Method for demodulating phase of signal carrying information in microchip card, involves sampling signal to be demodulated at frequency corresponding to natural number of samples, and another number, where numbers are prime numbers

The method involves sampling signal to be demodulated at frequency corresponding to a natural number of successive samples taken into account for determining a phase of the signal, and corresponding to another natural number, where the former natural number and the latter natural number are relative...

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Bibliographic Details
Main Author LAMOTTE FRANCIS
Format Patent
LanguageEnglish
French
Published 27.07.2012
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:The method involves sampling signal to be demodulated at frequency corresponding to a natural number of successive samples taken into account for determining a phase of the signal, and corresponding to another natural number, where the former natural number and the latter natural number are relative prime numbers. Each sample provides a sign of the signal to be demodulated with respect to a reference level representing median value of the signal that carries information. An independent claim is also included for a phase demodulator. L'invention concerne un procédé de démodulation de phase et un démodulateur de phase, dans lesquels un signal à démoduler est échantillonné à une fréquence fonction d'un premier nombre entier naturel d'échantillons successifs pris en compte pour la détermination de la phase et d'un second nombre entier naturel, lesdits nombres étant premiers entre eux.
Bibliography:Application Number: FR20110050450