CN111462683A - L ED display screen and control method thereof - Google Patents
L ED display screen and control method thereof Download PDFInfo
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- CN111462683A CN111462683A CN202010395455.3A CN202010395455A CN111462683A CN 111462683 A CN111462683 A CN 111462683A CN 202010395455 A CN202010395455 A CN 202010395455A CN 111462683 A CN111462683 A CN 111462683A
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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Abstract
The invention discloses an L ED display screen and a control method thereof, which are used for solving the technical problem of large signal interference in a L ED display screen in the prior art, wherein the L ED display screen comprises a plurality of L ED sub-screens, the L ED sub-screens are arranged in an array mode, each L ED sub-screen is provided with wireless modules facing to four different directions, the wireless modules are arranged at the splicing positions of the L ED sub-screens and are used for short-distance wireless communication, and two communication modules at the splicing positions of the L ED sub-screens are automatically connected in a matching mode.
Description
Technical Field
The invention relates to the field of display control, in particular to an L ED display screen and a control method thereof.
Background
L ED (L light Emitting Diode) display screen is widely used indoors and outdoors as a display device.
Generally, an L ED display screen is formed by splicing a plurality of L ED sub-screens (generally called L ED display boxes), wherein each L ED sub-screen comprises at least 1 input and 1 output RJ45 ports for data transmission between L ED module panels, and RJ45 ports between adjacent L ED sub-screens are cascaded through a network cable to realize data transmission.
Referring to fig. 1, a structural schematic diagram of a L ED screen composed of 4x 4L ED sub-screens 1 is shown, a 1080P video source is divided into 4 parts, which are respectively connected to a L4 ED display screen through a network wire L01, a network wire L15, a network wire L29, and a network wire L313, the four network wires are sequentially cascaded from bottom to top according to the sequence of L51-L64, L5-L8, L9-L12, and L13-L16, and a sending terminal is required to issue a configuration command to each L ED sub-screen 1 through the network wire, and only when the connection mode of the software configuration is consistent with the actual connection mode, the L ED display screen can normally display.
Because L ED sub-screens are connected in cascade by network cables, the number of network cables between L ED sub-screens is very large, and field wiring is complex and easy to connect wrongly.
In the prior art, let L ED sub-screen adopt wifi's mode in order to solve this problem general constant, however, because the L ED sub-screen quantity that constitutes L ED display screen is more for there is the problem that occupies each other in the wireless signal frequency channel of different L ED sub-screens, and then causes signal interference, thereby has reduced the display effect of L ED display screen.
Therefore, how to effectively reduce the signal interference in the L ED display screen is a technical problem to be solved urgently.
Disclosure of Invention
The invention provides an L ED display screen and a control method thereof, which are used for solving the technical problem of large signal interference in a L ED display screen in the prior art.
In a first aspect, to solve the above technical problem, an L ED display screen provided by an embodiment of the present invention includes:
the plurality of L ED sub-screens, the plurality of L ED sub-screens are arranged in an array, and each L ED sub-screen is provided with a wireless module facing to four different directions;
the wireless module is arranged at the splicing position of the L ED sub-screen and is used for short-distance wireless communication;
two communication modules at the splicing location of the plurality of L ED sub-screens are automatically paired for connection.
The L ED display screen is provided with wireless modules facing four different directions in each L ED sub-screen, and the two communication modules at the splicing positions are connected in an automatic pairing mode, wherein the wireless modules are arranged at the splicing positions of the L ED sub-screens and are in short-distance wireless communication, so that the wireless modules between the L ED sub-screens spliced together are paired one by one, the wireless communication distance is limited within a certain range, the problem of mutual interference between signals caused by the fact that multiple wireless modules exist in the same region is solved, in addition, due to the fact that signals are transmitted between L ED sub-screens without cables, the installation of the L ED display screen is simplified, the complexity of maintenance of the L ED display screen is reduced, due to the fact that the L ED sub-screens are connected in a wireless mode, the problem of repeated plugging and unplugging of network cables and connectors between L ED sub-screens during installation and maintenance is solved, and the problem of repeated dismounting reliability of the cables and the connectors is.
Optionally, the communication distance of the wireless module is less than or equal to a preset value.
Optionally, the wireless module is a module using 60GHz wireless communication.
Optionally, when the wireless module is a long-distance wireless module, the wireless module has a shielding case, and the shielding case is used for making the communication distance of the long-distance wireless module less than or equal to a preset value.
