Validating radio frequency identification (RFID) tag alarm events
AssigneeSensormatic Electronics Corporation
InventorJohn A. Allen
Life of this patent
Estimating the term…
Abstract
In an Electronic Article Surveillance (EAS), a radio frequency identification (RFID) subsystem of an EAS system, can detect a presence of an RFID tag in an RFID interrogation zone associated with a boundary of a controlled area. The EAS system can first determine that the RFID tag is not authorized to leave the controlled area across the boundary. A radar subsystem of the EAS system can second determine, within a first window of time around the first detecting, whether an object in motion is associated with the boundary. The EAS system can alarm based upon both determining that the RFID tag is not authorized to leave the controlled area and determining that the object in motion is associated with the boundary.
Claims14
A method of electronic article surveillance (EAS), comprising:
- first detecting, by a radio frequency identification (RFID) subsystem of an EAS system, a presence of an RFID tag in an RFID interrogation zone associated with a boundary of a controlled area;
- first determining, by the EAS system, that the RFID tag is not authorized to leave the controlled area across the boundary;
- second determining, by a radar subsystem of the EAS system and within a first window of time around the first detecting, whether an object in motion is associated with the boundary;
- and
- alarming, by the EAS system, based upon both the determining that the RFID tag is not authorized to leave the controlled area and the determining that the object in motion is associated with the boundary.
An electronic article surveillance (EAS) system, comprising:
- a radio frequency identification (RFID) subsystem operative to first detect, by a radio frequency identification (RFID) subsystem of an EAS system, a presence of an RFID tag in an RFID interrogation zone associated with a boundary of a controlled area;
- a determining subsystem operative to first determine that the RFID tag is not authorized to leave the controlled area across the boundary;
- and
- a radar subsystem operative to second determine, within a first window of time around the first detecting, whether an object in motion is associated with the boundary;
- wherein the EAS system is further operative to alarm based upon both the determining that the RFID tag is not authorized to leave the controlled area and the determining that the object in motion is associated with the boundary.
Dependencies are inferred from the claim text.