IMPROVEMENTS IN OR RELATING TO IDENTIFICATION READER SYSTEMS

An electromagnetic identification tag reader which provides an electromagnetic interrogation field to elicit a response from an identification tag. The reader includes an electromagnetic interrogation field controller which modifies the shape of the interrogation field. The shape may be varied over...

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Hauptverfasser: GREENMAN, MURRAY, IRVING, GORDON, ANDERSON, CHRISTOPHER LEWIS
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Sprache:eng ; fre
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creator GREENMAN, MURRAY
IRVING, GORDON
ANDERSON, CHRISTOPHER LEWIS
description An electromagnetic identification tag reader which provides an electromagnetic interrogation field to elicit a response from an identification tag. The reader includes an electromagnetic interrogation field controller which modifies the shape of the interrogation field. The shape may be varied over time and a series of shapes may be provided within a predefined timeframe. L'invention concerne un lecteur d'étiquette d'identification générant un champ d'interrogation électromagnétique afin d'obtenir une réponse d'une étiquette d'identification. Le lecteur comprend une unité de commande de champ d'interrogation électromagnétique pouvant modifier la forme du champ d'interrogation. La forme peut varier dans la durée et une série de formes peut être utilisée dans un cadre temporel prédéfini.
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subjects ALARM SYSTEMS
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
ORDER TELEGRAPHS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
title IMPROVEMENTS IN OR RELATING TO IDENTIFICATION READER SYSTEMS
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