Touch Screen Control Using Segmented Buffer Zones for Edge Touch Accuracy
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Solution Overview
Problem
Narrow-bezel or no-bezel mobile terminals can lead to unintentional touch errors due to the proximity of screen edges, causing disconnection of sliding operations between the wrong-trigger prevention area and the normal touch area, which affects user experience.
Innovation Solution
A method and apparatus that determine a wrong-trigger prevention area at the edges of the touch screen, a buffer area within it, and a normal touch area, allowing the system to respond to touch operations based on the distribution of touch points across these areas, preventing disconnection of sliding operations and enhancing accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wrong-trigger prevention area is set at the edge of the touch screen, then wrong-trigger prevention is improved, but sliding operations connecting the wrong-trigger prevention area and normal touch area become disconnected
Solution Approach 1:
The touch screen is segmented into three distinct areas: wrong-trigger prevention area, buffer area, and normal touch area. This segmentation allows different touch handling rules to apply to different zones, enabling wrong-trigger prevention at edges while maintaining sliding operation continuity through the buffer area that bridges the prevention area and normal touch area.
Solution Approach 2:
The buffer area serves as an intermediary zone between the wrong-trigger prevention area and the normal touch area. It mediates touch events that occur at the boundary, allowing sliding operations to continue smoothly across the transition zone without being blocked by the wrong-trigger prevention mechanism.
2Area of stationary object
If the touch screen is enlarged to display more contents, then screen occupation and viewing experience are improved, but the bezel width decreases leading to more unintentional edge touches
Solution Approach 1:
The wrong-trigger prevention area is pre-established at the edges of the touch screen before any touch events occur. This preliminary configuration proactively prevents unintentional edge touches from being registered as valid input, allowing the screen to be enlarged without increasing edge touch errors.
3Reliability
If touch points in the wrong-trigger prevention area are omitted, then wrong-trigger prevention is achieved, but sliding operations from or to the prevention area cannot be normally responded
Solution Approach 1:
Different quality rules are applied to different areas: touch points in the wrong-trigger prevention area are omitted to prevent wrong triggers, while touch points in the buffer area are responded to enable sliding operations. This local differentiation allows the system to simultaneously achieve wrong-trigger prevention and maintain sliding operation responsiveness.
Data Source
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AI summary
A method and apparatus for controlling a touch screen of a terminal as well as a terminal are provided. The method includes detecting a multi-touch event performed on a terminal touch screen (101). The method also includes determining an area where multiple touch points corresponding to the multi-touch event are distributed, wherein the terminal touch screen is divided into a wrong-trigger prevention area, a buffer area and a normal touch area, the buffer area being located between the wrong-trigger prevention area and the normal touch area (102). The method also includes, when the multiple touch points are distributed in the wrong-trigger prevention area and the buffer area, controlling the touch screen to respond to a touch operation at the multiple touch points (103,104). Thus, a sliding operation on a terminal touch screen is prevented from being disconnected, and the accuracy of wrong-trigger prevention of the terminal is improved.