Optionally, the preset value is 10-15 mm.
In a second aspect, an embodiment of the present invention provides a control method for splicing the L ED display screen according to the first aspect, including:
any L ED sub-screen in the L ED display screen performs the following operations:
acquiring coordinates of all L ED sub-screens in a L ED display screen from broadcast messages of L ED sub-screens spliced with any L ED sub-screen, wherein L ED sub-screens in the L ED display screen are arranged in an array, and the coordinates of any L ED sub-screen are determined according to the connection states of four wireless modules in any L ED sub-screen and the coordinates of an L ED sub-screen spliced with any L ED sub-screen;
based on the resolution of the L ED display screen and the maximum resolution of a signal source which can be carried by each signal interface of the L ED display screen, carrying out region division on the L ED display screen to obtain resolutions corresponding to a plurality of display regions, wherein one display region is correspondingly accessed to one signal source;
dividing the resolution of each display area by the resolution of the L ED sub-screen to obtain the number of L ED sub-screens contained in each display area;
determining the L ED sub-screens forming each display area based on the coordinates of all L ED sub-screens, the number of L ED sub-screens contained in each display area and the position relation of each display area;
and judging whether any L ED sub-screen is positioned at the splicing position of the display area, and if so, controlling the disconnection of the wireless module positioned at the splicing position of the display area by any L ED sub-screen.
Optionally, obtaining coordinates of all L ED sub-screens includes:
determining L ED sub-screens with the number of connected wireless modules being 2 in L ED sub-screens as first L ED sub-screens, determining coordinates of the first L ED sub-screens according to the direction of the connected wireless modules in the first L ED sub-screens, and sending the coordinates of the first L ED sub-screens to L ED sub-screens which are correspondingly spliced, wherein the first L ED sub-screens are L ED sub-screens positioned on four opposite corners of the L ED display screen;
determining L ED sub-screens with the number of connected wireless modules being 3 in L ED sub-screens as second L0 ED sub-screens, determining coordinates of the second L ED sub-screens according to the direction of the connected wireless modules in the second L1 ED sub-screens and the coordinates of L3 ED sub-screens correspondingly spliced by the second L2 ED sub-screens, and sending the coordinates of the second L ED sub-screens and other known L ED sub-screens to L ED sub-screens spliced with the second L ED sub-screens, wherein the second L ED sub-screens are L ED sub-screens positioned on four sides of the L ED display screen;
determining a L ED sub-screen with 4 connected wireless modules in L ED sub-screens as a third L0 ED sub-screen, determining coordinates of a third L ED sub-screen according to the direction of the connected wireless modules in the third L1 ED sub-screen and the coordinates of a L3 ED sub-screen correspondingly spliced with the third L2 ED sub-screen, and sending the coordinates of the third L ED sub-screen and other known L ED sub-screens to an adjacent L ED sub-screen correspondingly spliced with the third L ED sub-screen, wherein the third L ED sub-screen is a L ED sub-screen located in an area surrounded by four sides of the L ED display screen.
Optionally, determining coordinates of the first L ED sub-screen according to a direction in which a connected wireless module in the first L ED sub-screen is located includes:
assuming that the L ED display screen has M × N L ED sub-screens, then:
determining coordinates of the first L ED sub-screen to be (1, 1) when a wireless module located in a first direction and a second direction in the first L ED sub-screen is in a connected state;
determining coordinates of the first L ED sub-screen to be (M, 1) when a wireless module located in a first direction and a fourth direction in the first L ED sub-screen is in a connected state;
determining coordinates of the first L ED sub-screen to be (1, N) when wireless modules located in a second direction and a third direction in the first L ED sub-screen are in a connected state;
when the wireless modules positioned in the third direction and the fourth direction in the first L ED sub-screen are in a connected state, the coordinates of the first L ED sub-screen are determined to be (M, N).
