METHOD FOR IDENTIFYING TOUCH ON A TOUCH SCREEN
First Claim
1. A method for identifying input to a digitizer sensor, the method comprising:
- defining a function for modeling spread of a touch signal around a touch location;
defining a matrix of data from outputs sampled from a grid based digitizer sensor, wherein the grid based digitizer sensor defines a grid of junctions, and wherein entries in the matrix correspond to outputs at junctions of the grid based sensor;
performing a convolution operation on the matrix of data based on the function defined for modeling spread of the touch signal, the convolution operation providing an updated matrix of data with enhanced touch information; and
detecting coordinates of the input to the digitizer sensor from the updated matrix of data.
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Abstract
A method for identifying input to a grid based digitizer sensor includes defining a matrix of data from outputs sampled from digitizer sensor, defining a function for modeling spread of a touch signal around a touch location and performing a convolution operation on the matrix of data based on the function defined for modeling spread of the touch signal. The grid based digitizer sensor defines a grid of junctions and entries in the matrix correspond to outputs at junctions of the grid based sensor. The convolution operation provides an updated matrix of data with enhanced touch information and detecting coordinates of the input to the digitizer sensor from the updated matrix of data.
19 Citations
15 Claims
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1. A method for identifying input to a digitizer sensor, the method comprising:
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defining a function for modeling spread of a touch signal around a touch location; defining a matrix of data from outputs sampled from a grid based digitizer sensor, wherein the grid based digitizer sensor defines a grid of junctions, and wherein entries in the matrix correspond to outputs at junctions of the grid based sensor; performing a convolution operation on the matrix of data based on the function defined for modeling spread of the touch signal, the convolution operation providing an updated matrix of data with enhanced touch information; and detecting coordinates of the input to the digitizer sensor from the updated matrix of data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification