Display Layer Compositing for Dynamic Background Lightening
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Solution Overview
Problem
Electronic devices with displays face challenges in achieving a desired aesthetic appearance and efficient processing power consumption, particularly when applying lightening or darkening effects to user interfaces, especially when the background is dynamic, such as a video feed.
Innovation Solution
A method of encoding lightening or darkening effects into display layers based on relative depth, using opacity values and color values, and applying these effects during compositing with additional layers, reducing processing requirements by performing intensive operations only when user interface elements change and applying effects frequently with low power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If lightening or darkening effects are applied to user interface elements on a display, then the aesthetic appearance is improved, but the processing power consumption increases
Solution Approach 1:
The patent pre-calculates and stores compositing results for different background brightness conditions. When displaying UI elements, instead of performing intensive real-time compositing operations, the system retrieves pre-computed results that match the current background conditions, significantly reducing processing power consumption while maintaining aesthetic quality
Solution Approach 2:
The patent applies different compositing strategies based on background brightness parameters. For bright backgrounds, lightening effects are applied; for dark backgrounds, darkening effects are applied. This parameter-based approach optimizes the balance between aesthetic appearance and processing efficiency by selecting appropriate effects based on current display conditions
2Illumination intensity
If lightening or darkening effects are applied to user interface elements, then the visual quality is improved, but the processing complexity increases
Solution Approach 1:
The system performs complex compositing operations in advance and stores the results. During actual display, it simply retrieves and applies pre-computed compositing results, transforming a complex real-time processing task into a simple lookup and display operation
Solution Approach 2:
The patent divides the display into different regions (UI elements vs. background) and applies different processing strategies to each. Background processing is done separately and in advance, while UI element rendering uses the pre-processed background information, reducing overall processing complexity
3Manufacturing precision
If real-time compositing operations are performed for every frame, then the visual accuracy is improved, but the power consumption increases
Solution Approach 1:
Instead of performing compositing operations on every frame, the patent implements periodic updates only when background conditions change significantly. The system monitors background brightness changes and triggers compositing operations only when necessary, reducing power consumption while maintaining visual accuracy during stable conditions
Solution Approach 2:
The system pre-computes compositing results for various background conditions and stores them for quick retrieval. This eliminates the need for continuous real-time compositing operations, reducing power consumption while maintaining visual accuracy by using pre-calculated results that match current conditions
Data Source
AI summary
An electronic device may include a display and a camera. The camera may capture images of a physical environment around the electronic device. The images of the physical environment may sometimes be displayed on the display as a background layer (e.g., for a pass-through video feed). A user interface may be displayed over the pass-through video feed. Operating the display may include rendering one or more layers of one or more user interface elements, with at least one user interface element being encoded with a lightening or darkening effect. The one or more layers of one or more user interface elements may be composited together and subsequently composited with the pass-through video feed. Compositing the user interface composite with the pass-through video feed may cause the encoded lightening or darkening effect to be applied to the pass-through video feed.