Method and System for Processing Signals of Touch Panel
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United States of America Patent
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Issued Date -
Aug 16, 2012
app pub date -
Mar 24, 2011
filing date -
Feb 10, 2011
priority date (Note) -
Abandoned
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Abstract
A method and system for processing the signals of a touch panel are provided. Therein, the capacitive values of each sensor on the touch panel are successively taken during a period of time. Then, the average capacitive value of each sensor is calculated for computing estimated touch point coordinates. The distance between each two sets of such coordinates sensed respectively at two sensing time points is calculated. If a distance thus calculated is less than a predetermined distance, the two sets of estimated touch point coordinates corresponding to the distance are defined as valid touch point coordinates. If a series of estimated touch point coordinates are successively defined as valid touch point coordinates for a predetermined number of times, the touch point corresponding to each set of valid touch point coordinates in the series is defined as a valid touch point. Thus, the precision of touch point determination is enhanced.
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