Context-Aware Display Power Saving via Selective Brightness
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Solution Overview
Problem
OLED displays consume significantly more power when showing bright images compared to TFT-LCDs, leading to increased energy usage, and existing power-saving techniques often result in portions of the display becoming invisible or near-invisible to the user.
Innovation Solution
A display information converting system and apparatus that incorporates a context-showing module and a power-saving conversion module to determine the relevance of each element in an image, converting display information to reduce power consumption while ensuring the image remains visible and contextually meaningful to the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the brightness of the entire display image is reduced to save power, then power consumption is reduced, but the visibility and context of important elements deteriorate
Solution Approach 1:
The patent applies local quality by differentiating the treatment of display elements based on their importance. Important elements (such as focused windows, active text fields, and relevant UI components) maintain their original brightness, while less important elements (background areas, inactive regions) have their brightness reduced. This selective brightness adjustment preserves the visibility and context of critical information while reducing overall power consumption of the OLED display.
2Use of energy by moving object
If only the focused area is kept bright while other areas are darkened, then power consumption is reduced, but the context and overall understanding of the display content is lost
Solution Approach 1:
The patent segments the display image into multiple importance levels rather than treating it as a uniform area. The context-showing module analyzes the display content and categorizes different regions as important or less important based on user interaction patterns, window focus states, and content relevance. This segmentation enables differential brightness control where important elements retain full brightness for context preservation, while less important areas are dimmed to save power.
3Use of energy by moving object
If display elements are reduced in size to save power, then power consumption is reduced, but the readability and user experience deteriorates
Solution Approach 1:
The patent applies local quality by maintaining the original size of important display elements (such as text in active windows, buttons, and interactive elements) while reducing or eliminating the display of less important elements. The system dynamically adjusts element size based on their importance classification, ensuring that elements critical for user interaction and information comprehension retain their full size and readability, while peripheral or less critical content is minimized or hidden.
Data Source
AI summary
A context-showing and power-saving display information converting system and a corresponding apparatus are provided for lowering the power consumption of displaying images on a pixel self-emissive display device. The display information converting system includes a context-showing module and a power-saving conversion module. The context-showing module receives display information that describes the content of an image, wherein the display information includes one or more elements, and each element corresponds to a plurality of pixels displayed by a display device. In addition, the context-showing module determines a relevance of the one or more elements according to the viewing interest of the user. The power-saving conversion module converts the display information in unit of the one or more elements according to the relevance and provides the converted display information to the display device.