METHOD AND APPARATUS FOR CORRECTING TOUCH COORDINATES IN TOUCH SYSTEM
First Claim
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1. A method of operating a touch system, comprising:
- storing a lookup table for correcting a touch coordinate value of a touch panel;
acquiring touch data generated in response to a touch conductor on the touch panel and calculating the touch coordinate value from the acquired touch data;
measuring a size of the touch conductor; and
correcting the touch coordinate value by accessing the lookup table using the touch coordinate value and the size of the touch conductor as input parameters.
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Abstract
A method of operating a touch system comprises storing a lookup table for correcting a touch coordinate value of a touch panel, acquiring touch data generated in response to a touch conductor on the touch panel and calculating the touch coordinate value from the acquired touch data, measuring a size of the touch conductor, and correcting the touch coordinate value by accessing the lookup table using the touch coordinate value and the size of the touch conductor as input parameters.
60 Citations
20 Claims
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1. A method of operating a touch system, comprising:
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storing a lookup table for correcting a touch coordinate value of a touch panel; acquiring touch data generated in response to a touch conductor on the touch panel and calculating the touch coordinate value from the acquired touch data; measuring a size of the touch conductor; and correcting the touch coordinate value by accessing the lookup table using the touch coordinate value and the size of the touch conductor as input parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A touch sensing system, comprising:
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a lookup table storing unit that stores a lookup table used to correct a touch coordinate value of a touch panel; a touch data acquisition unit that acquires touch data in response to a touch on the touch panel; a processor that calculates the touch coordinate value from the acquired touch data, and measures a size of a touched conductor; and a touch coordinate value correction unit that corrects the touch coordinate value by accessing the lookup table using the touch coordinate value and the size of the conductor as input parameters. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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- 17. A touch interface, comprising a three dimensional lookup table that maps a conductor size and a two dimensional coordinate of a touch input onto a two dimensional pixel coordinate.
Specification