CN112367557B - Display method of LED television wall, television and computer readable storage medium - Google Patents
Display method of LED television wall, television and computer readable storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
- H04N21/43635—HDMI
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
- H04N21/4586—Content update operation triggered locally, e.g. by comparing the version of software modules in a DVB carousel to the version stored locally
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Abstract
The application discloses a display method of an LED television wall, a television and a computer readable storage medium, wherein the display method of the LED television wall comprises the following steps: receiving data of a first target image, and splicing and packaging pixel points of the first target image to form a second target image; and sending the image data of the second target image to a receiving end, and displaying the image data by the receiving end based on the image data. The technical problems that the existing LED large screen only has a single function as a display and is low in transmission rate are solved, and the technical effects of improving the transmission rate and being rich in functions are achieved.
Description
Technical Field
The application relates to the technical field of smart televisions, in particular to a display method of an LED television wall, a television and a computer readable storage medium.
Background
Most of traditional televisions are composed of an LCD panel, and because the display mode of the LCD panel is limited by factors of size, brightness, installation and the like, the requirements of users on large-screen brightness, colors and the like cannot be better met. In addition, the traditional LED control system is mainly used in markets, concerts and other scenes, is used as a single display function, is limited by the limitation of network cable transmission bandwidth, is complicated in field wiring, depends on field updating of related technicians, and consumes manpower and material resources. Therefore, the existing LED large screen only has a single function as a display, and the transmission rate is slow.
Disclosure of Invention
The embodiment of the application provides a display method of an LED television wall, a television and a computer readable storage medium, and aims to solve the problems that an existing LED large screen only has a single function as a display and is low in transmission rate.
In order to achieve the above object, an aspect of the present application provides a display method for an LED video wall, where the display method for the LED video wall includes the following steps:
receiving data of a first target image, and splicing and packaging pixel points of the first target image to form a second target image;
and sending the image data of the second target image to a receiving end, and displaying the image data by the receiving end based on the image data.
Optionally, the step of performing stitching and packaging on the pixel points of the first target image to form a second target image includes:
splicing a set number of pixel points of the first target image to form a target pixel point;
and forming the second target image based on all the target pixel points.
Optionally, after the step of forming the second target image based on all the target pixel points, the method includes:
calculating the storage position corresponding to each target pixel point in the second target image;
and splitting the second target image into a preset number of images according to the storage position.
Optionally, the step of sending the image data of the second target image to a receiving end includes:
reading the preset number of images, and performing data packaging on the images to generate image data;
determining the number of transmission lines according to the number of the image copies, wherein the number of the transmission lines is consistent with the number of the image copies;
transmitting the image data to the receiving end based on the determined number of the transmission lines.
Optionally, the step of sending the image data of the second target image to a receiving end further includes:
acquiring image data of each line in the second target image, and packaging the image data of each line to form a data packet;
and sending the image data to the receiving end based on the data packet.
Optionally, after the step of sending the image data of the second target image to a receiving end, the method includes:
acquiring correction coefficients corresponding to all pixel points in a current display image;
and sending the correction coefficient to the receiving end, and finishing the correction operation of the current display image by the receiving end according to the correction coefficient.
Optionally, after the step of sending the image data of the second target image to a receiving end, the method further includes:
receiving an upgrading program package, and carrying out upgrading operation according to the upgrading program package;
and when the upgrading operation is completed, generating a starting instruction.
Optionally, after the step of sending the image data of the second target image to a receiving end, the method further includes:
acquiring debugging parameters;
and sending the debugging parameters to the receiving end, and debugging by the receiving end according to the debugging parameters.
In addition, in order to achieve the above object, another aspect of the present application further provides a television, where the television includes a memory, a processor, and a display program of the LED video wall stored in the memory and running on the processor, and the processor implements the steps of the display method of the LED video wall when executing the display program of the LED video wall.
In addition, in order to achieve the above object, another aspect of the present application further provides a computer readable storage medium, where a display program of an LED video wall is stored, and when the display program of the LED video wall is executed by a processor, the steps of the display method of the LED video wall are implemented.
