WO2020041938A1

WO2020041938A1 - Display control system

Info

Publication number: WO2020041938A1
Application number: PCT/CN2018/102532
Authority: WO
Inventors: 宗靖国; 韦桂锋; 刘欢
Original assignee: 西安诺瓦电子科技有限公司
Priority date: 2018-08-27
Filing date: 2018-08-27
Publication date: 2020-03-05

Abstract

Disclosed is a display control system (1), which is used for carrying a first display screen (301) and a second display screen (302). The display control system (1) comprises: a display screen controller (10), comprising a video interface (101), a first optical fibre interface (102), a first network port (103) and a signal copying unit (104), wherein the video interface (101) is connected to the signal copying unit (104), and the signal copying unit (104) is further connected to the first optical fibre interface (102) and the first network port (103); and a signal converter (20), comprising a second optical fibre interface (201), a signal conversion unit (203) and a second network port (202), wherein the signal conversion unit (203) is connected to the second optical fibre interface (201) and the second network port (202). The first optical fibre interface (102) is connected to the second optical fibre interface (201) by means of a cable. The first network port (103) is used for connecting to the first display screen (301). The second network port (202) is used for connecting to the second display screen (302). The video interface (101) is used for connecting to an external video source so as to receive video data. The signal copying unit (104) is used for processing the received video data and then obtaining a first Ethernet data signal and an optical fibre data signal, and transmitting the first Ethernet data signal to the first display screen (301) by means of the first network port (103).

Description

Display control system

Technical field

The present application relates to the field of display technology, and in particular, to a display control system.

Background technique

At present, the demand for synchronous large-load control systems is increasing, and more and more accurate. In addition, there are more and more application scenarios where multiple displays display the same picture, and the synchronization of pictures is a big challenge. Furthermore, when the distance between the two display screens is relatively long, there is a limit to the carrying capacity of the network cable. In the current LED display control system, the conventional solution for the synchronous control system to synchronize large-band long-distance transmission is to use two display controllers to carry a display through a network cable, such as a 4K large-data display. The same screen, that is, two display controllers with the same configuration are connected to the same video input source, and the same screen is displayed on the two display screens, and the two display controllers need to be controlled by two computers respectively. This solution has obvious disadvantages, such as the need for two computers to control, the cost is higher, and the large screen with a large distance between the display screen is difficult to control the synchronization of the screen synchronization, manual operation is difficult to do To the high-precision picture synchronization display, it is inevitable that the picture is not synchronized, which brings poor user experience.

Summary of the Invention

In view of the above problems, an embodiment of the present application provides a display control system to achieve synchronous display of two display screens with long distance and large load.

In one aspect, an embodiment of the present application provides a display control system for carrying a first display screen and a second display screen. The display control system includes a display controller including a video interface, a first optical fiber interface, A first network port and a signal replication unit, the video interface is connected to the signal replication unit, and the signal replication unit is further connected to the first fiber interface and the first network port; the signal converter includes a second fiber interface A signal conversion unit and a second network port, wherein the signal conversion unit is connected to the second fiber interface and the second network port; wherein the first fiber interface is connected to the second fiber interface through a cable; The first network port is used to connect the first display screen; the second network port is used to connect the second display screen; the video interface is used to connect an external video source to receive video data; the signal is copied The unit is configured to process the received video data to obtain a first Ethernet data signal and an optical fiber data signal, and transmit the first Ethernet data signal to the first network port through The first display screen, and outputting the optical fiber data signal to the second optical fiber interface through the first optical fiber interface; the signal conversion unit is configured to convert the optical fiber obtained from the second optical fiber interface The data signal is format converted to generate a second Ethernet data signal, and the second Ethernet data signal is output to the second display screen through the second network port.

