Text Input Device Using Segmented Cell Interface
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Solution Overview
Problem
Conventional text-input methods for portable digital devices, such as mapping letters to number keys or using small software keyboards, lead to input errors and hinder portability due to the difficulty in miniaturizing devices and accuracy in text input.
Innovation Solution
A text-input device and method featuring a display unit with a user interface divided into areas of cells, an input unit providing focusing and selecting signals, and a control unit that uses a mapping table to generate control signals for text input, allowing for efficient text input with minimized errors and increased speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If text is mapped to a plurality of number keys, then portability is improved, but input accuracy deteriorates
Solution Approach 1:
The user interface is divided into multiple areas, each containing multiple cells displaying different text characters. This segmentation allows the small display to present multiple character options in an organized manner, improving input accuracy without requiring a large physical keyboard, thus maintaining portability.
Solution Approach 2:
A control unit acts as an intermediary between the input unit and the display unit. It receives input signals, determines the corresponding text character based on a mapping table, and controls the display to show the appropriate character. This intermediary processing enables accurate text input on a small display by mediating between the limited display space and the need for precise character selection.
2Ease of operation
If a software keyboard is displayed via a display unit, then portability is improved, but input accuracy deteriorates
Solution Approach 1:
The software keyboard is segmented into multiple areas, each displaying a subset of text characters. This segmentation strategy allows the small display to present characters in an organized grid format, making it easier for users to locate and select characters accurately without requiring a full-sized physical keyboard, thus maintaining both portability and input accuracy.
3Volume of moving object
If the display unit shows a software keyboard, then device miniaturization is enabled, but input speed deteriorates
Solution Approach 1:
The control unit performs preliminary action by pre-processing input signals and determining the corresponding text characters before they are displayed. This preliminary processing reduces the time needed for character selection and input, thereby increasing input speed despite the limited display size. The mapping table stored in the control unit enables rapid character conversion without requiring users to navigate through a large keyboard layout.
4Volume of moving object
If number keys are used for text input, then device miniaturization is achieved, but input speed deteriorates
Solution Approach 1:
The mechanical keyboard system is replaced with a software-based text input system. Instead of requiring physical keys for each character, the system uses a small set of input units (number keys or touch inputs) combined with software processing to display and select text characters. This substitution enables device miniaturization while maintaining or improving input speed through efficient software-based character conversion and display.
Data Source
AI summary
A text-input device and method is provided. The device includes a display unit that displays a user interface, which is divided into a plurality of areas each including a plurality of cells where predetermined text is displayed, an input unit that includes a plurality of text-input units to provide a focusing signal that focuses on a predetermined cell in the displayed user interface and a selecting signal that selects the focused cell, a user interface providing unit that generates a control signal corresponding to the selected cell with reference to a mapping table according to whether the selecting signal is available, and a control unit that performs a control command based on the control signal, wherein the plurality of text-input units correspond to the areas.