Display Output Light Monitoring for Benchmarking and Control
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Solution Overview
Problem
Conventional digital signage systems require manual light balancing and maintenance to match illumination levels with changing environmental conditions, which can be inefficient due to factors like component aging and varying light levels, leading to suboptimal display performance.
Innovation Solution
A display system that includes a feedback control mechanism using sensors and cameras to monitor and adjust the output light characteristics, such as luminance and chromaticity, to maintain optimal display imagery and blend with ambient lighting, incorporating a thematic overlay to camouflage the display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If manual light balancing is used to match illumination levels with environmental conditions, then the display can be adjusted to blend with ambient lighting, but the process becomes inefficient and requires continuous manual intervention due to component aging and varying light levels
Solution Approach 1:
The system employs a light sensor to continuously monitor ambient light levels and feeds this information back to the controller, which automatically adjusts the display's illumination level. This closed-loop feedback mechanism eliminates manual intervention and maintains optimal blending between display output and environmental lighting despite component aging or environmental changes.
Solution Approach 2:
The display system performs self-adjustment of illumination levels through automated control based on sensor input. The system serves itself by automatically compensating for component aging and environmental variations without requiring external manual intervention, thereby improving operational ease while maintaining proper illumination balancing.
2Adaptability or versatility
If a thematic overlay is used to camouflage the display device, then the display blends better with the environment, but the display output must be precisely balanced with diffuse reflection to avoid detection
Solution Approach 1:
The light sensor continuously monitors the combined output of the display and thematic overlay, providing feedback to the controller. This enables automatic adjustment of display illumination to precisely match the diffuse reflection from the overlay, ensuring the display remains undetected while maintaining camouflage effectiveness despite environmental or component variations.
Solution Approach 2:
The system dynamically changes the illumination level parameter of the display based on real-time sensor feedback. By continuously adjusting this parameter to match the diffuse reflection characteristics of the thematic overlay, the system achieves precise light balancing that maintains camouflage effectiveness without requiring manual intervention or high manufacturing precision.
3Measurement precision
If conventional light sensors are used to measure ambient illumination, then basic brightness control is achieved, but adequate resolution of display operation parameters such as brightness and chromaticity is not provided for effective control
Solution Approach 1:
A camera serves as an intermediary device between the display output and the control system. The camera captures images of the display through the thematic overlay, providing rich visual information including brightness, chromaticity, and spatial distribution. This intermediary approach enables precise measurement of multiple display parameters simultaneously, overcoming the limitations of conventional light sensors that only provide basic illumination levels.
Solution Approach 2:
The patent replaces conventional light sensors with a camera-based optical measurement system. This substitution enables acquisition of detailed display parameters such as chromaticity and spatial brightness distribution, providing superior measurement precision and information retention compared to traditional photodetector-based sensors that lose fine-grained display parameter information.
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
Automates the adjustment of display settings to ensure consistent and high-quality imagery, adapting to changes in environmental lighting and display component characteristics, enhancing the camouflage effect and reducing manual intervention.
Implementation Method 1
a thematic overlay positioned over the display screen and configured to provide diffuse reflection of light striking the thematic overlay from a viewing space
Data Source
AI summary
An apparatus displaying content to a viewer by adjusting parameters of the content or display devices based on environmental or display device changes. The apparatus includes a display device with a screen providing digital content. A thematic overlay is provided over the display screen to provide diffuse reflection of light striking the front surface. The output light is a combination of the displayed content from the screen and reflection of light from the thematic overlay. The apparatus includes a digital signage benchmarking tool with an output sensing element a benchmarking module processing the sensed output light to generate output light-based data. The apparatus includes a feedback control module modifying a parameter of the display device based on the output light-based data to modify chromaticity or illumination levels of the display device. The feedback control module operates to modify the digital content to provide the displayed content having an adjusted chromaticity.