Adaptive Whiteboard Display Dimming for Lecturer Eye Protection
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Solution Overview
Problem
Lecturers using electronic whiteboards are exposed to high-brightness and high-blue-light stimulation, leading to eye damage, while the audience may not see certain areas due to the lecturer's obstruction, affecting both their eyes and the viewing experience.
Innovation Solution
An eye-protecting display apparatus and method that uses a sensor to distinguish between a lecturer and audience, analyzing the sheltered areas and adjusting brightness or blue light proportion adaptively based on their relative distances and positions to protect the lecturer's eyes without significantly impacting the audience's view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the electronic whiteboard maintains high brightness for clear audience viewing, then the viewing effect is improved, but the lecturer's eyes are damaged by long-term high-brightness stimulation
Solution Approach 1:
The patent divides the display screen into multiple regions and applies different brightness levels to different regions. Specifically, the region facing the lecturer is dimmed while other regions maintain normal brightness, allowing the lecturer to be protected from high-brightness stimulation without affecting the overall viewing experience for the audience.
Solution Approach 2:
The system dynamically adjusts the brightness of different screen regions based on real-time detection of the lecturer's position and orientation. The controller continuously monitors the lecturer's location and modifies the brightness distribution accordingly, enabling adaptive eye protection that responds to changing conditions during the presentation.
2Illumination intensity
If the electronic whiteboard emits high-brightness light for clear display, then the display quality is improved, but the blue light content increases causing greater eye damage
Solution Approach 1:
The patent selectively adjusts the blue light proportion in different regions of the screen. The region facing the lecturer has reduced blue light content while other regions maintain the original color composition, thus protecting the lecturer's eyes without significantly affecting the overall display quality and visual experience for the audience.
Solution Approach 2:
The system dynamically controls the blue light proportion based on the lecturer's real-time position. The controller adjusts the blue light content in the lecturer-facing region according to the detected position information, enabling adaptive reduction of harmful blue light exposure while maintaining display quality in other areas.
3Ease of operation
If the lecturer stands close to the electronic whiteboard for operation, then the ease of operation is improved, but the lecturer's eyes are exposed to stronger light from sheltered areas
Solution Approach 1:
The system performs preliminary detection of the lecturer's position and pre-adjusts the brightness and blue light proportion of the screen regions before the lecturer actually views them. By anticipating the lecturer's position and proactively modifying the light output in those areas, the system prevents eye exposure to strong light while allowing the lecturer to operate conveniently at close distance.
Solution Approach 2:
The patent employs a feedback mechanism where the sensor continuously detects the lecturer's position and feeds this information to the controller, which then adjusts the screen's light output accordingly. This closed-loop control ensures that the brightness and blue light content are continuously optimized based on the lecturer's real-time position, protecting their eyes while maintaining operational convenience.
Data Source
AI summary
An eye-protecting display apparatus including a display panel, a sensor, and a controller is provided. The display panel is configured to provide a display frame. The sensor is configured to sense a plurality of users around the display panel. The controller is electrically connected to the sensor and the display panel and configured to receive and analyze a signal from the sensor. The controller is configured to divide the users into a lecturer and an audience, analyze an area of the display panel sheltered by the lecturer by distances of the lecturer and the audience relative to the display panel and a position and angle relationship therebetween, and adaptively adjust a brightness or a blue light proportion of at least a portion of the area. An eye-protecting display method is also provided.