MULTI-TOUCH DETECTION METHOD AND DEVICE THEREOF
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United States of America Patent
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Issued Date -
Nov 15, 2012
app pub date -
May 1, 2012
filing date -
May 9, 2011
priority date (Note) -
Abandoned
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Abstract
A multi-touch detection method and device thereof includes multiple first electrode rows spacedly intersecting with multiple second electrode rows. The first and second electrical signals are applied respectively to each first electrode row and each second electrode row to detect capacitance variations of the first and second electrode rows so as to select first and second candidate electrode rows from the first and second electrode rows based on the capacitance variations. Individual third electrical signals are applied respectively to the first candidate electrode rows to detect capacitance variations of the second candidate electrode rows so as to determine real touched points on the touch screen.
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