Contact sensitive device
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United States of America Patent
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-
May 20, 2008
Grant Date -
May 24, 2007
app pub date -
Dec 21, 2006
filing date -
Dec 6, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A contact sensitive device includes a member capable of supporting bending waves and a plurality of sensors mounted on the member for measuring bending wave vibration in the member. The sensors measure the bending wave signals and by calculating a phase angle for each measured bending wave signal and a phase difference between the phase angles of at least two pairs of sensors so that at least two phase differences are calculated, the location of the contact can be determined.
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