Scroll Bar Control Using Two Coordinates for Page Selection
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Solution Overview
Problem
In electronic display terminals, especially with a high number of pages and concentrated handwriting added pages, it is difficult to accurately detect and switch to the desired page due to the overlap of page indicators, making it hard to find and display the correct page efficiently.
Innovation Solution
The electronic display terminal employs a scroll bar with an indicator that switches regions based on touch input in both the longitudinal and perpendicular directions, using specific marks to distinguish page positions and allowing the user to extend these marks for easier selection, enabling accurate display of desired pages even when they are concentrated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of pages is increased and handwriting added pages are sequentially present, then the document content is more comprehensive, but it becomes difficult to exactly place the cursor on each sticker and detect the desired page
Solution Approach 1:
The patent introduces a second dimension for touch input by allowing users to touch positions both on the scroll bar (first direction/longitudinal) and away from it (second direction/perpendicular). This dimensional expansion enables the system to distinguish between different types of user intentions: touching on the bar for direct page selection and touching away from the bar for region-based navigation, thereby resolving the precision problem when pages are concentrated.
2Adaptability or versatility
If sticker added pages are concentrated, then more document sections are accessible, but it becomes difficult to distinguish and select individual pages
Solution Approach 1:
The patent introduces an intermediary mechanism - the scroll bar with its unique coordinate system - that mediates between the user and the concentrated pages. By allowing touch input away from the bar, the system creates an intermediate selection mode that operates on document regions rather than individual pages, making it easier to navigate through concentrated handwriting added pages without requiring precise cursor placement on each page indicator.
3Device complexity
If the scroll bar uses only longitudinal direction for page switching, then the interface is simple, but it cannot handle concentrated pages effectively
Solution Approach 1:
The patent maintains interface simplicity by keeping the scroll bar structure unchanged while adding a second dimension to the interaction - the perpendicular distance from the bar. This allows the system to handle concentrated pages effectively by interpreting touches away from the bar as region-based selections, without complicating the visual interface or requiring additional controls.
Data Source
AI summary
An electronic display terminal including a display unit which displays a file including a plurality of pages on a screen for each region of the file, and a scroll bar which includes a bar displayed on a screen and an indicator which indicates a page position of a page including the region displayed on the display unit by a relative position with respect to the length of the bar, wherein the scroll bar switches a region displayed on the display unit based on a position element of a first direction that is a longitudinal direction of the bar and a position element of a second direction which is different from the first direction at a position on a screen touched by a user, and moves the indicator to a position which indicates a page position of a page including the region displayed after the region is switched.