Dynamic Bandwidth Segmentation for Image Stabilization
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Solution Overview
Problem
Existing image stabilization systems face challenges when operating both mechanical and electronic image stabilization modules simultaneously, leading to interference, high power consumption, and computational complexity, which can degrade image quality and reduce battery life.
Innovation Solution
The system dynamically adjusts the operating bandwidths of the mechanical stabilization system and the electronic image stabilization module to prevent overlap, thereby reducing interference and optimizing power usage. This is achieved by using adaptive controllers to throttle the bandwidth and adjust cutoff frequencies based on temperature and battery state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both mechanical and electronic image stabilization modules operate simultaneously with overlapping bandwidths, then comprehensive motion coverage is achieved, but interference between modules increases and image quality degrades
Solution Approach 1:
The patent divides the motion stabilization function into two separate bandwidth ranges: mechanical stabilization handles lower frequencies (0-10Hz) while electronic stabilization handles higher frequencies (10-50Hz). This frequency segmentation eliminates interference between the two modules by ensuring they operate in non-overlapping bands, thereby maintaining image quality while preserving comprehensive motion coverage through combined effort.
2Reliability
If mechanical stabilization system uses high power to reject motions effectively, then motion rejection performance improves, but power consumption increases and battery life reduces
Solution Approach 1:
By segmenting the frequency spectrum and assigning mechanical stabilization to handle only low-frequency motions (0-10Hz), the system reduces the computational and power requirements for mechanical stabilization. High-frequency motions (10-50Hz) are handled by the electronic stabilization module, which consumes less power. This division allows effective motion rejection while significantly reducing overall power consumption and extending battery life.
Solution Approach 2:
The patent dynamically adjusts the cutoff frequencies of both stabilization modules based on detected motion characteristics and system state. When mechanical stabilization is active, the electronic module's cutoff frequency is raised to avoid overlap. This adaptive parameter adjustment optimizes power consumption by ensuring each module operates only when and where needed, rather than continuously at full capacity.
3Reliability
If adaptive controllers dynamically adjust bandwidths to prevent overlap, then interference is reduced and power is optimized, but system complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors motion characteristics and automatically adjusts the bandwidth parameters of the stabilization modules. A controller receives motion data, determines appropriate cutoff frequencies, and configures both mechanical and electronic stabilization modules accordingly. This feedback-based adaptive control dynamically prevents bandwidth overlap and optimizes performance while managing complexity through automated decision-making.
Data Source
AI summary
A device includes a mechanical stabilization system is used in image signal processing. The mechanical image stabilization system has an operating bandwidth and includes a motor to control an orientation of an image sensor. A processing apparatus of the device determines a temperature of the motor and adjusts a cutoff frequency of the operating bandwidth based on the temperature of the motor.