Electronic stripe cards
First Claim
Patent Images
1. An electronic stripe card comprising:
- a conductive path having first portions oriented to carry current in a “
z”
direction and having second portions oriented to carry current in a “
-z”
direction, wherein the first and second portions are separated by a sufficient distance to allow a magnetic field created by the first portions to mimic a magnetic track without interference from a magnetic field created by the second portions.
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Accused Products
Abstract
An electronic stripe card senses when it is being swiped passed a read head, and drives a conductive path to mimic a magnetic card track. Multiple conductive paths may be driven in an interleaved fashion one after another. The card may include multiple swipe sensors to detect when to start and stop driving the conductive paths. The conductive paths may include traces on a top metal layer and bottom metal layer without magnetic material therebetween.
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Citations
23 Claims
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1. An electronic stripe card comprising:
a conductive path having first portions oriented to carry current in a “
z”
direction and having second portions oriented to carry current in a “
-z”
direction, wherein the first and second portions are separated by a sufficient distance to allow a magnetic field created by the first portions to mimic a magnetic track without interference from a magnetic field created by the second portions.
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4. An electronic stripe card comprising:
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a top metal layer and a bottom metal layer without magnetic material therebetween; and
a conductive path alternating between the top metal layer and the bottom metal layer, wherein the conductive path on the top metal layer is remote from the conductive path on the bottom metal layer to reduce magnetic flux interference. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electronic stripe card comprising:
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a first conductive path to emit a first magnetic field to mimic a first track in a magnetic card;
a second conductive path to emit a second magnetic field to mimic a second track in a magnetic card;
a swipe sensor to detect when the electronic stripe card is swiped past a read head; and
an interleaved track driver circuit responsive to the swipe sensor, to drive the first and second conductive paths one at a time. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method comprising:
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detecting that a swipe sensor has been swiped past a read head; and
driving a first conductive path to mimic a first magnetic track and driving a second conductive path to mimic a second magnetic track, wherein the driving of the first and second conductive paths is interleaved. - View Dependent Claims (20, 21, 22, 23)
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Specification