On the other hand, an embodiment of the present application further provides a display control system, including: a display screen controller including a video interface, a first interface, a second interface, and a signal copy unit; a signal converter including a third interface, a signal A conversion unit and a fourth interface; wherein the first interface is connected to the third interface through a cable, and the signal duplication unit is configured to perform copy distribution processing on the video data input from the video interface to obtain a first data signal And a second data signal, outputting the first data signal through the second interface, and outputting the second data signal to the third interface through the first interface; the signal conversion unit also uses Performing format conversion on the second data signal obtained from the third interface to generate a third data signal, and outputting the third data signal through the fourth interface.

In an embodiment of the present application, the first interface and the third interface are optical fiber interfaces, and the first interface is connected to the third interface through an optical fiber.

In an embodiment of the present application, the display controller includes a video decoding circuit, a first main control circuit, a first driving circuit, and a second driving circuit; the video decoding circuit, the first driving circuit, and all The second driving circuit is connected to the first main control circuit, the video interface is connected to the video decoding circuit, the first interface is connected to the first driving circuit, and the second interface is connected to the second driving circuit. Circuit, the signal replication unit is included in the first main control circuit.

In an embodiment of the present application, the first main control circuit includes a first microcontroller and a first programmable logic device, the first microcontroller is connected to the first programmable logic device, and the video A decoding circuit, the first driving circuit and the second driving circuit are respectively connected to the first programmable logic device, and the signal copying unit is built in the first programmable logic device.

In an embodiment of the present application, the second interface is a network port, the second driving circuit includes an Ethernet physical layer transceiver, and the network port is connected to the signal replication through the Ethernet physical layer transceiver. unit.

In an embodiment of the present application, there are multiple network ports, the second driving circuit includes multiple Ethernet physical layer transceivers, and the multiple network ports receive and transmit through the multiple Ethernet physical layer, respectively. A device is connected to the signal replication unit.

In an embodiment of the present application, the signal converter includes a second main control circuit, a third driving circuit, and a fourth driving circuit; the third driving circuit and the fourth driving circuit are respectively connected to the second A main control circuit, the third interface is connected to the third driving circuit, the fourth interface is connected to the fourth driving circuit, and the signal conversion unit is included in the second main control circuit.

In an embodiment of the present application, the second main control circuit includes a second programmable logic device and a second microcontroller connected to the programmable logic device, and the third driving circuit is connected to the third Between the interface and the second programmable logic device, the fourth driving circuit is connected between the fourth interface and the second programmable logic device, and the signal conversion unit is built in the second Programming logic devices.

In an embodiment of the present application, the fourth interface is a network port, the fourth driving circuit includes an Ethernet physical layer transceiver, and the network port is connected to the signal conversion through the Ethernet physical layer transceiver. unit.

In an embodiment of the present application, there are multiple network ports, the fourth driving circuit includes multiple Ethernet physical layer transceivers, and the multiple network ports receive and transmit through the multiple Ethernet physical layer respectively. A device is connected to the signal conversion unit.

In an embodiment of the present application, the signal converter is a photoelectric converter, the third driving circuit includes an optical module, and the optical module is connected between the third interface and the signal conversion unit.

In an embodiment of the present application, the display screen controller further includes a communication interface, and the communication interface is used for the display screen controller to communicate with an external device.

In an embodiment of the present application, the communication interface is a network port, a USB interface, or a serial port.

In another aspect, an embodiment of the present application further provides a display control system, including a display screen controller including a video interface, a video decoding circuit, a first main control circuit, a first interface, a first driving circuit, a second interface, and A second driving circuit, the video decoding circuit, the first driving circuit, and the second driving circuit are respectively connected to the first main control circuit, the video interface is connected to the video decoding circuit, and the first interface The first drive circuit is connected, and the second interface is connected to the second drive circuit; the signal converter includes a second main control circuit, a third interface, a third drive circuit, a fourth interface, and a fourth drive circuit, The third driving circuit and the fourth driving circuit are respectively connected to the second main control circuit, the third interface is connected to the third driving circuit, and the fourth interface is connected to the fourth driving circuit; The first interface is connected to the third interface; the video decoding circuit is configured to decode the video data obtained by the video interface and transmit the video data to the first main control circuit; the first main control A circuit for copying and distributing the decoded video data to obtain a first data signal and a second data signal; outputting the first data signal through the second driving circuit and the second interface; and The second data signal is output to the third interface through the first driving circuit and the first interface; the second main control circuit converts the second data signal obtained from the third interface A third data signal is outputted through the fourth driving circuit and the fourth interface.

