CN109493791B

CN109493791B - LED display screen and debugging method thereof

Info

Publication number: CN109493791B
Application number: CN201910060200.9A
Authority: CN
Inventors: 徐鹏; 韩强; 孙鹏
Original assignee: Qingdao Keruisi Photoelectric Technology Co ltd
Current assignee: Qingdao Keruisi Photoelectric Technology Co ltd
Priority date: 2019-01-22
Filing date: 2019-01-22
Publication date: 2023-06-09
Anticipated expiration: 2039-01-22
Also published as: CN109493791A

Abstract

The invention provides an LED display screen and a debugging method thereof, which relate to the field of LED screens and comprise a control card, an information identification unit and a debugger, wherein the signal receiving device is used for receiving external network signals, the control card comprises a four-bit dial switch, external network data equipment, a signal switching button, a debugging interface, an on-board interface, the debugger, a first unit board identification module, a second unit board identification module, a display screen unit board, a unit board input interface and a unit board output interface, the on-board interface is connected with the first unit board identification module through the unit board input interface, the first unit board identification module is connected with the second unit board input end through the unit board output interface, and the player transmits video signals and stores local contents through USB3.0, so that signal transmission between any computer and the display screen and independent playing of the player are realized. In addition, the device is compatible with a Type-C Thunderbolt interface, an HDMI interface is reserved, and HDMI signals and USB can be used in a switching mode.

Description

LED display screen and debugging method thereof

Technical Field

The invention relates to the field of LED screens, in particular to an LED display screen and a debugging method thereof.

Background

The LED display screen is a high-tech product integrating optoelectronic technology, microelectronic technology, computer technology and video technology, and is widely applied to society due to the advantages of high brightness, small power consumption, large size, impact resistance and the like. In recent years, along with the gradual reduction of the price of the LED display screen, the improvement of color and display effect makes the application place of the LED display screen wider and wider.

The LED display screen is a product with stronger comprehensiveness. There are many links in the middle from production, installation, debugging, after sales. Each link has room for improvement and optimization.

The existing LED unit board housing sleeve member is made of ABS engineering plastics. The thickness is about 1.5-2.5mm depending on the cell plate size. In ABS, B refers to the property of high elasticity and toughness, so that when the thickness is 1.5-2.5mm, the housing has a certain deformation, which is an undesirable result in the LED unit board housing kit. The current common practice is to make structural adjustments and to make transverse and vertical staggered reinforcing ribs on a plane to improve strength.

However, the LED unit board may generate heat during operation. In summer, temperatures reach sixty degrees, which are prone to deformation, and most cell plates on the market have aspect ratios of 3:2, 4:3, 5:4, which are nearly square. Structurally, the more square-shaped the more firm. In terms of size, the long side size is 120mm, 160mm, 180mm and 240mm. Due to the limitations of the existing materials and structures, it is difficult to make large-size LED unit boards with the ratio of 16:9.

Under the existing conditions, large-size unit plates are required to be manufactured, and the large-size unit plates are usually realized by adopting a metal box body: for the LED lamp bead spacing of more than 2.0mm, the box body adopts a process of profile welding; the box body is processed by adopting a mode of die-casting aluminum, a lathe and a milling machine, and then the smaller unit plates are fixed on the metal box body to form a larger unit, but the problem of higher assembly cost exists.

Currently, most computer monitors and notebooks have a ratio of 16:9 for all televisions, which is a golden ratio that is in line with human vision. Video material, picture material, PPT, etc. matching with the above are very popular. Therefore, the LED screen needs to be 16:9, so that the best fit can be achieved. However, the current cell plates are not so flexible to spell up a 16:9 screen, as we will analyze in detail below;

first, we take a 4:3 cell plate as an example. As shown in fig. 1, to obtain a 16:9 screen, only 3 rows and 4 columns, 6 rows and 8 columns, 9 rows and 12 columns, etc. … are satisfied, so that it can be seen that the minimum span in the horizontal direction is the width of 4 unit panels, and the height in the vertical direction is 3 unit panels. The difficulty that the construction site can make a screen which is very consistent with the expected width and height is larger by combining the experience in construction;

secondly, from the aspects of debugging and after-sale, LED unit board manufacturers, control system manufacturers, distributors and engineering manufacturers are numerous, and the technical level and the service quality are uneven. The LED display screen is complex in installation and debugging, difficult in after-sale maintenance, great in damage to the benefits of users and limited in development of the whole LED display screen field.

