Camera OIS Cross-Axis Feedback for High-Zoom Blur Control
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Solution Overview
Problem
Electronic devices with camera modules face issues in correcting shake stabilization errors, particularly when high magnification zoom is used, leading to enlarged image blur due to crosstalk between axis movements, which deteriorates image quality.
Innovation Solution
The electronic device incorporates an optical image stabilization system with a first and second direction driver, monitored by a processor, to adjust movement amounts and correct for crosstalk between axes, using driver circuits to minimize blur during high magnification zoom.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If high magnification zoom is used, then image detail and magnification capability are improved, but image blur is enlarged due to crosstalk between axis movements
Solution Approach 1:
The patent implements a feedback mechanism where the first direction driver monitors the movement amount of the second direction driver, and the second direction driver monitors the movement amount of the first direction driver. This cross-axis movement information is fed back to respective drivers to enable real-time correction of crosstalk errors, thereby maintaining image stability during high magnification zoom operations
Solution Approach 2:
The patent introduces an intermediary correction mechanism where each direction driver acts as a mediator to compensate for the other axis' movement effects. The first direction driver corrects its own movement based on monitored second axis movement, and vice versa, effectively mediating the crosstalk interference between axes to preserve image quality
2Device complexity
If individual axis control is implemented, then control simplicity is improved, but crosstalk error correction capability deteriorates
Solution Approach 1:
The patent merges the control functions of both axes by having each direction driver perform dual roles: controlling its own axis while simultaneously monitoring and correcting for the other axis' movements. This combination approach maintains the simplicity of individual axis control structures while achieving cross-axis error correction, thus improving position accuracy without significantly increasing system complexity
Data Source
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AI summary
An electronic device according to an embodiment disclosed in the disclosure includes a camera module including an optical image stabilization device, a memory, and a processor, and the optical image stabilization device includes a first direction driver, a first driver circuit that controls the first direction driver, a second direction driver, and a second driver circuit that controls the second direction driver, and the first direction driver monitors a movement amount of the second direction driver from a control signal transmitted from the processor, determines a first correction amount corresponding to the movement amount, and controls the first direction driver based on the first correction amount. Additional various embodiments identified through the specification are possible.