G - Physics – 01 – V
Patent
G - Physics
01
V
G01V 15/00 (2006.01) G01S 13/74 (2006.01) G08B 13/00 (2006.01) G08B 13/22 (2006.01) G08B 13/24 (2006.01)
Patent
CA 2228893
A multi-bit electronic article surveillance marker (10'') includes an antenna circuit (22) and is powered by an interrogation field generated by EAS detection equipment (8) and received by the marker's antenna circuit (22). The marker generates a multi-bit signal by selectively disturbing the interrogation field. The disturbances may be created by selectively short circuiting the marker's antenna circuit (22). All of the marker circuitry, including a coil (14'') that is part of the antenna circuitry (22), may be provided as circuit elements formed on a semiconductor integrated circuit substrate (20).
L'invention concerne un dispositif de repérage (10") d'un système électronique de surveillance d'articles à plusieurs bits. Ce dispositif comprend un circuit d'antenne (22) et est alimenté par un champ d'interrogation généré par un matériel de détection de système électronique de surveillance d'articles (8) et reçu par le circuit d'antenne (22). Le dispositif de repérage génère un signal à plusieurs bits en perturbant, de manière sélective, le champ d'interrogation. Les perturbations peuvent être créées en provoquant, de manière sélective, un court-circuit du circuit d'antenne (22) du dispositif de repérage. La totalité du circuit, y compris une bobine (14") qui fait partie du circuit d'antenne (22) peut être fournie sous forme d'éléments de circuits formés sur un substrat (20) de circuits intégrés à semi-conducteurs.
Ferguson David B.
Frederick Richard
Giles Olin S.
Patterson Hubert A.
Sensormatic Electronics Corporation
Smart & Biggar
LandOfFree
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