CN109147649B - Display screen control card - Google Patents
Display screen control card Download PDFInfo
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- CN109147649B CN109147649B CN201710509234.2A CN201710509234A CN109147649B CN 109147649 B CN109147649 B CN 109147649B CN 201710509234 A CN201710509234 A CN 201710509234A CN 109147649 B CN109147649 B CN 109147649B
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- transmission interface
- signal transmission
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- Computer Hardware Design (AREA)
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- Controls And Circuits For Display Device (AREA)
Abstract
The embodiment of the invention discloses a display screen control card, which comprises a circuit board, and a first signal transmission interface, a second signal transmission interface, a third signal transmission interface and a fourth signal transmission interface which are arranged on the circuit board, wherein the first signal transmission interface, the second signal transmission interface, the third signal transmission interface and the fourth signal transmission interface are respectively arranged on four sides of the circuit board. Therefore, the connection between the adjacent display modules in the display screen does not need to be interconnected in a mode of extending the signal lines, the connection mode is simple, and the possibility of connection errors is reduced.
Description
Technical Field
The invention relates to the technical field of display control, in particular to a display screen control card.
Background
With the development of small-pitch LED display screens, LED display screens are increasingly used in the commercial field. In a traditional LED display screen control card, interfaces of gigabit ports RJ45 are commonly used to cascade among the control cards and are installed inside a box, and the box is connected with each other through a network cable.
As shown in fig. 1, fig. 1 is a schematic diagram of a connection method of a display screen control card in the prior art. The display screen control cards in the prior art are two gigabit network ports, one is connected with the other, and the LED boxes serving as display modules are connected through the cascade connection of the display screen control cards. In fig. 1, four display screen control cards correspond to four LED boxes. Because the LED box bodies are generally rectangular, the adoption of the display screen control card in the prior art can cause that the adjacent LED box bodies are interconnected in a mode of extending the network cable. This connection is complicated and has a high possibility of connection errors, and thus, a professional person is required to normally connect the terminals. In addition, as long as one of the two communication network ports of each display screen control card fails, the whole LED display screen system can be paralyzed, and the reliability of the whole LED display system is poor.
Disclosure of Invention
The embodiment of the invention provides a display screen control card, which solves the problems that adjacent display modules in a display screen need to be interconnected in a network cable extending mode, the connection mode is complex, and the possibility of connection errors is high.
In particular, embodiments of the present invention provide a display screen control card.
One technical scheme of the technical scheme has the following advantages or beneficial effects: the connection between adjacent display module for example LED box in the display screen need not carry out the interconnection through the mode of extension net twine, and the connected mode is simple, reduces the wrong possibility of connection.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a connection method of a control card of an LED display screen in the prior art;
fig. 2 is a schematic structural diagram of a control card of a display screen according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another display control card according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another display screen control card according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
First embodiment
Referring to fig. 2, fig. 2 is a schematic diagram of a display screen control card according to an embodiment of the present invention. This display screen control card includes:
the circuit board comprises a circuit board (not shown in the figure) and a first signal transmission interface 1, a second signal transmission interface 2, a third signal transmission interface 3 and a fourth signal transmission interface 4 which are arranged on the circuit board, wherein the first signal transmission interface 1, the second signal transmission interface 2, the third signal transmission interface 3 and the fourth signal transmission interface 4 are respectively arranged on four sides of the circuit board.
Further, on the basis of the above embodiment, the first signal transmission interface 1, the second signal transmission interface 2, the third signal transmission interface 3, and the fourth signal transmission interface 4 are all network ports such as gigabit network ports.
One technical scheme of the embodiment has the following advantages or beneficial effects: compared with the display screen control card in the prior art, the display screen control card provided by the embodiment of the invention comprises 4 gigabit network ports which respectively correspond to the display module, such as the upper direction, the lower direction, the left direction and the right direction of an LED box body, so that the LED box body is conveniently and directly connected with the adjacent LED box body no matter what direction the LED box body is positioned on the display screen, and the wiring is convenient.
Referring to fig. 3, fig. 3 is a schematic diagram of another display screen control card structure according to an embodiment of the present invention. This display screen control card still includes:
first plug connector 5, second plug connector 6, third plug connector 7 and fourth plug connector 8 all set up on the circuit board for connect the display element board for example LED lamp plate.
