CN114203099A - LED controller, control method and LED display screen system - Google Patents

LED controller, control method and LED display screen system Download PDF

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Publication number
CN114203099A
CN114203099A CN202110220060.4A CN202110220060A CN114203099A CN 114203099 A CN114203099 A CN 114203099A CN 202110220060 A CN202110220060 A CN 202110220060A CN 114203099 A CN114203099 A CN 114203099A
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signal
led display
media signal
video
led
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CN114203099B (en
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徐执明
潘鸿天
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Zhejiang Uniview Technologies Co Ltd
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Zhejiang Uniview Technologies Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The embodiment of the application provides an LED controller, a control method and an LED display screen system, and relates to the technical field of displays. Wherein the LED controller includes: the first input end of the processor is connected with the digital media signal source, and the first output end of the processor is connected with the first input end of the gate; the second input end of the gating device is connected with the local media signal source, and the output end of the gating device is connected with the LED display screen; the gating device is used for selecting one path of media signal from signals output by the digital media signal source and the local media signal source as a target media signal so as to output the target media signal to the LED display screen for displaying. The embodiment of the application has no extra time delay of the local media signal and supports the display of the local media signal and the digital media signal.

Description

LED controller, control method and LED display screen system
Technical Field
The application relates to the technical field of displays, in particular to an LED controller, a control method and an LED display screen system.
Background
An LED (light Emitting diode) display screen system is a system that can be used to display various information such as text, image, video, and video signals, and the LED display screen system has a very wide application, and a daily advertisement delivery screen, a television screen, and the like are LED display screen systems. The LED display screen system can be divided into:
the synchronous LED display screen system is generally controlled by a computer and is used for synchronously displaying images displayed by the computer, and local media signals are accessed;
the asynchronous LED display screen system is generally offline and has the capability of storage and automatic playing, and digital media signals are accessed;
a synchronous and asynchronous LED display screen system refers to an LED display screen combining synchronous and asynchronous characteristics, and local media signals and digital media signals can be accessed.
Whether the synchronous LED display screen system, the asynchronous LED display screen system or the synchronous asynchronous LED display screen system still has some problems, for example, the synchronous LED display screen system only supports local media signals, does not support digital media signals such as U disk files and the like, and does not support remote back display; the asynchronous LED display screen system only supports digital media signals such as U disk files, does not support local media signals, and does not support remote playback; although the synchronous and asynchronous LED display screen system supports local media signals and digital media signals, the local media signals pass through the processor, which may cause additional delay of the local media signals and may not be displayed back remotely.
Disclosure of Invention
Embodiments of the present invention provide an LED controller, a control method and an LED display screen system that overcome the above problems or at least partially solve the above problems.
In a first aspect, an LED controller is provided, comprising:
a first input end of the processor is connected with the digital media signal source, and a first output end of the processor is connected with a first input end of the gate;
the second input end of the gating device is connected with a local media signal source, and the output end of the gating device is connected with the LED display screen;
the gating device is used for selecting one path of media signal from the signals output by the digital media signal source and the local media signal source as a target media signal so as to output the target media signal to the LED display screen for displaying.
In a possible implementation manner, an image processing module is further included between the gate and the LED display screen, an input end of the image processing module is connected with an output end of the gate, and a first output end of the image processing module is connected with the LED display screen;
the image processing module is used for carrying out LED driving on the target media signal output by the gate to obtain an LED display signal and outputting the LED display signal to an LED display screen so that the LED display screen displays the LED display signal.
In one possible implementation manner, a second output end of the image processing module is connected to a second input end of the processor, and a second output end of the processor is connected to a far-end display device;
the image processing module is further used for outputting the LED display signal to a second input end of the processor through the second output end;
the processor is further configured to encode and package the received LED display signal to obtain a video network packet, and output the video network packet to a remote display device for display through a second output end of the processor.
In one possible implementation, the processor includes:
the digital media submodule is used for receiving a digital media signal output by a digital media signal source through a first input end of the processor and outputting the digital media signal to the video decoding submodule;
the video decoding submodule is used for decoding the received digital media signal to obtain an HDMI signal and outputting the HDMI signal to the video output submodule;
the video output submodule is used for outputting the received HDMI signal to the gate through a first output end of the processor.
