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

1996-09-04

1998-04-21

Chung, Phung M.

Excavating

371 48, G06F 1108

Patent

active

057426180

ABSTRACT:
An RF transponder system is provided that is capable of detecting and correcting data 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.

REFERENCES:
patent: 4399437 (1983-08-01), Falck et al.
patent: 4730188 (1988-03-01), Milheiser
Binstock A. et al., Practical Algorithms for Programmers, Addison-Wesley Publishing Co., pp. 553-569, 1995.
"e5550 Standard R/W Identification IC Preliminary Product Features", Temic Eurosil, Oct. 13, 1994 (pp. 1-6).
"e5550 Standard R/W Identification IC Preliminary Information", Temic Telefunken Semiconductors, pp. 93-106, Dec. 8, 1995.

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