WO2022178666A1

WO2022178666A1 - Led display screen and display control method therefor

Info

Publication number: WO2022178666A1
Application number: PCT/CN2021/077468
Authority: WO
Inventors: 欧阳琴
Original assignee: 深圳市艾比森光电股份有限公司
Priority date: 2021-02-23
Filing date: 2021-02-23
Publication date: 2022-09-01

Abstract

An LED display screen and a display control method therefor. The method comprises: acquiring display data of an LED module, wherein the display data comprises a first uniformity, a second uniformity and a first brightness value (401); when the second uniformity is greater than a first threshold value, determining the position of the LED module in an LED display screen according to the first brightness value (402); and when the second uniformity is not greater than the first threshold value, determining the position of the LED module in the LED display screen according to the first uniformity, the second uniformity and the first brightness value (403). LED modules are subjected to multi-angle light-emission brightness measurement, and then classified and graded according to the brightness difference between the LED modules; and the LED modules are subjected to screen set-up sorting according to a classification and grading result, such that the LED modules are assembled into a complete LED display screen having a high uniform brightness, thereby greatly improving the display effect and the display efficiency of the LED display screen.

Description

A kind of LED display screen and display control method thereof

technical field

The present application relates to the technical field of display screen control, and in particular, to a light emitting diode (LED) display screen and a display control method thereof.

Background technique

With the rapid development of modern industrial technology, LED displays have gradually been widely used in people's lives and industrial production processes. The LED display can maintain normal work in various environments, and the LED display has the characteristics of high resolution, wide viewing range, long viewing distance, and large area. LED display is usually used in outdoor advertising, commercial display, stage rental, data visualization and other fields. In the LED display control system, the LED display is a flat panel display composed of small LED modules or LED boxes, which is used to display various information such as text, images, and videos. And each LED box body includes a receiving card and a plurality of LED light boards electrically connected to the receiving card, and the receiving card is used for driving the LED light board to display. The LED box of some LED displays is also equipped with an adapter card (Hub card) to connect multiple LED light boards to the receiving card. The adapter card here plays the role of interface expansion and signal transfer. Since LED displays can be widely used in various scenarios such as traffic lights, theatrical performances, news releases, etc., people's demand for LED displays is getting higher and higher. However, limited by the consistency of LED lamp beads and the processing technology of LED modules, the initial brightness value of each LED module will be quite different when it is just produced, and the calibration process can only guarantee the same LED box. Several LED modules in the body look the same brightness on the front. In the above application scenarios of the LED display, the LED display is composed of different LED cabinets. When using different batches of LED modules, or the same batch of LED modules with uneven brightness , the LED display will have the phenomenon of bright and dark blocks, and the display effect is poor.

At present, the more commonly used display control method of LED display screen is to perform die-bonding, wire bonding and LED module packaging on the LED wafers according to the sorting information of the LED wafers of each primary color, and then sort the LED modules in an orderly manner. This improves the display effect of the LED display.

However, in the actual production process, the processing of LED lamp beads and LED modules is separated. Even if the batches of LED lamp beads are screened, the processing of LED modules will still be limited by the size of LED lamp beads. Problems such as pin deviation and surface coating lead to a large deviation of the brightness of the LED module, and the LED display screen has the phenomenon of bright and dark blocks, and the display effect is not good.

SUMMARY OF THE INVENTION

The embodiment of the present application discloses an LED display screen and a display control method thereof. By measuring the luminous brightness of the LED modules from multiple angles, classifying and grading the LED modules according to the brightness difference between the LED modules, and classifying the LED modules according to the classification and grading results. The groups are arranged in order to form a complete LED display with high uniformity and brightness, which greatly improves the display effect and display efficiency of the LED display.

In a first aspect, an embodiment of the present application discloses a display control method for an LED display screen, including:

Obtain the display data of the LED module; the display data includes a first uniformity, a second uniformity and a first brightness value, the first uniformity represents the brightness display uniformity obtained by measuring the LED module from the front, the second uniformity Uniformity means the brightness display uniformity obtained by measuring the above-mentioned LED module from the side, and the above-mentioned first brightness value means the brightness value obtained by measuring the above-mentioned LED module from the front;

When the second uniformity is greater than the first threshold, determining the position of the LED module in the LED display screen according to the first brightness value;

When the second uniformity is not greater than the first threshold, the position of the LED module in the LED display is determined according to the first uniformity, the second uniformity and the first brightness value.

In the embodiment of the present application, the display data of the LED module is obtained first, and a light sensor can be used as a device for measuring the LED module to measure the front luminous brightness and the side multi-angle luminous brightness of the LED module. By changing the front and rear of the measuring device The luminous brightness value or illuminance value of the LED module at different angles is obtained from the left and right positions. The above-mentioned display data mainly includes the first uniformity, the second uniformity and the first brightness value. The first uniformity represents the measurement of the LED module from the front. The brightness display uniformity, the larger the value of the first uniformity, the higher the brightness display uniformity of the front of the LED module, the second uniformity is the brightness display uniformity obtained by measuring the above LED module from the side, the second uniformity The larger the value, the higher the uniformity of the brightness display on the side of the LED module. The first brightness value represents the brightness value obtained by measuring the above-mentioned LED module from the front. The larger the first brightness value, the higher the front brightness of the LED module. Then, according to the first uniformity, the second uniformity and the first brightness value, the position of the LED module in the LED display screen is jointly determined, that is, the splicing method of the LED module. Specifically, a first threshold value is used as a standard value of the uniformity of the side brightness display of the LED module. The first threshold value is not a fixed value and may vary according to different application scenarios. When the second uniformity is greater than the first threshold, it is considered that the LED module does not have the problem of uneven side brightness display. At this time, the position of the LED module in the LED display screen is determined according to the first brightness value. The larger the first brightness value is, the closer the position of the LED module in the LED display is to the center of the LED display. When the second uniformity is not greater than the first threshold, it is considered that the LED module has the problem of uneven side brightness display. At this time, according to the first uniformity, the second uniformity and the first brightness value, the above-mentioned The LED modules are classified and graded, and the positions of the above LED modules in the LED display screen are determined together, and the screen frames are sorted, so as to assemble a complete LED display screen with high uniformity and brightness, which greatly improves the display of the LED display screen. effect and display efficiency.

In a possible implementation manner of the first aspect, the above-mentioned determining the position of the above-mentioned LED module in the above-mentioned LED display screen according to the above-mentioned first brightness value includes:

According to the first difference between the first brightness value and the brightness value of the center point of the LED display screen, it is determined that the LED module is located at a first distance from the center point of the LED display screen. The first difference is a proportional relationship.

In the embodiment of the present application, a method is provided for determining the position of the LED module in the LED display screen according to the first brightness value when the second uniformity is greater than the first threshold. Specifically, the first brightness value and the The difference between the brightness values of the center point of the LED display screen is used as the first difference value. According to the first difference value, it is determined that the LED module is located at a first distance from the center point of the LED display screen. The first distance and the first difference value are A proportional relationship, that is, the greater the difference between the first brightness value and the brightness value of the center point of the LED display screen, the farther the LED module is from the center point of the LED display screen. Through the embodiments of the present application, a reordered LED display screen can be obtained. The module greatly improves the display uniformity of the LED display screen, and does not need to perform full-screen correction, reduces the brightness loss during the full-screen correction of the module, and improves the display efficiency.

