Electronic device and method of processing user actuation of a touch-sensitive input surface
First Claim
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1. An electronic device, comprising:
- a proximity-sensitive touch sensor array which extends along an input surface of the electronic device and having a conductive pattern, anda processing device coupled to the touch sensor array, the processing device being configured to;
sense capacitance values of the conductive pattern of the touch sensor array,determine a variation in perpendicular distance of a finger from the input surface as a function of position on the input surface in a spatially resolved manner from the sensed capacitance values,process the sensed capacitance values to determine a finger angle at which the finger is directed towards the input surface and an actuation position on the input surface, wherein the finger angle defined by the variation in perpendicular distance is derived from a spatial gradient of the sensed capacitance values,derive a finger orientation from the sensed capacitance values, the finger orientation defining a direction of a projection of the finger onto the input surface, anduse the determined finger angle and the derived finger orientation when processing user actuation of a touch-sensitive input surface.
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Abstract
An electronic device includes a proximity-sensitive touch sensor array which extends along an input surface of the electronic device and a processing device coupled to the touch sensor array. The processing device is configured to process data captured by the touch sensor array to determine a finger angle at which a finger is directed towards the input surface and an actuation position on the input surface. The processing device is configured to establish an offset-corrected actuation position as a function of the actuation position and the finger angle.
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Citations
19 Claims
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1. An electronic device, comprising:
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a proximity-sensitive touch sensor array which extends along an input surface of the electronic device and having a conductive pattern, and a processing device coupled to the touch sensor array, the processing device being configured to; sense capacitance values of the conductive pattern of the touch sensor array, determine a variation in perpendicular distance of a finger from the input surface as a function of position on the input surface in a spatially resolved manner from the sensed capacitance values, process the sensed capacitance values to determine a finger angle at which the finger is directed towards the input surface and an actuation position on the input surface, wherein the finger angle defined by the variation in perpendicular distance is derived from a spatial gradient of the sensed capacitance values, derive a finger orientation from the sensed capacitance values, the finger orientation defining a direction of a projection of the finger onto the input surface, and use the determined finger angle and the derived finger orientation when processing user actuation of a touch-sensitive input surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of processing a user actuation of an input surface of an electronic device, the method comprising:
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sensing capacitance values of a conductive pattern of a proximity-sensitive touch sensor array which extends along the input surface of the electronic device, determining a variation in perpendicular distance of a finger from the input surface as a function of position on the input surface in a spatially resolved manner from the sensed capacitance values, processing the sensed capacitance values to determine a finger angle at which a finger is directed towards the input surface and an actuation position on the input surface, wherein determining the finger angle includes deriving the finger angle defined by the variation in perpendicular distance from a spatial gradient of the sensed capacitance values, deriving a finger orientation from the sensed capacitance values, the finger orientation defining a direction of a projection of the finger onto the input surface, and using the determined finger angle and the derived finger orientation when processing user actuation of a touch-sensitive input surface. - View Dependent Claims (17, 18, 19)
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Specification