Error recovery in RFID reader systems
First Claim
1. An RFID reader system for outputting a code of an RFID tag from waves received by a reader antenna, comprising:
- input circuitry operable to decode from a first one of the waves a first version of the code; and
an operational processing block operable to determine whether a fidelity criterion regarding the first version is met, and if so to output the first version of the code, else to derive from the first version a final version of the code that is different from the first version, and to output the final version instead of the first version.
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Abstract
RFID systems, devices, software and methods are adapted for receiving from an RFID tag at least waves that communicate at least a first version of its code. An output tag code is output that is the same as the first version, if a fidelity criterion is met regarding the first version. If not met, the output tag code is instead a final version that is reconstructed from the first version, and also from any additionally optionally subsequently received versions. In some embodiments, an error recovery block includes a subcomponent fidelity criterion checking block that can determine whether the fidelity criterion is met, and a code reconstruction block that can derive the final version.
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Citations
79 Claims
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1. An RFID reader system for outputting a code of an RFID tag from waves received by a reader antenna, comprising:
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input circuitry operable to decode from a first one of the waves a first version of the code; and an operational processing block operable to determine whether a fidelity criterion regarding the first version is met, and if so to output the first version of the code, else to derive from the first version a final version of the code that is different from the first version, and to output the final version instead of the first version. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for an RFID reader system to output a code of a first RFID tag, comprising:
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receiving from the tag a first wave; decoding from the first wave a first version of the code; determining whether a fidelity criterion regarding the first version is met; and if so, outputting the first version of the code, else if not, deriving from the first version a final version of the code that is different from the first version, and outputting the final version instead of the first version. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. An RFID reader system comprising:
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receiving means for receiving from an RFID tag a first wave; decoding means for decoding from the first wave a first version of a code of the tag; determining means for determining whether a fidelity criterion regarding the first version is met; deriving means for deriving from the first version a final version of the code that is different from the first version, and outputting means for outputting the first version of the code if the fidelity criterion is met regarding the first version, and the final version instead of the first version otherwise. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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65. An article comprising:
- a memory having instructions stored thereon, in which when the instructions are executed by an operational processing block, they result in;
determining whether a fidelity criterion is met regarding a first version of a tag code decoded from a first wave received from an RFID tag; and if so, outputting the first version of the code, else if not, deriving from the first version a final version of the code that is different from the first version, and outputting the final version instead of the first version. - View Dependent Claims (66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79)
- a memory having instructions stored thereon, in which when the instructions are executed by an operational processing block, they result in;
Specification