Intelligent display mainboard capable of displaying four screens together

Abstract

The utility model provides a four-screen common display intelligent display mainboard, which comprises a host circuit board and a display screen interface, and is characterized in that the host circuit board comprises an HDMI (High Definition Multimedia Interface) video signal output end and an MIPI (Mobile Industry Processor Interface) video signal output end; vBO video signals of the host circuit board are connected with the VBO interface through the HDMI-VBO conversion circuit, and LVDS video signals of the host circuit board are connected with the LVDS interface through the MIPI-LVDS conversion circuit. According to the utility model, mainstream LVDS, MIPI, HDMI and VBO display interfaces can be supported at the same time only through a single main board, the interface type of the display screen is outputted through corresponding conversion circuits according to two types of signals of MIPI and HDMI, and the interface type of the display screen has the advantages of simple assembly and low assembly cost. And through the function of supporting multiple interfaces, the adaptive capacity of the multi-screen display equipment carrying the mainboard can be improved, so that different requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of display mainboards, and in particular to a smart display mainboard for co-displaying four screens. Background Art

[0002] Commercial display devices have been popularized in every field of people's lives, such as elevators, bus stations and subway platforms. They can be seen everywhere and have great advertising value. Commercial display devices are mainly composed of host circuit boards (referred to as motherboards) and display screens. There are many mainstream display screen interfaces, such as LVDS, MIPI, HDMI, and VBO.

[0003] Currently, the display interfaces of commercial display motherboards on the market are relatively simple and can only support one or two display interfaces. If you want to support displays with other interfaces, you need to add an additional adapter board, which will not only increase the cost but also increase the difficulty of assembly.

[0004] Therefore, it is necessary to improve existing commercial display equipment. Utility Model Content

[0005] In view of this, it is necessary to provide a smart display motherboard with four screens co-displaying and multiple display interfaces to solve the problems existing in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned object, the utility model provides a four-screen co-display smart display motherboard, including: a host circuit board and a display screen interface, the host circuit board includes an HDMI video signal output terminal and a MIPI video signal output terminal, and the display screen interface includes an LVDS interface, a MIPI interface, an HDMI interface and a VBO interface;

[0007] The VBO video signal of the host circuit board is connected to the VBO interface via an HDMI-VBO conversion circuit, and the LVDS video signal of the host circuit board is connected to the LVDS interface via a MIPI-LVDS conversion circuit.

[0008] In some possible implementations, the MIPI video signal of the host circuit board is directly connected to the MIPI interface, and the HDMI video signal of the host circuit board is directly connected to the HDMI interface.

[0009] In some possible implementations, a power management module is further included, and the power management module is used to provide power to each unit circuit on the host circuit board.

[0010] Some possible implementations also include a system processing circuit, which includes a microprocessor, a memory, a storage chip, and a crystal oscillator.

[0011] In some possible implementations, an RJ45 network port is also included, and the RJ45 network port is connected to the network port access end of the host circuit board through the Ethernet Gigabit PHY.

[0012] In some possible implementations, a USB-OTG is also included, and the USB-OTG is connected to the host circuit board via a USB interface.

[0013] In some possible implementations, SPI communication is also included, and the SPI communication connects the host circuit board and the power management module for communication.

[0014] In some possible implementations, DEBUG is also included, and the DEBUG is used for fault detection of the host circuit board.

[0015] In some possible implementations, a UBOOT is further included, and the UBOOT is connected to a host circuit board.

[0016] In some possible implementations, a microphone, an earphone output, an amplifier chip, a PWRKEY and a DC-IN are also included, and the microphone, the earphone output, the amplifier chip, the PWRKEY and the DC-IN are all connected to the power management module.

[0017] The beneficial effects of adopting the above implementation are:

[0018] The utility model can simultaneously support mainstream LVDS, MIPI, HDMI, and VBO display interfaces through a single motherboard, and has strong adaptability. The two types of signals, MIPI and HDMI, are output to the interface types of the display screen through corresponding conversion circuits, and the cost and labor of adding adapter boards are avoided, and the assembly is simple and the assembly cost is low. Moreover, by supporting the function of multiple interfaces, the adaptability of multi-screen display devices equipped with this motherboard can be improved, thereby meeting different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A circuit diagram of an embodiment of a smart display mainboard with four screens co-displaying provided by the utility model;

[0021] Figure 2 A circuit diagram of another embodiment of the four-screen co-display smart display motherboard provided by the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0023] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0024] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] The utility model provides a four-screen co-display smart display mainboard and device, which are described below respectively.

[0026] In the embodiment of the present utility model, a four-screen co-display smart display motherboard is provided. Please refer to Figure 1 , Figure 1 A circuit diagram of an embodiment of a smart display motherboard with four co-display screens provided by the utility model. The smart display motherboard with four co-display screens comprises: a host circuit board 100 and a display screen interface, wherein the host circuit board 100 comprises an HDMI video signal output terminal (i.e., HDMI1 and HDMI2) and a MIPI video signal output terminal (i.e., MIPI1 and MIPI2), and the display screen interface comprises an LVDS interface 12 (i.e., LVDS interface 2), a MIPI interface 11 (i.e., MIPI interface 1), an HDMI interface 13 (i.e., HDMI interface 3) and a VBO interface 14 (i.e., VBO interface 4).

[0027] The VBO video signal of the host circuit board 100 is connected to the VBO interface 14 via the HDMI-VBO conversion circuit 16, and the LVDS video signal of the host circuit board 100 is connected to the LVDS interface 13 via the MIPI-LVDS conversion circuit 15. Specifically, the HDMI-VBO conversion circuit uses the LT8668SX conversion chip, and the MIPI-LVDS conversion circuit uses the GM8775C conversion chip, thereby realizing a multi-interface display screen connection solution through the conversion circuit.

