Compensating for multi-touch signal bias drift in touch panels
First Claim
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1. A method comprising:
- selecting a sensor in an array of capacitive sensors;
determining a row intensity for the selected sensor, wherein the row intensity is determined based at least in part on a respective intensity associated with each of at least one additional sensor in a same row of the array as the selected sensor;
determining a column intensity for the selected sensor, wherein the column intensity is determined based at least in part on a respective intensity associated with each of at least one additional sensor in a same column of the array as the selected sensor; and
compensating the selected sensor for multi-touch signal bias drift, wherein the compensating includes adjusting an intensity of the selected sensor based at least in part on the row intensity and the column intensity.
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Abstract
A system and method provide for selecting a sensor in an array of capacitive sensors, determining a row intensity for the selected sensor, and determining a column intensity for the selected sensor. The system and method may also provide for compensating the selected sensor for multi-touch signal bias drift, wherein the compensating may include adjusting an intensity of the selected sensor based on the row and column intensity.
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Citations
18 Claims
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1. A method comprising:
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selecting a sensor in an array of capacitive sensors; determining a row intensity for the selected sensor, wherein the row intensity is determined based at least in part on a respective intensity associated with each of at least one additional sensor in a same row of the array as the selected sensor; determining a column intensity for the selected sensor, wherein the column intensity is determined based at least in part on a respective intensity associated with each of at least one additional sensor in a same column of the array as the selected sensor; and compensating the selected sensor for multi-touch signal bias drift, wherein the compensating includes adjusting an intensity of the selected sensor based at least in part on the row intensity and the column intensity. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A touch panel comprising:
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an array of capacitive sensors; and an adjustment module to compensate each sensor in the array for multi-touch signal bias drift, wherein the adjustment module is configured to; select a sensor in the array, determine a row intensity for the selected sensor, wherein the row intensity is determined based at least in part on a respective intensity associated with each of at least one additional sensor in a same row of the array as the selected sensor, determine a column intensity for the selected sensor, wherein the column intensity is determined based at least in part on a respective intensity associated with each of at least one additional sensor in a same column of the array as the selected sensor, and adjust an intensity of the selected sensor based at least in part on the row intensity and column intensity. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A computing system comprising:
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a housing having a notebook form factor; and a touch panel coupled to a horizontal surface of the housing, the touch panel including an array of capacitive sensors and an adjustment module to compensate each sensor in the array for multi-touch signal bias drift, wherein the adjustment module is configured to; select a sensor in the array, determine a row intensity for the selected sensor, wherein the row intensity is determined based at least in part on a respective intensity associated with each of at least one additional sensor in a same column of the array as the selected sensor, determine a column intensity for the selected sensor, wherein the column intensity is determined based at least in part on a respective intensity associated with each of at least one additional sensor in a same column of the array as the selected sensor, and adjust an intensity of the selected sensor based at least in part on the row intensity and column intensity. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification