LED video processing equipment

Abstract

The utility model discloses an LED video processing device which comprises an SDI interface, a video processing chip, a programmable logic controller unit, a control chip, an LED display screen and function keys. The SDI interface is connected with the video processing chip, and the video processing chip is connected with the programmable logic controller unit; the control chip is connected with the programmable logic controller unit, the LED display screen is connected with the programmable logic controller unit, and the function keys are connected with the control chip.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of electronic circuits, and in particular to an LED video processing device. Background Art

[0002] Currently, LED video processors generally do not support SDI signal input, requiring them to be connected via an SDI-to-HDMI converter. Based on customer market usage, demand for SDI signal input is increasing. However, connecting an SDI-to-HDMI converter to an LED video processor presents issues such as unstable signal sources, poor compatibility, inconvenient installation, and complex wiring. Furthermore, integrating the SDI-to-HDMI converter circuitry onto the LED video processor motherboard would occupy an HDMI port or consume significant I / O resources, significantly impacting existing LED video processor solutions. Utility Model Content

[0003] The utility model provides an LED video processing device to achieve the purpose of solving at least one problem existing in the prior art.

[0004] The embodiment of the utility model provides an LED video processing device, comprising: an SDI interface, a video processing chip, a programmable logic controller unit, a control chip, an LED display screen and function keys;

[0005] The SDI interface is connected to the video processing chip, and the video processing chip is connected to the programmable logic controller unit;

[0006] The control chip is connected to the programmable logic controller unit, the LED display screen is connected to the programmable logic controller unit, and the function keys are connected to the control chip.

[0007] Optionally, it further includes at least one HDMI interface, and one of the HDMI interfaces is connected to the programmable logic controller unit via an HDMI receiver.

[0008] Optionally, it also includes an audio input interface and an audio output interface;

[0009] The audio input interface and the audio output interface are connected to the programmable logic controller unit via a digital-to-analog conversion module respectively.

[0010] Optionally, a WiFi mainboard is further included, and the WiFi mainboard is connected to the programmable logic controller unit via a digital-to-analog conversion module.

[0011] Optionally, a second programmable logic controller is further included, and the second programmable logic controller is connected to the programmable logic controller unit.

[0012] Optionally, a third programmable logic controller is further included, and the third programmable logic controller is connected to the first programmable logic controller.

[0013] Optionally, a knob is further included, and the knob is connected to the control chip via a knob seat.

[0014] Optionally, a WiFi chip is further included, and the WiFi chip is connected to the control chip via a WiFi serial port module.

[0015] Optionally, it also includes an Ethernet transceiver chip, a network port transformer and a network interface;

[0016] The Ethernet transceiver chip is connected to the second programmable logic controller, and the network interface is connected to the Ethernet transceiver chip through the network port transformer.

[0017] Optionally, a DVI input interface is further included, and the DVI input interface is connected to the programmable logic controller unit through an HDMI receiver.

[0018] Compared with the prior art, the beneficial effect of the present invention is that: the present invention proposes an LED video processing device, which includes an SDI interface, a video processing chip and a programmable logic controller unit, wherein the SDI interface is connected to the programmable logic controller unit through the video processing chip, and the video processing chip is configured to perform equalization processing on the SDI video signal and then convert it into an SDO video signal, and output the SDO video signal to the programmable logic controller unit. Only a pair of serial interfaces of the programmable logic controller unit can be used to receive the above-mentioned SDO signal, thereby enabling the LED video processing device to have the function of directly receiving the SDI video signal. The programmable logic controller unit is configured to perform (decoding) processing on the SDI video signal, and there is no need to perform (decoding) processing on the SDI video signal using a TV chip. The SDI interface, video processing chip and programmable logic controller unit can be directly added to the LED video processor motherboard. The circuit of the LED video processing device is simple and occupies very little motherboard IO resources and PCB resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a structural block diagram of an LED video processing device in an embodiment;

[0020] Figure 2 is a structural block diagram of another LED video processing device in the embodiment;

[0021] Figure 3 FIG. 1 is a schematic diagram of the peripheral circuit of the video processing chip in an embodiment. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0023] Figure 1 This is a structural diagram of the LED video processing device in the embodiment, refer to Figure 1 , the LED video processing device includes: an SDI interface 100, a video processing chip 200, a programmable logic controller unit 3, a control chip 400, an LCD screen 500 and function buttons 600;

[0024] The SDI interface 100 is connected to the video processing chip 200, and the video processing chip 200 is connected to the programmable logic controller unit 3;

[0025] The control chip 400 is connected to the programmable logic controller unit 3 , the liquid crystal screen 500 is connected to the programmable logic controller unit 3 , and the function key 600 is connected to the control chip 400 .

