CN114049861A - LED display screen control method, device, equipment and system - Google Patents
LED display screen control method, device, equipment and system Download PDFInfo
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- CN114049861A CN114049861A CN202111358098.4A CN202111358098A CN114049861A CN 114049861 A CN114049861 A CN 114049861A CN 202111358098 A CN202111358098 A CN 202111358098A CN 114049861 A CN114049861 A CN 114049861A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 239000011324 bead Substances 0.000 claims description 37
- 238000004590 computer program Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 239000011159 matrix material Substances 0.000 description 7
- 239000011049 pearl Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The application provides a method, a device, equipment and a system for controlling an LED display screen, wherein the method comprises the following steps: acquiring a fault pixel point of the LED display screen; receiving image data to be displayed; and controlling the fault pixel point to display a preset pixel value according to the image data, and controlling normal pixel points of the LED display screen except the fault pixel point to display the image data. The method and the device have the advantages that the detection of the fault pixel point of the LED display screen is realized, the color vector value of the non-fault sub-pixel of the fault pixel point is controlled according to the pixels around the fault pixel point, the fault pixel point can be fused with the whole body, and the display effect of the LED display screen is improved.
Description
Technical Field
The application relates to the technical field of display screens, in particular to a method, a device, equipment and a system for controlling an LED display screen.
Background
The advertisement media is a propagation carrier for releasing advertisements to the public, the LED display screen is used as a display device with the advantages of large viewing angle, long service life, high brightness, etc., more and more merchants are willing to select the LED display screen to release their own product information, and the advertising merchants need to play the product information provided by the customers by using the LED display screen arranged in the area with large traffic of each person according to the demands of the customers, such as the LED display screen arranged in airports, stations, subway stations, etc.
The LED display screen has a plurality of LED display element to constitute, and outdoor LED display screen then needs a large amount of LED lamp pearls to constitute, so large-scale integration, these display screens are in the use, along with increase of live time, LED lamp pearl is ageing, the solder joint drops, LED lamp pearl fault point that sparsely can appear influences the normal demonstration of LED display screen picture.
Therefore, in order to improve the display effect of the LED display screen, the position of the fault point of the LED display screen needs to be checked and processed.
Disclosure of Invention
An object of the embodiments of the present application is to provide a method, an apparatus, a device, and a system for controlling an LED display screen, which implement checking a faulty pixel of the LED display screen, and control a color vector value of a non-faulty subpixel of the faulty pixel according to pixels around the faulty pixel, so that the faulty pixel can be integrated with the whole, thereby improving the display effect of the LED display screen.
The embodiment of the application provides a control method of an LED display screen in a first aspect, which comprises the following steps: acquiring a fault pixel point of the LED display screen; receiving image data to be displayed; and controlling the fault pixel point to display a preset pixel value according to the image data, and controlling normal pixel points of the LED display screen except the fault pixel point to display the image data.
In one embodiment, the LED display screen is an RGB three-primary-color display screen; the controlling the faulty pixel point to display a predetermined pixel value includes: and if the fault lamp bead in the fault pixel point is an R lamp bead, controlling a G lamp bead and a B lamp bead of the fault pixel point to display the preset pixel value.
In one embodiment, the LED display screen is an RGB three-primary-color display screen; the controlling the faulty pixel point to display a predetermined pixel value includes: and if the fault lamp bead in the fault pixel point is a G lamp bead, controlling the R lamp bead and the B lamp bead of the fault pixel point to display the preset pixel value.
In one embodiment, the LED display screen is an RGB three-primary-color display screen; the controlling the faulty pixel point to display a predetermined pixel value includes: and if the fault lamp bead in the fault pixel point is a B lamp bead, controlling the R lamp bead and the G lamp bead of the fault pixel point to display the preset pixel value.
In an embodiment, the faulty pixel of the LED display screen includes: and respectively carrying out fault detection on each pixel point of the LED display screen to obtain the position information of all fault pixel points of the LED display screen.