In one possible implementation, the processor further includes:
the video input sub-module is used for receiving the LED display signal through a second input end of the processor and outputting the LED display signal to the video coding sub-module;
the video coding submodule is used for coding the received LED display signal to obtain a coded LED display signal and outputting the coded LED display signal to the video packaging submodule;
and the video packaging submodule is used for packaging the received coded LED display signals to obtain a network video packet, and outputting the network video packet to a far-end display device through a network port through a second output end of the processor.
In a possible implementation manner, a signal conversion module is further included between the gate and the image conversion module, an input end of the signal conversion module is connected with an output end of the gate, and an output end of the signal conversion module is connected with an input end of the image conversion module;
the signal conversion module is used for converting the signal output by the gate into a signal of a preset protocol and outputting the signal of the preset protocol to the image processing module.
In one possible implementation, the image processing module includes:
the video receiving submodule is used for receiving the signal of the preset protocol and outputting the signal of the preset protocol to the output video processing submodule;
the video processing submodule is used for carrying out LED driving on the received signal of the preset protocol to obtain an LED display signal and outputting the LED display signal to the replication submodule;
the replication submodule is used for receiving the LED display signal and outputting the LED display signal to the LED packaging output submodule and the processor;
and the LED packaging output submodule is used for receiving the LED display signal and outputting the LED display signal to an LED display screen for display.
In one possible implementation manner, a digital interface is further included between the first input terminal of the processor and the digital media signal source, where the digital interface includes one or more of a Universal Serial Bus (USB) interface, a WiFi interface, and a network interface;
and a physical interface is further arranged between the second input end of the gate and the local media signal source, and the physical interface comprises one or more of a high-definition multimedia interface (HDMI) interface, a Digital Video Interface (DVI) interface and a display interface (DP) interface.
In a second aspect, an embodiment of the present application provides an LED display screen system, including: at least one of the first player and the second player, an LED display screen and the LED controller as described above;
the first player is used for outputting a digital media signal as a digital media signal source; the second player is used for outputting the physical media signal as the physical media signal source.
In a third aspect, an embodiment of the present application provides a control method of the above LED controller, including:
connecting a digital media signal source with a first input end of a processor, connecting a local media signal source with a second input end of a gate, and connecting an LED display screen with an output end of the gate;
and selecting one path of media signal from the signals output by the digital media signal source and the local media signal source through the gate to be used as a target media signal, and outputting the target media signal to the LED display screen for displaying.
According to the LED controller and the LED display screen system provided by the embodiment of the invention, the local media signal source is directly connected with the gating device, so that the local media signal does not need to pass through the processor, and no extra delay of the local media signal exists, the first input end of the processor is connected with the digital media signal source and can decode the digital media signal, the gating device selects one path of media signal as the target media signal through the signals output by the digital media signal source and the local media signal source, and then outputs the target signal to the LED display screen for displaying, so that the local media signal and the digital media signal can be displayed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly described below.
FIG. 1 schematically illustrates a schematic structural view of an LED display screen system;
FIG. 2 is a schematic diagram illustrating an LED controller in a synchronous LED display screen system according to the related art;
FIG. 3 is a schematic diagram illustrating an exemplary LED controller in a related art asynchronous LED display screen system;
FIG. 4 is a schematic diagram illustrating an LED controller in a synchronous and asynchronous LED display screen system in the related art;
fig. 5 schematically illustrates a structural diagram of an LED controller provided in an embodiment of the present application;
fig. 6 schematically illustrates a structural diagram of an LED controller according to another embodiment of the present application;
FIG. 7 is a schematic diagram illustrating an architecture of a processor provided by an embodiment of the present application;
fig. 8 is a schematic structural diagram schematically illustrating an image processing module provided in an embodiment of the present application;
fig. 9 is a schematic diagram illustrating a structure of an LED controller according to still another embodiment of the present application;
fig. 10 schematically illustrates a structural diagram of an LED controller provided in another embodiment of the present application;
fig. 11 schematically shows a flow chart of a control method of an LED controller provided in an embodiment of the present application.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
Referring to fig. 1, which schematically illustrates a schematic structural diagram of an LED display screen system, as shown in the figure, the LED display screen system generally includes a player 101, an LED controller 102 and an LED display screen 103, and as shown in fig. 1, the player 101 may be any device having a video output interface, such as a computer, an MP3(mpeg audio layer3) player, and the like, and the LED controller 102 may receive a local media signal or a digital media signal, convert the local media signal or the digital media signal into a signal that can be displayed by the LED display screen 103, and output the signal to the LED display screen 103 for displaying.