In a possible implementation manner of the first aspect, determining the position of the LED module in the LED display screen according to the first uniformity, the second uniformity, and the first brightness value includes:

In the case where the second uniformity is smaller than the first uniformity, according to the second difference between the second uniformity and the uniformity of the reference point of the LED display screen, it is determined that the LED module is located at a distance from the reference point The position of the second distance, the second distance and the second difference are in a proportional relationship, and the position of the reference point on the LED display screen is determined by the installation height of the LED display screen and the position of the human eye.

In the embodiment of the present application, it is provided that the position of the LED module in the LED display screen is determined according to the first uniformity, the second uniformity and the first brightness value under the condition that the second uniformity is not greater than the first threshold. Methods. Specifically, by comparing the magnitude relationship between the second uniformity and the first uniformity, the relationship between the brightness display uniformity on the side of the LED module and the brightness display uniformity on the front side of the LED module can be determined. In the case where the second uniformity is smaller than the first uniformity, it means that the front-side brightness display uniformity of the LED module is higher, and the side-side brightness display uniformity is lower. At this time, the difference between the second uniformity and the uniformity of the reference point of the LED display screen is taken as the second difference value, and the LED module is determined according to the second difference value to be located at the second distance from the reference point of the LED display screen. , the second distance is proportional to the second difference, that is, the greater the difference between the second uniformity and the uniformity of the reference point of the LED display, the farther the LED module is from the reference point of the LED display. The position of the point on the LED display is determined by the installation height of the LED display and the position of the main observation human eye. Through the embodiment of the present application, the position of the screen module with uneven side brightness display can be adjusted, and a reasonable gradient order can be performed, which can significantly reduce or even eliminate the side brightness display unevenness that can be seen by the human eye, and greatly improves the LED display screen. The display uniformity is improved, and the whole screen correction is not required, which reduces the brightness loss during the whole screen correction of the module, and improves the display efficiency.

In a possible implementation manner of the first aspect, after it is determined that the LED module is located at a second distance from the reference point, the method further includes:

When at least two of the LED modules are separated from the reference point by the second distance, the position order of the LED modules is adjusted according to the first brightness value.

In the embodiments of the present application, after determining that the LED modules are located at a second distance from the reference point, a method for further adjusting the position order of the LED modules is provided. Specifically, in the case where there are at least two LED modules with a second distance from the above reference point, the position order of the LED modules can be further adjusted according to the first brightness value of the LED modules. The positions of the LED modules are sorted from top to bottom and from right to left in descending order of brightness value. Through the embodiments of the present application, not only the position of the screen module with uneven side brightness display is adjusted, but also the front side is adjusted. The influence of brightness on the display effect of the screen itself, and the frame screen does not need to be adjusted by human eyes, which greatly improves the display effect and display efficiency of the LED display.

In a possible implementation manner of the first aspect, according to the first uniformity, the second uniformity and the first brightness value of the LED module, the above-mentioned LED module in the LED display screen is determined. location, including:

In the case that the second uniformity is not less than the first uniformity, according to the third difference between the first brightness value and the brightness value of the reference point of the LED display screen, it is determined that the LED module is located at the reference point. The position apart from the third distance, the third distance and the third difference are in a proportional relationship, and the position of the reference point on the LED display screen is determined by the installation height of the LED display screen and the position of the human eye.

In the embodiment of the present application, it is provided that the position of the LED module in the LED display screen is determined according to the first uniformity, the second uniformity and the first brightness value under the condition that the second uniformity is not greater than the first threshold. another method. Specifically, by comparing the magnitude relationship between the second uniformity and the first uniformity, the relationship between the uniformity of the side brightness display of the LED module and the uniformity of the front brightness display can be determined. In the case where the second uniformity is not less than the first uniformity, it means that the front-side brightness display uniformity of the LED module is lower, and the side-side brightness display uniformity is higher. At this time, the difference between the first brightness value and the brightness value of the reference point of the LED display screen is used as the third difference value, and according to the third difference value, it is determined that the LED module is located at a third distance from the reference point of the LED display screen. , the third distance is proportional to the third difference value, that is, the greater the difference between the first brightness value and the brightness value of the reference point of the LED display screen, the farther the LED module is from the reference point of the LED display screen. The position of the point on the LED display is determined by the installation height of the LED display and the position of the main observation human eye. Through the embodiments of the present application, the position of the screen module with uneven frontal brightness display can be adjusted, and a reasonable gradient order can be performed, which can significantly reduce the influence of the uneven frontal brightness display of the LED module on the display effect of the screen itself, and greatly improve the LED display. The display uniformity of the display screen does not need to be corrected for the entire screen, which reduces the brightness loss when the module is corrected for the entire screen and improves the display efficiency.

In a possible implementation manner of the first aspect, after determining that the LED module is located at a third distance from the reference point, the method further includes:

When at least two of the LED modules are separated from the reference point by the second distance, the position order of the LED modules is adjusted according to the second uniformity.

In the embodiments of the present application, after determining that the LED modules are located at a third distance from the reference point, a method for further adjusting the position order of the LED modules is provided. Specifically, in the case where there are at least two LED modules with a third distance from the above-mentioned reference point, the position order of the LED modules can be further adjusted according to the second uniformity. The LED modules are sorted from top to bottom and right to left, which significantly reduces or even eliminates the problem of uneven brightness display on the side that can be seen by the human eye, and greatly improves the display uniformity of the LED display. The whole screen correction is performed, which reduces the brightness loss during the whole screen correction of the module, and improves the display efficiency.

In a second aspect, an embodiment of the present application discloses a display control device for an LED display screen, including:

The acquisition unit is used to acquire the display data of the LED module; the display data includes a first uniformity, a second uniformity and a first brightness value, and the first uniformity represents the uniformity of the brightness display obtained by measuring the LED module from the front The above-mentioned second uniformity represents the brightness display uniformity obtained by measuring the above-mentioned LED module from the side, and the above-mentioned first brightness value represents the brightness value obtained by measuring the above-mentioned LED module from the front;

a determining unit, configured to determine the position of the LED module in the LED display screen according to the first brightness value when the second uniformity is greater than the first threshold;

The above determining unit is further configured to determine whether the LED module is in the LED module according to the first uniformity, the second uniformity and the first brightness value under the condition that the second uniformity is not greater than the first threshold. position in the display.

In a possible implementation manner of the second aspect, the determining unit is specifically configured to determine, according to the first difference between the first brightness value and the brightness value of the center point of the LED display screen, that the LED module is located in the The position between the center point of the LED display screen and the first distance, the first distance and the first difference are in a proportional relationship.

In a possible implementation manner of the second aspect, the determining unit is further configured to, in the case that the second uniformity is smaller than the first uniformity, according to the reference of the second uniformity and the LED display screen The second difference of point uniformity determines that the LED module is located at a second distance from the reference point, the second distance and the second difference are in a proportional relationship, and the reference point is on the LED display. The position of the LED display screen is determined by the installation height of the above-mentioned LED display and the position of the human eye.

In a possible implementation manner of the second aspect, the above-mentioned device further includes:

The sorting unit is configured to adjust the position sorting of the LED modules according to the first brightness value when at least two of the LED modules are separated from the reference point by the second distance.

In a possible implementation manner of the second aspect, the above-mentioned determining unit is further configured to, in the case that the above-mentioned second uniformity is not less than the above-mentioned first uniformity, according to the above-mentioned first brightness value and the above-mentioned LED display screen The third difference between the luminance values of the reference point determines that the LED module is located at a third distance from the reference point, the third distance and the third difference are in a proportional relationship, and the reference point is located on the LED display screen. The position of the LED display screen is determined by the installation height of the above-mentioned LED display and the position of the human eye.

