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USE OF FINGERPRINT SCANNING SENSOR DATA TO DETECT FINGER ROLL AND PITCH ANGLES

  • US 20110285648A1
  • Filed: 01/19/2011
  • Published: 11/24/2011
  • Est. Priority Date: 01/22/2010
  • Status: Abandoned Application
First Claim
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1. A method for detecting finger roll angle information from measurement data produced by a fingerprint scanning sensor, the roll angle defined with respect to a reference position of the finger in contact with the fingerprint sensor, the method comprising:

  • receiving measurement data from a fingerprint scanning sensor having a touch surface and creating spatial measurement data responsive to a finger contacting the touch surface with a measurable contact area;

    processing the spatial measurement data with an algorithm producing at least two statistical quantities derived from the spatial measurement data;

    performing calculations on the at least two statistical quantities to obtain at least one calculated quantity responsive to the roll angle of the finger with respect to a reference position of the finger; and

    providing output information responsive to the at least one calculated quantity,wherein the output information is responsive to the roll angle of the finger.

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