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Vehicle engine status detection mechanism for presenting engine status to third-party automotive accessories

  • US 20040178896A1
  • Filed: 02/28/2003
  • Published: 09/16/2004
  • Est. Priority Date: 02/28/2003
  • Status: Active Grant
First Claim
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1. A circuit for detecting voltage states of on and off output from a voltage generating engine, the states relating to engine running or not running comprising:

  • a first connection point connecting the circuit to a voltage output of the engine;

    a voltage comparator; and

    a digital output signal port for providing the binary output values as instruction;

    characterized in that the circuit compares voltage levels ranging above and below a configured nominal voltage level and assigns the binary values to the variable states, the values used as instruction to a device coupled to the circuit.

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