Dynamic Screen Brightness Adjustment via Ambient Light Feedback
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Solution Overview
Problem
Conventional methods for dynamically adjusting screen brightness rely on a fixed adjustment reference, leading to distortions in screen brightness that fail to accurately match the changing ambient light levels, resulting in insufficient brightness and discomfort for users.
Innovation Solution
A method that continuously monitors ambient light levels and adjusts screen brightness by recalculating the brightness adjustment factor based on a dynamic reference, using the current screen brightness and adjustment factor to ensure accurate alignment with ambient light changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed reference point is used for brightness adjustment, then the adjustment process is simple, but the screen brightness becomes distorted and does not accurately match ambient light changes
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed reference point into a dynamic reference that moves with the current brightness level. Instead of using a predetermined reference point, the system continuously updates the reference based on the current screen brightness and corresponding ambient light level, allowing the adjustment mechanism to adapt dynamically to changing conditions and prevent brightness distortion.
Solution Approach 2:
The patent implements feedback by continuously monitoring the current screen brightness and using this information to update the reference ambient light level. The system feeds back the actual brightness state to the control algorithm, which then adjusts the reference point accordingly, creating a closed-loop control system that maintains accuracy without requiring complex predetermined calibration.
2Ease of operation
If the brightness adjustment factor is calculated based on original reference values, then the calculation is straightforward, but the adjustment becomes inaccurate after multiple changes
Solution Approach 1:
The patent applies preliminary action by pre-establishing the relationship between screen brightness and ambient light level before adjustment begins. The system determines the current ambient light level corresponding to the present screen brightness in advance, using this as the new reference point for subsequent adjustments. This preliminary determination ensures that each adjustment cycle starts from an accurate baseline.
Solution Approach 2:
The patent implements parameter changes by dynamically updating the reference ambient light level parameter based on current operating conditions. Instead of using fixed original reference values, the system changes the reference parameter to reflect the current screen brightness state, ensuring that the brightness adjustment factor calculation remains accurate even after multiple adjustments.
3Device complexity
If a single reference baseline is used, then the adjustment model is simple, but it cannot adapt to continuous brightness changes
Solution Approach 1:
The patent transforms the static single reference baseline into a dynamic reference that evolves with each adjustment cycle. The reference ambient light level is continuously updated to match the current screen brightness state, enabling the adjustment model to adapt to continuous ambient light changes while maintaining relative simplicity in the adjustment algorithm.
Data Source
AI summary
A method of dynamically adjusting screen brightness is adapted for a screen to adjust the screen brightness. First, an original ambient light level and an original brightness adjustment factor are determined. Then, a relationship curve of an ambient light level and a brightness adjustment factor is determined. The current ambient light level is continuously monitored and compared with the original ambient light level to determine if the current ambient light level is equal to the original ambient light level. If not equal, a brightness adjustment factor corresponding to the current ambient light level is obtained based on the relationship curve, and the screen brightness is adjusted based on the brightness adjustment factor. The obtained screen brightness and the corresponding brightness adjustment factor are set to be the original screen brightness and the original brightness adjustment factor, and thus the background brightness is monitored again and the screen brightness is adjusted.