Invention Grant
US09529477B2 Touch screen panel using digitally encoded light 有权
触摸屏面板使用数字编码光

Touch screen panel using digitally encoded light
Abstract:
Techniques are described for determining a contact location on a touch screen panel. The techniques transmit an optical signal that includes digital bits through the touch screen, and determine for which digital bits the optical power level reduced. Based on the determined digital bits, the techniques determine the contact location on the touch screen panel.
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