Contextual Blue Light Management for Display CCT Adjustment
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Solution Overview
Problem
Digital display devices emitting high blue light intensity can disrupt users' sleep patterns and mood due to their factory preset settings, which are not adaptable to changing light cycles or user-specific needs.
Innovation Solution
A contextual blue light management system that adjusts the correlated color temperature (CCT) of digital displays based on user-defined conditions, such as time of day, ambient light, user fatigue, and geographic location, using modules like user identification, shifting condition definition, detection, and light intensity shifting to gradually or steppedly change the CCT to warmer colors, coordinating with external IoT light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If factory preset high blue light intensity settings are used, then display brightness and visibility are improved, but user sleep patterns and mood are disrupted
Solution Approach 1:
The display system dynamically adjusts blue light intensity based on real-time detection of ambient light conditions, time of day, and user activity state. The controller modifies the intensity of blue light emitting diodes relative to red and green diodes, transitioning from static factory presets to adaptive dynamic control that responds to changing environmental and physiological contexts.
Solution Approach 2:
The system changes the spectral parameters of display light by independently controlling the intensity of red, green, and blue light emitting diodes. By adjusting the relative intensities of these primary colors, the system modifies the overall color temperature and blue light content of the display output, enabling adaptation between high brightness modes and sleep-friendly warm modes.
2Object-affected harmful factors
If blue light intensity is reduced to protect sleep patterns, then harmful effects are minimized, but display visibility and user experience deteriorate
Solution Approach 1:
The system applies different quality settings to different portions of the display output by selectively adjusting blue light intensity in specific contexts. During daytime or active work periods, full blue light intensity is maintained for optimal visibility. During evening hours or detected fatigue states, blue light intensity is locally reduced while maintaining overall display functionality, creating context-specific light quality zones.
Solution Approach 2:
The display system dynamically adjusts blue light intensity based on real-time detection of ambient light conditions, time of day, and user activity state. The controller modifies the intensity of blue light emitting diodes relative to red and green diodes, transitioning from static factory presets to adaptive dynamic control that responds to changing environmental and physiological contexts.
3Adaptability or versatility
If context-aware blue light management is implemented, then adaptability to user needs and environment is improved, but device complexity increases
Solution Approach 1:
The display system is segmented into independent controllable modules: red light emitting diodes, green light emitting diodes, blue light emitting diodes, and a controller that manages each color channel separately. This segmentation enables selective adjustment of blue light intensity without affecting overall display functionality, allowing complex adaptive behavior through coordinated control of simpler individual components.
Solution Approach 2:
The system implements feedback loops where sensors detect ambient light conditions, time of day, and user interaction patterns, which are then processed by the controller to automatically adjust blue light intensity. This closed-loop feedback mechanism enables context-aware adaptation without requiring complex user input or manual configuration, as the system self-regulates based on detected environmental and usage conditions.
4Measurement precision
If multiple sensors and detection modules are added for contextual awareness, then measurement precision of environmental conditions is improved, but device complexity and cost increase
Solution Approach 1:
The controller serves multiple functions: it manages the red, green, and blue light emitting diodes independently, processes sensor inputs from ambient light detectors and proximity sensors, determines time of day based on system clock or sensor data, and executes the blue light intensity adjustment algorithm. This multi-functionality consolidates what could be separate complex modules into a single integrated controller, reducing overall system complexity while maintaining precise contextual awareness.
Data Source
AI summary
A method of or an information handling system operating a contextual blue light management system comprising a digital display having a plurality of blue light emitters emitting light at a default luminous intensity to display a white point correlated color temperature and a memory for storing one or more internal data records correlating a blue light luminous intensity value with a preset adjusted display white point correlated color temperature, a defined condition under which to display the preset adjusted display white point correlated color temperature, and a preset duration of time for gradual shift of luminous intensity and operating the contextual blue light management system via a processor to receive and store in the one or more internal data records the preset adjusted display white point correlated color temperature, the defined condition under which to display the preset adjusted display white point correlated color temperature, and the preset duration of time, wherein the processor determines the defined condition has occurred and the graphics processing unit executes a gradual shift of luminous intensity of the plurality of the blue light emitters from the default luminous intensity to the blue light luminous intensity value of the preset adjusted display white point correlated color temperature correlated with the defined condition in the one or more internal data records over the preset duration of time.