Patent ID: 11893446
Assignee: IMPINJ, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A Radio Frequency Identification (RFID) integrated circuit (IC) configured to indicate a corrupted identifier, the RFID IC comprising:
an antenna port;
a transceiver coupled to the antenna port;
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 processor coupled to the transceiver and the memory, the processor configured to:
upon the IC extracting an operating power from an RF signal received on the antenna port, retrieve the first identifier and the check code from the memory;
determine that the check code does not correspond to the first identifier and that the first identifier is therefore corrupted;
adjust protocol control information associated with the first identifier, wherein an unadjusted protocol control information indicates that the first identifier has a nonzero length and the adjusted protocol control information indicates that the first identifier has a zero length; and
upon subsequently receiving, via the transceiver, a command requesting the first identifier, transmit, using the transceiver, a reply to the received command, the reply including at least the adjusted protocol control information.