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Apparatus and method of calibrating a keyless transmitter

  • US 6,864,800 B2
  • Filed: 09/28/2001
  • Issued: 03/08/2005
  • Est. Priority Date: 09/28/2001
  • Status: Expired due to Fees
First Claim
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1. A crystal-less remote keyless entry system, comprising:

  • a microprocessor;

    a radio frequency circuit electrically coupled to the microprocessor;

    a timing circuit electrically coupled to the microprocessor, the timing circuit being a unitary part of the microprocessor; and

    a memory electrically coupled to the microprocessor, the memory being programmed with a compensation that adjusts an output frequency of the timing circuit such that the output frequency of the timing circuit does not coincide with a frequency discontinuity that occurs within an output of the timing circuit.

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