Image Stabilization Barrel Position Deviation Detection
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Solution Overview
Problem
Conventional image stabilization systems in network camera systems face challenges in maintaining stability and detecting abnormalities over extended periods, leading to potential image blur and operational inefficiencies.
Innovation Solution
An image stabilization apparatus with a magnet and coil drive unit, position detection, and control section that moves a movable barrel to a target position, allowing for self-diagnosis and judgment of operational deviations, restricting operation if deviations exceed allowable ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image stabilization is performed continuously over extended periods, then image stability is maintained, but operational abnormalities may go undetected leading to system reliability issues
Solution Approach 1:
The patent implements preliminary diagnosis actions by detecting the position of the movable barrel before and during image stabilization operations. The control section compares detected positions with expected positions to identify abnormalities before they cause image blur, enabling preventive maintenance and ensuring continuous reliable operation without adding complex diagnostic hardware.
2Reliability
If the movable barrel position is continuously monitored for abnormality detection, then operational reliability is improved, but measurement precision requirements increase system complexity
Solution Approach 1:
The patent employs feedback control by continuously detecting the movable barrel position using a position detection section and comparing it with the target position commanded by the control section. When the deviation exceeds a predetermined threshold, the system identifies an abnormality and restricts further operation. This feedback mechanism ensures reliable operation through simple position comparison rather than requiring high-precision measurement of absolute position.
3Manufacturing precision
If the judgment section restricts operation when deviations exceed allowable ranges, then image quality is protected, but productivity is reduced due to operational restrictions
Solution Approach 1:
The patent implements dynamic operation management by allowing the image stabilization apparatus to operate freely when position deviations are within acceptable ranges, and only restricting operation when abnormalities are detected. This dynamic approach maintains high productivity during normal operation while protecting image quality through automatic restriction only when necessary, rather than imposing continuous operational limitations.
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 stable image capture and detects abnormalities, preventing image blur and maintaining system reliability through self-diagnosis and adaptive control.
Implementation Method 1
a drive unit configured to include a magnet and a coil, and drive the movable barrel with respect to the fixed barrel
Data Source
AI summary
An image stabilization apparatus includes a fixed barrel, a movable barrel, a support member configured to movably support the movable barrel with respect to the fixed barrel, a drive unit configured to include a magnet and a coil, and drive the movable barrel, a control section configured to drive and control the drive unit, a position detection section configured to detect a position of the movable barrel, and a judgment section configured to detect, when the drive unit drives via the movable barrel so as to move to a predetermined target position, a deviation between the position of the movable barrel and the predetermined target position and judge whether or not the apparatus operates normally based on whether or not the deviation falls within a first allowable range.