Systems and methods for radio frequency identification enabled deactivation of acousto-magnetic ferrite based marker
AssigneeSensormatic Electronics Corporation
InventorsAdam S. Bergman, Manuel Soto, Ronald B. Easter
Life of this patent
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Abstract
Systems and methods for operating a marker. The method comprising: receiving, by a Radio Frequency Identification (“RFID”) element of the marker, an RFID deactivation signal transmitted from an external device; and responsive to the RFID deactivation signal, supplying power from the RFID element to a detuner element so that the detuner element switches from a first state to a second state. The marker's resonant frequency is changed to a first value that falls outside of an Electronic Article Surveillance (“EAS”) systems operating frequency range when the detuner element switches from the first state to the second state.
Claims20
A method for operating a marker, comprising:
- enabling operations of an active Radio Frequency Identification (“RFID”) element by supplying power from an internal energy storage device of the marker to the RFID element, where the internal energy storage device is exclusive of the RFID element;
- receiving, by the active RFID element, an RFID deactivation signal including an RFID deactivation command transmitted from an external device;
- and
- responsive to the RFID deactivation command, supplying power from the active RFID element to a detuner element so that the detuner element switches from a first state to a second state, the detuner element electrically connected between the active RFID element and a passive Acousto-Magnetic circuit of the marker;
- wherein the internal energy storage device and active RFID element are separate from the passive Acousto-Magnetic circuit, and the passive Acousto-Magnetic circuit resonant frequency is changed to a first value that falls outside of an Electronic Article Surveillance (“EAS”) system's operating frequency range when the detuner element switches from the first state to the second state.
A marker, comprising:
- an Acousto-Magnetic circuit;
- an energy storage device configured to enable operations of a Radio Frequency Identification (“RFID”) element by supplying power to the RFID element, the energy storage device being exclusive of the RFID element;
- the RFID element configured to receive an RFID deactivation signal including an RFID deactivation command transmitted from an external device and supply power to a detuner element in response to the RFID deactivation command;
- and
- the detuner element electronically connected between the RFID element and the Acousto-Magnetic circuit, and configured to switch from a first state to a second state when power is supplied from the RFID element;
- wherein the energy storage device and the RFID element are separate from the Acousto-Magnetic circuit, and the Acoust-Magnetic circuit resonant frequency is changed to a first value that falls outside of an Electronic Article Surveillance (“EAS”) systems operating frequency range when the detuner element switches from the first state to the second state.
Dependencies are inferred from the claim text.