Near field communication method of detection of a tag presence by a tag reader
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United States of America Patent
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Aug 8, 2017
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Nov 20, 2013
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Nov 27, 2012
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Abstract
A Near Field Communication method performed by a tag reader detects whether a tag is present. The method includes stimulating the tag reader's transmitter to generate an impulse response, evaluating the impulse response generated by the transmitter to obtain an evaluated impulse response, and assessing whether a tag is present based on the evaluated impulse response.
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