An LED display screen based on 4K HDMI signal transmission

Abstract

The utility model provides an LED display screen based on 4K HDMI signal transmission, which relates to the field of LED display, and comprises a first box body and a second box body. A signal distribution board, a video data receiver and a video data transmission interface are installed in the inner cavity of the first box body. The signal distribution board is used to distribute video signals, and the video data receiver is used to receive video LED video data. The utility model can directly input 4K HDMI signals and can be cascaded backwards through the cooperation of the first box body, the second box body, the signal distribution board, the video data receiver, the video data transmission interface, the signal distribution fusion board card, the signal source interface, the control signal interface and the module signal interface. The video signal processing device and the LED video receiving device are integrated with each other and embedded in the screen body of the LED display screen, thereby reducing the installation difficulty of the display screen, making the video transmission line of the LED display screen simpler and more concise, and at the same time reducing the failure risk of the display screen.

Description

Technical Field

[0001] The utility model belongs to the field of LED display, in particular to an LED display screen based on 4K HDMI signal transmission. Background Art

[0002] As a video display terminal, the traditional video transmission chain of LED display screen generally adopts the method of sending card plus receiving card. The sending card is the first device for video processing. Its main function is to decode the video data and arrange it in a certain order. The device is generally placed next to the video source. The decoded video data is sent to the receiving card through the Gigabit network protocol. The receiving card is generally installed in the body of the LED display screen.

[0003] At present, the Gigabit network protocol used by LED display screens from the sending card to the receiving card is limited by bandwidth. The carrying capacity of a network cable is limited. A complete 4K picture requires more than 14 network cables to transmit. With the rise of small-pitch display screens, the resolution of LED display screens is getting larger and larger. There are more and more LED display screens with 8K, 12K and even 16K resolutions. This has led to an exponential increase in the number of network cables behind the screen. Not only has the difficulty of construction and installation increased exponentially, but the number of failure points has also increased exponentially.

[0004] In summary, the utility model provides an LED display screen based on 4K HDMI signal transmission to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A LED display screen based on 4K HDMI signal transmission comprises a first box and a second box, wherein the inner cavity of the first box is equipped with a signal distribution board, a video data receiver and a video data transmission interface, wherein the signal distribution board is used to distribute video signals, the video data receiver is used to receive video LED video data, and the video data transmission interface is used to connect the LED display screen, and the inner cavity of the second box is equipped with a signal distribution fusion board, a signal source interface, a control signal interface and a module signal interface, wherein the signal source interface, the control signal interface and the module signal interface are all installed on the surface of the signal distribution fusion board, wherein the signal distribution fusion board is used to process signal data, the signal source interface and the control signal interface both support video source signals with 4K resolution and 60HZ frame rate, the signal source interface 7 and the control signal interface 8 are both HDMI interfaces, and the signal distribution fusion board supports a maximum load of 512*640.

[0007] Furthermore, in the present invention, two groups of signal source interfaces are provided, and the signal source interfaces are video source input interfaces for receiving the video source outflow of the front-stage control card.

[0008] Furthermore, in the present invention, two groups of control signal interfaces are provided, and the control signal interfaces are output interfaces of the video source, which are used to output video data streams to the subsequent control card.

[0009] Furthermore, in the utility model, the surface of the signal distribution fusion board is also provided with two RJ45 network cable interfaces, and the internal 485 protocol signal is connected to the USB port of the control computer after conversion by the USB to 485 device for data configuration of the control card.

[0010] Furthermore, in the utility model, the module signal interface is provided with 16 groups, namely JH1 to JH16, the module signal interface adopts a double-row pin form, and the pin spacing is 2.54mm, a single row of 8pins, a total of 16pins, and the module signal interface is connected to the LED light board through a flat cable.

[0011] Furthermore, in the present invention, the module signal interface is connected to the LED light board via a flat cable, and the 16-way interfaces are independent of each other.

[0012] Beneficial effects: The utility model has the following beneficial effects:

[0013] The utility model can directly input 4K HDMI signals and can be cascaded backwards through the cooperation of the first box, the second box, the signal distribution board, the video data receiver, the video data transmission interface, the signal distribution fusion board, the signal source interface, the control signal interface and the module signal interface, so as to replace the original Gigabit network transmission solution. The video signal processing equipment and the LED video receiving device are integrated with each other and embedded in the screen body of the LED display screen, so as to reduce the installation difficulty of the display screen, make the video transmission line of the LED display screen simpler and more concise, and at the same time reduce the risk of failure of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the top view of the structure of the first box body of the utility model;

[0015] Figure 2 It is a schematic diagram of the connection state structure of the second box of the utility model, the signal distribution fusion board, the signal source interface, the control signal interface and the module signal interface;

[0016] Figure 3 It is a schematic diagram of the video signal transmission process of the utility model;

[0017] Figure 4This is a schematic diagram of interface signal definition of the utility model.

