CN115866167A

CN115866167A - LED display screen image data splicing transmission method and device and terminal

Info

Publication number: CN115866167A
Application number: CN202211491549.6A
Authority: CN
Inventors: 卢振冰; 边浙焕; 史建勇; 向龙
Original assignee: Shenzhen Mooncell Electronics Co ltd
Current assignee: Shenzhen Mooncell Electronics Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-28

Abstract

The invention discloses a method, a device and a terminal for splicing and transmitting image data of an LED display screen, which relate to the technical field of image data transmission of display screens, and comprise that after a splicer receives display image data transmitted by an upper computer, according to the layout of the LED image and parameters of each network port of a sending card, the display image is divided into image data taking the network port of the sending card as a unit, and the image data is respectively stored by taking the network port as a unit and then transmitted to the sending card for sending; the receiving card receives the image data of each network port of the sending card, the image data is stored in a buffer area of the receiving end buffer by taking the network port as a unit, and the image data is sent to different display areas of the LED display screen for display by each buffer area. The splicer uses each net mouth of each sending card as a unit to divide the display data, and the display data is finely transmitted to the net mouth end, so that the independence of data transmission of each net mouth end is ensured, and the display flexibility of each minimum division unit is improved.

Description

LED display screen image data splicing transmission method and device and terminal

Technical Field

The invention relates to the technical field of image data transmission of LED display screens, in particular to a method, a device and a terminal for splicing and transmitting image data of an LED display screen.

Background

A video image splicing method is to divide an image into a plurality of display units, display the image by the plurality of display units and combine the image into a complete image, and the method is widely applied to the aspects of advertising and the like.

In the video splicing technology, the video splicing splicer is a professional video processing and control device, and has the main functions of dividing a video signal into a plurality of display units, outputting the divided display unit signals to a plurality of display terminals, and completing the splicing of a plurality of display screens to form a complete image. At present, a video splicing splicer can have multi-path input, and image splicing and superposition among the multi-path input or segmentation after one path among the multi-path input is selected to be synthesized into a picture.

The input end of the video splicer receives a standard video signal transmitted by an upper computer, the output end of the video splicer transmits the same standard video signal to a sending card, the transmission mode comprises standard bus modes such as HDMI, DVI and V-BYONE, the sending card is provided with a plurality of network ports, the sending card receives standard bus data, decodes the data and sends the data corresponding to the network ports, therefore, display partition areas corresponding to the same sending card are together, and displayed images are also related. The receiving card has a corresponding number of network ports and receives the data sent by each network port of the sending card. The sending card and the receiving card send images by using a custom interface, such as LVDS and SERDES.

At present, a display screen is divided in a square manner, each divided area comprises four minimum divided units, 4 net ports of a sending card are correspondingly connected to the four minimum divided units, the net ports of the sending card and the minimum divided units of the display screen form a one-to-one correspondence relationship, display images of the net ports of the sending card are related and used for displaying in one display divided area, and the division cannot be carried out arbitrarily, as shown in fig. 1, the minimum divided units corresponding to the net ports of each sending card belong to the same divided area, display data of the net ports of the sending card 1 correspond to the display of the divided area 1, similarly, display data of the net ports of the sending card 2 correspond to the display of the divided area 2, display data of the net ports of the sending card 3 correspond to the display of the divided area 3, and display data of the net ports of the sending card 4 correspond to the display of the divided area 4. The display data in the display partition corresponding to each transmitting card is correlated.

The existing LED display screen control system adopts a gigabit network interface as a transmission medium of an image, one sending card can have a plurality of gigabit network ports, data transmission is carried out by taking the sending card as a unit according to an image transmission mode between an existing LED display screen image splicer and the sending card, each network port data of one sending card corresponds to the display of the minimum partition unit of one partition area, a plurality of sending cards complete the display of the whole image, the data transmission is carried out by taking the sending card as a unit, the display content of the partition areas is limited, and the display content of each minimum partition unit in the partition areas is related.

However, it may happen that, in each minimum divided unit in the same display divided area, display images which are not related to each other need to be displayed, as shown in fig. 2, each minimum divided unit in the divided area 1 displays display data on 3 net ports of the

sending card

1 and 1 net port of the sending card 4, and each minimum divided unit in the divided area 4 displays display data on 1 net port of the sending card 1 and 3 net ports of the sending card 4, which cannot be realized according to the current splicing display method that the sending card divides according to net ports.

Therefore, how to display image data transmitted by different network ports of different sending cards in the same display division area is a problem to be solved urgently at present.

Disclosure of Invention

The invention aims to provide an LED display screen image data splicing transmission method, a device and a terminal, wherein a splicer splits a display image into minimum display data blocks according to the offset of a network port of each sending card and the width and height corresponding to a display area, the split display data blocks are cached by taking the network port as a unit, the data received by the sending card is the split image data by taking the network port as a unit, each network port of the sending card sends the image data of each network port to a receiving end, the receiving end caches by taking the network port as a unit after receiving the image data by taking the network port as a unit, and the display screen extracts the image data stored by taking the network port as a unit from a cache of the receiving end and displays the image data corresponding to different display areas, so that the independence of the display images of the display areas is realized, and the flexibility of the display image is improved.

