WO2021000307A1 - Plug-in assembly, display control card and display system - Google Patents

Abstract

A plug-in assembly (25, 4111, 5111, 6111, 7111, 8111), a display control card (20, 41, 51, 61, 71, 81, 91) and a display system (40, 50, 60, 70, 80, 90). The plug-in assembly (25, 4111, 5111, 6111, 7111, 8111) comprise: a first connector (JH1) and a second connector (JH2) that are disposed as a pair. The first connector (JH1) comprises a power supply pin group, a function expansion pin group and a plurality of first data output pin groups, and the function expansion pin group is located between the plurality of first data output pin groups and the power supply pin group in the length direction of the first connector (JH1). The second connector (JH2) comprises a display control signal output pin group, a multipath Ethernet interface pin group, and a plurality of second data output pin groups, and the display control signal output pin group is located between the plurality of second data output pin groups and the multipath Ethernet interface pin group in the length direction of the second connector (JH2); a ground pin pair is provided between two adjacent first data output pin groups, and a ground pin pair is provided between two adjacent second data output pin groups.

Description

Plug-in components, display control card and display system Technical field

This application relates to the field of display technology, and in particular to a plug-in component, a display control card and a display system.

Background technique

With the development of the LED display industry, the structure of the display box provided by display manufacturers gradually solidified. In order to adapt to the display boxes provided by more display manufacturers, the receiving card products need to be made into smaller core cards. The core card usually needs to be used with an adapter board (or HUB board), and the two are connected together through a connector to drive the display box in the LED display. Common connectors currently include golden fingers and board-to-board connectors. However, the golden finger connection requires high requirements for the thickness and error of the core board. In the process of use, on the one hand, it is easy to be stressed and deformed, causing problems such as chip cracking. On the other hand, the error caused by the wear of the core board or the thickness of the core board can affect the signal Transmission has a big impact. At present, the mainstream board-to-board connector in the industry is a 120pin connector, but multiple pins used for function expansion on it are not used. There are problems that the pin layout is not compact enough, the interface pin resources are wasted, and the production cost is relatively high.

Application content

The embodiments of the present application provide a plug-in assembly, a display control card, and a display system, which implement compact arrangement of interface pins, save interface resources, and reduce production costs.

On the one hand, a connector assembly provided by an embodiment of the present application includes a first connector and a second connector arranged in pairs, and the first connector includes a power pin group, a function expansion pin group, and a plurality of The first data output pin group, the function expansion pin group is located between the plurality of first data output pin groups and the power supply pin group in the length direction of the first connector; The second connector includes a display control signal output pin group, a multiple Ethernet interface pin group, and a plurality of second data output pin groups. The display control signal output pin group is in the length direction of the second connector The upper part is located between the plurality of second data output pin groups and the multiple Ethernet interface pin group; a ground pin pair is provided between two adjacent first data output pin groups, A pair of ground pins is arranged between two adjacent second data output pin groups; each of the first data output pin groups includes M groups of data output pins; each of the second data output pins The group includes N groups of data output pins, where M and N are positive and even numbers and M is greater than N.

The connector assembly of this embodiment implements a centralized and compact arrangement of the pin groups in the connector assembly to achieve reasonable distribution of interface resources and reduce costs.

In an embodiment of the present application, the multiple Ethernet interface pin groups are continuously arranged on both sides of the second connector, and the multiple Ethernet interface pin groups and the display control signal output Ground pin pairs are arranged between the pin groups.

In an embodiment of the present application, a ground pin pair is provided between the function expansion pin group and the plurality of first data output pin groups, and the function expansion pin group is connected to the power supply pin. There are idle pins between the groups.

In an embodiment of the present application, the first connector includes eighty-four pins, and in the longitudinal direction of the first connector, they are: two ground pins and eighteen data output pins. , Two ground pins, eighteen data output pins, two ground pins, eighteen data output pins, two ground pins, sixteen function extension pins, two empty connection pins, Four power supply pins; the second connector includes eighty-four pins and in the length direction of the second connector: two ground pins, sixteen Ethernet interface pins, two One ground pin, one test button input signal pin, one status light signal pin, two ground pins, ten display control signal output pins, two ground pins, twelve data output pins, two One ground pin, twelve data output pins, two ground pins, twelve data output pins, two ground pins, and six data output pins.

In an embodiment of the present application, the function expansion pin group includes five light board memory control interface pins, one light board memory serial clock signal pin, and one light board memory serial interface chip select signal pin , A shift register data signal pin, a shift register clock signal pin, a light board memory storage data input pin or a smart module data transmission signal pin, a light board memory storage data output pin or one Smart module data receiving signal pin, a dual-card connection signal pin, a dual-card identification signal pin, and two power detection signal pins.

On the other hand, a display control card provided by an embodiment of the present application includes: a circuit board, a programmable logic device, a microcontroller, an Ethernet physical layer transceiver, and a first plug-in component; the first plug-in component Is the aforementioned plug-in assembly; the programmable logic device, the microcontroller, the Ethernet physical layer transceiver, and the first plug-in assembly are arranged on the circuit board; the microcontroller Connect the programmable logic device and the power pin group of the first connector, and the Ethernet physical layer transceiver is connected to the programmable logic device and the first connector assembly Between the multiple Ethernet interface pin groups of the two connectors, the programmable logic device is connected to the power pin group and the function expansion of the first connector of the first connector assembly Pin group, the plurality of first data output pin groups, the plurality of second data output pin groups of the second connector of the first connector assembly, and the display control signal output lead Foot set.

The above technical solution has the following advantages and effects: by arranging the aforementioned plug-in components on the display control card, the input and output interfaces of the display control card tend to be standardized and the convenience of connection is improved.

In an embodiment of the present application, the display control card further includes an adapter board, and a second connector assembly having the same pin definition as the connector assembly is provided on the adapter board. The board is connected to the first plug-in component through the second plug-in component; the adapter board is also provided with a network transformer and an Ethernet interface connected to the network transformer, and the Ethernet interface passes through the network transformer , The second plug-in component is connected to the multiple Ethernet interface pin group of the first plug-in component.

In another aspect, a display system provided by an embodiment of the present application includes: the aforementioned display control card and an LED light board; the adapter board of the display control card is provided with a data output interface, and the data output The interface is connected to the second connector assembly, and the data output interface is connected to the plurality of first data output pin groups of the first connector assembly and the second connector through the second connector assembly The plurality of second data output pin groups and the display control signal output pin group; the LED light board is provided with a light board input interface, and the LED light board is connected to the station through the light board input interface The data output interface.

In an embodiment of the present application, the function expansion pin group includes lamp panel memory serial clock signal pins, lamp panel memory serial interface chip select signal pins, lamp panel memory storage data input pins, lamp panel The memory stores data output pins and at least one lamp panel memory control interface pin, the lamp panel memory serial clock signal pin, the lamp panel memory serial interface chip select signal pin, and the lamp panel memory stores data The input pin, the data output pin of the light board memory and the at least one light board memory control interface pin are respectively connected to the programmable logic device; the adapter board is provided with a first signal driving circuit and a second A multiple selection circuit, the first signal driving circuit is connected between the second connector assembly and the data output interface, and is connected to the first connector assembly through the second connector assembly The serial clock signal pin of the light board memory, and the data input pin of the light board memory; the first multiple selection circuit is connected between the first signal driving circuit and the second plug-in assembly , And connected to the light panel memory serial interface chip select signal pin of the first connector assembly through the second connector assembly, the light panel memory storage data output pin, and the at least one Light board memory control interface pin; the LED light board includes a non-volatile memory and a second signal drive circuit, the second signal drive circuit is connected between the non-volatile memory and the light board input interface In between, the light board input interface is connected to the data output interface.

In an embodiment of the present application, the function expansion pin group includes lamp panel memory serial clock signal pins, lamp panel memory serial interface chip select signal pins, lamp panel memory storage data input pins, lamp panel The memory stores data output pins, shift register data signal pins, shift register clock signal pins, and at least one lamp panel memory control interface pin, the lamp panel memory serial clock signal pin, the lamp panel memory Serial interface chip selection signal pin, the light board memory storage data input pin, the light board memory storage data output pin, the shift register data signal pin, the shift register clock signal pin And the at least one light board memory control interface pin is respectively connected to the programmable logic device; the adapter board is provided with a third signal drive circuit and a second multiplexer circuit, and the third signal drive circuit is connected The serial clock signal pin of the lamp panel memory, the serial clock signal pin of the lamp board memory of the second plug-in component and the data output interface and connected to the first plug-in component through the second plug-in component The chip select signal pin of the serial interface of the light board memory, the data input pin of the light board memory, and the clock signal pin of the shift register; the second multiplexer circuit is connected to the third signal drive circuit The light board memory storage data output pin and the shift register data signal pin between and the second connector assembly and connected to the first connector assembly through the second connector assembly And the at least one light board memory control interface pin; the LED light board includes a fourth signal driving circuit, a shift register, a second non-volatile memory and a light board output interface, and the fourth signal driving circuit is connected The light board input interface, the second nonvolatile memory, the shift register, and the light board output interface, the shift register is connected to the light board input interface; the display system further includes The second LED light board, the second LED light board includes a second light board input interface, a fifth signal drive circuit, a second shift register, and a third non-volatile memory. The fifth signal drive circuit is connected to the The second light board input interface, the third non-volatile memory, the second shift register, the second shift register is connected to the second light board input interface, the second light board input The interface is connected to the light board output interface of the LED light board.

