Display screen brightness and darkness adjustment method and LED display screen

Abstract

The embodiment of the present invention relates to a method for adjusting the brightness and darkness of a display screen and an LED display screen applicable thereto. The adjustment method, for example, includes: responding to a sequence of key operations by a user on a remote controller, sequentially controlling the spliced ​​display screen to display a specified color screen and highlighting a default cursor position, controlling the cursor to move to select a unit to be adjusted, determining the edge of the unit to be adjusted that needs to be adjusted for brightness and darkness, adjusting the brightness of the edge, and solidifying the brightness adjustment effect on the edge. The embodiment of the present invention can save complex manual operations, and brightness and darkness can be adjusted directly using a remote controller, thereby solving the problem of on-site maintenance.

Description

Technical Field

[0001] The present invention relates to the field of display and correction technology, and in particular to a method for adjusting bright and dark lines of a display screen and an LED display screen. Background Art

[0002] Compared with traditional LCD and other display screens, the biggest feature of LED display screens is that they can be spliced ​​arbitrarily according to needs to meet the needs of different scenarios. For this reason, LED display screens are made up of several splicing units such as LED cabinets or LED light panels. Therefore, if the splicing units need to be replaced, then after the splicing units are replaced, the splicing seams between the splicing units will be inconsistent in size, resulting in bright and dark lines caused by splicing. At this time, adjustments are needed to ensure a good display effect. At present, it relies on host computer software for adjustment, such as the need to use computers and software on site or the need to use a complete set of calibration systems. The operation is complicated and not suitable for general display operators. Moreover, it needs to be operated in front of a computer, and the scope of operation is limited and not flexible enough. Therefore, for LED display screens such as LED conference screens, a simple and low-cost technical solution is needed to achieve rapid adjustment of bright and dark lines after replacing the LED cabinet or LED light panel. Summary of the invention

[0003] In view of this, an embodiment of the present invention provides a method for adjusting bright and dark lines of a display screen and an LED display screen, so as to achieve rapid adjustment of bright and dark lines.

[0004] On the one hand, an embodiment of the present invention provides a method for adjusting the brightness and darkness of a display screen, comprising: responding to a first button operation on a remote control by a user, controlling the spliced ​​display screen to display a specified color picture and highlighting a default cursor position; responding to a second button operation on the remote control by a user, controlling the cursor to move to select a unit to be adjusted; responding to a third button operation on the remote control by a user, determining an edge of the unit to be adjusted that requires brightness and darkness adjustment; responding to a fourth button operation on the remote control by a user, adjusting the brightness of the edge; and responding to a fifth button operation on the remote control by the user, solidifying the brightness adjustment effect on the edge.

[0005] The display screen light and dark line adjustment method of this embodiment can save complicated manual operation and directly use a remote control to solve the problem of on-site maintenance; furthermore, the use cost is low and no additional calibration equipment and control equipment are required; in addition, the operation is flexible and can be performed at any position in front of the spliced ​​display screen, which is convenient for operation and effect observation.

[0006] In one embodiment of the present invention, responding to a first button operation on a remote control by a user, controlling the spliced ​​display screen to display a specified color screen and highlighting a default cursor position includes: responding to the first button operation on the remote control by a user, controlling the spliced ​​display screen to display a white screen, making the default cursor position a splicing unit centered on the spliced ​​display screen, and controlling the centered splicing unit to flash.

[0007] In one embodiment of the present invention, the spliced ​​display screen includes an embedded processor installed with an operating system, a display control circuit and a remote control command receiver electrically connected to the embedded processor, multiple output ports electrically connected to the display control circuit, and multiple splicing units electrically connected to a part or all of the multiple output ports and spliced ​​together; the responding to a first key operation of the user on the remote control to control the spliced ​​display screen to display a specified color screen and highlight a default cursor position includes: the embedded processor receives the remote control command generated by the remote control due to the first key operation through the remote control command receiver; the embedded processor enters a function option menu in response to the remote control command and selects a light and dark line adjustment function to generate a display control signal; and the display control circuit controls the multiple splicing units to display the specified color screen and highlight the default cursor position according to the display control signal.

[0008] In one embodiment of the present invention, responding to the user's third button operation on the remote control to determine the sides of the unit to be adjusted that need to be adjusted for light and dark lines includes: responding to the user's first operation on the designated key on the remote control to determine that the sides of the unit to be adjusted that need to be adjusted for light and dark lines are all sides of the unit to be adjusted; or responding to the user's second operation on the designated key on the remote control to determine that the side of the unit to be adjusted that needs to be adjusted for light and dark lines is one side of the unit to be adjusted.

