TOUCH AND HOVER SENSOR COMPENSATION
First Claim
1. A touch and hover sensing device comprising:
- configurable sensor lines for sensing an object proximate thereto, the sensor lines having a resistance; and
a touch and hover control system configured to drive the sensor lines with a voltage for sensing the object and to adjustably configure the sensor lines for substantially reducing the resistance when driving the lines.
1 Assignment
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Accused Products
Abstract
Compensation for sensors in a touch and hover sensing device is disclosed. Compensation can be for sensor resistance and/or sensor sensitivity variation that can adversely affect touch and hover measurements at the sensors. To compensate for sensor resistance, the device can gang adjacent sensors together so as to reduce the overall resistance of the sensors. In addition or alternatively, the device can drive the sensors with voltages from multiple directions so as to reduce the effects of the sensors'"'"' resistance. To compensate for sensor sensitivity variation (generally at issue for hover measurements), the device can apply a gain factor to the measurements, where the gain factor is a function of the sensor location, so as to reduce the sensitivity variation at different sensor locations on the device.
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Citations
25 Claims
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1. A touch and hover sensing device comprising:
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configurable sensor lines for sensing an object proximate thereto, the sensor lines having a resistance; and a touch and hover control system configured to drive the sensor lines with a voltage for sensing the object and to adjustably configure the sensor lines for substantially reducing the resistance when driving the lines. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of compensating for sensors of a sensing panel, the method comprising:
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measuring capacitance associated with an object proximate to the sensing panel; determining the relative proximity of the object to the sensing panel; and based on the determined relative proximity, selectively configuring the sensors for substantially reducing a resistance of the sensors. - View Dependent Claims (8, 9, 10, 11)
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12. A method of compensating for sensors of a sensing panel, the method comprising:
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measuring capacitance at the sensors, the capacitance being indicative of an object hovering over the sensing panel; determining a sensor location having the measurement of the hovering object; and adjusting the measurement based on the determined sensor location so as to compensate for sensitivity variation in the sensors. - View Dependent Claims (13, 14, 15, 16)
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17. A touch and hover sensing device comprising:
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a sensing panel having multiple sensors at locations of the panel, the sensors having varying sensitivities as a function of sensor location; and a touch and hover control system configured to compensate for the sensitivity variation by adjusting capacitance measurements from the sensors according to the sensor locations, the capacitance measurements being caused by the proximate object. - View Dependent Claims (18, 19, 20)
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21. A touch and hover sensing device comprising:
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a touch and hover sensing panel having multiple sensors configured to detect one or more objects proximate to the panel, wherein the objects touch the panel to cause a touch event, hover over the panel to cause a hover event, or touch and hover concurrently to cause touch and hover events; and a touch and hover control system configured to measure capacitance associated with the proximate objects and to at least one of configure the panel or adjust the capacitance measurement so as to compensate for sensor effects on the touch and hover events. - View Dependent Claims (22, 23, 24, 25)
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Specification