[0028] In some possible implementations, the MIPI video signal of the host circuit board 100 is directly connected to the MIPI interface 11 , and the HDMI video signal of the host circuit board 100 is directly connected to the HDMI interface 13 .

[0029] In a specific implementation scheme, the four-screen co-display smart display motherboard provided by the utility model can simultaneously support mainstream LVDS, MIPI, HDMI, and VBO display interfaces through a single motherboard, and has extremely strong adaptability. The two major types of signals, MIPI and HDMI, are output through the corresponding conversion circuits to output the interface types of the display screen. The utility model also avoids the cost and labor of increasing the adapter board, and has the advantages of simple assembly and low assembly cost. This kind of smart display motherboard, by supporting the function of multiple interfaces, can improve the adaptability of multi-screen display devices equipped with this motherboard, thereby meeting different needs.

[0030] Please refer to Figure 2 , Figure 2 Another circuit structure diagram of an embodiment of the four-screen co-display smart display motherboard provided by the utility model. In some possible implementations, the four-screen co-display smart display motherboard also includes a power management module (i.e., PMIC power supply 24 and PWRKEY29), and the power management module is used to provide power to each unit circuit on the host circuit board. Specifically, the four-screen co-display smart display motherboard provides circuits through a power management module composed of a PMIC integrated circuit and an interface adapter.

[0031] Some possible implementations also include a system processing circuit, which includes a microprocessor 200, a memory 21 (i.e., LPDDR4), a storage chip 20 (i.e., EMMC), and a crystal oscillator (not shown). Specifically, the system processing circuit is responsible for data processing of the entire host circuit board, including digital analog audio signals and transceiver digital signals.

[0032] In some possible implementations, an RJ45 network port 18 is also included, and the RJ45 network port 18 is connected to the network port access end of the host circuit board 100 through the Ethernet Gigabit PHY 17.

[0033] In some possible implementations, a USB-OTG 19 is further included, and the USB-OTG 19 is connected to the host circuit board 100 via a USB interface.

[0034] In some possible implementations, SPI communication 22 is further included, and the SPI communication 22 connects the host circuit board 100 and the power management module 24 for communication.

[0035] In some possible implementations, DEBUG 30 is further included, and DEBUG 30 is used for fault detection of the host circuit board 100 .

[0036] In some possible implementations, a UBOOT31 is further included, and the UBOOT31 is connected to the host circuit board 100 .

[0037] In some possible implementations, a microphone 25, an earphone output 26, an amplifier chip 27, a PWRKEY 29, and a DC-IN 23 are further included, and the microphone 25, the earphone output 26, the amplifier chip 27, the PWRKEY 29, and the DC-IN 23 are all connected to the power management module 24. Generally, a speaker 28 is also included, and the speaker 28 is connected to the amplifier chip 27.

[0038] In some embodiments, the four-screen co-display smart display motherboard provided by the utility model provides circuits through a power management module 24 composed of a PMIC integrated circuit and an interface adapter, and the microprocessor is responsible for outputting dual-channel HDMI and MIPI signals to the external interface, wherein each HDMI and MIPI signal is then converted to an LVDS and VBO display interface through a conversion chip. That is, the four-screen co-display smart display motherboard can support the simultaneous display of mainstream LVDS, MIPI, HDMI, and VBO display interfaces through a single motherboard, has extremely strong adaptability, avoids the cost and labor of increasing the adapter board, and has the advantages of simple assembly and low assembly cost.

[0039] The four-screen co-display smart display motherboard provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the four-screen co-display smart display motherboard of the present invention; at the same time, for technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A four-screen co-display smart display motherboard, characterized in that: include: A host circuit board and a display screen interface, wherein the host circuit board includes an HDMI video signal output terminal and a MIPI video signal output terminal, and the display screen interface includes an LVDS interface, a MIPI interface, an HDMI interface, and a VBO interface; The VBO video signal of the host circuit board is connected to the VBO interface via an HDMI-VBO conversion circuit, and the LVDS video signal of the host circuit board is connected to the LVDS interface via a MIPI-LVDS conversion circuit.

2. The four-screen co-display smart display motherboard according to claim 1, characterized in that: The MIPI video signal of the host circuit board is directly connected to the MIPI interface, and the HDMI video signal of the host circuit board is directly connected to the HDMI interface.

3. The four-screen co-display smart display motherboard according to claim 1, characterized in that: It also includes a power management module, which is used to provide power to each unit circuit on the host circuit board.

4. The four-screen co-display smart display motherboard according to claim 1, characterized in that: It also includes a system processing circuit, which includes a microprocessor, a memory, a storage chip and a crystal oscillator.

5. The four-screen co-display smart display motherboard according to claim 1, characterized in that: It also includes an RJ45 network port, which is connected to the network port access end of the host circuit board through the Ethernet Gigabit PHY.

6. The four-screen co-display smart display motherboard according to claim 1, characterized in that: It also includes a USB-OTG, and the USB-OTG is connected to the host circuit board through a USB interface.

7. The four-screen co-display smart display motherboard according to claim 3, characterized in that: It also includes SPI communication, and the SPI communication connects the host circuit board with the power management module for communication.

8. The four-screen co-display smart display motherboard according to claim 1, characterized in that: It also includes DEBUG, which is used for fault detection of the host circuit board.

9. The four-screen co-display smart display motherboard according to claim 1, characterized in that: The system also includes a UBOOT, which is connected to the host circuit board.

10. The four-screen co-display smart display motherboard according to claim 3, characterized in that: It also includes a microphone, an earphone output, an amplifier chip, PWRKEY and a DC-IN, and the microphone, the earphone output, the amplifier chip, PWRKEY and the DC-IN are all connected to the power management module.

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