Sliding Control Method Using Curved Trajectory for Touch Accuracy
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Solution Overview
Problem
The small operational area on touch screens of devices like smartphones and tablets leads to frequent mis-operations and inaccurate localizations during page-turning controls, resulting in longer operation times and reduced battery life due to the close distance between touch points.
Innovation Solution
A sliding control method that detects a trigger signal on a slidable trajectory, re-determines the current touch point, and changes the trajectory to a longer second trajectory, providing a wider operational space and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the distance between touch points in page-turning control is reduced to fit more pages on screen, then the quantity of pages displayed increases, but the accuracy of touch localization deteriorates and mis-operations increase
Solution Approach 1:
The patent transforms the one-dimensional linear trajectory into a two-dimensional curved trajectory (circular arc). This dimensional change allows the trajectory to occupy more screen space vertically, increasing the effective operational area without reducing the distance between touch points horizontally. The curved path provides users with a larger target area for accurate touch input while maintaining adequate spacing between page indicators.
Solution Approach 2:
The patent dynamically adjusts the trajectory length and shape based on the current page position. When navigating through pages, the trajectory extends to provide a longer operational path, giving users more space and time to accurately locate and tap the desired page. This dynamic adaptation resolves the contradiction by providing extended operational area precisely when needed for accurate page selection.
2Measurement precision
If the operational area on touch screen is increased to improve accuracy, then the accuracy of touch localization improves, but the device size increases
Solution Approach 1:
The patent utilizes the vertical dimension by curving the trajectory into a circular arc shape. This allows the operational area to extend vertically across the screen rather than being confined to a narrow horizontal band. The curved trajectory effectively increases the operational area within the existing screen boundaries, providing larger touch targets without increasing the physical device size.
Solution Approach 2:
The patent applies curvature to the trajectory, transforming it from a straight line into a circular arc. This curved geometry allows the trajectory to better utilize the available screen space, creating a more spacious operational area that improves touch localization accuracy. The spherical/circular form factor enables the interface to fit within the compact device form while providing adequate operational area.
3Reliability
If the distance between touch points is increased to reduce mis-operations, then the accuracy of touch localization improves, but the number of pages that can be displayed simultaneously decreases
Solution Approach 1:
By curving the trajectory into a circular arc, the patent distributes page indicators along a longer path that utilizes vertical screen space. This dimensional change allows more pages to be displayed along the curved trajectory while maintaining adequate distance between individual touch points, thereby reducing mis-operations while increasing the total number of visible pages.
Data Source
AI summary
The present disclosure discloses a sliding control method and the device thereof, falling into the field of human-computer interaction (HCI). The method comprises: displaying a slidable trajectory containing a current touch point; detecting a trigger signal being applied to the slidable trajectory; upon detection of the trigger signal, re-determining a current touch point; changing a corresponding first trajectory on the slidable trajectory to a second trajectory according to the re-determined current touch point; wherein, the first trajectory is entire or part of the slidable trajectory, the length of the second trajectory is longer than that of the first trajectory.