Backlight control method, backlight control apparatus, and computer readable medium

By obtaining the total brightness difference and the number of dark areas in the MLED display panel, the background brightness level is controlled, which solves the problems of image detail loss and halo phenomenon caused by local dimming algorithm, as well as the flickering problem of repeated on and off of bottom brightness, thus improving the display effect of the monitor.

CN117496902BActive Publication Date: 2026-06-26HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD
Filing Date
2023-10-24
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In MLED display panels, there are issues such as loss of image detail and halo phenomenon caused by local dimming algorithms, as well as subjective flickering caused by repeated switching of the bottom brightness due to scene transitions.

Method used

By obtaining the total brightness difference between the current frame and the previous frame, the system determines the state of the image change, counts the number of dark areas, and controls the background brightness level based on the number of dark areas. This optimizes the local adjustment of the backlight, improves the halo effect, and avoids the flickering caused by the repeated on/off switching of the bottom light.

Benefits of technology

The backlight local adjustment has been optimized to improve detail display capabilities and enhance halo performance. While reasonably controlling the activation or deactivation of the bottom brightness, subjective flicker caused by repeated activation and deactivation of the bottom brightness due to scene switching has been avoided, thus improving the display quality of the monitor.

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Abstract

The application relates to a backlight control method, a backlight control device and a computer readable medium. The method comprises the following steps: obtaining a total luminance difference between at least one backlight partition corresponding to a current frame picture and at least one backlight partition corresponding to a previous frame picture; determining a change state of the current frame picture according to the total luminance difference and a preset total luminance threshold; counting a number of dark areas of the current frame picture based on the change state of the current frame picture; and controlling a background luminance level of the current frame picture according to the number of dark areas. The application can optimize the detail display capability of local backlight adjustment, improve the halo performance, avoid subjective flicker caused by repeated opening and closing of the bottom light due to scene switching of the picture, and improve the quality of the display.
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