Acoustic condition sensor employing a plurality of mutually non-orthogonal waves
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United States of America Patent
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Dec 8, 2009
Grant Date -
Mar 13, 2008
app pub date -
Nov 2, 2007
filing date -
Aug 12, 1996
priority date (Note) -
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Abstract
A system and method for processing input from a touchscreen having a substrate and a touch surface thereof, adapted for manual interaction with a human hand, having an electronic sensor associated with the substrate adapted to detect a pressure sensitive response to at least two concurrent touches on the touch surface, having a control which receives at least one signal representing the at least two concurrent touches on the touch surface; processes the at least one signal in a manner adapted to maintain a distinction between the at least two concurrent touches; determines a respective difference of at least one coordinate between the at least two concurrent touches; and responds by selectively producing a response at least in dependence on a relationship of the coordinate of the at least two concurrent touches.
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