Text Input Device Spatial Candidate Word Selection
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Solution Overview
Problem
Current text input methods on small devices like PDAs and mobile phones are inefficient due to the need for multiple keystrokes and clicks to select predicted words from a list, especially when the intended word is not among the top candidates, leading to increased cognitive load and usability issues.
Innovation Solution
A text input method that predicts candidate words based on context and displays them in a spatial arrangement corresponding to navigational input directions, allowing users to select the intended word directly with a single click using a navigational input device, such as cursor keys or a rocker, by mapping candidates to directional inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If predicted candidate words are displayed in a linear list for selection, then the system can provide word prediction functionality, but the user has to scroll down the list multiple times to reach and select the intended word, increasing the number of keystrokes
Solution Approach 1:
The patent transforms the traditional linear list arrangement of candidate words into a two-dimensional grid layout. This spatial reorganization allows users to navigate to any candidate word using directional keys (up, down, left, right) without sequential scrolling. The grid positions are mapped to corresponding directional key inputs, enabling direct selection of words at any position in the candidate list with minimal keystrokes, thus resolving the contradiction between providing comprehensive word prediction and reducing selection effort.
2Volume of moving object
If the device uses a numeric keypad with multi-tap approach, then the device can be compact in size, but every key is assigned to multiple letters requiring multiple presses to enter each letter
Solution Approach 1:
The system performs preliminary action by predicting the user's intended word before the user completes typing. The word prediction algorithm analyzes the context and partially entered text to generate a list of candidate words in advance. When the user activates the prediction function, the system presents the most likely candidate words, allowing the user to select from pre-computed options rather than manually typing each letter, thus reducing keystrokes while maintaining compact device size.
3Ease of operation
If a dictionary of known words is used with single-tap approach, then the user presses digit keys only once per letter, but the intended word may not be listed in the dictionary requiring separate entry
Solution Approach 1:
The system implements feedback by continuously monitoring user input and adjusting the candidate word list based on contextual analysis. When the user enters a sequence of letters, the system provides feedback in the form of predicted candidate words. If the intended word is not in the dictionary, the context-aware prediction algorithm can still generate relevant candidates based on surrounding text, usage patterns, and linguistic rules, allowing the user to select from contextually appropriate options even when the exact word is unknown or uncommon.
Data Source
AI summary
The present invention relates to a text input device and a method for inputting text, and a computer program for performing the method. A text input device (200) is provided that comprises: a text prediction component for predicting candidate words in accordance with a current text context; a display screen (210) for displaying the predicted candidate words; a data entry device (220) having a navigation means (240) for selecting a direction to move a cursor on the display screen (210); and a processor receiving data from the data entry device (220) upon actuation of the navigation means (240). The processor arranges the candidate words on the display screen (210) in a spatial arrangement that reflects the selectable directions of the navigation means (240). The processor maps the currently displayed candidate words to the corresponding directions and selects a candidate word upon selection of a direction.


