MULTITOUCH INPUT TO TOUCHPAD DERIVED FROM POSITIVE SLOPE DETECTION DATA
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United States of America Patent
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Issued Date -
Apr 17, 2014
app pub date -
Dec 23, 2013
filing date -
Jun 12, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for using existing touchpad hardware to detect and track multiple objects such as fingers that are in contact with a touchpad, wherein the method extracts information from data that is already being collected, wherein analysis of the data is simplified by identifying objects by only looking for a positive slopes and negative slopes to identify multiple objects in data from the touchpad.
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