CN112689103A - Display control system and method of screen - Google Patents
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Abstract
The application discloses a display control system and method of a screen. Wherein, this control system includes: the application distribution device is connected with the image processor and used for sending sub-screen information of a splicing screen for playing image data to the image processor; and the image processor is realized by a field programmable gate array device and is used for respectively and simultaneously sending the image data to the sub-screens forming the spliced screen for display according to the sub-screen information. The method and the device solve the technical problem that the outdoor large screen cannot be controlled to realize image display with high resolution and high frame rate.
Description
Technical Field
The application relates to the field of screen display control, in particular to a display control system and method of a screen.
Background
The existing outdoor large screen is widely applied to various public places. The display control scheme for outdoor large screens mostly adopts software control, as shown in fig. 1, the implementation mode is that an application distribution server collects images, and generates modeling files corresponding to each screen according to the position and size of each screen forming the large screen, and then sends playing parameters, the modeling files and the collected images to an image processor corresponding to the corresponding screen, the image processor is implemented by an ARM, and the image processor receiving the images sends the corresponding images to the corresponding screen for display.
However, the above-mentioned solution based on software implementation has a problem that it is difficult to implement image transmission and display of 1080P60 frames, and the reasons for this problem are mainly two: one is the HDMI acquisition chip limit, and currently 1080P60 frames are already the limit; and the other is multi-port data distribution, so that the ARM is not suitable for parallel data processing, and at most one path of video port data is processed.
Aiming at the problem that the outdoor large screen cannot be controlled to realize image display with high resolution and high frame rate at the present stage, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the application provides a display control system and method of a screen, which at least solve the technical problem that an outdoor large screen cannot be controlled to realize image display with high resolution and high frame rate.
According to an aspect of an embodiment of the present application, there is provided a display control system of a screen, including: the application distribution device is connected with the image processor and used for sending sub-screen information of a splicing screen for playing image data to the image processor; and the image processor is realized by a field programmable gate array device and is used for respectively and simultaneously sending the image data to the sub-screens forming the spliced screen for display according to the sub-screen information.
Optionally, the application distribution device is implemented by an ARM, is connected with the image processor through a serial port and a high-definition multimedia interface respectively, and sends the sub-screen information and the playing parameters of the image data to the image processor through the serial port; and sending the image data to an image processor through a high-definition multimedia interface, wherein the sub-screen information at least comprises: the number of sub-screens and size information of each sub-screen.
Optionally, the image processor is further configured to store the image data on a memory, wherein a storage location of each frame image in the image data in the memory corresponds to a different first address.
Optionally, the image processor is further configured to determine, according to the first address and the sub-screen information, an amount of data to be read from the memory when the image data is displayed in each of the sub-screens.
Optionally, the image processor is configured to determine the amount of data that needs to be read from the memory when the image data is displayed on each sub-screen respectively, by: determining the width and height of each sub-screen according to the size information of each sub-screen; taking the product of the width and the height of each sub-screen as the size of the number of image data displayed on each sub-screen; and determining the data amount required to be read from the memory when the image data is respectively displayed on each sub-screen according to the first address and the quantity of the image data displayed on each sub-screen.
Optionally, the image processor is configured to send the image data to the sub-screens constituting the screen for display by: and selecting a second preset number of frame images from the continuous first preset number of frame images, and sending the frame images to the sub-screen of the screen for displaying, wherein the second preset number is smaller than the first preset number.
According to another aspect of the embodiments of the present application, there is also provided a display control method of a screen, the method being applied to a display control system of a screen composed of an application distribution apparatus and an image processor, wherein the image processor is implemented by a field programmable gate array device, the method including the steps of: acquiring sub-screen information of a splicing screen used for playing image data and image data sent by an application distribution device; and respectively and simultaneously sending the image data to the sub-screens forming the spliced screen for displaying according to the sub-screen information.
