Rf transponder system having error detection and correction

Details Rf transponder system having error detection and correction Rf transponder system having error detection and correction

H - Electricity

04

B

H04B 1/59 (2006.01) H04B 17/00 (2006.01) H04L 1/08 (2006.01)

Patent

CA 2213754

An RF transponder system is provided that is capable of detecting and correctingdata transmission errors. The RF transponder system includes an exciter that generates an RF excitation signal and a transponder that receives the RF excitation signal and is powered thereby. The transponder generates and transmits a RF response signal including a plurality of data sets each containing a common message. At least one of the data sets is encoded in a manner different from the remaining data sets. The RF response signal is received by a reader that decodes the encoded data sets. Corresponding bits of each of the data sets are compared for purposes of error detection. If a majority of corresponding bits from each of the data sets match, a valid bit is defined thereby. Bits that are not in the majority are discarded. An invalid bit is defined where less than a majority of corresponding bits match a selected bit of a selected data set.

Système de transpondeur RF capable de détecter et de corriger des erreurs de transmission de données. Comprend un excitateur qui produit un signal d'excitation RF et un transpondeur qui reçoit ledit signal par lequel il est excité. Le transpondeur produit et transmet un signal de réponse RF comprenant un certain nombre d'ensembles de données qui renferment un message commun. Au moins un des ensembles de données est codé d'une manière différente des autres. Le signal de réponse RF est reçu par un lecteur qui décode les ensembles de données codées. Les bits correspondants de chacun des ensembles de données sont comparés pour fins de détection d'erreurs. Si la majorité des bits correspondants de chacun des ensembles de données concordent, un bit valide est défini. Les bits qui ne font pas partie de la majorité sont rejetés. Un bit invalide est défini lorsque seule une minorité de bits correspondants concordent avec un bit choisi d'un ensemble de données choisi.

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