In 2008 i worked on a 3 day Think Tank at SAP Research. The result of our postprocessing was an US and China patent named “RADIO FREQUENCY IDENTIFICATION READING BY USING ERROR CORRECTING CODES ON SETS OF TAGS” which i want to indroduce here shortly:

A method and a system are described for improved reading of Radio Frequency Identification (RFID) tags using correcting codes on sets of electronic tags. In one embodiment, information is requested from each of a set of electronic tags. The information includes an identification code and a portion of a codeword, the codeword contains a coded message with identification codes of all tags in the set. The information is received from a subset of the set of tags. Portions of the codeword from the received tag information of the subset of tags are assembled. The coded message is constructed from the assembled portions of the codeword. Finally, individually receiving information from a remaining set of the tags in the set of tags. In one embodiment, the system includes a set of electronic tags and a reading device to request and receive information from each of the set of electronic tags. The information includes an identification code and a portion of a codeword, the codeword contains a coded message with identification codes of all tags in the set. In addition, the system includes a decoding component to decode a number of assembled portions of the codeword and construct the coded message with the identification codes of all tags in the set. An enterprise system processes the received information from all tags in the set.

The entire patent could be found here. An entire PDF with illustrations can be found here.

United States Patent Application: 20100045444

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