One technical solution of the above technical solution has the following advantages or beneficial effects: through the design of the display screen controller and the signal converter, it can simultaneously carry two display screens with a long distance at the same time and make the two display screens simultaneously display the same Content to reduce costs for users and bring users a perfect visual experience.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions of the embodiments of the present application more clearly, the drawings used in the description of the embodiments are briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can obtain other drawings according to the drawings without paying creative labor.

FIG. 1 is a schematic structural diagram of a display control system according to an embodiment of the present application; FIG.

2 is a schematic structural diagram of a display control system according to another embodiment of the present application;

3 is a schematic structural diagram of a display controller shown in FIG. 2;

4 is a schematic diagram of another structure of the display controller shown in FIG. 2;

FIG. 5 is another schematic structural diagram of the display controller shown in FIG. 2; FIG.

6 is a schematic structural diagram of the signal converter shown in FIG. 2;

7 is a schematic diagram of another structure of the signal converter shown in FIG. 2;

FIG. 8 is another schematic structural diagram of the signal converter shown in FIG. 2.

detailed description

In the following, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

Please refer to FIG. 1, which is a schematic structural diagram of a display control system according to an embodiment of the present application. As shown in FIG. 1, the display control system 1 is configured to carry two display screens 301 and 302 and make the two display screens simultaneously display the same content. The display screens 301 and 302 here are, for example, LED display screens, which are typically formed by splicing a plurality of LED boxes configured with receiving cards (or scanning cards). The LED cabinet typically includes self-emitting LED elements, and one or more LED elements of different colors constitute a display pixel.

Specifically, the display control system 1 includes a display controller 10 and a signal converter 20.

The display screen controller 10 includes a video interface 101, a first optical fiber interface 102, a first network port 103, and a signal copying unit 104. The video interface 101 is connected to the signal duplication unit 104. The signal replication unit 104 is connected to the first optical fiber interface 102 and the first network port 103, and is implemented by, for example, a programmable logic device such as an FPGA chip such as an XC7K325TFFG900-2 chip. The first optical fiber interface 102 may be, for example, an interface such as SC, ST, or LC. The first network port 103 may be, for example, an RJ45 interface or another structural interface. The first network port 103 is connected to the display screen 301 through a network cable.

The signal converter 20 includes a second optical fiber interface 201, a signal conversion unit 203, and a second network port 202. The signal conversion unit 203 is connected to the second optical fiber interface 201 and the second network port 202, and it is implemented by, for example, a programmable logic device such as an FPGA chip such as an XC7K160TFFG676-2 chip. The second optical fiber interface 201 is connected to the first optical fiber interface 102 of the display controller 10 through a cable, such as an optical fiber. The second optical fiber interface 201 may be, for example, an interface such as SC, ST, or LC. The second network port 202 may be, for example, an RJ45 interface or another structural interface. The second network port 202 is connected to the display screen 302 through a network cable. It is worth mentioning here that, as can be seen from FIG. 1, compared to the display controller 10, the signal converter 20 is not provided with a standard video interface such as a DVI interface, an HDMI interface, or a DP interface.

The video interface 101 is used to connect an external video source to receive video data. The external video source here may be a video source end of a device such as a PC or a video processor. In this embodiment, the number of the video interfaces 101 may be one or more, and the video interfaces 101 are, for example, digital video interfaces, analog video interfaces, or a combination thereof. For example, the video interface 101 includes, for example, an HDMI interface, a DP interface, and / or a dual-link DVI interface.