[0009] In one embodiment of the present invention, the unit to be adjusted is an LED box equipped with a receiving card, or an LED light board in the LED box equipped with a receiving card.

[0010] On the other hand, an embodiment of the present invention provides an LED display screen, comprising: a system controller and a plurality of splicing units. The system controller comprises: an embedded processor with an operating system installed, a remote control command receiver electrically connected to the embedded processor, a display control circuit electrically connected to the embedded processor, and a plurality of output ports electrically connected to the display control circuit. The plurality of splicing units are electrically connected to a part or all of the plurality of output ports and are spliced ​​together in rows and columns. The remote control command receiver, the embedded processor and the display control circuit work together to: respond to a first key operation of a user on a remote controller, control the plurality of splicing units to display a specified color screen and highlight a default cursor position; respond to a second key operation of a user on the remote controller, control the cursor to move to select a unit to be adjusted, wherein the unit to be adjusted is one of the plurality of splicing units or a subunit of one of the plurality of splicing units; respond to a third key operation of a user on the remote controller, determine the edge of the unit to be adjusted that needs to be adjusted for light and dark lines; respond to a fourth key operation of a user on the remote controller, adjust the brightness of the edge; and respond to a fifth key operation of a user on the remote controller, solidify the brightness adjustment effect on the edge.

[0011] The LED display screen of this embodiment can save complicated manual operations, and the brightness and darkness can be adjusted directly with a remote control, thus solving the problem of on-site maintenance; furthermore, the use cost is low, and no additional calibration equipment and control equipment are required; in addition, the operation is flexible, and the operation can be performed at any position in front of the LED display screen, which is convenient for operation and effect observation.

[0012] In one embodiment of the present invention, the remote control command receiver includes an infrared receiver and / or a Bluetooth module; and the display control circuit is electrically connected to the embedded processor via a serial port and an LVDS channel.

[0013] In one embodiment of the present invention, the system controller includes: an adapter board, which is provided with a remote control board interface and the multiple output ports; a main control card, which is plugged and fixed to the adapter board through a first plug-in component, wherein the main control card is provided with the embedded processor, and the embedded processor is electrically connected to the remote control board interface through the first plug-in component; a display control card, which is plugged and fixed to the adapter board through a second plug-in component, wherein the display control card is provided with the display control circuit, and the display control circuit is electrically connected to the embedded processor through the second plug-in component, the adapter board and the first plug-in component, and is electrically connected to the multiple output ports through the second plug-in component; and a remote control board, which is electrically connected to the remote control board interface and is provided with an infrared receiver for infrared connection with the remote controller to serve as the remote control command receiver.

[0014] In one embodiment of the present invention, the system controller further comprises: a Bluetooth module, which is disposed on the adapter board and electrically connected to the embedded processor, wherein the Bluetooth module is used to connect to the remote controller via Bluetooth to serve as the remote control command receiver.

[0015] In one embodiment of the present invention, the display control circuit includes a microcontroller, a programmable logic device and at least one Ethernet transceiver, the programmable logic device is electrically connected to the microcontroller, the at least one Ethernet transceiver is electrically connected to the multiple output ports and is electrically connected to the programmable logic device through a SerDes channel, the multiple output ports are respectively Ethernet interfaces; and the at least one Ethernet transceiver includes a multi-port Ethernet transceiver chip and / or a 5G Ethernet transceiver chip.

[0016] In summary, the above technical scheme of the embodiment of the present invention can have the following beneficial effects: the display screen light and dark line adjustment method and the LED display screen of this embodiment can save complicated manual operation, and the light and dark line adjustment can be performed directly using a remote control, thereby solving the problem of on-site maintenance; furthermore, the use cost is low, and no additional calibration equipment and control equipment are required; in addition, the operation is flexible, and the operation can be performed at any position in front of a spliced ​​display screen such as an LED display screen, thereby facilitating operation and effect observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of an LED display screen provided by an embodiment of the present invention.

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the system controller shown.

[0020] Figure 3 for Figure 2 The diagram shows the structure of the control circuit.

[0021] Figure 4A for Figure 1 A schematic structural diagram of a specific implementation of the system controller is shown.

[0022] Figure 4B for Figure 4A A structural schematic diagram of the main control card shown.

[0023] Figure 4C for Figure 4A The figure shows a structural schematic diagram of a display control card.