Referring to fig. 2, which schematically illustrates a structural diagram of an LED controller in a synchronous LED display screen system in the related art, as shown in the figure, the LED controller includes a conversion module 201, an image processing module 202, and a GE (Gigabit Ethernet) interface 203;
the working process of the LED controller is as follows:
the conversion module 201 receives a local media signal sent by a local media signal source (not shown in the figure), converts the local media signal into a signal of a preset protocol, and then outputs the signal of the preset protocol to the image processing module 202;
the image processing module 202 performs LED driving on the received signal of the preset protocol to obtain an LED display signal, and outputs the LED display signal to an LED display screen (not shown in the figure) through the GE interface 203 for displaying.
The controller in the synchronous LED display screen system supports the input of local media signals, but has no decoding and encoding capacity, so that the synchronous LED display screen system does not support the playing of streaming media files and does not support remote playback.
Referring to fig. 3, a schematic diagram of an LED controller in an asynchronous LED display screen system in the related art is exemplarily shown, and as shown in the figure, the LED controller includes a processor 301, a conversion module 302, and a GE interface 303.
The working process of the LED controller is as follows:
the processor 301 receives a digital media signal from a digital media signal source (not shown in the figure), decodes the digital media signal, sends a coding result to the conversion module 302, and the conversion module 302 drives the digital media signal into an LED display signal, and outputs the LED display signal to an LED display screen through the GE gateway 203 for display (not shown in the figure), but the LED display screen only supports the digital media signal and does not support a local media signal, and in addition, the processor 301 of the LED controller has no coding module, and cannot perform remote playback.
Referring to fig. 4, a schematic diagram of an LED controller in a synchronous and asynchronous LED display screen system in the related art is exemplarily shown, as shown, the LED controller includes: a conversion module 401, a processor 402, an image processing module 403, and a GE portal 404.
The working process of the LED controller is as follows:
when receiving a local media signal, the conversion module 401 receives a digital media interface sent by a local media signal source (not shown in the figure), converts the local media signal into a signal of a preset protocol, and then outputs the signal of the preset protocol to the processor 402;
the processor 402 receives a signal of a preset protocol for decoding, and outputs a decoding result to the image processing module 403;
the image processing module 403 performs LED driving on the received decoding result to obtain an LED display signal, and outputs the LED display signal to an LED display screen (not shown in the figure) through the GE gateway 404 for displaying.
When receiving the digital media signal, the processor 402 receives the digital media signal sent by a digital media signal source (not shown in the figure), decodes and converts the digital media signal to obtain a signal of a preset protocol, and outputs the signal of the preset protocol to the image processing module 403;
the image processing module 403 performs LED driving on the received signal of the preset protocol to obtain an LED display signal, and outputs the LED display signal to the LED display screen through the GE gateway 404 for displaying.
Although the controller supports the input of the local media signal and the digital media signal, the local media signal must pass through the processor, and the memory of the processor stores the local media signal first and then outputs the local media signal to other modules, which causes additional delay of the local media signal.
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The terms referred to in this application will first be introduced and explained:
SOC (System on Chip), also called System on Chip, means that it is a product, an integrated circuit with a specific target, which contains the complete System and has the full content of embedded software. From a narrow sense, the method is the chip integration of the core of an information system, and integrates key components of the system on one chip; in a broad sense, SoC is a micro-miniature system, and if the Central Processing Unit (CPU) is the brain, SoC is a system including the brain, heart, eyes, and hands.
A Multiplexer (MUX), a circuit capable of selecting any one of the paths according to requirements in the process of multi-path data transmission, is called a gate, also called a Multiplexer or a multi-path switch, and the MUX is mainly used for signal switching.
An FPGA (Field Programmable Gate Array) device belongs to a semi-custom circuit in an application-specific integrated circuit, is a Programmable logic Array, and can effectively solve the problem that the number of Gate circuits of the original device is small. The basic structure of the FPGA comprises a programmable input/output unit, a configurable logic block, a digital clock management module, an embedded block RAM, wiring resources, an embedded special hard core and a bottom layer embedded functional unit. The FPGA has the characteristics of abundant wiring resources, high repeatable programming and integration level and low investment, and is widely applied to the field of digital circuit design.
