle

  • US 6,329,909 B1
  • Filed: 08/09/1999
  • Issued: 12/11/2001
  • Est. Priority Date: 02/07/1997
  • Status: Expired due to Term
First Claim
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1. A code signal generator for triggering a security unit, comprising:

  • a transponder unit adapted to receive a question code signal from a stationary transmitting and receiving unit, to generate, in response, a response code signal based on the question code signal, and to transmit the response code signal to the transmitting and receiving unit for authentication, whereby a security unit is enabled upon a successful authentication;

    a transmitting unit independent of said transponder unit, said transmitting unit having a switching element, and being adapted to wirelessly transmit a control signal to the stationary transmitting and receiving unit upon actuation by said switching element; and

    a single signal generating unit connected to said transmitting unit and to said transponder unit for generating the control signal and the response code signal.

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