In a possible implementation manner of the second aspect, the sorting unit is further configured to adjust the above-mentioned second uniformity according to the above-mentioned second uniformity when at least two of the above-mentioned LED modules are separated from the above-mentioned reference point by the above-mentioned second distance. The positional ordering of the LED modules.

In a third aspect, an embodiment of the present application discloses an electronic device for display control of an LED display screen, the electronic device includes a memory and a processor, wherein the memory stores program instructions; when the program instructions are executed by the processor, The processor is caused to perform the method as in the first aspect or in any possible implementation manner of the first aspect.

In a fourth aspect, an embodiment of the present application discloses a computer-readable storage medium, in which a computer program or instruction is stored; when the computer program or instruction is run on one or more processors, the The method in an aspect or any one of the possible implementations of the first aspect.

In a fifth aspect, an embodiment of the present application discloses a computer program product, where the computer program product includes program instructions, and when executed by a processor, the program instructions cause the processor to execute any one of the first aspect or the first aspect method in possible implementations.

In the embodiment of the present application, by measuring the luminous brightness of the LED modules from multiple angles, classifying and grading the LED modules according to the difference in brightness between the LED modules, and assembling the LED modules according to the classification and grading results. The LED display with high uniformity and brightness greatly improves the display effect and display efficiency of the LED display.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the following briefly introduces the accompanying drawings that are required in the embodiments or the background technology of the present application.

FIG. 1 is a schematic structural diagram of a display control of an LED display screen provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of display control of another LED display screen provided by an embodiment of the present application;

3 is a schematic structural diagram of an LED module provided by an embodiment of the present application;

4 is a schematic flowchart of a display control method for an LED display screen provided by an embodiment of the present application;

FIG. 5a is a schematic structural diagram of a luminance measurement of an LED module provided by an embodiment of the present application;

FIG. 5b is a schematic structural diagram of another LED module brightness measurement provided by an embodiment of the present application;

FIG. 5c is a schematic structural diagram of another LED module brightness measurement provided by an embodiment of the present application;

6 is a schematic flowchart of another display control method for an LED display screen provided by an embodiment of the present application;

7a is a schematic structural diagram of an arrangement of LED modules according to an embodiment of the present application;

7b is a schematic structural diagram of another arrangement of LED modules according to an embodiment of the present application;

FIG. 7c is a schematic structural diagram of another LED module arrangement according to an embodiment of the present application;

FIG. 7d is a schematic structural diagram of another LED module arrangement according to an embodiment of the present application;

8 is a schematic structural diagram of a display control device for an LED display screen provided by an embodiment of the application;

FIG. 9 is a schematic structural diagram of a display control device for an LED display screen provided by an embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described below with reference to the accompanying drawings.

The terms "first" and "second" in the description, claims and drawings of the present application are only used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device, etc. that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, etc., or optional It also includes other steps or units inherent to these processes, methods, products or devices, etc.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. Those skilled in the art will understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

In this application, "at least one (item)" means one or more, "plurality" means two or more, "at least two (item)" means two or three and three In the above, "and/or" is used to describe the relationship of related objects, indicating that there can be three kinds of relationships, for example, "A and/or B" can mean: only A exists, only B exists, and both A and B exist three A case where A and B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one of the following" or similar expressions, refers to any combination of these items. For example, at least one (a) of a, b or c, can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c" ".

The embodiments of the present application provide an LED display screen and a display control method thereof. In order to describe the solution of the present application more clearly, some knowledge related to the LED display screen is first introduced below.

LED display box: The LED display box is simply a screen composed of several display units (unit display panels or unit display boxes) that can be combined and spliced. In order to meet different environments, plus a set of appropriate controllers (main control board or control system), various specifications of display boards (or unit boxes) can be combined with controllers of different control technologies to form many kinds of LED displays. screen to meet different display needs.

LED display module: LED display module (light board) is one of the main components that make up the finished LED display. It mainly consists of LED lights, printed circuit boards (PCBs), drive chips, resistors, Consists of capacitors and plastic kits.

The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a display control of an LED display screen provided by an embodiment of the present application. As shown in Figure 1, the architecture diagram includes an LED display screen, a control card, an LED screen control computer, a power supply and a switch. Among them, the power supply is used to supply power to the control card and the LED display screen, and the user can control the power on and off through the switch, thereby controlling the startup of the control card and the LED display screen. The LED screen control computer will output a video signal to the LED display screen, and the video signal is used to present the corresponding image information through the LED display module or light board in the LED display screen. The LED screen control computer is connected to the control card network, and data transmission can be performed between the two through a high definition multimedia interface (HDMI) or a digital visual interface (DVI). The internal structure of the control card mainly includes a microcontroller unit (MCU) and a field programmable gate array (FPGA). Among them, the MCU is used to process the test parameters and monitor the working condition of the entire LED display box, and the FPGA is used to receive the video signal sent by the LED screen control computer, and drive the light board of the LED display screen to display the image corresponding to the video signal. . After the control card is powered on by the power supply, it can forward the video signal of the LED screen control computer to the receiving card of the LED display screen, and the video signal forwarded by the control card is a parallel video signal. After the LED display is powered by the power supply, it can start the drive module in the LED display, and then start the LED display module or light board in the LED display. The drive module in the LED display receives the parallel video signal sent by the control card. Then, convert it into a serial video signal that can be recognized by the LED display screen, and transmit the serial video signal to the LED display screen. After the LED display screen receives the serial video signal, it lights up the LED lamp beads and displays the same The image information corresponding to the serial video signal.

Optionally, the architecture diagram may further include a power management module and a switch corresponding thereto, wherein the control card and the LED display screen respectively include a power supply for supplying power to themselves. The user can control the control signal sent by the power management module through the switch, and the control signal can be used to control the power supply of the control card and the LED display itself to turn on and off, so as to achieve the effect of indirectly controlling the start of the control card and the LED display. Specifically, the control signal sent by the power management module can also be used to control the power-on sequence of the above-mentioned control card and the power supply of the LED display screen itself, that is, the control card and the LED display screen can be controlled to start at different timings.

Please refer to FIG. 2 . FIG. 2 is a schematic structural diagram of display control of another LED display screen provided by an embodiment of the present application. As shown in Figure 2, the structure diagram is a general component of an LED display screen. The LED display screen is spliced one by one display unit, and M*N display units are spliced into an LED display screen. The splicing method Including but not limited to the splicing method in Figure 2. Each display unit represents an LED display module, and each LED display module is composed of several LED lamp beads. In the architecture shown in FIG. 2 , the host computer sends a display command, and after receiving the display command, the display module 1 communicatively connected to the host computer lights up the LED lamp beads and displays the image information corresponding to the display command; and At the same time, the above-mentioned display module 1 also acts as a transfer interface to transfer the received display command to the other display modules respectively. After the other display modules receive the display command, the LED lamp beads are correspondingly lit to display the Image information corresponding to the display command. It can be used to display different texts, images, and video information, and can be widely used in various scenarios such as traffic lights, theatrical performances, and news releases.

