US 12,272,221 B2
Radio frequency identification (RFID) tag location verification using acousto-magnetic detection
Manuel A. Soto, Lake Worth, FL (US); John Clark, Boynton Beach, FL (US); John A. Allen, Pompano Beach, FL (US); and Adam S. Bergman, Boca Raton, FL (US)
Assigned to Sensormatic Electronics, LLC, Boca Raton, FL (US)
Filed by Sensormatic Electronics, LLC, Boca Raton, FL (US)
Filed on Apr. 18, 2022, as Appl. No. 17/723,254.
Application 17/723,254 is a continuation of application No. 17/005,089, filed on Aug. 27, 2020, granted, now 11,308,780.
Claims priority of provisional application 62/897,958, filed on Sep. 9, 2019.
Claims priority of provisional application 62/894,686, filed on Aug. 30, 2019.
Prior Publication US 2022/0254236 A1, Aug. 11, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G08B 13/24 (2006.01)
CPC G08B 13/2422 (2013.01) [G08B 13/2417 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of electronic article surveillance (EAS), comprising:
transmitting an acousto-magnetic (AM) interrogation signal into an AM interrogation zone of an EAS system, the AM interrogation zone and a wireless communication zone overlapping in a use of two different wireless communication technologies to form a zone of interest, the wireless communication zone employing a wireless communication technology other than AM or radio frequency identification (RFID) such that the AM interrogation signal is configured as a gate function for a first tag to transmit a response signal of the first tag via the wireless communication technology other than AM or RFID only upon detecting the AM interrogation signal; and
indicating, by the EAS system, a presence of the first tag of the EAS system in the zone of interest upon a concurrent detection of both i) the response signal of the first tag via the wireless communication technology and ii) an AM response signal of the first tag in response to the AM interrogation signal.