[0026] In this solution, the SDI interface 100 is a serial digital component interface (Serial Digital Interface), which complies with the SMPTE (Society of Motion Picture and Television Engineers) standard and transmits 4:2:2 serial uncompressed digital component signals at a transmission rate of up to 270Mbps. It supports 10-bit quantization and can also support 8-bit or 9-bit video signals. It can also embed 4 to 8 channels of digital audio signals and transmit them using a single coaxial cable. This interface can achieve high-speed interconnection between systems.

[0027] The SDI interface has the following features: various coded output stream signals can be converted into the same SDI format, ensuring that in a 4:2:2 digital studio environment, various digital devices can be effectively and simply connected into a system;

[0028] Digital video signals can be directly connected to the system to ensure video and audio synchronization, while allowing digital audio with different sampling frequencies to be embedded, thereby using digital means to control, transmit and process signals, greatly simplifying the conversion between different formats of internal data and avoiding the resulting loss of image quality;

[0029] There are many types of SDI interfaces, which can be divided into standard definition SD-SDI, high definition HD-SDI and 3G-SDI according to the speed, with corresponding speeds of 270Mb / s, 1.485Gb / s and 2.97Gb / s respectively.

[0030] In this solution, the SDI interface 100 is configured to receive a standard SDI video signal source from a camera or a camera head.

[0031] In this solution, a video processing chip 200 is configured to perform equalization processing on the video signal source input thereto. There is no limitation on the type of the video processing chip 200, and a video processing chip with specific functions can be selected according to actual use requirements.

[0032] The video processing chip can be built with a variety of video enhancement and processing algorithms to achieve functions such as video format conversion, video image segmentation and splicing;

[0033] The video processing chip may be configured with integrated adaptive cable equalizer technology, for example, configured with SMPTE audio / video processing and integrated adaptive cable equalizer.

[0034] In this solution, the programmable logic controller unit 3 adopts a field programmable gate array (FPGA). The main features of FPGA include: users can program it according to their own needs to implement specific logic functions, it is easy to modify, and it is suitable for rapid prototyping and product iteration; it can handle multiple tasks simultaneously, greatly improving processing speed and efficiency; it contains a large number of logic units, storage units, multipliers, I / O pins, etc., which can meet complex design requirements; compared with traditional ASIC design, it can achieve lower power consumption in some application scenarios.

[0035] In this solution, the programmable logic controller unit 3 is configured to directly perform video decoding processing on the received SDI video signal.

[0036] Exemplarily, in this solution, the programmable logic controller unit 3 may include one or more FPGAs. When multiple FPGAs are configured, more (image processing) tasks and data can be processed in parallel, thereby significantly improving the overall processing speed and performance of the system; meeting more complex and resource-intensive designs.

[0037] In this solution, the control chip 400 can be an MCU (Microcontroller Unit). An MCU is a chip-level computer that reduces the frequency and specifications of a central processing unit (CPU) and integrates memory, timers, USB, A / D conversion, UART, PLC, DMA, and other interfaces on a single chip. MCUs have the characteristics of high integration, small size, high reliability, strong control performance, low voltage, low power consumption, ease of production of portable products, easy expansion, and high cost performance.

[0038] An MCU typically contains a CPU, memory (program and data memory), I / O ports, serial ports, timers, interrupt systems, special function registers, and other functional components. It also includes auxiliary components such as clock oscillators, bus controllers, and power supplies. Furthermore, MCUs can integrate data transmission interfaces such as SPI, I2C, and ISP.

[0039] In this solution, the control chip 400 is configured to coordinate the work of the FPGA and other peripheral devices; process user input, such as key operations, touch screen control, etc., and adjust the display content and mode according to user instructions; and configure the display parameters of the LED display, such as brightness, contrast, color adjustment, etc.

[0040] In this solution, an LED display screen is an electronic display device that uses light-emitting diodes (LEDs) as pixels to display images, text, videos and other information.

[0041] In this solution, a liquid crystal screen 500 is configured to display video information corresponding to the SDI video signal.