The signal duplication unit 104 processes the video data obtained from the external video source, for example, performs data duplication and distribution to obtain a first Ethernet data signal and an optical fiber data signal, which is implemented by, for example, a programmable logic device such as an FPGA chip. In addition, the signal replication unit 104 transmits the first Ethernet data signal to the display screen 301 for display through the first network port 103. At the same time, the signal replication unit 104 outputs the optical fiber data signal to the second optical fiber interface 201 of the signal converter 20 through the first optical fiber interface 102.

The signal conversion unit 203 performs format conversion on the optical fiber data signal obtained from the second optical fiber interface 201 to generate a second Ethernet data signal. In addition, the signal conversion unit 203 outputs the second Ethernet data signal to the display screen 302 through the second network port 202 for display. Here, since the first Ethernet data signal and the second Ethernet data signal are the same data signal, the contents displayed on the display screen 301 and the display screen 302 are the same.

In summary, in the embodiment of the present application, a display controller provided with a signal duplication unit and a signal converter provided with a signal conversion unit are used to implement different screens to display the same screen. In addition, the display controller and signal The optical fiber connection between the converters. Due to the fast speed and large bandwidth of the optical fiber communication, the large-capacity (or large data transmission) function of the display screen is realized and the synchronization of the display contents of the two display screens is improved. The transmission distance of communication is as long as 10 kilometers, so that different displays on long distances can display the same picture, giving the user a perfect visual experience, while simplifying the synchronous control operation and facilitating maintenance and management. In addition, compared with the current display screen control system, the display screen control system provided in the embodiment of the present application only needs to use one display controller to realize synchronous display of the two display screens, which is cost-effective and saves costs for users.

Please refer to FIG. 2, which is a schematic structural diagram of a display control system according to another embodiment of the present application. The display control system can carry two displays such as LED displays. As shown in FIG. 2, the display control system 5 includes a display controller 50 and a signal converter 60.

The display controller 50 includes a video interface 501, a first interface 502, a second interface 503, and a signal copying unit 504. The video interface 501 is connected to the signal copying unit 504. The signal replication unit 504 is connected to the first interface 502 and the second interface 503, which is implemented by, for example, a programmable logic device such as an FPGA chip.

The signal converter 60 includes a third interface 601, a signal conversion unit 603, and a fourth interface 602. The signal conversion unit 603 is connected to the third interface 601 and the fourth interface 602, which is implemented by, for example, a programmable logic device such as an FPGA chip. The third interface 601 is connected to the first interface 502 of the display controller 50. It is worth mentioning here that, as can be seen from FIG. 2, compared to the display controller 50, the signal converter 60 is not provided with a standard video interface such as a DVI interface, an HDMI interface, or a DP interface.

The signal duplication unit 504 processes the video data acquired from the external video source, for example, performs data duplication and distribution to obtain a first data signal and a second data signal. In addition, the signal copying unit 504 outputs the first data signal for display through the second interface 503, and the signal copying unit 504 outputs the second data signal to the third interface 601 of the signal converter 60 through the first interface 502. . The signal conversion unit 603 converts the second data signal obtained from the third interface 601 into a third data signal, and then outputs the third data signal through the fourth interface 602 for display. Here, the first data signal and the third Ethernet data signal are the same data signal, such as an Ethernet data signal or an optical fiber data signal, that is, the two display screens carried by the display control system 5 display the same content. .

The first interface 502 and the third interface 601 are interfaces of the same type, for example, optical fiber interfaces such as SC, ST, and LC. The first interface 502 is connected to the third interface 601 through a cable such as an optical fiber. Because the optical fiber interface, such as 10G optical fiber communication, has the characteristics of fast communication speed and large communication bandwidth, the large load capacity of the display screen is realized, and the synchronization of the display contents of the two display screens is guaranteed. In addition, because the transmission distance of optical fiber communication is long, for example, 10 kilometers, it satisfies the requirement that different displays on the long distance display the same picture, giving users a perfect visual experience. Of course, the first interface 502 and the third interface 601 may also perform data transmission for other types of interfaces, such as a network interface such as an RJ45 interface.