Optionally, the application distribution device is implemented by an ARM, is connected with the image processor through a serial port and a high-definition multimedia interface respectively, and sends the sub-screen information and the playing parameters of the image data to the image processor through the serial port; and sending the image data to an image processor through a high-definition multimedia interface, wherein the sub-screen information at least comprises: the number of sub-screens and size information of each sub-screen.
Optionally, after acquiring the image data sent by the application distribution apparatus, the method further includes: and storing the image data on a memory, wherein the storage position of each frame of image in the image data in the memory corresponds to a different first address.
Optionally, the sending the image data to the sub-screens forming the screen for display at the same time according to the sub-screen information includes: determining the data quantity which needs to be read from the memory when the image data is respectively displayed in each sub-screen according to the first address and the sub-screen information; and sending the data volume read from the memory to the corresponding sub-screen for displaying.
Optionally, determining, according to the first address and the sub-screen information, a data amount that needs to be read from the memory when the image data is respectively displayed in each sub-screen, includes: determining the width and height of each sub-screen according to the size information of each sub-screen; taking the product of the width and the height of each sub-screen as the size of the number of image data displayed on each sub-screen; and determining the data amount required to be read from the memory when the image data is respectively displayed in each sub-screen according to the first address and the quantity of the image data displayed on each sub-screen.
Optionally, the method further includes: and selecting a second preset number of frame images from the continuous first preset number of frame images, and sending the frame images to the sub-screen of the screen for displaying, wherein the second preset number is smaller than the first preset number.
According to still another aspect of the embodiments of the present application, there is also provided a non-volatile storage medium including a stored program, wherein a device in which the non-volatile storage medium is controlled to execute the above display control method of the screen when the program runs.
According to still another aspect of the embodiments of the present application, there is also provided a processor for executing a program, wherein the above display control method of a screen is performed when the program is executed.
In an embodiment of the present application, there is provided a display control system of a screen, including: the application distribution device is connected with the image processor and used for sending sub-screen information of a splicing screen for playing image data to the image processor; the image processor is realized by a field programmable gate array device and is used for respectively and simultaneously sending image data to the sub-screens forming the spliced screen according to the sub-screen information to be displayed, and the image processor realized by the FPGA can simultaneously process dozens of paths of network port data video forwarding, so that the technical effect of controlling the outdoor large screen to realize the image display with high resolution and high frame rate is realized, and the technical problem that the outdoor large screen cannot be controlled to realize the image display with high resolution and high frame rate is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram of a control system for an outdoor screen according to an embodiment of the present application;
FIG. 2 is a schematic diagram of another outdoor screen control system according to an embodiment of the present application;
fig. 3 is a block diagram of a display control system of a screen according to an embodiment of the present application;
fig. 4 is a flowchart of a display control method of a screen according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
To solve the problems in the background art, the present invention provides a control system based on outdoor screen networking display, the basic structure and the implementation principle of the system are shown in fig. 2, and the system mainly comprises: the application distribution module and an image processor realized by FPGA; the application distribution module is realized by an ARM. The application distribution uniform module is connected with the image processor through a serial port (UART) and an HDMI port; the application distribution module sends playing parameters and modeling files to the image processor through the serial port, and meanwhile, the application distribution module decodes the coded images received from the internet access and sends the decoded coded images to the image processor through the HDMI port.
The device realizes the image processor in an FPGA mode, utilizes the computational advantage of FPGA parallel processing, and the image processor realized by the FPGA can simultaneously process dozens of network port data video forwarding.
The above system is explained in detail below:
fig. 3 is a block diagram of a display control system of a screen according to an embodiment of the present application, and as shown in fig. 3, the system includes: an application distribution device 30 and an image processor 32, wherein,
the application distribution device 30 is connected with the image processor 32 and is used for sending the sub-screen information of the spliced screen for playing the image data to the image processor 32;
and the image processor 32 is implemented by a field programmable gate array device and is used for respectively and simultaneously sending the image data to the sub-screens forming the spliced screen for displaying according to the sub-screen information.
