Image Deflection Correction Apparatus Using Integration Value Matching
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Solution Overview
Problem
Existing image deflection correction systems fail to accurately detect the end of pan/tilt operations in cameras, leading to unnecessary cessation or failure to restart image deflection correction, especially in environments with ongoing vibrations.
Innovation Solution
An image deflection correction apparatus that uses a deflection detection device, integration value calculation, and determination devices to assess the matching of positive and negative integration values of deflection signals, allowing secure detection of pan/tilt operation cessation and switching between correction modes accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the end judgment condition uses a simple threshold check for a certain period, then the judgment process is simple, but it fails to accurately detect pan/tilt operation end in environments with ongoing vibrations
Solution Approach 1:
The patent changes the judgment parameters from a simple threshold check to a dual-condition evaluation involving both threshold magnitude and positive/negative integration value matching. This allows accurate detection in vibrating environments by requiring both conditions to be satisfied simultaneously
Solution Approach 2:
The patent introduces feedback mechanisms by calculating integration values of deflection signals and comparing positive and negative direction integrations. This feedback loop provides more reliable detection by analyzing the cumulative effect of vibrations rather than instantaneous values
2Ease of operation
If the image deflection correction is stopped during pan/tilt operation, then the unnatural screen and bad operability are resolved, but the correction fails to restart automatically after operation end
Solution Approach 1:
The patent uses feedback from the deflection detection sensor to automatically determine when pan/tilt operation has ended by evaluating both threshold conditions and integration value matching, enabling automatic restart of image deflection correction without manual intervention
Solution Approach 2:
The system performs self-service by automatically detecting operation end and restarting correction functionality. The judgment device and integration value calculation device work autonomously to monitor conditions and trigger restart when appropriate
Data Source
AI summary
The present invention provides an image deflection correction apparatus that can securely detect that the pan/tilt operation is ended, and securely switch to a proper mode of image deflection correction. In the case where the mode of image deflection correction is changed (the image deflection correction is stopped) by judging that an optical system such as a camera is in the pan/tilt operation, if the positive direction integration value of integrating the absolute value of the difference between the value of a defection signal and a reference value while the deflection signal outputted from a deflection detection device such as an angular velocity sensor is changed in the positive direction with respect to the reference value, and the negative direction integration value while it is changed in the negative direction, are matched, it is judged that the pan/tilt operation is ended, and the image deflection correction apparatus switches to the mode of image deflection correction where the pan/tilt operation is not active.