Specifically, referring to FIG. 3, the display controller 50 includes, for example, a first main control circuit 510, a communication interface 508, a video interface 501, a video decoding circuit 505, a first driving circuit 506, a first interface 502, and a second driving circuit. 507 and the second interface 503.

The video interface 501 is used to connect an external video source to receive video data. The external video source can be the video source of a device such as a PC or a video processor. In this embodiment, the number of the video interfaces 501 may be one or multiple, and the video interfaces 501 are, for example, digital video interfaces, analog video interfaces, or a combination thereof. For example, the video interface 501 includes, for example, an HDMI interface, a DP interface, and / or a dual-link DVI interface.

The video decoding circuit 505 is connected between the video interface 501 and the first main control circuit 510. It is usually provided with a video decoding chip, and the set video decoding chip is related to the type of the video interface 501. For example, when the video interface 501 is a DVI interface, the video decoding chip is a DVI video decoding chip such as an ADV7612 chip; when the video interface 501 is a DP interface, the video decoding chip is a DP video decoding chip; when the video interface 501 is an HDMI interface, the video is The decoding chip uses an HDMI video decoding chip.

As shown in FIG. 4, the first main control circuit 510 includes, for example, an MCU of a first programmable logic device 512 and a first microcontroller 511 such as an STM32F207 chip connected to the first programmable logic device 512. More specifically, the first programmable logic device 512 is, for example, an FPGA, and the first microcontroller 511 is, for example, a controller for loading and configuring the FPGA, and the display controller 50 communicates with an external device, for example, the first microcontroller 511 can interact with external devices through a communication interface 508, such as a 100M Ethernet port, a serial port, a USB interface, or a human-machine interaction device, such as a button, a knob, etc., to control the display controller 50. Typically, after the video decoding circuit 505 decodes the input video data obtained from the video interface 501, it transmits the decoded data and control signals to the first programmable logic device 512 and the first programmable logic device of the main control circuit 510. 512 performs buffering through an internal or external RAM, and performs a replacement clock domain and bit width conversion operation, and then copies and distributes the processed data for output through a signal copying unit 504 built in the first programmable logic device 512. For example, the internal logic of the first programmable logic device 512 may include a data input module, a dual-port RAM and its control module, a 24-bit to 8-bit module, and a data output module. , Enable, and field synchronization signals) are allocated to the back-end dual-port RAM and its control module, and control the synchronization of the entire system. The dual-port RAM control module controls the read and write operations of the RAM, especially for the start of writing and the stop of writing. , Start reading, reading and stopping the four states of control; the data output from the dual-port RAM is transmitted to the data output module after parallel-serial conversion, and the data output module packs and outputs the received data according to a certain format, such as packaging The optical fiber data signal is output through the first driving circuit 506 and the first interface 502, or the Ethernet data signal is packetized and output through the second driving circuit 507 and the second interface 503.

As shown in FIG. 5, the first driving circuit 506 is connected between the first programmable logic device 512 and the first interface 502 of the first main control circuit 510. In this embodiment, as shown in FIG. 5, the first interface 502 may be, for example, an optical fiber interface. The first driving circuit 506 includes: an optical module 515 configured to perform photoelectric conversion. For example, the first driving circuit 510 may An electrical signal output by a programmable logic device 512 is converted into an optical signal and output through a first interface 502 such as an optical fiber interface. For example, the optical module may be a Small Form-factor Pluggable (SFP) optical module. More specifically, for multiple first interfaces 502, such as fiber optic interfaces, the first driving circuit 506 is typically configured with multiple optical modules. For example, when the first interface 502 is eight channels, the first driving circuit 506 may be configured with eight optical modules. . Of course, it is worth mentioning that the number of the first interfaces 502 in this embodiment is not limited, as long as it can meet actual application requirements.

