Injected Touch Noise Analysis
First Claim
Patent Images
1. A method, comprising:
- inducing, during a listening scan of a sense array, an injected touch to produce similar data as would be present during a touch scan of the sense array with a conductive object at a known location on the sense array; and
computing, using the data, an estimate of a noise metric based on the injected touch.
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Abstract
A processing device configured to induce, during a listening scan of a sense array, an injected touch to produce similar data as would be present during a touch scan of the sense array with a conductive object at a known location on the sense array. The processing device is further configured to compute, using the data, an estimate of a noise metric based on the injected touch.
24 Citations
20 Claims
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1. A method, comprising:
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inducing, during a listening scan of a sense array, an injected touch to produce similar data as would be present during a touch scan of the sense array with a conductive object at a known location on the sense array; and computing, using the data, an estimate of a noise metric based on the injected touch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus, comprising
a processing device, the processing device configured to: -
induce, during a listening scan of a sense array, an injected touch to produce similar data as would be present during a touch scan of the sense array with a conductive object at a known location on the sense array; and compute, using the data, an estimate of a noise metric based on the injected touch. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A system comprising:
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a capacitive sense array configured to generate touch data for a touch detected proximate to the capacitive sense array, the touch data represented as a plurality of cells; and a processing device coupled to the capacitive sense array, wherein the processing device is configured to; induce, during a listening scan of a sense array, an injected touch to produce similar data as would be present during a touch scan of the sense array with a conductive object at a known location on the sense array; and compute, using the data, an estimate of a noise metric based on the injected touch. - View Dependent Claims (20)
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Specification