Methods for determining a cursor position from a finger contact with a touch screen display

  • US 7,843,427 B2
  • Filed: 09/04/2007
  • Issued: 11/30/2010
  • Est. Priority Date: 09/06/2006
  • Status: Active Grant
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First Claim
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1. A computer-implemented method, comprising:

  • at a portable electronic device with a touch screen display with a plurality of user interface objects,detecting a contact area of a finger with the touch screen display, wherein the contact area has a shape and a centroid;

    determining a first position that corresponds to the centroid of the contact area;

    determining a second position that is offset from the first position based on the shape of the contact area; and

    determining a cursor position point, at least in part, based on;

    the second position,one or more distances between the second position and one or more of the user interface objects, andone or more activation susceptibility numbers, each associated with a respective user interface object in the plurality of user interface objects.

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