In an embodiment of the present application, the fourth signal driving circuit includes a first level power supply driver, a resistance voltage divider circuit, and a second level power supply driver, and the resistance voltage divider circuit is located at the first level power supply driver. Between the driver and the second level driver, the shift register is connected to the first level power supply driver and the second level power supply driver, and the first level power supply drive circuit is connected to the light panel The input interface, the shift register, the light board output interface, and the second level power supply driver are connected to the shift register and the second nonvolatile memory.

In an embodiment of the present application, the function expansion pin group includes a smart module data sending signal pin, a smart module data receiving signal pin, and at least one light board memory control interface pin; the smart module The data sending signal pin, the smart module data receiving signal pin and the at least one lamp board memory control interface pin are respectively connected to the programmable logic device; a sixth signal driving circuit is provided on the adapter board And a third multiplexer circuit, the third multiplexer circuit is connected between the sixth signal drive circuit and the second connector assembly, and is connected to the first connector through the second connector assembly The at least one light board memory control interface pin and the smart module data sending signal pin and the smart module data receiving signal pin of the plug-in assembly; the LED light board includes a seventh signal driving circuit, A third non-volatile memory and a second microcontroller, the seventh signal driving circuit is connected between the second microcontroller and the light board input interface, and the third non-volatile memory is connected In the second microcontroller, the light board input interface is connected to the data output interface.

In an embodiment of the present application, the function expansion pin group includes a plurality of power detection signal pins, and the plurality of power detection signal pins are respectively connected to the programmable logic device; the display system further includes a plurality of A power supply, and the multiple power sources are connected to the multiple power detection signal pins of the first plug-in component one by one through the adapter board.

In an embodiment of the present application, the display control card further includes a second circuit board, and the second circuit board is provided with a second programmable logic device, a third microcontroller, and a second Ethernet physical layer transceiver And a third plug-in component, the third plug-in component is the aforementioned plug-in component; the third microcontroller connects the second programmable logic device and the third plug-in component The power pin group of the first connector, the second Ethernet physical layer transceiver is connected to the second programmable logic device and the second connector of the third connector assembly Between multiple Ethernet interface pin groups, the programmable logic device is connected to the power pin group of the first connector of the third connector assembly, the function expansion pin group, and the A plurality of first data output pin groups, the plurality of second data output pin groups of the second connector and the display control signal output pin group; the adapter board is also provided with The third connector assembly has a fourth connector assembly with the same pin definition; the adapter board is connected to the third connector assembly through the fourth connector assembly; the adapter board is also provided with a Two Ethernet interfaces and a second network transformer, the second Ethernet interface is connected to the multi-channel Ethernet interface pins of the third plug-in component through the second network transformer and the fourth plug-in component Group; the data output interface is connected to the plurality of first data output pin groups of the first connector of the third connector assembly through the fourth connector assembly, the second connector The plurality of second data output pin groups and the display control signal output pin group; the function expansion pin groups of the first plug-in assembly and the third plug-in assembly respectively include dual card connections Signal pins and dual-card identification signal pins; the dual-card connection signal pins and the dual-card identification signal pins of the first plug-in assembly are respectively connected to the programmable circuit board Logic device; the dual card connection signal pin and the dual card identity identification signal pin of the third plug-in assembly are respectively connected to the programmable logic device on the second circuit board; the first The dual-card identification signal pin of a plug-in component is connected to an external high level, and the dual-card connection signal pin of the first plug-in component is connected to the second circuit board through the adapter board The dual card connection signal pin of the third connector assembly; the dual card identification signal pin of the third connector assembly on the second circuit board is grounded.

In an embodiment of the present application, the second connector of the first connector assembly and the second connector of the third connector assembly respectively include test key input signal pins; the adapter board further A test button is provided, and the test button is connected to the test button input signal pin of the first plug component through the second plug component; the test button is connected to the test button input signal pin of the first plug component through the fourth plug component. The test button input signal pin of the third connector assembly.

The above-mentioned one or more technical solutions have one or more advantages or beneficial effects as follows: by centralizing and compactly arranging various pin groups in the plug-in assembly, the reasonable distribution of interface resources is realized and the cost is reduced. In addition, the configuration of the aforementioned plug-in components on the display control card facilitates the standardization of the input and output interfaces of the display control card and improves the convenience of connection. Furthermore, by defining the pins of the function extension pin group, and designing the corresponding display control card and LED light board, the backup of the correction coefficient and parameters of the LED light board is realized, the intelligent monitoring function expansion of the LED light board module, Dual power supply monitoring, dual receiving card data transmission to ensure the display effect of the LED light board, etc.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings.

1 and 2 are schematic diagrams of the pin distribution of two connectors arranged in pairs in the connector assembly in the first embodiment of the application.

Fig. 3a is a schematic structural diagram of a display control card in the second embodiment of the application.

Fig. 3b is a schematic structural diagram of another display control card in the second embodiment of the application.

FIG. 4 is a schematic diagram of the structure of the display system in the third embodiment of the application.

FIG. 5 is a schematic diagram of the structure of the display system in the fourth embodiment of the application.

FIG. 6 is a schematic structural diagram of an example of the display system in the fourth embodiment of this application.

FIG. 7 is a schematic diagram of the structure of the display system in the fifth embodiment of this application.

[Corrected according to Rule 26 01.04.2020]

Fig. 8 is a further structural diagram of the LED light board in Fig. 7.

FIG. 9 is a schematic structural diagram of an example of the display system in the fifth embodiment of this application.

Fig. 10a is a schematic structural diagram of a display system in a sixth embodiment of this application.

FIG. 10b is a schematic diagram of another structure of the display system in the sixth embodiment of this application.

FIG. 11 is a schematic structural diagram of an example of the display system in the sixth embodiment of this application.

FIG. 12 is a schematic structural diagram of a display system in a seventh embodiment of this application.

FIG. 13 is a schematic diagram of the structure of the display system in the eighth embodiment of this application.

FIG. 14 is a schematic structural diagram of an example of the display system in the eighth embodiment of this application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

First embodiment

As shown in Fig. 1 and Fig. 2, a connector assembly provided in the first embodiment of the present application includes a connector JH1 and a connector JH2 arranged in pairs. Among them, the connector JH1 includes, for example, a power pin group, a plurality of first data output pin groups, and a function expansion pin group. The connector JH2 includes, for example, a display control signal output pin group, a plurality of second data output pin groups, a multi-channel Ethernet interface pin group, and preferably also a test key input signal pin and a status light signal pin. Among them, the plurality of first data output pin groups and the plurality of second data output pin groups are, for example, used to transmit multiple RGB data signals to drive a display unit, such as an LED light board, for image display. The number of the plurality of first data output pin groups is, for example, 3, of course, it can also be other positive integers; the number of the plurality of second data output pin groups is, for example, 3, of course, it can also be other positive integers. Each first data output pin group includes, for example, M groups of data output pins, and each second data output pin group includes N groups of data output pins, where M and N are positive and even numbers, and M is greater than N. Specifically, each first data output pin group includes, for example, six sets of data output pins, and each second data output pin group includes four sets of data output pins, and in the connector JH2 shown in FIG. There is a third data output pin group including two sets of data output pins. Each group of data output pins includes, for example, a red data (R) output pin, a green data (G) output pin, and a blue data (B) output pin. In this embodiment, the connector JH1 and the connector JH2 can support a maximum of 32 RGB data group outputs in total.

In terms of pin layout, the function expansion pin group is located between the multiple first data output pin groups and the power pin group in the length direction of the connector JH1 (the vertical direction in Figure 1), and the multiple first Separate the data output pin group and the power pin group to increase the distance between the two, which not only makes the pin layout more compact, but also reduces the interference of the power supply to the RGB data group and improves the stability of data transmission . The display control signal output pin group is located between the multiple second data output pin groups and the multiple Ethernet interface pin groups in the length direction of the connector JH2 (the vertical direction in FIG. 2). This way of arranging the pins of the same function together makes the pin arrangement of the connectors JH1 and JH2 more compact, and setting this kind of grounding pins according to a fixed rule helps reduce the wiring difficulty. In addition, ground pin pairs, such as two ground pins, are provided between two adjacent first data output pin groups, and, for example, two ground pin pairs are provided between two adjacent second data output pin groups. The ground pin can improve the signal transmission reliability and stability of the RGB data group. Furthermore, ground pin pairs, such as two ground pins, are provided between the function expansion pin group and the multiple first data output pin groups of the connector JH1, which can further improve the signal output reliability and stability of the RGB data group Sex. Furthermore, there are free connection pins between the function expansion pin group and the power supply pin group; in this way, problems such as short circuit and misconnection caused by the misplacement of the pins when the connector JH1 is plugged and unplugged can be prevented. This foolproof design can reduce product failure rate and improve product quality. Furthermore, a grounding pin pair is also provided between the test button input signal pin and the status light signal pin and the display control signal output pin group. The test button input signal pin and the status light signal pin are located between the multi-channel Ethernet interface pin group and the display control signal output pin group. A grounding pin pair is also provided between the test button input signal pin and the status light signal pin and the multi-channel Ethernet interface pin group. In this way, the signal interference between the test button input signal pins and status light signals, the multi-channel Ethernet interface pin group and the display control signal output pin group can be reduced, and the stability of signal transmission can be improved. In this way, the reasonable distribution of the interface resources of the connectors JH1 and JH2 is realized.

