发明名称 Load Modulation in an Electromagnetic Transponder
摘要 The invention relates to a method for modulating data (D) to be transmitted by an electromagnetic transponder ( 10 ') by means of at least one resistive and/or capacitive element ( 18 ) for modulating the charge of an oscillating circuit that it comprises. The invention consists of combining, by an involutive function ( 19 ), the flow of data to be transmitted with a spread spectrum sequence (c<SUB>i</SUB>(t)), said sequence being selected according to a configuration message (SRFU) received from a read/write terminal ( 1 ').
申请公布号 US2008197973(A1) 申请公布日期 2008.08.21
申请号 US20050628425 申请日期 2005.06.03
申请人 发明人 ENGUENT JEAN-PIERRE
分类号 H04Q5/22;G06K7/10;G06K19/07;H04B1/59;H04B1/707;H04B5/02 主分类号 H04Q5/22
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