Touch-Screen Erasure via Skin Contact Gesture Detection
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Solution Overview
Problem
Existing touch-screen computing devices lack efficient and precise methods for erasing and editing within graphical user interfaces, particularly when using a stylus, as users are limited to traditional software tools or stylus-based erasing methods that restrict editing capabilities.
Innovation Solution
A computing device with a touch-screen display that detects skin contact and executes gestures to initiate and manage erasure functions, including predefined motions and force components, allowing users to perform erasures and edits using fingers or hands, and provides a rewind function to undo changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional software eraser tools are used, then erasure function is available, but precision and ease of operation are limited
Solution Approach 1:
The stylus is designed to perform multiple functions including writing, drawing, and erasing. By integrating both writing and erasing capabilities in a single tool, the system eliminates the need to switch between different tools, improving ease of operation while maintaining precision through gesture-based control
Solution Approach 2:
The patent replaces traditional mechanical eraser tools with a digital gesture-based erasing system. The erasure function is activated through specific gestures (such as dragging the stylus backward or using palm rejection technology) rather than physical contact with a mechanical eraser, enhancing both precision and ease of use
2Adaptability or versatility
If stylus button erasing is used, then erasure is enabled, but editing capabilities are restricted and ease of operation is reduced
Solution Approach 1:
The system dynamically switches between writing and erasing modes based on detected gestures. During writing, the stylus functions as a writing tool; when specific gestures are detected (such as palm contact or backward dragging), it automatically transitions to erasing mode. This dynamic adaptation provides versatility without requiring manual mode switching, improving ease of operation
Solution Approach 2:
The system prepares for erasing by detecting preliminary gestures such as palm contact or specific stylus movements before the actual erasure occurs. This allows the system to pre-load erasing functionality and transition smoothly between modes, making the erasing process more accessible and versatile
3Measurement precision
If traditional undo function is used, then editing is possible, but precision is insufficient and time consumption increases
Solution Approach 1:
The system provides real-time feedback during the erasing process by detecting the user's gestures and immediately applying the corresponding erasure actions. This instant feedback loop allows users to see the results of their gestures immediately, enabling precise editing without the delay of batch processing or multiple steps required by traditional undo functions
Data Source
AI summary
Examples described herein include improved systems and methods for performing erasures and edits within a graphical user interface. A computing device can include a processor that detects skin contact with a touch-screen display of the computing device. The processor can also detect, based on the skin contact, a gesture that indicates an erasure function. Based on that determination, the processor executes the erasure function.