Generally, the number of pins of the connectors JH1 and JH2 is not more than 100 respectively. Specifically, compared with the 120-pin connector in the prior art, the connectors JH1 and JH2 in the embodiment of the present application are, for example, 84-pin connector female sockets or male sockets, respectively. See Table 1 and Table 2 for the function definition. The connectors JH1 and JH2 provided in this application omit a number of unused pins, and use a better pin arrangement to realize the data transmission of the display control card and various function expansion requirements.

Table 1 Definition of each pin function of connector JH1

Table 2 Definition of each pin function of connector JH2

Specifically, as shown in Figure 1 and Table 1, the 84 pins of the connector JH1 in the length direction are: 2 ground pins (pins 1, 2), 18 data output pins (pin 3 -20), 2 ground pins (pins 21, 22), 18 data output pins (pins 23-40), 2 ground pins (pins 41, 42), 18 data output pins (Pins 43-60), 2 ground pins (pins 61, 62), 16 function expansion pins (pins 63-78), 2 idle pins (pins 79, 80), 4 Power supply pins (pins 81-84). In addition, the voltage of each power supply pin is, for example, a 5V DC voltage, and the maximum current is, for example, 0.5A. Therefore, the four power pins can provide a maximum current of 2A. In other embodiments of the present application, the number of pins of the power pin group can also be set according to actual needs, and it is not limited here. In other embodiments of the present application, the empty connection pins between the function expansion pin group and the power supply pin group can be replaced with power pins, function expansion pins, or ground pins, or even the empty connection pins can be eliminated. Pin.

In view of the above, the pins of the function expansion pin group are function expansion interfaces, which are mainly used for the expansion of lamp board memory (such as FLASH memory), lamp board intelligent module, dual receiving card backup, dual power detection and other functions. Therefore, the function extension pin group can include, for example, light board memory control interface pins, light board memory serial clock signal pins, light board memory serial interface chip select signal pins, light board memory storage data input pins, and smart Module data sending signal pin, light board memory storage data output pin, smart module group data receiving signal pin, shift register data signal pin, shift register clock signal pin, power detection signal pin, dual The card is connected to part or all of the signal pins and the dual-card identification signal pins.

The function expansion pin group in the connector JH1 in the embodiment of the present application includes 16 pins. Refer to Table 3 for specific pin definitions. Specifically, the function extension pin group includes, for example, 5 light board memory control interface pins (HUB_CODE0, HUB_CODE1, HUB_CODE2, HUB_CODE3, and HUB_CODE4), 1 light board memory serial clock signal pin (SPI_CLK), and 1 light board Memory serial interface chip select signal pin (SPI_CS), 1 light board memory storage data input pin (SPI_MOSI), 1 light board memory storage data output pin (SPI_MISO), 1 shift register data signal pin (H164_CSD), 1 shift register clock signal pin (H164_CLK), 1 dual card connection signal pin (MS_DATA), 1 dual card identification signal pin (MS_ID), 2 power detection signal pins ( POWER_STA1, POWER_STA2) and a free pin. The vacant pins here can also be defined as other function extensions, and the embodiments of the present application are not limited thereto. In addition, in order to further save interface pin resources, the light board memory storage data input pin (SPI_MOSI) can be multiplexed as the smart module data transmission signal pin (UART_TX), and the light board memory storage data output pin (SPI_MISO) ) Is multiplexed as the data receiving signal pin (UART_RX) of the smart module for the expansion of the function of the smart module. In this way, the number of pins of the connector JH1 can be further reduced, the pins are more compact, the pin interface resources are saved, and the production cost is reduced. It is worth mentioning that in other embodiments, the connector JH1 may not be provided with a function extension pin group, or may be defined by the user as other function pins such as data output pins, or even idle pins. This embodiment is not limited to this.

Table 3 Function extension pin group interface definition

Pin name	Pin signal	A brief description
RFU3	HUB_CODE0	Lamp board memory control interface 1
RFU4	SPI_CLK	Lamp board memory serial clock signal
RFU5	HUB_CODE1	Lamp board memory control interface 2
RFU6	SPI_CS	Chip select signal for serial interface of lamp board memory
RFU7	HUB_CODE2	Lamp board memory control interface 3
RFU8	SPI_MOSI/UART_TX	Light board memory storage data input / smart module data sending signal
RFU9	HUB_CODE3	Lamp board memory control interface 4
RFU10	SPI_MISO/UART_RX	Light board memory storage data output / smart module data receiving signal
RFU11	H164_CSD	Shift register data signal
RFU12	/	Vacant
RFU13	H164_CLK	Shift register clock signal
RFU14	POWER_STA1	Power detection signal 1
RFU15	MS_DATA	Dual card connection signal
RFU16	POWER_STA2	Power detection signal 2
RFU17	MS_ID	Dual card identification signal
RFU18	HUB_CODE4	Lamp board memory control interface 5

It is worth mentioning that in other embodiments of the present application, the function extension pin group on the connector JH1 can also be defined by the user as pins with other functions, such as power pins, or ground pins, or data output pins. Pins, etc., even empty or unconnected pins. This embodiment is not limited to this.

In view of the above, as shown in Figure 2 and Table 2, the 84 pins of the connector JH2 in the length direction are: 2 ground pins (pins 1, 2), 16 Ethernet interface pins (pins 3-18), 2 ground pins (pin 19, 20), 1 test button input signal pin (pin 21), 1 status light signal pin (pin 22), 2 ground pins , 10 display control signal output pins (pins 23-34), 2 ground pins (pins 35, 36), 12 data output pins (pins 37-48), 2 ground pins ( Pin 49, 50), 12 data output pins (pins 51-62), 2 ground pins (pins 63, 64), 12 data output pins (pins 65-76), 2 Ground pins (pins 77, 78) and 6 data output pins (pins 76-84).

In addition, it can be seen from Figure 2 that the 16 Ethernet interface pins (pins 3-18) are symmetrically distributed on both sides of the connector JH2 in the horizontal direction, and 8 Ethernet interface pins are distributed on each side. The eight Ethernet interface pins on the side are continuously arranged on the connector JH2, that is, no grounding pin is set between two adjacent Ethernet interface pins. Therefore, compared with the existing 120-pin connector, the 84-pin connector provided in this embodiment has a more compact pin layout, lower cost, and more convenient connection.

To sum up, the foregoing first embodiment of the present application centrally arranges various pin groups in the connector assembly, and allocates the same functional signal pins together, which can make the pins of the connector more compact and convenient for wiring. Reasonable distribution of interface resources reduces costs. In addition, a free connection pin is provided between the function expansion pin group and the power supply pin group. In this way, it is possible to prevent problems such as short circuit and misconnection caused by pin misalignment when the connector JH1 is inserted and unplugged. This foolproof design can reduce product failure rate and improve product quality. Compared with the existing 120-pin connector, by designing a connector with no more than 100 pins, such as 84 pins, a number of unused pins are eliminated and a better pin arrangement Used to realize the data transmission of the display control card and various function expansion requirements. Furthermore, the multiple Ethernet interface pin groups are continuously arranged on both sides of the connector JH2, making the pin layout of the connector JH2 more compact, lower cost, and more convenient for connection.

Second embodiment

As shown in FIG. 3a, a display control card 20 provided in the second embodiment of the present application includes: a circuit board 21, a programmable logic device 22, a microcontroller 23, Ethernet physical layer transceivers 24a and 24b, and interfaces Plug component 25. In addition, the display control card 20 also includes some auxiliary devices such as a volatile memory 26 and a non-volatile memory 27. The programmable logic device 22, the microcontroller 23, the Ethernet physical layer transceivers 24a and 24b, the plug-in assembly 25, and auxiliary devices such as the volatile memory 26 and the non-volatile memory 27 are provided on the circuit board 21.

Among them, the programmable logic device 22 is typically a field programmable gate array (FPGA) device, and the microcontroller 23 connects the programmable logic device 22 and the power pin group of the connector JH1 of the connector assembly 25, and it is typically MCU (for example, MCU based on ARM core, etc.), Ethernet physical layer transceivers 24a, 24b are connected to the programmable logic device 22, which are, for example, two Gigabit Ethernet PHY chips. Of course, only one Ethernet interface may also be provided on the circuit board 21. The connector assembly 25 is, for example, a connector JH1 as shown in FIG. 1 and a connector JH2 as shown in FIG. 2 which are arranged in pairs, which may be a male connector. The Ethernet physical layer transceivers 24a, 24b are connected to the multiple Ethernet interface pin group of the connector JH2 and the power pin group of the connector JH1, and the programmable logic device 22 is connected to the power pin group of the connector JH1 and multiple A data output pin group, a function expansion pin group, a plurality of second data output pin groups of the connector JH2, and a display control signal output pin group. The volatile memory 26 is connected to the programmable logic device 22 and the power supply pin group of the connector JH1, which is, for example, a DDR memory; the nonvolatile memory 27 is connected to the power supply of the programmable logic device 22, the microcontroller 23 and the connector JH1 The pin group is shared by both, and it is, for example, a FLASH memory (flash memory).

