G - Physics – 08 – B
Patent
G - Physics
08
B
G08B 13/22 (2006.01) G08B 13/24 (2006.01)
Patent
CA 2217583
An electronic article surveillance (EAS) system includes an asynchronous noise suppression adaptive filter which removes asynchronous interference from the signal of interest with minimum distortion of the transients emitted when a sensitized tag is interrogated. The system also includes a synchronous noise suppression filter which removes interrogation synchronous noise from the signal of interest. The resulting EAS system increases the likelihood that a sensitized tag will be detected when one is present and reduces the occurence of false alarms.
Système de surveillance électronique d'articles incluant un filtre adaptatif d'élimination du bruit asynchrone qui élimine les réponses asynchrones du signal d'intérêt avec une distorsion minimale des transitoires émis lorsqu'une étiquette sensibilisée est interrogée. Ledit système comporte également un filtre d'élimination du bruit synchrone qui élimine le bruit synchrone d'interrogation du signal d'intérêt. Le système de surveillance électronique d'articles ainsi obtenu augmente la probabilité qu'une étiquette sensibilisée soit détectée lorsqu'une est présente et réduit l'occurrence de fausses alertes.
Nelson John E.
Rude Michael J.
Tao Samuel H.
Smart & Biggar
The Minnesota Mining & Manufacturing Company
LandOfFree
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