[0018] In the figure:

[0019] 1. First box; 2. Second box; 3. Signal distribution board; 4. Video data receiver; 5. Video data transmission interface; 6. Signal distribution fusion board; 7. Signal source interface; 8. Control signal interface; 9. Module signal interface. DETAILED DESCRIPTION

[0020] In order to better understand the technical content of the utility model, specific embodiments are cited and described as follows in conjunction with the accompanying drawings. In this disclosure, various aspects of the utility model are described with reference to the accompanying drawings, and many illustrative embodiments are shown in the accompanying drawings. The embodiments of the present disclosure are not necessarily defined to include all aspects of the utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the utility model are not limited to any implementation method. In addition, some aspects disclosed in the utility model can be used alone, or used in any appropriate combination with other aspects disclosed in the utility model.

[0021] Example 1

[0022] like Figure 1-4 As shown, it is the first embodiment of the utility model, which provides an LED display screen based on 4K HDMI signal transmission, including a first box body 1 and a second box body 2. The inner cavity of the first box body 1 is equipped with a signal distribution board 3, a video data receiver 4 and a video data transmission interface 5. The signal distribution board 3 is used to distribute video signals, the video data receiver 4 is used to receive video LED video data, and the video data transmission interface 5 is used to connect the LED display screen. The inner cavity of the second box body 2 is equipped with a signal distribution fusion board 6, a signal source interface 7, a control signal interface 8 and a module signal interface 9. The signal source interface 7, the control signal interface 8 and the module signal interface 9 are all installed on the surface of the signal distribution fusion board 6. The signal distribution fusion board 6 is used to process signal data. The signal source interface 7 and the control signal interface 8 both support video source signals with 4K resolution and 60HZ frame rate. The signal source interface 7 and the control signal interface 8 are both HDMI interfaces. The signal distribution fusion board 6 supports a maximum load of 512*640.

[0023] like Figure 1-4As shown, the signal distribution board 3, the video data receiver 4, the video data transmission interface 5, the signal distribution fusion board 6, the signal source interface 7, the control signal interface 8 and the module signal interface 9 are integrated and embedded into the screen body of the LED display. The functions of the sending card and the receiving card are integrated and completed by one card, which is built into the screen body of the LED display. The single card can complete the video decoding function, and can convert the decoded data into a gamma curve, and extend the 8-bit R / G / B data to 16-bit data suitable for the LED display. Each cabinet unit of the LED display has 2 HDMI interfaces, one of which is used as an input channel to support custom resolution in the 4K@60HZ signal, and the other is used as an output channel to support 4K@60HZ signal cascading. Each HDMI interface can support a video signal source with a resolution of 4K. The cabinets are directly cascaded through an HDMI data cable, so that a 4K HDMI signal can be directly input and can be cascaded backwards, thereby replacing the original Gigabit network transmission solution, reducing the installation difficulty of the display, making the video transmission line of the LED display simpler and more concise, and reducing the risk of display failure.

[0024] Example 2

[0025] Reference Figure 1-4 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0026] In this embodiment, two groups of signal source interfaces 7 are provided. The signal source interfaces 7 are video source input interfaces for receiving the video source outflow of the front-stage control card.

[0027] There are two groups of control signal interfaces 8. The control signal interfaces 8 are output interfaces of the video source and are used to output video data streams to the subsequent control card.

[0028] The surface of the signal distribution fusion board 6 is also provided with two RJ45 network cable interfaces, and the internal 485 protocol signal is converted by the USB to 485 device and connected to the USB port of the control computer for data configuration of the control card.

[0029] The module signal interface 9 is provided with 16 groups, namely JH1 to JH16. The module signal interface 9 adopts a double-row pin form, and the pin spacing is 2.54mm, a single row of 8 pins, a total of 16 pins, and the module signal interface 9 is connected to the LED light board through a flat cable.

[0030] The module signal interface 9 is connected to the LED light board through a flat cable, and the 16-way interfaces are independent of each other.

