Touch detecting method, touch detecting system and touch terminal for touch sensor
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United States of America Patent
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Oct 24, 2017
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app pub date -
Nov 25, 2014
filing date -
Nov 27, 2012
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Abstract
The present invention relates to a touch technology field, provides a touch detecting method for a touch sensor, the method comprises the following steps: putting the touch sensor into a mutual capacitance mode and a self capacitance mode alternatively, and scanning and detecting the rows and columns of a capacitance array of the touch sensor; when a touch state is preliminarily judged as a multi-touch according to a scanning and detecting result in the mutual capacitance mode, implementing envelopment analysis for data obtained by sampling in the self capacitance mode, determining whether the touch state in the mutual capacitance mode is a single touch or the multi-touch, outputting one touch coordinate if the touch state is the single touch; and outputting a plurality of touch coordinates if the touch state is the multi-touch. The present invention also provides a touch detecting system and a touch terminal for the touch sensor. The present invention improves the accuracy of a touch detection result of the touch sensor, particularly the accuracy of the detection result for distinguishing whether the touch is the single touch or the multi-touch in the case that the touch control terminal is subjected to a large area touch in a floating state.
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