Touch Screen Error Mitigation via Command History Analysis
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Solution Overview
Problem
Touch screens are often small relative to a user's finger, leading to frequent touch selection errors due to imprecision in selecting command icons, especially when the user is in motion or narrowly misses the intended target.
Innovation Solution
An apparatus comprising a touch screen, processor, and memory that detects touch selection errors and mitigates them by utilizing a command history to display intended touch selections as enlarged icons or a list, prioritizing based on valid and invalid command histories to facilitate accurate selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If command icons are made small to fit more on the touch screen, then the information density increases, but the touch selection accuracy deteriorates
Solution Approach 1:
The system segments the touch selection process into multiple stages: initial small icon display for information density, error detection stage, and correction stage with enlarged icons. This allows the interface to maintain high information density while providing accurate selection opportunities when needed.
Solution Approach 2:
When a touch error is detected, the system transitions from displaying icons in their original small dimension to presenting correction options in an enlarged dimension. This dimensional change allows users to accurately select the intended command without permanently increasing the space required for icon display.
2Volume of moving object
If the touch screen size is kept small for portability, then the device compactness improves, but the touch selection accuracy deteriorates
Solution Approach 1:
The interface dynamically adapts its presentation based on the detected error. Instead of requiring a larger static screen, the system activates an enlarged correction interface only when needed, maintaining device compactness while providing accurate selection capability on demand.
Solution Approach 2:
The system performs preliminary error detection and analysis before presenting correction options. By detecting the intended command through command history analysis and proximity calculation, the system prepares the enlarged correction interface in advance, allowing users to quickly correct errors without prolonged interaction.
3Measurement precision
If command icons are displayed in enlarged format to improve selection accuracy, then the touch selection accuracy improves, but the screen space utilization deteriorates
Solution Approach 1:
The system segments the icon display into normal mode (small icons for space efficiency) and correction mode (enlarged icons for accuracy). This segmentation allows the interface to maintain optimal screen space utilization during normal operation while providing enlarged icons only when error correction is needed.
Solution Approach 2:
The enlarged icon display is activated periodically or event-driven based on error detection rather than continuously. This periodic activation ensures that screen space is used efficiently during normal operation while providing enhanced accuracy when the system detects a touch selection error requires correction.
Data Source
AI summary
For mitigating touch selection errors, code detects a touch selection error on a touch screen. In addition, the code mitigates the touch selection error based at least in part on a command history.