At present, after a new control card is replaced by the LED display screen due to technical reasons of industry, debugging personnel need to use a computer to send control card data again to ensure that the LED display screen is normally used, so that the maintenance process is long, the technical requirements on maintenance personnel are high, and further the maintenance cost is increased;

the current synchronous playing system of the LED display screen is mainly divided into a computer, a synchronous player and signal receiving equipment according to the trend of signals, wherein the computer and the player are two independent equipment, and the communication between the computer and the player still needs to transmit signals through a video cable, so that the following problems exist: 1. the larger the screen of the display screen is, the larger the screen is, so that the resolution of the display screen cannot be met by a single video interface, but due to the limit of the number of the display card interfaces, the complete display of the display screen picture can be completed only by externally connecting splicing equipment, but the splicing equipment has large volume and high price, cannot be widely popularized, and is more suitable for the development of the LED display screen industry by realizing a proper automatic debugging technology; 2. the video interface that usually uses has DVI, HDMI etc. often is used in on the desktop computer display card, moreover, because integrated display card performance reason, the display screen can produce the picture tearing when playing fast video, consequently, the broadcast of display screen still relies on independent display card, leads to the cost to rise to, desktop computer's volume is great, experiences relatively poor in the aspect of portability.

Disclosure of Invention

The embodiment of the invention provides an LED display screen and a debugging method thereof, wherein a player transmits video signals and stores local contents through USB3.0, so that signal transmission between any computer and the display screen and independent playing of the player are realized. In addition, the device is compatible with a Type-C Thunderbolt interface, an HDMI interface is reserved, and HDMI signals and USB can be used in a switching mode. The parts are mutually connected and cooperated, so that the purposes of simplicity in installation, convenience in debugging, rapidness in maintenance and reduction in technical threshold are realized, and the development of industry is promoted.

In order to achieve the above purpose, the technical scheme provided by the invention is as follows:

an LED display screen comprises a control card, an information identification unit and a debugger,

a signal receiving device for receiving an external network signal;

the control card comprises a four-bit dial switch, external network data equipment, a signal switching button, a debugging interface, an on-board interface, a debugger, a first unit board identification module, a second unit board identification module, a display screen unit board, a unit board input interface and a unit board output interface;

the four-bit dial switch is used for setting the position of the current control card through dial debugging, wherein the four-bit dial switch comprises an upper dial switch and a lower dial switch, the upper dial switch is used for controlling the longitudinal coordinate of the control card, the lower dial switch is used for controlling the transverse coordinate of the control card,

the external network data equipment is used for receiving the network data converted by the external equipment, the control card is used for converting the network data into data which can be identified by the first unit board identification module and the second unit board identification module, and the data is transmitted to the unit board input interface through the on-board interface;

the control card is connected with the debugging interface, and the control card sends out an instruction to the debugger and is used for detecting the number of the on-board interfaces;

the information identification unit is connected with the first unit board identification module through the unit board input interface, and the first unit board identification module is connected with the second unit board input end through the unit board output interface;

the debugger comprises a first data interface, a resume key, a debugging key, a storage key, an indicator light and a second data interface;

the first data interface is used for storing scanning data and a wiring mode to the debugger through an external interface, the second data interface is connected with the control card debugging interface through an FC-10P flat cable, the recovery key is used for debugging parameters of a screen, and the debugging key is used for sending prestored scanning data to the control card;

and a player is also arranged in the display screen unit board and is connected in series between the unit board input interface and the control card.

Preferably, each of the on-board interfaces is laterally connected to one of the first unit boards.

Preferably, the four-bit dial switch can acquire the coordinate position of the control card, and the longitudinal point number and the transverse point number controlled by the control card are obtained through the integrated calculation of the number of the identification modules and the scanning data.

Preferably, the signal receiving device can be connected with a USB3.0 port of a computer, namely, corresponding computer video information can be obtained through the USB3.0 port, and Windows, mac OS, android and Chrome OS are supported.

Preferably, the player can receive the video signal and then perform internal data conversion, convert the video signal into network data, and transmit the network data to the signal receiving device through more than five types of network cables and more than five network cables or optical fibers, and the signal receiving device converts the network data into a signal identifiable by a display screen through internal data conversion, and is connected with the display screen unit board through a control card debugging interface, so that output and display of pictures can be realized.

Preferably, the player may transmit video signals through USB-2.0, USB-3.0, HDMI, type-C Thunderbolt interface.

