Cross-Device Interaction via Magnetic Field Detection
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Solution Overview
Problem
Current methods for cross-device interaction, such as using NFC tags, are limited in flexibility and require specific NFC functions, making them inconvenient for scenarios where different contact postures between electronic devices are needed for data transmission or function extension.
Innovation Solution
A device interaction method that determines the relative location and posture of electronic devices using UWB or Bluetooth positioning, gyro, and acceleration sensors, allowing for various contact postures to trigger interactions like data transmission, display screen extension, and operation region extension without the need for NFC.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If NFC tags are used for cross-device interaction, then data transmission and function extension can be achieved, but the devices must have NFC functions which limits adaptability
Solution Approach 1:
The patent uses magnetic field detection as a universal interaction mechanism that works across different device types without requiring NFC functionality. Any electronic device with a magnetometer can participate in the interaction, making the system universally applicable to smartphones, tablets, wearables, and other electronic devices regardless of their specific capabilities
2Reliability
If NFC tags are used for cross-device interaction, then trust relationship can be established, but the implementation requires contact between NFC tags which reduces ease of operation
Solution Approach 1:
The patent replaces the mechanical contact requirement of NFC tags with a magnetic field-based detection system. The first electronic device detects the approach and contact posture of the second device through magnetic field changes detected by the magnetometer, eliminating the need for physical tag contact while maintaining reliable device identification and interaction initiation
3Extent of automation
If NFC tags are used for cross-device interaction, then service can be started through contact, but the system complexity increases due to requiring NFC functionality
Solution Approach 1:
The system automatically initiates interaction services based on detected contact postures without requiring users to manually activate NFC or select interaction modes. The magnetometer continuously monitors for approaching devices, automatically detects contact events and postures, and triggers appropriate services (data transfer, screen sharing, etc.) based on the detected configuration, making the system self-serve and reducing user burden
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 flexible and convenient interaction between electronic devices based on different contact postures, allowing for data sharing, screen extension, and operation region extension without requiring NFC functionality, enhancing usability in various scenarios.
Implementation Method 1
magnetometer data indicating that the second electronic device approaches the first electronic device, and contact posture data indicating contact between the first electronic device and the second electronic device
Data Source
AI summary
The method is applied to a first electronic device and includes: determining interactive service between the first electronic device and a second electronic device; when the interactive service is a first type, in response to a drag operation on a first object on a first interface of a first application running in the first electronic device, sending data of the first object to the second electronic device to display the first object on a second interface of a second application running in the second electronic device; when the interactive service is a second type, displaying a first subinterface of a third application running in the first electronic device; and sending data of a second subinterface of the third application to the second electronic device to display the second subinterface on the second electronic device.