Aviation Industry Corp of China has been granted a patent for a method to control display device backlights. The method involves determining and adjusting luminance values for multiple backlight blocks based on input video frames, ensuring optimized brightness through calculated reduction rates. GlobalData’s report on Aviation Industry Corp of China gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Aviation Industry Corp of China, Smart factory applications was a key innovation area identified from patents. Aviation Industry Corp of China's grant share as of July 2024 was 61%. Grant share is based on the ratio of number of grants to total number of patents.
Method for controlling display backlight luminance values
The patent US12073801B2 outlines a method for controlling the backlight of a display device, which includes a display panel and multiple backlight blocks. The method involves determining provisional luminance values for these backlight blocks based on a single video frame. A luminance reduction rate is calculated, which is derived from the total sum of the provisional luminance values divided by the product of the highest luminance value and the total number of backlight blocks. This reduction rate is then used to adjust the provisional luminance values, ensuring that the adjustments are proportional to the individual values and the overall luminance levels.
Additionally, the patent describes a display device that incorporates this method, featuring a controller responsible for managing the luminance values of the backlight blocks and the light transmission through the display panel. The controller is equipped with multiple processing circuits, each assigned to specific segment regions of the display panel and corresponding backlight block groups. These circuits determine provisional luminance values based on video data, share information with one another, and calculate the necessary reductions for individual backlight blocks. The adjustments made by the controller aim to enhance the display's performance by optimizing luminance levels across the backlight blocks in response to varying video content.
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