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Apparatus and Method for Culling Substantially Redundant Data in Fingerprint Sensing Circuits

  • US 20100177940A1
  • Filed: 01/15/2009
  • Published: 07/15/2010
  • Est. Priority Date: 01/15/2009
  • Status: Active Grant
First Claim
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1. An apparatus for culling substantially redundant data in a fingerprint sensing circuit, the apparatus comprising:

  • an input module configured to receive a first set of data samples from an array of fingerprint sensing elements and further configured to receive a second set of data samples from the array of fingerprint sensing elements, the second set being received after the first set;

    a storage module to store each of the first and second sets of data samples;

    a comparator module to calculate a difference between each data sample from the first set and a corresponding data sample from the second set to provide a plurality of difference values; and

    a determination module to count the number of difference values that exceed a difference limit and identify the second set of data samples as redundant in the event the number is less than a count limit.

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