Further, as shown in FIG. 3b, the display control card 20 may further include an adapter plate 31. A plug-in assembly 32 is provided on the adapter plate 31. The connector assembly 32 is, for example, a connector assembly with the same pin definition as the connector assembly 25, for example, two female connector sockets with 84 pins that match the male socket of the connector. Of course, it is also a connector with other pin numbers, which is not limited here. Further, the adapter board 31 is also provided with a network transformer 33 and Ethernet interfaces 34a and 34b connected to the network transformer. The Ethernet interfaces 34a and 34b are, for example, RJ45 interfaces. The Ethernet interfaces 34a and 34b are connected to the multiple Ethernet interface pin groups of the plug assembly 25 through the network transformer 33 and the plug assembly 32. Here, the circuit board 21 and the adapter board 31 are plugged in through the matching plug-in assembly 25 and the plug-in assembly 32, so that the user can connect the core components on the display control card 20, such as the programmable logic device 22 and the microcontroller 23. , Ethernet physical layer transceivers 24a and 24b are arranged on the circuit board 21 to form a core card, which is conducive to the personalized customization of the adapter board 31 and the modular design of the core card to better meet market demand. The core card formed by the circuit board 21 and the electrical components on it at this time can also be called a receiving card. In addition, arranging the network transformer 33 on the adapter board 31 instead of the receiving card can reduce the size of the core card or the receiving card, and reduce the cost and processing difficulty of the core card or the receiving card. In this embodiment, the display control card 20 is configured with the plug-in assembly as in the foregoing first embodiment, which can facilitate the standardization of the input and output interfaces of the display control card 20.

The third embodiment

As shown in FIG. 4, a display system 50 provided by the third embodiment of the present application, for example, includes: a display control card 51 and one or more LED light boards 55 connected to the display control card 51 (only one is shown in FIG. As an example). The display control card 51 is loaded and illuminates the LED lamp board 55 to perform screen display. The display control card 51 includes a receiving card 511 and an adapter board 513. The receiving card 511 includes, for example, the circuit board 21 in the second embodiment and electrical components thereon. The adapter board 513 may include, for example, the adapter board 31 in the second embodiment and the electrical components thereon. The receiving card 511 is provided with a connector assembly 5111, and the adapter board 513 is provided with a connector assembly 5131 having the same pin definition as the connector assembly 5111.

Generally, the adapter board 513 is also provided with one or more data output interfaces 5132 (only one is shown in FIG. 4 as an example). The data output interface 5132 is, for example, a connector, such as a 16-pin or 26-pin header or socket, which can be connected to the LED light board 55 through a flexible flat cable. The data output interface 5132 is connected to the multiple first data output pin groups, multiple second data output pin groups, and display control signal output pin groups of the connector component 5111 of the receiving card 51 through the connector component 5131 to obtain the desired output The display data (RGB) and the corresponding display control signal (Ctrl) are displayed to light up the LED light board 55 and perform screen display. It is worth mentioning here that a signal driving circuit (not shown in FIG. 4) may also be provided on the adapter board 513. The data output interface 5132 is connected to the plug-in assembly 5131 through a signal driving circuit. The signal driving circuit is used for signal enhancement of RGB data and display control signal (Ctrl). The signal driving circuit includes, for example, a signal driver chip, and its model may be 74HC245, for example. The signal driving circuit may include only one signal driver chip, or may include multiple signal driving chips, which can be determined according to the actual requirements of the circuit, and the embodiment of the present application is not limited thereto.

The LED light board 55 further includes a light board input interface 551, for example. The light board input interface 551 is plugged together with the data output interface 5132, for example, to obtain display data (RGB) and corresponding display control signals (Ctrl). Here, the LED light board 55 typically also includes an LED driving chip and a row decoding chip. The LED driver chip obtains RGB display data and some signals of the display control signal (Ctrl) from the light board input interface, such as OE, LAT, etc., and the row decoder chip obtains another part of the display control signal (Ctrl) from the light board input interface 551, for example A～E, the column driver chip and the row decoder chip cooperate with each other to realize the picture display. The LED driving chip and the row decoding chip can be common commercially available chips, which will not be repeated here.

Fourth embodiment

As shown in FIG. 5, a display system 40 provided by the fourth embodiment of the present application. The display system 40 of this embodiment is improved on the basis of the display system 50 in the third embodiment, and its basic structure is roughly the same. The difference is that, except for the display data (RGB) and the display control signal (Ctrl) In addition to the transmission, the SPI interface pins are defined for the function expansion pin group of the plug-in components on the receiving card, and non-volatile memory (such as FLASH memory) is added to the LED light board. A signal drive circuit and a multi-channel selection circuit are added to the light board to realize the backup of the LED light board correction coefficient and related configuration parameters, and the readback of the LED light board correction coefficient and related configuration parameters during replacement. The similarities with the foregoing embodiment will not be repeated.

Specifically, as shown in FIG. 5, the display system 40 includes, for example, a display control card 41 and an LED light board 45 connected to the display control card 41. The display control card 41 includes a receiving card 411 and a transfer board 413. The receiving card 41 is provided with a plug-in assembly 4111 and a programmable logic device 4112. The plug-in assembly 4111 is, for example, the plug-in assembly of the aforementioned second embodiment. The adapter board 413 is provided with a plug assembly 4131 and a plurality of data output interfaces 4132 connected to the plug assembly 4131. The plug-in component 4131 is, for example, a plug-in component with the same pin definition as the plug-in component 4111.

Further, the function extension pin group of the connector JH1 (please refer to Figure 1 and Table 1) of the connector component 4111 on the receiving card 41 includes the lamp board memory serial clock signal pin (SPI_CLK), the lamp board memory serial Interface chip select signal pin (SPI_CS), light board memory storage data input pin (SPI_MOSI), light board memory storage data output pin (SPI_MISO), and at least one light board memory control interface pin ((HUB_CODE, including HUB_CODE0, HUB_CODE1...). Light board memory serial clock signal pin (SPI_CLK), light board memory serial interface chip select signal pin (SPI_CS), light board memory storage data input pin (SPI_MOSI), light board memory storage The data output pin (SPI_MISO) and at least one lamp board memory control interface pin ((HUB_CODE) are respectively connected to the programmable logic device 4112 on the receiving card 411. Among them, the lamp board memory serial clock signal pin (SPI_CLK), The lamp board memory serial interface chip select signal pin (SPI_CS), the lamp board memory storage data input pin (SPI_MOSI) and the lamp board memory storage data output pin (SPI_MISO) can be collectively referred to as SPI interface pins.

The adapter board 413 is also provided with a signal drive circuit 4133 and a multiplexer circuit 4134. The signal driving circuit 4133 is connected between the connector assembly 4131 and the multiple data output interfaces 4132, and is connected to the lamp panel memory serial clock signal pin (SPI_CLK) of the connector assembly 4111 through the connector assembly 4131, and the lamp panel memory stores data Input pin (SPI_MOSI). The multiplexer circuit 4134 is connected between the signal drive circuit 4133 and the connector assembly 4131, and is connected to at least one lamp board memory control interface pin (HUB_CODE) of the connector assembly 4111 of the receiving card 411 through the connector assembly 4131, and the lamp board Memory serial interface chip selection signal pin (SPI_CS), light board memory storage data output pin (SPI_MISO). The multiple selection circuit 4134 is connected to the signal driving circuit 4133 to transmit the light board memory serial interface chip selection signal pin (SPI_CS) and the light board memory storage data output pin (SPI_MISO). The signal driving circuit 4133 includes, for example, a signal driving chip with a model number of 74HC245, which is used for SPI interface signal enhancement. The multiplexer circuit 4134 includes, for example, a multiplexer with a model number of 74HC4052, the number of which can of course be set according to actual needs, and other multiplexers with the same function can also be used to build the multiplexer circuit 4134.

The LED light board 45 includes a non-volatile memory 452 and a signal driving circuit 453. The signal driving circuit 453 is connected between the non-volatile memory 452 and the light panel input interface 451, and the light panel input interface 451 is connected to the corresponding data output interface 4132. The non-volatile memory 452 is, for example, a FLASH memory whose model is W25Q80. The signal driving circuit 453 includes, for example, a signal driving chip with a model number of 74HC245, which is used for SPI interface signal enhancement. Therefore, the non-volatile memory 452 is connected to the light board memory serial clock signal pin (SPI_CLK) and the light board of the plug-in assembly 4111 of the receiving card 411 through the signal driving circuit 453, the light board input interface 451, and the adapter board 413. Memory serial interface chip selection signal pin (SPI_CS), light board memory storage data input pin (SPI_MOSI), light board memory storage data output pin (SPI_MISO).

In this way, when the data of the non-volatile memory 432 in the LED light board 45 needs to be read and written, the receiving card 411 selects and connects to the multiple selection circuit 4134 through the signal of at least one light board memory control interface pin (HUB_CODE) To the LED light board 45 of one data output interface 4132 of the multiple data output interfaces 4132, and then realize the data in the non-volatile memory 452 of the LED light board 45 through communication with the LED light board 45 through the SPI interface signal Read and write. Therefore, the correction coefficients of the LED light board 45 and other related parameters such as configuration parameters can be backed up to the non-volatile memory 452 to avoid data loss of the correction coefficients and related configuration parameters of the LED light board 45 when the receiving card is replaced. . In addition, when the LED light board is replaced, the receiving card 41 can obtain the correction coefficient and related configuration parameters of the replaced LED light board from the non-volatile memory on the replaced LED light board, without the need to work through the screen configuration again. Configuring the replaced LED light board improves the efficiency of LED light board replacement and configuration, and improves product quality and user experience.

