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Configurable multi-protocol vehicle communication circuit and method

  • US 6,654,351 B1
  • Filed: 03/08/2000
  • Issued: 11/25/2003
  • Est. Priority Date: 03/08/2000
  • Status: Expired due to Term
First Claim
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1. A method comprising:

  • placing a first communication terminal in a high-impedance state;

    placing a second communication terminal in a high-impedance state;

    sensing a first voltage at the first communication terminal while in the high-impedance state;

    sensing a second voltage at the second communication terminal while in the high-impedance state;

    determining a communication mode based on the first voltage and the second voltage; and

    communicating in the communication mode using the first communication terminal and the second communication terminal.

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