Portable Device Display Contrast Control via Dynamic Color Adjustment
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Solution Overview
Problem
Portable devices struggle to effectively display screen configuration elements like text or icons on a background image due to potential obscuration, leading to unclear information transfer.
Innovation Solution
A method and device that calculate and control the difference in expression values, such as color and lightness, between screen configuration elements and the background image to ensure clear display, using a controller to determine and apply optimal expression values for improved visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a background image is used on the display unit, then the visual appeal and user interface design are improved, but the screen configuration elements (text, icons) may be obscured and information display clarity deteriorates
Solution Approach 1:
The patent applies color changes by automatically adjusting the expression values (color and lightness) of screen configuration elements based on the background image characteristics. The controller calculates the difference between the element's expression value and the background image's expression value, then modifies the element's color and lightness to ensure sufficient contrast and prevent obscuration, thereby maintaining both design flexibility and information clarity
Solution Approach 2:
The patent implements parameter changes by dynamically modifying the expression parameters (color value and lightness) of screen configuration elements. The controller computes the difference between the element parameters and background image parameters, then adjusts the element parameters accordingly to optimize visibility. This automatic parameter adjustment ensures that information remains clearly visible regardless of the background image used
2Device complexity
If the expression value of screen configuration elements is kept constant, then the manufacturing and control process is simplified, but the visibility and clarity of information display deteriorates when background images vary
Solution Approach 1:
The patent applies self-service by enabling the display system to automatically adjust element expression values without requiring manual intervention. The controller autonomously calculates the difference between element and background image expression values and adjusts the element parameters accordingly. This self-adjusting mechanism maintains display reliability across various background images while keeping the control process relatively simple
Solution Approach 2:
The patent implements feedback by using the calculated difference between element expression values and background image expression values to automatically adjust element parameters. The controller continuously monitors the contrast situation and modifies element color and lightness based on this feedback, ensuring reliable information display adaptability to different background images
Data Source
AI summary
A method and a portable device controls output of a display unit to display information accurately and clearly regardless of a background image. Disclosed is an arrangement for calculating a difference between an arbitrary expression value of an arbitrary screen configuration element to be displayed on a given area of the background image and an actual expression value of the given area of the background image. Each expression value includes at least one of a color and lightness. The arrangement automatically selects the expression value of the screen configuration element based on the calculation result. The screen configuration element is displayed at the given area of the background image based on the selected arbitrary expression value.