Multi-Actuator Image Stabilization for High-Angle and High-Frequency Hand-Shake Correction
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Solution Overview
Problem
Existing smartphones struggle to effectively correct both high-angle and high-frequency hand-shakes using existing lens-shift or sensor-shift image stabilization methods.
Innovation Solution
A multi-image stabilization device and method that utilizes a driver circuit to generate specific driving signals for lens or prism actuation and sensor actuation based on gyro sensor information, enabling simultaneous correction of high-angle and high-frequency hand-shakes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If lens-shift method is used for image stabilization, then high-angle hand-shake correction is improved, but high-frequency hand-shake correction deteriorates
Solution Approach 1:
The patent combines lens-shift image stabilization and sensor-shift image stabilization into a single integrated system. The driver circuit selectively activates either the lens actuator or the image sensor actuator based on the detected hand-shake characteristics (angle and frequency), thereby achieving both high-angle and high-frequency hand-shake correction capabilities in one system.
Solution Approach 2:
The system dynamically switches between lens-shift and sensor-shift methods based on real-time hand-shake detection. The driver circuit analyzes gyro sensor information to determine the type of hand-shake (high-angle or high-frequency) and accordingly selects the appropriate stabilization method, making the system adaptable to different hand-shake conditions.
2Measurement precision
If sensor-shift method is used for image stabilization, then high-frequency hand-shake correction is improved, but high-angle hand-shake correction deteriorates
Solution Approach 1:
The patent integrates both lens-shift and sensor-shift image stabilization mechanisms into a unified system. By combining these two methods, the system can address both high-angle and high-frequency hand-shake issues that individually neither method could fully resolve.
Solution Approach 2:
The system employs dynamic selection between sensor-shift and lens-shift based on hand-shake characteristics. The driver circuit continuously monitors gyro sensor data and switches the active stabilization method to match the detected hand-shake type, optimizing correction effectiveness for each scenario.
3Device complexity
If single image stabilization method is used, then device complexity is reduced, but image stabilization performance deteriorates
Solution Approach 1:
The patent creates a multi-functional image stabilization system where a single integrated driver circuit can perform both lens-shift and sensor-shift operations. This universal approach allows one system to handle multiple types of hand-shake correction, improving reliability without proportionally increasing complexity.
Solution Approach 2:
The system uses dynamic control to switch between different stabilization methods based on operational needs. The driver circuit adapts its behavior in real-time, selecting the appropriate stabilization approach (lens-shift or sensor-shift) according to the detected hand-shake characteristics, thereby maintaining high effectiveness across varying conditions.
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
The solution effectively stabilizes images by correcting both high-angle and high-frequency hand-shakes, improving image quality in various camera applications.
Implementation Method 1
a gyro sensor detecting a hand-shake of the camera body portion and outputting gyro sensor information
Implementation Method 2
a lens actuator disposed in the camera body portion for driving the lens assembly and performing image stabilization on the lens assembly in response to the lens driving signal
Implementation Method 3
a sensor actuator disposed in the camera body portion for driving the image sensor unit and performing image stabilization on the image sensor unit in response to the sensor driving signal
Data Source
AI summary
A camera apparatus includes a camera body portion including a prism unit, a lens assembly, and an image sensor unit, a gyro sensor detecting a hand-shake with respect to the camera body portion and outputting gyro sensor information, a driver circuit generating at least one of a prism driving signal for image stabilization of the prism unit and a sensor driving signal for image stabilization of the image sensor unit based on the gyro sensor information, a prism actuator disposed in the camera body portion for driving the prism unit and performing image stabilization on the prism unit in response to the prism driving signal, and a sensor actuator disposed in the camera body portion for driving the image sensor unit and performing image stabilization on the image sensor unit in response to the sensor driving signal.