Dual-Screen Video Calls With Automatic Rear-Screen Interface Switching
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Solution Overview
Problem
On dual-screen mobile phones, users need to manually switch screens to initiate a video call using a camera on the second screen, which is inconvenient and complex.
Innovation Solution
A method and device that allows initiating a video call request on the first screen, displaying the video call interface on the second screen, without requiring the user to switch, through inputs on the first screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera is disposed on the rear side of a dual-screen mobile phone, then the camera resolution is higher, but the user needs to switch from the main screen to the rear screen to initiate a video call, increasing operational complexity
Solution Approach 1:
The patent introduces a screen switching mechanism as an intermediary that allows the user to initiate a video call on the main screen while the system automatically switches to the rear screen for camera activation. This mediator resolves the contradiction by decoupling the initiation action from the execution screen, maintaining high camera resolution while simplifying user operation.
Solution Approach 2:
The system performs preliminary screen switching before the video call function is actually needed. When the user initiates a video call on the main screen, the system proactively switches to the rear screen in advance, so that when the camera needs to activate, it is already on the correct screen, thus avoiding complex manual switching operations.
2Reliability
If the user switches from the first screen to the second screen to initiate a video call, then the video call can be conducted using the rear screen camera, but the operation becomes complex and time-consuming
Solution Approach 1:
The system performs the screen switching action in advance when the video call initiation is detected on the main screen. This preliminary action ensures that by the time the user needs to use the camera, the system has already switched to the rear screen, eliminating the need for additional manual switching and reducing the time loss.
Solution Approach 2:
The system automatically performs the screen switching operation without requiring user intervention. The switching is triggered automatically when a video call is initiated on the main screen, and the system manages the transition to the rear screen autonomously, saving the user time and effort.
3Ease of operation
If a camera is disposed on each screen of a dual-screen mobile phone, then video call can be initiated directly on the main screen, but the resolution of the main screen camera is lower than the rear screen camera
Solution Approach 1:
The system uses screen switching as an intermediary mechanism that allows the user to initiate the video call on the main screen (maintaining ease of operation) while automatically transitioning to the rear screen for camera activation (ensuring high resolution). This mediator enables the system to achieve both convenience and quality without requiring physical cameras on both screens.
Data Source
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AI summary
Provided are a video call method and a terminal device, solving the problem that when a user uses a first screen in a double-screen mobile phone, if the user wants to carry out a video chat by means of a camera corresponding to a second screen, the user needs to switch from the first screen to the second screen and then initiate a video call on the second screen, and then the user can carry out the video chat by means of the camera corresponding to the second screen. The method comprises: receiving a first input of a first target contact displayed on a first screen; and in response to the first input, initiating a video call request to the first target contact, and displaying a video call interface corresponding to the first target contact on the second screen.