Audio Module MST Switching for Thinner Mobile Payment Hardware
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The use of magnetic sheets in electronic devices for MST payments increases material costs and device thickness, and metal rear structures complicate antenna design by limiting magnetic field signal radiation.
Innovation Solution
An electronic device incorporates an audio module with a speaker and receiver, a codec circuit, an MST circuit, and a processor that controls the switch unit to connect the MST circuit to the speaker or receiver for MST signal emission, eliminating the need for a separate MST antenna.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnetic sheet is used to improve MST signal transmission, then card information transmission efficiency is improved, but material cost increases and device thickness increases
Solution Approach 1:
The patent combines the MST antenna function with the existing speaker or receiver components. The speaker/receiver serves dual purposes: audio output and MST signal transmission. This eliminates the need for a separate magnetic sheet or dedicated MST antenna, thereby reducing material cost and device thickness while maintaining MST communication capability
Solution Approach 2:
The speaker or receiver is designed to perform multiple functions: it acts as both an audio output device and an MST antenna. By making the audio component universal, the patent avoids adding extra components specifically for MST functionality, thus reducing overall device complexity and thickness
2Reliability
If a magnetic sheet is used to improve antenna characteristics, then card information transmission efficiency is improved, but material cost increases
Solution Approach 1:
The patent merges the MST antenna functionality with existing audio components (speaker/receiver), eliminating the need for separate magnetic sheets. This integration reduces material cost while maintaining adequate antenna characteristics for MST communication
Solution Approach 2:
The existing speaker or receiver components serve the dual purpose of audio output and MST signal transmission. By utilizing components that are already present in the device for an additional function, the patent avoids the need for extra materials and reduces overall cost
3Strength
If the electronic device has a metal rear structure, then device strength is improved, but magnetic field signal radiation is limited and antenna design becomes more difficult
Solution Approach 1:
The patent applies local quality by creating a nonmetal segmented portion specifically at the location where the speaker or receiver is positioned. This localized nonmetal area allows magnetic field signal radiation without requiring changes to the overall metal rear structure, thus maintaining device strength while enabling effective antenna operation
Solution Approach 2:
The nonmetal segmented portion acts as an intermediary that allows magnetic field signals to pass through the metal rear structure. It serves as a transmission window that reconciles the conflict between metal structure strength and magnetic field radiation requirements
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 enables MST communication without a separate antenna, reducing material costs and device thickness while simplifying design, allowing for efficient MST signal radiation.
Implementation Method 1
emit an MST signal for a payment by using at least one of the speaker and the receiver, which is connected to the MST circuit
Data Source
AI summary
According to various embodiment of the present invention, an electronic device comprises: an audio module including a speaker and a receiver; a codec circuit for transmitting and receiving an audio signal; a magnetic secure transmission (MST) circuit; a switch unit; a memory; and a processor electrically connected with the audio module, the codec circuit, the MST circuit, the switch unit, and the memory, wherein, if a function for requesting a payment is executed when the codec circuit and the audio module are connected with each other, the processor can be configured to: control the switch unit so as to connect the MST circuit with the speaker and/or the receiver, which are included in the audio module; and transmit the MST signal for the payment by using the speaker and/or the receiver, which are connected with the MST circuit. In addition to various embodiments disclosed in the present invention, other various embodiments are possible.