[0024] Figure 5 A schematic flow chart of a method for adjusting bright and dark lines of a display screen provided by an embodiment of the present invention.

[0025] Figure 6 A schematic diagram of the structure of a remote controller provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1 The embodiment of the present invention provides an LED display screen 10, comprising: a system controller 11 and a plurality of splicing units 13 electrically connected to the system controller 11. The plurality of splicing units 13 are spliced ​​together in rows and columns. Figure 1 In the figure, each splicing unit 13 is arranged in 8×8 rows and columns, with a total of sixty-four splicing units 13, but this is only an example and is not intended to limit the embodiments of the present invention. Furthermore, each splicing unit 13 is, for example, an LED box equipped with a receiving card (or scanning card); and the structure of the receiving card is a mature technology, which includes, for example, an Ethernet interface as an input port, an Ethernet transceiver, a programmable logic device, an Ethernet interface as a cascade port, and a cable interface as an output port for display data groups and control signals. In addition, a single splicing unit 13 includes, for example, a single LED light board or a plurality of LED light boards spliced ​​together, which use LED lights as display pixels.

[0028] See also Figure 2The system controller 11, for example, includes a remote control command receiver 111, an embedded processor 113, a display control circuit 115 and a plurality of output ports 117. The remote control command receiver 111 is, for example, an infrared receiver and / or a Bluetooth module, which is electrically connected to the embedded processor 113. The embedded processor 113 is typically installed with an operating system, such as an Android operating system or other similar operating system, which is, for example, an RK3288 processor based on an ARM core. The display control circuit 115 is electrically connected to the embedded processor 113 and the plurality of output ports 117. For example, the plurality of output ports 117 are, for example, Ethernet interfaces, and of course, they can also be other types of interfaces, such as an HDMI interface. Some or all of the plurality of output ports 117 are electrically connected to the plurality of splicing units 13. Figure 1 As for the sixty-four splicing units 13 shown, each output port 117 can carry a column (or a row) of eight splicing units 13, so eight output ports 117 are needed to carry these sixty-four splicing units 13; the eight splicing units 13 in the same column (or the same row) are connected in a cascade manner, for example, through a network cable.

[0029] See also Figure 3, the display control circuit 115 includes, for example, a microcontroller 1152, a programmable logic device 1154, a multi-port Ethernet transceiver 1156, and a 5G Ethernet transceiver 1158. Among them, the microcontroller 1152 is electrically connected to the embedded processor 113, for example, through a serial port (such as a UART port), which is, for example, an STM32 series single-chip microcomputer; the programmable logic device 1154 is electrically connected to the microcontroller 1152 and, for example, electrically connected to the embedded processor 113 through an LVDS (Low Voltage Differential Signaling) channel, so that image data in a differential signal format can be obtained from the embedded processor 113 through the LVDS channel. The multi-port Ethernet transceiver 1156 is electrically connected to the programmable logic device 1154 through a SerDes (Serializer and Deserializer) channel. The multi-port Ethernet transceiver 1156 is, for example, an eight-port Ethernet transceiver chip, which is electrically connected to the programmable logic device 1154 through, for example, two SerDes channels, and each SerDes channel includes two pairs of differential lines, specifically, one pair of differential lines in the two pairs of differential lines is used for data transmission, and the other pair of differential lines is used for data reception; accordingly, the programmable logic device 1154 is configured with a SerDes interface; each output port 117 is, for example, an Ethernet interface, and eight of the output ports 117 can be electrically connected to the eight-port Ethernet transceiver. In this embodiment, a multi-port Ethernet transceiver 1156 is provided to carry multiple Ethernet interfaces, and the multi-port Ethernet transceiver 1156 is electrically connected to the programmable logic device 1154 using a SerDes channel. This can utilize the fewer pins of the programmable logic device 1154 to achieve a larger number of output port loads; for example, a single output load is 1G, and a general load is 650,000 pixels, so eight Ethernet interfaces can achieve 8G loads.

[0030] Furthermore, the 5G Ethernet transceiver 1158 is electrically connected to the programmable logic device 1154 through a SerDes channel. Specifically, the 5G Ethernet transceiver 1158 is, for example, two 5G Ethernet transceivers, each of which is electrically connected to a SerDes interface configured by the programmable logic device 1154 through a SerDes channel; accordingly, the two 5G Ethernet transceivers can be electrically connected to two Ethernet interfaces serving as output ports 117. In this embodiment, by adding a 5G Ethernet transceiver 1158, a single output carries 5G, and a 5G Ethernet interface carries the same load as five 1G Ethernet interfaces, which further improves the output carrying capacity of the display control circuit 115.

