Multi-touch Screen Junction Area Touch Sensing Method
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Solution Overview
Problem
Current multi-touch touch screens face errors in recognizing touch inputs at junction areas between multiple screens, leading to incorrect detection of single or multiple points of contact, causing unsmooth operations and user inconvenience.
Innovation Solution
A method that utilizes a touch-sensing layer and controller to calculate the center and distance of sensing information from adjacent touch screens, comparing these values to a predetermined reference distance to accurately determine single or multi-point contacts, thereby preventing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple touch displays are arranged together to form a big multi-touch touch display, then the display area is increased, but the junction area between touch displays causes touch recognition errors
Solution Approach 1:
The patent introduces a junction area as an intermediary zone between adjacent touch displays. This junction area serves as a mediator to handle touch events that occur at the boundary, preventing misrecognition by providing a dedicated processing region that coordinates between neighboring displays.
Solution Approach 2:
The patent divides the multi-touch display system into separate touch display units with defined boundaries. Each touch display independently processes touch events within its own area, while the junction area manages the interface between segments, allowing independent optimization of each unit while maintaining overall system reliability.
2Measurement precision
If a single point of contact at the junction area is detected, then two separate touch displays each register a touch point, but this causes erroneous determination of multiple points of contact
Solution Approach 1:
The patent implements a feedback mechanism where touch information from adjacent touch displays is cross-referenced and validated. When a touch event occurs at the junction area, the system receives feedback from both neighboring displays and uses coordination logic to determine whether this represents a single or multiple intentional touch points, preventing erroneous multi-touch detection.
Data Source
AI summary
A multi-touch touch screen and its junction area touch sensing method are disclosed. The multi-touch touch screen consists of multiple touch screens each including a touch-sensing device having a touch-sensing layer for sensing the present of one or multiple points and generating a respective sensing information and a controller for computing the center or centroid of each sensing information and the distance between the centers or centroids of each two sensing information and then comparing each computed distance with a predetermined reference distance and then determining the contact to be a multi-point of contact if the computed distance is larger than the predetermined reference value, or a single-point of contact if the computed distance is smaller than the predetermined reference value.