Dynamic Touch Feedback Graph Sizing for Precision Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing touchscreen feedback methods lack precision in visual feedback, as the fixed size of feedback graphs fails to accurately represent touch positions, leading to inadequate precision in touch selection.
Innovation Solution
A method and apparatus that dynamically determine the area size of feedback graphs based on touch information such as touch area or pressure, using interpolator functions like cubic Bezier curves to adjust the size according to normalized values, thereby enhancing precision in visual feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed size feedback graph is used, then the implementation is simple, but the precision of visual feedback is low
Solution Approach 1:
The feedback graph size is changed from fixed to dynamic, adjusting according to touch area or pressure values. The system calculates appropriate feedback graph dimensions based on real-time touch parameters, enabling the visual feedback to adapt to different touch scenarios and improve precision without requiring complex manual configuration.
Solution Approach 2:
The patent changes the parameter of feedback graph size from a constant value to a variable that depends on touch area or pressure. By establishing a relationship between touch parameters and feedback graph dimensions, the system achieves adaptive visual feedback precision while maintaining implementation simplicity through mathematical relationships.
2Measurement precision
If the feedback graph is too small, then it may precisely reflect the touch position, but it is difficult to see
Solution Approach 1:
The feedback graph size is locally adapted to match the touch area characteristics. By making the feedback graph size proportional to the touch area or pressure, the system ensures that the visual feedback is both visible and precisely positioned, with the size automatically adjusting to the local touch characteristics rather than using a uniform size throughout.
Data Source
Figure 1~2
Figure 3~5
AI summary
According to a visual feedback method and apparatus for touch selection that are provided by embodiments of the present invention, touch information and a center point of touch are acquired, where the foregoing touch information is a touch area and/or touch pressure; an area size of a feedback graph is determined according to the foregoing touch information; and, by using the foregoing center point of touch as a center, the foregoing feedback graph is displayed according to the area size of the feedback graph, for a user to determine a touch position. Because a size of a feedback image is determined according to the touch information (a touch area and/or touch pressure), precision of visual feedback for touch selection can be improved.