Method and system to negate interference from adjacent...

Details Method and system to negate interference from adjacent... Method and system to negate interference from adjacent...

G - Physics

08

B

G08B 13/24 (2006.01)

Patent

CA 2724456

A method and electronic article surveillance ("EAS") system reduce interference. The EAS system includes a detection zone. At least one reference pattern of transmission windows for an interfering EAS system is provided. The reference pattern indicates a sequence of time slots for which the interfering EAS system is transmitting. A sample pattern of signals is received. Each signal has a corresponding amplitude. The received sample pattern is compared to the at least one reference pattern. Responsive to determining that the received sample pattern matches the at least one reference pattern, the at least one reference pattern is used to trim samples received during receive windows corresponding to the time slots for which the interfering EAS system is transmitting.

Un procédé et un système électronique de surveillance d'article (« EAS ») réduisent une interférence. Le système EAS comprend une zone de détection. Au moins un motif de référence de fenêtres démission pour un système EAS interférant est fourni. Le motif de référence indique une séquence de tranches de temps pendant lesquelles le système EAS interférant émet. Un motif échantillon de signaux est reçu. Chaque signal a une amplitude correspondante. Le motif échantillon reçu est comparé audit motif de référence. En réponse à la détermination dune correspondance entre le motif échantillon reçu et ledit motif de référence, ledit motif de référence est utilisé pour retirer des échantillons reçus pendant des fenêtres de réception correspondant aux tranches de temps pendant lesquelles le système EAS interférant émet.

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