Method and an assembly for generating a magnetic field and a method of manufacturing an assembly
First Claim
1. A method of generating a particular magnetic signal using one or more transmitting coils, the method comprising:
- outputting a magnetic signal which, over time, has a sequence of opposite peaks, wherein the magnetic signal has, apart from magnetic signal portions on either side of each of the opposite peaks and within 10% of a time duration between two opposite, neighbouring peaks of the sequence of opposite peaks, a predetermined minimum slope of 10% multiplied by a magnetic signal value difference between peak values of the two, opposite neighbouring peaks divided by a time elapsed between outputting the two, opposite neighbouring peaks.
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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.
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Citations
18 Claims
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1. A method of generating a particular magnetic signal using one or more transmitting coils, the method comprising:
outputting a magnetic signal which, over time, has a sequence of opposite peaks, wherein the magnetic signal has, apart from magnetic signal portions on either side of each of the opposite peaks and within 10% of a time duration between two opposite, neighbouring peaks of the sequence of opposite peaks, a predetermined minimum slope of 10% multiplied by a magnetic signal value difference between peak values of the two, opposite neighbouring peaks divided by a time elapsed between outputting the two, opposite neighbouring peaks. - View Dependent Claims (2, 3, 4, 5)
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6. An assembly, comprising:
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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, wherein the voltage and/or current signal has, apart from voltage/current signal portions on either side of each of the opposite voltage/current peaks and within 10% of a time duration between two opposite, neighbouring peaks of the sequence of opposite voltage/current peaks, a predetermined minimum slope of 10% multiplied by a voltage and/or current signal voltage/current difference between peak values of the two, opposite neighbouring voltage/current peaks divided by a time elapsed between outputting the two, opposite neighbouring voltage/current peaks. - View Dependent Claims (7, 8, 9)
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10. A method of transferring a magnetic signal, the method comprising:
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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 output signal portions on either side of each of the opposite peaks and within 10% of a time duration between two opposite, neighbouring peaks of the sequence of opposite peaks, a predetermined minimum slope of 10% multiplied by an output signal value difference between peak values of the two, opposite neighbouring peaks divided by a time elapsed between outputting the two opposite, neighbouring peaks. - View Dependent Claims (11, 12, 13, 14)
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15. An assembly, comprising:
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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 separate sequence of opposite voltage/current peaks and, apart from output signal portions on either side of each of the opposite peaks and within 10% of a time duration between two opposite, neighbouring peaks of the separate sequence of opposite voltage/current peaks, a predetermined minimum slope of 10% multiplied by an output signal voltage/current difference between peak values of the two, opposite neighbouring voltage/current peaks divided by a time elapsed between outputting of the two opposite, neighbouring peaks. - View Dependent Claims (16, 17, 18)
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Specification