Camera Movable Component Vibration Noise Suppression
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Solution Overview
Problem
Vibration noises generated by movable components in camera modules of electronic devices, such as mobile phones, due to external forces with wide frequency bands, disrupt the hearing experience.
Innovation Solution
A method involving an actuating coil that detects the vibration state of the electronic device and generates specific current signals to move the movable camera component to abut against the inner shell, thereby suppressing vibrations and reducing noise by stabilizing its position relative to the fixed component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the electronic device uses advanced sounding technology with vibration of housing, then the device becomes thinner and lighter without sounding holes, but the vibration drives movable camera components to vibrate and generate collision noises
Solution Approach 1:
The system applies preliminary anti-action by detecting vibration states and generating compensation signals before collision noises occur. The actuating coil receives compensation signals that pre-position the movable component or apply counter-vibration, preventing the harmful collision effect from happening in the first place
Solution Approach 2:
The system converts the harmful vibration effect into a beneficial one by using the same vibration mechanism to generate compensation signals. The actuating coil uses electromagnetic force to create counter-vibration that cancels out the harmful collision noises, transforming the vibration problem into a solution
2Adaptability or versatility
If the camera module includes movable components for automatic-focusing or anti-shaking, then the camera functionality is enhanced, but the movable components vibrate under external forces and generate collision noises
Solution Approach 1:
The system implements feedback by detecting the vibration state of the electronic device and using this information to generate compensation signals. The detection unit monitors the vibration, and the actuating coil responds with compensation signals that are proportional to the detected vibration state, creating a closed-loop control system that eliminates collision noises while preserving camera functionality
Solution Approach 2:
The actuating coil serves as an intermediary between the vibration detection and the movable camera component. It receives compensation signals and translates them into electromagnetic forces that act on the movable component, mediating the interaction between device vibration and camera component to prevent harmful collisions
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
Effectively reduces collision noises between movable and fixed components, maintaining a stable hearing experience by controlling the movement of the camera's movable component during device vibrations.
Implementation Method 1
a movable lens component, that can be driven by an actuating coil to realize the automatic-focusing or anti-shaking function
Implementation Method 2
generates a suppression signal to drive the movable component to move to an inner wall of the inner shell, so as to avoid a collision between the movable component and other components in the camera
Data Source
AI summary
The present disclosure provides a method for suppressing vibration noises of a camera in an electronic device, wherein the electronic device at least comprises a housing, and an acoustic actuator and a camera accommodated in the housing, and the acoustic actuator drives the electronic device to vibrate and sound; the camera is a zoom lens and comprises a movable component and a fixed component, and the method comprises the following steps of: S1: detecting whether the acoustic actuator is in a vibrating state, performing S2 if the acoustic actuator is in a vibrating state; otherwise, ending the step; S2: generating a drive current according to a relative position relationship between the movable component and the fixed component to drive the movable component to move until abuts against the fixed component and tightly presses the movable component; and S3: repeating S1. The present disclosure greatly suppresses the vibration of the movable component, thereby suppressing the vibration noises of the camera.