Through the system, the image processor realized through the FPGA can simultaneously process dozens of paths of network port data video forwarding, so that the technical effect of controlling an outdoor large screen to realize image display with high resolution and high frame rate is realized.
According to an optional embodiment of the present application, the application distribution device 30 is implemented by an ARM, and is respectively connected to the image processor through a serial port and a high-definition multimedia interface, and sends the sub-screen information and the playing parameters of the image data to the image processor through the serial port; and sending the image data to an image processor through a high-definition multimedia interface, wherein the sub-screen information at least comprises: the number of sub-screens and size information of each sub-screen.
In some optional embodiments of the present application, the application distribution apparatus 30 is implemented by an ARM, and the video data and the configuration information are sent to the application distribution apparatus 30 via a network for parsing, and the application distribution apparatus 30 cyclically plays the video content before there is no new video data update. Specifically, the information is transmitted to an image processor implemented by an FPGA through a High Definition Multimedia Interface (HDMI), and then the information (i.e., a modeling file) about the number of screens to be arranged on a wall surface and the size of each screen is transmitted to the image processor through a serial port (UART).
According to another alternative embodiment of the present application, image processor 32 is further configured to store the image data on a memory, wherein a storage location of each frame image in the image data in the memory corresponds to a different first address.
The image processor 32 collects the data on the HDMI, stores the data on the HDMI in the DDR, and each frame of image corresponds to a different first address on the DDR.
In some alternative embodiments of the present application, image processor 32 is further configured to determine the amount of data to be read from the memory when displaying the image data in each sub-screen according to the first address and the sub-screen information.
Preferably, image processor 32 is configured to determine the amount of data that needs to be read from memory to display the image data on each of the sub-screens, respectively, by: determining the width and height of each sub-screen according to the size information of each sub-screen; taking the product of the width and the height of each sub-screen as the size of the number of image data displayed on each sub-screen; and determining the data amount required to be read from the memory when the image data is respectively displayed on each sub-screen according to the first address and the quantity of the image data displayed on each sub-screen.
Each head address in the DDR corresponds to one frame image, and with eth0 as an example, the width and height of the sub-screen corresponding to the model 1 are determined from the model file, and then the multiplier of the width and height is determined as the size of the data amount displayed on the sub-screen.
Assuming that the first frame data is read from the first address 0, the data size read by the portal 0 is the product of the width and the height corresponding to the address 0+ the model 1, the data read by the portal 1 is the product of the end address of the address 0+ the model 1 + the width and the height corresponding to the model 2, and so on.
According to an alternative embodiment of the present application, image processor 32 is configured to send image data to the sub-screens constituting the screen for display, respectively, by: and selecting a second preset number of frame images from the continuous first preset number of frame images, and sending the frame images to the sub-screen of the screen for displaying, wherein the second preset number is smaller than the first preset number.
Preferably, frame rate control, mainly frame dropping, may also be added to the above scheme. That is, the image processor performs frame rate control by frame extraction when displaying, and for example, by reducing 60 frames of images to 30 frames, one frame of data can be read every two frames. The main purpose of this method is that in outdoor screen, the human eye can see far away from the image, in this case, the frame rate is too high and the effect is not good, therefore, the frame rate can be made low.
According to an embodiment of the present application, there is provided an embodiment of a method for controlling display of a screen, it should be noted that the steps shown in the flowchart of the drawings may be executed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different from that here.
Fig. 4 is a flowchart of a display control method of a screen according to an embodiment of the present application, and as shown in fig. 4, the method is applied to a display control system of a screen composed of the application distribution apparatus and an image processor, wherein the image processor is implemented by a field programmable gate array device, and the method includes the following steps:
step S402, acquiring sub-screen information of a splicing screen used for playing image data and image data sent by an application distribution device;
and S404, respectively and simultaneously sending the image data to the sub-screens forming the spliced screen for displaying according to the sub-screen information.