Optionally, determining coordinates of the second L ED sub-screen according to a direction in which a connected wireless module in the second L ED sub-screen is located and coordinates of the L ED sub-screen spliced with the second L ED sub-screen, including:
when a wireless module in the second L ED sub-screen located in the first direction is in an unconnected state, determining that the ordinate of the second L ED sub-screen is N, and the abscissa of the second L ED sub-screen is the abscissa of L ED sub-screen spliced in the fourth direction of the second L ED sub-screen plus 1, or the abscissa of L ED sub-screen spliced in the second direction of the second L ED sub-screen minus 1;
when the wireless module in the second direction in the second L ED sub-screen is in an unconnected state, determining that the abscissa of the second L ED sub-screen is M, and the ordinate of the second L ED sub-screen is the abscissa of L ED sub-screen spliced in the first direction of the second L ED sub-screen minus 1, or the abscissa of L ED sub-screen spliced in the third direction of the second L ED sub-screen plus 1;
when a wireless module in the second L ED sub-screen located in the third direction is in an unconnected state, determining that the ordinate of the second L ED sub-screen is 1, and the abscissa of the second L ED sub-screen is the abscissa of L ED sub-screen spliced in the fourth direction of the second L ED sub-screen plus 1, or the abscissa of L ED sub-screen spliced in the second direction of the second L ED sub-screen minus 1;
when the wireless module in the second L ED sub-screen located in the fourth direction is in an unconnected state, it is determined that the abscissa of the second L ED sub-screen is 1, and the ordinate of the second L ED sub-screen is the abscissa value minus 1 of a L ED sub-screen spliced in the first direction located in the second L ED sub-screen, or the abscissa value plus 1 of a L ED sub-screen spliced in the third direction located in the second L ED sub-screen.
Optionally, determining coordinates of the third L ED sub-screen according to the direction of the connected wireless module in the third L ED sub-screen and coordinates of the L ED sub-screen spliced by the third L ED sub-screen, including:
the abscissa of the third L ED sub-screen is the abscissa value of a L ED sub-screen spliced in the first direction of the third L ED sub-screen minus 1, or the abscissa value of a sub-screen spliced adjacent to L ED sub-screen spliced in the third direction of the third L ED sub-screen plus 1;
the ordinate of the third L ED sub-screen is the ordinate of L ED sub-screen spliced in the second direction of the third L ED sub-screen minus 1, or the ordinate of L ED sub-screen spliced in the fourth direction of the third L ED sub-screen plus 1.
Through the technical solutions in one or more of the above embodiments of the present invention, the embodiments of the present invention have at least the following technical effects:
in the embodiment provided by the invention, the wireless modules facing four different directions are arranged in each L ED sub-screen of the L ED display screen, and the two communication modules at the splicing positions are automatically connected in a matching way, wherein the wireless modules are arranged at the splicing positions of the L ED sub-screens and are used for short-distance wireless communication, so that the wireless modules among the L ED sub-screens spliced together are paired one by one, the wireless communication distance is limited within a certain range, the problem of mutual interference among signals caused by the existence of multiple wireless modules in the same area is solved, moreover, the installation of the L ED display screen is simplified and the complexity of maintenance of the L ED display screen is reduced due to the fact that no cable is transmitted among the L ED sub-screens, and due to the fact that the wireless connection is adopted among the L ED sub-screens, the problem that the network cables and connectors among the L ED sub-screens are repeatedly plugged and pulled out is solved, and the problem of the repeated dismounting reliability of the cables and connectors is solved.
Drawings
FIG. 1 is a schematic structural diagram of a L ED panel composed of 4x 4L ED sub-panels 1;
fig. 2 is a schematic structural diagram of an L ED display screen according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the orientation of four wireless modules in an L ED sub-screen according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an L ED sub-screen provided by an embodiment of the present invention;
FIG. 5 is a flowchart of a method for controlling an L ED display screen according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating coordinates of a L ED sub-screen of an L ED display screen according to an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating the area division of an L ED display screen according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides an L ED display screen and a control method thereof, and aims to solve the technical problem that signal interference in a L ED display screen is large in the prior art.
In order to solve the technical problems, the general idea of the embodiment of the present application is as follows:
the L ED display screen comprises a plurality of L ED sub-screens, a plurality of L ED sub-screens are arranged in an array mode, each L ED sub-screen is provided with a wireless module facing four different directions, the wireless modules are arranged at the splicing positions of the L ED sub-screens and are used for short-distance wireless communication, and two communication modules at the splicing positions of the L ED sub-screens are connected in an automatic pairing mode.
