Rotating Display Image Control Using Dual Angle Sensors
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Solution Overview
Problem
Existing electronic devices with rotating displays often experience inconvenient automatic rotation of the display image when the device is inclined beyond 180 degrees, leading to upside-down viewing angles that do not align with the user's intended usage situation.
Innovation Solution
An electronic device with a display and a base pivotally connected, equipped with a gravity sensor and an angle sensor, uses control signals to determine and maintain or rotate the display image orientation based on absolute and relative rotation angles, ensuring the image is properly aligned for the user's viewing direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display rotates by over 180 degrees to enable tablet-like usage mode, then the device can be held by hand or placed on the desk, but the G-sensor may rotate the display image according to its degree of inclination, causing the image to become upside-down and not meet the actual using situation
Solution Approach 1:
The patent segments the rotation control into two independent detection systems: angle sensor for relative rotation angle (display vs base) and gravity sensor for absolute rotation angle (display vs gravity axis). This segmentation allows independent control of each parameter, enabling the system to distinguish between intentional rotation for different usage modes and unintended inclination, thereby resolving the contradiction between usage mode adaptability and display image orientation convenience
Solution Approach 2:
The control module acts as an intermediary that receives signals from both the angle sensor and gravity sensor, processes the relative relationship between the two detection results, and determines the final display image rotation. This intermediary function allows the system to mediate between the conflicting requirements of usage mode adaptability and image orientation, making intelligent decisions based on the combined information from both sensors
2Adaptability or versatility
If the display rotates about the base over 180 degrees to become a reverse-V shape, then the display can lean against the desk or be held by hand, but the automatic rotation of the display image does not align with the user's intended viewing direction
Solution Approach 1:
The patent divides the rotation angle detection into two separate measurements: relative rotation angle detected by the angle sensor and absolute rotation angle detected by the gravity sensor. This segmentation provides more precise and comprehensive angle information, allowing the control module to accurately determine the display's actual orientation and make precise rotation adjustments, thereby resolving the contradiction between display rotation capability and rotation angle detection accuracy
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution accurately adjusts the display image orientation according to the device's position and usage scenario, preventing unexpected rotations and enhancing user convenience by maintaining the image in a suitable viewing position.
Implementation Method 1
Whether an absolute rotation angle of the display relative to a gravity axis detected by the gravity sensor is equal to or greater than a predetermined absolute angle threshold
Implementation Method 2
Whether a relative rotation angle of the display relative to the base detected by the angle sensor is equal to or greater than a first relative angle threshold and is equal to or less than a second relative angle threshold
Data Source
AI summary
A method, for rotating a display image of an electronic device, includes the following steps. Whether an absolute rotation angle of a display of the electronic device relative to a gravity axis is equal to or greater than a predetermined absolute angle threshold is detected. Whether a relative rotation angle of the display relative to a base of the electronic device is between a first and a second relative angle threshold is detected. The display image is maintained when the absolute rotation angle is equal to or greater than the predetermined absolute angle threshold and the relative rotation angle is between the first and second relative angle thresholds. The display image is rotated when the absolute rotation angle of the display is equal to or greater than the predetermined absolute angle threshold but the relative rotation angle is not between the first and second relative angle thresholds.