Arrow Key Character Input Method and Device
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Solution Overview
Problem
Current character input methods using arrow keys on terminal equipment are inefficient due to the need for repeated switching among multiple keys and back-and-forth cursor movement, leading to complex operations and low user experience.
Innovation Solution
A character input method and device that queries a letter database upon arrow key triggering, arranging and displaying corresponding letter sets in a single direction, allowing the cursor to be moved in one direction for selection, thereby simplifying the input process and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a soft keyboard with 26 letters is displayed and cursor movement is used for character selection, then character input can be implemented, but repeated switching among arrow keys and back-and-forth cursor movement occurs, resulting in complex operation and low input efficiency
Solution Approach 1:
The patent divides the 26 letters into multiple letter sets and assigns each set to a specific arrow key direction (up, down, left, right). This segmentation allows users to select characters by pressing a single arrow key direction rather than switching among multiple keys, thereby simplifying the operation and improving input efficiency.
Solution Approach 2:
The patent extracts the letter selection function from the traditional two-dimensional soft keyboard and relocates it to a one-dimensional arrow key sequence. By taking out the cursor movement mechanism from the conventional grid layout and reorganizing letters into directional sequences, the system eliminates the need for back-and-forth cursor movement and repeated key switching.
2Adaptability or versatility
If all 26 letters are displayed on the screen, then character selection is available, but screen shielding occurs and cursor movement becomes complex
Solution Approach 1:
The patent segments the letter display into multiple sets corresponding to different arrow key directions. Instead of displaying all 26 letters at once, the system displays letters in groups that can be accessed by pressing specific arrow keys, reducing screen clutter and simplifying cursor movement to a single direction.
Solution Approach 2:
The patent transitions from a two-dimensional soft keyboard layout to a one-dimensional arrow key sequence. By organizing letters into directional sequences rather than a grid, the system reduces the dimensional complexity of cursor movement from two-directional (up/down and left/right) to a simplified single-direction progression, eliminating screen shielding issues.
Data Source
AI summary
A character input method and device based on an arrow key are provided. The method of the present invention includes: querying a letter database according to triggering of a arrow key and obtaining a letter set corresponding to the arrow key; arranging the letter set corresponding to the arrow key according to a predetermined rule, and partially or fully spreading and then displaying the letter set in a display region; displaying a selection cursor at a default position in the display region, where the selection cursor is used for identifying a currently selected letter; and inputting the letter identified by the selection cursor into a character input region according to a predetermined selection rule. Embodiments of the present invention are mainly applied to a character input process based on an arrow key.