Touch location sensing system and method employing sensor data fitting to a predefined curve
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United States of America Patent
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Dec 1, 2015
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app pub date -
Nov 8, 2006
filing date -
Nov 8, 2006
priority date (Note) -
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Abstract
Methods and devices for determining the location of a touch implement relative to a touch locating sensing device involve developing touch signals at a touch sensor in response to a touch implement on or near the touch surface. Data associated with the touch signals is fitted to a predefined curve. The predefined curve is preferably defined by a charged sphere near a conducting plane, the charged sphere representative of an end of the touch implement and the conducting plane representative of the touch surface. A location of the touch implement is determined relative to the touch surface using the predefined curve to which the data is fitted.
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