The streaming media file, and the multimedia information such as audio/video transmitted over the network mainly have two schemes of downloading and streaming transmission. Audio/video files are generally large and therefore require a large amount of storage capacity. Meanwhile, due to the limitation of network bandwidth, downloading often takes several minutes or even hours, so that the time delay is relatively large by adopting a downloading processing method. During streaming transmission, time-based media such as sound, images or animation and the like are continuously transmitted to a user computer in real time by an audio and video server, a user does not need to wait until the whole file is completely downloaded, only needs to transmit for several seconds or tens of seconds, and can watch the data after the data reaches a certain amount, so that the waiting time of the user can be greatly shortened. As the time-based media, such as sound, is played on the client, the remainder of the file will continue to be downloaded from the server in the background. Streaming not only shortens the start-up delay by ten or hundred times, but also does not require too much buffer capacity. Streaming avoids the disadvantage that the user has to wait for the entire file to be downloaded all over the Internet before viewing.
HDMI (High Definition Multimedia Interface) is a fully digital video and audio transmission Interface, and can transmit uncompressed audio and video signals.
The step of displaying back, which is often to display the result of the executed command in the program development; the remote playback in the embodiment of the present application means that the remote display device displays the content displayed on the LED display screen.
The application provides an LED controller and LED display screen system, aims at solving the above technical problem of prior art.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
An embodiment of the present application provides an LED controller, as shown in fig. 5, the LED may include: the processor 501 and the gate 502, specifically:
a processor 501, a first input terminal of which is connected to the digital media signal source 100, and a first output terminal of which is connected to a first input terminal of the gate 502;
the processor 501 of the present disclosure has encoding, decoding, and other functions, and may specifically be an SOC chip, a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof, which can implement or execute various exemplary logic blocks, modules, and circuits described in connection with the present disclosure. In addition, the processor may also be a combination for implementing a computing function, for example, a combination including one or more microprocessors, a combination of a DSP and a microprocessor, and the like.
The digital media signal source 100 may output a digital media signal, the LED controller corresponds to an asynchronous working mode when receiving and processing the digital media signal, and the digital media signal source 100 may be a wireless network WiFi, or may also be a usb disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk storage medium or other magnetic storage devices, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
Specifically, the digital media signal source 100 of the embodiment of the present application outputs the digital media signal to the processor 501 through a digital media interface, where the digital media interface may be a USB interface, a WiFi interface, or a network port, and the like, the processor 501 of the embodiment of the present application has a decoding function, and after receiving the digital media signal, the processor decodes the digital media signal, and decodes the digital media signal to obtain an HDMI signal, and in this embodiment, the processor supports an h.264/h.265 protocol to encode an LED display signal.
A second input end of the gate 502 is connected with the local media signal source 200, and an output end of the gate 502 is connected with the LED display screen 300;
the gate 502 is configured to select one of the signals output from the digital media signal source 100 and the local media signal source 200 as a target media signal, so as to output the target media signal to the LED display screen 300 for displaying.
The local media signal source can output a local media signal, the LED controller corresponds to a synchronous operation mode when receiving and processing the local media signal, the local media signal source 200 can be a computer, an MP4, etc., and the LED display screen 300 synchronously displays the content displayed by the local media signal source 200 of the computer.
The native media signal source 200 outputs the native media signal to the gater 502 through a native media interface, and the native media signal interface 200 may be an HDMI interface, a DVI interface, a DP interface, or the like.
It should be noted that the LED controller can only receive one media signal at the same time, that is, either the local media signal or the digital media signal, and the gate 502 is equivalent to a signal switch, and receives the local media signal when the signal is switched to the local media signal source 200, and receives the HDMI signal obtained by decoding the digital media signal when the signal is switched to the processor 501.
The manner in which the gate 502 determines to receive the digital media signal or to receive the local media signal in the embodiment of the present application includes, but is not limited to, the following:
receiving an operation instruction output by the outside (user) through the processor 501, if the operation instruction is to select to receive the local media signal, the processor 501 will issue an instruction to receive the local media signal to the gate 502, and the gate 502 will switch to the local media signal source 200 to receive the local media signal;
setting a priority, setting the priority of the local media signal to be higher than that of the digital media signal, receiving the local media signal under the default condition until the local media signal is received completely, and then receiving the digital media signal;
the method comprises the steps of setting a protection mechanism, setting that a local media signal is received in advance by default on the premise that the local signal is received without failure, automatically switching to receiving the digital media signal if the local media signal is received with failure (such as the damage of a connected computer and other reasons), and similarly, also setting that the digital media signal is received in advance by default on the premise that the digital media signal is received without failure, and automatically switching to receiving the local media signal if the digital media signal is received with failure (such as the damage of a connected U disk and other reasons).