[0031] like Figure 1-4As shown, the signal source interface 7 is HDMI input and supports custom resolution in 4K@60HZ signal, and the control signal interface 8 is HDMI output, which supports 4K@60HZ signal cascading and fine grayscale function. Each grayscale can be calibrated step by step to optimize color jump, color cast and pitting problems. The LED display screen has light board correction data management, and the correction data is stored in the light board in order. When the light board is damaged and needs to be repaired and replaced, the display screen will automatically read back the data in the light board to ensure consistent color display. The LED display screen has a built-in one-key dehumidification function. When the LED display screen is not used for a long time, the dehumidification function is activated through software operation. At this time, the LED display screen will slowly increase the brightness, so that the temperature of the display screen slowly increases, thereby slowly evaporating the moisture in the screen body to prevent the display screen from being damaged due to excessive temperature rise and the moisture cannot be discharged in time. The standard color gamut or custom color gamut can be adjusted according to demand, and the original 16-bit color rendering capability can be increased to more than 18 bits, so as to achieve grayscale improvement. It also has brightness and chromaticity correction functions, real-time communication status detection function and temperature and voltage detection functions.

[0032] When in use, the functions of the sending card and the receiving card are integrated to achieve transmission by one card, which is built into the screen of the LED display. A single card can complete the video decoding function, and can perform gamma curve conversion on the decoded data, and extend the 8-bit R / G / B data to 16-bit data suitable for the LED display. Each cabinet unit of the LED display has 2 HDMI interfaces, one of which is used as an input channel to support custom resolution within the 4K@60HZ signal, and the other is used as an output channel to support 4K@60HZ signal cascading. Each HDMI interface can support a 4K resolution video signal source, and the cabinets are directly cascaded through the HDMI data cable, so that 4K HDMI signals can be directly input and can be cascaded backwards, thereby replacing the original Gigabit network transmission solution, reducing the difficulty of installing the display, making the video transmission line of the LED display simpler and more concise, and at the same time reducing the risk of display failure.

[0033] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in the field. This application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.

[0034] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. An LED display screen based on 4K HDMI signal transmission, comprising a first box (1) and a second box (2), characterized in that: The inner cavity of the first box (1) is installed with a signal distribution board (3), a video data receiver (4) and a video data transmission interface (5), wherein the signal distribution board (3) is used to distribute video signals, the video data receiver (4) is used to receive video LED video data, and the video data transmission interface (5) is used to connect the LED display screen; the inner cavity of the second box (2) is installed with a signal distribution fusion board (6), a signal source interface (7), a control signal interface (8) and a module signal interface (9), wherein the signal source interface (7), the control signal interface (8) and the module signal interface (9) are all installed on the surface of the signal distribution fusion board (6), wherein the signal distribution fusion board (6) is used to process signal data, the signal source interface (7) and the control signal interface (8) both support video source signals with a resolution of 4K and a frame rate of 60 Hz, and the signal source interface (7) and the control signal interface (8) are both HDMI interfaces.

2. The LED display screen based on 4K HDMI signal transmission as claimed in claim 1, characterized in that: The signal source interface (7) is provided with two groups. The signal source interface (7) is a video source input interface, which is used to receive the video source outflow of the front-stage control card.

3. The LED display screen based on 4K HDMI signal transmission as claimed in claim 1, characterized in that: The control signal interface (8) is provided with two groups. The control signal interface (8) is an output interface of a video source, and is used to output a video data stream to a subsequent control card.

4. The LED display screen based on 4K HDMI signal transmission as claimed in claim 1, characterized in that: The surface of the signal distribution fusion board (6) is also provided with two RJ45 network cable interfaces, and the internal 485 protocol signals are converted by a USB to 485 device and connected to the USB port of the control computer for data configuration of the control card.

5. The LED display screen based on 4K HDMI signal transmission as claimed in claim 1, characterized in that: The module signal interface (9) is provided with 16 groups, namely JH1 to JH16. The module signal interface (9) adopts a double-row pin form, and the pin spacing is 2.54mm, a single row of 8 pins, a total of 16 pins, and the module signal interface (9) is connected to the LED light board through a flat cable.

6. The LED display screen based on 4K HDMI signal transmission as claimed in claim 1, characterized in that: The module signal interface (9) is connected to the LED light board via a flat cable, and the 16-way interfaces are independent of each other.

7. The LED display screen based on 4K HDMI signal transmission as claimed in claim 1, characterized in that: The signal distribution fusion board (6) supports a maximum load of 512*640.

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