In this embodiment, the data of the first target image is received, the pixel points of the first target image are spliced and encapsulated to form the second target image, the image data is sent to the receiving end through the HDMI transmission line, the receiving end performs the correction operation on the image data, and the corrected image obtained by the correction operation is displayed. The problem of current LED large-size screen only possess as the single function of display, and transmission rate is slow is solved, transmission rate has been improved, the effect that the function is abundant.
Drawings
Fig. 1 is a schematic diagram of a television architecture of a hardware operating environment according to an embodiment of the present application;
FIG. 2 is a schematic flowchart illustrating a first embodiment of a display method for an LED video wall according to the present application;
FIG. 3 is a schematic flowchart illustrating a second embodiment of a display method for an LED video wall according to the present application;
FIG. 4 is a schematic flowchart illustrating a third embodiment of a display method for an LED video wall according to the present application;
FIG. 5 is a schematic flowchart illustrating a fourth embodiment of a display method for an LED video wall according to the present application;
FIG. 6 is a schematic flowchart illustrating a fifth embodiment of a display method for an LED video wall according to the present application;
fig. 7 is a schematic flow chart illustrating a process of splicing and packaging pixel points of a first target image to form a second target image in the display method of the LED television wall according to the present application;
fig. 8 is a schematic flowchart of the LED video wall display method after the step of forming the second target image based on all the target pixel points;
fig. 9 is a schematic flowchart of a process of sending image data of the second target image to a receiving end in the display method of the LED video wall according to the present application;
fig. 10 is a schematic block diagram of a display device of an LED video wall according to the present invention.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The main solution of the embodiment of the application is as follows: receiving data of a first target image, and splicing and packaging pixel points of the first target image to form a second target image; and sending the image data of the second target image to a receiving end, and displaying the image data by the receiving end based on the image data.
Because the traditional LED control large screen is mainly used in scenes such as shopping malls and concerts, the LED control large screen is used as a single display function and is limited by the limitation of network cable transmission bandwidth, the field wiring is complicated, the program updating depends on the field updating of related technicians, and manpower and material resources are consumed. According to the method and the device, the data of the first target image are received, the pixel points of the first target image are spliced and packaged to form the second target image, the image data are sent to the receiving end through the HDMI transmission line, the receiving end carries out correction operation on the image data, and the correction operation is displayed to obtain the corrected image. The problem of current LED large-size screen only possess the single function as the display, and transmission rate is slow is solved, the effect that improves transmission rate, the function is abundant has been reached.
As shown in fig. 1, fig. 1 is a schematic diagram of a television structure of a hardware operating environment according to an embodiment of the present application.
As shown in fig. 1, the television may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the television may also include a camera, RF (Radio Frequency) circuitry, sensors, remote controls, audio circuitry, wiFi modules, detectors, and the like. Of course, the television may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, and a temperature sensor, which are not described herein again.
Those skilled in the art will appreciate that the television architecture shown in fig. 1 does not constitute a limitation of television apparatus and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer-readable storage medium, may include therein an operating system, a network communication module, a user interface module, and a display program of an LED tv wall.
In the television shown in fig. 1, the network interface 1004 is mainly used for connecting a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call up the display program of the LED tv wall stored in the memory 1005, and perform the following operations:
receiving data of a first target image, and splicing and packaging pixel points of the first target image to form a second target image;
and sending the image data of the second target image to a receiving end, and displaying the image data by the receiving end based on the image data.