A second aspect of the embodiments of the present application provides an LED display screen control device, including: the acquisition module is used for acquiring fault pixel points of the LED display screen; the receiving module is used for receiving image data to be displayed; and the control module is used for controlling the fault pixel point to display a preset pixel value according to the image data and controlling the normal pixel points of the LED display screen except the fault pixel point to display the image data.
In one embodiment, the LED display screen is an RGB three-primary-color display screen; the control module is used for: and if the fault lamp bead in the fault pixel point is an R lamp bead, controlling a G lamp bead and a B lamp bead of the fault pixel point to display the preset pixel value.
A third aspect of embodiments of the present application provides an electronic device, including: a memory to store a computer program; a processor configured to execute the computer program to implement the method of the first aspect and any embodiment of the present application.
A fourth aspect of the embodiments of the present application provides an LED display screen control system, including: the LED lamp panel comprises a plurality of LED lamp beads; the transmitting card is used for receiving image data to be displayed; and the driving chip is respectively connected with the sending card and the LED lamp panel and is used for driving the LED lamp panel to display the image data according to the display data sent by the sending card.
A fifth aspect of an embodiment of the present application provides a display device, including: a plurality of display units, a display panel of the display unit comprising: one of an LED panel, a small-pitch display screen, a mini LED panel, or a micro LED panel.
According to the LED display screen control method, the LED display screen control device, the LED display screen control equipment and the LED display screen control system, the obtained pixel value of the position of the fault pixel point is controlled according to the obtained relevant information of the fault pixel point of the LED display screen and the received image data to be displayed of the LED display screen, and the normal pixel points except the fault pixel point are controlled, so that the image data to be displayed is displayed, the display effect of the LED display screen is improved, and the service life of the LED display screen is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic diagram of an LED display screen control system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
FIG. 3 is a schematic flow chart illustrating a method for controlling an LED display screen according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an LED display screen control device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In the description of the present application, the terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Fig. 1 is a schematic diagram of an LED display screen system according to an embodiment of the present application. As shown in fig. 1, the LED display screen system 10 includes a transmitting card 11, an LED driving chip 12, and an LED lamp panel 13. Wherein, there are a plurality of LED lamp pearls on the LED lamp plate 13, and LED driver chip 12 is inside to contain trouble pixel point detection function to control its a plurality of LED lamp pearls of area year and carry out trouble pixel point detection operation, after the trouble pixel point detects, trouble pixel point information that LED driver chip 12 detected is passed back to on the transmitting card 11.
The transmitting card 11 analyzes and calculates the pixel value required to be transmitted to the fault pixel point according to the fault pixel point information and the acquired image data to be displayed, the LED driving chip 12 drives the LED lamp panel 13 to display the image data according to the display image data transmitted by the transmitting card 11 and the specified pixel value of the fault pixel point, so that the fault pixel information is unified on the transmitting card, the storage capacity of the LED driving chip is saved, the linked display of the fault pixel point is realized, the integral display effect is improved, and meanwhile, when the display pixel of the fault pixel point is not transmitted and not calculated any more, the power consumption is saved.
As shown in fig. 2, the present embodiment provides an electronic device 2, including: at least one processor 21 and a memory 22, one processor being exemplified in fig. 2. The processor 21 and the memory 22 are connected through the bus 20, the memory 22 stores an instruction which can be executed by the processor 21, and the instruction is executed by the processor 21, so that the electronic device 2 can execute all or part of the process of the method in the embodiment described below, so that the LED driving chip detects a fault pixel point of the LED lamp bead, and transmits the position information of the fault pixel point to the sending card, thereby controlling the fault pixel point to display a predetermined pixel value, controlling the normal pixel point of the LED display screen except the fault pixel point to display image data, and contributing to improving the display effect of the LED display screen.
In an embodiment, the electronic device 2 may be a mobile phone, a notebook computer, a desktop computer, or a mainframe computing system composed of a plurality of computer devices.
Please refer to fig. 3, which is a flowchart illustrating a method for controlling an LED display according to an embodiment of the present application, the method includes the following steps:
step S310: and acquiring fault pixel points of the LED display screen.
