Method and an assembly for generating a magnetic field and a method of manufacturing an assembly
AssigneeCardlab Aps
InventorFinn NIELSEN
Life of this patent
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Abstract
A credit card shaped element with a dynamic stripe which may be activated or deactivated, where the stripe is formed by a plurality of coils provided along the curve thereof, where the plurality of coils are activated in a sequential manner, where a plurality of proximity sensing coils are provided in series along the curve thereof, where the plurality of coils are formed by one coil contacted at multiple positions along its length by contact pads and where the signals fed to the coils cause an output of a reader coil to output a signals with a minimum slope or where one signal fed to one track has no peaks when the other signal is close to zero.
Claims21
-26. (canceled)
An assembly comprising:
- an outer surface bounded by at least a first and a second edge portion,
- 3-100 sets of coils arranged at least substantially along a predetermined curve at the surface, the curve having a first length and extending between a first and a second points on the surface, the first point being positioned within a first distance of 20% of the first length or less from the first edge portion and the second point being positioned within a second distance of 20% of the first length or less from the second edge portion,
- a controller connected to the coils,
- wherein the coils have symmetry axes at least substantially parallel to a plane of the first surface.
Dependencies are inferred from the claim text.