SYSTEM AND METHOD FOR DUAL MODE STYLUS DETECTION
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United States of America Patent
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Issued Date -
Sep 4, 2014
app pub date -
Mar 1, 2013
filing date -
Mar 1, 2013
priority date (Note) -
Abandoned
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Abstract
A system and method for improved accuracy in the detection of a stylus on a touch sensitive surface of an electronic device, such as a tablet. A dual method of detection is employed including electromagnetic induction detection of the stylus as it is in the vicinity of the screen of the electronic device, as well as capacitive detection of the stylus tip as it contacts the touch screen. The electronic device detects the presence of the top of the stylus and provides the general coordinates of its position. Then, as touches occur on the surface of the device, e.g., the stylus tip as well as the various parts of the user's hand, the system uses the coordinates supplied from the electromagnetic induction detection to very quickly and accurately pinpoint the actual location of the stylus input on the surface of the device.
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