Self-Luminous Display Power Saving via Active Region Segmentation
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Solution Overview
Problem
Self-luminous displays, such as OLEDs, face challenges in power conservation as their power consumption is proportional to the number and brightness of illuminated pixels, leading to inefficiencies, especially in battery-driven devices where power savings are crucial.
Innovation Solution
A method and system that determine active and inactive regions on a display screen, selectively dimming or turning off inactive areas while maintaining active regions at full brightness, using criteria like user interaction, screen geometry, and sensor feedback to reduce energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all pixels are illuminated to maintain display functionality, then display performance is preserved, but power consumption increases
Solution Approach 1:
The display screen is divided into multiple zones with different brightness levels. The system identifies active regions containing displayed content and inactive regions without content, applying different illumination intensities to each zone. This segmentation allows the display to maintain functionality in active areas while reducing power consumption in inactive areas.
Solution Approach 2:
Different regions of the display are assigned different quality characteristics based on their functionality. Active regions maintain full brightness and color accuracy to preserve display performance, while inactive regions are dimmed or turned off to reduce power consumption. This local differentiation resolves the contradiction by applying quality only where necessary.
2Use of energy by moving object
If inactive portions are turned off to save power, then power consumption decreases, but display coverage is reduced
Solution Approach 1:
The display system dynamically adjusts the boundaries between active and inactive regions based on real-time content analysis and user interaction patterns. As content moves or changes across the screen, the system recalculates which regions should remain illuminated, ensuring that display coverage adapts to current needs while maintaining power savings.
Solution Approach 2:
The system incorporates feedback mechanisms to monitor user interaction with different display regions. By tracking where users look and interact most frequently, the system can optimize the placement of active regions to ensure critical content remains visible while minimizing power consumption. This feedback loop prevents excessive reduction of display coverage.
3Use of energy by moving object
If brightness is reduced in inactive areas, then power consumption decreases, but visibility is compromised
Solution Approach 1:
The system changes the illumination parameter selectively across different display regions rather than uniformly adjusting overall brightness. Inactive regions experience reduced illumination intensity to save power, while active regions maintain optimal brightness levels. This parameter differentiation allows power consumption to decrease without compromising the visibility of important content.
Data Source
AI summary
A power saving method for self-luminous displays and an apparatus thereof, comprises determining active and inactive portions of a display screen. The inactive portions of the display screen are modified in accordance with criteria to save power by reducing energy consumption of the inactive portions while the active portions remain powered.