[0031] See also Figure 4A , Figure 4B and Figure 4C , as Figure 2A specific implementation of the system controller 11 in the embodiment of the present invention includes, for example, an adapter board 110, a main control card 1130, a display control card 1150, and a remote control board 1116. The adapter board 110 is provided with a remote control board interface 1114 and a Bluetooth module 1112, and the plurality of output ports 117 are provided on the adapter board 110. The main control card 1130 is provided with an embedded processor 113 and a plug-in assembly 1132, and the main control card 1130 is plugged and fixed to the adapter board 110 through the plug-in assembly 1132, so that the embedded processor 113 is electrically connected to the remote control board interface 1114 and the Bluetooth module 1112 through the plug-in assembly 1132; the plug-in assembly 1132 here is, for example, two 200-pin high-density connectors arranged in pairs or connectors with other pin numbers arranged in pairs. The display control card 1150 is provided with a display control circuit 115 and a plug assembly 1152, and the display control card 1150 is plugged and fixed to the adapter board 110 through the plug assembly 1152, so that the display control circuit 115 is electrically connected to the embedded processor 113 through the plug assembly 1152, the adapter board 110 and the plug assembly 1132, and is electrically connected to the multiple output ports 117 through the plug assembly 1152; the plug assembly 1152 here is, for example, two 200pin high-density connectors arranged in pairs or other pin number connectors arranged in pairs. Furthermore, the remote control board 1116 is electrically connected to the remote control board interface 1114, for example, connected to the remote control board interface 1114 through a flat cable; the remote control board 1116 here is provided with an infrared receiver 11160. The modular design of the system controller 11 of the present embodiment can be compatible with LED display screens of different sizes and / or functional requirements by appropriately increasing or decreasing the circuit elements of the adapter board 110 while keeping the hardware structure of the main control card 1130 and the display control card 1150 unchanged, thereby improving the design flexibility of the product and reducing the production design cost of the product.

[0032] A method for adjusting the brightness and darkness of a display screen suitable for the aforementioned LED display screen 10 will be described in detail below. Figure 5 As shown, the display screen bright and dark line adjustment method of this embodiment includes the steps of:

[0033] S51: In response to the user's first button operation on the remote control, the spliced ​​display screen is controlled to display a designated color image and highlight a default cursor position;

[0034] S53: In response to the user's second button operation on the remote controller, controlling the cursor to move to select a unit to be adjusted;

[0035] S55: In response to the user's operation of a third button on the remote controller, determining the edge of the unit to be adjusted that needs to be adjusted for brightness and darkness;

[0036] S57: In response to the user operating a fourth button on the remote controller, adjusting the brightness of the edge; and

[0037] S59: In response to the user's operation of the fifth button on the remote controller, solidifying the brightness adjustment effect on the edge.

[0038] In order to more clearly understand the display screen bright and dark line adjustment method of this embodiment, the following will be combined with Figure 6 The remote controller 60 shown in the figure is described in detail. The remote controller 60 includes the following buttons: 1) a main menu button, which can enter the function option menu; 2) direction buttons: which can control the direction, select functions, and move the cursor; 3) a middle confirmation button: which can confirm the currently selected function or the position of the light and dark line; 4) "+" and "-" buttons: which can respectively realize the increase and decrease functions to brighten or dim the brightness at the position of the light and dark line; and 5) a return button: which can return to the previous operation. Furthermore, the remote controller 60, for example, preferentially uses Bluetooth to connect to the LED display screen 10. If the Bluetooth connection fails, the infrared connection is automatically used.

[0039] As mentioned above, when the LED display screen 10 is installed or needs maintenance, it is assembled in units of LED boxes (or LED light panels) (as splicing units 13); and when the splicing units 13 are assembled and spliced, it is inevitable that the splicing between the splicing units 13 is too tight or too loose due to problems such as splicing accuracy and product process, which will cause irregular bright lines or dark lines to appear on the LED display screen 10 after splicing, collectively referred to as bright and dark lines. In response to this bright and dark line problem, this embodiment uses a remote control 60 to perform the following operations on the LED display screen 10.