[0042] In this solution, the function button 600 is used to implement user input, such as adjusting the display content and mode; configuring the display parameters of the LED display screen, such as brightness, contrast, color adjustment, etc.

[0043] This embodiment provides an LED video processing device, which includes an SDI interface, a video processing chip, and a programmable logic controller unit. The SDI interface is connected to the programmable logic controller unit via the video processing chip. The video processing chip is configured to perform equalization processing on the SDI video signal and then convert it into an SDO video signal. The SDO video signal is output to the programmable logic controller unit. The SDO signal can be received using only a pair of serial interfaces of the programmable logic controller unit, thereby enabling the LED video processing device to directly receive the SDI video signal. The programmable logic controller unit is configured to perform (decoding) processing of the SDI video signal, eliminating the need for a TV chip to perform (decoding) processing of the SDI video signal. The SDI interface, video processing chip, and programmable logic controller unit can be directly added to the LED video processor motherboard. The circuit of the LED video processing device is simple, occupying very few motherboard IO resources and PCB resources.

[0044] exist Figure 1 Based on the solution shown, in one possible implementation scheme, the LED video processing device further includes at least one HDMI interface, and one HDMI interface is connected to the programmable logic controller unit via an HDMI receiver.

[0045] In this solution, the HDMI (High Definition Multimedia Interface) interface is a high-definition multimedia interface. The HDMI interface is used to connect to devices such as televisions and projectors to obtain audio or video signals.

[0046] In this solution, the HDMI receiver is specifically an HDMI signal processing chip. The HDMI receiver can be configured to receive high-definition digital signals sent from HDMI output devices (such as computers, game consoles, Blu-ray players, etc.), decode them, and separate the video and audio data; according to the requirements of the receiving device, the input video format may be converted to ensure compatibility with the display device or audio system; process and decode the audio signal, and then output it to the sound system or other audio output devices to provide high-quality sound effects.

[0047] Based on any of the foregoing solutions, in one possible implementation, the LED video processing device further includes an audio input interface and an audio output interface;

[0048] The audio input interface and the audio output interface are connected to the programmable logic controller unit through a digital-to-analog conversion module respectively.

[0049] In this solution, the audio input interface is used to access the audio signal. There is no limitation on the type of the audio input interface. The audio input interface can be a 3.5mm audio interface, RCA interface, XLR interface, USB interface or MIDI interface.

[0050] In this solution, the audio output interface is used to output audio signals. There is no limitation on the type of the audio output interface. The audio output interface can be a 3.5mm audio interface, an RCA interface, an HDMI interface, an optical fiber interface, or a Bluetooth interface.

[0051] In this solution, the digital-to-analog converter (DAC) is an electronic module that converts digital signals into analog signals.

[0052] The digital-to-analog conversion module is used to realize the digital-to-analog conversion between the audio input interface, audio output interface and programmable logic controller unit, that is, based on the numerical value of the digital signal, it generates the corresponding analog voltage or current signal according to certain conversion rules and accuracy.

[0053] Based on any of the aforementioned solutions, in one possible implementation, the LED video processing device further includes a WiFi mainboard, which is connected to the programmable logic controller unit via a digital-to-analog conversion module.

[0054] In this solution, the WiFi mainboard may be an M21 WiFi mainboard, which may include a processor, a chipset, an expansion slot, a backplane I / O interface, a GPIO interface, a built-in I / O interface, and the like.

[0055] In this solution, a WiFi motherboard is configured to achieve wireless screen projection.

[0056] Based on any of the foregoing solutions, in one possible implementation, the programmable logic controller unit includes a first programmable logic controller and a second programmable logic controller;

[0057] The video processing chip and the control chip are respectively connected to the first programmable logic controller, the second programmable logic controller is connected to the first programmable logic controller, and the LED display screen is connected to the second programmable logic controller.

[0058] In this solution, the LED video processing device includes a first programmable logic controller and a second programmable logic controller. Configuring multiple programmable logic controllers to work together can provide the LED video processing device with the following advantages:

[0059] Process more tasks and data in parallel, significantly improving the overall processing speed and performance of the system; meeting the needs of more complex and resource-intensive designs; implementing key functions on two FPGAs so that when one fails, the other can take over, thereby improving system reliability and stability; and allocating different functional modules to different FPGAs based on system requirements to achieve clearer functional division and modular design.