In this embodiment, the display screen control card is a receiving card applied to the LED display screen; the first signal transmission interface 1, the second signal transmission interface 2, the third signal transmission interface 3 and the fourth signal transmission interface 4 are adopted, so that the connection between the LED box bodies is facilitated, and the adjacent LED box bodies can be connected by adopting a short connector; in addition, adopt first plug connector 5, second plug connector 6, third plug connector 7 and fourth plug connector 8, can directly detain the LED lamp plate on plug connector 5-8, made things convenient for the inside LED lamp plate of box to connect for box thickness can the attenuation, satisfies the requirement of user to box thickness more easily. Again, from fig. 3 it can be found that: first plug connector 5, second plug connector 6, third plug connector 7 and fourth plug connector 8 are the rectangle and arrange to a plurality of LED lamp plates splice and form rectangle LED box.
Further, referring to fig. 4, fig. 4 is a schematic structural diagram of a display screen control card according to an embodiment of the present invention, where the display screen control card further includes:
a first network transformer 11, a second network transformer 21, a third network transformer 31, a fourth network transformer 41 arranged on the circuit board;
a first transceiver 12, a second transceiver 22, a third transceiver 32, a fourth transceiver 42, and a programmable logic device 50 disposed on a circuit board;
the first network transformer 11 and the first transceiver 12 are sequentially connected in series between the first signal transmission interface 1 and the programmable logic device 50; the second network transformer 21 and the second transceiver 22 are sequentially connected in series between the second signal transmission interface 2 and the programmable logic device 50; the third network transformer 31 and the third transceiver 32 are sequentially connected in series between the third signal transmission interface 3 and the programmable logic device 50; the fourth network transformer 41 and the fourth transceiver 42 are sequentially connected in series between the fourth signal transmission interface 4 and the programmable logic device 50.
Further, the first transceiver 12, the second transceiver 22, the third transceiver 32, and the fourth transceiver 42 are all connected to an ethernet physical layer transceiver, such as an AR8035 chip, and each ethernet physical layer transceiver is used to detect Link states of the first signal transmission interface 1, the second signal transmission interface 2, the third signal transmission interface 3, and the fourth signal transmission interface 4, that is, external connection states of each interface 1-4.
Preferably, the programmable logic Device 50 provided in the embodiment of the present invention may be an FPGA (field programmable Gate Array), a CPLD (Complex programmable logic Device), or the like.
Specifically, the ethernet physical layer transceiver detects differential input signals of the first signal transmission interface 1, the second signal transmission interface 2, the third signal transmission interface 3 and the fourth signal transmission interface 4 through the input clock frequency of the ethernet physical layer transceiver.
The connection mode, the working principle, and the signal detection method of the ethernet physical layer transceiver and the signal transmission interface, such as the network port, are prior art, and this embodiment is not described herein again.
Further, in the display screen control card provided in the embodiment of the present invention, the first network transformer 11 is configured to receive multiple first differential signals input by the first signal transmission interface 1 and send the multiple first differential signals to the first transceiver 12, so that the first transceiver 12 converts the multiple first differential signals into multiple first single-ended receiving signals and multiple first single-ended sending signals and processes the multiple first single-ended receiving signals and the multiple first single-ended sending signals by the programmable logic device 50;
the second network transformer 21 is configured to receive multiple second differential signals input by the second signal transmission interface 2 and send the multiple second differential signals to the second transceiver 22, so that the second transceiver 22 converts the multiple second differential signals into multiple second single-ended receiving signals and multiple second single-ended sending signals, and processes the multiple second single-ended receiving signals and the multiple second single-ended sending signals by the programmable logic device 50;
the third network transformer 31 is configured to receive multiple third differential signals input by the third signal transmission interface 3 and send the multiple third differential signals to the third transceiver 32, so that the third transceiver 32 converts the multiple third differential signals into multiple third single-ended receiving signals and multiple third single-ended sending signals, and processes the multiple third single-ended receiving signals and the multiple third single-ended sending signals by the programmable logic device 50;
the fourth network transformer 41 is configured to receive multiple fourth differential signals input by the fourth signal transmission interface 4 and send the multiple fourth differential signals to the fourth transceiver 42, so that the fourth transceiver 42 converts the multiple fourth differential signals into multiple fourth single-ended receiving signals and multiple fourth single-ended sending signals, and the multiple fourth single-ended receiving signals and the multiple fourth single-ended sending signals are processed by the programmable logic device 50.
The programmable logic device 50 is configured to select one signal transmission interface from the first signal transmission interface 1, the second signal transmission interface 2, the third signal transmission interface 3, and the fourth signal transmission interface 4 as a main transmission interface, mainly receive previous display control card data or forward cascade display control card packet data upwards, select another signal transmission interface as a sub transmission interface, and mainly send input image data downwards to the cascade display control card or forward the cascade display control card packet data upwards.
