Server-Based Magnetic Contact Detection for NFC-Free Terminals
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Solution Overview
Problem
Existing mobile communication systems, particularly those utilizing Near Field Communication (NFC) technology, face limitations in enabling communication between devices without both possessing an NFC chip, leading to instances where terminals do not recognize proximity or contact with each other due to the presence or absence of NFC chips.
Innovation Solution
A method involving a server that receives state information data from terminals based on external magnetic force measurements, including orientation and position, to identify and confirm contact between terminals, allowing for communication even if one device lacks an NFC chip by synchronizing clocks and comparing data to determine proximity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If NFC technology is used for short-distance communication, then communication between devices can be enabled, but both devices must be equipped with NFC chips which limits compatibility
Solution Approach 1:
The patent introduces a server as an intermediary that receives state information from terminals and determines contact status. This mediator enables communication between devices without requiring direct NFC interaction, allowing devices with or without NFC chips to communicate through the server's coordination of magnetic field data and state information exchange.
Solution Approach 2:
The patent replaces the mechanical requirement of NFC chip presence with a magnetic field-based detection system. By using magnetic sensors to detect changes in the magnetic field caused by terminal proximity or contact, the system substitutes the need for specialized NFC hardware with a more universally available magnetic sensing mechanism.
2Adaptability or versatility
If magnetic field-based contact identification is implemented, then compatibility between devices with and without NFC chips is improved, but the system requires additional sensors and processing
Solution Approach 1:
The patent makes the magnetic sensor serve multiple functions: it detects both the presence of another terminal and provides state information for contact determination. This multi-functional use of existing sensors reduces the need for additional specialized components while maintaining enhanced compatibility across different device types.
Solution Approach 2:
The terminal devices use their own magnetic sensors to generate state information about their environment and contact status. Each device independently measures magnetic field changes and generates its own state data, reducing the processing burden on external systems while maintaining system-wide compatibility.
3Measurement precision
If state information data is exchanged between terminals and server, then contact identification accuracy is improved, but data transmission time and processing load increase
Solution Approach 1:
The patent performs preliminary measurements of magnetic field state information locally at each terminal before transmission to the server. By pre-processing and generating state information data at the source, the system reduces the amount of raw data that needs to be transmitted and processed centrally, thereby decreasing transmission time while maintaining measurement precision.
Solution Approach 2:
The system transmits only the essential state information data derived from magnetic field measurements rather than all possible sensor data. This selective transmission of partial information sufficient for contact identification reduces data transmission overhead and processing requirements while maintaining adequate accuracy for the intended purpose.
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
Enables effective identification and confirmation of contact between terminals, facilitating communication and data exchange without requiring both devices to have NFC chips, thus expanding compatibility and functionality in mobile communication systems.
Implementation Method 1
measuring an external magnetic force of a first terminal
Implementation Method 2
inducing the first terminal to measure the orientation of the first terminal by the external magnetic force information outputted by the step of measuring the external magnetic force by the first terminal
Data Source
AI summary
Provided are a method of identifying contact between terminals, and a computer program and an application for executing the method. The method for identifying contact between terminals according to this invention includes the server receiving from a first terminal a first state information data of a first terminal based on information about an external magnetic force of the first terminal generated by a first terminal; receiving, by the server, second state information data of the second terminal based on the information about the external magnetic force of the second terminal generated in the second terminal from the second terminal; determining whether a difference between a time when the first state information data is generated and a time when the second state information data is generated is within a preset time; and the step of transmitting a message to at least one of the first terminal and the second terminal according to the determination by the server.