Touch Intensity Control with Provisional and Definite Value Preview
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electronic apparatuses that detect contact intensity on touch panels often select unintended processing when users adjust touch intensity during a single-stroke operation, due to methods that determine touch intensity based on maximum pressure or limited intensity levels.
Innovation Solution
An electronic apparatus with a touch detection unit and pressure detection unit that performs processing based on the pressing force detected before touch removal, allowing for the calculation of both provisional and definite touch intensity values, enabling user-intended processing by previewing visual effects and confirming adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the maximum value of pressure applied during touch operation is determined as user-intended touch intensity, then the touch intensity can be determined quickly, but processing that is not intended by the user can be selected when the user adjusts contact intensity
Solution Approach 1:
The system performs preliminary detection of touch intensity at multiple time points during the touch operation, storing these values before final determination. This allows the system to capture the user's adjustment process and select the appropriate intensity value from the recorded sequence, ensuring both quick determination and accurate reflection of user intent.
2Device complexity
If touch intensity is determined only at two levels, then the system complexity is reduced, but when a strong touch operation is performed, definite processing is set at this time point causing unintended processing to be selected when user adjusts contact intensity
Solution Approach 1:
The system dynamically determines touch intensity by evaluating pressure values at multiple time points during the touch operation rather than using fixed two-level thresholds. The control unit selects the appropriate intensity level based on the temporal pattern of pressure changes, allowing the system to adapt to user adjustments while maintaining simple hardware architecture.
3Measurement precision
If the system detects touch removal and uses the pressing force at that moment, then the latest touch intensity is captured, but it does not account for user adjustments made during the touch operation
Solution Approach 1:
The system implements feedback by continuously monitoring pressure values throughout the touch operation and using this information to determine the final touch intensity. The control unit analyzes the temporal pattern of pressure changes and selects the appropriate intensity value that reflects the user's intended action, rather than simply using the pressure at touch removal.
Data Source
AI summary
Upon detection of a touch operation, an intensity of the touch is detected to calculate a provisional value of the touch intensity, and a video image to which a visual effect based on the provisional value is applied is displayed. Upon detection of removal of the touch, a definite value of the touch intensity is calculated and a confirmation screen for confirming whether to apply a visual effect based on the definite value is displayed.