According to the scheme, the wireless modules facing four different directions are arranged in each L ED sub-screen of the L ED display screen, and the two communication modules at the splicing positions are automatically connected in a matched mode, wherein the wireless modules are arranged at the splicing positions of the L ED sub-screens and are in short-distance wireless communication, so that the wireless modules among the L ED sub-screens spliced together are paired one by one, the wireless communication distance is limited within a certain range, the problem that signals are interfered with one another due to the fact that multiple wireless modules exist in the same area is solved, moreover, due to the fact that no cable exists in signal transmission among the L ED sub-screens, installation of the L ED display screen is simplified, the complexity of maintenance of the L ED display screen is reduced, due to the fact that wireless connection is adopted among the L ED sub-screens, the problem that a network cable and a connector between the L ED sub-screens are repeatedly plugged and pulled out in and out in installation and maintenance is solved, and repeated dismounting and mounting reliability of.
In order to better understand the technical solutions of the present invention, the following detailed descriptions of the technical solutions of the present invention are provided with the accompanying drawings and the specific embodiments, and it should be understood that the specific features in the embodiments and the examples of the present invention are the detailed descriptions of the technical solutions of the present invention, and are not limitations of the technical solutions of the present invention, and the technical features in the embodiments and the examples of the present invention may be combined with each other without conflict.
Referring to fig. 2, a schematic structural diagram of an L ED display screen according to an embodiment of the present invention is shown, where the L ED display screen includes:
the LED screen comprises a plurality of L ED sub-screens 1, wherein the plurality of L ED sub-screens 1 are arranged in an array mode, each L ED sub-screen 1 is internally provided with a wireless module 11 facing four different directions, the wireless modules 11 are arranged at the splicing positions of the L ED sub-screens 1 and are used for short-distance wireless communication, and the two communication modules 11 at the splicing positions of the plurality of L ED sub-screens 1 are connected in a pairing mode.
In fig. 2, the L ED display screen is composed of L ED sub-screen 1 of 4 × 4, and the number of L ED sub-screens 1 composing one L ED display screen is not limited to the example in fig. 2 in practical application.
In the embodiment provided by the invention, the communication distance of the wireless communication module 11 is less than or equal to a preset value, and the preset value is usually not more than 10-15 mm.
Specifically, the wireless communication module 11 may be a module that uses 60GHz wireless communication, and the transmission distance of such a module is usually very small, and the transmission bandwidth is large, so that the module is suitable for video transmission.
If the wireless module is a long-distance wireless module, the wireless module is provided with a shielding case, and the shielding case is used for enabling the communication distance of the long-distance wireless module to be smaller than or equal to a preset value.
In the embodiment provided by the invention, the wireless modules among the L ED sub-screens spliced together are paired one by one, and the wireless communication distance is limited in a certain range, so that the problem of mutual interference among signals caused by a plurality of wireless modules in the same area is solved, in addition, the installation of the L ED display screen is simplified and the complexity of maintaining the same is reduced because no cable exists in the signal transmission among the L ED sub-screens, and the problem of the reliability of repeated dismounting and mounting of the cable and the connector because the L ED sub-screens are in wireless connection and the repeated plugging and pulling of the network cable and the connector among the L ED sub-screens is avoided.
Referring to fig. 3, a schematic diagram of directions of four wireless modules in an L ED sub-screen according to an embodiment of the present invention is shown.
In the embodiment provided by the invention, the two wireless modules 11 at the splicing positions of the two L ED sub-screens 1 are oppositely arranged, so that the two wireless modules at the splicing positions can be ensured to communicate.
After L ED display screen is gone up the electricity, L ED sub-screen 1 in lie in the wireless module 11 of splice position can automatic pair the connection, can save complicated wiring step like this, improve work efficiency, in addition, because L ED sub-screen 1 in the wireless module be short distance wireless module, so can avoid the frequency channel between the wireless module because of occuping each other, and lead to the problem of signal mutual interference, improve wireless intermodule signal transmission's stability, and the utilization ratio of bandwidth.
In the embodiment provided by the present invention, the L ED sub-panel 1 transmits data signals, control signals, and status signals in a broadcast manner, and each L ED sub-panel 1 broadcasts all the obtained data signals, control signals, and status signals through the four wireless modules 11, and finally each L ED sub-panel 1 has all the status signals and data signals of the L ED sub-panel 1.
