Checkpoint Systems, Inc.

Harry Oung

Kefeng Zeng

Nimesh Shah

Bogdan Sima

John Peter Gillard

David Ivins

Nathaniel Cabigao Lacsamana

Nathaniel C Lacsamana

John P Gillard

This invention relates to dynamically controlled, electronic article surveillance (EAS) systems whereby an array of antenna elements is digitally phased and actively driven for concurrent transmission, and digitally phased and combined in the receiver unit to improve detection. In particular, the individual frequency and phase of the plurality of the transmit/receive signals are rapidly varied to allow for automated manipulation (steering) of the transmit field pattern and receive field sensitivity. The invention achieves the following features via means of digital phasing and dynamic computer control: sufficient far-field cancellation, null-free detection and uncompromised detection performance regardless of tag's orientation while using single transmission drivers to drive entire antenna structures, whether loop antenna or ferrite core antenna, using a phase coupler, thereby allowing more efficient system operation or additional features such as deactivator antenna operation.

Phase coupler for rotating fields

This invention relates to dynamically controlled, electronic article surveillance (EAS) systems whereby an array of antenna elements is digitally phased and actively driven for concurrent transmission, and digitally phased and combined in the receiver unit to improve security tag detection. In particular, the individual frequency and phase of the plurality of the transmit/receive signals are rapidly varied to allow for automated manipulation (steering) of the transmit field pattern and receive field sensitivity. It is the object of this invention to achieve the following features via means of digital phasing and dynamic computer control: sufficient far-field cancellation, null-free detection and uncompromised detection performance regardless of tag's orientation.

Dynamic EAS detection system and method

An antitheft security system and method using networked pedestals for monitoring, and reporting data relating to, merchandise, having security tags coupled to or embedded therein, leaving or entering a business establishment and alerting business establishment personnel when a theft may be occurring. The system and method collect and communicate security tag data and associated peripheral device data to a remote server for analysis.

Comprehensive theft security system

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Cherry Hill, NJ, United States of America

Harry Oung