Generation of graphical feedback in a computer system

Abstract

The present invention relates to control of a computer system, which includes a data processing unit, a display and an eye tracker adapted to register a user's gaze point with respect to the display. The data processing unit is adapted to present graphical information on the display, which includes feedback data reflecting the user's commands entered into the unit. The data processing unit is adapted to present the feedback data such that during an initial phase, the feedback data is generated based on an absolute position of the gaze point. An imaging device of the system is also adapted to register image data representing movements of a body part of the user and to forward a representation of the image data to the data processing unit. Hence, during a phase subsequent to the initial phase, the data is instead generated based on the image data.

What is claimed is: 
     
         1 . A method for operating a computer system, the method comprising:
 causing a screen of a display device to display a first image;   receiving image data from a first image sensor;   determining, based on the image date from the first image sensor, that a gaze of a user is directed away from the screen;   receiving an activation input from the user; and   causing, based on the gaze of the user being directed away from the screen and receipt of the activation input, the screen to display a second image, wherein the second image is different than the first image