Display Device Dynamic Brightness Adjustment for User Proximity
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Solution Overview
Problem
Users experience discomfort due to strong light emitted from digital signages displaying high-brightness images, particularly when they are close to the display.
Innovation Solution
A display device equipped with sensors and processors that adjust the brightness range of HDR images based on the proximity of users, reducing peak brightness when individuals are within a certain distance to mitigate glare and discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high-brightness HDR images are displayed to meet demand for high-brightness images, then image quality and visibility are improved, but user comfort deteriorates due to strong light emission causing discomfort
Solution Approach 1:
The display device dynamically adjusts the brightness of HDR images based on real-time detection of user proximity. When a user is detected within a predetermined distance, the system automatically reduces peak brightness levels, transitioning from static high-brightness display to adaptive brightness control, thereby resolving the contradiction between maintaining high visibility and preventing user discomfort
Solution Approach 2:
The system employs sensors to detect user presence and distance, creating a feedback loop that continuously monitors environmental conditions. This feedback mechanism enables the display to automatically adjust brightness levels in response to user proximity, ensuring optimal balance between image quality and user comfort without manual intervention
2Object-affected harmful factors
If peak brightness is reduced to prevent user discomfort, then user comfort is improved, but image visibility and impact deteriorate
Solution Approach 1:
The system implements dynamic brightness adjustment that maintains peak brightness for distant viewers while reducing it only when users are in close proximity. This conditional dynamic control ensures that visibility is preserved for the general audience while comfort is enhanced for nearby users, resolving the contradiction between visibility and comfort
Data Source
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AI summary
Provided is a display device including a sensor, a display, and at least one processor configured to display a high dynamic range (HDR) image having a first brightness range on the display, and display an HDR image having a second brightness range on the display based on a user being identified by the sensor as being within a predetermined distance from the display while the HDR image having the first brightness range is displayed, wherein a maximum value of the second brightness range is less than a maximum value of the first brightness range.