Referring to fig. 2, fig. 2 is a schematic flowchart of a first embodiment of a display method of an LED video wall according to the present application, where the display method of the LED video wall includes the following steps:
step S10, receiving data of a first target image, splicing and packaging pixel points of the first target image to form a second target image;
the traditional LED large screen can only be used as a display, so that the function is single, and the LED television wall can be used as a television and has the corresponding function of the television. The LED television wall is formed by splicing a main control board, a plurality of receiving boards and a plurality of LED lamp boards; the main control board is connected with the receiving board by a high-speed connecting line; the receiving plate is connected with the receiving plate through a high-speed connecting line; the receiving board is connected with the lamp panel through a flexible flat cable. The main control board is further composed of hardware architectures such as SOC, FPGA, DDR3, flash and the like; maximum support 4K (3840 × 2160 @60hz) image video source input; the method supports 16-path high-speed serial interfaces, the transmission speed of each path can reach 3.125G/s, 4-chip 4Gbit DDR3, the maximum clock rate is 800M, and 128M storage flash and the like. The receiving board is composed of hardware architectures such as an FPGA, a DDR3, a flash and the like; the maximum support is 480 × 540 pixel points, and the load and gamma conversion are realized; the method supports chromaticity correction, LED driving chip time sequence and 4-channel high-speed serial interfaces, the transmission speed of each channel can reach 3.125G/s, 2-chip 4Gbit DDR3, the maximum clock rate is 400M, and the maximum clock rate is 128M for storing flash. The receiving board is combined by taking the SOC chip and the FPGA chip as a master control, so that connecting lines are simplified, two-stage image processing is realized, the image quality is finer and finer, and the display effect is better.
The SOC chip may acquire a television program, an on-demand video, and a control instruction issue from the cloud via wifi, and perform image quality processing operations such as image scaling, gamma conversion, and HDR enhancement on an image corresponding to the acquired television program or the on-demand video, for example: zooming (enlarging, reducing), rotating, translating and the like on the image; further, in order to more effectively store the image brightness information, gamma conversion operation is also needed to make the linear response of the image from the exposure intensity closer to the response sensed by human eyes, i.e. the bleached (camera exposure) or over-dark (underexposure) image is corrected; and the HDR image enhancement processing is to recover details of dark and highlight portions in an image. Obtaining a first target image after a series of image quality processing operations, wherein the first target image is a 4K @60hz image, and 4K in the 4K @60hz image refers to the resolution of the image; the refresh rate of 60hz is 60hz, and the update speed of the image on the screen, that is, the number of times of the image on the screen appearing per second, wherein the higher the refresh rate, the smaller the flicker feeling of the image on the screen, and the higher the stability.
Because the 4K @60hz image also needs to be subjected to image cutting, storage and other operations in the FPGA chip, the SOC chip needs to transmit the 4K @60hz image to the FPGA chip according to an agreed transmission protocol, such as video transmission protocols of hdmi, vbo and the like; specifically, the image transmitted by the SOC chip is transmitted to the FPGA chip line by line, and the FPGA chip receives the second image after receiving the first image, so as to avoid a phenomenon that the memory is too large due to receiving all the images at the same time. The FPGA chip is mainly responsible for operations such as image receiving, storing, cutting and high-speed sending, and has the effects of high processing speed and good real-time performance.
The FPGA chip decodes the received 4K @60hz image, acquires pixel points in the 4K @60hz image, combines and splices the pixel points to form a second target image. Further, referring to fig. 7, the step of performing stitching and packaging on the pixel points of the first target image to form the second target image includes:
s11, splicing a set number of pixel points of the first target image to form a target pixel point;
and S12, forming the second target image based on all the target pixel points.
The FPGA chip splices the pixel points of the first target image with a set number to form a target pixel point, and a second target image is formed based on all the target pixel points. Specifically, in the FPGA chip, every 4 pixels in the 4K @60hz image are combined and spliced into a new pixel, and the image formed by all the new pixels is a second target image. And further scheduling a DDR3 bus to store a second target image, wherein the DDR3 is a computer memory specification, and has the characteristics of high working frequency (1600 Mbps) and double-rate data transmission. Meanwhile, in order to ensure sufficient time for processing the image, the storage mode of the second target image is ping-pong operation.
Further, referring to fig. 8, after the step of forming the second target image based on all the target pixel points, the method includes:
step S13, calculating the storage position corresponding to each target pixel point in the second target image;
and S14, splitting the second target image into a preset number of images according to the storage position.
The image is formed by splicing pixel points, and the information stored by each pixel point is the corresponding RGB value (red, green and blue, the three primary colors forming the image, and the range is from 0 to 225). Therefore, target pixel points of the second target image are stored in the DDR3 bus, and the target pixel points are stored in the DDR3 in a row-column arrangement mode. The FPGA chip calculates the storage position of the target pixel point through DDR addressing, specifically, determines which bank (bank) is to be addressed first, then sends a row and column address addressing command and a specific operation command (reading or writing), and performs row and column addressing in the selected bank based on the row and column address addressing command, so as to obtain the storage position of the target pixel point.
