Segmented Display Luminance Control for Battery Conservation
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Solution Overview
Problem
Existing portable devices face challenges in conserving battery life due to high power consumption by display screens, particularly those with large and bright displays, as current methods to reduce power consumption can impact user experience.
Innovation Solution
The method involves segmenting the display into areas of varying importance, selectively setting the luminance of each segment based on its importance level and anticipated battery usage, which can be determined by user inputs, environmental conditions, and biometric data, allowing for dynamic power allocation to prioritize critical information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display luminance is increased to improve user experience, then the display quality is improved, but the battery power consumption increases
Solution Approach 1:
The display is divided into multiple segments with different importance levels. Each segment can independently control its luminance, allowing critical information to be displayed at high brightness while non-critical areas maintain lower luminance, thereby reducing overall power consumption while preserving user experience for important content.
Solution Approach 2:
Different segments of the display are assigned different quality characteristics based on their importance. High-importance segments receive higher luminance and power allocation, while low-importance segments use reduced luminance. This local differentiation optimizes the balance between display quality and energy consumption.
2Illumination intensity
If the display is kept at high luminance to ensure visibility of all information, then the user experience is maintained, but the battery life is reduced
Solution Approach 1:
The system dynamically adjusts the luminance of different display segments based on real-time conditions including user interaction patterns, environmental lighting, and battery charge levels. This dynamic adaptation allows the display to maintain high luminance only when and where necessary, extending battery life while preserving user experience during critical moments.
Solution Approach 2:
The display system periodically reassesses the importance of different segments and adjusts luminance accordingly. During periods of user inactivity, non-critical segments reduce luminance to conserve battery, while maintaining visibility of important information. This periodic adjustment optimizes the balance between display quality and battery duration.
3Use of energy by moving object
If the display processes pixels to filter energy-intensive aspects, then the power consumption is reduced, but the user experience is compromised
Solution Approach 1:
Instead of uniformly processing all pixels to filter energy-intensive aspects, the display is segmented into importance-based zones. Only specific segments undergo pixel filtering processing, while high-importance segments maintain full visual fidelity. This selective approach reduces overall power consumption without significantly impacting user experience for critical information.
Data Source
AI summary
A method for controlling a display includes segmenting the display; assigning an importance level to at least one of the segments; and selectively setting the luminance of said segment in dependence on its importance level.