[0040] (i) Use the remote control 60 to aim at the LED display screen 10, press the main menu key, enter the function option menu, select the function of adjusting the light and dark lines, and enter the light and dark line adjustment interface (corresponding to step S51). At this time, each splicing unit 13 of the LED display screen 10 will display a specified screen, such as a white screen, which is conducive to adjusting the adjustment coefficients of the three colors of RGB at one time, and highlight the default position of the cursor, for example, it will start flashing from the LED box in the center of the LED display screen 10. The flashing method can be the display of the entire LED box flickering, or it can be a row of lights flashing around the LED box; the main purpose is to remind the current position of the cursor; and the default position of the cursor here is the LED box in the center, which is conducive to reducing the number of arrow key presses required for subsequent selection of the unit to be adjusted (because from the LED box in the center, any other LED box can be reached with fewer cursor movements). After that, the user can press the arrow keys of the remote control 60 to control the cursor movement, select the LED box to be adjusted, until the unit to be adjusted is selected (corresponding to step S53); the unit to be adjusted here is, for example, the LED box (of course, in other embodiments, it can also be the LED light board in the LED box).

[0041] (ii) If the entire LED box needs to be adjusted, press the middle confirmation button of the remote control 60, which indicates that all sides of the unit to be adjusted need to be adjusted for brightness and darkness; if one side of the LED box needs to be adjusted, double-click the middle confirmation button of the remote control 60 to select one side of the unit to be adjusted, and then press the direction key to determine the side that needs to be adjusted (corresponding to step S55).

[0042] (iii) After determining the side of the unit to be adjusted that needs to be adjusted for light and dark lines, press the "+" or "-" key on the remote control 60 to make adjustments. If there are bright lines, press the "-" key to dim them; conversely, if there are dark lines, press the "+" key to brighten them (corresponding to step S57).

[0043] (iv) When the side adjustment of the unit to be adjusted that needs to be adjusted for light and dark lines is completed, press the middle confirmation key of the remote control 60 again, and you will be prompted whether to confirm the current adjustment effect. If the middle confirmation key is pressed again, the brightness adjustment effect can be solidified (corresponding to step S59). If you do not want to solidify it, press the cancel or return key.

[0044] In addition, it is worth mentioning that in the process of using the remote control 60 to adjust the brightness and darkness, the remote control instructions sent by the remote control 60 are sent to the embedded processor of the system controller 11 through the Bluetooth module 1112 (or the infrared receiver 11160) for processing. After processing, they are sent to the display control circuit 115 through the serial port, for example, to realize the display of the specified picture and process status for the brightness and darkness adjustment.

[0045] In summary, the method for adjusting the brightness and darkness of a display screen according to an embodiment of the present invention can save complicated manual operations and can be directly operated using a remote controller, thereby solving the problem of on-site maintenance. Furthermore, the method has low cost of use and does not require additional calibration equipment and control equipment. Furthermore, the method is flexible to operate and can be operated at any position in front of a spliced ​​display screen such as an LED display screen, thereby facilitating operation and effect observation.

[0046] In addition, it can be understood that the aforementioned embodiments are only exemplary descriptions of the present invention. Under the premise that the technical features do not conflict, the structures do not contradict, and the purpose of the present invention is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used in combination.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for adjusting bright and dark lines of an LED display screen, characterized in that: The LED display screen includes a system controller and M×N LED boxes with receiving cards, and the LED boxes in the same column or row are cascaded connected through network cables, wherein M and N are positive integers, and M×N≥2, and the system controller includes a remote control command receiver, and the method includes: In response to a first button operation by a user on the remote control, the spliced ​​display screen is controlled to display a designated color image and highlight a default cursor position; In response to a user operating a second button on the remote controller, controlling the cursor to move to select a cabinet to be adjusted; In response to a user operating a third button on the remote controller, determining a side of the cabinet to be adjusted that needs to be adjusted for brightness and darkness; In response to a fourth button operation on the remote controller by the user, adjusting the brightness of the edge; and In response to a fifth button operation on the remote controller by the user, solidifying the brightness adjustment effect on the edge; The spliced ​​display screen includes an embedded processor with an operating system installed, a display control circuit and a remote control command receiver electrically connected to the embedded processor, multiple output ports electrically connected to the display control circuit, and multiple boxes electrically connected to a part or all of the multiple output ports and spliced ​​together; the method of responding to a first key operation of a user on a remote control, controlling the spliced ​​display screen to display a specified color screen, and highlighting a default cursor position, includes: The embedded processor receives the remote control command generated by the remote controller due to the first button operation through the remote control command receiver; The embedded processor responds to the remote control command to enter a function option menu and select a brightness adjustment function to generate a display control signal; and The display control circuit controls the multiple boxes to display the designated color image and highlight the default cursor position according to the display control signal.