Splitting the second target image into 4 parts based on the storage positions of the target pixel points, wherein each part is 1 pixel point of FHD (Full High Definition); and reading the 4 images from the DDR3 in sequence to obtain 4 pixel points of the FHD. Optionally, if the second target image is not split, the DDR3 bus is directly scheduled based on the storage location of the target pixel point, and 1 second target image is read.
And step S20, sending the image data of the second target image to a receiving end, and displaying the image data by the receiving end.
The FPGA chip sends the packaged image data to a receiving end through an HDMI transmission line, the receiving end is a receiving board in the LED television wall and used for receiving the image data transmitted by the main control board, after the receiving board receives the image data, the image data is subjected to data analysis and is forwarded to each receiving card, and the image data is displayed by each receiving card.
Further, referring to fig. 9, the step of sending the image data of the second target image to a receiving end includes:
step S201, reading the preset number of images, and performing data encapsulation on the images to generate image data;
step S202, determining the number of transmission lines according to the number of the image copies, wherein the number of the transmission lines is consistent with the number of the image copies;
step S203, transmitting the image data to the receiving end based on the determined number of the transmission lines.
After reading different images from the DDR3, the FPGA chip performs data encapsulation on the images to form graphic data of a second target image; determining the number of transmission lines according to the number of read images, and if 4 different images are read from DDR3, sending image data of a second target image to a receiving board through a GTP high-speed transmission module and 4 HDMI lines, wherein the speed of each GTP channel can reach 3.125G, including but not limited to the speed grade; the HDMI cable is a fully digital video and audio transmission line, and can be used to transmit audio and video signals without any compression. Further, if the second target image is not split and 1 image is read from the DDR3, sending the image data of the second target image to a receiving board through a GTP high-speed transmission module and 1 HDMI line; wherein, each GTP channel speed can reach 6.250G, including but not limited to the speed grade. Because the traditional control system needs at least 16 network cables when transmitting 4K images, the wiring is complex and is limited by the limitation of the transmission bandwidth of the network cables; and this application only needs to use 4 or 1 HDMI line to transmit the 4K image for reduce the construction wiring, improved the quick transmission of image simultaneously.
After receiving data transmitted from a GTP high-speed interface of a main control terminal, a receiving terminal transmits the data to each receiving card; specifically, a plurality of receiving cards are arranged in the LED television wall and used for receiving image data from a GTP high-speed interface, wherein the receiving cards are connected in series; and after the front receiving card receives the image data, transmitting the image data to the next receiving card, and so on until transmitting the image data to all the receiving cards. And further analyzing the received image data by the front receiving card, intercepting a loading area of the front receiving card, and scheduling a DDR3 bus for storage, wherein the storage space performs ping-pong operation according to the A frame and the B frame. When the image needs to be displayed, the DDR3 bus is scheduled, the image is read, and the image is output to a driving IC on a lamp panel according to a certain driving IC time sequence, so that the LED large-screen display is completed.
Further, after the receiving end receives the image data, the color processing module is required to perform processing operations of brightness and chromaticity on an image corresponding to the image data, specifically, the color processing module schedules a DDR3 bus and reads a region image stored in an original image, that is, an image switched by frames a and B; after reading an original image, acquiring the brightness and the chromaticity of each pixel point in the image, and then correcting the gamma point-to-point brightness and chromaticity; and further arranging the images obtained by gamma correction according to a certain format, and storing the corrected images to a specified position by scheduling a DDR3 bus, wherein the storage space performs ping-pong operation according to the frames C and D. When the image needs to be displayed, the DDR3 bus is scheduled, the image after color correction, namely the C and D frame switching image, is read, the color correction image is output to a driving IC on a lamp panel according to a certain driving IC time sequence, and the LED large-screen display is completed.