Further, in the display screen control card provided in the embodiment of the present invention, the primary transmission interface is, for example, a first signal transmission interface 1, and the secondary transmission interface is, for example, a second signal transmission interface 2; alternatively, the primary transmission interface is, for example, the second signal transmission interface 2, and the secondary transmission interface is, for example, the first signal transmission interface 1.
On the basis of the above embodiment, in the display screen control card provided in the embodiment of the present invention, the primary transmission interface is used for communication between the display screen control card and a first adjacent display screen control card, and the secondary transmission interface is used for communication between the display screen control card and a second adjacent display screen control card.
Specifically, on the basis of the above embodiment, the display screen control card provided in the embodiment of the present invention is further configured to receive, through the host transmission interface, first data sent by a first adjacent display screen control card, and send second data to the first adjacent display screen control card.
Specifically, on the basis of the above embodiment, the display screen control card provided in the embodiment of the present invention is further configured to send third data to a second adjacent display screen control card through the secondary transmission interface, and receive fourth data sent by the second adjacent display screen control card, where the first adjacent display screen control card, the display screen control card, and the second adjacent display screen control card are sequentially connected in series, that is, form a cascade, and are, for example, cascaded through a connector and spliced together to form an LED display screen.
Second embodiment
The present embodiment further describes the working principle of the display screen control card provided in the embodiment of the present invention on the basis of the first embodiment. On the basis of the above embodiment, if the ethernet physical layer transceiver detects that the differential input signals of the first signal transmission interface 1, the second signal transmission interface 2, the third signal transmission interface 3, and the fourth signal transmission interface 4 are all normal signals, then:
the first network transformer 11 receives the multiple first differential signals input by the first signal transmission interface 1 and sends the multiple first differential signals to the first transceiver 12, and the first transceiver 12 converts the multiple first differential signals into multiple first single-ended receiving signals and multiple first single-ended sending signals and then processes the multiple first single-ended receiving signals and the multiple first single-ended sending signals by the programmable logic device 50;
the second network transformer 21 receives the multiple second differential signals input by the second signal transmission interface 2 and sends the multiple second differential signals to the second transceiver 22, and the second transceiver 22 converts the multiple second differential signals into multiple second single-ended receiving signals and multiple second single-ended sending signals and then processes the multiple second single-ended receiving signals and the multiple second single-ended sending signals by the programmable logic device 50;
the third network transformer 31 receives the multiple third differential signals input by the third signal transmission interface 3 and sends the multiple third differential signals to the third transceiver 32, and the third transceiver 32 converts the multiple third differential signals into multiple third single-ended receiving signals and multiple third single-ended sending signals and then processes the multiple third single-ended receiving signals and the multiple third single-ended sending signals by the programmable logic device 50;
the fourth network transformer 41 receives the multiple fourth differential signals input by the fourth signal transmission interface 4 and sends the multiple fourth differential signals to the fourth transceiver 42, and the fourth transceiver 42 converts the multiple fourth differential signals into multiple fourth single-ended receiving signals and multiple fourth single-ended sending signals, and then the multiple fourth single-ended receiving signals and the multiple fourth single-ended sending signals are processed by the programmable logic device 50.
The programmable logic device 50 selects one signal transmission interface from the first signal transmission interface 1, the second signal transmission interface 2, the third signal transmission interface 3 and the fourth signal transmission interface 4 as a main transmission interface, and the other signal transmission interface as a sub transmission interface.
In the above embodiments, the transceiver may employ an AR8035 chip. The transceiver has the same working principle of transmitting and receiving signals, and the signal transmission directions are opposite. The display screen control card provided by the embodiment of the invention can realize the identification of four network port signals, but in the subsequent processing process, only two network ports are selected to be respectively used as a main transmission interface and a secondary transmission interface, so that the display, control and cascade connection of the LED display screen are realized.
In one embodiment provided by the present invention, the primary transmission interface is, for example, a first signal transmission interface 1, and the secondary transmission interface is, for example, a second signal transmission interface 2; alternatively, the primary transmission interface is, for example, the second signal transmission interface 2, and the secondary transmission interface is, for example, the first signal transmission interface 1.
In the embodiment provided by the present invention, when only one or two of the four signal transmission interfaces access a signal, the one or two signal transmission interfaces are used as valid signal transmission interfaces to execute subsequent operations; when three or four signal transmission interfaces access signals, the first two signal transmission interfaces are selected as effective signal transmission interfaces according to the serial number sequence of the signal transmission interfaces, or the effective signal transmission interfaces are designated according to a preset rule, and preferably, the control of the display screen control card on the four signal transmission interfaces can be realized through software and hardware protocols. In another embodiment of the present invention, the allocation of the primary transport interface and the secondary transport interface can be determined and controlled according to the characteristics of the input/output data packets.
