Multi-Display Luminance Uniformity Control
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Solution Overview
Problem
Commercial display apparatuses with multiple adjacent displays experience luminance inconsistencies, leading to reduced image quality due to differences in luminance between adjacent display regions, particularly around bezels, which existing methods fail to adequately address.
Innovation Solution
A display apparatus comprising a plurality of displays with an image divider to split input images into sub-images and at least one controller to adjust luminance, ensuring that sub-images are displayed with a uniform first luminance value when the variance between average luminance values exceeds a threshold, thereby maintaining consistent luminance across the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a plurality of displays is contiguously arranged to expand display area, then the display area is increased, but luminance inconsistency between adjacent displays occurs
Solution Approach 1:
The patent applies local quality by adjusting the luminance of specific regions (sub-images) displayed on different displays based on their individual characteristics. The controller determines average luminance values for each display and adjusts the luminance of corresponding sub-images to compensate for differences between adjacent displays, ensuring uniform overall luminance across the entire display area.
Solution Approach 2:
The patent changes the luminance parameter of sub-images displayed on different displays. By calculating average luminance values for each display and adjusting individual sub-image luminance values based on these averages, the system dynamically modifies display parameters to achieve consistent luminance across all adjacent displays.
2Device complexity
If luminance of each display is controlled based on average luminance of original image, then luminance adjustment is simplified, but luminance of specific display may become high inadvertently
Solution Approach 1:
Instead of applying a uniform luminance adjustment based on the original image's average luminance, the patent applies local quality by determining and adjusting the luminance of each sub-image individually according to the specific characteristics of each display. This ensures that each display's luminance is precisely controlled rather than uniformly adjusted.
Solution Approach 2:
The patent applies partial action by adjusting only the luminance values of sub-images that require correction, rather than uniformly adjusting all displays. By comparing average luminance values and selectively modifying sub-images with excessive luminance, the system achieves precise control without unnecessary adjustments.
3Illumination intensity
If maximum value among average luminance values is used for control, then luminance uniformity is improved, but image brightness information may be lost
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the luminance values of sub-images based on calculated average luminance values for each display. Rather than using a fixed maximum value, the system modifies luminance parameters proportionally to achieve uniformity while preserving the relative brightness relationships and information in the original image.
Data Source
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AI summary
A display apparatus includes a plurality of displays arranged adjacently, an image divider configured to divide an original input image into a plurality of sub-images for displaying the original input image split between the plurality of displays, and at least one controller configured to cause the plurality of sub-images to be displayed with a first luminance value when a maximum variance between a first average luminance value of sub-images corresponding to a first display of the plurality of displays and a second average luminance value of sub-images corresponding to a second display of the plurality of displays is greater than or equal to a threshold reference value.