2. The method for adjusting the bright and dark lines of a display screen according to claim 1, characterized in that: The method of responding to the user's first button operation on the remote control, controlling the spliced ​​display screen to display a designated color image and highlighting a default cursor position, comprises: In response to the user's first button operation on the remote control, the spliced ​​display screen is controlled to display a white picture, the cursor is positioned by default as a box in the center of the spliced ​​display screen, and the box in the center is controlled to flash.

3. The method for adjusting bright and dark lines of a display screen according to claim 1, characterized in that: The step of responding to the user's operation of a third button on the remote controller to determine the side of the cabinet to be adjusted that needs to be adjusted for brightness and darkness includes: In response to a first operation of a designated key on the remote controller by a user, determining that the sides of the cabinet to be adjusted that need to be adjusted for brightness and darkness are all sides of the cabinet to be adjusted; or In response to a second operation of the user on the designated key on the remote controller, it is determined that the side of the to-be-adjusted cabinet that needs to be adjusted for brightness and darkness is an side of the to-be-adjusted cabinet.

4. The method for adjusting the bright and dark lines of a display screen according to claim 1, characterized in that: The box to be adjusted is an LED box equipped with a receiving card, or an LED light board in an LED box equipped with a receiving card.

5. An LED display screen, characterized in that: include: A system controller and multiple cabinets; the multiple cabinets are M×N LED cabinets with receiving cards, and the LED cabinets in the same column or row are cascaded connected through network cables, wherein M and N are positive integers, and M×N≥2; Wherein, the system controller comprises: an embedded processor with an operating system installed, a remote control command receiver electrically connected to the embedded processor, a display control circuit electrically connected to the embedded processor, and a plurality of output ports electrically connected to the display control circuit; The plurality of boxes are electrically connected to a part or all of the plurality of output ports and are spliced ​​together in rows and columns; and The remote control command receiver, the embedded processor and the display control circuit work together to: In response to a first button operation by a user on the remote control, the plurality of boxes are controlled to display a designated color image and highlight a default cursor position; In response to a second button operation on the remote controller by the user, controlling the cursor to move to select a cabinet to be adjusted, wherein the cabinet to be adjusted is one of the multiple cabinets or a subunit of one of the multiple cabinets; In response to a user operating a third button on the remote controller, determining a side of the cabinet to be adjusted that needs to be adjusted for brightness and darkness; In response to a fourth button operation on the remote controller by the user, adjusting the brightness of the edge; and In response to a fifth button operation on the remote controller by the user, solidifying the brightness adjustment effect on the edge; The system controller comprises: An adapter board, provided with a remote control board interface and the plurality of output ports; A main control card is plugged and fixed to the adapter board through a first plug-in assembly, wherein the main control card is provided with the embedded processor, and the embedded processor is electrically connected to the remote control board interface through the first plug-in assembly; a display control card, plugged and fixed to the adapter board via a second connector assembly, wherein the display control card is provided with the display control circuit, the display control circuit is electrically connected to the embedded processor via the second connector assembly, the adapter board and the first connector assembly, and is electrically connected to the plurality of output ports via the second connector assembly; and A remote control panel is electrically connected to the remote control panel interface and is provided with an infrared receiver for infrared connection with the remote controller to serve as the remote control instruction receiver.

6. The LED display screen according to claim 5, characterized in that: The remote control command receiver includes an infrared receiver and / or a Bluetooth module; and the display control circuit is electrically connected to the embedded processor via a serial port and an LVDS channel.

7. The LED display screen according to claim 5, characterized in that: The system controller also includes: A Bluetooth module is arranged on the adapter board and electrically connected to the embedded processor, wherein the Bluetooth module is used to connect to the remote controller via Bluetooth to serve as the remote control instruction receiver.

8. The LED display screen according to any one of claims 5 to 7, characterized in that: The display control circuit includes a microcontroller, a programmable logic device and at least one Ethernet transceiver, the programmable logic device is electrically connected to the microcontroller, the at least one Ethernet transceiver is electrically connected to the multiple output ports and is electrically connected to the programmable logic device through a SerDes channel, the multiple output ports are respectively Ethernet interfaces; and the at least one Ethernet transceiver includes a multi-port Ethernet transceiver chip and / or a 5G Ethernet transceiver chip.

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