DETECTING MULTI-TOUCH INPUTS
First Claim
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1. A system for determining a touch contact location, comprising:
- a communication interface configured to receive a signal that has been disturbed by a touch input on a surface; and
a processor coupled with the communication interface and configured to;
transform the received signal to determine a spatial domain signal;
compare the spatial domain signal with an expected signal associated with a potential location of a source of a disturbance caused by the touch input; and
determine the touch contact location of the touch input based at least in part on the comparison.
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Abstract
Determining a touch contact location is disclosed. A signal that has been disturbed by a touch input on a surface is received. The received signal is transformed to determine a spatial domain signal. The spatial domain signal is compared with an expected signal associated with a potential location of a source of a disturbance caused by the touch input. The touch contact location of the touch input is determined based at least in part on the comparison.
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Citations
20 Claims
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1. A system for determining a touch contact location, comprising:
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a communication interface configured to receive a signal that has been disturbed by a touch input on a surface; and a processor coupled with the communication interface and configured to; transform the received signal to determine a spatial domain signal; compare the spatial domain signal with an expected signal associated with a potential location of a source of a disturbance caused by the touch input; and determine the touch contact location of the touch input based at least in part on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for determining a touch contact location, comprising:
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receiving a signal that has been disturbed by a touch input on a surface; transforming the received signal to determine a spatial domain signal; using a processor to compare the spatial domain signal with an expected signal associated with a potential location of a source of a disturbance caused by the touch input; and determining the touch contact location of the touch input based at least in part on the comparison.
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20. A computer program product for determining a touch contact location, the computer program product being embodied in a tangible computer readable storage medium and comprising computer instructions for:
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receiving a signal that has been disturbed by a touch input on a surface; transforming the received signal to determine a spatial domain signal; comparing the spatial domain signal with an expected signal associated with a potential location of a source of a disturbance caused by the touch input; and determining the touch contact location of the touch input based at least in part on the comparison.
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Specification