As shown in FIG. 5, the second driving circuit 507 is connected between the first programmable logic device 512 and the second interface 503 of the first main control circuit 501. In this embodiment, the second interface 503 may be, for example, a network port, and the second driving circuit 507 includes an Ethernet physical layer transceiver (PHY) 514. In order to enhance the signal transmission distance, the Ethernet physical layer transceiver 514 may also be used. A network transformer (not shown in the figure) is installed on the output side. More specifically, for the multi-channel second interface 503, the second driving circuit 507 is typically configured with a combination of a multi-channel Ethernet physical layer transceiver 514 and a network transformer. For example, when the second interface 503 is sixteen channels, the second The driving circuit 507 can be configured with a combination of a sixteen-way Ethernet physical layer transceiver and a network transformer. Of course, it is worth mentioning that the number of the second interfaces 503 in this embodiment is not limited, as long as it can meet the actual application requirements. In addition, it is worth noting that the setting of different types of network ports 502 and optical fiber interfaces 503 is beneficial to the diversification of the output interface of the display controller 50, thereby improving its compatibility; With the same load capacity, the ratio of the configuration quantity of the optical fiber interface 503 to the network port 502 is preferably 1: 4. In addition, the number of configurations of the network port 502 and the optical fiber interface 503 is not limited to the sixteen channels and four channels in the foregoing example, and may be eight channels and two channels, respectively. Of course, the second interface 503 may also be an optical fiber interface or a digital coaxial interface.

Referring to FIG. 6, the signal converter 60 in this embodiment includes, for example, a second main control circuit 606, a third driving circuit 604, a third interface 601, a fourth driving circuit 605, and a fourth interface 602. The third interface 601 is, for example, an optical fiber interface such as SC, ST, LC, etc., and the fourth interface 602 is, for example, a network interface such as an RJ45 interface.

The second main control circuit 606 is provided with a signal conversion unit 603. The signal conversion unit 603 is configured to perform format conversion on a first signal (for example, an optical fiber data signal) obtained from the third interface 601 and transmitted through the third driving circuit 604 to generate a second signal (for example, an Ethernet data signal) and output it to the first Four driving circuits 605 to output from the fourth interface 602.

Further, as shown in FIG. 7, the second main control circuit 606 includes, for example, a second programmable logic device 608 and a second microcontroller 607 such as an STM32F207 chip MCU connected to the second programmable logic device 608. The signal conversion unit 603 may be built in the second programmable logic device 608. The second programmable logic device 608 is, for example, an FPGA, and the second microcontroller 607 is, for example, a controller for loading and configuring the FPGA and communicating with an external device as the signal converter 60. For example, the second microcontroller 607 Network ports, USB ports, etc. interact with external devices to update system programs.

The third driving circuit 604 is connected between the third interface 601 and the second programmable logic device 608 in the second main control circuit 606. In this embodiment, the third interface 601 is, for example, an optical fiber interface, and the third driving circuit 604 includes an optical module 609 for performing photoelectric conversion. For example, an optical signal input through the third interface 601, such as an optical fiber interface, can be converted into an electrical signal input. To the second programmable logic device 608. For example, the optical module 609 may be an SFP optical module. More specifically, for multiple third interfaces 601 such as an optical fiber interface, the third driving circuit 604 is typically configured with multiple optical modules 609. For example, when the optical fiber interface 601 is four channels, the third driving circuit 604 may be configured with four optical modules. Module. Of course, it is worth mentioning that the number of the optical fiber interfaces 601 in this embodiment is not limited, and can meet the actual application requirements.

