Mobile Terminal Keypad Character Prediction Mechanism
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Solution Overview
Problem
Mobile terminal keypads with smaller key buttons than personal computer keyboards inconvenience users by making character input more difficult due to the smaller number or size of keys.
Innovation Solution
A mobile terminal with a touchscreen displaying a keypad featuring key buttons that, when touched, allow users to input intrinsic alphabets and predict recommended words, enabling easier character input by displaying subsequent alphabets of the predicted word upon subsequent touches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the number and size of key buttons on mobile terminal keypad are reduced to make the device more compact, then the portability and compactness of the mobile terminal are improved, but the ease of operation for character input deteriorates
Solution Approach 1:
The system performs preliminary action by predicting the user's intended word based on the first input character and displaying the complete predicted word. This allows the user to confirm or correct the prediction rather than typing the entire word, effectively reducing the number of key presses needed while maintaining ease of operation despite smaller key size
Solution Approach 2:
The system implements feedback by displaying the predicted word immediately after the user inputs the first character. This visual feedback allows the user to verify if the prediction matches their intent, and if not, they can input additional characters to correct it. This feedback mechanism compensates for the reduced tactile feedback from smaller keys
Data Source
AI summary
A digital television including a display unit configured to display a keypad including a plurality of key buttons which are assigned with different alphabet characters, respectively, and a text window; and a controller configured to receive a first signal selecting a first key button of the plurality of key buttons, display a first alphabet character assigned with the first key button in the text window, and display a first sub key button assigned with a second alphabet character on a first region adjacent to the first key button of the keypad, in response to the first signal, and receive a second signal selecting the first sub key button, and display the second alphabet character next to the first alphabet character in the text window, and display a second sub key button assigned with a third alphabet character on the first region adjacent to the first key button of the keypad, in response to the second signal. The second alphabet character is predicted as a next character of the first alphabet character, and the third alphabet character is predicted as a next character of the first and second alphabet characters.