When multiple data output interfaces 4132 are connected to multiple LED light boards 45, the receiving card 411 can also select and connect to multiple data in sequence according to at least one light board memory control interface pin (HUB_CODE) signal and the multiplex circuit 4134. The multiple LED light boards corresponding to the data output interface 4132 of the output interface 4132 and need to read and write data, and then the selected multiple LEDs are realized through the transmission of the SPI interface signal with the selected multiple LED light boards 45 respectively Read and write data in the non-volatile memory 452 of the light board 45. Refer to FIG. 6, which is a specific example of the display system 40 provided in this embodiment. In addition, the signal driver circuit of the LED light board 45 may also include, for example, a resistor divider circuit for converting, for example, a 5V SPI interface signal into a 3.3V SPI interface signal and providing a 3.3V SPI interface signal to the FLASH memory.

Fifth embodiment

As shown in FIG. 7, a display system 60 provided by the fifth embodiment of the present application. Specifically, the display system 60 includes a display control card 61, an LED light board 65 and an LED light board 67. The display control card 61 can be, for example, the display control card in the third embodiment of the present application, and the display control card 61 includes a receiving card 611 and an adapter board 613. The LED light board 65 adopts the LED light board in the third embodiment of the present application. The LED light board 65 is connected to the display control card 61. The LED light board 67 and the LED light board 65 are cascaded. The LED light board 67 may be, for example, an LED light board having the same circuit configuration as the LED light board 65.

The receiving card 611 is provided with a plug-in component 6111 and a programmable logic device 6112 connected to the plug-in component 6111. The function expansion pin group of the connector JH1 (see Figure 1 and Table 1 above) on the connector assembly 6111 includes: lamp board memory serial clock signal pin (SPI_CLK), lamp board memory serial interface chip selection signal pin (SPI_CS), light board memory storage data input pin (SPI_MOSI), light board memory storage data output pin (SPI_MISO), shift register data signal pin (H164_CSD), shift register clock signal pin (H164_CLK), and At least one lamp board memory control interface pin (HUB_CODE). Lamp board memory serial clock signal pin (SPI_CLK), lamp board memory serial interface chip select signal pin (SPI_CS), lamp board memory storage data input pin (SPI_MOSI), and lamp board memory storage data output pin (SPI_MISO) ) Are collectively referred to as SPI interface signals. Lamp board memory serial clock signal pin (SPI_CLK), lamp board memory serial interface chip select signal pin (SPI_CS), lamp board memory storage data input pin (SPI_MOSI), lamp board memory storage data output pin (SPI_MISO) ), the shift register data signal pin (H164_CSD), the shift register clock signal pin (H164_CLK), and at least one lamp board memory control interface pin (HUB_CODE) are respectively connected to the programmable logic device 6112.

The adapter board 613 is provided with a plug-in assembly 6131, a plurality of data output interfaces 6132, a signal driving circuit 6133, and a multiple selection circuit 6134. The connector assembly 6131 and the connector assembly 6111 have the same pin definitions. The signal driving circuit 6133 is connected between the plug-in component 6131 and the multiple data output interfaces 6132, and is connected to the light board memory serial clock signal pin (SPI_CLK) and the light board memory string of the plug-in component 6111 through the plug-in component 6131. Row interface chip selection signal pin (SPI_CS), light board memory storage data input pin (SPI_MOSI), and shift register clock signal pin (H164_CLK). The multiplexer circuit 6134 is connected between the plug-in component 6131 and the signal drive circuit 6133, and is connected to the light board memory storage data output pin (SPI_MISO) of the plug-in component 6111 through the plug-in component 6131, and the shift register data signal guide. Pin (H164_CSD) and at least one lamp board memory control interface pin (HUB_CODE). The multiplexer circuit 6134 is connected to the signal driving circuit 6133 to transmit the light board memory storage data output signal (SPI_MISO) and the shift register data signal (H164_CSD). The signal driving circuit 6133 includes, for example, a signal driving chip with a model number of 74HC245, which is used to enhance the SPI interface signal, H164_CSD and H164_CLK signals. The multiplexer circuit 6134 includes, for example, a 16-to-1 analog switch with a model number of 74HC4067, which can enable one of the 16 channels to be selected according to the HUB_CODE signal.

The LED light board 65 includes a light board input interface 651, a non-volatile memory 652, a signal driving circuit 653, a shift register 654, and a light board output interface 655. The signal driving circuit 653 is connected between the light panel input interface 651 and the non-volatile memory 652. The shift register 654 is connected to the light board input interface 651 and the signal driving circuit 653. The signal driving circuit 653 is also connected to the light board output interface 655. Specifically, as shown in FIG. 8, the signal driving circuit 653 includes, for example, a first-level power supply driver, such as a 5V power supply driver 6531, a resistor divider circuit 6532, and a second-level power supply driver, such as a 3.3V power supply driver 6533. The resistor divider circuit 6532 is connected between the 5V power supply driver 6531 and the 3.3V power supply driver 6533. The 5V power supply driver 6531 is connected to the light panel input interface 655, the shift register 654, and the light panel output interface 655. The 3.3V power supply driver 6533 is connected to the shift register 654 and the non-volatile memory 652. The 5V power supply driver 6531 is, for example, the model 74HC245 Signal driver chip, used for SPI interface signal, H164_CSD and H164_CLK signal enhancement. The resistance voltage divider circuit 6532 divides the 5V SPI interface signal output by the 5V power supply driver 6531 into resistance voltage and then outputs the 3.3V SPI interface signal to the 3.3V power supply driver 6533. The 3.3V power supply driver 6533 is also a signal driver chip with the model number 74HC245, for example , Used to enhance the SPI interface signal. The model of the shift register 654 is 74HC164, for example. The non-volatile memory 652 is, for example, a FLASH memory, which can be used to back up data of the LED light board 65 such as correction coefficients, configuration parameters, and the like.

The LED light board 67 is connected to the light board output interface 655 of the LED light board 65 to form a cascade connection. The LED light board 67 and the LED light board 65 transmit SPI interface signals, H164_CSD and H164_CLK signals to implement data reading and writing in the non-volatile memory of the LED light board 67.

Refer to FIG. 9, which is a specific example of the display system 60 provided in this embodiment. The light board input interface 651 is connected to the data output interface 6132 of the adapter board 613 through a flat cable to transmit SPI interface signals. The receiving card 611 selects the LED light board 65 for data reading and writing through at least one light board memory control interface pin (HUB_CODE) and the multiple selection circuit 6134, and then sends the signal to the signal drive circuit through H164_CSD, H164_CLK signals and shift register 654 653 sends an enable signal to make the signal driving circuit 653 transmit the SPI interface signal to realize the reading and writing of data in the non-volatile memory 652 of the LED light board 65. Specifically, the light board input interface 651 is connected to the data output interface 6132 of the adapter board 613 for transmitting SPI interface signals, for example, through a flat cable. The 5V power supply driver 6531 obtains the H164_CLK and SPI interface signals from the light board input interface 651, and after enhancement, outputs the 5V SPI interface signal to the resistor divider circuit and outputs the enhanced H164_CLK signal to the shift register 654. The shift register 654 obtains H164_CSD from the light panel input interface 651 and combines the enhanced H164_CLK signal obtained from the 5V power supply driver 6531 to provide an enable signal to the 3.3V power supply driver 6533. The resistor divider circuit 6532 may, for example, use a suitable resistor to convert the 5V SPI interface signal from the 5V power supply driver 6531 into a 3.3V SPI interface signal and provide the 3.3V power supply driver 6533 with the 3.3V SPI interface signal. The 3.3V power supply driver 6533 receives the enable signal from the shift register 654 and the 3.3V SPI interface signal from the resistor divider circuit 6532 to read and write data to the nonvolatile memory 652.

At the same time, the shift register 654 provides the shifted H164_CSD signal to the 5V power supply driver 6531. The 5V power supply driver 6531 will also obtain the H164_CLK and SPI interface signals from the light panel input interface 651 and the shifted signals provided by the shift register 654 The latter H164_CSD signal is enhanced and sent to the light board output interface 655 for data reading and writing in the non-volatile memory of the cascaded LED light board 67. The reading and writing process is the same as that of the LED light board 65. That is, the data read in the non-volatile memory of the cascaded LED light board is realized by the enable signal provided by the shift register 654 and H164_CSD and H164_CLK.

In this way, data backup of the correction coefficients and configuration parameters of the LED light board 65 and the LED light board 67 can be completed in an orderly manner, so as to avoid the loss of the correction coefficients and LED light board related parameters caused by the replacement of the receiving card 611. In addition, when the LED light board is replaced, the receiving card 611 can read the correction coefficients and related parameters of the replaced LED light board from the non-volatile memory on the replaced LED light board, without the need to reconfigure the working pair. Configuration of the replaced LED light board improves the efficiency of LED light board replacement and configuration, and improves product quality and user experience.

