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US 11,386,856 B2Granted
Method and device for adjusting mini led backlight television picture
AssigneeShenzhen Skyworth-Rgb Electronic Co., Ltd.
InventorsWensheng Hong, Minghuo Yu
Life of this patent
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Abstract
The present disclosure relates to a method and a device for adjusting a MINI LED backlight television picture, and discloses that when a television backlight module adopts a MINI LED backlight lamp bead, according to a route of a motion track in a motion picture, the next dark field in an edge area is pre-lightened at a higher refresh rate or an edge of a bright picture is subjected to black shielding when a brightness of previous and next frames changes obviously, thereby improving the picture display effect.
Claims13
A method for adjusting a MINI LED backlight television picture, wherein the method comprising:
- receiving audio and video input, acquiring brightness information and color information of each pixel area of each frame of image through image analysis, and providing reference data for image display optimization;
- according to a relationship between frames of the image, optimizing image display effect transition of previous frame and next frame, adjusting a refresh rate of backlight control to a preset multiple of image display and pre-lightening the next frame of image at a same time, including:
- acquiring a brightness and a chromaticity of a first frame of image, controlling backlight and display according to the brightness and chromaticity of the first frame of image, and reading a record chart;
- judging whether the next frame of image includes an area having a brightness change that is greater than a second threshold value, if not, controlling backlight image display according to a brightness of a pixel area of an actual frame;
- and
- if yes, reading the area having the brightness change greater than the second threshold value and calculating a gray value, when the brightness change of the area is changing from dark to bright at the next frame and the gray value is greater than a third threshold value, pre-lightening the area of the next frame by increasing a refresh rate of backlight control by a preset multiple, and controlling image display according to a normal grayscale of the next frame of image;
- and
- outputting a bright and dark motion picture with uniform human-eye-perceived motion transition, and displaying a final picture on a display screen according to a driving screen image display signal.
5 more elements
A device for adjusting a MINI LED backlight television picture, the device comprising:
- a power supply system, an audio and video signal input port, an image core analysis module, a memory, an SPI communication interface, an image display processing module, a backlight control unit circuit, a MINI LED driving circuit and a display screen, wherein
- the display screen comprises a MINI LED lamp module and a T-CON board;
- the audio and video signal input port is configured to provide an audio and video input interface;
- the image core analysis module is configured to analyze an image and acquire information of each frame of image, including:
- acquiring a brightness and a chromaticity of a first frame of image, controlling backlight and display according to the brightness and chromaticity of the first frame of image, and reading a record chart and judging whether the next frame of image includes an area having a brightness change that is greater than a second threshold value;
- the image display processing module is configured to improve the image and transmit the image to the T-CON board;
- the backlight control unit circuit is configured to receive a brightness information gray value of each pixel area through the SPI communication interface, including:
- when the next frame of image does not include an area having a brightness change greater than the second threshold value, controlling backlight image display according to a brightness of a pixel area of an actual frame;
- otherwise, reading the area having the brightness change greater than the second threshold value and calculating a gray value, when the brightness change of the area is changing from dark to bright at the next frame and the gray value is greater than a third threshold value, pre-lightening the area of the next frame by increasing a refresh rate of backlight control by a preset multiple, and controlling image display according to a normal grayscale of the next frame of image;
- and
- the display screen is configured to display the adjusted final picture.
8 more elements
Dependencies are inferred from the claim text.