UI Item Transparency Adjustment for Scroll End Detection
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Solution Overview
Problem
Touch-based computing devices, such as tablets and smartphones, lack a clear indication to users when there are no more user interface items to be displayed in a particular direction, leading to unnecessary screen interactions.
Innovation Solution
A computing device and control method that adjust the transparency, contrast ratio, and contrast resolution of user interface items based on user touch input, using formulas like New_x=(x^2/2−x+1)*255 to inform users when no additional items are available for scrolling, thereby enhancing user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If UI items are displayed with normal transparency, then user interface visibility is maintained, but users cannot distinguish when no more items are available for scrolling
Solution Approach 1:
The patent applies transparency changes (a visual property similar to color) to indicate scroll availability. When no more UI items are available in the current direction, the display unit increases the transparency of the current UI items, creating a visual distinction that informs users about the scroll state without adding complex mechanical components.
Solution Approach 2:
The patent changes the transparency parameter of displayed UI items based on scroll availability. The controller monitors touch input directions and adjusts the transparency parameter accordingly - maintaining normal transparency when items are available and increasing transparency when no more items exist in that direction, thus conveying information through parameter modification.
2Loss of information
If transparency is increased to indicate no more items, then user feedback is improved, but visual clarity of UI items deteriorates
Solution Approach 1:
The patent applies different transparency levels to different regions or states of the UI. Specifically, only the current UI items that need to indicate scroll availability have their transparency increased, while other UI items maintain their normal display quality. This localized application preserves overall UI clarity while providing necessary feedback.
Solution Approach 2:
The patent carefully controls the transparency parameter adjustment to balance information conveyance and visual clarity. By modifying only the transparency parameter (rather than completely obscuring items) and applying it selectively based on scroll availability, the system provides clear directional information while maintaining sufficient UI item visibility for user recognition.
Data Source
AI summary
A computing device including a display unit to display a screen, a touch input to receive a user's touch input on the display unit, and a controller to control the display unit to display at least a part of a plurality of user interface (UI) items on the screen with a predetermined degree of transparency, to scroll the UI items in a predetermined direction and to sequentially display the UI items on the screen according to the user's touch input, and to increase the degree of transparency of the UI items if the UI items are not scrolled any more.