Sensormatic Electronics Corporation

Fadi E Ayoub

Brent F Balch

Thomas James Frederick

Michael A Zampini

David Buchanan Fallin

William R Accolla

Steven W Embling

William Jeffreys

Stephen W Embling

Ronald Alterio

Steven Embling

Automatic tuning of an EAS antenna pedestal without the use of special tools or advanced training is provided. The capacitance of the antenna circuit is adjusted to tune the resonant frequency to the desired frequency. Measurement of the current level is used to validate that the antenna is resonant at the desired frequency. If the current level indicates that the antenna is not resonant at the specified frequency, LEDs located on a capacitor tuning board light to indicate where jumpers should be placed to add or remove capacitance from the circuit. Alternately, the capacitance values can be electronically added or removed from the circuit.

Intelligent power pack assisted pedestal tuning for electronic article surveillance

An arrangement for improving the operation of an analog to digital converter (A/D), which can form part of an integrated circuit, the A/D converter being coupled to a reference voltage and having a plurality of input pins associated therewith comprises: a resistor divider having a plurality of resistors coupled in series, the resistor divider having an upper node coupled to a source of voltage to be converted, having a lower node coupled to a source of reference potential and having a plurality of intermediate nodes; and, each of the upper intermediate nodes being coupled to a respective one of the input pins of the A/D converter. The A/D converter can have enhanced resolution and/or an extended dynamic range when the voltage level being tested is divided arid the reference voltage is reduced. A corresponding method comprises the steps of: successively scaling down a voltage to be converted to a series of stepped down voltage levels; applying the successively stepped down voltage levels to respective ones of the input pins; and, sequentially scanning and acquiring a plurality of scaled A/D converter values from the input pins.

Analog to digital converters with extended dynamic range

An EAS central station has a number of input/output ports each for interfacing with a different personality local station. Hardware equipment and software programming of the central station have parts associated with the different personality local stations and a central processing unit selects the part of the hardware equipment and software programming associated with a local station.

EAS system with common control station for different personality local

Growing community of inventors

Boca Raton, FL, United States of America

Fadi E Ayoub