Specifically, in addition to the above-mentioned several LED lamp beads, the LED display module is also composed of various components and equipment. Please refer to FIG. 3 , which is a schematic structural diagram of an LED module according to an embodiment of the present application. The LED display module can be any one of the display modules 1 to (M+N) in the LED display in the above-mentioned FIG. 2 , and its interior mainly includes a power supply, a power management module, a driving display system, storage system and control system. Among them, the power supply is used to convert alternating current into direct current for use by other functional modules (such as a power management module, a driving display system, a control system, and a storage system). The power management module is used to manage the power supply and realize the time-sharing power-on function, that is, to control the power-on sequence of different functional modules (such as the drive display system, the storage system, and the control system). The control system receives the display instruction sent by the host computer, parses the display instruction, and then obtains the display data corresponding to the display instruction from the storage system, and transmits it to the drive display system. The drive display system can be an FPGA drive display system, using for displaying the image information corresponding to the above display data.

At present, limited by the consistency of LED lamp beads and the processing technology of LED modules, the initial brightness value of each LED module will be quite different when it is just produced. Through the commonly used calibration process, only the same LED box can be guaranteed. Several LED modules in the body seem to have the same brightness on the front, but the LED display is composed of different LED cabinets. When using different batches of LED modules, or the same batch but with uneven brightness When the LED modules are spliced together, the LED display screen will have bright and dark blocks, and the display effect will be poor, which will affect the viewer's experience. In this regard, the more commonly used display control method of LED display screen is to sort the LED wafers of the three primary colors of red, green and blue according to the optical characteristic parameters. The LED wafers of the three primary colors of blue and blue are subjected to die bonding, wire bonding and LED module packaging, and then the LED modules are sorted in an orderly manner to improve the display effect of the LED display. However, in the actual production process, the processing of LED lamp beads and LED modules is separated. Even if the batches of LED lamp beads are screened, the processing of LED modules will still be limited by the size of LED lamp beads. Problems such as pin deviation and surface coating lead to a large deviation of the brightness of the LED module, and the LED display screen has the phenomenon of bright and dark blocks, and the display effect is not good.

In view of the above-mentioned problem that the display effect of the LED display screen is not good, the present application is based on the structure of the display control of the LED display screen provided in the above-mentioned FIG. 1 and FIG. 2, and the structure of the LED module provided in the above-mentioned FIG. A display control method of an LED display screen. Compared with the more commonly used display control methods, this method measures the luminous brightness of LED modules from multiple angles, and then classifies and grades the LED modules according to the difference in brightness between the LED modules. Sorting, so as to assemble a complete LED display with high uniformity and brightness, which greatly improves the display effect and display efficiency of the LED display.

Please refer to FIG. 4. FIG. 4 is a schematic flowchart of a display control method for an LED display screen provided by an embodiment of the present application. The method includes but is not limited to the following steps:

Step 401: Acquire display data of the LED module, where the display data includes a first uniformity, a second uniformity, and a first brightness value.

The embodiment of the present application first acquires display data of the LED module, where the display data includes a first uniformity, a second uniformity, and a first brightness value. The first uniformity indicates the brightness display uniformity obtained by measuring the above LED modules from the front. The larger the value of the first uniformity, the higher the brightness display uniformity on the front of the LED module. The second uniformity means that the LEDs are measured from the side. The brightness display uniformity obtained by the module, the larger the second uniformity value, the higher the brightness display uniformity on the side of the LED module. The first brightness value represents the brightness value obtained by measuring the above LED module from the front, the first brightness value The larger the value, the higher the front brightness of the LED module.

Among them, the above-mentioned display data of the LED module including the first uniformity, the second uniformity and the first brightness value can be used as a device for measuring the LED module through a light sensor, etc. The angular luminous brightness is measured, and the luminous brightness value or illuminance value of the LED module at different angles is obtained by changing the front, rear, left, and right positions of the measuring device.

[Correction 29.03.2021 under Rule 91]
For details, please refer to FIG. 5a. FIG. 5a is a schematic structural diagram of an LED module brightness measurement provided by an embodiment of the present application. As can be seen from FIG. 5a, the LED module in the embodiment of the present application uses an optical sensor as a measuring device to measure the LED The front brightness of the LED lamp beads arranged on the module is measured. The measurement can obtain a series of display data representing the brightness value or illuminance value of the LED module. From the display data, the uniformity of the front brightness display of the LED module can be obtained. The first uniformity of , and the first brightness value representing the front brightness value of the LED module.

Please refer to FIG. 5b. FIG. 5b is a schematic structural diagram of another LED module brightness measurement provided by the embodiment of the application. It can be seen from FIG. 5b that the LED module in the embodiment of the application uses an optical sensor as a measuring device to measure the LED The side brightness of the LED lamp beads arranged on the module is measured, either from the left side in the direction of θ angle, or from the right side in the direction of θ angle; for the same reason, please Referring to FIG. 5c, FIG. 5c is a schematic structural diagram of another LED module brightness measurement provided by the embodiment of the present application. Using an optical sensor as a measurement device, the side brightness of the LED lamp beads arranged on the LED module is measured, which can be The brightness is measured from the left side in a direction different from the angle θ, and it can also be measured from the right side in a direction different from the angle θ; through the above multi-angle side brightness measurement, a series of indicators representing the LED module can be obtained. The display data of the brightness value or the illuminance value of the LED module can be obtained from the display data, and the second uniformity indicating the uniformity of the brightness display on the side of the LED module can be obtained.

Step 402: When the second uniformity is greater than the first threshold, determine the position of the LED module in the LED display screen according to the first brightness value.

According to the above step 401, the first uniformity indicating the uniformity of the brightness display on the front of the LED module, the second uniformity indicating the uniformity of the brightness display on the side of the LED module, and the first brightness indicating the brightness of the front of the LED module can be obtained. value. Then, according to the first uniformity, the second uniformity and the first brightness value, the position of the LED module in the LED display screen is jointly determined, that is, the splicing method of the LED module.

Specifically, it can be determined whether the LED module has the problem of uneven side brightness display according to the measured display data. The first threshold value is used as a standard value of the uniformity of the side brightness display of the LED module. The first threshold value is not a fixed value and may vary according to different application scenarios. When the second uniformity is greater than the first threshold, it is considered that the LED module does not have the problem of uneven side brightness display. At this time, the position of the LED module in the LED display screen is determined according to the first brightness value. The larger the first brightness value is, the closer the position of the LED module in the LED display is to the center of the LED display. It can be seen that this splicing method is to place the LED module with the highest measured front brightness value at the center point of the LED display screen. In order to make the description more concise, it will be placed at the center point of the LED display screen. The LED module is called the first LED module. It can be seen that the first LED module is the LED module with the highest front brightness value, and then the first brightness value of the LED modules to be sorted and the first LED module The difference value of the brightness values is used as the first difference value, according to the first difference value, it is determined that the LED modules to be sorted are located at a position with a first distance from the first LED module, and the first distance and the first difference value are in a proportional relationship , that is, the greater the difference between the first brightness value and the brightness value of the first LED module, the greater the deviation between the front brightness of the LED module to be sorted and the front brightness of the first LED module, the greater the deviation of the front brightness of the LED module to be sorted and the front brightness of the first LED module. The module should be placed at a position farther away from the first LED module; the smaller the difference, the smaller the deviation between the front brightness of the LED module to be sorted and the front brightness of the first LED module, the smaller the difference is The LED modules should be placed closer to the distance from the first LED module. Through the embodiment of the present application, a reordered LED display module can be obtained, which greatly improves the display uniformity of the LED display, and does not need to perform full-screen correction, reduces the brightness loss during the full-screen correction of the module, and improves the display. efficiency.

Step 403: Under the condition that the second uniformity is not greater than the first threshold, determine the position of the LED module in the LED display screen according to the first uniformity, the second uniformity and the first brightness value.

