Touchscreen Misoperation Prevention via Multi-Sensor Context Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Touchscreen misoperations on mobile terminals occur frequently due to continuous unlocking in motion states, leading to unintended actions such as incorrect dialing, message deletion, or network access, potentially resulting in loss of important information.
Innovation Solution
A method and apparatus that detect the presence of an object within a preset distance, ambient light intensity, and the angle of the touchscreen relative to a horizontal plane to set the touchscreen to a touch-disable mode when these conditions are met, preventing accidental touches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the touchscreen continuously remains in an unlocked state to provide convenient access, then the ease of operation is improved, but the reliability deteriorates due to frequent misoperations
Solution Approach 1:
The touchscreen dynamically adjusts its operational state between locked and unlocked based on real-time detection of motion parameters (acceleration, orientation, proximity). The system transitions from a static unlocked state to a dynamic state that adapts to user context, enabling convenient access when stationary while preventing misoperations during motion
Solution Approach 2:
The system continuously monitors motion sensors (accelerometer, gyroscope, proximity sensor) and uses this feedback to automatically control the touchscreen lock state. When motion exceeding thresholds is detected, the system feeds back by locking the touchscreen, and when motion subsides, it unlocks, creating a closed-loop control system that balances accessibility and accuracy
2Reliability
If the touchscreen is locked to prevent misoperations, then the reliability is improved, but the ease of operation deteriorates due to required unlocking steps
Solution Approach 1:
The touchscreen lock system operates autonomously without requiring user intervention. The motion sensors automatically detect when the device is being moved or held in unusual orientations, and the system self-adjusts the lock state accordingly, eliminating the need for manual locking or unlocking by the user
3Reliability
If multiple detection parameters (object presence, light intensity, angle) are used to control touchscreen locking, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent leverages existing multi-functional sensors in the mobile device (accelerometer for both screen orientation and motion detection, proximity sensor for both call detection and misoperation prevention, light sensor for ambient light and activity detection) to control touchscreen locking. By making these existing sensors serve the additional function of detecting usage context, the system achieves high reliability without adding dedicated detection hardware
Solution Approach 2:
The system monitors changes in multiple physical parameters (acceleration magnitude, orientation angle, proximity distance, light intensity) and uses threshold-based logic to determine when to lock the touchscreen. By establishing predefined thresholds for these parameters, the complex multi-parameter detection is simplified into straightforward conditional logic that is easy to implement and maintain
Data Source
AI summary
The present invention belongs to the field of communications technologies, and discloses a method and an apparatus for preventing a touchscreen misoperation. The method includes detecting whether an object exists within a preset distance facing a touchscreen of a mobile terminal and detecting light intensity of an environment in which the touchscreen is located. The method also includes detecting whether an angle between a plane on which the touchscreen is located and a horizontal plane falls within a preset angle range. Additionally, the method includes setting the touchscreen of the mobile terminal to a touch-disable mode if an object exists within the preset distance facing the touchscreen of the mobile terminal, the detected light intensity is less than preset intensity, and it is detected that the angle between the plane on which the touchscreen is located and the horizontal plane does not fall within the preset angle range.