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:
Jul. 17, 2012
Filed:
Mar. 31, 2010
Peter Blixt, Hagersten, SE;
Anders Hoglund, Balsta, SE;
Bengt Rehnstrom, Vasterhaninge, SE;
John Elvesjö, Stockholm, SE;
Peter Blixt, Hagersten, SE;
Anders Hoglund, Balsta, SE;
Bengt Rehnstrom, Vasterhaninge, SE;
John Elvesjö, Stockholm, SE;
Tobii Technology AB, Danderyd, SE;
Abstract
A visual display characterized by hidden reference illuminators is adapted to emit invisible light for generating corneo-scleral reflections on an eye watching a screen surface of the display. The tracking of such reflections and the pupil center provides input for gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. A system and method for determining a gaze point of an eye watching a visual display comprising reference illuminators are further provided. The determination of the gaze point may be based on an ellipsoidal cornea model.