The above object of the present invention is achieved by the following technical solutions:

the method, the device and the terminal for splicing and transmitting the image data of the LED display screen comprise the steps of.

The invention is further configured to:

compared with the prior art, the beneficial technical effects of this application do:

1. according to the method and the device, the display data is divided by taking the internet access as a unit through the splicer, the display content of the minimum division unit corresponding to each internet access of each sending card is accurate, and the display flexibility is improved;

2. furthermore, the divided internet access display data are cached, and the synchronism of the data sent by the internet access of each sending card is ensured.

Drawings

FIG. 1 is a schematic diagram of a prior art tiled display arrangement;

FIG. 2 is a schematic diagram of a tiled display method according to an embodiment of the present application;

FIG. 3 is a schematic diagram of display data segmentation in accordance with an embodiment of the present application;

fig. 4 is a schematic diagram of a splicing transmission device according to an embodiment of the present application.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

When the display splicing is carried out, the splicer splits the display image data of each minimum split unit for each net mouth of each sending card, and the net mouths are respectively used as units for storage and sending, the image data of each net mouth of each sending card corresponds to the display data of one minimum split unit, the one-to-one correspondence between the image data split and different display minimum display units in different display split areas is realized before the sending card, and the display flexibility is improved.

The display screen is divided into at least one division area according to needs, each division area is divided into at least minimum division units, the display image of each minimum division unit is divided by a splicer according to the parameters of each network port, and the display image is sent through different network ports of different sending cards after being cached.

According to the LED display screen image data splicing transmission method, the upper computer sends the display image data to the splicer, meanwhile, each network port parameter of each sending card is sent to the splicer, and each network port parameter comprises the offset of each network port, the display width and height corresponding to the network port image data, and the initial address and address space of cache occupied by each network port.

And after receiving the information of the upper computer, the splicer performs display image data segmentation according to the display image layout and the network port parameters of the sending cards, and the segmented result is that the display data of one segmentation module specifically corresponds to each sending card network port.

The processing modes of the sending cards are the same, in the specific embodiment of the present application, one sending card is taken as an example for description, and a plurality of sending cards are analogized and will not be described again.

The splicer divides the display image data by taking the net ports as units according to the display image layout and the parameters of each net port, caches the display image data by taking the net ports as units, and the sending card sends the image data by taking the net ports as units in the caches out from the corresponding net ports respectively. Correspondingly, the receiving card receives the image data with the network ports as units, stores the image data into the receiving end buffer through each network port of the receiving card, and transmits the image data with each network port as a unit to a corresponding display area of the display screen during display, so that the image display splicing is realized.

As shown in fig. 3, the image data is divided by the display line unit, the starting position of the line 1 is (x, y), the height of the whole display area is H, the width of the display area is W, the display image data of each line is divided according to the starting position, then the display image data of each line is stored in the buffer by the line unit and corresponds to the network port, the sending card sends the buffer data by the line unit from each network port according to the corresponding relation of the network ports, for example, the data of the line 1 is sent from the network port 1, the data of the line 2 is sent from the network port 3, the data of the line 3 is sent from the network port 2, the data of the line 4 is sent from the network port 4, and so on until the display data of all lines are sent out.

After the image data are received, the image data are cached and then are respectively sent according to the network ports, so that the transmission of the network port image data according to the requirements is ensured.

In a specific embodiment of the present application, the image data sent by the upper computer is in an HDMI format.

The utility model provides a LED display screen image data concatenation transmission device, as shown in FIG. 4, including sending end and receiving terminal, the sending end is including the host computer, splicer, sending end buffer, the sending card that connect gradually, and the receiving terminal is including the receiving card, receiving terminal buffer, the LED display screen that connect gradually.

The host computer sends the image data of the LED display screen and the parameters of each network port of each sending card to the splicer, the splicer divides the display image according to the parameters of the network port according to the image layout of the LED display screen and the parameters of each network port of each sending card, then the display data corresponding to different display minimum division units are respectively transmitted to the cache memory according to requirements, and the network port is taken as a unit for caching, the initial address and the address space corresponding to different network ports in the cache memory are divided, the display data of different minimum division units are correspondingly stored in the cache regions of the network ports respectively according to the display requirements, if the image data required to be displayed by the minimum division unit 1 is transmitted through the network port 2, the image data required to be displayed by the minimum division unit 2 is transmitted through the network port 4 and then respectively stored in the cache regions of the network ports respectively, and the sending card extracts the display data of each network port from the cache regions of the network ports and then sends the display data out from the network ports respectively corresponding network ports, that is to say, the display data is stored and sent by taking the network port as a unit.