Preferably, the data input interface of the player is adapted to the USB-2.0 data output interface.

Preferably, four communication interfaces are arranged behind the back of the player, each interface can control 65 ten thousand pixel points, and the total of the four interfaces can control 230 ten thousand pixel points.

In addition, the invention also provides a debugging method of the LED display screen, which comprises the following steps:

(1) Accessing the network data converted by the external network equipment into the control card;

(2) Setting the position of the current control card through the four-bit dial switch;

(3) The control card converts network data into data which can be identified by the first unit board or the second unit board, and transmits the data to the first unit board identification module or the second unit board identification module through the on-board interface;

(4) After the control card is connected with the debugger, the debugging sends out instructions, the number of the on-board interface identification modules is detected, the control card on-board interface is connected with the first unit board identification module through the input end of the unit board, the module is connected with the input end of the second unit board through the output port of the unit board, the second unit board identification module is detected, and the second unit board repeats the operation;

(5) The network data is returned to the control card through the original path;

(6) After the control card obtains the number of the unit boards connected with the on-board interface, the longitudinal point number controlled by the interface can be calculated according to the longitudinal point number of the unit boards in the scanning data, and as each on-board interface of the control card is transversely connected with only one unit board, the transverse point number controlled by the on-board interface can be calculated through the detection of the scanning data and the identification module;

(7) The control card coordinates are obtained through the dial switch, and then the longitudinal point number and the transverse point number controlled by the control card are obtained through the integration calculation of the number of the identification modules and the scanning data, so that the whole process of automatic debugging is realized.

Compared with the prior art, the invention has at least the following advantages and beneficial effects:

1. the unit board size of 16:9 in the invention is to form a 16:9 screen, the vertical direction and the horizontal direction are not limited by the number, 1 block, 2 blocks, 3 blocks and 4 blocks, and any number of rows and columns can be used.

2. The automatic debugging method can greatly reduce the technical threshold of debugging in the display screen industry, can lead the display screen to be popularized in a larger range, is gradually converted from commercial use to civil use, and can promote the overall development of the industry.

3. The application of the technology makes debugging and maintenance more convenient, reduces construction period delay caused by technical reasons, further reduces cost, improves efficiency and promotes good development of enterprises.

4. The player adopts the USB3.0 Type female interface, and the Type-C Thunderbolt interface equipment supporting video output can also be connected with the player through a data line to carry out content transmission, so that the player is more oriented to equipment, portability and practicability are higher, and the communication rate of the USB3.0 interface is 5000Mbps and is consistent with the HDMI1.2 transmission rate, so that the stability of data transmission is ensured.

5. The player saves the video interface of the traditional player, so that the practicability of the player is not limited any more.

6. The USB interface of the computer or the USB interface expanded through the HUB can be connected with the player, so that seamless splicing of a large display screen is simple and portable.

7. The player is provided with 4 rear communication interfaces, each interface can control 65 ten thousand pixel points, and the total 4 network ports can control 230 ten thousand pixel points.

The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.

Drawings

FIG. 1 is a schematic view of a 4:3 cell plate of the present invention;

FIG. 2 is a schematic illustration of a 16:9 cell plate of the present invention;

FIG. 3 is a schematic diagram of a debugger according to the present invention;

FIG. 4 is a schematic diagram of an automatic debugging process according to the present invention;

FIG. 5 is a schematic diagram illustrating the transmission of a cell board and a control card according to the present invention;

FIG. 6 is a schematic diagram of the external structure of the player according to the present invention;

fig. 7 is a schematic diagram of the external structure of the player according to the present invention.

Reference numerals: 1. a display screen unit board; 2. a control card; 3. a four-bit dial switch; 4. an external network data device; 5. a signal switching button; 6. a debug interface; 8. a debugger; 801. a first data interface; 802. a second data interface; 803. a debug key; 804. a storage key; 805. an indicator light; 9. a first cell board identification module; 11. a cell board input interface; 12. a unit board output interface; 13. FC-10P flat cable.

Detailed Description

The following further description of the present invention is provided in connection with the accompanying drawings and examples of the structure of the present invention, which are presented to facilitate the understanding and application of the present invention and are not intended to limit the scope of the invention.

