Dynamic Character Size Adjustment for Mobile Input Displays
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Solution Overview
Problem
Conventional mobile communication terminals struggle to provide clear and distinct display of input key characters for users with poor vision, as character sizes vary based on the number of input keys, leading to difficulty in distinguishing the last input number and inefficient use of display space.
Innovation Solution
An apparatus and method that dynamically adjust the display size of input characters by enlarging the last input character by a preset magnification rate while reducing previously input characters to a smaller size, allowing for clear distinction and efficient use of display space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If character size is reduced to display more numbers on the screen, then the quantity of displayed characters increases, but the ease of operation deteriorates due to difficulty in discerning characters for users with poor vision
Solution Approach 1:
The patent applies local quality by making the last input character larger than previous characters. This creates a visual hierarchy where the most recently input character (which is most important for user awareness) is displayed in a larger size, while earlier characters are displayed in a smaller size. This resolves the contradiction by providing both quantity (multiple characters displayed) and ease of operation (last character is easily discernible due to larger size).
Solution Approach 2:
The patent applies dynamics by dynamically adjusting character sizes based on input sequence. When a new character is input, it is displayed in a larger size, and previously displayed characters are automatically reduced in size. This dynamic size adjustment ensures the last input character is always prominent and easily distinguishable, while maximizing the number of characters that can be displayed on the screen.
2Ease of operation
If character size is increased to improve visibility for users with poor vision, then the ease of operation improves, but the quantity of displayed characters decreases
Solution Approach 1:
Instead of uniformly increasing all character sizes, the patent applies local quality by selectively enlarging only the last input character. This allows the system to maintain good visibility for the most important character (the last one) while keeping other characters in a smaller size, thereby maximizing the total number of characters that can be displayed on the screen.
3Device complexity
If uniform character size is used for all input characters, then the ease of manufacture simplifies the display logic, but the reliability deteriorates because the last input number cannot be easily distinguished from preceding numbers
Solution Approach 1:
The patent applies local quality by applying different sizes to different positions in the character sequence. The last input character is displayed in a larger size while previous characters are displayed in a smaller size. This creates a clear visual distinction that improves reliability of input recognition, allowing users to easily identify the last input number and avoid re-inputting it by mistake.
4Productivity
If the display area is fully utilized to show more characters, then the productivity increases, but the ease of operation deteriorates due to smaller character sizes
Solution Approach 1:
The patent resolves this contradiction by using local quality to enlarge only the last input character while keeping other characters in a compact size. This allows the display to maintain high productivity by showing multiple characters on screen, while simultaneously improving ease of operation by making the most recently input character (which users need to verify) clearly visible and easy to discern.
Data Source
AI summary
An apparatus and a method for providing improved character input displays in a mobile communication terminal. When the user inputs a first key, a first key number corresponding to the input key is displayed in an enlarged form on the display unit in the mobile communication terminal. Thereafter, if the user inputs a second key, then the second key number is displayed in the enlarged form of the preset magnification rate and the first key number is reduced to the original size on the display unit. The apparatus and the method enable user with poor vision to discern the last input key number from the preceding key numbers.