Sensormatic Electronics Corporation

Tyco Fire + Security Gmbh

Harry E. Watkins

Kevin Lynch

Frank Drucker

Sylvie R. Morin

Harry E Watkins

Richard Loyd Copeland

Hubert A Patterson

Brent F Balch

Sylvie R Morin

Mart Martinson

John J Clark

David Buchanan Fallin

Scott Alan Tribbey

Jeffrey Thomas Oakes

William R Accolla

David L Roberson

Christopher B Plonsky

Kevin D Romer

Mark D Krom

Marco A Paez

William Matthew Rider

Jeffery T Oakes

William Karl Burkholder

Kevin Romer

A method according to one embodiment may include detecting an activated electronic article surveillance (EAS) tag in an interrogation zone, and reading at least one radio frequency identification (RFID) tag in response to the detecting of the activated EAS tag in the interrogation zone to investigate a cause of the EAS tag in said interrogation zone. A method according to another embodiment may include detecting a condition representative of an activated RFID tag in a controlled area, and taking corrective action to prevent removal of the activated RFID tag from the controlled area.

Alarm investigation using RFID

An integrated electronic article surveillance (EAS) and people counting system including an EAS system, a people counting system, and an alarm management unit. The alarm management unit accepts the EAS data signal from the EAS system and a people count signal from the people counting system for facilitating correlation of EAS and people count data. A method of monitoring a passageway and an alarm management unit associated with an integrated system are also provided. There is also provided a people counting system for determining a direction of travel of people including first and second people detection devices and a controller. The controller provides an output representative of a direction of travel in response to the outputs of the first and second people detection devices.

Integrated electronic article surveillance and people counting system

A user management interface for interaction, monitoring and control of an EAS system. A user accessible input is provided in the interface for actuation by a user. A generation assembly is responsive to the input and generates signals for interacting with the EAS system. A receiver at the interface receives signals from the EAS system and provides indications with respect thereto.

User management interface for EAS system

An EAS system in which a transmitter alternately drives first and second antennas with the same coded message signal in its entirety. The antennas, in turn, transmit first and second signals each containing the coded message signal into respective first and second partially overlapping parts of an interrogation zone. Also disclosed is an antenna structure comprised of a plurality of loops extending one after the other and successive ones of which are of opposite phase. One of the loops circumscribes an area which is smaller than each of the other loops to realize reduced coupling to adjacent structures.

EAS system loop antenna having three loops of different area

In an EAS system a transmitter alternately drives first and second antennas with the same coded message signal in its entirety. The antennas, in turn, transmit first and second signals each containing the coded message signal into respective first and second partially overlapping parts of an interrogation zone. Also disclosed is an antenna structure comprised of a plurality of loops extending one after the other and successive ones of which are of opposite phase. One of the loops circumscribes an area which is smaller than each of the other loops to realize reduced coupling to adjacent structures.

EAS system with alternating on/off transmitter operation and loop antenna

A method and apparatus for determining the amplitude of a first magnetic field at a first fundamental frequency in a zone in which a second magnetic field is able to be present wherein first and second transmissions of a magnetic field at the fundamental frequency and different phases is carried out at different times, the field in the zone is detected for each transmission and the detected fields are processed to determine the magnitude of the first magnetic field.

Method and apparatus for determining the magnitude of a field in the

A magnetic article surveillance system utilizing microcomputer control and unique time domain and frequency domain information gathering channels whose information is processed by the microcomputer via preselected time domain and frequency domain criteria.

Electronic article surveillance system

A magnetic article surveillance system in which surveillance is carried out by operating the system in first and second different modes of a magnetic transmitting and receiver means in order to make a determination as to the presence of an article in the zone.

Multi-mode electronic article surveillance system

A control arrangement both interrelates the frequency of transmitted signals to an interfering frequency and effects received signal processing also with relation to the interfering frequency in reaching enhanced insensitivity to undesired content of received signals. In particular respect of interference arising in an EAS system in relation to the local power frequency, the invention looks to a control arrangement which both interrelates the frequency of the transmitted signals to the local power frequency and effects received signal processing with relation to the local power frequency in reaching enhanced insensitivity to undesired content of received signals.

Interfering signal rejection circuitry and electronic article

Electronic article surveillance system employing time domain and/or

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Boca Raton, FL, United States of America

Harry E Watkins