Patent ID: 8976110
Filing Date: 2015-03-10
Classification: G02B,G06F,G06K,G09G,H04N

Abstract:
1. A personal computer system comprising: a visual display; an imaging device, comprising one or more cameras and being adapted to provide eye-tracking data by imaging at least one eye of a viewer of the visual display; and an input device configured to accept eye-tracking control data and other input data, wherein: the imaging device is switchable between at least an active mode, a ready mode and an idle mode; the switching time from the idle mode to the active mode is longer than the switching time from the ready mode to the active mode; the imaging device is configured to use active eye illumination in the active mode, which enables tracking of a corneal reflection; and the imaging device is configured, in the ready mode, to reduce an illumination intensity from the value it has in active mode, and to provide eye-tracking data which include eye position but not eye orientation.