The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2015
Filed:
Nov. 08, 2006
M. Benton Free, Saint Paul, MN (US);
Bernard O. Geaghan, Salem, NH (US);
Karl P. Hauck, Pembroke, NH (US);
Billy Lee Weaver, Eagan, MN (US);
M. Benton Free, Saint Paul, MN (US);
Bernard O. Geaghan, Salem, NH (US);
Karl P. Hauck, Pembroke, NH (US);
Billy Lee Weaver, Eagan, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Methods and devices for determining the location of a touch implement relative to a touch locating sensing device involve developing touch signals at a touch sensor in response to a touch implement on or near the touch surface. Data associated with the touch signals is fitted to a predefined curve. The predefined curve is preferably defined by a charged sphere near a conducting plane, the charged sphere representative of an end of the touch implement and the conducting plane representative of the touch surface. A location of the touch implement is determined relative to the touch surface using the predefined curve to which the data is fitted.