Screen Display Lightness Control for Energy Saving
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Solution Overview
Problem
Modern electronic devices with improved performance and high-resolution displays consume excessive current when displaying webpages with multimedia content, particularly when a user is less interested in areas outside the video content due to the characteristics of AMOLED screens, which consume more current for white screens than dark screens.
Innovation Solution
An electronic device with a processor that identifies areas of interest on the screen, produces separate frames for video and non-video areas, adjusts the lightness of the non-video areas based on device state factors like battery level and external brightness, and synthesizes these frames to reduce current consumption while maintaining backlight brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the lightness of the non-video area is reduced to save energy, then current consumption is reduced, but the user may miss important information in that area
Solution Approach 1:
The patent applies local quality by differentiating the treatment of different screen areas. The video area maintains its original lightness while the non-video area has its lightness adjusted separately. This allows the system to reduce current consumption in the non-video area without affecting the visibility and information delivery in the video area, thus resolving the contradiction between energy saving and information preservation.
2Ease of operation
If the lightness of the non-video area is adjusted to focus user attention, then user focus on video content is enhanced, but the overall screen visibility may be compromised
Solution Approach 1:
The patent implements local quality by applying different lightness adjustments to different areas of the screen. The video area retains its original lightness to ensure overall screen visibility, while the non-video area has its lightness reduced to guide user focus toward the video content. This spatial differentiation resolves the contradiction between enhancing user focus and maintaining overall visibility.
3Use of energy by moving object
If the browser engine brightness is controlled independently from the display module, then energy consumption is optimized, but the control complexity increases
Solution Approach 1:
The patent applies segmentation by separating the brightness control into two independent layers: the display module level and the browser engine level. The display module maintains overall screen brightness settings, while the browser engine independently adjusts the lightness of specific areas (video vs. non-video). This segmentation allows energy optimization through selective dimming without requiring complete redesign of the display control system, thus managing complexity while achieving energy savings.
Data Source
AI summary
An electronic device according to various embodiments may include: a display, and a processor, in which the processor is configured to: identify a first area of a screen in which a video is played, produce a first frame corresponding to the first area, produce a second frame corresponding to a second area different from the first area, determine a lightness of the second frame based on an input factor related to a state of the electronic device, synthesize the first frame having an unchanged lightness and the second frame having a changed and determined lightness, and control the display to display the synthesized frame on the display.