Display control method and device for LED display screen

A technology of an LED display screen and a display control method, which is applied to static indicators, instruments, etc., can solve problems such as reducing the screen refresh rate, and achieve the effects of improving the display luminous efficiency, reducing the total scanning time, and increasing the lighting time.

Inactive Publication Date: 2012-11-21
GCI SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, since T is inversely proportional to the refresh rate, it also reduces the screen refresh rate

Method used

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  • Display control method and device for LED display screen
  • Display control method and device for LED display screen
  • Display control method and device for LED display screen

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0037] see figure 1 , is a flow chart of the first embodiment of the display control method of the LED display screen provided by the present invention.

[0038] The display control method of the LED display provided in this embodiment includes the following steps:

[0039] S101, the data output time of statistical unit grayscale;

[0040] S102, judging whether the data output time of the unit grayscale is greater than the lighting time; if so, increase the light...

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Abstract

The invention discloses a display control method and a display control device for an LED display screen, wherein the method comprises the following steps: carrying out statistics on the data output time of a unit grayscale; judging whether the data output time of the unit grayscale is greater than the lightening time of the unit grayscale; if so, increasing the lightening time of the unit grayscale so as to maximize the ratio of the lightening time to the total scanning time of the unit grayscale; otherwise, remaining the lightening time of the unit grayscale unchanged; after images are synchronously adjusted by a clock domain, judging whether grayscale image data preparing to be output exist, if so, triggering an LED to lighten last grayscale latch data, and simultaneously outputting thegrayscale image data; otherwise, waiting for the arrival of new grayscale image data. By using the embodiment of the invention, the display luminescence efficiency of the LED display screen can be improved under the condition that the refresh rate of the LED screen is not reduced.

Description

technical field [0001] The invention relates to the technical field of display output, in particular to a display control method and device capable of improving the display luminous efficiency of an LED display screen. Background technique [0002] In the output system of the LED display, the brightness is controlled by controlling the sum of the lighting output time of the light-emitting diodes within a certain period, and the luminous efficiency of the display can be expressed as the actual maximum lighting time of the light-emitting diodes within a certain period of time ratio to that time. For an LED screen with N-level gray scale, one frame of image can be divided into N time periods according to the gray level N, and t is used to represent the lighting time, T represents the single scan cycle time, then the actual maximum point of the frame image Bright time is: [0003] t+2t+...+2 N-1 t [0004] =(1+2+...+2 N-1 )t [0005] =(2 N-1 )t [0006] And the total tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
Inventor 伍清华谭新庚陈金超王东林吕亮
Owner GCI SCI & TECH
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