Similar to the above step 402, after obtaining the display data including the first uniformity, the second uniformity and the first brightness value, the embodiment of the present application can determine whether the LED module has uneven side brightness display according to the measured display data. The problem. The first threshold value is still used as the standard value of the uniformity of the side brightness display of the LED module. The first threshold value is not a fixed value and may vary according to different application scenarios. When the second uniformity is not greater than the first threshold, it is considered that the LED module has the problem of uneven side brightness display. At this time, according to the first uniformity, the second uniformity and the first brightness value, the The classification and grading of the above-mentioned LED modules jointly determine the position of the above-mentioned LED modules in the LED display screen.

Specifically, the relationship between the side brightness display uniformity and the front brightness display uniformity of the LED module can be determined by comparing the magnitude relationship between the second uniformity and the first uniformity, and then according to the side brightness display uniformity and the front brightness display The priority order of uniformity, and the LED modules are sorted multiple times to improve their display uniformity.

On the one hand, in the case where the second uniformity is smaller than the first uniformity, it means that the front-side brightness display uniformity of the LED module is higher, and the side-side brightness display uniformity is lower. Therefore, the LED modules should be ranked with the uniformity of side brightness display as the primary priority factor. At this time, it is necessary to first determine the reference point of the LED display screen according to the installation height of the LED display screen and the position of the main observation human eye, and display the LED module with the worst uniformity in side brightness, that is, the same large angle on the left and right sides is measured. The LED module with the largest deviation of the luminous brightness value should be placed at the corner of the LED display, preferably at a height close to the position of the human eye, so as to minimize the side brightness display that the human eye can perceive when observing the LED display. For the problem of unevenness, in order to make the description more concise, the LED module placed at the reference point position is called the second LED module, and the second LED module is the LED module with the worst uniformity of side brightness display. Group. Then, the difference between the second uniformity of the LED modules to be sorted and the side brightness display uniformity of the second LED module is used as the second difference, and the LED modules to be sorted are determined according to the second difference. At the position where the two LED modules are separated by a second distance, the second distance and the second difference are in a proportional relationship, that is, the greater the difference between the second uniformity and the side brightness display uniformity of the second LED module, the greater the The greater the difference between the side brightness display uniformity of the LED modules to be sorted and the side brightness display uniformity of the second LED module, the farther the LED modules to be sorted should be placed from the second LED module. ; The smaller the difference is, the smaller the deviation between the side brightness display uniformity of the LED module to be sorted and the side brightness display uniformity of the second LED module is, the LED module to be sorted should be placed at a distance from the second LED module. The closer the module is to the position. Through the embodiment of the present application, the position of the screen module with uneven side brightness display can be adjusted, and a reasonable gradient order can be performed, which can significantly reduce or even eliminate the side brightness display unevenness that can be seen by the human eye, and greatly improves the LED display screen. The display uniformity is improved, and the whole screen correction is not required, which reduces the brightness loss during the whole screen correction of the module, and improves the display efficiency.

Further, in the case where there are at least two LED modules and the second LED module at a second distance, the LEDs to be sorted can be further adjusted according to the first brightness value of the at least two LED modules to be sorted. The positions of the modules can be sorted. For example, the LED modules to be sorted can be sorted from top to bottom and from right to left according to their front display brightness (first brightness value) from large to small. Through the embodiments of the present application, It not only adjusts the position of the screen module with uneven side brightness display, but also considers the influence of the front brightness on the display effect of the screen itself, and the frame screen does not need to be adjusted by human eyes, which greatly improves the display effect of the LED display. Show efficiency.

On the other hand, in the case where the second uniformity is not less than the first uniformity, it means that the front brightness display uniformity of the LED module is lower, and the side brightness display uniformity is higher. Therefore, the LED modules should be ranked with the uniformity of the front brightness display as the primary priority factor. At this time, it is necessary to first determine the reference point of the LED display screen according to the installation height of the LED display screen and the position of the main observation human eye, and place the LED module with the worst front brightness display in a position close to the position of the human eye. The problem of poor frontal brightness that can be perceived by the human eye when observing the LED display screen is minimized. In order to make the description more concise, the LED module placed at the reference point position is called the third LED module. The third LED module is the LED module with the worst brightness display uniformity on the front. Then, the difference between the first brightness value of the LED modules to be sorted and the front brightness value of the third LED module is used as the third difference value, and the LED modules to be sorted are determined according to the third difference value. At the position where the modules are separated by a third distance, the third distance and the third difference are in a proportional relationship, that is, the greater the difference between the first brightness value and the front brightness value of the third LED module, the greater the difference between the LEDs to be sorted. The greater the difference between the front brightness of the module and the front brightness of the third LED module, the farther the LED module to be sorted should be placed from the third LED module; the smaller the difference, the more the LED module to be sorted The smaller the deviation between the front brightness of the first LED module and the front brightness of the third LED module is, the closer the distance to the third LED module is to the LED modules to be sorted. Through the embodiments of the present application, the position of the screen module with uneven frontal brightness display can be adjusted, and a reasonable gradient order can be performed, which can significantly reduce the influence of the uneven frontal brightness display of the LED module on the display effect of the screen itself, and greatly improve the LED display. The display uniformity of the display screen does not need to be corrected for the entire screen, which reduces the brightness loss when the module is corrected for the entire screen and improves the display efficiency.

Further, in the case where there are at least two LED modules and the third LED module at a third distance, the LEDs to be sorted can be further adjusted according to the second uniformity of the at least two LED modules to be sorted. The positions of the modules can be sorted. For example, the LED modules to be sorted can be sorted from top to bottom and from right to left according to the uniformity of the side brightness display (second uniformity) from large to small. , can significantly reduce or even eliminate the problem of uneven brightness display on the side that can be seen by the human eye, greatly improve the display uniformity of the LED display, and do not need to perform full-screen correction, reducing the brightness loss of the module during full-screen correction, improving display efficiency.

The embodiment of the present application is used to improve the problem of inconsistent brightness and poor display effect of the LED display screen when the screen is mounted. For example, for an LED display screen composed of 864 LED modules with different brightness Each LED box is composed of 8 LED modules arranged in a 2*4 manner. In the case of random arrangement, the human eye can see obvious differences in the brightness of the LED display. For LED modules with calibration, the calibration is generally carried out in units of LED cabinets. After calibration, the brightness difference in the LED cabinet will be reduced, but at the same time, the brightness of a part of the LED modules will also be lost, and the difference between the LED cabinet and the cabinet will be reduced. There are still obvious brightness differences, and the LED display still has brightness differences visible to the human eye; if the LED display is calibrated in units of the entire screen, the brightness uniformity of the entire screen will be improved, but a large part of the LED mode will be lost. Group brightness. In addition to the front display effect, when the LED module has the problem of uneven brightness display on the side, even if the front brightness of the LED display is the same, when the human eye looks at a large angle from the side, the brightness between different LED modules will also be different. The difference is larger, and the larger the side viewing angle, the larger the difference in brightness. In order to reduce the brightness loss of the LED display screen and ensure the display effect when viewed from the front and the side at a large angle, in the embodiment of the present application, the LED modules are classified by measuring the front and side large-angle luminous brightness of the LED modules in front of the screen. Classification, and then make a reasonable gradient arrangement according to the screen frame scene, so that the LED modules with inconsistent brightness can be uniformly transitioned on an LED display screen in the way of brightness gradient, so that the human eye cannot detect the difference between different LED modules. The brightness difference between the two can improve the display effect of the LED display.

