Method for managing the operation of an object that is able to contactlessly communicate with a reader
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United States of America Patent
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Aug 13, 2019
Grant Date -
Mar 31, 2016
app pub date -
Aug 28, 2015
filing date -
Sep 29, 2014
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Abstract
A method for managing the operation of an object capable of contactless communication with a reader magnetically coupled to the object includes a phase for transmission of information from the object to the reader and includes a modulation of the impedance of a load connected across the terminals of the antenna of the object. Prior to the transmission phase, a monitoring phase includes a monitoring of the level of amplitude modulation of a modulated test signal present at the antenna of the object and resulting from a test modulation of the impedance of the load and a capacitive modification of the impedance of the load if this level is lower than a threshold.
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