Foldable Screen Rotation Control Using Dual Housing Sensors
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Solution Overview
Problem
Foldable electronic devices require a method to control screen rotation based on various shapes of the display, as the user's viewing direction changes with the transformation of the device's structure.
Innovation Solution
The device includes a hinge module connecting two housings with sensors to detect the folding angle and a processor that selects and controls the display direction based on sensor data, ensuring content is displayed appropriately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display structure is transformed into various shapes through folding, then the adaptability of the device is improved, but the complexity of controlling screen rotation increases
Solution Approach 1:
The patent divides the sensing system into two separate sensors: a first sensor disposed in the first housing to detect rotation angles when the first display is active, and a second sensor disposed in the second housing to detect rotation angles when the second display is active. This segmentation allows each sensor to independently handle rotation detection for its respective display, simplifying the overall control logic despite the complex foldable structure.
Solution Approach 2:
The patent implements dynamic sensor selection based on the operational state of the displays. The processor dynamically determines which sensor to use based on whether the first display or second display is currently active, and based on the folding angle of the housing. This dynamic approach enables the system to adapt to various folding configurations while maintaining simple rotation control for the active display.
2Measurement precision
If sensors are disposed in both housings to detect rotation angles, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by placing sensors in specific locations within each housing based on where they are needed. The first sensor is disposed in the first housing to detect rotation when the first display is active, while the second sensor is disposed in the second housing to detect rotation when the second display is active. This localized sensor placement optimizes measurement precision for each display's operational context while avoiding unnecessary sensors throughout the entire device.
Solution Approach 2:
Each sensor serves multiple functions: detecting rotation angles for display orientation control, determining folding states, and enabling appropriate display selection. The first sensor in the first housing and the second sensor in the second housing both contribute to the overall folding angle detection and display management, making the sensor system multi-functional rather than requiring dedicated sensors for each function.
Data Source
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AI summary
In a foldable electronic device of various embodiments of the present invention, the rotational angle of the electronic device is detected using a first sensor arranged in a first housing and/or a second sensor arranged in a second housing, which are selected based on folding angles of the first housing and the second housing, and thus content can be provided according to a situation in which a user uses the electronic device.