Referring to fig. 4, which is a schematic structural diagram of an L ED sub-screen according to an embodiment of the present invention, a L ED sub-screen 1 further includes a control device 12 and a L ED lamp panel 13, the control device 12 is communicatively connected to 4 wireless modules 1 through a high-speed serial servers interface (not shown in fig. 4), detects states of the wireless modules 1 in 4 directions in real time, and transmits and receives data signals (such as video signals) in 4 directions through the four wireless modules.
The control Device 12 may be a Programmable logic controller (FPGA) or a Complex Programmable logic Device (CP L D).
Specifically, the control device 12 of each L ED sub-screen 1 on the L ED display screen may first find the L ED sub-screen 1 at the 4 angular positions of the L ED display screen by obtaining the pairing status of the wireless module 1 in the 4 directions thereof and the wireless module 1 of the L ED sub-screen 1 at the spliced position, and the L ED sub-screen 1 at the 4 corners may calculate the number of one row and one column L ED sub-screen 1 of the L ED display screen by sequentially transmitting the coordinates of the sub-screen to the L ED sub-screen 1 spliced therewith, and each L ED sub-screen 1 may calculate the coordinates of the sub-screen by calculating the difference from the coordinates of the L ED sub-screen at the 4 angular positions thereof, and broadcast the coordinates of the sub-screen through the 4 directions wireless module 1.
In the embodiment provided by the invention, because the two wireless modules 1 positioned at the splicing positions of the two L ED sub-screens 1 are automatically paired and connected, the identifiers of the wireless modules and the coordinate positions do not need to be manually bound like the prior art, so that the occurrence of binding errors can be prevented, the workload is reduced, and the working efficiency is improved.
Based on the same inventive concept, an embodiment of the present invention provides a control method for splicing the L ED display screen, where the structure of the L ED display screen can be referred to the description of the foregoing embodiment, and repeated descriptions are omitted, please refer to fig. 5, and the control method includes:
l ED any L ED sub-screen in the ED display screen performs the following operations:
and 501, acquiring coordinates of all L ED sub-screens in a L ED display screen from broadcast messages of L ED sub-screens spliced with any L ED sub-screen, wherein L ED sub-screens in the L ED display screen are arranged in an array, and the coordinates of any L ED sub-screen are determined according to the connection states of four wireless modules in any L ED sub-screen and the coordinates of L ED sub-screens spliced with any L ED sub-screen.
Specifically, obtaining L coordinates of all L ED sub-screens in the ED display screen includes:
firstly, L ED sub-screens with the number of 2 wireless modules connected in L ED sub-screens are determined as first L ED sub-screens, the coordinates of the first L ED sub-screens are determined according to the direction of the connected wireless modules in the first L ED sub-screens, and the coordinates of the first L ED sub-screens are sent to the L ED sub-screens which are correspondingly spliced, wherein the first L ED sub-screens are L ED sub-screens located on four opposite corners of the L ED display screen.
Referring to fig. 6, a schematic coordinate diagram of L ED sub-screens in an L ED display screen provided in an embodiment of the present invention, assuming that the L ED display screen has M × N L ED sub-screens, then:
the method comprises the steps of determining coordinates of a first L ED sub-screen to be (1, 1) when wireless modules located in a first direction A and a second direction B in the first L ED sub-screen are in a connected state, determining coordinates of a first L ED sub-screen to be (M, 1) when wireless modules located in the first direction A and a fourth direction D in the first L ED sub-screen are in a connected state, determining coordinates of a first L ED sub-screen to be (1, N) when wireless modules located in the second direction B and a third direction C in the first L ED sub-screen are in a connected state, and determining coordinates of a first L ED sub-screen to be (M, N) when wireless modules located in the third direction C and the fourth direction D in the first L ED sub-screen are in a connected state.
Secondly, determining L ED sub-screens with the number of connected wireless modules being 3 in L ED sub-screens as second L0 ED sub-screens, determining the coordinates of second L ED sub-screens according to the direction of the connected wireless modules in the second L1 ED sub-screens and the coordinates of L3 ED sub-screens spliced correspondingly by the second L2 ED sub-screens, and sending the coordinates of the second L ED sub-screens and other known L ED sub-screens to the L ED sub-screens spliced by the second L ED sub-screens, wherein the second L ED sub-screens are L ED sub-screens located on four sides of the L ED display screens.
