Patent · US Active

Method of de-activating and activating an electronic article surveillance (EAS) device, and an EAS device

US8749357B2 · kind B2 · utility

0Cited by

6References

11Claims

0Family size

Assignee

NXP B.V. · NL

Inventors

Franz Amtmann · Graz, AT
Mario Steiner · Tobelbad, AT
Heinze Elzinga

Key dates

Filing date	Feb 3, 2011
Grant date	Jun 10, 2014
Priority date	—
Expiry date	Apr 16, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/51
WIPO fieldControl
WIPO sectorInstruments

Abstract

A device for use in electronic article surveillance EAS is disclosed which comprises a resonant circuit, typically designed for 8.2 MHz operation, in addition to a transponder, such as RFID, for non-contact communication with a communication station. The RFID transponder can provide a signal to detune the resonant circuit to disable the EAS and optionally another signal to tune or retune the resonant circuit to enable or re-enable the EAS. The detuning and tuning or retuning may preferably be achieved using phase change memory material, configured as a programmable switch having two states with different resistances.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.