Electronic toll collection receiver and method for improving receiving performance
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United States of America Patent
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Nov 21, 2017
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N/A
app pub date -
Dec 14, 2016
filing date -
Dec 8, 2016
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Abstract
An electronic toll collection receiver, comprising: an enveloping module configured to envelope an amplitude modulation (AM) signal; an averaging module connected to the enveloping module, configured to obtain an average value of the enveloped AM signal; a direct current blocking module connected to the enveloping module and the averaging module, configured to eliminate the average value from the enveloped AM signal; a comparing module connected to the direct current blocking module, configured to compare the average value and each of amplitude values of the enveloped AM signal; a correcting module connected to the comparing module and the directing current blocking module, configured to correct output values from the comparing module; and a decoder module connected to the correcting module, configured to decode the corrected output values from the correcting module.
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