RF TRANSPONDER SYSTEM HAVING ERROR DETECTION AND CORRECTION

摘要

An RF transponder system is provided that is capable of detecting and correc tingdata transmission errors. The RF transponder system includes an exciter that generates an RF excitation signal and a transponder that receives the RF exc itation 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 rema ining data sets. The RF response signal is received by a reader that decodes the encode d 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 ma tch, 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 bi t of a selected data set.