CLOSE-RANGE SENSING METHOD AND DEVICE BASED ON CAPACITIVE TOUCH SCREEN AND COMMUNICATION TERMINAL
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United States of America Patent
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Issued Date -
Jan 1, 2015
app pub date -
Feb 10, 2014
filing date -
Jun 28, 2013
priority date (Note) -
Abandoned
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Abstract
A close-range sensing method based on a capacitive touch screen is provided, which includes: short-circuiting mutually N electrodes in the capacitive touch screen and connecting the N electrodes to a detecting circuit, where N is equal to or greater than 2; performing, by the detecting circuit, detection on the N electrodes; and calculating a distance from the capacitive touch screen to a human body or an object nearby based on a detection result. A corresponding device and a communication terminal are further provided in the embodiment of the present invention. The detecting data of the N electrodes can be accumulated to improve the accuracy of the detection. And, the detection noise is the same as the noise in the case where the detection is performed on any one electrode separately.
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