In this step, the pixel is the minimum imaging unit of the LED display screen, and the failure detection is performed on the failure pixel point of the LED display screen by the LED driving chip.
In one embodiment, both the bright spots and the dark spots of the LED display screen can be found out by a single color test method, i.e., the computer screen is adjusted to a certain monotonous color by adjusting the attributes, and then the dark spots and the bright spots are judged, which are generally adjusted to several single hues of white, black, and blue for testing.
The points which are pure black under the white screen condition or pure white under the black screen condition are collectively called as fault pixel points. The R, G, B dots present in the case of a black screen are called bright spots. The appearance of bright spots is divided into two cases: dots that simply represent R or G or B colors in the case of a black screen; when the display mode is switched to the red, green and blue display mode, there is a white dot only in one of the R, G or B display modes, and there are other color dots in the other two display modes, which is the case where there are two bright spots in the same pixel, and the bright spot is a faulty pixel.
The appearance of non-pure R, G, B color points in the case of a white screen is called dark points. The occurrence of dark spots is divided into two cases: when switching to the red, green and blue display modes, only the black dots are present in the same position in either the R or G or B display mode, which indicates that there is only one dark dot in the pixel. In the case where black dots are present in both of the R, G, or B display modes at the same position in switching to the red, green, and blue display modes, this indicates that there are two dark dots in this pixel. The dark spot is the faulty pixel.
In an embodiment, the LED driving chip has a function of detecting a faulty pixel, and a detector sends a faulty pixel detection enabling signal to the LED driving chip, and determines whether the faulty pixel exists by determining an output level state, where if a high level indicates that the faulty pixel exists, the sending of the enabling signal is controlled by an LED display screen inspector. The fault detection comprises a timing detection condition and a spot check detection condition.
In this embodiment, after the detection of the faulty pixel point is completed, the location information of the faulty pixel point in the control area of each LED driving chip can be uploaded to the sending card, and the detection result of each detected LED lamp bead can also be uploaded to the sending card, including the normal pixel point and the faulty pixel point.
Step S320: image data to be displayed is received.
In this step, the image data to be displayed refers to the image data to be displayed on the LED display screen, and the image data to be displayed is received by the sending card, for example, the video data is transmitted from the upper computer to the sending card through the video data connection line, so as to realize the functions of data storage, conversion, correction, and the like.
The LED display screen can acquire display data in two ways: one is hardware transmission, namely, a data source is sent out according to a certain sequence through a time sequence control circuit; and the second is software transmission, namely, the data sequence is organized by software, and the data is sent out through a port and a driving circuit.
Step S330: and controlling the fault pixel point to display a preset pixel value according to the image data to be displayed, and controlling the normal pixel points of the LED display screen except the fault pixel point to display the image data.
A full-color LED display screen is composed of three primary colors of red (R), green (G) and blue (B), and each color can be divided into 256 levels of 0-255 according to the brightness. The pixel point is the minimum image unit, and a picture is composed of many pixel points, because the color of a pixel point is represented by three values of RGB, the pixel point matrix corresponds to three color vector matrices, for example, the picture size is 500 × 338, which means that the picture is composed of a 500 × 338 pixel point matrix, the width of the picture is the length of 500 pixel points, the height is the length of 338 pixel points, and 500 × 338 is 149000 pixel points in total. Since the color of a pixel is represented by three RGB values, the pixel matrix corresponds to three color vector matrices, i.e., R matrix (500 × 338), G matrix (500 × 338), and B matrix (500 × 338). If the values of the first row and the first column of each matrix are: r: 240, G: 223, B: 204, then the color of this pixel is (240,223,204).
In one embodiment, if one or two sub-pixels in the failed pixel are damaged, the color vector values of the remaining sub-pixels of the failed pixel are calculated according to the normal pixel color vector values around the failed pixel, so that the overall effect can be improved, for example, if the sub-pixel R is a failed pixel, the color vector values of the remaining sub-pixels G, B are calculated.
In one embodiment, the color vector value of the failed pixel can also be directly assigned to 0 or 255. If the sub-pixel R of the failed pixel is the failed pixel, the color vector values of the sub-pixels G and B may be set to 0 or 255.
