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SYSTEMS AND METHODS FOR COMPENSATING FOR VARIATIONS OF THE OUTPUT OF A REAL-TIME CLOCK

  • US 20090160569A1
  • Filed: 12/19/2008
  • Published: 06/25/2009
  • Est. Priority Date: 12/20/2007
  • Status: Active Grant
First Claim
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1. A method for correcting offset of a real-time clock, comprising:

  • determining a frequency of an output of an oscillator, the frequency being represented as an integer (i) portion and a non-integer (ni) portion; and

    counting a first number (a) of “

    i”

    oscillations and counting a second number (b) of “

    i+x”

    oscillations by dithering between “

    i” and



    i+x”

    oscillations;

    wherein an average of the first number (a) of “

    i”

    oscillations and the second number (b) of “

    i+x”

    oscillations is an effective number of oscillations that is approximately the same as the determined frequency.

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