Electronic article surveillance deactivator with multiple...

Details Electronic article surveillance deactivator with multiple... Electronic article surveillance deactivator with multiple...

G - Physics

08

B

G08B 13/24 (2006.01)

Patent

CA 2731818

A method and system for preventing simultaneous deactivation of multiple electronic article surveillance ("EAS") tags. An RF pulse is transmitted within an EAS interrogation zone to induce a response from at least one EAS tag placed within the interrogation zone. The response of the at least one EAS tag is received. A presence of more than one EAS tag is determined by evaluating a frequency response curve corresponding to the response.

La présente invention concerne un procédé et un système pour empêcher la désactivation simultanée détiquettes multiples de surveillance électronique darticles (SEA). Une impulsion RF est transmise dans une zone dinterrogation SEA pour provoquer une réponse de la part dau moins une étiquette SEA placée à lintérieur de la zone dinterrogation. La réponse de la/des étiquettes SEA est reçue. La présence de plusieurs étiquettes SEA est déterminée en évaluant une courbe de réponse en fréquence correspondant à la réponse.

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