When multiple data output interfaces 6132 are connected to multiple LED light boards 65 that need to read and write data in a one-to-one correspondence, the receiving card 611 can receive at least one light board memory control interface pin (HUB_CODE) through the multiplexer circuit 6134. ) Signal sequentially selects multiple LED light boards 65 that need to read and write data, and then provide H164_CSD and H164_CLK signals to the shift register 654 of the selected LED light board 65 and realize the non-volatile memory 652 through the SPI interface signal Data read and write operations. The present embodiment may include a function expansion pin set, for example, five light board memory control interface pin (HUB_CODE0, HUB_CODE1, ..., HUB_CODE4 ), thus a total of ²⁵ through the data output interface 32 is connected to the 6132 pairs 32 The LED light board 65 on the data output interface 6132 and the LED light board 67 cascaded to the LED light board 65 perform data reading and writing.

Sixth embodiment

As shown in FIG. 10, a display system 70 provided by the sixth embodiment of the present application. The display system 70 in this embodiment is roughly the same as the display system 50 in the third embodiment. The difference is that the function expansion pin group of the plug-in component of the receiving card defines the data transmission signal pin (UART_TX) of the smart module. ) And the smart module data receiving signal pin (UART_RX), the LED light board is also provided with a microcontroller (MCU), and communicates with the MCU on the LED light board to realize the LED light board or module Monitoring of temperature, voltage, cable communication status, and lamp point detection. The similarities with the foregoing third embodiment will not be repeated.

Specifically, as shown in FIG. 10, the display system 70 includes a display control card 71 and an LED light board 75. The LED light board 75 is connected to the display control card 71. The display control card 71 includes a receiving card 711 and a transfer board 713. The receiving card 711 is provided with a plug-in component 7111 and a programmable logic device 7112 connected to the plug-in component 7111. The function extension pin group of connector JH1 on the connector assembly 7111 includes: smart module data transmission signal pin (UART_TX), smart module data reception signal pin (UART_RX), and at least one lamp board memory control interface pin Feet (HUB_CODE). Smart module data transmission signal (UART_TX) and smart module data reception signal (UART_RX) are collectively referred to as smart module data signal (UART). The smart module data sending signal pin (UART_TX) and the smart module data receiving signal pin (UART_RX) are respectively connected to the programmable logic device 7112.

The adapter board 713 is provided with a plug-in assembly 7131, a plurality of data output interfaces 7132, a signal driving circuit 7133, and a multiple selection circuit 7134. The connector assembly 7131 is connected to the connector assembly 7111 of the receiving card 711. The multiplexer circuit 7133 is connected between the connector assembly 7121 and the signal driving circuit 7133. The multiple data output interfaces 7132 are respectively connected to the signal driving circuit 7133. The plug-in component 7131 and the plug-in component 7111 have the same pin definitions. The signal driving circuit 7133 includes, for example, a signal driving chip with a model number of 74HC245, which is used to enhance the smart module data signal (UART). The multiplexer circuit 7134 includes, for example, an analog multiplexer with a model number of 74HC4052 and an analog multiplexer with a model number of 74HC4051. The data output interface 7132 is connected to the smart module data sending signal pin (UART_TX) and the smart module data receiving signal pin (UART_RX) of the plug assembly 7111 through the signal driving circuit 7133, the multiple rotation circuit 7134, and the plug assembly 7131.

As shown in FIG. 10, the LED light board 75 includes a light board input interface 751, a signal driving circuit 752, a microcontroller 753, and a non-volatile memory 754. The signal driving circuit 752 is connected between the light board input interface 751 and the microcontroller 753. The non-volatile memory 754 is connected to the microcontroller 753. The non-volatile memory 754 is, for example, a FLASH memory. The monitoring data such as the temperature and voltage of the LED light board 75 itself can be stored in the non-volatile memory 754. In addition, the correction coefficients and configuration parameters of the LED light board 75 can also be backed up on the non-volatile memory 754, which can avoid the loss of the correction coefficients and related parameters of the LED light board when the receiving card 711 is replaced. In addition, when the LED light board is replaced, the receiving card 711 can read the correction coefficient and related parameters of the replaced LED light board from the non-volatile memory on the replaced LED light board, without the need to work through the screen configuration again. The screen configuration of the replaced LED light board improves the efficiency of LED light board replacement and configuration, and improves product quality and user experience.

The light board input interface 751 is connected to the data output interface 7132 of the adapter board 713 through a flat cable, for example, to transmit a smart module data signal (UART). The signal driving circuit 752 includes, for example, a signal driving chip with a model number of 74HC245, which is used to enhance the smart module data signal (UART). The microcontroller 753 is, for example, an MCU, and its model is, for example, STM32F030C8. The microcontroller 753 communicates with the receiving card 711 through the UART signal.

When multiple data output interfaces 7132 are connected to multiple LED light boards 75 that need to communicate in a one-to-one correspondence, the receiving card 711 can receive at least one light board memory control interface pin (HUB_CODE) signal through the multiplexer circuit 7134 Select multiple LED light boards 75 that need to read and write data in turn, and then communicate with multiple LED light boards 75 through the smart module data sending signal pin (UART_TX) and smart module data receiving signal pin (UART_RX) example.

Further, as shown in FIG. 10b, the LED light board 75 is also provided with a voltage and temperature collection circuit 755. The voltage and temperature acquisition circuit 155 is connected to the microcontroller 753 to input the collected signals such as voltage and temperature to the microcontroller 753. In this way, the microcontroller 753 can monitor the temperature and voltage of the LED light board 75 without other peripherals. In addition, the receiving card 711 communicates with the microcontroller 753 through the UART signal, so that the receiving card 711 can obtain the monitoring data of the voltage and temperature of the LED light board 75 from the microcontroller 753 to understand the working status of the LED light board 75. Furthermore, the LED light board 75 further includes an LED driving circuit 756. The LED driving circuit 756 is connected to the light board input interface 751, and is used to obtain RGB data and display control signal data from the receiving card 711 from the data output interface 7132 through the light board input interface 751 to light the LED light board. The LED drive circuit and chip of the LED, will not be repeated here. The microcontroller 753 is connected to the LED driving circuit 756 and obtains RGB data from the LED driving circuit 756 to realize the detection of the LED dead pixels. In this way, the LED light board with the microcontroller 753 can reduce the size of the monitoring unit to have a monitoring function. Therefore, the user does not need to install a separate monitoring card, saving LED space. Furthermore, the LED light board 75 may further include a light board output interface 757. The light board output interface 757 is connected to the signal driving circuit 752 and the LED driving circuit 756. The light board output interface 757 is used to cascade the next level of LED light boards to transmit display data (RGB), display control signals (Ctrl) and UART signals to the next level of LED light boards, so as to achieve the next level of LED light boards. Monitoring.

The present embodiment may include a function expansion pin set, for example, five light board memory control interface pins (HUB_CODE0, HUB_CODE1, ..., HUB_CODE4 ), thus the gate ²⁵ can be successively a total of 32 one-connected LED lamp board 75 for data reading and writing. Refer to FIG. 11, which is a specific example of the display system 70 provided in this embodiment.

Seventh embodiment

As shown in FIG. 12, a display system 80 provided by the seventh embodiment of the present application. The display system 80 in this embodiment is basically the same as the display system 50 in the foregoing third embodiment. The difference is that the plug-in components of the receiving card define power detection signal pins (POWER_STA1, POWER_STA2), and the two power supplies are respectively Connect the power detection signal pin through the plug-in component on the transfer board. The same adapter board (HUB board) is connected with two power supplies (called main power supply and backup power supply), and the two power supplies supply power to the display control card and the LED light board at the same time. In addition, the receiving card can obtain the working status of the two power supplies through the power detection signal pins. When one of the power supplies fails, for example, a status light or other methods can be used to remind the user to take corresponding processing. The similarities with the foregoing third embodiment will not be repeated.

As shown in FIG. 12, the display system 80 includes a display control card 81 and an LED light board 85. The display control card 81 includes a receiving card 811 and a transfer board 813. The receiving card 811 may be the receiving card in the foregoing second embodiment. The receiving card 811 has a plug-in component 8111 and a programmable logic device 8112. The connector assembly 8111 adopts the connector assembly including connectors JH1 and JH2 in the first embodiment. The function expansion pin group on the connector JH1 includes multiple power detection signal pins, such as two power detection signal pins POWER_STA1 and POWER_STA2, which are used to detect the status of the two power supplies. The two power detection signal pins are connected to the programmable logic device 8112 respectively. The adapter board 813 is provided with a connector assembly 8131 having the same pin definition as the connector assembly 8111. The adapter board 813 is also provided with a data output interface 8132 connected to the LED light board 85. Preferably, a signal driving circuit 8133 is further provided between the plug-in component 8131 and the data output interface 8132 to enhance the display data (RGB) and the display control signal (Ctrl). The signal driving circuit 8133 includes, for example, a signal driving chip with a model number of 74HC245.

In addition, the display system 80 may also include multiple power supplies. Here, two power supplies, namely power supplies 87 and 89, are taken as an example for description. The power supplies 87 and 89 are respectively connected to the adapter board 813 to supply power. The power supplies 87 and 89 here can be AC power supplies or DC power supplies. When the power sources 87 and 89 are AC power sources, an AC-to-DC power supply circuit is provided on the adapter board to convert the AC power input by the AC power source into the required DC power; when the power source is a DC power source, the adapter board is equipped with a DC-to- DC power supply circuit to convert the DC power input by the DC power supply into the required DC power.