Specifically, when the wireless module in the first direction a of the second L ED sub-screen is in the unconnected state, the ordinate of the second L ED sub-screen is determined to be N, the abscissa of the second L ED sub-screen is determined to be 1 plus the abscissa of the L ED 2 sub-screen in the fourth direction D of the second L ED sub-screen or 1 minus the abscissa of the L ED sub-screen in the second direction B of the second L ED 3ED sub-screen, when the wireless module in the second direction B of the second 599 ED sub-screen is in the unconnected state, the abscissa of the second L ED 6 sub-screen is determined to be M, the ordinate of the second L ED 7ED sub-screen is determined to be 1 minus the abscissa of the 869 ED sub-screen in the first direction a of the second 8653 ED 8 sub-screen or 368740 ED sub-screen in the third direction C of the second L ED sub-screen or L plus the abscissa of the second transverse coordinates of the second connected sub-screen L ED sub-screen L is determined to be L, when the second transverse coordinates of the second L ED sub-screen is determined to be L in the unconnected state, and L is determined to be 363672 plus the second 363 ED sub-screen or L is determined to be L plus the second transverse coordinates of the unconnected state.
And finally, determining L ED sub-screens with 4 connected wireless modules in L ED sub-screens as third L0 ED sub-screens, determining the coordinates of third L ED sub-screens according to the direction of the connected wireless modules in the third L1 ED sub-screens and the coordinates of L3 ED sub-screens correspondingly spliced by the third L2 ED sub-screens, and sending the coordinates of the third L ED sub-screens and other known L ED sub-screens to adjacent L ED sub-screens correspondingly spliced by the third 35L ED sub-screens, wherein the third L ED sub-screens are L ED sub-screens located in an area surrounded by four sides of the L ED display screens.
Specifically, the abscissa of the third L ED sub-screen is the abscissa of the L ED sub-screen spliced in the first direction a of the third L ED sub-screen minus 1, or the index value of the adjacent L ED sub-screen spliced in the third direction C of the third L ED sub-screen plus 1, and the ordinate of the third L ED sub-screen is the ordinate of the L ED sub-screen spliced in the second direction B of the third L ED sub-screen minus 1, or the ordinate of the L ED sub-screen spliced in the fourth direction D of the third L ED sub-screen plus 1.
For example, the first L ED sub-screen (1, 1) in the upper left corner may simultaneously transmit its coordinates (1, 1) to the paired wireless modules, e.g., transmit its coordinates (1, 1) to the second L ED sub-screen corresponding to the splicing position through the wireless module in the first direction a and the wireless module in the second direction B, the second L ED sub-screen in the first direction determines its own coordinates (1, 2) according to the coordinates (1, 1) of the first L ED sub-screen, and transmits its own coordinates (1, 2) and the coordinates (1, 1) of the first L ED sub-screen to the spliced L ED sub-screen through broadcast messages, and the determination of the coordinates of the other second L ED sub-screens is similar and will not be described again.
After obtaining the coordinates of all L ED sub-screens, step 502 may be performed.
502, carrying out region division on the L ED display screen based on the resolution of the L ED display screen and the maximum resolution of a signal source which can be carried by each signal interface of the L ED display screen to obtain the resolutions corresponding to a plurality of display regions, wherein one display region is correspondingly accessed to one signal source.
Because the L ED display screen usually has a plurality of signal interfaces, one end of these signal interfaces is connected with the screen splitting machine, and the other end is connected with the appointed area in the L ED display screen, the screen splitting machine is used to divide a total signal source (such as video signal) into the sub-signal sources corresponding to the number of signal interfaces of the L ED display screen, and each sub-signal source displays in the display area corresponding to the signal interface, so that the L ED display screen displays a complete picture.
After obtaining the coordinates of all L ED sub-screens, it is necessary to partition the L ED display screen into regions according to the maximum resolution of the signal source that the signal interface can carry.
Fig. 7 is a schematic diagram of area division of an L ED display screen according to an embodiment of the present invention.
In fig. 7, taking the resolution of an L ED display screen as 2880x1620 as an example, assuming that the maximum resolution of a signal source that can be carried in a signal interface is 1920x1080, the width limit of a single block area is 1920 and the height is 1080, so that the total width and height of a L ED display screen can be calculated to be divided into 4 areas, namely area 1(1920 × 540), area 2(960 × 540), area 3(1920 × 1080) and area 4(960 × 1080), and each area is accessed to a signal source with different resolutions from a corresponding interface.
After obtaining the resolutions corresponding to the plurality of display regions, steps 503 and 505 may be performed.