[0060] Based on any of the foregoing solutions, in one possible implementation, the LED video processing device further includes a third programmable logic controller, which is connected to the first programmable logic controller.

[0061] Exemplarily, in this solution, the function of the third programmable logic controller can be configured to be the same as that of the second programmable logic controller, and the third programmable logic controller can be connected to an additional LED display screen so that the LED video processing device includes multiple LED display screens.

[0062] Based on any of the aforementioned solutions, in one possible implementation, the LED video processing device further includes a knob, and the knob is connected to the control chip via a knob seat.

[0063] For example, in this solution, the knob can be configured to adjust the display parameters of the LED display, such as brightness, contrast, color adjustment, etc.

[0064] Based on any of the aforementioned solutions, in one possible implementation scheme, the LED video processing device further includes a WiFi chip, and the WiFi chip is connected to the control chip via a WiFi serial port module.

[0065] In this solution, the WiFi chip and the control chip are used to realize the wireless network connection between the LED video processing device and the designated device.

[0066] Based on any of the above solutions, in one possible implementation, the LED video processing device further includes an Ethernet transceiver chip, a network port transformer, and a network interface;

[0067] The Ethernet transceiver chip is connected to the second programmable logic controller, and the network interface is connected to the Ethernet transceiver chip through a network port transformer.

[0068] In this solution, the Ethernet transceiver chip, network port transformer, network interface and second programmable logic controller are used to realize the wired network connection between the LED video processing device and the designated device.

[0069] Based on any of the aforementioned solutions, in one possible implementation, the LED video processing device further includes a DVI input interface, and the DVI input interface is connected to the programmable logic controller unit via an HDMI receiver.

[0070] In this solution, the DVI (Digital Visual Interface) input interface is a digital video interface, which is an interface standard for transmitting digital video signals.

[0071] In this solution, the DVI input interface is used to connect to devices such as computer monitors and projectors to transmit image signals.

[0072] Figure 2 This is another structural block diagram of an LED video processing device in an embodiment. Figure 3 is a schematic diagram of the peripheral circuit of the video processing chip in the embodiment, refer to Figure 2 and Figure 3 Based on any of the above solutions, in one possible implementation scheme, the LED video processing device includes:

[0073] SDI interface 100, video processing chip 200, first programmable logic controller 300, control chip 400, liquid crystal (LCD) screen 500 and function keys 600;

[0074] The SDI interface 100 is connected to the video processing chip 200, and the video processing chip 200 is connected to the first programmable logic controller 300;

[0075] The control chip 400 is connected to the first programmable logic controller 300 , and the LCD 500 and the function keys 600 are connected to the control chip 400 .

[0076] It also includes a first HDMI interface 301, a first HDMI receiver 302, a second HDMI interface 303, and a second HDMI receiver 304;

[0077] The first HDMI interface 301 is connected to the first programmable logic controller 300 via the first HDMI receiver 302 , and the second HDMI interface 303 is connected to the first programmable logic controller 300 via the second HDMI receiver 304 ;

[0078] It also includes an audio input interface 308 and a WiFi mainboard 309. Either the audio input interface 308 or the WiFi mainboard 309 is connected to the first programmable logic controller 300 via a digital-to-analog conversion module 307.

[0079] It also includes an audio output interface 311, which is connected to the first programmable logic controller 300 through a digital-to-analog conversion module 310;

[0080] It also includes a second programmable logic controller 301, which is connected to the first programmable logic controller 300;

[0081] It also includes a third programmable logic controller 302, which is connected to the first programmable logic controller 300;

[0082] It also includes a knob 402, which is connected to the control chip 400 through a knob seat 401;

[0083] It also includes a WiFi chip 404, which is connected to the control chip 400 via a WiFi serial port module 403;

[0084] It also includes a first Ethernet transceiver chip 3011, a first network port transformer 3012 and a first network interface 3013;

[0085] The first Ethernet transceiver chip 3011 is connected to the second programmable logic controller 301, and the first network interface 3013 is connected to the first Ethernet transceiver chip 3011 through the first network port transformer 3012;

[0086] It also includes a second Ethernet transceiver chip 3021, a second network port transformer 3022 and a second network interface 3023;

[0087] The second Ethernet transceiver chip 3021 is connected to the third programmable logic controller 302, and the second network interface 3023 is connected to the second Ethernet transceiver chip 3021 through the second network port transformer 3022;

[0088] It also includes a DVI input interface 305, which is connected to the first programmable logic device 300 through an HDMI receiver 306;

[0089] It also includes a third network interface 407 and an RS232 chip 406, wherein the third network interface 407 is connected to the control chip 400 via the RS232 chip 406;

[0090] It also includes a serial communication module 408 , which is connected to the control chip 400 .

