Magnetic Sensor Direction Mapping for Foldable Screens
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Solution Overview
Problem
Foldable screens in electronic devices pose challenges for sensors, such as magnetic sensors, which struggle to accurately indicate direction when the device is in a non-folded state.
Innovation Solution
A method is introduced that determines an equivalent plane for the magnetic sensor when the foldable screen is in a non-folded state, maps detected motion and directional data to this equivalent plane, and uses the resulting equivalent data to indicate the motion direction of the electronic device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the magnetic sensor is used in a foldable screen device in a non-folded state, then the device can be displayed using the outer screen or inner screen, but the magnetic sensor does not accurately indicate the direction of the electronic device
Solution Approach 1:
The patent introduces an equivalent plane concept that transforms the magnetic sensor's measurement space. By defining an equivalent plane based on the foldable screen's actual configuration (folded, half-folded, or expanded state), the system recalibrates the magnetic sensor's directional measurements to account for the screen's spatial arrangement, thereby restoring measurement accuracy while maintaining display versatility
Solution Approach 2:
The system dynamically determines the equivalent plane according to the foldable screen's real-time state. The processor identifies whether the screen is in a folded, half-folded, or expanded state, and accordingly calculates the appropriate equivalent plane for magnetic sensor calibration. This dynamic adaptation ensures that direction indication accuracy is maintained across all display configurations
2Adaptability or versatility
If the foldable screen is unfolded at a certain angle, then the device can display content in different forms, but the sensor output needs adjustment and direction indication becomes inaccurate
Solution Approach 1:
The system incorporates feedback through the processor, which continuously monitors the foldable screen's state and adjusts the magnetic sensor's equivalent plane accordingly. This feedback mechanism ensures that sensor output remains reliable across different display angles and configurations by dynamically recalibrating the measurement reference frame
Solution Approach 2:
The patent changes the reference parameter for magnetic sensor measurements from a fixed horizontal plane to a dynamic equivalent plane that varies with the foldable screen's configuration. By adjusting this fundamental parameter based on the screen's actual state (folded, half-folded, or expanded), the system maintains sensor reliability without requiring physical sensor repositioning
Data Source
AI summary
The present disclosure provides a method and apparatus for obtaining data indicating direction, electronic device and storage medium. This method, applied to an electronic device including a foldable screen with a magnetic sensor, includes: determining, in response to the foldable screen being in a non-folded state, an equivalent plane to which the magnetic sensor is equivalent; obtaining equivalent motion data by mapping detected motion data to the equivalent plane; and obtaining equivalent directional data by mapping directional data detected by the magnetic sensor to the equivalent plane. The equivalent motion data and the equivalent directional data indicate a motion direction of the electronic device.