Method and apparatus for providing real time mutable credit card information
US-9218596-B2 · Dec 22, 2015 · US
Circuits and systems for low power magnetic secure transmission
US2019332909A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019332909-A1 |
| Application number | US-201916510498-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 12, 2019 |
| Priority date | Aug 29, 2016 |
| Publication date | Oct 31, 2019 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
According to another embodiment, a system includes a driver circuit that drives a first output and a second output; a coil coupled between the first output and the second output such that the driver circuit drives current through the coil in response to control signals; and a programmable slew circuit coupled to the driver circuit. In some embodiments, a switch is coupled between the first output and the coil. In some embodiments an over-voltage protection circuit is coupled to protect the driver circuit.
First claim
Opening claim text (preview).
What is claimed is: 1 - 22 . (canceled) 23 . A system, comprising a driver circuit that drives a first output and a second output; a coil coupled between the first output and the second output such that the driver circuit drives current through the coil in response to control signals; and a programmable slew circuit coupled to the driver circuit. 24 . The system of claim 23 , further including a switch coupled between the first output and the coil. 25 . The system of claim 24 , wherein the switch receives the control signal and couples the first output to the coil in response to the control signal, an opposite side of the coil being coupled to the second output. 26 . The system of claim 23 , wherein the driver circuit includes a first transistor that couples a first voltage to the first output in response to a first signal; a second transistor that couples the first voltage to the second output in response to a second signal; a third transistor that couples the first output to ground in response to a first slew signal from the programmable slew circuit; and a fourth transistor that couples the second output to ground in response to a second slew signal from the programmable slew circuit. 27 . The system of claim 26 , wherein the first voltage is provided from a reverse boost circuit powered by a battery. 28 . The system of claim 23 , further including an overvoltage protection circuit configured to protect the driver circuit.
Assignees
Inventors
Classifications
the inductive antenna being a coil · CPC title
using at least one antenna particularly designed for interrogating the wireless record carriers (antennas in general H01Q1/22) · CPC title
RFID or NFC payments by means of M-devices · CPC title
sensing magnetic material by relative movement detecting flux changes without altering its magnetised state · CPC title
- G06K19/06206Primary
the magnetic marking being emulated · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2019332909A1 cover?
- According to another embodiment, a system includes a driver circuit that drives a first output and a second output; a coil coupled between the first output and the second output such that the driver circuit drives current through the coil in response to control signals; and a programmable slew circuit coupled to the driver circuit. In some embodiments, a switch is coupled between the first outp…
- Who is the assignee on this patent?
- Integrated Device Tech
- What technology area does this patent fall under?
- Primary CPC classification G06K19/06206. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Oct 31 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).