Foldable Display Haptic Feedback Control via Motion Sensors
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Solution Overview
Problem
Foldable electronic devices with haptic feedback systems face challenges in providing consistent haptic experiences due to changes in device shape between open and closed states, leading to unintended haptic feedback for users.
Innovation Solution
Incorporating a hinge structure with first and second housings, each equipped with vibration elements and motion sensors, a processor, and memory to control vibration intensity based on sensor measurements, ensuring consistent haptic feedback across different device states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the electronic device is fully opened, then the length of the electronic device increases, but the perceived intensity of haptic feedback increases unintentionally
Solution Approach 1:
The patent employs motion sensors to detect the actual position and state of the foldable display, and uses this feedback information to dynamically adjust the intensity of haptic feedback. The processor receives signals from motion sensors about the display's angular position and modifies vibration output accordingly, ensuring consistent haptic perception regardless of whether the device is folded or unfolded.
Solution Approach 2:
The patent changes the parameter of haptic feedback intensity based on the physical state of the device. By detecting the angular position of the foldable display through motion sensors, the system adjusts the vibration amplitude and intensity levels to compensate for changes in device geometry, maintaining uniform haptic experience across different configurations.
2Length of moving object
If the electronic device is fully closed, then the length of the electronic device decreases, but the perceived intensity of haptic feedback decreases unintentionally
Solution Approach 1:
The motion sensors continuously monitor the foldable display's position and provide feedback to the processor. When the device is closed, the sensors detect the compact configuration and automatically increase haptic feedback intensity to compensate for the reduced effective length, ensuring consistent user experience.
Solution Approach 2:
The system dynamically adjusts haptic feedback parameters based on detected device state. When the foldable display is in a closed position, the processor modifies vibration intensity parameters to maintain consistent perceived haptic feedback, preventing the decrease that would otherwise occur due to the compacted device geometry.
3Reliability
If motion sensors are added to control haptic feedback intensity, then haptic feedback consistency is improved, but device complexity increases
Solution Approach 1:
The motion sensors serve multiple functions: they detect the angular position of the foldable display for haptic feedback control, and can also be used for other device functions such as orientation detection or motion-based interactions. This multi-functionality helps justify the added complexity by providing additional capabilities beyond just haptic feedback control.
Solution Approach 2:
By implementing a feedback loop where motion sensors continuously monitor device state and the processor adjusts haptic feedback in real-time, the system achieves consistent haptic experience. The feedback mechanism automatically compensates for geometric changes without requiring complex manual adjustment or multiple separate sensors for each function.
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 ensures consistent and controlled haptic feedback, enhancing user experience by adjusting vibration intensity in real-time based on device state and position, thereby mitigating the variability in haptic perception caused by shape changes.
Implementation Method 1
a first vibration element disposed in a first portion of the first housing
Implementation Method 2
a first motion sensor disposed in an area adjacent to the first vibration element in the first housing
Data Source
AI summary
A foldable electronic device is provided, which includes a hinge structure, a first housing that is connected to the hinge structure, a second housing that is connected to the hinge, a first vibration element disposed in the first housing, a first motion sensor disposed adjacent to the first vibration element, a second motion sensor disposed in the second housing, a processor, and a memory. The memory stores instructions that, when executed, cause the processor to control vibration intensity of the first vibration element, based on a first value measured from the first motion sensor and a second value measured from the second motion sensor.