In addition to supplying power to the display system 80, the power supplies 87 and 89 are respectively connected to the programmable logic device of the receiving card 811 through the plug-in component 8131 and the two power detection signal pins (POWER_STA1, POWER_STA2) on the plug-in component 8111. 8112, in this way, the programmable logic device 8112 can be used to detect whether the working status of the power supplies 87 and 89 is normal, and even display the working status of the two power supplies 87 and 89, so that the user can intuitively learn the status of the two power supplies 87 and 89 Work status and deal with it according to the actual situation. For example, when the power supply 87 fails, the display system 80 is only powered by the power supply 89. After the programmable logic device 8112 of the receiving card 811 obtains the fault status of the power supply 87 through the power detection signal pin, such as POWER_STA1, it can even use the status light The form reminds the user that the power supply 87 is faulty, and the user can repair or replace the power supply 87 to ensure the normal operation of the display system 80. It is worth mentioning here that when the display system 50 includes multiple power supplies, only multiple power supply detection signal pins corresponding to the multiple power supplies need to be defined on the plug-in component 8111 to realize the operation of multiple power supplies. Status detection.

Eighth embodiment

As shown in FIG. 13, a display system 90 provided by the eighth embodiment of the present application. The architecture of the display system 90 of this embodiment is basically the same as that of the foregoing third embodiment. The difference is that the same adapter board (HUB board) is connected to two receiving cards one by one through two plug-in components. The receiving card simultaneously receives the image data and performs the same processing on the image data, but at the same time, only one receiving card outputs display data (RGB) and display control signals (Ctrl) to the LED light board. The two receiving cards are connected through the pins of the two plug-in components for timing communication to mutually confirm whether their respective working states are normal. When one of the receiving cards fails to work normally, the other receiving card immediately responds and outputs display data (RGB) and display control signal data (Ctrl) to the LED light board to ensure the normal display of the LED light board. In addition, the similarities with the foregoing third embodiment will not be repeated.

Specifically, as shown in FIG. 15, the display system 90 includes a display control card 91 and an LED light board 95. The display control card 91 includes a receiving card 911, a receiving card 915, and a transfer board 913. The receiving card 911 and the receiving card 915 are connected to the adapter board 913 respectively.

For example, the receiving card 911 adopts the receiving card in the second embodiment, which includes a plug-in component 9111 and a programmable logic device 9113 connected to the plug-in component 9111. The receiving card 915 may be the same receiving card as the receiving card 911 and includes a plug-in component 9151 and a programmable logic device 9153 connecting the plug-in component 9151. Of course, the receiving card 915 may also be a circuit board card that is different from the receiving card 911 but has a receiving card function or an image data processing function.

The adapter board 913 includes, for example, plug-in components 9131 and 9132, Ethernet interfaces 9134 and 9135, and network transformers 9136 and 9137. The plug-in components 9131 and 9132 are, for example, plug-in components having the same pin definition as the plug-in component 9111 and the plug-in component 9151, respectively. The plug assembly 9131 is connected to the plug assembly 9111, and the plug assembly 9132 is connected to the plug assembly 9151. The network transformer 9136 is connected between the Ethernet interface 9134 and the connector 9131, and the network transformer 9137 is connected between the connector 9132 and the Ethernet interface 9135. The Ethernet interfaces 9134 and 9135 are, for example, RJ45 network ports. In this way, the receiving cards 911 and 915 are respectively connected to the same image data source through the Ethernet interface 9134 and the Ethernet interface 9135 to obtain the same image input data. The receiving cards 911 and 915 are respectively connected to the LED light board 95 through the adapter board 913 for image display.

In addition, the function expansion pin groups of the plug-in component 9111 and the plug-in component 9151 respectively include a dual-card connection signal pin (MS_DATA) and a dual-card identification signal pin (MS_ID). The dual-card connection signal pin (MS_DATA) and the dual-card identification signal pin (MS_ID) of the plug-in assembly 9111 are respectively connected to the programmable logic device 9113 of the receiving card 911. The dual card connection signal pin (MS_DATA) and dual card identification signal pin (MS_ID) of the plug-in assembly 9151 are respectively connected to the programmable logic device 9153 of the receiving card 915.

The dual-card identification signal pin (MS_ID) of the plug-in component 9111 on the receiving card 911 (also called the main card) is connected to the external high-level VCC through the plug-in component 9131 on the adapter board 913, where VCC is, for example, 3.3 The level of V. The dual-card identification signal pin (MS_ID) of the plug assembly 9151 on the receiving card 915 (also called the slave card) is grounded through the plug assembly 9132 on the adapter board 913. The dual card connection signal pin (MS_DATA) of the plug assembly 9111 on the receiving card 911 is connected to the dual card connection signal pin of the plug assembly 9151 of the receiving card 915 through the plug assembly 9131 on the adapter board 913. Pin (MS_DATA) for communication between the master card and the slave card.

In normal operation, the receiving cards 911 and 915 simultaneously receive the image data source and perform the same data processing on the image input data. At the same time, the receiving cards 911 and 915 communicate through the dual-card connection signal pins (MS_DATA), for example, periodically sending status signals to confirm whether the mutual working status is normal. The working status includes, for example, whether the image data input of the receiving card is normal and the image of the receiving card is normal. Is the data output normal? When working normally, only one of the receiving cards outputs display data (RGB) and display control signals (Ctrl) to the LED light board 95. Typically, the receiving card 911 (main card) outputs display data (RGB) and display control signals (Ctrl) to the LED light board 95. If the receiving card 911 (master card) fails, the receiving card 915 (slave card) learns the failure status of the receiving card 911 (master card) through the dual-card connection signal pin (MS_DATA) or fails to receive the card within a predetermined time, for example, 10 milliseconds. When the receiving card 911 (master card) responds, the receiving card 915 (slave card) will immediately take over the work of the receiving card 911 (master card) and output display data (RGB) and display control signals (Ctrl) to the LED light board 95, To ensure that the LED light board 95 works normally. As a result, in a high-reliability application environment, this single adapter board (HUB board) connects two receiving cards at the same time and expands the function extension pins of the defined plug-in components, so that the two receiving cards can be identified It communicates with timing to obtain the working status of the two. When one of the receiving cards fails, the other receiving card immediately takes over the failed receiving card to output data to ensure the normal operation of the LED light board, which improves product reliability.

Further, as shown in FIG. 15, a test button 9133 is also provided on the adapter board 913. The test button 9133 connects the receiving card 911 and the receiving card 915. Specifically, the test button 9133 is connected to the receiving card 911 through the test key input signal pin (TEST_INPUT_KEY) of the plug-in component 9111, and the test button 9133 is connected to the receiving card 915 through the test key input signal pin of the plug-in component 9151 to realize the receiving card Simultaneous testing of 911 and receiving card 915.

Furthermore, the adapter board 913 is also provided with status light interfaces, such as two status light interfaces (not shown in FIG. 15). The two status light interfaces are connected to the connector assembly 9111 and the connector via the connector assemblies 9131 and 9132, respectively. The status light signal pin (STA_LED-) of the plug-in component 9151. The two status light interfaces are used to respectively connect two status lights to receive the working status of the card 911 and the card 915. In this way, the user can learn and monitor the working status of the receiving card 911 and the receiving card 915 more intuitively and directly.

In addition, it can be understood that the foregoing embodiments are only exemplary descriptions of the present application, and the technical solutions of the various embodiments can be combined arbitrarily, provided that the technical features do not conflict, the structure does not contradict, and does not violate the purpose of the invention of the present application. For use with.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into 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, and may be in 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, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

The above-mentioned integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The above-mentioned software functional unit is stored in a storage medium and includes several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute some steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical disks, etc., which can store program codes Medium.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (15)

1. A connector assembly, characterized in that it comprises a first connector and a second connector arranged in pairs, the first connector comprising a power pin group, a function expansion pin group and a plurality of first data output leads Pin group, the function expansion pin group is located between the plurality of first data output pin groups and the power pin group in the length direction of the first connector; the second connector includes a display A control signal output pin group, a multi-channel Ethernet interface pin group, and a plurality of second data output pin groups, the display control signal output pin group is located in the multiple in the length direction of the second connector Between the second data output pin group and the multiple Ethernet interface pin group;

   A pair of ground pins is provided between two adjacent first data output pin groups, and a pair of ground pins is provided between two adjacent second data output pin groups; each of the first The data output pin group includes M groups of data output pins; each of the second data output pin groups includes N groups of data output pins, where M and N are respectively positive and even numbers and M is greater than N.
2. The connector assembly of claim 1, wherein the multiple Ethernet interface pin groups are continuously arranged on both sides of the second connector, and the multiple Ethernet interface pin groups are A pair of grounding pins is arranged between the display control signal output pin groups.
3. The connector assembly of claim 2, wherein a pair of ground pins is provided between the function expansion pin group and the plurality of first data output pin groups, and the function expansion pin group A free connection pin is arranged between the power pin group and the power pin group.
4. The connector assembly of claim 3, wherein:

   The first connector includes eighty-four pins and in the length direction of the first connector, they are: two ground pins, eighteen data output pins, two ground pins, eighteen pins. Two data output pins, two ground pins, eighteen data output pins, two ground pins, sixteen function extension pins, two empty connection pins, and four power supply pins;

