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 that involve receiving, by a Radio Frequency Identification (“RFID”) element of the marker, an RFID deactivation signal; and responsive to the RFID deactivation signal, supplying power to a detuner element of the marker 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:
- receiving, by an active radio frequency identification (RFID) element of a marker, an RFID deactivation signal;
- and
- responsive to the RFID deactivation signal, supplying power to a detuner element of the marker so that the detuner element switches from a first state to a second state,
- wherein a resonant frequency of a passive Acousto-Magnetic circuit of the marker is changed to a first value outside of an operating frequency range when the detuner element switches from the first state to the second state.
A marker, comprising:
- an Acousto-Magnetic circuit;
- a detuner element;
- and
- a Radio Frequency Identification (“RFID”) element configured to receive a RFID deactivation signal from an external device and supply power to the detuner element in response to the RFID deactivation signal,
- wherein:
- the detuner element is 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,
- the RFID element is separate from the Acousto-Magnetic circuit, and
- a resonant frequency of the Acousto-Magnetic circuit is changed to a first value outside of an operating frequency range when the detuner element switches from the first state to the second state.
Dependencies are inferred from the claim text.