Dual-Camera Drive Control for Hand-Shake Image Stabilization
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Solution Overview
Problem
Existing electronic devices with cameras face challenges in effectively stabilizing images against hand-shake disturbances during photography or video recording, particularly in compact devices where traditional image stabilization methods may be limited.
Innovation Solution
The electronic device employs a dual-camera system with distinct driving units, utilizing pulse width modulation (PWM) and linear driving methods to stabilize images, where the first camera uses PWM during preview and the second camera uses linear driving, enhancing stabilization capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single camera uses traditional image stabilization methods, then the device structure remains simple, but the image stabilization effectiveness is limited
Solution Approach 1:
The patent divides the camera system into two separate camera modules, each with its own driving unit. The first camera uses PWM driving method while the second camera uses linear driving method, allowing independent optimization of stabilization performance for different camera functions without compromising overall system simplicity.
2Use of energy by moving object
If PWM driving method is used for image stabilization, then power consumption is reduced, but stabilization precision may be compromised
Solution Approach 1:
The patent applies different driving methods to different camera modules based on their specific requirements. The first camera module uses PWM driving for power efficiency in preview mode, while the second camera module uses linear driving for higher precision during photo capture, optimizing both power consumption and stabilization precision locally for each camera's function.
3Measurement precision
If linear driving method is used for image stabilization, then stabilization precision is improved, but power consumption increases
Solution Approach 1:
The patent dynamically selects different driving methods based on the camera's operational state. During preview mode, PWM driving is used to save power, while during photo capture mode, linear driving is activated to provide higher stabilization precision. This dynamic switching optimizes the balance between power consumption and stabilization precision according to real-time needs.
4Adaptability or versatility
If dual-camera system with different driving methods is implemented, then image stabilization is optimized for different functions, but device complexity increases
Solution Approach 1:
The patent implements a dual-camera system where each camera module serves different functions with optimized driving methods. The first camera handles preview and video with PWM driving, while the second camera handles photo capture with linear driving. This multi-functional design allows the system to adapt to various camera functions with appropriate stabilization strategies, justifying the increased complexity through enhanced versatility.
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
This approach provides improved image stabilization by optimizing power consumption and stabilization efficiency, allowing for clearer images and reduced blurring in various camera functions.
Implementation Method 1
The coil supplied with current may generate electromagnetic force through electromagnetic interaction with the magnet
Implementation Method 2
driving the first driving unit included in the electronic device using a pulse width modulation (PWM) driving method
Data Source
AI summary
According to an embodiment, an electronic device may include a display, a first camera including a first lens assembly and a first driving unit, a second camera including a second lens assembly and a second driving unit, and a processor, wherein the processor may be configured to display, based on a request for execution of a camera function, through the display, a preview image obtained using the second camera, and drive the first driving unit using a pulse width modulation (PWM) driving method to move the first camera and drive the second driving unit using a linear driving method to move the second camera during at least a portion of a time period in which the preview image is obtained through the second camera. Various other embodiments are possible.