Non-linear brightness control for user devices
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Solution Overview
Problem
User devices face challenges in providing a consistent high-quality viewing experience due to varying ambient light conditions, as existing brightness control methods can be harsh and fail to adapt effectively to changes in light levels.
Innovation Solution
Implementing a non-linear brightness control system for user devices that adjusts lighting based on a brightness scale with varying current increments, using light emitting diodes (LEDs) and incorporating historical brightness data and ambient light conditions to minimize harshness and improve user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If linear brightness control is used, then the control mechanism is simple, but the viewing experience quality deteriorates in varying ambient light conditions
Solution Approach 1:
The patent transforms the linear brightness control parameter into a non-linear parameter scale where equal user adjustments produce varying increments of brightness change. This allows the system to adapt to ambient light conditions while maintaining a simple user interface, resolving the contradiction between control simplicity and viewing quality.
Solution Approach 2:
The brightness control system dynamically adjusts the increment size based on the current brightness level and ambient light conditions. Lower increments are used at lower brightness levels and in darker environments, while higher increments are used at higher brightness levels and in brighter environments, making the system adaptive rather than static.
2Illumination intensity
If high brightness levels are maintained, then visibility is improved, but harshness increases in low light environments
Solution Approach 1:
The patent implements a non-linear brightness parameter scale where the relationship between control steps and actual brightness output is transformed. This allows the system to use smaller, less harsh brightness increments in low light environments while maintaining visibility, and larger increments in bright environments where harshness is less of an issue.
Solution Approach 2:
The system applies different brightness increment qualities to different operating conditions. In low light environments, smaller and gentler brightness increments are applied locally, while in bright environments, larger increments are acceptable. This localized adaptation reduces harshness where it matters most.
3Adaptability or versatility
If ambient light sensing is implemented, then adaptability to environment is improved, but device complexity increases
Solution Approach 1:
The system uses the device's existing ambient light sensor to automatically detect and adapt to environmental lighting conditions. The sensor data feeds into the non-linear brightness control algorithm, enabling the system to self-adjust without requiring additional hardware or complex user configuration, thus achieving adaptability with minimal added 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 non-linear brightness control system enhances the viewing experience by minimizing harshness in low light environments and optimizing brightness levels over time, ensuring a consistent and high-quality display under different ambient conditions.
Implementation Method 1
using light emitting diodes (LEDs)
Data Source
AI summary
This disclosure relates to systems and methods adjusting lighting system brightness in a non-linear manner. The brightness control may be based on a non-linear function that increases brightness in smaller increments at lower brightness levels than at higher brightness levels. In another embodiment, the lighting system brightness may be ramped down over a period of time to account when the user device is exposed to low light conditions. The ramp down may be based, at least in part, on changes in visual acuity in low light conditions over time.