Terminal Flick Suppression via Capacitance and Coordinate Analysis
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Solution Overview
Problem
Touchscreen terminals often mistakenly interpret unintentional finger contact as flick operations due to changes in contact area, affecting user experience.
Innovation Solution
A control method that utilizes capacitance signals and report point coordinates to differentiate between intentional and unintentional operations, suppressing flick reports by comparing signal changes between frames and adjusting report point coordinates to prevent visual 'jumping' effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal uses capacitance signal changes to detect user operations, then operation detection sensitivity is improved, but false detection of unintentional taps as flick operations increases
Solution Approach 1:
The patent segments the operation detection process into multiple independent analysis dimensions: capacitance signal changes, report point coordinate changes, and operation duration. By dividing the detection into these separate segments and requiring multiple conditions to be met simultaneously, the system achieves more accurate operation identification while reducing false positives from unintentional taps.
Solution Approach 2:
The patent adds a new dimension to operation detection by incorporating report point coordinate changes alongside capacitance signal analysis. This multi-dimensional approach allows the system to distinguish between intentional flick operations (which produce significant coordinate changes) and unintentional taps (which produce minimal coordinate changes), thereby improving reliability without sacrificing sensitivity.
2Reliability
If the terminal suppresses flick reports based on capacitance signal comparison, then false flick detection is reduced, but intentional flick operations may be missed
Solution Approach 1:
The patent applies partial suppression by not blocking all flick reports, but only those that fail to meet multiple criteria including insufficient report point coordinate changes and abnormal operation duration. This partial action approach maintains high reliability by filtering false positives while preserving legitimate flick operations that satisfy all detection conditions.
Solution Approach 2:
The system uses feedback from multiple parameters (capacitance signal magnitude, coordinate displacement, operation duration) to dynamically adjust flick detection decisions. By continuously monitoring these feedback signals and requiring consistent patterns across all parameters, the system accurately distinguishes intentional flick operations from unintentional touches while maintaining appropriate response rates.
3Measurement precision
If the terminal uses multiple parameters for operation detection, then operation identification accuracy is improved, but system complexity increases
Solution Approach 1:
The patent merges multiple detection parameters (capacitance signal analysis, report point coordinate tracking, operation duration measurement) into a unified operation detection framework. By combining these parameters into a single integrated system that evaluates all conditions together, the patent achieves high identification accuracy while avoiding the complexity of separate independent detection systems.
Solution Approach 2:
The detection system is designed with multi-functionality to handle various operation types (taps, flicks, clicks) using the same set of parameters and detection logic. This universal approach allows the system to accurately identify different operations without requiring separate specialized detection mechanisms for each operation type, thereby maintaining simplicity while achieving high 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
Improves user experience by accurately distinguishing between intended and unintended touch actions, ensuring smooth and accurate on-screen interactions.
Implementation Method 1
a capacitive touchscreen is disposed on the terminal... the terminal obtains a capacitance signal and report point coordinates
Data Source
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AI summary
Embodiments of the present invention provide a control method and a terminal. The control method includes: obtaining input information, where the input information includes a capacitance signal and report point coordinates generated when a user performs an operation on a terminal screen; using report point coordinates in a previous frame as report point coordinates in a current frame if it is determined that a capacitance signal in the current frame and a capacitance signal in the previous frame that are in the input information meet a preset condition; or using report point coordinates in a previous frame as report point coordinates in a current frame if it is determined that the report point coordinates in the current frame and report point coordinates in a first frame that are in the input information meet a preset condition. Therefore, flicking caused by an unintentional operation of the user is suppressed, and user experience is improved.