Method and touch apparatus for calibrating coordinate value near edge of touch panel
AssigneeMStar Semiconductor, Inc.
InventorTzu-Wei Liu
Life of this patent
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Abstract
A method for calibrating a coordinate near an edge of a touch panel is provided. The method includes: obtaining a calculated coordinate according to a capacitance change corresponding to a proximity event; selecting a first linear function from a plurality of first linear functions included in a look-up table (LUT) according to the calculated coordinate and the capacitance change; and obtaining a calibrated coordinate according to the first linear function and the calculated coordinate.
Claims12
A method for calibrating a coordinate value near an edge of a touch panel, comprising:
- obtaining a calculated coordinate according to a capacitance change corresponding to a proximity event;
- selecting a first linear function from a plurality of first linear functions comprised in a look-up table (LUT) according to the calculated coordinate and the capacitance change;
- and
- obtaining a calibrated coordinate according to the first linear function and the calculated coordinate.
A touch apparatus adapted to calibrate a coordinate value of a touch panel, comprising:
- a memory module, comprising a look-up table (LUT);
- and
- a processing module, coupled to the memory module to perform steps of:
- obtaining a calculated coordinate according to a capacitance change corresponding to a proximity event;
- selecting a first linear functions from the first linear functions comprised in the LUT according to the calculated coordinate and the capacitance change;
- and
- obtaining a calibrated coordinate according to the first linear function and the calculated coordinate.
Dependencies are inferred from the claim text.