Dynamic Magnetic Stripe Device for Extended Communication
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Solution Overview
Problem
Magnetic cards and devices face challenges in efficiently communicating data to magnetic stripe readers, particularly in maintaining reliable communication over an extended period and adapting to varying read head speeds and positions, which affects data transfer efficiency and reliability.
Innovation Solution
A dynamic magnetic stripe communications device with an extended length, integrated into a card, uses a multiple-layer board with coils for each track of information and sensors to detect read head proximity and velocity, adjusting bit rate and bit period dynamically to optimize communication parameters for prolonged data transfer and improve reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a dynamic magnetic stripe communications device with extended length is used, then communication duration is improved, but device complexity increases
Solution Approach 1:
The magnetic communications device is divided into multiple functional segments including a magnetic encoder section, magnetic emulator section, and multiple coils for different communication modes. This segmentation allows the extended device to maintain manageable complexity by organizing functions into modular sections that can be independently controlled and optimized.
Solution Approach 2:
The device employs dynamic parameter adjustment where communication parameters such as bit rate, bit period, and communication mode are continuously adapted based on detected read head velocity and position. This dynamic behavior allows the extended device to optimize communication reliability across varying operational conditions without requiring static over-engineering.
2Reliability
If communication parameters are dynamically adjusted based on read head velocity and position, then data transfer reliability is improved, but device complexity increases
Solution Approach 1:
The device incorporates sensors that detect read head velocity and position, feeding this information back to the control logic. The control system uses this feedback to dynamically adjust communication parameters including bit rate, bit period, and communication mode selection, thereby maintaining reliable data transfer across varying operational conditions without requiring manual intervention or complex external control systems.
3Adaptability or versatility
If multiple coils are provided for multiple tracks of information, then communication versatility is improved, but device complexity increases
Solution Approach 1:
The magnetic communications device is designed with multiple coils that can operate in different communication modes (magnetic encoder mode, magnetic emulator mode, serial communication, parallel communication). Each coil can serve multiple functions depending on the operational mode selected, allowing the device to communicate with various types of magnetic stripe readers using different protocols and tracks, thereby achieving versatility without requiring separate dedicated components for each function.
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 enables extended communication duration and enhanced data transfer reliability by dynamically adjusting communication parameters based on read head position and velocity, ensuring efficient data exchange even with varying card reader conditions.
Implementation Method 1
A coil for each track of information that is to be communicated by the dynamic magnetic stripe communications device may then be provided by including wire segments on each layer and interconnecting the wire segments through layer interconnections to create a coil
Implementation Method 2
A magnetic emulator, for example, may be provided to generate electromagnetic fields that directly communicate data to a read-head of a magnetic stripe reader
Implementation Method 3
A magnetic encoder, for example, may be utilized to modify information that is located on a magnetic medium, such that a magnetic stripe reader may then be utilized to read the modified magnetic information from the magnetic medium
Data Source
AI summary
A card may utilize an extended dynamic magnetic stripe communications device that may extend to approximately the full length of a card. A processor of a card may detect movement (e.g., position, velocity, acceleration and movement direction) of a read head in relation to movement of the card while the card is being swiped or otherwise moved across a read head of a magnetic card reader. Based on certain parameters (e.g., length characteristics of an extended dynamic magnetic stripe communications device as may be received from a memory of the card, initially detected read head position, and read head velocity) a processor of the card may change communicated bit parameters (e.g., bit period) so that a total number of data bits may be communicated by the card to the read head while the read head remains within a communication distance of the extended dynamic magnetic stripe communications device.