Wireless Charging Control for Touch Input Recognition
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Solution Overview
Problem
Wireless charging technologies face issues such as potential harm to the human body from electromagnetic waves, malfunctions in mobile terminals during charging, and user inconvenience due to interference with device functions like calls and touch inputs.
Innovation Solution
A wireless charging control method and apparatus that differentiate between touch characteristics to recognize user inputs during charging, temporarily stopping or adjusting charging when certain conditions are met, such as during calls or when the device is in proximity to the user's body, to minimize electromagnetic wave exposure and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If wireless charging is performed using electromagnetic induction or resonance scheme, then power transmission capability is improved, but harmful influence on human body increases
Solution Approach 1:
The patent implements dynamic control of wireless charging by detecting user proximity through sensors and adjusting or stopping power transmission accordingly. The system transitions between different charging states (normal charging, paused charging, stopped charging) based on real-time detection of whether the device is in the user's pocket or being carried, thereby reducing electromagnetic exposure when the user is nearby while maintaining charging capability when the device is left unattended.
2Ease of operation
If wireless charging is performed, then charging convenience is improved, but touch input recognition accuracy deteriorates
Solution Approach 1:
The patent introduces an intermediary detection mechanism that uses sensor data (accelerometer, proximity sensor, touch sensor) as a mediator to distinguish between genuine user touch inputs and electromagnetic interference patterns. The controller analyzes the characteristics of detected signals to determine whether they represent actual user interactions or charging-induced noise, thereby maintaining accurate touch recognition during wireless charging.
3Productivity
If wireless charging is performed, then charging speed is improved, but device malfunction risk increases
Solution Approach 1:
The patent implements a feedback control system that continuously monitors device state during wireless charging and adjusts charging parameters accordingly. The controller receives feedback from various sensors detecting device position, user proximity, and operational status, then modulates the wireless charging power transmission to prevent overheating, excessive electromagnetic exposure, or interference with device functions, thereby maintaining charging speed while preventing malfunctions.
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 reduces the impact of wireless charging on human health, prevents malfunctions, and enhances user convenience by optimizing device operations during charging, including automatic mode switching for calls and improving touch input recognition.
Implementation Method 1
an electromagnetic induction scheme using a coil and a resonance scheme has emerged
Implementation Method 2
The resonance scheme corresponds to a scheme using a frequency resonance technology between the transmission apparatus and the reception apparatus
Implementation Method 3
a touchscreen display... configured to detect a touch contact with respect to the touchscreen display
Data Source
AI summary
A portable communication device includes a touchscreen display, a wireless charging circuit, and one or more processors operatively coupled with the wireless charging circuit and configured to detect a touch contact with respect to the touchscreen display, while wireless charging is not performed using the wireless charging circuit, allow recognition of the touch contact having a first touch characteristic and a second touch characteristic as a user input with respect to the touchscreen display, and while the wireless charging is performed using the wireless charging circuit, allow recognition of the touch contact having the first touch characteristic as the user input with respect to the touchscreen display and refrain from recognizing the touch contact having the second touch characteristic as the user input with respect to the touchscreen display.