Further, based on the above embodiment, specifically, if the ethernet physical layer transceiver detects that the differential input signals of the first signal transmission interface 1 and the second signal transmission interface 2 are normal signals, and the differential input signals of the third signal transmission interface 3 and the fourth signal transmission interface 4 are abnormal signals, then:
the first network transformer 11 receives the multiple first differential signals input by the first signal transmission interface 1 and sends the multiple first differential signals to the first transceiver 12, and the first transceiver 12 converts the multiple first differential signals into multiple first single-ended receiving signals and multiple first single-ended sending signals and then processes the multiple first single-ended receiving signals and the multiple first single-ended sending signals by the programmable logic device 50;
the second network transformer 21 receives the multiple second differential signals input by the second signal transmission interface 2 and sends the multiple second differential signals to the second transceiver 22, and the second transceiver 22 converts the multiple second differential signals into multiple second single-ended receiving signals and multiple second single-ended sending signals and then sends the multiple second single-ended receiving signals and the multiple second single-ended sending signals to the programmable logic device 50 for processing;
selecting a main transmission interface as a first signal transmission interface 1 and a secondary transmission interface as a second signal transmission interface 2; or, the main transmission interface is selected as the second signal transmission interface 2, and the sub transmission interface is selected as the first signal transmission interface 1.
On the basis of the above embodiment, the primary transmission interface is used for communication between the display screen control card and the first adjacent display screen control card, and the secondary transmission interface is used for communication between the display screen control card and the second adjacent display screen control card.
Further, the communication between the display screen control card and the first adjacent display screen control card may specifically be: the display screen control card receives first data sent by the first adjacent display screen control card, and the display screen control card sends second data to the first adjacent display screen control card.
Wherein, the communication between display screen control card and the second adjacent display screen control card specifically can be: the display screen control card sends third data to a second adjacent display screen control card, and the display screen control card receives fourth data sent by the second adjacent display screen control card, wherein the first adjacent display screen control card, the display screen control card and the second adjacent display screen control card are sequentially connected in series, namely are sequentially cascaded, and for example, the first adjacent display screen control card, the display screen control card and the second adjacent display screen control card are cascaded through a connector and spliced together to form the LED display screen.
In the embodiment provided by the invention, the main transmission interface main network port can be used for receiving the control card data of the previous display screen or forwarding the loopback data of the control card of the cascaded display screen upwards; the secondary transmission interface may be used to send input image data down to the cascading display screen control card or forward packet data back up.
By adopting the signal transmission interface provided by the embodiment of the invention, the connection between the adjacent display modules such as the LED boxes in the display screen does not need to be interconnected in a mode of extending signal lines such as network lines, the connection mode is simple, the possibility of connection errors is reduced, and the thickness of the LED boxes can be reduced to a certain extent by configuring a plurality of connectors, so that more user requirements are met.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a division of one logic function, and an actual implementation may have another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A display screen control card, comprising:
the circuit board comprises a circuit board and a first signal transmission interface, a second signal transmission interface, a third signal transmission interface and a fourth signal transmission interface which are arranged on the circuit board, wherein the first signal transmission interface, the second signal transmission interface, the third signal transmission interface and the fourth signal transmission interface are respectively arranged on four sides of the circuit board;
wherein, the display screen control card still includes: the first plug connector, the second plug connector, the third plug connector and the fourth plug connector are all arranged on the circuit board and are used for connecting the display unit board;
the display screen control card further comprises:
the first network transformer, the second network transformer, the third network transformer and the fourth network transformer are arranged on the circuit board;
a first transceiver, a second transceiver, a third transceiver, a fourth transceiver and a programmable logic device disposed on the circuit board;
the first network transformer and the first transceiver are sequentially connected in series between the first signal transmission interface and the programmable logic device; the second network transformer and the second transceiver are sequentially connected in series between the second signal transmission interface and the programmable logic device; the third network transformer and the third transceiver are sequentially connected in series between the third signal transmission interface and the programmable logic device; the fourth network transformer and the fourth transceiver are sequentially connected in series between the fourth signal transmission interface and the programmable logic device.
2. The display screen control card of claim 1, wherein the first signal transmission interface, the second signal transmission interface, the third signal transmission interface, and the fourth signal transmission interface are gigabit ports.
3. The display screen control card of claim 1, wherein the first plug connector, the second plug connector, the third plug connector and the fourth plug connector are arranged on the circuit board in a rectangular shape.
