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US 10,949,627 B2Granted
Systems and methods for non-time smearing detection mechanisms for magnetic cards and devices
AssigneeDynamics Inc.
InventorAllen D. Bowers
Life of this patent
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Abstract
A detection activity of a card may be sensitive to capacitance changes in one or more pads on the card, where a capacitance change detected in a pad during a first time period does not affect a capacitance change detected in the pad during subsequent time period(s). Accordingly, the detection activity may remain sensitive to a faster-moving device with greater accuracy in a determination of position, velocity and/or acceleration of the faster-moving device in relation to the card. A second detection activity may follow a first detection activity, which may increase a probability of a successful communication sequence subsequent to the first detection activity.
Claims33
A method, comprising:
- detecting a presence of a read-head housing of a magnetic stripe reader using a detected capacitance change in a first pad during a first time period of a detection activity;
- detecting a presence of the read-head housing of the magnetic stripe reader using a detected capacitance change in the first pad during a second time period of the detection activity, wherein the detected capacitance change during the first time period does not affect the detected capacitance change during the second time period;
- and
- activating a communication sequence with the magnetic stripe reader in response to at least one of the detections.
1 more element
A method, comprising:
- determining a first parameter using a first pad during a first time period of a detection activity;
- determining a presence of a magnetic stripe reader based on the first parameter;
- determining a second parameter using the first pad during a second time period of the detection activity;
- determining a presence of the magnetic stripe reader based on the second parameter;
- and
- activating a communication sequence with the magnetic stripe reader based on at least one of the first parameter and the second parameter,
- wherein the determining a second parameter is not based on the first parameter, and
- the second parameter is a number of periods of an oscillation signal used to bring a node connected to the first pad to about a voltage threshold level.
5 more elements
A method, comprising:
- determining a first parameter using a first pad during a first time period of a detection activity;
- determining a presence of a magnetic stripe reader based on the first parameter;
- determining a second parameter using the first pad during a second time period of the detection activity;
- determining a presence of the magnetic stripe reader based on the second parameter;
- activating a communication sequence with the magnetic stripe reader based on at least one of the first parameter and the second parameter;
- determining a third parameter using a second pad during a third time period of the detection activity;
- and
- determining a presence of the magnetic stripe reader based on the third parameter,
- wherein the determining a second parameter is not based on the first parameter.
6 more elements
A method, comprising:
- determining a first parameter using a first pad during a first time period of a detection activity;
- determining a presence of a magnetic stripe reader based on the first parameter;
- determining a second parameter using the first pad during a second time period of the detection activity;
- determining a presence of the magnetic stripe reader based on the second parameter;
- activating a communication sequence with the magnetic stripe reader based on at least one of the first parameter and the second parameter;
- determining a third parameter using the first pad during a third time period of the detection activity;
- determining a presence of the magnetic stripe reader based on the third parameter;
- determining a fourth parameter using the first pad during a fourth time period of the detection activity;
- and
- determining a presence of the magnetic stripe reader based on the fourth parameter,
- wherein the determining a second parameter is not based on the first parameter,
- the determining a presence of the magnetic stripe reader based on the second parameter is not based on the third parameter or the fourth parameter, and
- the first time period immediately precedes the second time period, the second time period immediately precedes the third time period, and the third time period immediately precedes the fourth time period.
10 more elements
A method, comprising:
- determining a first parameter using a first pad during a first time period of a detection activity;
- determining a presence of a magnetic stripe reader based on the first parameter;
- determining a second parameter using the first pad during a second time period of the detection activity;
- determining a presence of the magnetic stripe reader based on the second parameter;
- activating a communication sequence with the magnetic stripe reader based on at least one of the first parameter and the second parameter;
- determining a third parameter using the first pad during a third time period of the detection activity;
- and
- determining a presence of the magnetic stripe reader based on the third parameter,
- wherein the determining a second parameter is not based on the first parameter,
- the determining a presence of the magnetic stripe reader based on the second parameter is not based on the third parameter, and
- the determining the presence of the magnetic stripe based on the third parameter is based on the second parameter.
8 more elements
A method, comprising:
- determining a first parameter using a first pad during a first time period of a detection activity;
- determining a presence of a magnetic stripe reader based on the first parameter;
- determining a second parameter using the first pad during a second time period of the detection activity;
- determining a presence of the magnetic stripe reader based on the second parameter;
- activating a communication sequence with the magnetic stripe reader based on at least one of the first parameter and the second parameter;
- determining a third parameter using a second pad during the first time period of the detection activity;
- determining a presence of the magnetic stripe reader based on the third parameter;
- determining a fourth parameter using the second pad during the second time period of the detection activity;
- and
- determining a presence of the magnetic stripe reader based on the fourth parameter,
- wherein the determining a second parameter is not based on the first parameter.
8 more elements
A method, comprising:
- determining a first parameter using a first pad during a first time period of a detection activity;
- determining a presence of a magnetic stripe reader based on the first parameter;
- determining a second parameter using the first pad during a second time period of the detection activity;
- determining a presence of the magnetic stripe reader based on the second parameter;
- activating a communication sequence with the magnetic stripe reader based on at least one of the first parameter and the second parameter;
- wherein the determining a second parameter is not based on the first parameter,
- the first pad is part of a first plurality of pads on a card,
- the card includes a second plurality of pads, and
- the first plurality of pads is separated from the second plurality of pads.
6 more elements
A method, comprising:
- determining a first parameter using a first pad during a first time period of a detection activity;
- determining a presence of a magnetic stripe reader based on the first parameter;
- determining a second parameter using the first pad during a second time period of the detection activity;
- determining a presence of the magnetic stripe reader based on the second parameter;
- and
- activating a communication sequence with the magnetic stripe reader based on at least one of the first parameter and the second parameter,
- wherein the determining a first parameter does not affect the determining a second parameter.
4 more elements
A method, comprising:
- determining a first parameter using a first pad during a first time period of a detection activity;
- determining a presence of a magnetic stripe reader based on the first parameter;
- determining a second parameter using the first pad during a second time period of the detection activity;
- determining a presence of the magnetic stripe reader based on the second parameter;
- and
- activating a communication sequence with the magnetic stripe reader based on at least one of the first parameter and the second parameter,
- wherein the determining a second parameter is independent of the determining a first parameter.
4 more elements
Dependencies are inferred from the claim text.