The fourth driving circuit 605 is connected between the fourth interface 602 and the second programmable logic device 608 in the second main control circuit 606. In this embodiment, the fourth interface 602 is, for example, a network port, and the fourth driving circuit 605 includes an Ethernet physical layer transceiver (PHY) 610. In order to enhance the signal transmission distance, the output of the Ethernet physical layer transceiver 610 may also be used. A network transformer (not shown in the figure) is installed on the side. More specifically, for the multiple fourth interfaces 602 such as network ports, the fourth driving circuit 605 is typically configured with a combination of multiple Ethernet physical layer transceivers 610 and a network transformer. For example, when the network port 602 is sixteen channels, The fourth driving circuit 605 may be configured with a combination of a sixteen-way Ethernet physical layer transceiver 610 and a network transformer. Of course, it is worth mentioning that the number of network ports 139 in this embodiment is not limited, and it can meet the actual application requirements. Of course, the fourth interface 602 may also be an optical fiber interface or a digital coaxial interface.

In summary, in the second embodiment of the present application, a display controller provided with a signal duplication unit and a signal converter provided with a signal conversion unit are used to implement different displays to display the same screen. In addition, the display controller The optical fiber connection between the signal converter and the signal converter. Due to the fast speed and large bandwidth of the optical fiber communication, the large-load (or large data transmission) function of the display screen is realized and the synchronization of the display contents of the two display screens is improved. Bring the ultimate experience and perfect visual effects to the user; As the transmission distance of optical fiber communication is long, such as 10 kilometers, different distance displays can display the same picture, giving the user a perfect visual experience; meanwhile, for the display The screen controller and display screen only need one computer for control, which simplifies the synchronous control operation and facilitates maintenance and management. In addition, compared with the current display screen control system, the display screen control system provided in the embodiment of the present application only needs to use one display controller to realize synchronous display of the two display screens, which is cost-effective and saves costs for users.

In addition, various elements between different embodiments of the present application can also be arbitrarily combined, as long as it does not violate the idea of the present application, it should also be regarded as the content disclosed in this application.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or integrated. To another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware, or in the form of hardware plus software functional units.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, rather than limiting them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that it can still Modifications to the technical solutions described in the foregoing embodiments, or equivalent replacements of some of the technical features thereof; and these modifications or replacements do not depart the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A display control system for loading a first display screen and a second display screen; the display control system includes:

The display screen controller includes a video interface, a first optical fiber interface, a first network port, and a signal replication unit. The video interface is connected to the signal replication unit, and the signal replication unit is further connected to the first optical fiber interface and the signal replication unit. First network port

The signal converter includes a second optical fiber interface, a signal conversion unit, and a second network port, and the signal conversion unit is connected to the second optical fiber interface and the second network port;

The first optical fiber interface is connected to the second optical fiber interface through a cable;

The first network port is used to connect the first display screen;

The second network port is used to connect the second display screen;

The video interface is used to connect an external video source to receive video data;

The signal copying unit is configured to process the received video data to obtain a first Ethernet data signal and an optical fiber data signal, and transmit the first Ethernet data signal to all of the devices through the first network port. The first display screen, and outputting the optical fiber data signal to the second optical fiber interface through the first optical fiber interface;

The signal conversion unit is configured to perform format conversion on the optical fiber data signal obtained from the second optical fiber interface to generate a second Ethernet data signal, and convert the second Ethernet data signal through the second network port. Output to the second display screen.
A display control system includes:

Display controller, comprising a video interface, a first interface, a second interface and a signal duplication unit;

A signal converter including a third interface, a signal conversion unit, and a fourth interface;

The first interface is connected to the third interface through a cable.