It should be noted that, reference may be made to the description related to the embodiment shown in fig. 3 for a preferred implementation of the embodiment shown in fig. 4, and details are not described here again.
According to an optional embodiment of the present application, the application distribution device in step S402 is implemented by an ARM, and is respectively connected to the image processor through a serial port and a high-definition multimedia interface, and sends the sub-screen information and the playing parameters of the image data to the image processor through the serial port; and sending the image data to an image processor through a high-definition multimedia interface, wherein the sub-screen information at least comprises: the number of sub-screens and size information of each sub-screen.
In some optional embodiments of the present application, after the image data sent by the application distribution apparatus is obtained in step S402, the image data is stored in the memory, where the storage location of each frame of image in the image data in the memory corresponds to a different first address.
According to an alternative embodiment of the present application, step S404 is implemented by: determining the data quantity which needs to be read from the memory when the image data is respectively displayed in each sub-screen according to the first address and the sub-screen information; and sending the data volume read from the memory to the corresponding sub-screen for displaying.
Preferably, the method for determining the data amount required to be read from the memory when the image data is respectively displayed in each sub-screen according to the first address and the sub-screen information comprises the following steps: determining the width and height of each sub-screen according to the size information of each sub-screen; taking the product of the width and the height of each sub-screen as the size of the number of image data displayed on each sub-screen; and determining the data amount required to be read from the memory when the image data is respectively displayed in each sub-screen according to the first address and the quantity of the image data displayed on each sub-screen.
In another optional embodiment of the present application, a second preset number of frame images are selected from the consecutive first preset number of frame images and sent to the sub-screen of the screen for displaying, where the second preset number is smaller than the first preset number.
Frame rate control, mainly frame dropping, can also be added to the above scheme. That is, the image processor performs frame rate control by frame extraction when displaying, and for example, by reducing 60 frames of images to 30 frames, one frame of data can be read every two frames. The main purpose of this method is that in outdoor screen, the human eye can see far away from the image, in this case, the frame rate is too high and the effect is not good, therefore, the frame rate can be made low.
The embodiment of the application also provides a nonvolatile storage medium, wherein the nonvolatile storage medium comprises a stored program, and the device where the nonvolatile storage medium is located is controlled to execute the above screen display control method when the program runs.
The nonvolatile storage medium is used for storing a program for executing the following functions: acquiring sub-screen information of a splicing screen used for playing image data and image data sent by an application distribution device; and respectively and simultaneously sending the image data to the sub-screens forming the spliced screen for displaying according to the sub-screen information.
The embodiment of the application also provides a processor, wherein the processor is used for running the program, and the display control method of the screen is executed when the program runs.
The processor is used for running a program for executing the following functions: acquiring sub-screen information of a splicing screen used for playing image data and image data sent by an application distribution device; and respectively and simultaneously sending the image data to the sub-screens forming the spliced screen for displaying according to the sub-screen information.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a read-Only Memory (ROM), a random access Memory (RWDXDZM, RWDZndom WXDZccess Memory), a removable hard disk, a magnetic or optical disk, and various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (12)
1. A display control system of a screen, comprising: an application distribution apparatus and an image processor, wherein,
the application distribution device is connected with the image processor and is used for sending sub-screen information of a spliced screen for playing image data to the image processor;
and the image processor is realized by a field programmable gate array device and is used for simultaneously sending the image data to the sub-screens forming the spliced screen respectively for displaying according to the sub-screen information.
2. The system of claim 1, wherein the application distribution device is implemented by an ARM, and is connected to the image processor through a serial port and a high-definition multimedia interface, respectively, and sends the sub-screen information and the playing parameters of the image data to the image processor through the serial port; and sending the image data to the image processor through the high-definition multimedia interface, wherein the sub-screen information at least comprises: the number of the sub-screens and size information of each sub-screen.