In the embodiment, a television program is acquired from a cloud, and an image processing such as zooming, gamma conversion and HDR is performed on the television program to obtain a 4K @60hz image; obtain the pixel in the 4K @60hz image, splice into a new pixel every 4 pixels, all new pixel combinations form the target image, further acquire the image data of second target image, send image data to the receiving terminal through the HDMI transmission line, show based on image data by the receiving terminal. By transferring the television from the traditional LCD panel to the LED large screen, the problems of insufficient brightness, process and size of the LCD are solved, and the problem that the traditional LED system can only be used as a single function of a display is solved; furthermore, the LED television wall adopts the FPGA pure hardware architecture design, so that the LED television wall has the advantages of high integration level, high transmission efficiency, large loading area, obvious color processing effect, arbitrary zooming function support and convenient and rapid cluster management. On the other hand, by performing transmission using a high-speed serial bus, 4K image transmission requires only 4 or 1 HDMI line, so that the transmission rate is improved.
Further, referring to fig. 3, a second embodiment of the display method of the LED video wall of the present application is provided.
The second embodiment of the display method of the LED video wall is different from the first embodiment of the display method of the LED video wall in that the step of sending the image data to the receiving end further includes:
step S21, acquiring image data of each line in the second target image, and packaging the image data of each line to form a data packet;
and S22, sending the image data to the receiving end based on the data packet.
When the FPGA chip transmits the image data of the second target image to the receiving end plate, the data needs to be packaged firstly, and then a data packet obtained by the packaging operation is sent to a receiving end; specifically, image data of each line in the second target image is acquired, the image data of each line is packaged into a data packet, and information such as a data identifier, a name, keyword information, an ID value, and the like is set for each data packet. The data packet adopts: and packaging the packet header, the data and the check, for example: 55D5 (header) + one line of image data + check code (sum of header and image data). Transmitting the data packet to a receiving board through 4 HDMI lines, so that the transmission speed can reach 3.125G/channel; further, in order to realize the transmission of data more quickly, the data packet can be transmitted to the receiving board through 1 HDMI line, so that the transmission speed can reach 6.250G/channel.
In the embodiment, the image data of each line in the second target image is acquired, the image data of each line is packaged into one data packet, and then the data packet is transmitted to the receiving board through 1 or 4 HDMI lines, so that the construction wiring is reduced, and the data transmission rate is improved.
Further, referring to fig. 4, a third embodiment of the display method of the LED video wall of the present application is provided.
The third embodiment of the display method of the LED television wall is different from the first and second embodiments of the display method of the LED television wall in that after the step of sending the image data of the second target image to a receiving end, the method comprises:
step S23, acquiring correction coefficients corresponding to all pixel points in the current display image;
and step S24, sending the correction coefficient to the receiving end, and finishing the correction operation of the current display image by the receiving end according to the correction coefficient.
In order to ensure the correctness of the displayed image, image correction is usually required, and the image correction refers to restoration processing performed on a distorted image, wherein the reasons causing image distortion include various reasons, such as image distortion which may be caused by aberration, distortion, limited bandwidth and the like of an imaging system; geometric distortion of the image due to imaging device pose and scanning non-linearity; image distortion due to motion blur, radiation distortion, introduction of noise, etc.
And sending a shooting instruction to the correction camera through control software of the debugging system, taking a picture of the currently displayed image once after the correction camera receives the shooting instruction, and turning the data obtained by taking the picture to the PC terminal. When receiving data for correcting camera rotation, the PC performs correction analysis on the data through a correction algorithm to obtain a correction coefficient of each pixel, for example: taking color correction as an example, the color correction is to restore the image color and realize color consistency; the PC terminal obtains the mean value parameters of R, G and B of the photographed image, further measures the standard color blocks in the image, extracts the R, G and B values of each pixel point in a selected area in each color block, and calculates the color correction coefficient of each pixel point through a color correction coefficient calculation formula, such as a matrix calculation formula. After the PC terminal obtains the correction coefficient of each pixel point, a correction instruction is sent to the main control board; after receiving a correction instruction of a current display image, the SOC chip of the main control board acquires a correction coefficient of each pixel point in the current display image according to the correction instruction, sends the correction coefficient to the FPGA chip, and further sends the correction coefficient to a receiving end by the FPGA chip, so that the receiving end completes correction operation of the current display image according to the correction coefficient of each pixel point.
