Power management in an eye-tracking system
AssigneeTobii AB
InventorsHenrik Eskilsson, Mårten Skogö, John Elvesjö, Peter Blixt
Life of this patent
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Abstract
An imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer, wherein: the imaging device is switchable between at least an active mode and a ready mode; the imaging device is configured, in the active mode, to use active eye illumination, which enables tracking of a corneal reflection, and to provide eye tracking data which include eye position and eye orientation; and the imaging device is configured, in the ready mode, to reduce an illumination intensity from a value the illumination intensity has in the active mode.
Claims22
An imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer, wherein:
- the imaging device is switchable between at least an active mode and a ready mode;
- the imaging device is configured, in the active mode, to maintain a first result history of data measurements based on eye-tracking data which include eye position and eye orientation;
- the imaging device is configured, in the ready mode, to maintain a second result history of data measurements based on eye-tracking data which include eye position and omit eye orientation;
- and
- upon switching to the active mode from the ready mode, the imaging device provides additional eye-tracking data based on a combination of the data measurements from the first result history and the data measurements from the second result history.
A method in an imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer, said method comprising the steps of:
- switching the imaging device between at least an active mode and a ready mode;
- in the active mode, maintaining a first result history of data measurements based on eye-tracking data which include eye position and eye orientation;
- and
- in the ready mode, maintaining a second result history of data measurements based on eye-tracking data which include eye position and omit eye orientation;
- and
- upon switching to the active mode from the ready mode, providing additional eye-tracking data based on a combination of the data measurements from the first result history and the data measurements from the second result history.
A method in a personal computer system, the personal computer system comprising:
- a visual display;
- an imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer of the visual display;
- and
- an input device for accepting eye-tracking control data and other input data,
- said method comprising the steps of:
- switching the imaging device between at least an active mode and a ready mode;
- in the active mode, maintaining a first result history of data measurements based on eye-tracking data which include eye position and eye orientation;
- and
- in the ready mode, maintaining a second result history of data measurements based on eye-tracking data which include eye position and omit eye orientation;
- and
- upon switching to the active mode from the ready mode, providing additional eye-tracking data based on a combination of the data measurements from the first result history and the data measurements from the second result history.
Dependencies are inferred from the claim text.