And 503, dividing the resolution of each display area by the resolution of L ED sub-screens to obtain the number of L ED sub-screens contained in each display area.
And 504, determining L ED sub-screens forming each display area based on the coordinate information of all L ED sub-screens, the number of L ED sub-screens contained in each display area and the position relation of each display area.
And 505, judging whether any L ED sub-screen is positioned at the splicing position of the display area, and if the result is that any L ED sub-screen controls the disconnection of the wireless module positioned at the splicing position of the display area.
After the block division is completed, each L ED sub-screen judges the area of the L ED sub-screen around, a L ED sub-screen internal control device (such as an FPGA) controls to disconnect the wireless module pairing of non-identical areas, and forms new position sequence division in the identical area, and the signal source, the control information and the state information which belong to the identical area are broadcast and transmitted and displayed in the L ED sub-screen in the area corresponding to the signal source, the control information and the state information.
In the embodiment provided by the invention, the state and configuration information of the wireless modules in four directions are inquired and controlled by a control device in the L ED sub-screen, the coordinates of all L ED sub-screens are determined, the L ED sub-screens in the same region are automatically connected, and video information, control information and state information are broadcasted among all L ED sub-screens in the region in a broadcasting mode, so that the L ED sub-screen is automatically configured.
The signals are broadcast through the wireless modules in 4 directions, redundant backup of the signals can be achieved, when a problem occurs in the wireless module in one direction in the L ED sub-screen, information can be obtained through other wireless modules, and therefore reliability of data transmission is improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. An L ED display screen, comprising:
the plurality of L ED sub-screens, the plurality of L ED sub-screens are arranged in an array, and each L ED sub-screen is provided with a wireless module facing to four different directions;
the wireless module is arranged at the splicing position of the L ED sub-screen and is used for short-distance wireless communication;
two communication modules at the splicing location of the plurality of L ED sub-screens are automatically paired for connection.
2. The L ED display screen of claim 1, wherein the communication distance of the wireless module is less than or equal to a preset value.
3. The L ED display screen of claim 2, wherein the wireless module is a module that employs 60GHz wireless communication.
4. The L ED display screen of claim 1, wherein when the wireless module is a long-range wireless module, the wireless module has a shield for keeping the communication distance of the long-range wireless module less than or equal to a predetermined value.
5. The L ED display screen of any one of claims 2-4, wherein the preset value is 10-15 mm.
6. A control method for splicing an L ED display screen as claimed in any one of claims 1-5, comprising:
any L ED sub-screen in the L ED display screen performs the following operations:
acquiring coordinates of all L ED sub-screens in a L ED display screen from broadcast messages of L ED sub-screens spliced with any L ED sub-screen, wherein L ED sub-screens in the L ED display screen are arranged in an array, and the coordinates of any L ED sub-screen are determined according to the connection states of four wireless modules in any L ED sub-screen and the coordinates of an L ED sub-screen spliced with any L ED sub-screen;
based on the resolution of the L ED display screen and the maximum resolution of a signal source which can be carried by each signal interface of the L ED display screen, carrying out region division on the L ED display screen to obtain resolutions corresponding to a plurality of display regions, wherein one display region is correspondingly accessed to one signal source;
dividing the resolution of each display area by the resolution of the L ED sub-screen to obtain the number of L ED sub-screens contained in each display area;
determining the L ED sub-screens forming each display area based on the coordinates of all L ED sub-screens, the number of L ED sub-screens contained in each display area and the position relation of each display area;
and judging whether any L ED sub-screen is positioned at the splicing position of the display area, and if so, controlling the disconnection of the wireless module positioned at the splicing position of the display area by any L ED sub-screen.
