Motion Sensor-Enhanced Touch Screen for Accidental Input Detection
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Solution Overview
Problem
Information handling systems face challenges in accurately distinguishing between intentional touch inputs and accidental contacts on touch screens, particularly in varying pressure conditions, which affects user interaction efficiency and accuracy.
Innovation Solution
Incorporating a motion sensor, such as an accelerometer or gyroscope, to complement the touch sensor, allowing the processor to correlate touch inputs with motion signals and differentiate between effective and ineffective touches, and classify contacts as low or high impact based on sensitivity settings and geometry, enabling appropriate actions or feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a touch sensor is used to detect user input, then the touch screen can recognize contact locations, but it cannot accurately distinguish between intentional touches and accidental contacts under varying pressure conditions
Solution Approach 1:
The patent combines a touch sensor with a motion sensor to create a hybrid detection system. The touch sensor detects contact location and pressure, while the motion sensor detects motion characteristics. By merging these two sensor systems, the patent achieves more accurate distinction between intentional and accidental touches, as each sensor type compensates for the other's limitations.
Solution Approach 2:
The motion sensor acts as an intermediary that provides additional detection dimensions beyond what the touch sensor alone can provide. It mediates the interpretation of touch events by adding motion context, enabling the system to differentiate between intentional and accidental contacts based on motion patterns rather than relying solely on pressure thresholds.
2Adaptability or versatility
If pressure thresholds are used to distinguish touch types, then the system can classify contacts as low or high impact, but it fails under varying pressure conditions and cannot reliably identify intentional touches
Solution Approach 1:
The patent changes the detection parameters from relying solely on pressure magnitude to incorporating motion characteristics such as velocity, acceleration, and motion trajectory. This parameter change enables the system to adapt to varying pressure conditions while maintaining accurate touch classification, as motion patterns remain consistent across different pressure levels for intentional touches.
Solution Approach 2:
The system transitions from static pressure-based detection to dynamic motion-based detection. By analyzing the temporal and spatial dynamics of the touch event (how the contact develops over time and space), the system can accurately identify intentional touches regardless of the final pressure level, making it adaptable to varying user pressing forces.
3Productivity
If the touch screen uses simple touch detection, then the device complexity remains low, but the user interaction efficiency and accuracy are reduced due to inability to distinguish intentional from accidental inputs
Solution Approach 1:
The patent merges a motion sensor with a touch sensor to enhance user interaction efficiency. Although this increases device complexity, the combined system processes touch events more accurately by analyzing both contact and motion data, thereby improving productivity through reduced misinterpretation of user inputs and enhanced interaction precision.
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
Enhances user interaction by accurately identifying and responding to intended touches, reducing accidental inputs and providing effective feedback, thereby improving the overall usability and efficiency of touch screen interfaces.
Implementation Method 1
Incorporating a motion sensor, such as an accelerometer or gyroscope
Implementation Method 2
Incorporating a motion sensor, such as an accelerometer or gyroscope
Data Source
AI summary
An information handling system includes a touch screen, a motion sensor, and a processor. The processor is configured to receive inputs from the touch screen, receive signals from the motion sensor, determine a correlation between the inputs from the touch screen and signals from the motion sensor, and perform an action in response to the correlation. The inputs from the touch screen correspond to a touch contact with the touch screen, and the signals from the motion sensor corresponding to a touch impact to the touch screen.