According to the embodiment, the correction operation of the currently displayed image is completed by receiving the correction instruction sent by the PC terminal and the correction coefficient of each pixel point, so that the problem of image distortion is solved, and the accuracy of image display is ensured; in addition, the current correction camera generally needs to take 4 times of photos, and the application only needs to take 1 time of photos without repeated photos, so that the working efficiency of the correction camera is improved.
Further, referring to fig. 5, a fourth embodiment of the display method of the LED video wall of the present application is provided.
The fourth embodiment of the display method of the LED television wall is different from the first, second, and third embodiments of the display method of the LED television wall in that after the step of sending the image data of the second target image to a receiving end, the method further includes:
step S25, receiving an upgrading program package, and carrying out upgrading operation according to the upgrading program package;
and step S26, generating a starting instruction when the upgrading operation is completed.
The existing LED large screen needs workers to operate on site, so that the upgrading operation is complicated, and the LED television wall adopts a control cluster upgrading method without manual intervention and PC (personal computer) terminal intervention. The remote control center sends the updated upgrading program package to the cloud, the SOC chip of the main control board is further connected and read the upgrading program package through wifi, and the upgrading program package is sent to the FPGA chip through an internal SPI communication protocol. And the FPGA chip performs upgrading operation according to the upgrading program package, such as version upgrading, BUG repairing, system patch downloading and the like. And sending a starting instruction to the system after the upgrading is finished, and automatically updating and starting the system according to the starting instruction, or automatically loading a new program by the program when the system is started next time. Secondly, the system automatically backs up the program, and if the upgrading fails, the program can be automatically restored to the backup program so as to ensure that the system does not crash.
According to the embodiment, the upgrading program package is acquired from the cloud, the upgrading operation of the system is automatically completed according to the upgrading program package, manual work and intervention of a PC (personal computer) terminal are not needed, and therefore the upgrading convenience is guaranteed.
Further, referring to fig. 6, a fifth embodiment of the display method of the LED video wall of the present application is provided.
The fourth embodiment of the display method of the LED television wall is different from the first, second, third and fourth embodiments of the display method of the LED television wall in that after the step of sending the image data of the second target image to a receiving end, the method further includes:
step S27, obtaining debugging parameters;
and S28, sending the debugging parameters to the receiving end, and debugging by the receiving end according to the debugging parameters.
The debugging system of the LED television wall comprises a PC (personal computer) end, a correction camera and control software, wherein the PC end is connected with the main control board through a network/USB (universal serial bus), and can transmit command channel data to the main control board through the SPI (serial peripheral interface), and the command channel data comprises information such as debugging instructions, correction data and display parameters; the control of the correction camera is simple to realize, the box body is corrected only by taking a picture once, and repeated shooting is not needed; the control software can quickly call the control correction camera without being compatible with other unnecessary settings.
After receiving command data transmitted by the PC end through the SPI, the main control board analyzes the command data to acquire a corresponding data instruction; and if the data instruction is a debugging instruction, acquiring a debugging file corresponding to the debugging instruction, and analyzing the debugging file to obtain debugging parameters, wherein the debugging parameters comprise clock parameters, latching parameters, module size parameters, color parameters, scanning parameters and the like. Further, the FPGA chip of the main control board transmits the acquired debugging parameters to one or more appointed receiving cards through the SPI/high-speed serial bus, and if the former receiving cards receive the debugging parameters, the former receiving cards judge whether the debugging parameters are data of the card or not; if the debugging parameters are the same as the debugging parameters, debugging operation is carried out on the LED television wall according to the debugging parameters, specifically, clock parameters are adjusted according to debugging rules to ensure that a display picture of the LED television wall is not worn, latch parameters are adjusted to ensure that the display picture of the LED television wall is correct and complete, other parameters have corresponding functions, and the LED television wall can be ensured to be normally lightened under the condition that all the debugging parameters accord with the debugging rules. If the debugging parameters are not the data of the current card, the next receiving card is transmitted through the SPI, the next receiving card automatically judges whether the data of the current card is the data of the current card, and the like is repeated until the adjusting parameters are transmitted to all the appointed receiving cards.
