Threshold barrier system
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United States of America Patent
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Aug 31, 2021
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N/A
app pub date -
Jul 10, 2019
filing date -
Feb 27, 2017
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Abstract
A system is described that includes a transmitter for generating a magnetic field comprising a first detection region and a second detection region, wherein the first detection region is different than the second detection region. The system comprises a receiver configured to detect at a location of the receiver in the magnetic field a magnetic field vector, a polarity, and at least one additional vector. The system comprises the receiver configured to use the magnetic field vector, the polarity, and the at least one additional vector to determine a position of the receiver in the magnetic field.
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