3. The system of claim 2, wherein the image processor is further configured to store the image data on a memory, wherein a storage location of each frame of image in the image data in the memory corresponds to a different first address.
4. The system of claim 3, wherein the image processor is further configured to determine an amount of data to be read from the memory for displaying the image data in each of the sub-screens according to the first address and the sub-screen information.
5. The system of claim 4, wherein the image processor is configured to determine the amount of data to be read from the memory for displaying the image data on the respective sub-screens by:
determining the width and height of each sub-screen according to the size information of each sub-screen;
taking the product of the width and the height of each sub-screen as the size of the number of image data displayed on each sub-screen;
and determining the data amount required to be read from the memory when the image data is respectively displayed on each sub-screen according to the initial address and the quantity of the image data displayed on each sub-screen.
6. The system according to any one of claims 1 to 5, wherein the image processor is configured to send the image data to the sub-screens constituting the screen for display by:
and selecting a second preset number of frame images from the continuous first preset number of frame images, and sending the frame images to the sub-screen of the screen for displaying, wherein the second preset number is smaller than the first preset number.
7. A display control method of a screen is characterized in that the method is applied to a display control system of the screen consisting of an application distribution device and an image processor, wherein the image processor is realized by a field programmable logic gate array device, and the method comprises the following steps:
acquiring sub-screen information of a splicing screen used for playing image data and the image data, which are sent by the application distribution device;
and respectively and simultaneously sending the image data to the sub-screens forming the spliced screen for display according to the sub-screen information.
8. The method of claim 7, wherein the application distribution device is implemented by an ARM, and is connected to the image processor through a serial port and a high-definition multimedia interface, respectively, and sends the sub-screen information and the playing parameters of the image data to the image processor through the serial port; and sending the image data to the image processor through the high-definition multimedia interface, wherein the sub-screen information at least comprises: the number of the sub-screens and size information of each sub-screen.
9. The method according to claim 8, wherein after acquiring the image data transmitted by the application distribution apparatus, the method further comprises:
and storing the image data on a memory, wherein the storage position of each frame of image in the image data in the memory corresponds to a different first address.
10. The method according to claim 9, wherein simultaneously transmitting the image data to the sub-screens constituting the screen for display according to the sub-screen information respectively comprises:
determining the data amount required to be read from the memory when the image data is respectively displayed in each sub-screen according to the first address and the sub-screen information;
and sending the data volume read from the memory to a corresponding sub-screen for displaying.
11. The method of claim 10, wherein determining the amount of data to be read from the memory for displaying the image data in the sub-screens according to the first address and the sub-screen information comprises:
determining the width and height of each sub-screen according to the size information of each sub-screen;
taking the product of the width and the height of each sub-screen as the size of the number of image data displayed on each sub-screen;
and determining the data amount required to be read from the memory when the image data is respectively displayed in each sub-screen according to the first address and the quantity of the image data displayed on each sub-screen.
12. The method according to any one of claims 7 to 10, further comprising:
and selecting a second preset number of frame images from the continuous first preset number of frame images, and sending the frame images to the sub-screen of the screen for displaying, wherein the second preset number is smaller than the first preset number.
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| CN113315930A (en) * | 2021-07-28 | 2021-08-27 | 广州朗国电子科技股份有限公司 | Image display method, device, medium and system of spliced screen |
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| CN110148143A (en) * | 2019-04-02 | 2019-08-20 | 南京图格医疗科技有限公司 | A method of the image segmentation based on FPGA and simultaneous display |
| CN111885410A (en) * | 2020-07-30 | 2020-11-03 | 京东方科技集团股份有限公司 | Image data processing device, method and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113315930A (en) * | 2021-07-28 | 2021-08-27 | 广州朗国电子科技股份有限公司 | Image display method, device, medium and system of spliced screen |
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