The signal copying unit is configured to perform copy and distribution processing on the video data input from the video interface to obtain a first data signal and a second data signal, output the first data signal through the second interface, and output the first data signal through the second interface. The second data signal is output to the third interface through the first interface;

The signal conversion unit is further configured to perform format conversion on the second data signal obtained from the third interface to generate a third data signal, and output the third data signal through the fourth interface.
The display control system according to claim 2, wherein the first interface and the third interface are optical fiber interfaces, and the first interface is connected to the third interface through an optical fiber.
The display control system according to claim 2, wherein the display controller comprises a video decoding circuit, a first main control circuit, a first driving circuit, and a second driving circuit; the video decoding circuit, the first The driving circuit and the second driving circuit are respectively connected to the first main control circuit, the video interface is connected to the video decoding circuit, the first interface is connected to the first driving circuit, and the second interface is connected to the In the second driving circuit, the signal copying unit is included in the first main control circuit.
The display control system according to claim 4, wherein the first main control circuit comprises a first microcontroller and a first programmable logic device, and the first microcontroller is connected to the first programmable logic device The video decoding circuit, the first driving circuit, and the second driving circuit are respectively connected to the first programmable logic device, and the signal replication unit is built in the first programmable logic device.
The display control system according to claim 4, wherein the second interface is a network port, the second driving circuit includes an Ethernet physical layer transceiver, and the network port is connected through the Ethernet physical layer transceiver The signal replication unit.
The display control system according to claim 6, wherein there are a plurality of network ports, and the second driving circuit includes a plurality of Ethernet physical layer transceivers, and the plurality of network ports respectively pass the plurality of Ethernet ports. A network physical layer transceiver is connected to the signal replication unit.
The display control system according to claim 2, wherein the signal converter comprises a second main control circuit, a third driving circuit, and a fourth driving circuit; the third driving circuit and the fourth driving circuit are respectively connected In the second main control circuit, the third interface is connected to the third driving circuit, the fourth interface is connected to the fourth driving circuit, and the signal conversion unit is included in the second main control circuit.
The display control system according to claim 8, wherein the second main control circuit comprises a second programmable logic device and a second microcontroller connected to the programmable logic device, and the third driving circuit is connected to Between the third interface and the second programmable logic device, the fourth driving circuit is connected between the fourth interface and the second programmable logic device, and the signal conversion unit is built in the The second programmable logic device is described.
The display control system according to claim 8, wherein the fourth interface is a network port, the fourth driving circuit includes an Ethernet physical layer transceiver, and the network port is connected through the Ethernet physical layer transceiver The signal conversion unit.
The display control system according to claim 10, wherein there are a plurality of network ports, and the fourth driving circuit includes a plurality of Ethernet physical layer transceivers, and the plurality of network ports respectively pass the plurality of Ethernet ports. A network physical layer transceiver is connected to the signal conversion unit.
The display control system according to claim 8, wherein the signal converter is a photoelectric converter, the third driving circuit includes an optical module, and the optical module is connected to the third interface and the signal conversion Between units.
The display control system according to claim 2, wherein the display controller further comprises a communication interface, and the communication interface is used for the display controller to communicate with an external device.
The display control system according to claim 13, wherein the communication interface is a network port, a USB interface, or a serial port.
A display control system includes:

A display controller includes a video interface, a video decoding circuit, a first main control circuit, a first interface, a first driving circuit, a second interface, and a second driving circuit, the video decoding circuit, the first driving circuit, and The second driving circuit is respectively connected to the first main control circuit, the video interface is connected to the video decoding circuit, the first interface is connected to the first driving circuit, and the second interface is connected to the second Drive circuit;

The signal converter includes a second main control circuit, a third interface, a third driving circuit, a fourth interface, and a fourth driving circuit, and the third driving circuit and the fourth driving circuit are respectively connected to the second main control Circuit, the third interface is connected to the third driving circuit, and the fourth interface is connected to the fourth driving circuit;

The first interface is connected to the third interface through a cable;

The video decoding circuit is configured to decode the video data obtained by the video interface and transmit the video data to the first main control circuit;

The first main control circuit is configured to copy and distribute the decoded video data to obtain a first data signal and a second data signal, pass the first data signal through the second driving circuit, and the first Two interface outputs, and outputting the second data signal to the third interface through the first driving circuit and the first interface;

The second main control circuit converts the second data signal obtained from the third interface into a third data signal, and outputs the third data signal through the fourth driving circuit and the fourth interface.