Wireless Power Charging Control for Camera Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless power systems face challenges in coexisting with camera operations due to electromagnetic interference, particularly when the camera is in use concurrently with wireless power transfer, especially in high-fidelity modes or when the battery is fully charged, leading to suboptimal performance and interference artifacts.
Innovation Solution
Control circuitry in electronic devices determines the usage of cameras and adjusts wireless power transfer operations by pausing or modifying the power transfer when specific criteria are met, such as camera usage, battery state of charge, or proximity, to mitigate interference and optimize coexistence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless power transfer operation continues during camera use, then power transfer efficiency is maintained, but electromagnetic interference degrades camera performance
Solution Approach 1:
The system implements periodic pausing of wireless power transfer operations during camera usage. The control circuitry detects camera operation states and temporarily suspends power transfer in periodic intervals that coincide with camera exposure times, then resumes normal operation when camera use ceases. This periodic action eliminates electromagnetic interference artifacts in captured images while maintaining overall power transfer efficiency.
2Speed
If wireless power transfer operates at high power levels, then charging speed is improved, but electromagnetic interference increases and affects camera operations
Solution Approach 1:
The system dynamically adjusts wireless power transfer parameters based on real-time detection of camera operation states. When camera use is detected, the control circuitry temporarily reduces or pauses power transfer at high power levels, then restores full power charging speed when camera operation ends. This dynamic adaptation allows the system to achieve both fast charging and clean camera captures by adjusting power levels in response to operational conditions.
3Manufacturing precision
If wireless power transfer is paused during camera use, then camera image quality is improved, but power transfer time increases
Solution Approach 1:
The system applies partial pausing of power transfer only during specific camera exposure intervals rather than complete suspension. The control circuitry identifies brief moments when the camera shutter is active and pauses power transfer only during these short durations, allowing the majority of charging to proceed uninterrupted. This partial action approach maintains image quality by eliminating interference during critical capture moments while minimizing overall charging time extension.
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 enhances the coexistence of wireless power transfer and camera operations by reducing electromagnetic interference, allowing for improved camera performance and efficient power management, particularly during critical usage conditions like low-light or high-fidelity modes.
Implementation Method 1
The coil receives alternating-current wireless power signals from the wireless power transmitting device
Implementation Method 2
The rectifier circuitry converts the received signals into direct-current power
Data Source
AI summary
A wireless power system may include an electronic device. The electronic device can include a camera and wireless power circuitry configured to perform a wireless power transfer operation with an external device. To promote coexistence of the camera with the wireless power circuitry, the electronic device can alter the wireless power transfer operation.