Foldable Phone Rear-Camera Selfie Preview on Secondary Screen
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Solution Overview
Problem
Foldable mobile phones with a front-facing camera have poor selfie photography effects due to limited camera specifications, resulting in suboptimal image quality and user experience.
Innovation Solution
A method for foldable devices that enables a rear-facing selfie function by switching the screen and camera configuration in a folded state, allowing the rear-facing camera to be used for photography and displaying the preview on a secondary screen, enhancing image quality and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the front-facing camera is used for selfie photography in foldable mobile phones, then the device maintains portability and simplicity, but the photographing quality and user experience deteriorate due to limited camera specifications
Solution Approach 1:
The patent applies dynamics by making the camera configuration adaptable to different device states. The system dynamically switches between front-facing and rear-facing cameras based on whether the device is folded or unfolded, and between different screens based on the folding state. This dynamic adaptation allows the use of the higher-specification rear-facing camera for selfies when folded, improving photographing quality without requiring a permanently complex multi-camera setup.
Solution Approach 2:
The rear-facing camera serves multiple functions: it is used for both regular rear-facing photography and for selfie photography when the device is in folded state. The screens also serve multiple purposes - the first screen displays content in unfolded state while the second screen displays selfie preview in folded state. This multi-functionality allows the higher-specification rear-facing camera to be utilized for selfies without adding dedicated hardware.
2Manufacturing precision
If the rear-facing camera is used for selfie photography, then the image quality improves, but the device operation complexity increases due to screen switching and configuration changes
Solution Approach 1:
The system performs preliminary actions by automatically detecting the device folding state and pre-configuring the appropriate camera and screen before the user takes a selfie. When the device is folded, the system automatically switches to the rear-facing camera and the second screen, so the user simply needs to capture the photo without manually configuring settings. This preliminary automatic configuration maintains ease of operation while enabling high-quality rear-facing selfies.
Solution Approach 2:
The system uses feedback from the device state (folded/unfolded) to automatically adjust the camera and screen configuration. The folding state detection provides feedback that triggers the appropriate mode switching, creating a closed-loop system where the device adapts to user needs based on its physical state. This feedback mechanism allows complex camera switching to occur automatically based on simple, intuitive user actions.
3Illumination intensity
If the first screen remains on during rear-facing selfie photography, then power consumption increases and interface clarity deteriorates, but switching to the second screen provides a darker display background and better preview visibility
Solution Approach 1:
The display system is segmented into two independent screens that can operate independently. The first screen can be turned off while the second screen remains on for displaying the selfie preview. This segmentation allows the system to reduce power consumption by keeping only the necessary screen (second screen) active during folded-state selfie photography, while also providing a darker background that improves preview visibility.
Data Source
AI summary
Embodiments of this application provide a photographing method and an electronic device. The method is applied to an electronic device. The method includes: receiving a first operation of a user when the electronic device is in a folded state, a first screen is in a screen-on state, and a second screen is in a screen-off state; and in response to the first operation, controlling to turn off the first screen and turn on the second screen, and displaying a first photographing preview interface by using the second screen, where the first photographing preview interface includes an image obtained by using the rear-facing camera.