Display Brightness Adjustment via Distributed Processing Unit Layer Superimposing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display brightness adjustment methods cause screen flickering due to low frequency band adjustments, particularly when adjusting backlight brightness in the interval of 257 to 1024, as they involve voltage adjustments, whereas adjustments in the interval of 0 to 256 involve duty cycle adjustments, leading to perceivable flicker.
Innovation Solution
A method for display-brightness adjustment using a distributed processing unit (DPU) with N layers, where the backlight brightness is set to a first threshold, and layer parameters such as size, transparency, or RGB values are modified to create a new layer, allowing for layer superimposing to reduce display brightness without adjusting the duty cycle of the power supply, thereby minimizing screen flickering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If duty cycle adjustment is used to reduce display brightness, then power consumption is reduced, but screen flickering occurs due to low frequency band (480 Hz)
Solution Approach 1:
The patent segments the brightness adjustment into two independent parts: backlight brightness adjustment (which reduces power consumption) and content brightness adjustment (which controls display brightness without causing flicker). By separating these functions, the system can reduce power consumption while avoiding the flickering problem associated with duty cycle adjustments.
Solution Approach 2:
The patent introduces a first layer as an intermediary element between the backlight and the content. This layer can be adjusted independently to control content brightness, allowing the system to decouple the backlight brightness from the display brightness and avoid the flickering issue while maintaining power savings.
2Illumination intensity
If voltage adjustment is used to reduce display brightness, then display brightness is reduced, but screen flickering occurs due to low frequency band adjustments
Solution Approach 1:
The patent segments the brightness control into backlight brightness (controlled by duty cycle, no flicker) and content brightness (controlled by layer parameters, no flicker). This allows independent adjustment of each component, enabling display brightness reduction without the flickering associated with voltage adjustments.
Solution Approach 2:
Instead of adjusting voltage (which causes flicker at 480 Hz), the patent changes the parameter approach by using layer transparency and RGB value adjustments. These parameter changes affect content brightness without triggering the low frequency band issues, thereby reducing display brightness without screen flickering.
3Illumination intensity
If traditional brightness adjustment methods are used, then display brightness can be adjusted, but screen flickering and poor user experience occur
Solution Approach 1:
The patent divides the brightness adjustment into two independent controls: backlight brightness adjustment for power consumption and content brightness adjustment for display quality. This segmentation allows smooth brightness transitions without flickering, significantly improving user experience while maintaining ease of operation.
Data Source
AI summary
A method for display-brightness adjustment and related products is for an electronic device. The electronic device includes a screen and a distributed processing unit (DPU), the DPU includes hardware of N layers and a layer mix, and the hardware of N layers includes hardware of a first layer and hardware of M second layer, N being an integer greater than 1, M<N, and each of the hardware of N layers being coupled with the layer mix. The method includes the following. Backlight brightness of the screen is set to a first threshold in response to detecting an adjustment instruction for the backlight brightness of the screen. The first layer is modified to decrease brightness of the first layer. A third layer is obtained by superimposing a modified first layer and multiple second layer. Display the third layer on the screen.