Beveled Magnetic Stripe Assembly for Flexible Card Data Reliability
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Solution Overview
Problem
Existing magnetic stripe cards and devices face challenges in efficiently communicating dynamic information and maintaining flexibility while reducing magnetic interference and enhancing data communication reliability.
Innovation Solution
A dynamic magnetic stripe communications device with beveled magnetic materials and a shield structure, utilizing a stacked assembly of coils, soft-magnetic and hard-magnetic materials, and a flexible adhesive to enhance electromagnetic field communication and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dynamic magnetic stripe communications device is implemented, then data communication reliability is improved, but device complexity increases
Solution Approach 1:
The electromagnetic generator is constructed as a nested stacked assembly where coils are wrapped around soft-magnetic strips, which are in turn positioned against hard-magnetic strips. This nested configuration integrates multiple functional layers (coils, soft-magnetic material, hard-magnetic material) into a compact unit that maintains reliable magnetic field generation while managing structural complexity through hierarchical organization.
Solution Approach 2:
The magnetic communications device is segmented into distinct functional layers: coils for electromagnetic generation, soft-magnetic strips for field enhancement, hard-magnetic strips for field stabilization, and flexible adhesive for structural integration. This segmentation allows each component to be optimized independently while working together to achieve reliable data communication.
2Productivity
If magnetic materials are added to enhance electromagnetic field communication, then data transmission capabilities are improved, but magnetic interference increases
Solution Approach 1:
Different magnetic materials are positioned in specific locations within the electromagnetic generator: soft-magnetic strips are placed inside the coils where they enhance the electromagnetic field during active transmission, while hard-magnetic strips are positioned outside the coils to provide stable residual magnetism. This localized placement ensures that magnetic enhancement occurs only where needed for data transmission, minimizing unnecessary magnetic interference in other areas.
3Reliability
If a stacked assembly structure is used, then electromagnetic field communication is enhanced, but flexibility is reduced
Solution Approach 1:
A flexible adhesive layer is used to bond the stacked assembly of coils, soft-magnetic strips, and hard-magnetic strips together. This flexible bonding approach allows the rigid magnetic components to be integrated into a structure that can bend and flex, maintaining the card's flexibility while preserving the electromagnetic field communication capabilities of the stacked magnetic assembly.
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 provides reliable and flexible data communication with reduced magnetic interference, enabling efficient interaction with magnetic stripe readers and improved data transmission capabilities.
Implementation Method 1
An coil may be provided that may generate an electromagnetic field when current is conducted through the coil
Implementation Method 2
A magnetic material (e.g., a soft-magnetic material) may be located within the coil, which may enhance the electromagnetic field produced by the coil
Implementation Method 3
A magnetic material (e.g., a hard-magnetic material) may be provided outside of the coil. The magnetic material may produce a magnetic field that may subject an electromagnetic field produced by the coil to a torque
Data Source
AI summary
A flexible card may include a dynamic magnetic stripe communications device having multiple layers, such as an electromagnetic generator, a magnet, and a shield. A shield may form a non-flexible layer within the stack and may bend, but the shield may not be able to stretch or compress. Flexible layers may surround and adhere to the shield such that when the card is flexed, the flexible layers may stretch and compress with the movement of the shield. The dynamic magnetic stripe communications device may include one or more coils. Each coil may contain a material that may be beveled, such that a width at an end portion of the material may be smaller than a width at a middle portion of the material.