Patent · US Active

Visual display with illuminators for gaze tracking

US9194952B2 · kind B2 · utility

1Cited by

5References

13Claims

0Family size

Assignee

Tobii AB · SE

Inventors

Peter Blixt · Danderyd, SE
Bengt Rehnstrom · Västerhaninge, SE
Anders Kingbäck · Danderyd, SE
John Elvesjö · Stockholm, SE
Mattias Kuldkepp · Sollentuna, SE

Key dates

Filing date	Dec 30, 2014
Grant date	Nov 24, 2015
Priority date	—
Expiry date	Dec 30, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG06V40/19
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A visual display includes hidden reference illuminators 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 to gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. Also provides are a system and method for determining a gaze point of an eye watching a visual display that includes reference illuminators. The determination of the gaze point may be based on an ellipsoidal cornea model.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.