Hand temperature compensation
First Claim
1. A method of calibrating presence and gesture detection in a mobile electronic communications device having a thermal sensor, the method comprising:
- sensing a background temperature via the thermal sensor and designating the sensed background temperature as room temperature;
detecting via a secondary sensor located adjacent to the thermal sensor that a user has touched the thermal sensor;
setting a temperature detected at the thermal sensor just prior to the detected touch as hand temperature;
determining a difference between the hand temperature and the room temperature; and
calibrating presence and gesture detection for the device based on the determined difference.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods for calibrating presence and gesture detection thermal sensors in a mobile electronic communications device entail sensing an ambient temperature and designating the sensed ambient temperature as room temperature, and determining that a user appendage has touched, or is close to but not touching, the thermal sensor. If the user appendage has touched a lens of the thermal sensor, a sensed temperature just prior to that event is used as hand temperature. If the user appendage is close to but not touching the lens of the thermal sensor, the temperature during that event is used as hand temperature. A difference between the hand temperature and the room temperature is then determined and the presence and gesture detection functions for the device are calibrated based on the determined difference.
6 Citations
16 Claims
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1. A method of calibrating presence and gesture detection in a mobile electronic communications device having a thermal sensor, the method comprising:
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sensing a background temperature via the thermal sensor and designating the sensed background temperature as room temperature; detecting via a secondary sensor located adjacent to the thermal sensor that a user has touched the thermal sensor; setting a temperature detected at the thermal sensor just prior to the detected touch as hand temperature; determining a difference between the hand temperature and the room temperature; and calibrating presence and gesture detection for the device based on the determined difference. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of calibrating presence and gesture detection in a mobile electronic communications device having a thermal sensor, the device comprising:
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sensing a background temperature via the thermal sensor and designating the sensed background temperature as room temperature; determining via a secondary sensor that a user appendage is close to but not touching the thermal sensor; setting a temperature detected while the user appendage is close to but not touching the thermal sensor as hand temperature; determining a difference between the hand temperature and the room temperature; and calibrating presence and gesture detection for the device based on the determined difference. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of calibrating presence and gesture detection in a mobile electronic communications device having a thermal sensor, the device comprising:
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sensing a background temperature via the thermal sensor and designating the sensed background temperature as room temperature; determining that a user appendage is touching the thermal sensor by detecting a start of a thermal transfer at the thermal sensor that is indicative of contact between the user and a lens of the thermal sensor; setting a temperature detected immediately prior to the start of the thermal transfer as hand temperature; determining a difference between the hand temperature and the room temperature; and calibrating presence and gesture detection for the device based on the determined difference. - View Dependent Claims (16)
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Specification