Methods and apparatuses for determining frequency response of a security tag
AssigneeSensormatic Electronics Corporation
InventorsAdam S. Bergman, Steve E. Trivelpiece
Life of this patent
Estimating the term…
Abstract
Aspects of the present disclosure include methods, systems, and non-transitory computer readable media for transmitting at least one incident radio frequency identification (RFID) signal to a RFID tag attached to a merchandize item, receiving at least one reflected RFID signal from the RFID tag, determining a frequency response of the RFID tag based on the at least one reflected RFID signal, comparing the frequency response to a plurality of baseline frequency responses, and determining a state of the RFID tag based on the comparing.
Claims24
A method for determining state information by a reader, comprising:
- transmitting at least one incident radio frequency identification (RFID) signal to a RFID tag attached to a merchandize item;
- receiving at least one reflected RFID signal from the RFID tag;
- determining a frequency response of the RFID tag based on the at least one reflected RFID signal;
- comparing the frequency response to a plurality of baseline frequency responses;
- and
- determining a state of the RFID tag based on the comparing, wherein determining the state of the RFID tag comprises determining that the RFID tag is within a threshold distance from a person.
A radio frequency identification (RFID) reader, comprising:
- a memory including instructions;
- and
- a processor configured to execute the instructions that cause the RFID reader to:
- transmit at least one incident radio frequency identification (RFID) signal to a RFID tag attached to a merchandize item;
- receive at least one reflected RFID signal from the RFID tag;
- determine a frequency response of the RFID tag based on the at least one reflected RFID signal;
- compare the frequency response to a plurality of baseline frequency responses;
- and
- determine a state of the RFID tag based on the comparing, wherein determining the state of the RFID tag comprises determining that the RFID tag is within a threshold distance from a person.
A non-transitory computer readable medium comprising instructions that, when executed by a processor of a radio frequency identification (RFID) reader, cause the processor to:
- transmit at least one incident radio frequency identification (RFID) signal to a RFID tag attached to a merchandize item;
- receive at least one reflected RFID signal from the RFID tag;
- determine a frequency response of the RFID tag based on the at least one reflected RFID signal;
- compare the frequency response to a plurality of baseline frequency responses;
- and
- determine a state of the RFID tag based on the comparing, wherein the instructions for determining the state of the RFID tag comprises instructions for determining that the RFID tag is within a threshold distance from a person.
Dependencies are inferred from the claim text.