   The second connector includes eighty-four pins, and in the length direction of the second connector, they are: two ground pins, sixteen Ethernet interface pins, two ground pins, one Test button input signal pin, one status light signal pin, two ground pins, ten display control signal output pins, two ground pins, twelve data output pins, two ground pins, ten Two data output pins, two ground pins, twelve data output pins, two ground pins, and six data output pins.
5. The plug-in assembly according to claim 4, wherein the function expansion pin group includes five lamp board memory control interface pins, one lamp board memory serial clock signal pin, and one lamp board memory serial Interface chip select signal pin, a shift register data signal pin, a shift register clock signal pin, a light board memory storage data input pin or a smart module data sending signal pin, a light board memory storage Data output pin or a smart module data receiving signal pin, a dual-card connection signal pin, a dual-card identity identification signal pin, and two power detection signal pins.
6. A display control card, which is characterized by comprising: a circuit board, a programmable logic device, a microcontroller, an Ethernet physical layer transceiver, and a first plug-in component; the first plug-in component is as claimed in claim 1- 5 any one of the plug-in components; the programmable logic device, the microcontroller, the Ethernet physical layer transceiver, and the first plug-in components are arranged on the circuit board; the A microcontroller is connected to the programmable logic device and the power pin group of the first connector, and the Ethernet physical layer transceiver is connected to the programmable logic device and the first connector assembly Between the multiple Ethernet interface pin groups of the second connector, the programmable logic device is connected to the power pin group and the power pin group of the first connector of the first connector assembly. The function expansion pin group and the plurality of first data output pin groups and the plurality of second data output pin groups of the second connector of the first connector assembly and the display control Signal output pin group.
7. The display control card according to claim 6, wherein the display control card further comprises an adapter board, and the adapter board is provided with a second connector with the same pin definition as the connector assembly. The adapter board is connected to the first plug-in component through the second plug-in component; the adapter board is also provided with a network transformer and an Ethernet interface connected to the network transformer, the Ethernet The interface is connected to the multiple Ethernet interface pin group of the first plug-in assembly through the network transformer and the second plug-in assembly.
8. A display system, comprising: a display control card and an LED light board as claimed in claim 7; the adapter board of the display control card is provided with a data output interface, and the data output interface is connected The second connector assembly, the data output interface is connected to the plurality of first data output pin groups of the first connector assembly, and all of the second connector via the second connector assembly The plurality of second data output pin groups and the display control signal output pin group; the LED light board is provided with a light board input interface, and the LED light board is connected to the data through the light board input interface Output Interface.
9. The display system according to claim 8, wherein the function expansion pin group includes lamp panel memory serial clock signal pins, lamp panel memory serial interface chip select signal pins, and lamp panel memory storage data input Pin, light board memory storage data output pin, and at least one light board memory control interface pin, the light board memory serial clock signal pin, the light board memory serial interface chip select signal pin, the The light board memory storage data input pin, the light board memory storage data output pin, and the at least one light board memory control interface pin are respectively connected to the programmable logic device;

   A first signal driving circuit and a first multiple selection circuit are provided on the adapter board, and the first signal driving circuit is connected between the second plug-in assembly and the data output interface and passes through the The second plug-in component is connected to the serial clock signal pin of the light board memory and the data input pin of the light board memory of the first plug-in component; the first multiple selection circuit is connected to the Between the first signal driving circuit and the second connector assembly and connected to the first connector assembly through the second connector assembly, the chip select signal pin and the serial interface of the lamp board memory The light board memory storage data output pin, and the at least one light board memory control interface pin;

   The LED light board includes a non-volatile memory and a second signal drive circuit, the second signal drive circuit is connected between the non-volatile memory and the light board input interface, the light board input interface Connect the data output interface.
10. The display system according to claim 8, wherein the function expansion pin group includes lamp panel memory serial clock signal pins, lamp panel memory serial interface chip select signal pins, and lamp panel memory storage data input Pin, light board memory storage data output pin, shift register data signal pin, shift register clock signal pin, and at least one light board memory control interface pin, the light board memory serial clock signal pin, The light board memory serial interface chip select signal pin, the light board memory storage data input pin, the light board memory storage data output pin, the shift register data signal pin, the shift The register clock signal pin and the at least one lamp board memory control interface pin are respectively connected to the programmable logic device;

    A third signal drive circuit and a second multiple selection circuit are provided on the adapter board, and the third signal drive circuit is connected between the second plug-in assembly and the data output interface and passes through the The second connector assembly is connected to the lamp panel memory serial clock signal pin, the lamp panel memory serial interface chip select signal pin, and the lamp panel memory storage data input pin of the first connector assembly. Pin, the clock signal pin of the shift register; the second multiplexer circuit is connected between the third signal drive circuit and the second connector assembly, and is connected through the second connector assembly The light board memory storage data output pin, the shift register data signal pin and the at least one light board memory control interface pin to the first plug-in assembly;

    The LED light board includes a fourth signal drive circuit, a shift register, a second non-volatile memory, and a light board output interface. The fourth signal drive circuit is connected to the light board input interface and the second non-volatile memory. A lossy memory, the shift register, and the light board output interface, where the shift register is connected to the light board input interface;

    The display system also includes a second LED light board, which includes a second light board input interface, a fifth signal drive circuit, a second shift register, and a third nonvolatile memory. The five-signal driving circuit is connected to the second light board input interface, the third nonvolatile memory, and the second shift register, and the second shift register is connected to the second light board input interface, so The second light board input interface is connected to the light board output interface of the LED light board.
11. The display system of claim 10, wherein the fourth signal driving circuit comprises a first level power supply driver, a resistance voltage divider circuit, and a second level power supply driver, and the resistance voltage divider circuit is located in the Between the first level power supply driver and the second level driver, the shift register is connected to the first level power supply driver and the second level power supply driver, and the first level power supply drive circuit The light board input interface, the shift register, and the light board output interface are connected, and the second-level power supply driver is connected to the shift register and the second non-volatile memory.
12. 8. The display system according to claim 8, wherein the function expansion pin group includes a smart module data sending signal pin, a smart module data receiving signal pin, and at least one light board memory control interface pin; The smart module data sending signal pin, the smart module data receiving signal pin, and the at least one light board memory control interface pin are respectively connected to the programmable logic device;

    A sixth signal drive circuit and a third multiplexer circuit are provided on the adapter board, and the third multiplexer circuit is connected between the sixth signal drive circuit and the second connector assembly, and The at least one light board memory control interface pin of the first connector assembly is connected to the smart module data sending signal pin and the smart module data receiving signal pin through the second connector assembly ；

    The LED light board includes a seventh signal drive circuit, a third non-volatile memory, and a second microcontroller, and the seventh signal drive circuit is connected between the second microcontroller and the light board input interface. Meanwhile, the third non-volatile memory is connected to the second microcontroller, and the light board input interface is connected to the data output interface.
13. 8. The display system according to claim 8, wherein the function expansion pin group includes a plurality of power detection signal pins, and the plurality of power detection signal pins are respectively connected to the programmable logic device; The display system also includes a plurality of power supplies, and the plurality of power supplies are connected to the plurality of power detection signal pins of the first plug-in component one by one through the adapter board.
14. The display system of claim 8, wherein the display control card further comprises a second circuit board, and a second programmable logic device, a third microcontroller, and a second Ethernet physical layer transceiver and a third plug-in component, the third plug-in component is the plug-in component according to any one of claims 1-5; the third microcontroller is connected to the second The power pin group of the first connector of the programming logic device and the third connector assembly, and the second Ethernet physical layer transceiver is connected to the second programmable logic device and the first Between the multiple Ethernet interface pin groups of the second connector of the three-plug assembly, the programmable logic device is connected to the power supply of the first connector of the third plug-in assembly The pin group, the function expansion pin group, the plurality of first data output pin groups, the plurality of second data output pin groups of the second connector, and the display control signal output lead Foot set

    The adapter board is also provided with a fourth connector assembly having the same pin definition as the third connector assembly; the adapter board is connected to the third connector assembly through the fourth connector assembly The adapter board is also provided with a second Ethernet interface and a second network transformer, and the second Ethernet interface is connected to the third connector through the second network transformer and the fourth connector assembly The multiple Ethernet interface pin group of the component; the data output interface is connected to the first data output of the first connector of the third connector through the fourth connector A pin group, the plurality of second data output pin groups of the second connector, and the display control signal output pin group;

    The function expansion pin groups of the first plug-in assembly and the third plug-in assembly respectively include dual-card connection signal pins and dual-card identification signal pins; the first plug-in assembly The dual-card connection signal pin and the dual-card identity identification signal pin are respectively connected to the programmable logic device on the circuit board; the dual-card connection signal pin of the third plug-in assembly and the The dual-card identification signal pins are respectively connected to the programmable logic device on the second circuit board; the dual-card identification signal pins of the first plug-in assembly are connected to an external high level, the The dual card connection signal pin of the first connector assembly is connected to the dual card connection signal pin of the third connector assembly on the second circuit board through the adapter board; the second The dual-card identification signal pin of the third connector assembly on the circuit board is grounded.
15. The display system of claim 14, wherein the second connector of the first connector assembly and the second connector of the third connector assembly respectively include test key input signal pins; The adapter board is also provided with a test button, the test button is connected to the test button input signal pin of the first plug assembly through the second plug assembly; the test button passes through the fourth connector The plug-in component is connected to the test key input signal pin of the third plug-in component.

Images