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SECURITY ACCESS SYSTEM, APPARATUS, AND METHOD

  • US 20090115585A1
  • Filed: 11/06/2007
  • Published: 05/07/2009
  • Est. Priority Date: 11/06/2007
  • Status: Abandoned Application
First Claim
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1. A vehicle access security system, comprising:

  • a) a transmitter element, adapted to transmit a modulated vehicle access signal into a predetermined communications channel, the predetermined communications channel selected from a group consisting of;

    i) an acoustic communications channel, or;

    ii) an optical communications channel;

    b) a detector element, adapted to detect the modulated vehicle access signal in the predetermined communications channel transmitted by the transmitter element, the detector element having a detector output signal;

    c) a receiver element, adapted to receive the detector output signal of the detector element, the receiver element further adapted to perform at least one signal processing function, the receiver element having a receiver output signal, wherein the at least one signal processing function is selected from the group consisting of;

    i) amplifying an amplitude of the detector output signal;

    ii) downconverting the detector output signal;

    iii) demodulating the detector output signal, or;

    iv) correcting phase distortions in the detector output signal, and;

    d) a computational element, adapted to accept the receiver output signal, the computational element further adapted to compare the receiver output signal with a predetermined access code, wherein the predetermined access code is stored in a memory element accessible by the computational element, whereby the computational element further calculates an output value of the computational element reflective of a comparative result of the receiver output signal with the predetermined access code.

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