Method and algorithm for accurate finger motion tracking
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United States of America Patent
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Jul 24, 2012
Grant Date -
Sep 11, 2008
app pub date -
Dec 14, 2007
filing date -
Apr 16, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Enhanced accuracy finger position and motion sensors devices, algorithms, and methods are disclosed that can be used in a variety of different applications. The sensors can be used in conjunction with partial fingerprint imagers to produce improved fingerprint scanners. The finger motion sensors may also be used (either with or without a partial fingerprint imager) to produce highly accurate fingerprint images as well as to control electronic devices. Here improved signal analysis algorithms and methods are disclosed that enable finger position to be determined with higher levels of accuracy as the finger is swiped over finger position sensing arrays. These algorithms are particularly useful for deep finger penetrating radio frequency (RF) based sensing arrays.
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