METHOD AND DEVICE FOR TOUCH SCREEN SENSING, CORRESPONDING APPARATUS AND COMPUTER PROGRAM PRODUCT
First Claim
1. A method, comprising:
- operating a capacitive touch screen the operating including;
producing a capacitance map of capacitance values for said screen; and
identifying locations of the screen exposed to touch by a user by comparing said capacitance values against at least one sensing threshold;
extracting a plurality of descriptors by processing the capacitance map descriptor processing, the descriptors being indicative of said screen being in one of a plurality of different operating conditions;
identifying at least one of the plurality of different operating conductions by applying to said descriptors classifier rules; and
selecting said at least one sensing threshold as a function of the at least one operating condition identified.
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Accused Products
Abstract
A capacitive touch screen of e.g., a mobile communications device such as a smart phone or tablet is operated by producing a capacitance map of capacitance values for the screen, wherein the capacitance values are indicative of locations of the screen exposed to touch by a user, and by identifying locations of the screen exposed to touch by a user by comparing the capacitance values against settings of sensing thresholds. Descriptor processing is applied to the capacitance map to extract a set of descriptors indicative of said screen being in one of a plurality of different operating conditions. A set of rules is applied to these descriptors to identify one of a plurality of different operating conditions, and selecting the setting of sensing thresholds as a function of the operating condition thus identified.
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Citations
10 Claims
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1. A method, comprising:
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operating a capacitive touch screen the operating including; producing a capacitance map of capacitance values for said screen; and identifying locations of the screen exposed to touch by a user by comparing said capacitance values against at least one sensing threshold; extracting a plurality of descriptors by processing the capacitance map descriptor processing, the descriptors being indicative of said screen being in one of a plurality of different operating conditions; identifying at least one of the plurality of different operating conductions by applying to said descriptors classifier rules; and selecting said at least one sensing threshold as a function of the at least one operating condition identified. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A device, comprising:
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a capacitive touch screen; electronic circuitry coupled to the screen, the circuitry configured to; produce a capacitance map of capacitance values for said screen; extract descriptors from said capacitance map, the descriptors being indicative of said screen being in one of a plurality of different operating conditions; apply to said descriptors a set of classifier rules to identify said one of a plurality of different operating conditions; and compare said capacitance values against at least one sensing threshold selected as a function of the operating condition identified, identify locations of the screen exposed to touch by a user based on the comparison. - View Dependent Claims (10)
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Specification