Electronic credential signal activation systems and methods
First Claim
1. A circuit, comprising:
- a first antenna comprising a first plurality of metal traces disposed in a first coil;
a second antenna comprising a second plurality of metal traces disposed in a second coil, wherein the first antenna and the second antenna are each configured to receive a first signal from an electromagnetic field and generate respective first and second output voltages, and wherein each of the first plurality of metal traces and the second plurality of metal traces are configured to inductively couple to the electromagnetic field, wherein a level of the first output voltage and a level of the second output voltage are related to movement of the first and second antennas through the electromagnetic field;
a first circuit element configured to receive the first output voltage and generate a first response when the level of the first output voltage is at a first value; and
a second circuit element configured to receive the second output voltage and transition to an active state to perform one or more predetermined functions when the level of the second output voltage exceeds a second value.
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Abstract
An circuit includes a first inductive coil and a second inductive coil each including a plurality of metal traces. The first and second inductive coils are each configured to receive a first signal from an electromagnetic field and generate respective first and second output voltages. Each of the first inductive coil and the second inductive coil are configured to inductively couple to the electromagnetic field. A first circuit element is configured to receive the first output voltage and generate a first response at a first power level of the first output voltage. A second circuit element is configured to receive the second output voltage and transition to an active state to perform one or more functions when the second output voltage exceeds a second power level. The first and second power levels are related to movement of the first and second inductive coils through the electromagnetic field.
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Citations
20 Claims
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1. A circuit, comprising:
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a first antenna comprising a first plurality of metal traces disposed in a first coil; a second antenna comprising a second plurality of metal traces disposed in a second coil, wherein the first antenna and the second antenna are each configured to receive a first signal from an electromagnetic field and generate respective first and second output voltages, and wherein each of the first plurality of metal traces and the second plurality of metal traces are configured to inductively couple to the electromagnetic field, wherein a level of the first output voltage and a level of the second output voltage are related to movement of the first and second antennas through the electromagnetic field; a first circuit element configured to receive the first output voltage and generate a first response when the level of the first output voltage is at a first value; and a second circuit element configured to receive the second output voltage and transition to an active state to perform one or more predetermined functions when the level of the second output voltage exceeds a second value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 20)
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9. A circuit, comprising:
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a first inductive coil comprising a first plurality of metal traces; a second inductive coil comprising a second plurality of metal traces, wherein the first inductive coil and the second inductive coil are each configured to receive a first signal from an electromagnetic field and generate respective first and second output voltages, and wherein each of the first plurality of metal traces and the second plurality of metal traces are configured to inductively couple to the electromagnetic field, wherein a level of the first output voltage and a level of the second output voltage are related to movement of the first and second antennas through the electromagnetic field; a first circuit element configured to receive the first output voltage and generate a first response when the level of the first output voltage is at a first value; and a second circuit element configured to receive the second output voltage and transition to an active state to perform one or more predetermined functions when the level of the second output voltage exceeds a second value. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method, comprising:
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moving a first inductive coil comprising a first plurality of metal traces through an electromagnetic field; generating a first output voltage for a first circuit element, wherein the first output voltage is generated by movement of the first inductive coil through the electromagnetic field; generating a first circuit response by the first circuit element when the first output voltage exceeds a first power level; moving a second inductive coil comprising a second plurality of metal traces through the electromagnetic field simultaneously with the first inductive coil; generating a second output voltage for a second circuit element, wherein the second output voltage is related to movement of the second inductive coil through the electromagnetic field; and transitioning the second circuit element to an active state to perform one or more predetermined functions when the second output voltage exceeds a second power level. - View Dependent Claims (17, 18, 19)
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Specification