Please refer to FIG. 6 , which is a schematic flowchart of another display control method of an LED display screen provided by an embodiment of the present application. FIG. 6 can be understood as a refinement of the implementation process steps of the display control method of the LED display screen provided in the above-mentioned FIG. 4 .

First, the multi-angle luminous brightness measurement of the LED module (see step 601) includes measuring the front brightness value and the front brightness display uniformity of the LED module from the front, and measuring the side brightness display uniformity of the LED module from the side multi-angle. Then, according to the measured brightness difference, it is judged whether the LED module has the problem of uneven side brightness display (refer to step 602), and the first threshold can be used as the standard value of the uniformity of the side brightness display of the LED module, and the first threshold is not a The fixed value can vary depending on the application scenario. When the uniformity of the side brightness display of the LED module is greater than the first threshold, it is considered that the LED module does not have the problem of uneven side brightness display; If the uniformity of the side brightness display of the module is not greater than the first threshold, it is considered that the LED module has a problem of uneven side brightness display.

Specifically, in the case that the LED module does not have the problem of uneven side brightness display, according to the front brightness value obtained by measuring the LED module, the LED modules are classified and sorted (see step 603), and the measured front brightness is the highest. As the first LED module, the LED module is placed in the center of the LED display screen, and the distance between other LED modules and the first LED module is proportional to the difference between it and the front brightness of the first LED module ( Refer to step 604), that is, the larger the difference, the greater the deviation between the front brightness of the LED module to be sorted and the front brightness of the first LED module, and the LED module to be sorted should be placed at a distance from the first LED module. The farther the distance of the group is; the smaller the difference is, the smaller the deviation between the front brightness of the LED module to be sorted and the front brightness of the first LED module is, and the LED module to be sorted should be placed at a distance from the first LED module. The closer the distance between the LED modules is. Its arrangement can be referred to FIG. 7a. FIG. 7a is a schematic structural diagram of an arrangement of LED modules according to an embodiment of the application. As can be seen from FIG. 7a, the first LED module with the highest frontal brightness is placed in the LED display screen. In the center position, the distance between other LED modules and the first LED module is proportional to the difference between the front brightness of the first LED module and the first LED module. The smaller the difference indicated by the serial number, the smaller the distance. It can be seen from the serial number , the front brightness of the LED display screen is uniformly gradient from high to low from the center position to the surrounding position, which greatly improves the display uniformity of the LED display screen. The arrangement method can also refer to FIG. 7b, which is a schematic structural diagram of another LED module arrangement provided by the embodiment of the application. As can be seen from FIG. 7b, there are two first LED modules with the highest frontal brightness placed side by side. At the center of the LED display screen, the distance between other LED modules and the first LED module is proportional to the difference between the front brightness of the first LED module and the other LED modules. The smaller the difference indicated by the serial number, the smaller the distance. , It can be seen from the serial number that the front brightness of the LED display screen is uniformly gradient from high to low from the center position to the surrounding position, which greatly improves the display uniformity of the LED display screen.

On the other hand, in the case that the LED module has a problem of uneven brightness display on the side, it is further determined which of the brightness display unevenness on the side and the brightness display on the front side of the LED module is greater (see step 605). When the unevenness of the side brightness display of the LED modules is greater than the unevenness of the front brightness display, the LED modules are first classified and sorted according to the brightness display uniformity of the side (see step 606 ). At this time, it is necessary to first determine the reference point of the LED display screen as the starting module position according to the installation height of the LED display screen and the position of the main observation human eye (refer to step 607), and display the LED module with the worst uniformity of side brightness. (referred to as the second LED module here), that is, the LED module with the largest deviation of the luminous brightness value measured at the same large angle on the left and right sides is placed at the starting module position of the LED display screen. The position is generally the corner of the LED display, preferably at a height close to the position of the human eye, which can minimize the problem of uneven brightness on the side that can be perceived by the human eye when observing the LED display. Then, the difference between the side brightness display uniformity of the LED modules to be sorted and the side brightness display uniformity of the second LED module is used as the second difference, and the LED modules to be sorted are determined according to the second difference. At a position with a second distance from the second LED module, the second distance and the second difference are in a proportional relationship, that is, the larger the second difference is, the more uniform the side brightness of the LED modules to be sorted is. The greater the difference in the uniformity of the side brightness display of the second LED module, the farther the LED module to be sorted should be placed from the second LED module; the smaller the second difference, the more The smaller the deviation between the side brightness display uniformity of the LED module and the side brightness display uniformity of the second LED module is, the closer the distance to the second LED module, the LED modules to be sorted should be placed. For its arrangement, please refer to FIG. 7c. FIG. 7c is a schematic structural diagram of another LED module arrangement provided by the embodiment of the present application. It can be seen from FIG. The position of the lower right corner in the LED display screen is the closest to the main observation position of the human eye. The distance between other LED modules and the second LED module is determined by the difference between the brightness display uniformity of the second LED module and the side of the second LED module. Proportional, the smaller the difference, the smaller the distance. The value on each LED module indicates the unevenness of its side brightness display. The larger the value, the more uneven the side brightness display. It can be seen from the numerical arrangement, The side brightness display uniformity of the LED display screen is uniformly gradient from the lower right corner position to the upper left corner position from low to high, which greatly improves the display uniformity of the LED display screen. The arrangement method can also refer to FIG. 7d, which is a schematic structural diagram of another LED module arrangement provided by the embodiment of the application. As can be seen from FIG. 7d, the second LED module with the worst side brightness display uniformity is placed. In the right center position of the LED display screen, this position is closest to the main observation position of the human eye, and the distance between other LED modules and the second LED module is the difference between the brightness of the second LED module and the side brightness of the second LED module. The value is proportional. The smaller the difference, the smaller the distance. The value on each LED module indicates the unevenness of its side brightness display. The larger the value, the more uneven the side brightness display. The display uniformity of the side brightness of the LED display screen gradually changes uniformly from the center position on the right to the center position on the left from low to high, which greatly improves the display uniformity of the LED display.

Further, when there are at least two LED modules and the second LED module is separated by a second distance, the position of the LED modules can be adjusted according to the frontal brightness value on the basis of the results of the first classification and sorting ( See step 608). For example, the LED modules to be sorted can be sorted from top to bottom and from right to left according to their front display brightness in descending order. This not only adjusts the position of the screen module with uneven side brightness display, but also considers the influence of the front brightness on the display effect of the screen itself, and the frame screen does not need to be adjusted by human eyes, which greatly improves the display effect of the LED display. and show efficiency.

On the other hand, when the unevenness of the side brightness display of the LED module is not greater than the unevenness of the front brightness display, according to the front brightness value obtained by measuring the LED module, the LED module is first graded and sorted ( See step 609). At this time, it is necessary to first determine the reference point of the LED display screen as the starting module position according to the installation height of the LED display screen and the position of the main observation human eye (refer to step 610), and select the LED module with the worst front brightness (here It is called the third LED module), which is placed at the starting module position of the LED display screen. The starting module position is generally the corner position of the LED display screen. Minimize the problem of uneven brightness display on the side that can be perceived by the human eye when observing the LED display. Then, the difference between the front brightness of the LED modules to be sorted and the front brightness of the third LED module is used as the third difference, and the LED modules to be sorted are determined according to the third difference. At the position away from the third distance, the third distance and the third difference are in a proportional relationship, that is, the larger the third difference, the difference between the front brightness of the LED module to be sorted and the front brightness of the third LED module. The larger the value, the farther the LED module to be sorted should be placed from the third LED module; the smaller the third difference is, it means that the front brightness of the LED module to be sorted is different from that of the third LED module. The smaller the deviation of the frontal brightness of , the LED module to be sorted should be placed in a position closer to the distance from the third LED module. It can be seen from the above arrangement that the front brightness of the LED display screen changes uniformly from low to high from the position closest to the main observer's eye to the position farthest from the main observer's eye, which greatly improves the display uniformity of the LED display.