According to the drawings, the invention discloses an LED display screen, which comprises a control card 2, an information identification unit and a debugger 8,

a signal receiving device for receiving an external network signal;

the control card 2 comprises a four-bit dial switch 3, external network data equipment 4, a signal switching button 5, a debugging interface 6, an on-board interface, a debugger 8, a first unit board identification module 9, a second unit board identification module, a display screen unit board 1, a unit board input interface 11 and a unit board output interface 12;

the four-bit dial switch 3 is used for setting the position of the current control card 2 through dial debugging, wherein the four-bit dial switch 3 comprises an upper dial switch and a lower dial switch, the upper dial switch is used for controlling the longitudinal coordinate of the control card 2, the lower dial switch is used for controlling the transverse coordinate of the control card 2,

the external network data device 4 is configured to receive the network data converted by the external device, and the control card 2 is configured to convert the network data into data that can be identified by the first unit board identification module 9 and the second unit board identification module, and transmit the data to the unit board input interface 11 through the on-board interface;

the control card 2 is connected with the debugging interface 6, and the control card 2 sends out an instruction to the debugger 8 for detecting the number of the on-board interfaces;

the information identification unit is characterized in that the on-board interface is connected with the first unit board identification module 9 through a unit board input interface 11, and the first unit board identification module 9 is connected with the second unit board input end through a unit board output interface 12;

a debugger 8, wherein the debugger 8 comprises a first data interface 801, a resume key, a debug key 803, a storage key 804, an indicator 805 and a second data interface 802;

the first data interface 801 is used for storing scan data and a routing manner to the debugger 8 through an external interface, the second data interface 802 is connected with the control card 2 debugging interface 6 through an FC-10P bus 13, the resume key is used for debugging parameters of a screen, and the debug key 803 is used for sending pre-stored scan data to the control card 2;

a player is further arranged in the display screen unit board 1 and is connected in series between the unit board input interface 11 and the control card 2; the player receives the video signal and then carries out internal data conversion, converts the video signal into network data, transmits the network data to the receiving card through more than five types of network cables or optical fibers, converts the network data into signals which can be identified by the display screen through internal data conversion, and is connected with the display screen unit board 1 through a data flat cable, so that the output and display of pictures can be realized.

Preferably, the four-bit dial switch 3 can acquire the coordinate position of the control card 2, and obtains the longitudinal point number and the transverse point number controlled by the control card 2 through the integration calculation of the number of the identification modules and the scanning data; the display screen debugging parameters mainly comprise two parts: one is scan data, which contains all parameters of the size of the cell board, the chip, the data trend, etc. The other is the wiring data, namely the number of unit board points controlled by the single Zhang Kongzhi card 2 and the positional relationship among the plurality of control cards 2.

Preferably, the player can receive the video signal and then perform internal data conversion, convert the video signal into network data, and transmit the network data to the signal receiving device through more than five types of network cables and more than five network cables or optical fibers, and the signal receiving device converts the network data into a signal identifiable by a display screen through internal data conversion, and is connected with the display screen unit board 1 through the debugging interface 6 of the control card 2, so that output and display of pictures can be realized.

A debugging method of LED display screen comprises the following steps,

(1) The network data converted by the external network equipment is accessed into the control card 2;

(2) Setting the position of the current control card 2 through the four-bit dial switch 3; the black part is a dialing code, namely 1 on the upper part, the white part is a dialing code, namely 0 from the dialing code to the lower part, the longitudinal coordinate of the control card 2 is 0100, the control card 2 is 2-ary, the control card is converted into 10-ary 4, the transverse coordinate is 0110, and the control card 2 is converted into 10-ary 6, so that the control card 2 is positioned in the 4 th row and the 6 th row (4, 6) of all the control cards 2 of the display screen, and the dialing switch only provides parameters for the debugger 8 and can not influence the normal debugging process.

(3) The control card 2 converts the network data into data which can be identified by the first unit board or the second unit board, and transmits the data to the first unit board identification module 9 or the second unit board identification module through the on-board interface, meanwhile, the unit board input interface 11 is connected with the first unit board identification module 9, and the first unit board identification module 9 reads the model of the control card 2 and finds out the corresponding number;

(4) After the control card 2 is connected with the debugger 8, the debugging sends out instructions, the number of the on-board interface identification modules is detected, the on-board interface of the control card 2 is connected with the first unit board identification module 9 through the input end of the unit board, the module is connected with the input end of the second unit board through the output port of the unit board, the second unit board identification module is detected, and the second unit board repeats the operation;

(5) The network data is transmitted back to the control card 2 through the original path;

(6) After the control card 2 knows the number of the unit boards connected with the on-board interface, the longitudinal point number controlled by the interface can be calculated according to the longitudinal point number of the unit boards in the scanning data, and as each on-board interface of the control card 2 is transversely connected with only one unit board, the transverse point number controlled by the on-board interface can be calculated through the scanning data and the detection of the identification module;

(7) The coordinates of the control card 2 are obtained through a dial switch, and then the longitudinal and transverse points controlled by the control card 2 are obtained through the integration calculation of the number of the identification modules and the scanning data, so that the whole process of automatic debugging is realized.

