CAPACITIVE TOUCH SCREEN AND INFORMATION PROCESSING METHOD THEREFOR
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United States of America Patent
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Issued Date -
Aug 7, 2014
app pub date -
Jan 28, 2014
filing date -
Feb 4, 2013
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Abstract
A capacitive touch screen and an information processing method therefor are disclosed. The capacitive touch screen is provided with a conductor layer and an oscillator for generating an alternate current signal, and the method includes the following steps controlling an oscillation frequency of the oscillator to a first frequency; obtaining a first coupling capacitance value between an operational body and the conductor layer under the first frequency when the operational body carries out a first touch control operation to the capacitive touch screen; changing the first frequency so as to obtain a plurality of first coupling capacitance values; using the plurality of first coupling capacitance values to form a first oscillation frequency-capacitance curve; analyzing the first oscillation frequency-capacitance curve according to a predetermined rule to determine a type of the first touch control operation and/or information of source of the operational body.
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