Touchscreen Visual Expander for Accurate Feature Selection
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Solution Overview
Problem
Touchscreen displays face challenges with small features that are difficult to activate with fingers, particularly in handheld devices, where users may incorrectly select features due to lack of feedback, and existing solutions like styluses can be cumbersome for visually impaired individuals or those with limited coordination.
Innovation Solution
A computer-implemented method for touchscreen displays that detects touches and expands graphical user interface (GUI) areas proximate to the touch location, allowing for visual magnification and sensitivity scaling, enabling intuitive finger-based interactions and providing feedback for accurate feature selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If features on the touchscreen display are enlarged to meet minimum human factors requirements, then ease of operation is improved, but the amount of space available for displaying other information is reduced
Solution Approach 1:
The touchscreen display is segmented into multiple display modes: a normal mode showing all features at standard size, and an expanded mode showing a subset of features at enlarged size. This segmentation allows the system to provide large, easy-to-activate features when needed while preserving full screen real estate for information display during normal operation.
Solution Approach 2:
The display dynamically transitions between normal and expanded modes based on user interaction. When a user touches a feature, the display expands to show enlarged features for easier activation, then returns to normal mode afterward. This dynamic adjustment provides large activation targets only when needed, maintaining maximum information display space during normal use.
2Productivity
If features are made small to maximize screen space, then productivity is improved, but reliability deteriorates due to difficulty in accurate selection
Solution Approach 1:
The system provides visual feedback by highlighting and expanding the feature under the user's finger touch. This feedback mechanism confirms to the user which feature is being selected, eliminating uncertainty about small feature boundaries and ensuring accurate selection before the action is executed.
Solution Approach 2:
Before executing a feature selection, the system performs a preliminary expansion action that enlarges the target feature and provides visual confirmation. This preliminary step ensures the user has accurately identified the intended feature before the selection is finalized, improving reliability without sacrificing productivity.
3Measurement precision
If a stylus is used to activate small features, then measurement precision is improved, but ease of operation worsens due to manipulation difficulty and loss risk
Solution Approach 1:
The mechanical stylus system is replaced with a direct finger touch interface. The touchscreen detects finger touches and automatically expands features for easier activation, eliminating the need for precise manual manipulation of a stylus while maintaining or improving targeting precision through visual feedback and expansion.
Solution Approach 2:
The touchscreen system automatically detects finger touches and performs the expansion action without requiring the user to manipulate any external tool. The system serves itself by interpreting the touch location and automatically adjusting the display to facilitate accurate selection, removing the complexity of stylus manipulation entirely.
Data Source
AI summary
A computer implemented method for a touchscreen display is disclosed. The method includes presenting graphical information on the touchscreen display. The method further includes detecting a touch over the touchscreen display. The method also includes expanding an area of the touch screen display proximate the location of the touch.