7. The control method of claim 6, wherein obtaining coordinates of all L ED sub-screens comprises:
determining L ED sub-screens with the number of connected wireless modules being 2 in L ED sub-screens as first L ED sub-screens, determining coordinates of the first L ED sub-screens according to the direction of the connected wireless modules in the first L ED sub-screens, and sending the coordinates of the first L ED sub-screens to L ED sub-screens which are correspondingly spliced, wherein the first L ED sub-screens are L ED sub-screens positioned on four opposite corners of the L ED display screen;
determining L ED sub-screens with the number of connected wireless modules being 3 in L ED sub-screens as second L0 ED sub-screens, determining coordinates of the second L ED sub-screens according to the direction of the connected wireless modules in the second L1 ED sub-screens and the coordinates of L3 ED sub-screens correspondingly spliced by the second L2 ED sub-screens, and sending the coordinates of the second L ED sub-screens and other known L ED sub-screens to L ED sub-screens spliced with the second L ED sub-screens, wherein the second L ED sub-screens are L ED sub-screens positioned on four sides of the L ED display screen;
determining a L ED sub-screen with 4 connected wireless modules in L ED sub-screens as a third L0 ED sub-screen, determining coordinates of a third L ED sub-screen according to the direction of the connected wireless modules in the third L1 ED sub-screen and the coordinates of a L3 ED sub-screen correspondingly spliced with the third L2 ED sub-screen, and sending the coordinates of the third L ED sub-screen and other known L ED sub-screens to an adjacent L ED sub-screen correspondingly spliced with the third L ED sub-screen, wherein the third L ED sub-screen is a L ED sub-screen located in an area surrounded by four sides of the L ED display screen.
8. The control method of claim 7, wherein determining coordinates of the first L ED sub-screen based on a direction in which a connected wireless module of the first L ED sub-screen is located comprises:
assuming that the L ED display screen has M × N L ED sub-screens, then:
determining coordinates of the first L ED sub-screen to be (1, 1) when a wireless module located in a first direction and a second direction in the first L ED sub-screen is in a connected state;
determining coordinates of the first L ED sub-screen to be (M, 1) when a wireless module located in a first direction and a fourth direction in the first L ED sub-screen is in a connected state;
determining coordinates of the first L ED sub-screen to be (1, N) when wireless modules located in a second direction and a third direction in the first L ED sub-screen are in a connected state;
when the wireless modules positioned in the third direction and the fourth direction in the first L ED sub-screen are in a connected state, the coordinates of the first L ED sub-screen are determined to be (M, N).
9. The control method of claim 8, wherein determining coordinates of the second L ED sub-screen based on the orientation of connected radios in the second L ED sub-screen and coordinates of the L ED sub-screen that is tiled with the second L ED sub-screen comprises:
when a wireless module in the second L ED sub-screen located in the first direction is in an unconnected state, determining that the ordinate of the second L ED sub-screen is N, and the abscissa of the second L ED sub-screen is the abscissa of L ED sub-screen spliced in the fourth direction of the second L ED sub-screen plus 1, or the abscissa of L ED sub-screen spliced in the second direction of the second L ED sub-screen minus 1;
when the wireless module in the second direction in the second L ED sub-screen is in an unconnected state, determining that the abscissa of the second L ED sub-screen is M, and the ordinate of the second L ED sub-screen is the abscissa of L ED sub-screen spliced in the first direction of the second L ED sub-screen minus 1, or the abscissa of L ED sub-screen spliced in the third direction of the second L ED sub-screen plus 1;
when a wireless module in the second L ED sub-screen located in the third direction is in an unconnected state, determining that the ordinate of the second L ED sub-screen is 1, and the abscissa of the second L ED sub-screen is the abscissa of L ED sub-screen spliced in the fourth direction of the second L ED sub-screen plus 1, or the abscissa of L ED sub-screen spliced in the second direction of the second L ED sub-screen minus 1;
when the wireless module in the second L ED sub-screen located in the fourth direction is in an unconnected state, it is determined that the abscissa of the second L ED sub-screen is 1, and the ordinate of the second L ED sub-screen is the abscissa value minus 1 of a L ED sub-screen spliced in the first direction located in the second L ED sub-screen, or the abscissa value plus 1 of a L ED sub-screen spliced in the third direction located in the second L ED sub-screen.
10. The control method of claim 9, wherein determining coordinates of the third L ED sub-screen from the direction in which the connected wireless module is located in the third L ED sub-screen and coordinates of the L ED sub-screen tiled by the third L ED sub-screen comprises:
the abscissa of the third L ED sub-screen is the abscissa value of a L ED sub-screen spliced in the first direction of the third L ED sub-screen minus 1, or the abscissa value of a sub-screen spliced adjacent to L ED sub-screen spliced in the third direction of the third L ED sub-screen plus 1;
the ordinate of the third L ED sub-screen is the ordinate of L ED sub-screen spliced in the second direction of the third L ED sub-screen minus 1, or the ordinate of L ED sub-screen spliced in the fourth direction of the third L ED sub-screen plus 1.
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