The experimental method of the invention has the following characteristics:

according to the LED display screen and the debugging method thereof, the debugger 8 is provided with two data ports in total, one is a USB port, a computer can be connected to the debugger 8 for data updating, and scanning data and wiring modes can be stored into the debugger 8 through computer software; the other data interface is a ox horn seat of a pin header, the interface can be connected with the debugging interface 6 of the control card 2 through an FC-P flat cable 13, after the debugger 8 is connected with the control card 2, as shown in fig. 2, if the internal data is matched with the data of the information identification module, the indicator lamp 805 will light a red lamp and flash slowly, at this time, if two groups of data of scanning and wiring are stored in the debugger 8, the parameter debugging work of the screen can be completed by clicking a resume key.

In the debugging step, firstly, the relevant parameters of a conventional unit board and a control card 2 are prestored in a first unit board identification module 9 and a second unit board identification module, and are numbered one by one, when the modules are connected with the unit boards, the model is read back, the corresponding numbers are found, after the control card 2 is connected with a debugger 8, the debugging sends out instructions, the number of the on-board interface identification modules is detected, the on-board interface of the control card 2 is connected with the first unit board identification module 9 through the input end of the unit board, the module is connected with the input end of the second unit board through the output port of the unit board, the second unit board is detected, the operation is repeated, and the parameters are written into the control card 2 according to the combination mode of the current screen, so that the automatic debugging is realized.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The utility model provides a LED display screen, includes control card, information identification unit and debugger, its characterized in that: a signal receiving device for receiving an external network signal;

the information identification unit is characterized in that the on-board interface is connected with a first unit board identification module through a unit board input interface, and the first unit board identification module is connected with the input end of the second unit board identification module through a unit board output interface;

2. The LED display screen of claim 1, wherein: each on-board interface is transversely connected with one first unit board.

3. The LED display screen of claim 1, wherein: the four-bit dial switch can acquire the coordinate position of the control card, and the longitudinal point number and the transverse point number controlled by the control card are obtained through the integration calculation of the number of the identification modules and the scanning data.

4. The LED display screen of claim 1, wherein: the signal receiving equipment can be connected with a USB3.0 port of a computer, namely corresponding computer video information can be obtained through the USB3.0 port, and Windows, mac OS, android and Chrome OS are supported.

5. The LED display screen of claim 1, wherein: the player can receive video signals and then perform internal data conversion, the video signals are converted into network data, the network data are transmitted to the signal receiving equipment through more than five types of network cables or optical fibers, the signal receiving equipment converts the network data into signals which can be identified by a display screen through internal data conversion, and the signals are connected with the display screen unit board through a control card debugging interface, so that output and display of pictures can be realized.

6. The LED display screen of claim 5, wherein: the player may transmit video signals over USB-2.0, USB-3.0, HDMI, type-C Thunderbolt interface.

7. The LED display screen of claim 6, wherein: the data input interface of the player is adapted to the data output interface of the USB-2.0.

8. The LED display screen of claim 5, wherein: four communication interfaces are arranged behind the back of the player, each interface can control 65 ten thousand pixel points, and the total of the four interfaces can control 230 ten thousand pixel points.

9. The debugging method of the LED display screen, which is applied to the LED display screen of claim 8, is characterized by comprising the following steps:

(3) The control card converts the network data into data which can be identified by the first unit board or the second unit board, and transmits the data to the first unit board identification module or the second unit board identification module through the on-board interface, meanwhile, the unit board input interface is connected with the first unit board identification module, and the first unit board identification module reads the model of the control card and finds out the corresponding number;

(5) The network data is transmitted back to the control card through the original path;

(7) And acquiring the coordinates of the control card through a dial switch, and then obtaining the longitudinal and transverse points controlled by the control card through the integrated calculation of the number of the identification modules and the scanning data, thereby realizing the whole process of automatic debugging.