Dual-Display Camera Preview for Foldable Photography Collaboration
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Solution Overview
Problem
The existing methods for displaying preview images on foldable electronic devices are monotonous, limiting the user experience as only one side of the device can view the preview image during photography.
Innovation Solution
A method and apparatus for displaying a preview image on both the front and back displays of a foldable electronic device, synchronously displaying the same image on both screens by copying framing content from the front display to the back display when a collaboration condition is met, such as the device being unfolded and a rear camera being enabled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the preview image is displayed only on the front display, then the device complexity is reduced and power consumption is lower, but the user experience becomes monotonous and collaborative photography is limited
Solution Approach 1:
The patent applies the copying principle by duplicating the preview image from the front display to the back display. The processing module copies the preview image data and transmits it to the back display, enabling both displays to show the same image without requiring complex real-time synchronization mechanisms. This resolves the technical contradiction by enabling collaborative photography capability while keeping the system relatively simple through data duplication rather than complex synchronization.
2Adaptability or versatility
If the preview image is displayed on both front and back displays simultaneously, then the photography collaboration experience is enhanced, but the power consumption increases due to lighting up both displays
Solution Approach 1:
The patent applies the dynamics principle by making the back display's activation conditional rather than static. The control module determines whether to light up the back display based on specific conditions: whether the device is in a first state (unfolded) and whether collaborative photography is needed. This dynamic approach allows the system to enhance photography collaboration experience when needed while conserving power when the back display remains dark, thus resolving the technical contradiction between multi-display capability and power consumption.
3Ease of operation
If the back display is always kept on, then the preview image can be viewed on both sides, but the power is wasted when photography collaboration is not needed
Solution Approach 1:
The patent applies the feedback principle by implementing a control module that continuously monitors device state and photography mode, then provides feedback control over the back display's power state. The control module receives information about whether the device is in the first state and whether collaborative photography is active, and accordingly controls whether to light up the back display. This feedback mechanism ensures the back display is only powered when actually needed for preview viewing, resolving the technical contradiction between viewing convenience and energy loss.
Data Source
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AI summary
This application relates to the technical field of terminals, and discloses a method and an apparatus for displaying a preview image, and a readable storage medium. The method includes: enabling a camera in response to detecting a camera enabling operation; displaying a first preview image on a first display, where the first preview image is generated based on a first framing content collected by the camera; lighting up a second display when a collaboration condition is triggered, where the collaboration condition is a condition of synchronously displaying the first preview image on the second display; copying the first framing content to obtain a second framing content; generating a second preview image based on the second framing content; and displaying the second preview image on the second display. In this way, the preview image is synchronously displayed on the first display and the second display of an electronic device, which adds a manner for displaying the preview image, so that a user located on a front side of the electronic device and a user located on a back side of the electronic device can simultaneously see the preview image, thereby improving photographing experience of the user.