| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a new device and method for realizing a transponder which read information within a region of a wide magnetic field by reducing a signal-to-noise ratio. <P>SOLUTION: The invention relates to a method for demodulating information emitted by amplitude modulation from a reader (2) to a transponder (4). The method comprises: a step of comparing variations of a slaving voltage (Vc) of the transponder (4) with threshold values, and to transform the results of this comparison into an authorized modulation level skip value: and a step of adding this skip to a previous first modulation level to determine a second modulation level. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
