Touch Screen Gesture Recognition via Dot and Bar Segmentation
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Solution Overview
Problem
Conventional touch screen unlocking methods are not ergonomic, particularly for larger devices, and require users to look at the screen, making it difficult to unlock with one hand or without visual attention.
Innovation Solution
A method that detects a sequence of touch inputs within a predefined area on the touch screen, determining these as either dots or bars based on movement distance, allowing users to perform predefined functions like unlocking without visual guidance, using a sequence of dots and bars that can be input ergonomically with one hand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional touch screen unlocking methods are used, then the device can be unlocked with security protection, but the operation becomes difficult for one-handed use and without visual attention
Solution Approach 1:
The unlocking gesture is segmented into discrete elements (dots and bars) that can be sequentially recognized and validated. The touch input sequence is divided into individual touch events, each classified as either a dot (stationary touch) or bar (moving touch), enabling step-by-step verification without requiring the user to see the entire gesture path
Solution Approach 2:
Instead of requiring the user to follow visual guidance on screen (traditional approach), the system inverts the approach by having the system detect and interpret touch patterns autonomously without visual feedback. The predefined sequence is processed by the system rather than being visually guided by the user
2Illumination intensity
If the touch screen is made larger to improve display quality, then the display quality is improved, but the ease of one-handed operation decreases
Solution Approach 1:
The touch input sequence is segmented into discrete dots and bars that can be executed in sequence without requiring the user to see the entire gesture path, enabling one-handed operation on larger devices
Solution Approach 2:
The system provides autonomous touch input detection and interpretation without requiring visual guidance, allowing the device to serve itself in the unlocking process without user visual attention
3Reliability
If screen lock is applied to prevent mistouch, then security is improved, but the ease of operation deteriorates due to additional unlocking steps
Solution Approach 1:
The system inverts the traditional unlocking approach by not requiring visual guidance or complex sequential gestures. Instead, the system autonomously detects and interprets touch patterns, providing a simple one-handed gesture that maintains security while improving convenience
Solution Approach 2:
The system autonomously handles the unlocking process by detecting predefined touch sequences without requiring user visual attention or complex interaction, making the security feature transparent to the user
Data Source
AI summary
A method for controlling an electronic device with a touch screen includes detecting a sequence of touch inputs within a predefined area on the touch screen; determining a sequence of dots and bars according to the sequence of touch inputs; and performing a predefined function on the electronic device when the sequence of dots and bars conforms to a predefined sequence of dots and bars.