Further, in the case where there are at least two LED modules and the third LED module at a third distance, the LED modules can be adjusted according to the uniformity of the side brightness display on the basis of the results of the first classification and sorting. position (see step 611). For example, the LED modules to be sorted can be sorted from top to bottom and from right to left according to their lateral brightness display uniformity from large to small. This can significantly reduce or even eliminate the problem of uneven brightness display on the side that can be seen by the human eye, greatly improve the display uniformity of the LED display, and does not need to perform full screen correction, reducing the brightness loss during the full screen correction of the module, improving the performance of the LED display. display efficiency.

The methods of the embodiments of the present application are described in detail above, and the apparatuses of the embodiments of the present application are provided below.

Please refer to FIG. 8 , which is a schematic structural diagram of a display control device for an LED display screen provided by an embodiment of the present application. The display control device 80 of the LED display screen may include an acquisition unit 801 and a determination unit 802, wherein the description of each unit is as follows:

The acquiring unit 801 is used for acquiring display data of the LED module; the above-mentioned display data includes a first uniformity, a second uniformity and a first brightness value, and the above-mentioned first uniformity represents the brightness display obtained by measuring the above-mentioned LED module from the front The degree of uniformity, the second uniformity represents the degree of uniformity of the brightness display obtained by measuring the LED module from the side, and the first brightness value represents the brightness value obtained by measuring the LED module from the front;

A determining unit 802, configured to determine the position of the LED module in the LED display screen according to the first brightness value when the second uniformity is greater than the first threshold;

The determining unit 802 is further configured to determine, according to the first uniformity, the second uniformity, and the first brightness value, that the LED module is in the position in the LED display.

In a possible implementation manner, the determining unit 802 is specifically configured to determine, according to the first difference between the first brightness value and the brightness value of the center point of the LED display screen, that the LED module is located between the LED display and the LED display. The position between the center point of the screen and the first distance, the first distance and the first difference are in a proportional relationship.

In a possible implementation manner, the above-mentioned determining unit 802 is further configured to, in the case that the above-mentioned second uniformity degree is smaller than the above-mentioned first uniformity degree, according to the uniformity between the above-mentioned second uniformity degree and the reference point of the LED display screen The second difference in degrees determines that the LED module is located at a second distance from the reference point, the second distance and the second difference are in a proportional relationship, and the position of the reference point on the LED display is determined by The installation height of the above-mentioned LED display screen and the position of the human eye are determined.

In a possible implementation manner, the above-mentioned apparatus 80 further includes:

The sorting unit 803 is configured to adjust the position sorting of the LED modules according to the first brightness value when at least two of the LED modules are separated from the reference point by the second distance.

In a possible implementation manner, the above-mentioned determining unit 802 is further configured to, in the case that the above-mentioned second uniformity is not less than the above-mentioned first uniformity, according to the difference between the above-mentioned first brightness value and the reference point of the above-mentioned LED display screen The third difference of luminance values determines that the LED module is located at a third distance from the reference point, the third distance and the third difference are in a proportional relationship, and the position of the reference point on the LED display screen It is determined by the installation height of the above-mentioned LED display screen and the position of the human eye.

In a possible implementation manner, the sorting unit 803 is further configured to adjust the LED modules according to the second uniformity when at least two of the LED modules are separated from the reference point by the second distance position sorting.

According to the embodiment of the present application, each unit in the apparatus shown in FIG. 8 may be merged into one or several other units, respectively or all, or some of the unit(s) may be further divided into smaller functional units. It is composed of multiple units, which can realize the same operation without affecting the realization of the technical effects of the embodiments of the present application. The above-mentioned units are divided based on logical functions. In practical applications, the function of one unit may also be implemented by multiple units, or the functions of multiple units may be implemented by one unit. In other embodiments of the present application, the terminal-based terminal may also include other units. In practical applications, these functions may also be implemented with the assistance of other units, and may be implemented by cooperation of multiple units.

It should be noted that, the implementation of each unit may also correspond to the corresponding description with reference to the method embodiments shown in FIG. 4 and FIG. 6 .

In the display control device of the LED display screen described in FIG. 8 , the LED modules are measured for multi-angle luminous brightness, and then the LED modules are classified and graded according to the brightness difference between the LED modules, and the LED modules are classified and graded according to the classification and classification results. The screen is arranged in order to assemble a complete LED display with high uniformity and brightness, which greatly improves the display effect and display efficiency of the LED display.

Please refer to FIG. 9 . FIG. 9 is a schematic structural diagram of a display control device 90 for an LED display screen provided by an embodiment of the present application. The display control device 90 for the LED display screen may include a memory 901 and a processor 902 . Further optionally, a bus 903 may also be included, wherein the memory 901 and the processor 902 are connected through the bus 903 .

Among them, the memory 901 is used to provide a storage space, and data such as an operating system and a computer program can be stored in the storage space. The memory 901 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read only memory (EPROM), or Portable read-only memory (compact disc read-only memory, CD-ROM).

The processor 902 is a module that performs arithmetic operations and logical operations, and can be a processing module such as a central processing unit (CPU), a graphics processing unit (GPU), or a microprocessor (microprocessor unit, MPU). of one or more combinations.

A computer program is stored in the memory 901, and the processor 902 invokes the computer program stored in the memory 901 to perform the following operations:

In the embodiment of the present application, the display data of the LED module is obtained first, and a light sensor can be used as a device for measuring the LED module to measure the front luminous brightness and the side multi-angle luminous brightness of the LED module. By changing the front and rear of the measuring device The luminous brightness value or illuminance value of the LED module at different angles is obtained from the left and right positions. The above-mentioned display data mainly includes the first uniformity, the second uniformity and the first brightness value. The first uniformity represents the measurement of the LED module from the front. The brightness display uniformity, the larger the value of the first uniformity, the higher the brightness display uniformity of the front of the LED module, the second uniformity is the brightness display uniformity obtained by measuring the above LED module from the side, the second uniformity The larger the value, the higher the uniformity of the brightness display on the side of the LED module. The first brightness value represents the brightness value obtained by measuring the above-mentioned LED module from the front. The larger the first brightness value, the higher the front brightness of the LED module. Then, according to the first uniformity, the second uniformity and the first brightness value, the position of the LED module in the LED display screen is jointly determined, that is, the splicing method of the LED module. Specifically, a first threshold value is used as a standard value of the uniformity of the side brightness display of the LED module. The first threshold value is not a fixed value and may vary according to different application scenarios. When the second uniformity is greater than the first threshold, it is considered that the LED module does not have the problem of uneven side brightness display. At this time, the position of the LED module in the LED display screen is determined according to the first brightness value. The larger the first brightness value is, the closer the position of the LED module in the LED display is to the center of the LED display. When the second uniformity is not greater than the first threshold, it is considered that the LED module has the problem of uneven side brightness display. At this time, according to the first uniformity, the second uniformity and the first brightness value, the above-mentioned The LED modules are classified and graded, and the positions of the above-mentioned LED modules in the LED display screen are determined together, and the screen frames are sorted, so as to assemble a complete LED display screen with high uniformity and brightness, which greatly improves the display of the LED display screen. effect and display efficiency.

