Position detecting method and system
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United States of America Patent
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Nov 24, 2015
Grant Date -
Jan 15, 2015
app pub date -
Jul 15, 2013
filing date -
Jul 15, 2013
priority date (Note) -
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Abstract
A position detecting method includes: transmitting to a position indicator a first excitation signal that has a variable frequency and then receiving a first response signal therefrom, via a target antenna unit including a target antenna; determining, based on the first response signal, a target frequency of the first excitation signal at which the first response signal has a maximum energy level; continuously transmitting to the position indicator a second excitation signal that has the target frequency and then receiving a second response signal from the position indicator, via a group of antenna units including the target antenna unit individually and successively; and obtaining position information corresponding to the position indicator based on the second response signal.
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