System and method for detecting and characterizing touch inputs at a human-computer interface

One variation of a method for detecting an input at a touch sensor-including a force-sensitive layer exhibiting variations in local resistance responsive to local variations in applied force on a touch sensor surface and a set of drive and sense electrodes-includes: driving a drive electrode with a...

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Main Authors Zarraga, John Aaron, Rosenberg, Ilya Daniel, Rajanna, Vijay, Moscovich, Tomer
Format Patent
LanguageEnglish
Published 09.04.2024
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Abstract One variation of a method for detecting an input at a touch sensor-including a force-sensitive layer exhibiting variations in local resistance responsive to local variations in applied force on a touch sensor surface and a set of drive and sense electrodes-includes: driving a drive electrode with a drive signal; reading a sense signal from a sense electrode; detecting a alternating-current component and a direct-current component of the sense signal; in response to a magnitude of the direct-current component of the sense signal falling below a threshold magnitude, detecting an input on the touch sensor surface during the scan cycle based on the alternating-current component of the sense signal; and, in response to the magnitude of the direct-current component of the sense signal exceeding the threshold magnitude, detecting the input on the touch sensor surface during the scan cycle based on the direct-current component of the sense signal.
AbstractList One variation of a method for detecting an input at a touch sensor-including a force-sensitive layer exhibiting variations in local resistance responsive to local variations in applied force on a touch sensor surface and a set of drive and sense electrodes-includes: driving a drive electrode with a drive signal; reading a sense signal from a sense electrode; detecting a alternating-current component and a direct-current component of the sense signal; in response to a magnitude of the direct-current component of the sense signal falling below a threshold magnitude, detecting an input on the touch sensor surface during the scan cycle based on the alternating-current component of the sense signal; and, in response to the magnitude of the direct-current component of the sense signal exceeding the threshold magnitude, detecting the input on the touch sensor surface during the scan cycle based on the direct-current component of the sense signal.
Author Zarraga, John Aaron
Rosenberg, Ilya Daniel
Moscovich, Tomer
Rajanna, Vijay
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Snippet One variation of a method for detecting an input at a touch sensor-including a force-sensitive layer exhibiting variations in local resistance responsive to...
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COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
Title System and method for detecting and characterizing touch inputs at a human-computer interface
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