OIS Function Testing Using Simulated Vibration Signals
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Solution Overview
Problem
Conventional methods for testing optical image stabilization in electronic devices require expensive shakers and can introduce testing errors due to precision variations, increasing costs and complexity.
Innovation Solution
A method and device for testing optical image stabilization by capturing static images and applying vibration simulation signals to simulate vibration compensation, allowing evaluation of image stabilization performance without physical vibration, using the electronic device's inertial sensors and processors to generate test results based on pattern sizes in static and simulated images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shaker is used to test optical image stabilization, then the testing can be performed with conventional equipment, but the testing costs increase and precision errors may occur
Solution Approach 1:
The patent creates a virtual copy of the vibration effect through software simulation rather than using physical vibration equipment. The vibration simulation signal replicates the effect of physical shaking without requiring actual mechanical movement, thereby eliminating the need for expensive shakers while maintaining testing reliability.
Solution Approach 2:
The patent replaces the mechanical vibration system (shaker) with an electronic simulation system. Instead of physically vibrating the device to test image stabilization, the system uses processed images and virtual vibration signals to simulate the vibration effect, substituting mechanical testing with computational analysis.
2Reliability
If physical vibration is applied to test image stabilization, then real-world vibration conditions can be simulated, but testing costs and space requirements increase
Solution Approach 1:
The patent creates a virtual copy of the vibration effect through software simulation rather than using physical vibration equipment. The vibration simulation signal replicates the effect of physical shaking without requiring actual mechanical movement, thereby eliminating the need for expensive shakers while maintaining testing reliability.
Solution Approach 2:
The patent replaces the mechanical vibration system (shaker) with an electronic simulation system. Instead of physically vibrating the device to test image stabilization, the system uses processed images and virtual vibration signals to simulate the vibration effect, substituting mechanical testing with computational analysis.
3Measurement precision
If shaker-based testing is used, then optical image stabilization can be evaluated under vibration conditions, but testing precision varies due to shaker accuracy
Solution Approach 1:
The patent replaces the mechanical vibration system (shaker) with an electronic simulation system. Instead of physically vibrating the device to test image stabilization, the system uses processed images and virtual vibration signals to simulate the vibration effect, substituting mechanical testing with computational analysis.
Solution Approach 2:
The patent creates a virtual copy of the vibration effect through software simulation rather than using physical vibration equipment. The vibration simulation signal replicates the effect of physical shaking without requiring actual mechanical movement, thereby eliminating the need for expensive shakers while maintaining testing reliability.
Data Source
AI summary
An electronic device and a method for testing an image stabilization function thereof are provided. The method is adapted for the electronic device including an image capturing module, and includes the following. While the electronic device is in a static state, a static image of a test pattern is captured through the image capturing module. While the electronic device is in the static state, a vibration simulation signal is provided to the image capturing module. During a period of providing the vibration simulation signal to the image capturing module, a vibration compensation image of the test pattern is captured using an Optical Image Stabilization (OIS) function through the image capturing module. According to a pattern size of the test pattern in the static image and a pattern size of the test pattern in the vibration compensation image, a test result of the OIS function is generated.