The following describes the work flow of the LED controller according to the embodiment of the present application for the synchronous mode and the asynchronous mode, respectively:
if the gate 502 is switched to be connected to the local media signal source 200, the local media signal source 200 outputs the local media signal to the gate 502, and after the second input end of the gate 502 receives the local media signal, the gate 502 selects the local media signal as a target signal and outputs the target signal to the LED display screen 300 for display.
If the gate 502 is switched to be communicated with the digital media signal source 100, the digital media signal source 100 outputs a digital media signal to the processor 501, after the first input end of the processor 501 receives the digital media signal, the processor 501 decodes the digital media signal into an HDMI signal and outputs the HDMI signal to the gate 502, after the first input end of the gate 502 receives the HDMI signal, the processor 501 selects the HDMI signal decoded from the digital media signal as a target signal and outputs the target signal to the LED display screen 300 for display.
The embodiment of the application provides an LED controller, a local media signal source is directly connected with a gating device, so that the local media signal does not need to pass through a processor, extra delay of the local media signal is avoided, a first input end of the processor is connected with a digital media signal source, the digital media signal can be decoded, the gating device selects one path of media signal as a target media signal through signals output by the digital media signal source and the local media signal source, the target signal is output to an LED display screen to be displayed, and the local media signal and the digital media signal can be displayed.
On the basis of the above embodiments, as an optional embodiment, an image processing module is further included between the gate and the LED display screen, an input end of the image processing module is connected with an output end of the gate, and a first output end of the image processing module is connected with the LED display screen.
The image processing module is used for carrying out LED driving on the target media signal output by the gate to obtain an LED display signal, and outputting the LED display signal to the LED display screen so that the LED display screen displays the LED display signal.
It should be noted that, signals displayed by the LED display screen in the embodiment of the present application are processed by the image processing module, and after the image processing module receives the target media signal, the image processing module drives the target media signal to obtain an LED display signal, and the image processing module outputs the LED display signal to the LED display screen through the first output end, where the LED display signal can be directly displayed by the LED display screen.
The image processing module of the embodiment of the application can drive the target media signal by the LED, and solves the problems of noise, uneven distribution and the like in the image.
On the basis of the foregoing embodiments, a second output end of the image processing module of the embodiment of the present application is connected to a second input end of the processor, and a second output end of the processor is connected to a remote display device, on the basis of the embodiment shown in fig. 5, please refer to fig. 6, which is a schematic structural diagram of an LED controller provided in another embodiment of the present application, and as shown in the drawing:
a first input end of the processor 501 is connected with the digital media signal source 100, a second input end of the processor 502 is connected with a second output end of the image processing module 503, a first output end of the processor 501 is connected with a first input end of the gate 502, and a second output end of the processor 502 is connected with the far-end display device 400;
a second input end of the gate 502 is connected with the local media signal source 200, and an output end of the gate 502 is connected with an input end of the image processing module 503;
a first output of the image processing module 503 is connected to the LED display screen 300.
The image processing module 503 of the embodiment of the application is further configured to output the LED display signal to a second input end of the processor through a second output end, so that the processor 501 encodes and packages the received LED display signal to obtain a video network packet, and outputs the video network packet to the remote display device 400 through the second output end of the processor for display.
The image processing module of the embodiment of the application can drive the target media signal to obtain the LED display signal after LED driving, and the image processing module can not only send the LED display signal to the LED display screen through the first output end, but also send the LED display signal to the processor through the second output end. In the process of network transmission, network packets are exchanged, after the processor receives the LED display signals through the second input end, the LED display signals are coded and packaged to obtain video network packets, and the network video packets are sent to the far-end display equipment through the second output end of the processor to be displayed.