[0091] In this solution, the first programmable logic controller 300, the second programmable logic controller 301, and the third programmable logic controller 302 all use FPGA;

[0092] The first programmable logic controller 300 uses a model of LFE3-150EA-8FN1156C, and the second programmable logic controller 301 and the third programmable logic controller 302 use a model of LFE3-17EA-6FTN256C.

[0093] The control chip 400 adopts MCU, and the model of the control chip 400 is GD32F207VCT6;

[0094] The model of the video processing chip 200 is GV8601. The peripheral circuits of the video processing chip 200 are as follows: Figure 3 As shown;

[0095] In this solution, the SDI interface 100 is set as a standard BNC interface, and the video processing chip 200 is connected to the first programmable logic controller 300 through the GV8601_DON, GV8601_DO, GV8601_BYPASS, GV8601_CMSET, and GV8601_MUTE ports;

[0096] Among them, connected to GV8601_DON and GV8601_DO is a pair of Serdes input interfaces of the first programmable logic controller 300;

[0097] In this solution, a 75Ω impedance matching design is implemented on the BNC interface, which is consistent with the impedance of the SDI cable. A coupling capacitor is connected between the SDO pin (GV8601_DO) and the FPGA SerDes interface to filter out DC components and eliminate DC interference generated by PCB traces.

[0098] In this solution, the remaining peripheral circuit structures are the conventional configurations of GV8601, and the functions and connection relationships of each device will not be described in detail.

[0099] In this solution, the SDI interface 100 (BNC interface) is responsible for receiving the SDI video signal from the camera and the camera head. The GV8601 balances the input signal from the SDI interface 100 through the SDI interface 100, and then transmits the balanced signal to the Serdes input interface of the FPGA (first programmable logic controller 300) through the SDO output interface of the GV8601, thereby completing the SDI signal input function.

[0100] In this solution, the GV8601 is a high-speed BiCMOS chip that converts one SDI input into one SDO signal output. The BNC interface transmits the SDI input signal transmitted by the camera to the SDO output signal of the GV8601. The SDI input of the GV8601 is directly connected to the standard BNC interface, which is used to receive the standard SDI video signal source from the camera. The GV8601 then equalizes the video signal source of the SDI input channel and outputs it to the SerDes input interface of the FPGA through the SDO signal output channel. The SDO differential signal of the GV8601 is connected to a pair of SerDes input signal pins of the FPGA. SerDes is a high-speed serial interface that mainly receives the video source signal sent by the GV8601.

[0101] Based on the above structure, the LED video processing device in this solution only uses a pair of SerDes on the FPGA side to realize the SDI signal input function of the LED video processor. There is no need for video decoding and encoding processing through the TV chip. The FPGA directly performs video decoding processing. The circuit is simple and occupies very few motherboard IO resources and PCB resources.

[0102] refer to Figure 2 In this solution, the SDI interface 100, the first HDMI interface 301, the second HDMI interface 303, and the DVI input interface 305 serve as signal source input interfaces. The first programmable logic controller 300, the second programmable logic controller 301, and the third programmable logic controller 302 are used for video signal processing and image processing. Specifically, the first programmable logic controller 300 is used to process the input (video) signal of the signal source input interface, and the second programmable logic controller 301 and the third programmable logic controller 302 are used to transmit the processed video signal to the corresponding LED display screen.

[0103] The first network interface 3013 and / or the second network interface 3023 are used to connect to the LED display screen;

[0104] The digital-to-analog conversion module 307, the audio output interface 311, and the digital-to-analog conversion module 310 are used to implement digital-to-analog conversion and digital-to-analog conversion of audio signals;

[0105] The control chip 400, LCD screen 500, function button 600, knob base 401, knob 402, WiFi serial port module 403, WiFi chip 404, wireless node module 405, RS232 chip 406, third network interface 407, and UART interface 408 are used to realize human-computer interaction function.

