Auto Brightness Table Generation for Display Power Optimization
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Solution Overview
Problem
Electronic devices face challenges in efficiently managing display brightness to conserve power while ensuring user visibility, especially as display sizes increase, due to limitations in battery capacity and the need for automatic brightness adjustment based on external illumination.
Innovation Solution
An electronic device with a display, illumination sensor, and processor that generates a user-specific auto brightness table by adjusting luminance points and illumination values, allowing for customizable brightness settings based on user input and external illumination levels, thereby optimizing power consumption and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the display size is increased, then the visual information output is improved, but the power consumption is increased
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the luminance level of the display based on external illumination conditions. The processor modifies the luminance parameter according to the illumination level detected by the sensor, thereby reducing power consumption in low-light environments while maintaining visibility when needed. This is achieved by mapping illumination levels to corresponding luminance levels through a brightness table.
2Use of energy by moving object
If the brightness is automatically adjusted according to external illumination, then the power consumption is reduced, but the user customization capability is limited
Solution Approach 1:
The patent implements dynamics by allowing the brightness table to be dynamically modified based on user preferences. When the user adjusts the luminance level through the UI, the processor updates the brightness table to reflect this new preference. This creates a dynamic system that adapts to both environmental conditions and user preferences, resolving the contradiction between automatic adjustment and customization capability.
Solution Approach 2:
The patent applies feedback by monitoring user interactions with the brightness adjustment UI and using this information to update the brightness table. The system continuously adapts to user preferences by detecting adjustments and modifying the mapping between illumination levels and luminance levels accordingly. This feedback mechanism enables the system to maintain power efficiency while respecting user customization needs.
3Measurement precision
If the number of luminance points is increased, then the brightness control precision is improved, but the power consumption calculation complexity is increased
Solution Approach 1:
The patent applies segmentation by dividing the brightness control range into discrete luminance points that are stored in a brightness table. Instead of continuously adjusting brightness, the system segments the range into manageable levels (e.g., 100, 200, 300 nits). This segmentation simplifies the power consumption calculation while maintaining sufficient precision for practical purposes, resolving the contradiction between precision and complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables efficient power management by dynamically adjusting display brightness, improving user satisfaction and extending battery life by creating a personalized auto brightness table that adapts to user preferences and environmental conditions.
Implementation Method 1
a sensor configured to measure external illumination
Data Source
AI summary
An electronic device is provided. The electronic device includes a display, a sensor, a memory storing a reference brightness table including one-to-one matching between luminance points indicating luminance values corresponding to a luminance level of the display and reference illumination values in conjunction with the external illumination, and a processor. The processor controls the display at a first luminance corresponding to a first illumination measured by the sensor based on the reference brightness table, when a user input changing the display to a second luminance in a state where the first illumination is maintained is received, decreases or increases the number of first luminance points included between a second illumination adjacent to the first illumination and the first illumination and generates a user brightness table of matching illumination values between the first illumination and the second illumination with the decreased or increased first luminance points one-to-one.