Magnetic Camera Module Control for 3D Image Stabilization
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Solution Overview
Problem
Existing image stabilization methods for smartphones are limited to two-dimensional space and cannot effectively address camera lens shake in three-dimensional space, such as during vertical camera lens reverse movement.
Innovation Solution
An electronic device with a camera module housed in a cavity, equipped with a permanent magnet and coil, uses magnetic fields to stabilize the camera module's position through displacement and angular deflection, enabling instantaneous image stabilization in three-dimensional space by controlling magnetic fields generated by the coil and permanent magnet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If electronic image stabilization or optical image stabilization is used, then image stabilization in two-dimensional space is achieved, but image stabilization in three-dimensional space cannot be resolved
Solution Approach 1:
The patent extends image stabilization from two-dimensional space (X and Y axes) to three-dimensional space by adding stabilization capability in the vertical direction. This is achieved by introducing a magnetic field-based actuation mechanism that can compensate for camera lens shake in all three spatial dimensions, thereby resolving the limitation of conventional EIS/OIS methods that only address planar stabilization.
2Adaptability or versatility
If magnetic field-based camera module actuation is implemented, then three-dimensional space stabilization is achieved, but device complexity increases
Solution Approach 1:
The patent replaces conventional mechanical image stabilization mechanisms (such as moving parts along rails or using gyroscopic structures) with a magnetic field-based actuation system. By using magnetic fields to control the camera module's position and orientation, the system achieves three-dimensional stabilization while reducing mechanical complexity and the number of moving components.
3Speed
If magnetic field-based actuation is used for camera module stabilization, then instantaneous stabilization is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The patent incorporates a feedback control mechanism that detects the actual position and orientation of the camera module, compares it with the desired position, and adjusts the magnetic field strength accordingly. This closed-loop control system enables instantaneous stabilization response while automatically compensating for manufacturing tolerances and ensuring precise positioning without requiring extremely tight manufacturing specifications.
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
Ensures the image shooting direction remains unchanged, achieving instantaneous image stabilization in three-dimensional space, improving captured image quality and user experience.
Implementation Method 1
supplying, by using a power manager, a coil with a target electrical signal corresponding to the target control information, to adjust a magnetic field status of a second magnetic field generated by the coil, thereby making a camera module perform predetermined movement under the action of a first magnetic field and the second magnetic field
Implementation Method 2
a permanent magnet is disposed on the camera module... the first magnetic field is generated by a permanent magnet in the camera apparatus
Data Source
AI summary
This application discloses an electronic device and a control method. The electronic device includes a controller, a power manager, a detector, and a camera apparatus, wherein the camera apparatus includes a camera module and a cavity; a permanent magnet is disposed on the camera module; a coil is disposed on an inner wall of the cavity; the camera module is disposed in the cavity; the controller is separately connected to the detector, the power manager, and the camera apparatus; and the power manager is connected to the camera apparatus.