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Discrete sensor inputs

  • US 8,044,787 B2
  • Filed: 10/07/2008
  • Issued: 10/25/2011
  • Est. Priority Date: 10/07/2008
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • detecting a plurality of discrete signals, each of the discrete signals being received from a respective one of a plurality of inputs;

    identifying a detected bit pattern based on the discrete signals;

    detecting selectively an error condition, and identifying the error condition as one of at least one of a short to battery condition, a short to ground condition, and a failure of a make after break feature, according to the bit pattern; and

    determining an expected position of a physical member according to the bit pattern;

    wherein the make after break feature fails if one of the inputs that was in a high asserted state fails to break to a low or non-asserted state when the physical member moves from a first detent position to a second detent position.

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