POS Display Segmentation for Readable Text Output
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Solution Overview
Problem
Conventional commodity sales data processing devices, such as POS terminals, face challenges in legibly displaying information that exceeds the character limit of their display units, often resulting in scrolling issues that make it difficult to read and understand the displayed content.
Innovation Solution
The implementation of a display control mechanism that determines if the number of characters in a row exceeds the display unit's capacity, allowing for the simultaneous display of first information and a mark indicating additional information, with the first information being replaced by the remaining information after a predetermined time, ensuring clear and readable output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a small display device is used to display information, then the device size is reduced, but the number of characters that can be displayed at once is limited
Solution Approach 1:
The patent divides long information into multiple segments (first information and second information) to be displayed sequentially. The display control unit splits the information based on character count limits and displays them in portions, allowing small displays to convey more total information over time without requiring a larger physical display area.
2Loss of information
If information is displayed by scrolling on a small display unit, then all information can be shown, but readability deteriorates due to moving display and afterimages
Solution Approach 1:
The patent implements periodic display switching where the display control unit alternates between showing first information and second information at predetermined intervals. This periodic action allows complete information to be conveyed over time while maintaining static, readable displays at any given moment, eliminating scrolling and afterimage issues.
Data Source
AI summary
A commodity sales data processing device in an embodiment includes a display unit configured to display information, first determining means for determining whether the number of characters of information that should be displayed in one row exceeds the number of characters that can be displayed in one row of the display unit, and display control means for, if the first determining means determines that the number of characters of the information that should be displayed in one row exceeds the number of characters that can be displayed in one row of the display unit, simultaneously displaying first information that can be displayed in one row of the display unit and a mark indicating that second information that should be further displayed in the same row is present and, after displaying the first information for a predetermined time, displaying the second information instead of the first information and the mark.