Power management in an eye-tracking system
First Claim
Patent Images
1. 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 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 a value the illumination intensity has in the active mode, and to provide eye-tracking data which include eye position but not eye orientation.
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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 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 a value the illumination intensity has in the active mode, and to provide eye-tracking data which include eye position but not eye orientation.
29 Citations
22 Claims
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1. An imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer, wherein:
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the imaging device is switchable between at least an active mode and a ready 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 a value the illumination intensity has in the active mode, and to provide eye-tracking data which include eye position but not eye orientation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. 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:
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switching the imaging device between at least an active mode and a ready mode; in the active mode, using active eye illumination, which enables tracking of a corneal reflection; and in the ready mode, reducing an illumination intensity from a value the illumination intensity has in the active mode, and providing eye-tracking data which include eye position but not eye-orientation. - View Dependent Claims (18, 19)
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20. A method in a personal computer system, the personal computer system comprising:
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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, using active eye illumination, which enables tracking of a corneal reflection; and in the ready mode, reducing an illumination intensity from a value the illumination intensity has in the active mode, and providing eye-tracking data which include eye position but not eye-orientation. - View Dependent Claims (21, 22)
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Specification