Numeric Value Display Changing Rate for Usability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current image forming apparatuses, such as duplicators and printers, are difficult for aged and handicapped persons to operate due to complex interfaces and short increment unit times when continuously pressing buttons, which complicates the operation of magnification and numeric value configuration.
Innovation Solution
A displaying device with an increasing and decreasing unit for numeric value instructions, a numeric value displaying unit for continuous change, and a changing unit that adjusts the rate of continuous change based on operator input, allowing for easier operation by aged and handicapped persons by modifying the change rate according to the voice guide mode or normal mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the increment unit time of data is shortened to improve productivity during continuous button pressing, then the productivity increases, but the ease of operation deteriorates for aged and handicapped persons
Solution Approach 1:
The patent applies dynamics by making the increment unit time variable rather than fixed. The control unit dynamically adjusts the increment unit time based on whether a predetermined period has elapsed since the last operation. When the period has elapsed, a longer increment unit time is used; when it has not elapsed, a shorter increment unit time is used. This dynamic adjustment allows the system to adapt to different operation patterns, improving both productivity during rapid operations and ease of operation for aged and handicapped persons during deliberate operations.
2Productivity
If the operation panel uses frequent up and down buttons for quick configuration, then the productivity improves, but the device complexity increases making it harder to understand
Solution Approach 1:
The patent applies parameter changes by modifying the time parameter (increment unit time) based on the operation history. The control unit changes the parameter of increment unit time according to whether a predetermined period has elapsed since the last operation. This parameter change allows the operation panel to maintain its simple button interface while achieving rapid configuration through intelligent timing-based adjustments to the increment rate.
Data Source
AI summary
Such a displaying device that can be easily operated by aged persons and handicapped persons, and an image forming apparatus using the same will be provided. Upon continuously operating an upper button for the predetermined period of time, a set value of a magnification is changed at intervals of numeric change that are different from each other between a voice guide mode activated by a voice guide button and a normal mode. At this time, it is configured in such a manner that the interval of numeric change for the normal mode is smaller than the interval of numeric change for the voice guide mode, i.e., the changing rate of the set value of the magnification for the normal mode is larger than that for the voice guide mode.