Blade Open-Close Device for Camera Aperture Control
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Solution Overview
Problem
Existing electronic devices with camera functions face issues of unintended image capture due to partially uncovered lens apertures, which can lead to unauthorized image leakage or failure in capturing intended images, and existing manual shields are prone to incomplete operation and vulnerability to remote unauthorized access.
Innovation Solution
A blade open-close device with a mechanical switch and independent drive system that reliably opens or closes the lens aperture, using a slidable blade actuated by a yoke and coil mechanism, with a switch operated by the user to generate signals for complete aperture control, independent of the camera module's drive output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a manually operated shield is used to cover the lens aperture, then the device structure is simple, but the shield may stop before completely covering or uncovering the lens aperture without being noticed by the user
Solution Approach 1:
The patent introduces a sensor that detects whether the blade has reached the fully open or fully closed position and provides feedback to the control unit. The control unit uses this feedback to determine when to stop driving the blade, ensuring complete and reliable aperture coverage or exposure without requiring complex mechanical stop mechanisms.
Solution Approach 2:
The patent replaces manual mechanical operation with an automated driving system consisting of a drive unit, control unit, and sensor. This substitution eliminates the unreliability of manual operation while maintaining relatively simple device structure through automated control based on sensor feedback.
2Reliability
If an electrically operable shield is used to avoid incomplete operation, then the aperture coverage reliability is improved, but the device becomes vulnerable to remote unauthorized access
Solution Approach 1:
The patent separates the control system into two independent parts: (1) the camera module drive output that controls camera operations, and (2) the blade drive control that is independent of camera module drive output. This segmentation ensures that even if the camera module is compromised by unauthorized access, the blade control remains secure and cannot be remotely operated to expose the aperture.
Solution Approach 2:
The patent introduces a mechanical switch operation member as an intermediary between the user and the blade control system. This mechanical switch requires physical user interaction to generate opening or closing signals, creating a secure interface that cannot be remotely activated, thus preventing unauthorized access while maintaining reliable aperture control.
3Object-affected harmful factors
If a mechanical switch operation member is used to generate opening and closing signals, then security against remote unauthorized access is improved, but the device complexity increases
Solution Approach 1:
The mechanical switch operation member is integrated into the housing and can be directly operated by the user without requiring additional external controls or complex interfaces. The switch automatically generates the appropriate opening or closing signal based on user operation, simplifying the control mechanism while maintaining high security against remote unauthorized access.
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 complete and reliable coverage or exposure of the lens aperture, preventing unintended image capture and ensuring intended images are captured, while maintaining security against unauthorized access and accidental operations.
Implementation Method 1
an actuator that opens or closes the blade, a drive that drives the actuator
Data Source
AI summary
A technique reduces images unintended by the user captured with an electronic device having a camera function by unauthorized access or an accidental operation performed by the user. A blade open-close device includes a blade that opens or closes a lens aperture in a camera module, an actuator that opens or closes the blade, a drive that drives the actuator, and a switch that inputs an opening signal and a closing signal into the drive. The switch includes a mechanical switch operation member that generates the opening signal and the closing signal in response to a manual operation performed by a user. The drive is independent of a drive output from the camera module.