[0106] For example, in this solution, the first programmable logic controller 300 is configured to be primarily responsible for image processing, decoding and encoding multiple signal source inputs, and then transmitting the processed (image) signals to the second programmable logic controller 301 and the third programmable logic controller 302 through its SerDes high-speed interface;

[0107] The multiple signal sources include video signals inputted from the SDI interface 100 , the first HDMI interface 301 , the second HDMI interface 303 , and the DVI input interface 305 .

[0108] In this solution, the second programmable logic controller 301 is configured to decode the video signal and distribute it to the first Ethernet transceiver chip 3011 (RTL8211) through the RGMII interface;

[0109] The first Ethernet transceiver chip 3011 then transmits the image to the receiving card on the LED display screen connected thereto through the first network interface 3013 (MDI interface Gigabit network), and the receiving card then transmits the image to the LED display screen.

[0110] In this solution, the third programmable logic controller 302 is configured to decode the video signal and distribute it to the second Ethernet transceiver chip 3021 (RTL8211) through the RGMII interface;

[0111] The second Ethernet transceiver chip 3021 then transmits the image to the receiving card on the LED display screen connected thereto through the second network interface 3023 (MDI interface Gigabit network), and the receiving card then transmits the image to the LED display screen.

[0112] For example, in this solution, the WiFi mainboard 309 specifically adopts a certain LCD commercial display mainboard, whose main functions are wireless screen projection and asynchronous program playback.

[0113] In this solution, the audio input interface 308 , the audio output interface 311 and the first programmable logic controller 300 serve as the audio digital-to-analog conversion part of the LED video processing device.

[0114] In this solution, the control chip 400 mainly serves as the central controller of the LED video processing device, which is specifically used to respond to human-computer interaction function signals such as function buttons 600, knob 402, RTC (calendar chip), and to realize the control of components such as LCD screen and WiFi.

[0115] This solution is a pure FPAG solution, which implements the video signal processing and control functions through FPGA (first programmable logic controller 300, second programmable logic controller 301, and third programmable logic controller 302). After using the pure FPGA solution, the signal source input can be switched in seconds without too much delay. In addition, there will be fewer restrictions on some functional processing such as layers, canvas size, and load range.

[0116] In this solution, the first programmable logic controller 300 , the second programmable logic controller 301 , the third programmable logic controller 302 and the control chip 400 can be configured according to design requirements to complete designated functions.

[0117] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. An LED video processing device, characterized in that: include: SDI interface, video processing chip, programmable logic controller unit, control chip, LED display and function buttons; The SDI interface is connected to the video processing chip, and the video processing chip is connected to the programmable logic controller unit; The control chip is connected to the programmable logic controller unit, the LED display screen is connected to the programmable logic controller unit, and the function keys are connected to the control chip.

2. The LED video processing device according to claim 1, wherein: It also includes at least one HDMI interface, and one of the HDMI interfaces is connected to the programmable logic controller unit via an HDMI receiver.

3. The LED video processing device according to claim 1, wherein: It also includes an audio input interface and an audio output interface; The audio input interface and the audio output interface are connected to the programmable logic controller unit via a digital-to-analog conversion module respectively.

4. The LED video processing device according to claim 3, wherein: It also includes a WiFi mainboard, which is connected to the programmable logic controller unit through a digital-to-analog conversion module.

5. The LED video processing device according to claim 1, wherein: The programmable logic controller unit includes a first programmable logic controller and a second programmable logic controller; The video processing chip and the control chip are respectively connected to the first programmable logic controller, the second programmable logic controller is connected to the first programmable logic controller, and the LED display is connected to the second programmable logic controller.

6. The LED video processing device according to claim 5, characterized in that: The system further includes a third programmable logic controller, which is connected to the first programmable logic controller.

7. The LED video processing device according to claim 1, wherein: It also includes a knob, which is connected to the control chip through a knob seat.

8. The LED video processing device according to claim 1, wherein: It also includes a WiFi chip, which is connected to the control chip through a WiFi serial port module.

9. The LED video processing device according to claim 5, wherein: It also includes Ethernet transceiver chip, network port transformer and network interface; The Ethernet transceiver chip is connected to the second programmable logic controller, and the network interface is connected to the Ethernet transceiver chip through the network port transformer.

10. The LED video processing device according to claim 1, wherein: It also includes a DVI input interface, which is connected to the programmable logic controller unit through an HDMI receiver.

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