MULTI-POINT DETECTION ON A SINGLE-POINT DETECTION DIGITIZER
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United States of America Patent
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Issued Date -
May 21, 2009
app pub date -
Nov 6, 2008
filing date -
Nov 7, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for recognizing a multi-point gesture provided to a digitizer, the method comprises: detecting outputs from a digitizer system corresponding to a multi-point interaction, the digitizer system including a digitizer sensor; determining a region incorporating possible locations derivable from the outputs detected; tracking the region over a time period of the multi-point interaction; determining a change in at least one spatial feature of the region during the multi-point interaction; and recognizing the gesture in response to a pre-defined change.
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