System for authentication of products and a magnetic tag utilized therein
AssigneeAdvanced Coding Systems Ltd.
InventorsVladimir Manov, Evgeni Sorkine, Eli Yarkoni
Life of this patent
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Abstract
A magnetic microwire for use in a magnetic tag attachable to a product is provided to enable authentication of the product, as well as the magnetic tag, a detector device and a system for product authentication utilizing the same. The magnetic microwire is a glass-coated amorphous magnetic microwire characterized by a large Barkhausen discontinuity and substantially zero or positive magnetostriction. The microwire is responsive to an external alternating magnetic field generated by the detector device to produce short pulses of magnetic field perturbations.
Claims22
A magnetic microwire for use in a magnetic tag attachable to a product, thereby enabling authentication of the product, wherein the magnetic microwire is a glass-coated amorphous magnetic microwire characterized by a large Barkhausen discontinuity and substantially zero or positive magnetostriction, such that the microwire is responsive to an external alternating magnetic field to produce short pulses of magnetic field perturbations.
A magnetic tag for attaching to a product to enable the authentication of the product, the tag comprising at least one glass-coated amorphous magnetic microwire characterized by a large Barkhausen discontinuity and substantially zero or positive magnetostriction, such that, when the tag is located in a region of an external alternating magnetic field, the at least one microwire is re-magnetized by the magnetic field to produce short pulses of magnetic field perturbations.
A detector device for applying to a magnetic tag attached to a product, the tag being composed of at least one glass-coated amorphous magnetic microwire characterized by a large Barkhausen discontinuity and substantially zero or positive magnetostriction, such that said at least one microwire can be re-magnetized by an alternating magnetic field to produce short pulses of magnetic field perturbations, the detector device comprising:
- a magnetic field source operable to generate the alternating magnetic field to cause the re-magnetization of said at least one glass-coated amorphous magnetic microwire, when the microwire is located in a region of said alternating magnetic field;
- and
- a receiver for receiving said short pulses of magnetic field perturbations, and generating a signal indicative thereof.
A product comprising a tag assembly attached thereto, wherein the tag assembly comprises a magnetic tag comprising at least one glass-coated amorphous magnetic microwire characterized by a large Barkhausen discontinuity and substantially zero or positive magnetostriction, such that, when the tag is located in a region of an external alternating magnetic field, the at least one microwire is re-magnetized by the magnetic field to produce short pulses of magnetic field perturbations.
A system for product authentication, the system comprising:
- a magnetic tag for attaching to a product, the tag comprising at least one glass-coated amorphous magnetic microwire characterized by a large Barkhausen discontinuity and substantially zero or positive magnetostriction, such that said at least one microwire can be re-magnetized by an alternating magnetic field to produce short pulses of magnetic field perturbations;
- a detector device for applying to said tag, the detector device comprising a magnetic field source operable to generate the alternating magnetic field to cause the re-magnetization of said at least one glass-coated amorphous magnetic microwire, when the microwire is located in a region of said alternating magnetic field, and a receiver for receiving said short pulses and generating a signal indicative thereof;
- and
- an indicator utility responsive to the signal generated by the receiver to provide an indication signal
Dependencies are inferred from the claim text.