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Screen backlight control method and system based on FPGA

A backlight control and screen technology, which is applied in the field of FPGA-based screen backlight control methods and systems, can solve the problems of control flexibility and low scalability, and achieve the effect of improving display contrast.

Pending Publication Date: 2021-06-08
WUHAN HAIWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the display backlight control methods currently on the market are overall brightness control, or a dedicated ASIC for backlight control. This kind of control is flexible and has low scalability.

Method used

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  • Screen backlight control method and system based on FPGA
  • Screen backlight control method and system based on FPGA
  • Screen backlight control method and system based on FPGA

Examples

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Embodiment Construction

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0033] A screen backlight control method based on FPGA, is characterized in that, comprises the following steps:

[0034] Step 1, serial video data is input in the video decoding module, and the video decoding module converts serial video data decoding into parallel data in RGB format, and the parallel data includes brightness data and video data;

[0035] The calculation formula for converting video data to brightness data is:

[0036] Lum i =Max(R i , G i , B i )

[0037] Among them, Lum i Indicates the brightness value of the i-th pixel, R i Represents the red component of i pixels, G i Indicates the green component of i pixels, B i Represents the blue component of i pixels;

[0038] Step 2, the brightn...

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PUM

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Abstract

The invention relates to a screen backlight control method and a system based on an FPGA, and the method comprises the following steps: 1, serial video data is input into a video decoding module, decoding and converting are carried out on the serial video data into parallel data in an RGB format by the video decoding module, wherein the parallel data comprises brightness data and video data; 2, a brightness calculation module calculates the brightness value of each partition of the light emitting diode array according to the brightness data, and brightness control is carried out on the light emitting diode array in a state machine mode; and step 3, the video coding module converts the video data into serial video data and outputs the serial video data to a screen end. The LED / Mini-LED backlight control system can be used for LED / Mini-LED backlight control, video data are input into the FPGA, and after the data are converted into parallel signals and brightness data are extracted, videos are output in combination with the brightness calculation module and the video coding module, so that the effect of improving the display contrast is achieved.

Description

technical field [0001] The invention relates to the technical field of backlight control, in particular to an FPGA-based screen backlight control method and system. Background technique [0002] Most of the display backlight control methods currently on the market are overall brightness control, or a dedicated ASIC for backlight control. This kind of control is flexible and has low scalability. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an FPGA-based screen backlight control method and system for the above deficiencies. The present invention can realize backlight control of LEDs and Mini-LEDs. [0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: [0005] A method for controlling screen backlight based on FPGA, comprising the following steps: [0006] Step 1, serial video data is input in the video decoding module, and the video decoding mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34
CPCG09G3/342
Inventor 林碧云胡伦庭
Owner WUHAN HAIWEI TECH CO LTD