Method and system for detecting touch events based on magnitude ratios
First Claim
Patent Images
1. A method of detecting a touch event on a touch panel, comprising:
- obtaining at least first and second signals from at least two sensors, where the at least first and second signals are responsive to a touch event;
calculating a first amplitude magnitude associated with the first signal and calculating a second amplitude magnitude associated with the second signal;
determining a magnitude ratio between the first and second amplitude magnitudes; and
identifying a touch location based on the magnitude ratio.
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Abstract
A method for detecting a touch event on a touch panel comprises obtaining at least first and second signals from at least two sensors where the at least first and second signals are responsive to a touch event. A first amplitude magnitude associated with the first signal is calculated and a second amplitude magnitude associated with the second signal is calculated. A magnitude ratio is determined between the first and second amplitude magnitudes, and a touch location is identified based on the magnitude ratio.
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Citations
20 Claims
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1. A method of detecting a touch event on a touch panel, comprising:
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obtaining at least first and second signals from at least two sensors, where the at least first and second signals are responsive to a touch event; calculating a first amplitude magnitude associated with the first signal and calculating a second amplitude magnitude associated with the second signal; determining a magnitude ratio between the first and second amplitude magnitudes; and identifying a touch location based on the magnitude ratio. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A touch system, comprising:
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a touch panel; at least two sensors to obtain at least two signals associated with a touch event on the touch panel; and a processor module to perform frequency transforms based on the at least two signals to form frequency transform data sets, the processor module producing amplitude magnitudes based on the frequency transform data sets, the processor module comparing a ratio of the amplitude magnitudes associated with at least two of the frequency transform data sets to a calibration file of template fingerprints associated with known locations on the touch panel to determine a coordinate location associated with the touch event, the template fingerprints being at least in part based on magnitude ratios. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A computer readable medium for use in an acoustic fingerprint based touch system, comprising:
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instructions to process digitized signals from at least two sensors where the digitized signals are responsive to a touch event on a touch panel, the digitized signals comprising at least first and second signals; instructions to calculate a first amplitude magnitude associated with the first signal and a second amplitude magnitude associated with the second signal; and instructions to identify a touch location associated with the touch event based on a magnitude ratio that is based on the first and second amplitude magnitudes. - View Dependent Claims (18, 19, 20)
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Specification