Touch Terminal NFC Interference Control via Peripheral Shutdown
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Solution Overview
Problem
Existing near-field communication (NFC) technologies in touch terminals face interference from peripherals, such as LCDs, which affects communication quality and signal strength, especially when metallic materials are used in device shells, leading to alignment issues and signal deterioration.
Innovation Solution
A method for touch terminals that involves sending a wireless communication request through a near-field electric field, detecting proximity, and sending an interference source peripherals closing signal to the main control chip to minimize interference, allowing for stable NFC connections by using the touch screen's drive and sense lines as communication channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If interference source peripherals are closed during near-field communication, then communication quality is improved, but device functionality is reduced
Solution Approach 1:
The patent implements dynamic control of interference source peripherals by detecting NFC communication states and adjusting peripheral operation modes accordingly. The system transitions peripherals between active and inactive states based on real-time communication needs, achieving adaptive optimization of both communication quality and device functionality.
Solution Approach 2:
The patent performs preliminary detection of NFC communication states before executing peripheral control actions. By detecting the presence of NFC signals and determining communication states in advance, the system prepares appropriate peripheral configurations, preventing interference before it occurs and ensuring smooth communication.
2Illumination intensity
If the screen is turned on during near-field communication, then user interface visibility is improved, but communication interference increases
Solution Approach 1:
The patent implements dynamic control of the display screen by detecting NFC communication states and adjusting screen brightness or activation status accordingly. When NFC communication is detected, the system dynamically adjusts screen settings to minimize electromagnetic interference while maintaining user interface accessibility when communication is not active.
3Reliability
If additional antenna is added for near-field communication, then communication capability is improved, but device complexity increases
Solution Approach 1:
The patent makes existing touch screen drive lines and sense lines serve dual functions: both touch detection and NFC communication. By multiplexing these existing components, the system achieves NFC communication capability without adding separate dedicated antenna structures, thereby reducing device complexity while maintaining communication functionality.
Solution Approach 2:
The patent merges NFC communication functions with existing touch screen components by using the same drive lines and sense lines for both touch detection and NFC signal transmission. This consolidation eliminates the need for separate antenna structures and reduces overall device complexity.
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 approach effectively reduces interference from peripherals, enhancing communication quality and reliability by ensuring that NFC signals are not disrupted, even in environments with potential interference sources, thereby improving user experience and maintaining signal integrity.
Implementation Method 1
the second touch terminal receiving a wireless communication request of establishment of the near-field sent by first touch terminal through the near-field electric field
Implementation Method 2
the first touch terminal and the second terminal establishing a wireless connection by touching near-field electric field
Data Source
AI summary
The disclosure provides a touch terminal, a near-field communication method and system of the touch terminal. The method includes: a second touch terminal receiving a wireless communication request of establishment of the near-field sent by first touch terminal through the near-field electric field; the second touch terminal sending a interference source peripherals closing signal to a main control chip, and informing the main control chip to close interference source peripherals; the first touch terminal and the second terminal establishing a wireless connection by touching near-field electric field, and exchange data. The disclosure enables to make the communication environment purified and guarantee the quality of communication.