In a possible implementation manner, in terms of determining the position of the LED module in the LED display screen according to the first brightness value, the processor 902 is further configured to execute:

In a possible implementation manner, in terms of determining the position of the LED module in the LED display screen according to the first uniformity, the second uniformity and the first brightness value, the processor 902 further uses To execute:

In a possible implementation manner, after it is determined that the LED module is located at a second distance from the reference point, the processor 902 is further configured to execute:

In a possible implementation manner, in terms of determining the position of the LED module in the LED display screen according to the first uniformity, the second uniformity and the first brightness value of the LED module, the above The processor 902 is also used to perform:

In a possible implementation manner, after determining that the LED module is located at a third distance from the reference point, the processor 902 is further configured to execute:

It should be noted that, the specific implementation of the display control device 90 of the LED display screen may also correspond to the corresponding descriptions of the method embodiments shown in FIG. 4 and FIG. 6 .

In the display control device 90 of the LED display screen described in FIG. 9 , the LED modules are subjected to multi-angle luminous brightness measurement, and then classified and graded according to the brightness difference between the LED modules, and the LED modules are classified and graded according to the classification and classification results. The screen is arranged in order to assemble a complete LED display with high uniformity and brightness, which greatly improves the display effect and display efficiency of the LED display.

Embodiments of the present application also provide a computer-readable storage medium, in which computer programs or instructions are stored; when the computer programs or instructions are executed on one or more processors, FIG. 4 and FIG. 4 can be implemented. 6 shows the display control method of the LED display screen.

The embodiment of the present application also provides a computer program product, when the computer program product runs on the processor, the display control method of the LED display screen shown in FIG. 4 and FIG. 6 can be implemented.

To sum up, by implementing the embodiments of the present application, the multi-angle luminous brightness measurement is performed on the LED modules, and then the LED modules are classified and graded according to the brightness difference between the LED modules, and the LED modules are screened and sorted according to the classification and classification results. , so as to assemble a complete LED display with high uniformity and brightness, which greatly improves the display effect and display efficiency of the LED display.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented, and the processes can be completed by hardware related to a computer program, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed , which may include the processes of the foregoing method embodiments. The aforementioned storage medium includes: read-only memory ROM or random-access storage memory RAM, magnetic disk or optical disk and other media that can store computer program codes.

Claims

A display control method for an LED display screen, comprising:

Obtain the display data of the LED module; the display data includes a first uniformity, a second uniformity and a first brightness value, and the first uniformity represents the brightness display uniformity obtained by measuring the LED module from the front, The second uniformity represents the brightness display uniformity obtained by measuring the LED module from the side, and the first brightness value represents the brightness value obtained by measuring the LED module from the front;

In the case that the second uniformity is greater than the first threshold, determining the position of the LED module in the LED display screen according to the first brightness value;

In the case that the second uniformity is not greater than the first threshold, according to the first uniformity, the second uniformity and the first brightness value, it is determined that the LED module is in the LED position in the display.
The method according to claim 1, wherein the determining the position of the LED module in the LED display screen according to the first brightness value comprises:

According to the first difference between the first brightness value and the brightness value of the center point of the LED display screen, it is determined that the LED module is located at a first distance from the center point of the LED display screen. The first distance and the first difference are in a proportional relationship.
The method according to claim 1 or 2, characterized in that, according to the first uniformity, the second uniformity and the first brightness value, it is determined that the LED module is displayed on the LED display position on the screen, including:

In the case where the second uniformity is smaller than the first uniformity, according to the second difference between the second uniformity and the uniformity of the reference point of the LED display screen, it is determined that the LED module is located at The position of the second distance from the reference point, the second distance and the second difference are in a proportional relationship, and the position of the reference point on the LED display is determined by the installation height of the LED display and the position of the human eye.
The method according to claim 3, wherein after determining that the LED module is located at a second distance from the reference point, the method further comprises:

In the case that at least two of the LED modules are separated from the reference point by the second distance, the position order of the LED modules is adjusted according to the first brightness value.
The method according to claim 1 or 2, wherein the LED module is determined according to the first uniformity, the second uniformity and the first brightness value of the LED module. Group positions in the LED display, including:

Under the condition that the second uniformity is not less than the first uniformity, the LED module is determined according to the third difference between the first brightness value and the brightness value of the reference point of the LED display screen is located at a third distance from the reference point, the third distance and the third difference are in a proportional relationship, and the position of the reference point on the LED display is determined by the installation of the LED display The height and the position of the human eye are determined.
The method according to claim 5, wherein after determining that the LED module is located at a third distance from the reference point, the method further comprises:

When at least two of the LED modules are separated from the reference point by the second distance, the position order of the LED modules is adjusted according to the second uniformity.
A display control device for an LED display screen, characterized in that it includes:

an acquisition unit, used for acquiring display data of the LED module; the display data includes a first uniformity, a second uniformity and a first brightness value, and the first uniformity represents a value obtained by measuring the LED module from the front The brightness display uniformity degree, the second uniformity degree represents the brightness display uniformity degree obtained by measuring the LED module from the side, and the first brightness value represents the brightness value measured from the front side of the LED module;

a determining unit, configured to determine the position of the LED module in the LED display screen according to the first brightness value when the second uniformity is greater than the first threshold;

The determining unit is further configured to determine, according to the first uniformity, the second uniformity, and the first brightness value, when the second uniformity is not greater than the first threshold value. The position of the LED module in the LED display screen.
The device according to claim 7, wherein the determining unit is specifically configured to determine the LED according to the first difference between the first brightness value and the brightness value of the center point of the LED display screen The module is located at a first distance from the center point of the LED display screen, and the first distance and the first difference are in a proportional relationship.
The device according to claim 7 or 8, wherein the determining unit is further configured to, in the case that the second uniformity is smaller than the first uniformity, determine the difference between the second uniformity and the The second difference of the uniformity of the reference point of the LED display screen determines that the LED module is located at a second distance from the reference point, and the second distance and the second difference are proportional to relationship, the position of the reference point on the LED display screen is determined by the installation height of the LED display screen and the position of the human eye.
The apparatus according to claim 9, wherein the apparatus further comprises:

The sorting unit is configured to adjust the position sorting of the LED modules according to the first brightness value when at least two of the LED modules are separated from the reference point by the second distance.
The device according to claim 10, wherein the determining unit is further configured to, in the case that the second uniformity is not less than the first uniformity, determine the difference between the first brightness value and the The third difference between the luminance values of the reference point of the LED display screen determines that the LED module is located at a third distance from the reference point, and the third distance and the third difference are in a proportional relationship , the position of the reference point on the LED display screen is determined by the installation height of the LED display screen and the position of the human eye.
The device according to claim 11, wherein the sorting unit is further configured to, when at least two of the LED modules are separated from the reference point by the second distance, according to the second Uniformity, adjust the position sorting of the LED modules.
An electronic device, characterized in that it includes: a processor and a memory, wherein the memory stores program instructions; when the program instructions are executed by the processor, the processor is made to execute the instructions in claims 1 to 6 The method of any one.
A computer-readable storage medium, characterized in that a computer program or an instruction is stored in the computer-readable storage medium; when the computer program or the instruction is run on one or more processors, the The method of any one of claims 1 to 6.