When the main control board receives a debugging instruction transmitted by a PC (personal computer) end, the main control board acquires debugging parameters corresponding to the debugging instruction, and transmits the debugging parameters to each appointed receiving card through the SPI (serial peripheral interface) chip by the FPGA chip, so that the receiving card finishes debugging operation according to the debugging parameters, and the debugging efficiency is improved; in addition, the internal communication uses an SPI protocol, and the safety, the efficiency and the stability of data transmission are guaranteed.
In addition, referring to fig. 10, the present application also provides a display device of an LED tv wall, the device including:
the receiving module 10 is configured to receive data of a first target image, and perform stitching and packaging on pixel points of the first target image to form a second target image;
a sending module 20, configured to send the image data of the second target image to a receiving end, where the receiving end displays the image data.
Further, the receiving module 10 includes: a splicing unit and a forming unit;
the splicing unit is used for splicing a set number of pixel points of the first target image to form a target pixel point;
the forming unit is configured to form the second target image based on all the target pixel points.
Further, the forming unit includes: a compute subunit and a split subunit;
the calculating subunit is configured to calculate a storage location corresponding to each target pixel point in the second target image;
and the splitting subunit is configured to split the second target image into a preset number of images according to the storage location.
Further, the sending module 20 includes: the device comprises a reading unit, a determining unit and a sending unit;
the reading unit is used for reading the preset number of images, performing data encapsulation on the images and generating the image data;
the determining unit is used for determining the number of transmission lines according to the number of the image copies, wherein the number of the transmission lines is consistent with the number of the image copies;
the transmitting unit is used for transmitting the image data to the receiving end based on the determined number of the transmission lines.
Further, the sending module 20 further includes an obtaining unit;
the acquiring unit is used for acquiring image data of each line in the second target image, and packaging the image data of each line to form a data packet;
the sending unit is further configured to send the image data to the receiving end based on the data packet.
Further, the obtaining unit is further configured to obtain a correction coefficient corresponding to each pixel point in the current display image;
the sending unit is further configured to send the correction coefficient to the receiving end, and the receiving end completes the correction operation of the current display image according to the correction coefficient.
Further, the sending module 20 further includes an upgrading unit and a generating unit;
the upgrading unit is used for receiving an upgrading program package and carrying out upgrading operation according to the upgrading program package;
and the generating unit is used for generating a starting instruction when the upgrading operation is completed.
Further, the obtaining unit is further configured to obtain a debugging parameter;
the sending unit is further configured to send the debugging parameters to the receiving end, and the receiving end performs debugging according to the debugging parameters.
The implementation of the functions of each module of the display device of the LED television wall is similar to the process in the above method embodiment, and is not repeated here.
In addition, the application also provides a television, which comprises a memory, a processor and a display program of the LED television wall, wherein the display program is stored in the memory and runs on the processor, and system hardware of the television consists of three parts, namely PC control software, a main control board and a receiving board. The PC end includes: LED television parameter configuration, correction acquisition and the like. The main control board includes: SOC video source generator, video image receiving, video image storing, video image cutting, high-speed serial interface transmission, DDR3 scheduling and the like. The receiving end includes: high-speed serial interface transmission, regional image capture, storage, image GAMMA conversion, point-to-point color correction, LED drive time sequence output image, DDR3 scheduling and the like. The television acquires television programs from the cloud, and performs image processing such as zooming, gamma conversion and HDR on the television programs to obtain 4K @60hz images; obtain the pixel in the 4K @60hz image, splice every 4 pixels into a new pixel, and all new pixel make up and form second target image, further acquire the image data of second target image, send image data to the display screen through the HDMI transmission line to make the display screen show the image that image data corresponds. By transferring the television from the traditional LCD panel to the LED large screen, the problems of insufficient brightness, process and size of the LCD are solved, and the problem that the traditional LED system can only be used as a single function of a display is solved; furthermore, the LED television wall adopts the FPGA pure hardware architecture design, so that the LED television wall has the advantages of high integration level, high transmission efficiency, large loading area, obvious color processing effect, arbitrary zooming function support and convenient and rapid cluster management. And by adopting a high-speed serial bus for transmission, 4K image transmission requires only 4 or 1 HDMI line, so that the transmission rate is increased.
