Rotating Display Gear Feedback Control for Stable Screen Reorientation
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Solution Overview
Problem
Existing display devices face challenges in performing natural and stable rotation, often leading to damage when manual or automatic rotation is not controlled accurately.
Innovation Solution
A display device equipped with a motor, driving gear, rotating gear with holes, a rotation sensor, and a processor that adjusts rotation speed based on sensor signals to ensure stable and controlled rotation, detecting disturbances and stopping the rotation when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If rotation of the display is performed by a rotation module (motor and gear), then automatic rotation capability is achieved, but the rotation module may be damaged due to unstable control
Solution Approach 1:
A rotation sensor detects the position of the rotating gear by sensing holes in the gear teeth, and feeds back position information to the processor. The processor adjusts the motor's rotation speed based on this feedback, ensuring stable and controlled rotation while preventing damage to the rotation module.
Solution Approach 2:
The system dynamically adjusts the rotation speed of the motor during the rotation process. The processor controls the motor to rotate at different speeds at different stages of rotation, enabling smooth and controlled movement that prevents damage to the rotation module while achieving automatic rotation.
2Device complexity
If the display is rotated manually by the user, then no rotation module is needed, but the rotation operation is not natural and may cause damage
Solution Approach 1:
The patent replaces the manual mechanical rotation operation with an automated motor-driven system. The motor and gear mechanism substitute for manual user force, providing natural and controlled rotation while the sensor and processor ensure smooth operation that prevents damage.
3Productivity
If the rotation speed is increased to improve rotation efficiency, then productivity is improved, but the stability and precision of rotation control deteriorates
Solution Approach 1:
The system uses dynamic speed control where the motor rotates at different speeds at different stages. The processor adjusts the rotation speed based on sensor feedback, allowing efficient rotation while maintaining precision through continuous control adjustments.
Solution Approach 2:
The rotation sensor provides continuous feedback on the gear position, enabling the processor to monitor and adjust the motor speed in real-time. This feedback mechanism ensures that rotation efficiency is maintained while precision is preserved through active control.
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
This solution enhances the accuracy and stability of display rotation, preventing damage and allowing for seamless switching between landscape and portrait modes.
Implementation Method 1
The rotation sensor according to an embodiment of the present disclosure may include a light sensor
Data Source
AI summary
Disclosed is a display device including a motor, a driving gear rotated by the motor, a rotating gear engaged with the driving gear to rotate around a rotation axis and including a plurality of holes, a display connected to the rotating gear to rotate around the rotation axis, a rotation sensor configured to output a signal indicating whether a hole included in the rotating gear is detected, and a processor configured to control the motor to change a rotation speed of the display based on the signal output by the rotation sensor.