POWER MANAGEMENT IN AN EYE-TRACKING SYSTEM
First Claim
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 ready mode, to reduce an illumination intensity from the value it has in active mode.
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Accused Products
Abstract
A personal computer system includes a visual display, an imaging device adapted to provide eye-tracking data by imaging the face of a viewer of the visual display, and an input device for accepting eye-tracking control data and other input data. The imaging device is switchable between at least an active mode, a ready mode and an idle mode, and 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 eye-tracking data provided in the ready mode may include eye position but not eye orientation. The system may include a dedicated input device for forcing the imaging device into active mode by directly triggering an interrupt; alternatively, the dedicated input device forces it permanently into idle mode.
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Citations
18 Claims
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1. A personal computer system comprising:
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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 ready mode, to reduce an illumination intensity from the value it has in active mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method in a personal computer system comprising:
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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, said method comprising the steps of; switching the imaging device between at least an active mode, a ready mode and an idle mode, wherein 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; using active eye illumination, which enables tracking of a corneal reflection, in the active mode; and reducing, in ready mode, an illumination intensity from the value it has in active mode. - View Dependent Claims (16, 17, 18)
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Specification