Magnetic Emulator Drive Circuit for Stripe Reader Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing magnetic stripe readers face errors and inefficiencies in reading barcodes and communicating data due to limitations in current technologies, particularly in dynamic environments and with diverse data formats.
Innovation Solution
A dynamic magnetic communications device, including a magnetic emulator with an inductor coil and closed-loop linear analog drive circuit, generates precise electromagnetic fields to communicate data serially to magnetic stripe readers, enhanced by capacitive touch sensors and multiple output devices like RFIDs and IC chips, enabling accurate and reliable data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a magnetic emulator generates electromagnetic fields to communicate data serially to a magnetic stripe reader, then data communication capability is improved, but reading accuracy and reliability deteriorate due to errors in existing magnetic stripe readers
Solution Approach 1:
The patent implements a closed-loop linear analog drive circuit that uses feedback to precisely control the current flow through the magnetic emulator's coil. This feedback mechanism ensures accurate generation of electromagnetic fields, directly addressing the reading accuracy problems by maintaining precise control over the magnetic field characteristics during data communication.
Solution Approach 2:
The patent employs a drive circuit that fluctuates the amount of current through the coil according to a frequency/double-frequency encoding algorithm. By dynamically changing current parameters (amplitude, frequency), the system encodes data accurately while the closed-loop control maintains field precision, resolving the contradiction between data communication capability and reading accuracy.
2Manufacturing precision
If a closed loop linear analog drive circuit is used to precisely define current flow, then manufacturing precision and reliability are improved, but device complexity increases
Solution Approach 1:
The closed-loop linear analog drive circuit uses feedback to automatically regulate current flow, achieving precise control without requiring complex external control mechanisms. The feedback mechanism inherently manages the complexity by using the system's own output to control its input, simplifying the overall device architecture while maintaining manufacturing precision.
3Adaptability or versatility
If multiple output devices (RFID, IC chip, magnetic emulator) are used to communicate data simultaneously, then adaptability and functionality are improved, but device complexity increases
Solution Approach 1:
The patent integrates multiple output devices (RFID, IC chip, magnetic emulator) into a single card system that can communicate through any of these modalities. The central processor coordinates all devices, making them universally accessible and interchangeable for different communication scenarios, thereby improving adaptability while managing complexity through unified control.
Solution Approach 2:
The system divides communication functionality into separate modular devices (RFID, IC chip, magnetic emulator), each handling specific communication tasks. This segmentation allows the system to achieve multi-modal data transmission while maintaining manageable complexity through modular architecture, where each component can be independently optimized and controlled.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances the accuracy and reliability of data communication with magnetic stripe readers, reduces errors, and extends functionality through multi-modal data transmission, improving user interaction and compatibility with various card technologies.
Implementation Method 1
A magnetic emulator with an inductor coil and closed-loop linear analog drive circuit generates precise electromagnetic fields to communicate data serially to magnetic stripe readers
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Dynamic magnetic stripe communications devices are provided as magnetic stripe emulators. A magnetic stripe emulator may include a coil. Drive circuits may be coupled to this coil in order to produce electromagnetic fields from the coil operable to communicate with a magnetic stripe reader.