4. The display screen control card of claim 1, wherein the first transceiver, the second transceiver, the third transceiver, and the fourth transceiver are ethernet physical layer transceivers, and are respectively configured to detect external connection states of the first signal transmission interface, the second signal transmission interface, the third signal transmission interface, and the fourth signal transmission interface.
5. The display screen control card of claim 1, wherein the first network transformer is configured to receive a plurality of first differential signals input by the first signal transmission interface and send the plurality of first differential signals to the first transceiver, so that the first transceiver converts the plurality of first differential signals into a plurality of first single-ended receiving signals and a plurality of first single-ended sending signals and processes the plurality of first single-ended sending signals by the programmable logic device;
the second network transformer is used for receiving the multiple second differential signals input by the second signal transmission interface and sending the multiple second differential signals to the second transceiver, so that the second transceiver converts the multiple second differential signals into multiple second single-ended receiving signals and multiple second single-ended sending signals and processes the multiple second single-ended receiving signals and the multiple second single-ended sending signals by the programmable logic device;
the third network transformer is used for receiving a plurality of paths of third differential signals input by the third signal transmission interface and sending the third differential signals to the third transceiver, so that the third transceiver converts the plurality of paths of third differential signals into a plurality of paths of third single-ended receiving signals and a plurality of paths of third single-ended sending signals and processes the third single-ended receiving signals and the third single-ended sending signals by the programmable logic device;
the fourth network transformer is configured to receive multiple fourth differential signals input by the fourth signal transmission interface and send the multiple fourth differential signals to the fourth transceiver, so that the fourth transceiver converts the multiple fourth differential signals into multiple fourth single-ended receiving signals and multiple fourth single-ended sending signals, and the multiple fourth single-ended receiving signals and the multiple fourth single-ended sending signals are processed by the programmable logic device;
the programmable logic device is configured to select one signal transmission interface from the first signal transmission interface, the second signal transmission interface, the third signal transmission interface, and the fourth signal transmission interface as a primary transmission interface, and use the other signal transmission interface as a secondary transmission interface.
6. The display screen control card of claim 5, wherein the primary transmission interface is used for communication between the display screen control card and a first adjacent display screen control card, the secondary transmission interface is used for communication between the display screen control card and a second adjacent display screen control card, and the first adjacent display screen control card, the display screen control card and the second adjacent display screen control card are sequentially cascaded.
7. The display screen control card of claim 6, wherein the first adjacent display screen control card, the display screen control card, and the second adjacent display screen control card are connected to each other by a connector and are spliced together.
8. The display screen control card of claim 1, wherein the display screen control card is a receiver card for an LED display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509234.2A CN109147649B (en) | 2017-06-28 | 2017-06-28 | Display screen control card |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509234.2A CN109147649B (en) | 2017-06-28 | 2017-06-28 | Display screen control card |
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| CN109147649A CN109147649A (en) | 2019-01-04 |
| CN109147649B true CN109147649B (en) | 2020-10-23 |
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| CN201710509234.2A Active CN109147649B (en) | 2017-06-28 | 2017-06-28 | Display screen control card |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021016918A1 (en) * | 2019-07-31 | 2021-02-04 | 西安诺瓦星云科技股份有限公司 | Receiving card and display control card assembly |
| CN112397011B (en) * | 2019-07-31 | 2022-05-20 | 西安诺瓦星云科技股份有限公司 | LED display screen, LED display system and display box |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203573621U (en) * | 2013-11-11 | 2014-04-30 | 西安诺瓦电子科技有限公司 | LED lamp panel and LED display screen |
| CN204215707U (en) * | 2014-11-25 | 2015-03-18 | 珠海格力电器股份有限公司 | Display and household electrical appliance |
| CN105810106B (en) * | 2014-12-29 | 2018-08-17 | 西安诺瓦电子科技有限公司 | LED display unit and its localization method and positioning device and reception card |
| CN204904803U (en) * | 2015-08-11 | 2015-12-23 | 西安诺瓦电子科技有限公司 | Scanning card, LED lamp plate, switching card and LED display screen control system |
| CN105573704B (en) * | 2015-12-23 | 2019-10-29 | 西安诺瓦星云科技股份有限公司 | LED display screen configuration method |
| CN106463098B (en) * | 2016-07-26 | 2018-11-23 | 北京小米移动软件有限公司 | Show equipment and applied to the mainboard in display equipment |
| CN106899812A (en) * | 2017-03-09 | 2017-06-27 | 成都莱特互动科技有限公司 | The collocation method and system of a kind of LED display |
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