UV Sensor Display Brightness Update
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Solution Overview
Problem
Existing computing devices with displays experience delays in adjusting brightness levels due to the need for ambient light sensor activation and sampling, which can be unsatisfactory in situations requiring quick brightness adjustments, such as outdoor use in bright conditions.
Innovation Solution
Incorporating a UV light sensor to detect UV radiation levels and update the display brightness setting from an indoor to an outdoor level without using ambient light sensor data, allowing the display to activate immediately at the updated brightness setting when UV radiation exceeds a threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ambient light sensor is activated and sampling is performed to adjust display brightness, then brightness adjustment accuracy is improved, but response time increases causing user experience delays
Solution Approach 1:
The system pre-activates the ambient light sensor and performs sampling before the user actually needs to view the display. This preliminary action ensures that brightness data is already available when the display needs to be activated, eliminating the delay between display activation and brightness adjustment.
Solution Approach 2:
The system compensates for potential brightness adjustment delays by proactively gathering ambient light data and preparing brightness settings in advance. This cushioning approach ensures that when the display becomes active, the brightness is already optimized for current lighting conditions.
2Reliability
If ambient light sensor activation and sampling are performed, then display brightness control is improved, but battery life is reduced due to additional sensor operation
Solution Approach 1:
The ambient light sensor is activated only during specific conditions (such as when the device is likely to be used or when lighting conditions are expected to change), rather than continuously. This preliminary activation approach maintains reliable brightness control while minimizing unnecessary sensor operation and energy consumption.
3Use of energy by moving object
If display activates at default indoor brightness setting, then power consumption is reduced, but visibility is insufficient in outdoor bright conditions
Solution Approach 1:
The system detects UV radiation levels in advance and proactively adjusts the display brightness setting to outdoor levels before the user transitions to outdoor environments or activates the display. This ensures the display is immediately visible at appropriate brightness levels without requiring the user to manually adjust settings or experience delayed automatic adjustment.
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
This solution enables faster and more responsive brightness adjustments, reducing user experience delays and conserving battery life by eliminating the need for ambient light sensor activation and sampling delays.
Implementation Method 1
activate the UV light sensor to detect UV radiation levels
Data Source
AI summary
Computing devices and methods for controlling light output of a display are disclosed. In one example, a default brightness setting is set to an indoor light output level. A UV light sensor is activated to detect UV radiation levels. Based on determining that one or more of the UV radiation levels exceed a UV threshold, the default brightness setting is updated to correspond to an outdoor light output level that is greater than the indoor light output level. Without using information from an ambient light sensor, the display is activated from a deactivated state to illuminate at the updated default brightness setting corresponding to the outdoor light output level.