×

Sensing phase sequence to suppress single tone noise

  • US 8,564,311 B2
  • Filed: 07/01/2010
  • Issued: 10/22/2013
  • Est. Priority Date: 07/01/2010
  • Status: Expired due to Fees
First Claim
Patent Images

1. A single tone noise suppression method for a capacitance-to-voltage converter in a capacitance measurement system, comprising:

  • performing three or more successive capacitive measurements on a capacitance under test to produce respective single tone noise responses, each successive measurement using a different sequence of sensing signals;

    disregarding the capacitance measurement with the highest single tone noise response; and

    averaging the remaining measurements to obtain a capacitance measurement with reduced single tone noise levels.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×