The receiving card receives the image data of each network port of the sending card, and the network ports are also taken as units and respectively stored in a corresponding network port cache region of the receiving end buffer, and the network port cache regions are respectively sent to different display regions of the display screen for display.

The display data is divided according to the network port parameters, the network ports are taken as units for caching the display data, the same minimum division unit is different from the data transmitted by the corresponding network ports, the displayed image content is different, the data transmitted by different network ports of the same sending card are mutually independent, the display of the minimum division unit corresponding to each network port is only related to the data of each network port, the display data source of the minimum division unit is accurate, and the display flexibility is improved.

The utility model provides a LED display screen image data concatenation transmission terminal, the terminal equipment of this embodiment includes: the display splicing method comprises a processor, a memory and a computer program stored in the memory and capable of running on the processor, such as a display data segmentation program with a network port as a unit, wherein the processor executes the computer program to realize the display splicing method.

Illustratively, the computer program may be partitioned into one or more modules/units that are stored in the memory and executed by the processor to implement the invention. The one or more modules/units can be a series of instruction segments of a computer program capable of completing specific functions, and the instruction segments are used for describing the execution process of the computer program in the LED display screen image data splicing transmission terminal equipment.

The LED display screen image data splicing and transmitting terminal equipment can be computing equipment such as a desktop computer, a notebook computer, a palm computer and a cloud server. The LED display screen image data splicing and transmitting terminal equipment can comprise, but is not limited to, a processor and a memory. It will be understood by those skilled in the art that the foregoing examples are merely examples of the LED display screen image data splicing transmission terminal device, and do not constitute a limitation of the LED display screen image data splicing transmission terminal device, and may include more or less components than those shown in the drawings, or combine some components, or different components, for example, the LED display screen image data splicing transmission terminal device may further include an input and output device, a network access device, a bus, and the like.

The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. The general processor can be a microprocessor or the processor can be any conventional processor and the like, the processor is a control center of the LED display screen image data splicing and transmitting terminal device, and various interfaces and lines are utilized to connect all parts of the whole LED display screen image data splicing and transmitting terminal device.

The memory can be used for storing the computer program and/or the module, and the processor realizes various functions of the LED display screen image data splicing and transmitting terminal equipment by running or executing the computer program and/or the module stored in the memory and calling the data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.

The integrated module/unit of the LED display screen image data splicing and transmitting terminal device can be stored in a computer readable storage medium if the integrated module/unit is realized in the form of a software functional unit and is sold or used as an independent product. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, etc.

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 and, thus, 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, 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.

The present invention is 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.

The above are the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A method for splicing and transmitting image data of an LED display screen is characterized by comprising the following steps: after receiving the display image data transmitted by the upper computer, the splicer divides the display image into image data with the network port of the sending card as a unit according to the LED image layout and the parameters of each network port of the sending card, and transmits the image data to the sending card for sending after respectively storing with the network port as the unit.

2. The LED display screen image data splicing transmission method according to claim 1, characterized in that: the parameters of each network port of the sending card comprise offset, width and height of a display area.

3. The LED display screen image splicing transmission method according to claim 2, characterized in that: the method also comprises a starting address and an address space when each network port is stored.

4. The LED display screen image data splicing transmission method according to claim 1, characterized in that: and a sending end buffer is arranged between the splicer and the sending card, and the image data divided by the splicer is respectively buffered by taking the network port as a unit.

5. The utility model provides a LED display screen image data concatenation transmission device which characterized in that: the system comprises a sending end and a receiving end, wherein the sending end comprises an upper computer, a splicer, a sending end buffer and a sending card which are sequentially connected, the receiving end comprises a receiving card, a receiving end buffer and an LED display screen which are sequentially connected, the upper computer is used for sending image data of the LED display screen to the splicer, the splicer divides a display image into image data with a network port of the sending card as a unit according to the image layout of the LED display screen and parameters of each network port of the sending card, the image data with the network port as the unit is respectively stored in the sending end buffer, each network port data corresponds to a buffer area, and the sending card is used for sending the data of each network port buffer area with the network port as the unit; the receiving card is used for receiving the image data of each network port of the sending card, the image data is stored in a buffer area of the receiving end buffer by taking the network port as a unit, and the image data is sent to different display areas of the LED display screen for display by each buffer area.

6. The LED display screen image splicing transmission method according to claim 5, wherein: the splicer is used for dividing display image data according to the display area corresponding to each network port of the sending card, the offset of each network port and the width and height of a display image, and configuring the initial address and the address space of a buffer of the sending end occupied by each network port.

7. The LED display screen image splicing transmission method according to claim 5, wherein: the signal sent to the splicer by the upper computer comprises display image data and parameters of each network port of each sending card.

8. An image data splicing and transmitting terminal for an LED display screen, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, and is characterized in that: the processor, when executing the computer program, implements the method of any of claims 1-5.

9. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 5.