Touch Screen Character Input Mode Switching
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Solution Overview
Problem
Conventional character input methods, such as the T9 method, require users to switch input modes multiple times when entering proper nouns, leading to increased complexity and time required for character input due to the need for additional key presses and mode switching operations.
Innovation Solution
A character input method and apparatus that automatically switches input modes on a touch screen by assigning character groups to key regions, allowing users to select desired characters through press and drag events, reducing the need for mode switching and simplifying the input process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the T9 method is used for character input, then the number of key inputs is reduced for common words, but the user must switch input modes multiple times when entering proper nouns, increasing the complexity and time required for character input
Solution Approach 1:
The patent implements dynamic input mode switching based on real-time detection of touch event patterns (press-and-hold duration, drag direction, drag distance). The system automatically transitions between T9 predictive input mode and separate character selection mode without requiring manual mode switching, thereby maintaining high input speed while eliminating mode switching complexity
Solution Approach 2:
The input system performs self-diagnosis and self-adjustment by monitoring touch event characteristics to automatically determine when to switch between input modes. The system serves itself by detecting user intent through touch patterns and autonomously selecting the appropriate input mode, eliminating the need for users to manually manage input mode complexity
2Ease of operation
If the user presses the mode switch key several times when inputting a sentence composed of several words, then the desired characters can be selected, but the overall number of key presses increases
Solution Approach 1:
The patent performs preliminary detection of touch event patterns (press-and-hold duration, drag direction, drag distance) to predict user intent before completing the input action. By analyzing the preliminary touch characteristics, the system automatically determines whether to activate T9 mode or separate character selection mode, eliminating the need for separate mode switch key presses and reducing overall input time
3Device complexity
If two or more characters are assigned to each key even after switching to the separate input mode, then the key input unit structure remains simple, but the number of key inputs for character selection increases
Solution Approach 1:
The patent implements dynamic display reconfiguration based on detected touch patterns. When separate character selection mode is activated through drag events, the system dynamically changes the display to show individual characters corresponding to the pressed key, transforming the static multi-character key assignment into a dynamic single-character selection interface, thereby improving character selection efficiency without changing the physical key structure
Data Source
AI summary
Provided is a character input method and apparatus for automatically switching an input mode in a terminal having a touch screen. If a press event occurs in one of key regions displayed in the touch screen, it is determined whether a drag event occurs prior to occurrence of a release event. According to whether the drag event occurs, one of a separate input mode for inputting one of characters of a corresponding character group and a text input mode for inputting a word including one of the characters of the character group is executed. Thus, a user can easily input a character by rapidly selecting a desired input mode.