Touch Screen Hindi Keyboard Segmentation for Fast Input
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Solution Overview
Problem
Conventional touch screen keyboards for inputting Hindi characters are inconvenient due to small key sizes and slow input speed, as they require repeated key presses for character entry.
Innovation Solution
A touch screen apparatus and method that displays a first key set with consonants and a combination lock key, and upon selecting a consonant, a second key set with vowels is displayed, allowing for efficient combination and entry of Hindi characters by pressing and releasing or dragging keys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a conventional touch keyboard layout is used on a limited-size touch screen, then the keyboard can be displayed, but the key size becomes small making it inconvenient for users to view and touch keys
Solution Approach 1:
The keyboard is divided into multiple pages, with each page displaying a subset of keys. This segmentation allows the touch screen to display larger, more visible keys by showing only a portion of the complete keyboard at any given time, resolving the contradiction between limited screen area and key visibility.
Solution Approach 2:
The patent introduces a temporal dimension by implementing multi-page keyboard navigation. Instead of compressing all keys into a single spatial layout, the system distributes keys across multiple pages that users can navigate through, effectively adding a time-based dimension to the keyboard interaction model.
2Adaptability or versatility
If a 3×4 layout with multiple letters per key is used, then more characters can be accommodated, but character input speed becomes slow due to repeated key presses
Solution Approach 1:
The patent segments the character input process into distinct phases: selecting the consonant on the first page, then selecting the vowel on the second page. This segmentation eliminates the need for repeated key presses required in conventional layouts, significantly improving input speed while maintaining comprehensive character coverage.
Solution Approach 2:
The system performs preliminary action by displaying all available vowel options immediately after the user selects a consonant. This allows users to directly select their desired character combination without needing to repeatedly press the same key to cycle through options, as in traditional layouts.
3Adaptability or versatility
If all keys are displayed simultaneously on the touch screen, then all characters are accessible, but the interface becomes cluttered and difficult to navigate
Solution Approach 1:
The keyboard interface is segmented into multiple pages, with the first page displaying consonants and the second page displaying vowels. This segmentation reduces the number of keys visible at any one time, simplifying the interface while maintaining access to all character combinations through systematic navigation.
Solution Approach 2:
The patent implements dynamic key visibility where the set of displayed keys changes based on user interaction. After selecting a consonant, the system dynamically transitions to display only the relevant vowel keys, reducing interface complexity and guiding the user through the input process step by step.
Data Source
AI summary
An apparatus and method for inputting Hindi characters in a terminal. A touch screen displays a first key set and a second key set. The first key set includes first letter keys with all consonants and a combination lock key for entering a compound consonant. The second key set includes a first letter selected from the first key set and second letter keys with predetermined vowels combinable with the first letter. Upon selection of the first letter from the first key set, a controller controls the touch screen to display the second key set and receives at least one letter from the first and second key sets.