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TECHNIQUES FOR APPROXIMATING A DIFFERENCE BETWEEN TWO CAPACITANCES

  • US 20120024064A1
  • Filed: 07/29/2010
  • Published: 02/02/2012
  • Est. Priority Date: 07/29/2010
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a capacitance adjustment module configured to connect one or more of N capacitors in parallel with one of a first and second capacitance; and

    a control module that identifies the smaller of the first and second capacitances, that identifies the larger of the first and second capacitances, and that subsequently, during each of M iterations;

    instructs the capacitance adjustment module to connect at least one of the N capacitors across a set of nodes in parallel with the smaller identified capacitance; and

    determines whether the capacitance associated with the set of nodes is greater than the larger identified capacitance,wherein, after the M iterations, the control module approximates the difference between the first and second capacitances based on which of the N capacitors are connected across the set of nodes, where M and N are integers greater than or equal to 1.

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