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.
Claims14
A method of generating a magnetic signal using one or more transmitting coils, the method comprising:
- outputting a magnetic signal which, over time, has a sequence of opposite peaks, which signal has, apart from in a vicinity of the peak values, having a predetermined minimum slope of 10% multiplied by a signal value difference between peak values of two, opposite neighbouring peaks divided by the time elapsed between the outputting of the two peak values.
An assembly, comprising:
- one or more coils;
- and
- a processor connected to the one or more coils, where the processor is configured to output a voltage and/or current signal to the one or more coils to cause the one or more coils to output a magnetic signal, the voltage and/or current signal having, over time, a sequence of opposite voltage/current peaks, which signal has, apart from in a vicinity of the peak values, having a predetermined minimum slope of 10% multiplied by a signal voltage/current difference between peak values of two, opposite neighbouring voltage/current peaks divided by the time elapsed between the outputting of the two peak values.
A method of transferring a magnetic signal, the method comprising:
- one or more transmission coils outputting the magnetic signal which, over time, has a sequence of opposite peaks;
- and
- a receiving coil receiving the magnetic signal and outputting an output signal which, over time, has a sequence of opposite peaks and, apart from in a vicinity of the peak values, a predetermined minimum slope of 10% multiplied by a signal value difference between peak values of two, opposite neighbouring peaks divided by the time elapsed between the outputting of the two peak values.
An assembly, comprising:
- a receiving coil;
- one or more transmitting coils;
- and
- a processor connected to the one or more transmitting coils,
- wherein the processor is configured to output a voltage and/or current signal to the transmitting coils to cause the transmitting coils to output a magnetic signal, the voltage and/or current signal having, over time, a sequence of opposite voltage/current peaks,
- wherein the receiving coil is configured to receive the magnetic signal and output an output signal which has a number of opposite voltage/current peaks and, apart from in a vicinity of the peak values, a predetermined minimum slope of 10% multiplied by a signal voltage/current difference between peak values of two, opposite neighbouring voltage/current peaks divided by the time elapsed between the outputting of the two peak values.
Dependencies are inferred from the claim text.