In one embodiment, if R, G, B subpixels of the failed pixel are damaged, the sending card does not need to send any color vector value to this location.
Please refer to fig. 4, which is a control apparatus of an LED display screen according to an embodiment of the present application, and the apparatus includes an obtaining module 401, a receiving module 402, and a control module 403.
The obtaining module 401 is configured to obtain a faulty pixel point of the LED display screen.
In one embodiment, the method further comprises: and the fault detection device 404 is used for detecting a fault pixel point of the LED lamp bead by the LED driving chip and sending the relevant position information of the fault pixel point to the sending card.
A receiving module 402, configured to receive image data to be displayed.
And a control module 403, configured to control a faulty pixel to display a predetermined pixel value according to the image data, and control a normal pixel of the LED display screen excluding the faulty pixel to display the image data.
For a detailed description of the LED display screen control device 400, please refer to the description of the related method steps in the above embodiments.
An embodiment of the present invention further provides a display device, including: a plurality of display units, a display panel of the display unit comprising: one of an LED panel, a small-pitch display screen, a mini LED panel, or a micro LED panel.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. A control method of an LED display screen is characterized by comprising the following steps:
acquiring a fault pixel point of the LED display screen;
receiving image data to be displayed;
and controlling the fault pixel point to display a preset pixel value according to the image data, and controlling normal pixel points of the LED display screen except the fault pixel point to display the image data.
2. The method of claim 1, wherein the LED display screen is an RGB tricolor display screen; the controlling the faulty pixel point to display a predetermined pixel value includes:
and if the fault lamp bead in the fault pixel point is an R lamp bead, controlling a G lamp bead and a B lamp bead of the fault pixel point to display the preset pixel value.
3. The method of claim 1, wherein the LED display screen is an RGB tricolor display screen; the controlling the faulty pixel point to display a predetermined pixel value includes:
and if the fault lamp bead in the fault pixel point is a G lamp bead, controlling the R lamp bead and the B lamp bead of the fault pixel point to display the preset pixel value.
4. The method of claim 1, wherein the LED display screen is an RGB tricolor display screen; the controlling the faulty pixel point to display a predetermined pixel value includes:
and if the fault lamp bead in the fault pixel point is a B lamp bead, controlling the R lamp bead and the G lamp bead of the fault pixel point to display the preset pixel value.
5. The method of claim 1, wherein the faulty pixel of the LED display screen comprises:
and respectively carrying out fault detection on each pixel point of the LED display screen to obtain the position information of all fault pixel points of the LED display screen.
6. An LED display screen control device, comprising:
the acquisition module is used for acquiring fault pixel points of the LED display screen;
the receiving module is used for receiving image data to be displayed;
and the control module is used for controlling the fault pixel point to display a preset pixel value according to the image data and controlling the normal pixel points of the LED display screen except the fault pixel point to display the image data.
7. The device of claim 6, wherein the LED display screen is an RGB three primary color display screen; the control module is used for:
and if the fault lamp bead in the fault pixel point is an R lamp bead, controlling a G lamp bead and a B lamp bead of the fault pixel point to display the preset pixel value.
8. An electronic device, comprising:
a memory to store a computer program;
a processor to execute the computer program to implement the method of any one of claims 1 to 5.
9. An LED display screen control system, comprising:
the LED lamp panel comprises a plurality of LED lamp beads;
the transmitting card is used for receiving image data to be displayed;
and the driving chip is respectively connected with the sending card and the LED lamp panel and is used for driving the LED lamp panel to display the image data according to the display data sent by the sending card.
10. A display device, comprising:
a plurality of display units, a display panel of the display unit comprising: one of an LED panel, a small-pitch display screen, a mini LED panel, or a micro LED panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111358098.4A CN114049861A (en) | 2021-11-16 | 2021-11-16 | LED display screen control method, device, equipment and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111358098.4A CN114049861A (en) | 2021-11-16 | 2021-11-16 | LED display screen control method, device, equipment and system |
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