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Magnetic stripe data transmission system and method for reliable data transmission and low power consumption

A technology of magnetic stripe data and electromagnetic force, applied in transmission systems, near-field transmission systems, data processing applications, etc., can solve problems such as poor energy efficiency and large impact on power systems

Active Publication Date: 2018-02-06
ALPHA & OMEGA SEMICON INT LP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

energy efficiency is worse
Great impact on the power system

Method used

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  • Magnetic stripe data transmission system and method for reliable data transmission and low power consumption
  • Magnetic stripe data transmission system and method for reliable data transmission and low power consumption
  • Magnetic stripe data transmission system and method for reliable data transmission and low power consumption

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Embodiment Construction

[0047] An MST driver and a method for driving the MST driver are presented. Using pulse width modulation (PWM) technology to control the current slope of the transmission signal, it is used for low-power and reliable transmission of the transmission signal of the MST driver. Configure MST drives to transfer magnetic stripe data with high or low pulses. The MST driver includes a pair of high-side switches consisting of a first switch and a second switch, and a pair of low-side switches consisting of a third switch and a fourth switch. Configure the switches in a full bridge configuration, connected to a voltage source and ground. The inductor coil is connected to the output of the full bridge configuration of the switches.

[0048] The MST driver also includes configuring a switch driver to drive the pair of low-side and high-side switches using PWM under current slope control. During the rising and falling part of the load current, through the inductance coil, a recognizabl...

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PUM

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Abstract

A magnetic stripe data transmission (MST) driver and a method for driving the MST are disclosed. The MST driver is configured to transmit magnetic strip data comprising of streams of pulses. The MST driver comprises a pair of high side switches and a pair of low side switches. The pair of high side switches comprises a first switch and a second switch. The pair of low side switches comprises a third switch and a fourth switch. The first, second, third and fourth switches are arranged in a full bridge type configuration connected across a voltage source and a ground. An inductive coil is connected across outputs of the full bridge type configuration of the switches. The MST driver includes a switch driver configured to drive the pair of low side switches and the pair of high side switches under current slope control using pulse width modulation. The driven load current has a rising portion and a falling portion through the inductive coil in a forward direction or in a reverse directionwith programmable load current rising and falling slopes to induce a recognizable back electromagnetic force at a receiver emulating the magnetic strip data during the load current rising and fallingportions and to reduce power loss during time periods without signal transmission.

Description

technical field [0001] The present invention mainly relates to a system and method for directly transmitting magnetic stripe data to ensure reliable transmission of magnetic stripe data with low power consumption. More specifically, the present invention uses pulse width modulation in a magnetic stripe data drive. The method actuates the switches of the magnetic stripe data driver and controls the current ramp of the signal generated in the magnetic stripe transmission driver for low power, reliable data transmission. Background technique [0002] Magnetic stripe data transmission or magnetic secure transmission (MST) technology is that it is similar to the magnetic signal of the magnetic stripe data of traditional payment cards, which is transmitted from the transmitter to the receiver by an MST driver. The transmitter can be a host device such as a smartphone. The receiver may be a card reader of a payment terminal. The magnetic signal simulates the magnetic stripe data...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/08G06K19/06G06K19/073
CPCG06K7/086G06K19/06206G06K19/07345G06K7/08H04L1/0011G06Q20/34G06Q20/3278H04B5/72
Inventor 李承柱
Owner ALPHA & OMEGA SEMICON INT LP
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