Touch Screen Pointer with Directional Drag Control
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Solution Overview
Problem
Conventional touch screens on mobile terminals are miniaturized, leading to small key areas and slippery surfaces, making accurate input and selection of icons or letters difficult without assistance tools, resulting in frequent unintended commands and errors.
Innovation Solution
A pointing device and method that allows users to accurately point to items on a touch screen using a pointer activating mode, where a control part displays a pointer on the screen, and the user can input signals to select items by dragging the pointer with their finger, with the arrow direction adjusting based on the drag direction to prevent slipping beyond the screen edge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the touch screen is miniaturized to reduce terminal size and weight, then portability is improved, but the area of each key button becomes very small making accurate input difficult
Solution Approach 1:
The patent introduces a stylus pen as an intermediary tool between the user and the miniaturized touch screen. The stylus pen provides a precise pointing mechanism that can accurately target small key buttons despite the limited screen area, thereby maintaining input accuracy while preserving the miniaturized design for portability
2Object-affected harmful factors
If the touch screen surface is made slippery to prevent fingerprints and smudges, then cleanliness is improved, but the stylus pen slips on the surface making unintended commands occur
Solution Approach 1:
The patent changes the surface parameter of the touch screen by applying a coating layer with specific friction characteristics. This coating provides just enough friction to prevent stylus slipping while maintaining the slippery surface properties that prevent fingerprints and smudges, thereby resolving the contradiction between cleanliness and command accuracy
3Adaptability or versatility
If all keyboard keys are displayed on the miniaturized touch screen, then the keyboard function is preserved, but the area for displaying other icons and information is reduced
Solution Approach 1:
The patent segments the touch screen into different functional zones: a dedicated area for displaying keyboard keys and another area for displaying icons and information. This segmentation allows both keyboard functionality and other interface elements to coexist on the miniaturized screen without compromising either function, thereby resolving the area conflict
4Measurement precision
If a stylus pen is used to accurately select icons and letters, then input precision is improved, but the screen surface may be damaged from frequent use
Solution Approach 1:
The patent employs a stylus pen with a replaceable tip that can be easily replaced when worn. This disposable tip approach allows the stylus to be used frequently for precise pointing without risking permanent damage to the screen, as the tip can be replaced rather than the screen itself
Data Source
AI summary
A device and a method are disclosed for providing a pointer for a terminal with a touch screen, which can easily select an intended item displayed on the touch screen by accurately pointing to the intended item through the pointer displayed on a screen when a pointer activating mode is selected by a user and performing an operation according to the selected item so that input errors are reduced by allowing a user to provide accurate input.