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:
Sep. 27, 2016
Filed:
Jul. 18, 2011
Tommi Ilmonen, Espoo, FI;
Tommi Ilmonen, Espoo, FI;
MULTYTOUCH OY, Helsinki, FI;
Abstract
A touch display has a touch screen to display images and one or more infrared cameras to take images of objects contacting the touch screen. One or more calibration patterns are formed on the touch screen. In response, an automatic process takes place, with: producing an image of the touch screen by taking with each one of the group of infrared cameras a set of one or more images of the calibration patterns; determining geometric distortions of the images with relation to the formed one or more calibration patterns; and calculating calibration parameters configured to enable computational compensation of the determined geometric distortions. The calibration parameters are then stored.