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US 12,299,521 B1Granted
RFID integrated circuit identifier self-check
AssigneeImpinj, Inc.
InventorChristopher J. Diorio
Life of this patent
Estimating the term…
Abstract
A Radio Frequency Identification (RFID) tag IC stores an identifier and a check code. The IC determines whether the stored identifier is corrupted by comparing it to the check code. If the stored identifier does not correspond to the check code then the IC may terminate operation or indicate an error. The IC may also reconstruct the correct identifier from the check code.
Claims20
A Radio Frequency Identification (RFID) integrated circuit (IC) comprising:
- a memory storing a first identifier and a check code, wherein the check code is based on and used to check a correctness of the first identifier;
- and
- a processing block coupled to the memory and configured to:
- retrieve the first identifier and the check code from the memory;
- determine that the retrieved check code does not correspond to the first identifier and that the first identifier is therefore corrupted by at least one of:
- comparing the retrieved check code to the first identifier;
- and
- computing a check code from the first identifier and comparing the retrieved check code with the computed check code;
- and
- in response to the determination, terminate operation of the RFID IC.
7 more elements
A Radio Frequency Identification (RFID) integrated circuit (IC) comprising:
- a memory storing a first code and a check code, wherein the check code is based on and used to check a correctness of the first code;
- and
- a processing block coupled to the memory and configured to:
- retrieve the first code and the check code from the memory;
- determine that the retrieved check code does not correspond to the first code and that the first code is therefore corrupted by at least one of:
- comparing the retrieved check code to the first code;
- and
- computing a check code from the first code and comparing the retrieved check code with the computed check code;
- and
- in response to the determination, terminate operation of the RFID IC.
7 more elements
A method for a Radio Frequency Identification (RFID) integrated circuit (IC), the method comprising:
- retrieving, from an IC memory, a first code and a check code, wherein the check code is based on and used to check a correctness of the first code;
- determining that the retrieved check code does not correspond to the first code and that at least one of the check code and the first code is therefore corrupted by at least one of:
- comparing the retrieved check code to the first code;
- and
- computing a check code from the first code and comparing the retrieved check code with the computed check code;
- and
- in response to the determination, terminating operation of the RFID IC.
4 more elements
Dependencies are inferred from the claim text.