Touch sensitive device employing impulse reconstruction
First Claim
1. A method for use with a touch sensitive device comprising a touch plate to which a plurality of sensors are coupled, the method comprising:
- generating, in response to a touch to the touch sensitive device, sensor signals exhibiting dispersion;
correcting for the dispersion in the sensor signals to produce dispersion corrected signals;
determining a location of the touch using the dispersion corrected signals;
reconstructing impulses representative of impulses generated by the touch to the touch sensitive device; and
confirming the location of the touch using the reconstructed impulses.
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Accused Products
Abstract
A touch sensitive apparatus includes a touch plate and a number of sensors coupled to the touch plate. Each of the sensors is configured to sense bending waves in the touch plate and, in response to a touch to the touch plate, generate sensor signals. A controller is coupled to the sensors. The controller corrects for dispersion in the sensor signals and determines a location of the touch using the dispersion corrected signals. The controller performs impulse reconstruction, by which impulses representative of impulses generated by the touch to the touch sensitive device are produced. Using the reconstructed impulses, the controller confirms the location of the touch.
148 Citations
32 Claims
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1. A method for use with a touch sensitive device comprising a touch plate to which a plurality of sensors are coupled, the method comprising:
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generating, in response to a touch to the touch sensitive device, sensor signals exhibiting dispersion;
correcting for the dispersion in the sensor signals to produce dispersion corrected signals;
determining a location of the touch using the dispersion corrected signals;
reconstructing impulses representative of impulses generated by the touch to the touch sensitive device; and
confirming the location of the touch using the reconstructed impulses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A touch sensitive apparatus, comprising:
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a touch plate;
a plurality of sensors coupled to the touch plate, each of the sensors configured to sense bending waves in the touch plate and, in response to a touch to the touch plate, generate sensor signals; and
a controller coupled to the sensors, the controller correcting for dispersion in the sensor signals, determining a location of the touch using the dispersion corrected signals, and reconstructing impulses representative of impulses generated by the touch to the touch sensitive device, the controller confirming the location of the touch using the reconstructed impulses. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A touch sensitive apparatus comprising a touch plate to which a plurality of sensors are coupled, the apparatus comprising:
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means for generating sensor signals in response to a touch to the touch sensitive device;
means for correcting for dispersion in the sensor signals to produce dispersion corrected signals;
means for determining a location of the touch using the dispersion corrected signals;
means for reconstructing impulses representative of impulses generated by the touch to the touch sensitive device; and
means for confirming the location of the touch using the reconstructed impulses. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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Specification