Electronic Device EM Signal Detection MST Communication Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices face performance degradation and signal distortion in magnetic field communication due to distance and coupling environment issues, leading to potential hardware damage and power consumption problems, especially when insufficient information is available about external devices.
Innovation Solution
An electronic device equipped with an EM sensor and an MST communication module that transmits a predetermined MST signal based on an obtained EM signal from an external device, minimizing power consumption and enhancing security by only transmitting the signal when in close proximity to the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If magnetic field communication is performed using magnetic induction scheme, then wireless charging and payment functions can be provided, but performance degradation and signal distortion occur due to distance and coupling environment issues
Solution Approach 1:
The electronic device performs preliminary detection of the external device's electromagnetic signal characteristics before initiating magnetic field communication. This allows the device to acquire information about the external device's coupling environment and adjust communication parameters in advance, preventing signal distortion and performance degradation during actual communication.
Solution Approach 2:
The system dynamically adjusts magnetic field communication parameters such as frequency, power, and modulation depth based on the detected electromagnetic signal characteristics of the external device. This parameter optimization compensates for distance and coupling environment variations, maintaining signal quality and communication reliability.
2Productivity
If magnetic field communication is initiated before approaching the external device, then communication can be executed, but power consumption increases and security risks arise
Solution Approach 1:
The electronic device performs preliminary electromagnetic signal detection before initiating full magnetic field communication. This preliminary action allows the system to verify the presence and characteristics of the external device, ensuring that communication is only initiated when appropriate, thus avoiding unnecessary power consumption.
Solution Approach 2:
The system continuously monitors electromagnetic signal characteristics during the approach process and provides feedback to control the initiation and termination of magnetic field communication. This feedback mechanism ensures communication is executed only when the external device is in the appropriate position, optimizing power usage while maintaining communication productivity.
3Ease of operation
If magnetic field communication is performed with insufficient information about external device, then communication can be established, but hardware damage may occur
Solution Approach 1:
The electronic device performs preliminary detection of the external device's electromagnetic signal characteristics, including frequency, amplitude, and waveform patterns, before establishing magnetic field communication. This preliminary information gathering allows the system to assess compatibility and adjust parameters to prevent hardware damage while maintaining ease of communication establishment.
Solution Approach 2:
The system takes preliminary protective measures by detecting and analyzing the external device's electromagnetic characteristics before full communication begins. Based on this analysis, the system pre-adjusts communication parameters and implements protective control strategies to prevent potential hardware damage from incompatible or excessive signals.
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
This solution improves the reliability and security of magnetic field communication by ensuring signals are only transmitted when necessary, reducing power consumption and preventing potential hardware damage from signal distortion.
Implementation Method 1
a first sensor configured to obtain an electromagnetic (EM) signal from an external device
Implementation Method 2
Magnetic field communication can be, for example, implemented through a magnetic induction scheme of switching the direction of an electric current flowing in a transmission coil, to generate a magnetic flux and induce an electric current in a reception coil
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
An electronic device is provided. The electronic device includes a first sensor configured to obtain an electromagnetic (EM) signal from an external device, a first communication module configured to provide a magnetic stripe transmission (MST) signal, a processor, and a memory coupled with the processor, wherein the memory is configured to store instructions which, upon execution, instruct the processor to control the first communication module to transmit, to the external device, the MST signal which is predetermined corresponding to the external device based on the obtained EM signal.