Sensormatic Electronics Corporation

Tyco Fire + Security Gmbh

Other

University of Central Florida Research Foundation Inc

Tyco Fire & Security Services Gmbh

Vacuumschmelze Gmbh

Ming-ren Lian

Ming-Ren Lian

Hubert A Patterson

Richard Loyd Copeland

Gary Mark Shafer

Kevin Robert Coffey

Wing Kei Ho

Robert C O'Handley

Nen-Chin Liu

David N Lambeth

Dennis Michael Gadonniex

Manuel A Soto

Giselher Herzer

Brent F Balch

John J Clark

Larry Burgess

Thomas Hartmann

Douglas A Narlow

Thomas P Solaski

Justin Stewart

John C Ford

Mark D Alexis

George A Reynolds

Kevin D Romer

William Johnson, Ii

Eugenio Morgado

Karen Bellum Bomber

Richard Tellshow

Robert Simone

Stephen W Embling

Edward Di Carlo

Jimmy Cantey

Marcus Christopher

George A Reynolds, Jr

Ravi Todi

Kalpathy Sundaram

Parag Gadkari

Norm Hansen

Ronald Joseph Davis

Nen-chin Liu

Chaitali China

William Iii Johnson

Kevin Romer

Jr George Anthony Reynolds

A method and system for producing an electromagnetic field that exhibits a strong near field that is sufficient to deactivate an electronic article surveillance, EAS, tag and a weak far field that is insufficient to deactivate the EAS tag are disclosed. According to one embodiment, two half-wavelength dipoles spaced apart by about a half-wavelength are excited by oppositely phased signals.

Electronic article surveillance tag deactivation

A tag having a magnetic clamp for use in securing an item in order to prevent the unauthorized removal of the item from, for example, a retail store. The magnetic tag includes an attachment element that secures the item to the tag. A clamp having a locking region secures the attachment element such that the item cannot be separated from the tag. A keyed magnetic element on the clamp includes one or more hard magnets, where each hard magnet has either an outward-facing north or south polarity. By applying a magnetic force to the magnets, the locking region moves away from the attachment element thus allowing the item to be removed from the tag. The arrangement of magnets operates as a 'key' and only a detacher unit with an identical magnetic pattern can apply the requisite magnetic force to the magnets to disengage the clamp from the attachment element to allow removal of the tag from the item.

Security system tag magnetic clutch and method

A method for detecting metal using an electronic article surveillance ('EAS') system. The EAS system includes a transmitter and a receiver. An EAS interrogation signal is transmitted to establish the interrogation zone. The EAS interrogation signal is used to detect EAS markers and metal objects within the interrogation zone. The EAS signal is received and a metal object present in the interrogation zone is detected during a metal detection cycle. The metal object is detected based upon perturbations in the received EAS interrogation signal. The metal detection cycle is periodically interspersed with at least one EAS detection cycle.

Electronic article surveillance system with metal detection capability and method therefor

Disclosed are a system and method to detect RFID tags in electronic article surveillance systems using frequency mixing. The system includes an RFID module that includes an energy coupler to receive transmitted energy that includes a first signal at a first frequency and a second signal at a second frequency, and a mixing element to mix the first and second signals, to generate a third signal at a third frequency, and the energy coupler to transmit the third signal to an EAS detection system. Other embodiments are described and claimed.

Techniques for detecting RFID tags in electronic article surveillance systems using frequency mixing

A combination Electronic Article Surveillance/Radio Frequency Identification ('EAS/RFID') tag and method and system for deactivating said combination EAS/RFID tags without the need to physically contact the tag with a deactivation device. The EAS/RFID tag replaces the conventional diode with a non-linear device such as a capacitor with a given breakdown voltage threshold. Inducing a predetermined voltage across the capacitor results in destruction of the capacitor rendering the EAS/RFID tag undetectable in the interrogation systems.

Method and system for deactivation of combination EAS/RFID tags

A magnetic detacher has a core magnet and a ring magnet. The core magnet has a body with a top and bottom surface, and produces a first magnetic field. The ring magnet defines a cavity. The ring magnet has a body with a top and bottom and produces a second magnetic field. The ring magnet is axially aligned with the core magnet such that the first magnetic field opposes the second magnetic field along the bodies and enhances it within the cavity. The top surface of the core magnet is separated from the bottom surface of the ring magnet by a predetermined distance thereby producing a resultant magnetic field having a first resultant field strength at a specific position greater than a second resultant field strength produced at the same position when the top surface of the core magnet abuts the bottom surface of the ring magnet.

Optimization of the field profile on a high field strength magnetic detacher

An Electronic Article Surveillance ('EAS') tag and method and system for deactivating EAS tags without the need to physically contact the tag with a deactivation device. The EAS tag replaces the conventional diode with a non-linear device such as a metal-oxide-semiconductor ('MOS') capacitor with a given breakdown voltage threshold. Inducing a predetermined voltage across the MOS capacitor results in destruction of the MOS capacitor rendering the EAS tag undetectable in the EAS interrogation system.

Metal oxide semiconductor device for use in UHF electronic article surveillance systems

An integrated circuit package may include a substrate and an integrated circuit. The substrate may include at least one region, and a first magnetic material associated with the at least one region. The integrated circuit may have a second magnetic material associated therewith. The second magnetic material may be attracted to the first magnetic material to coupled the integrated circuit to the at least one region of the substrate. The IC package may be utilized in an RFID tag of an RFID system. An associated method for assembling an integrated circuit to a substrate is also provided.

Magnetic self-assembly for integrated circuit packages

A near field antenna is disclosed which is configured to read an RFID label such that a localized electric E field emitted by the antenna at an operating wavelength resides substantially within a zone defined by the near field. The localized E field directs a current distribution along an effective length of the antenna corresponding to a half-wave to a full-wave structure.

RFID near field microstrip antenna

A conduction structure for infrared microbolometer sensors and a method for sensing electromagnetic radiation may be provided. The microbolometer may include a first conductor layer and a second conductor layer. The microbolometer further may include a bolometer layer between the first conductor layer and the second conductor layer.

Conduction structure for infrared microbolometer sensors

A method and apparatus for a frequency-division marker are described.

Frequency-division marker for an electronic article surveillance system

Method and apparatus for a frequency divider using variable capacitance are described.

Frequency divider with variable capacitance

A method and apparatus to detect an external source are described.

Method and apparatus to detect an external source

A method and apparatus to enhance magnetoimpedance effect using magnetomechanical resonance are described.

Enhancing magneto-impedance modulation using magnetomechanical resonance

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Boca Raton, FL, United States of America

Ming-Ren Lian