Apparatus and method for receiving a touch input
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United States of America Patent
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Mar 8, 2016
Grant Date -
Sep 6, 2012
app pub date -
Nov 17, 2010
filing date -
Nov 17, 2009
priority date (Note) -
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Abstract
Infrared-style touch screens are described having light emission means and light detection means along only two opposing sides of a touch input area, which are nevertheless able to detect and locate a touch object in two dimensions. Certain embodiments use an edge-blurring algorithm to determine the second coordinate, while other embodiments use a form of stereo-scopic vision to determine both coordinates by triangulation. These touch screens have minimal bezel width along two opposing sides of the touch input area, and also offer cost reductions associated with components and product assembly and manufacturing.
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