In addition, the present application also provides a computer readable storage medium, where a display program of the LED video wall is stored, and when the display program of the LED video wall is executed by a processor, the steps of the display method of the LED video wall are implemented.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application 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 application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. 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 should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While alternative embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including alternative embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (7)
1. The display method of the LED television wall is characterized in that the LED television wall comprises a main control board, a plurality of receiving boards and an LED lamp panel, wherein the plurality of receiving boards are connected with the main control board;
the main control board comprises at least one of an SOC chip, an FPGA chip, a DDR3 chip and a flash chip, the SOC chip is used for performing image quality processing operation on an obtained image to generate a first target image and sending a first icon image to the FPGA chip, the FPGA chip is used for decoding the first target image to obtain each pixel point in the first target image and combining and splicing the pixel points to form a second target image;
the receiving board comprises at least one of an FPGA chip, a DDR3 chip and a flash chip and is used for receiving the image data of the second target image sent by the main control board and displaying the second target image based on the image data;
the method comprises the following steps:
receiving data of a first target image, and splicing a set number of pixel points of the first target image to form a target pixel point, wherein the set number is 4;
forming the second target image based on all the target pixel points;
calculating the storage position corresponding to each target pixel point in the second target image;
splitting the second target image into a preset number of images according to the storage position, wherein the preset number comprises 4;
sending the image data of the second target image to a receiving end, and displaying the image data by the receiving end based on the image data, wherein the receiving end is the receiving plate;
the LED television wall further comprises a GTP high-speed transmission module, and the step of sending the image data of the second target image to a receiving end comprises the following steps:
reading the preset number of images, and performing data packaging on the images to generate image data;
determining the number of transmission lines according to the number of the image copies, wherein the number of the transmission lines is consistent with the number of the image copies;
and sending the image data to the receiving end through the GTP high-speed transmission module and the transmission line based on the determined number of the transmission lines.
2. The method as claimed in claim 1, wherein the step of sending the image data of the second target image to a receiving end further comprises:
acquiring image data of each line in the second target image, and packaging the image data of each line to form a data packet;
and sending the image data to the receiving end based on the data packet.
3. The method for displaying on an LED video wall according to claim 1, wherein the step of sending the image data of the second target image to a receiving end comprises:
acquiring correction coefficients corresponding to all pixel points in a current display image;
and sending the correction coefficient to the receiving end, and finishing the correction operation of the current display image by the receiving end according to the correction coefficient.
4. The method for displaying on an LED video wall according to claim 1, wherein the step of sending the image data of the second target image to a receiving end further comprises:
receiving an upgrading program package, and carrying out upgrading operation according to the upgrading program package;
and when the upgrading operation is completed, generating a starting instruction.
5. The method for displaying on an LED video wall according to claim 1, wherein the step of sending the image data of the second target image to a receiving end further comprises:
acquiring debugging parameters;
and sending the debugging parameters to the receiving end, and debugging by the receiving end according to the debugging parameters.
6. A television, characterized in that the television comprises a memory, a processor and a display program of an LED television wall stored on the memory and running on the processor, and the processor implements the steps of the method according to any one of claims 1 to 5 when executing the display program of the LED television wall.
7. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a display program of an LED video wall, which when executed by a processor implements the steps of the method according to any one of claims 1 to 5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011184271.9A CN112367557B (en) | 2020-10-29 | 2020-10-29 | Display method of LED television wall, television and computer readable storage medium |
| PCT/CN2021/118808 WO2022089083A1 (en) | 2020-10-29 | 2021-09-16 | Display method for led television wall, and television and computer-readable storage medium |
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| CN202011184271.9A CN112367557B (en) | 2020-10-29 | 2020-10-29 | Display method of LED television wall, television and computer readable storage medium |
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