Optionally, the processor in the embodiment of the present application supports h.264 or h.265 protocols to encode the LED display signal. It should be understood that h.264 is a new generation digital video compression format following MPEG4 commonly proposed by the international organization for standardization (ISO) and the International Telecommunications Union (ITU). H.265 is a new video coding standard established by ITU-T VCEG following H.264. H.264 can realize standard definition digital image transmission at the speed lower than 2Mbps due to algorithm optimization; h.265high Profile can realize 1080p full high-definition video transmission under the transmission bandwidth of less than 1.5 Mbps.
The processor encodes and packages the LED display signals and then sends the LED display signals to the far-end display equipment, so that the far-end display equipment can also display the content displayed by the LED display screen, and the defect that the former synchronous and asynchronous system cannot be remotely viewed is solved.
On the basis of the above embodiments, as an alternative embodiment, the processor includes:
the digital media submodule is used for receiving a digital media signal output by a digital media signal source through a first input end of the processor and outputting the digital media signal to the video decoding submodule;
the video decoding submodule is used for decoding the received digital media signal to obtain an HDMI signal and outputting the HDMI signal to the video output submodule;
the video output submodule is used for outputting the received HDMI signal to the gate through a first output end of the processor.
The digital media sub-module is connected with a digital media signal source and used for receiving digital media signals output by the digital media signal source and sending the received digital media signals to the video decoding sub-module, the video decoding sub-module decodes the digital media signals to obtain HDMI signals and outputs the HDMI signals to the video output sub-module, and the video output sub-module outputs the HDMI signals to the gate through the first output end of the processor after receiving the HDMI signals.
On the basis of the foregoing embodiments, as an alternative embodiment, the processor further includes:
the video input sub-module is used for receiving the LED display signal through a second input end of the processor and outputting the LED display signal to the video coding sub-module;
the video coding submodule is used for coding the received LED display signal to obtain a coded LED display signal and outputting the coded LED display signal to the video packaging submodule;
and the video packaging submodule is used for packaging the received coded LED display signals to obtain a network video packet, and outputting the network video packet to a far-end display device through a network port through a second output end of the processor.
The video input module of the embodiment of the application receives the LED display signal through the second input end of the processor and sends the LED display signal to the video coding module, the video coding module codes the received LED display signal to obtain a coded LED display signal and outputs the coded LED display signal to the video packaging module, the video packaging module packages the LED display signal after receiving the coded LED display signal to obtain a network video packet, and the network video packet is output to the remote display device through the network port through the second output end of the processor,
referring to fig. 7, a schematic structural diagram of a processor according to an embodiment of the present application is exemplarily shown, and as shown, the processor includes: the digital media submodule 5011, the video decoding submodule 5012, the video output submodule 5013, the video input submodule 5014, the video encoding submodule 5015 and the video packing submodule 5016 specifically include:
the input end of the digital media submodule 5011 is connected with the digital media signal source 100 through the first input end of the processor, the output end of the digital media submodule 5011 is connected with the input end of the video decoding submodule 5012, the output end of the video decoding submodule 5012 is connected with the input end of the video output submodule 5013, and the output end of the video output submodule 5013 is connected with the gate 502 through the first output end;
the input of the video input submodule 5014 is connected to the image processing module 503 via a second input of the processor, the output of the video input submodule 5014 is connected to the input of the video encoding submodule 5015, the output of the video encoding submodule 5015 is connected to the input of the video packetization submodule 5016, and the output of the video packetization submodule 5016 is connected to the remote display device 400 via a second output of the processor.
On the basis of the above embodiments, as an optional embodiment, a signal conversion module is further included between the gate and the image conversion module, an input end of the signal conversion module is connected with an output end of the gate, and an output end of the signal conversion module is connected with an input end of the image conversion module;
the signal conversion module is used for converting the signal output by the gate into a signal of a preset protocol and outputting the signal of the preset protocol to the image processing module.
It should be noted that, the image processing module can process low-speed signals such as BT1120 protocol, and cannot directly process high-speed signals such as HDMI, so a signal conversion module is added between the strobe and the image processing module, and after receiving the local media signal or the HDMI signal obtained by decompressing the received digital media signal, the input end of the signal conversion module converts the HDMI signal obtained by decompressing and decoding the local media signal or the received digital media signal into a signal of a preset protocol, such as BT1120 signal, and outputs the signal of the preset protocol to the image processing module.
On the basis of the foregoing embodiments, as an alternative embodiment, please refer to fig. 8, which schematically illustrates a structural diagram of an image processing module according to an embodiment of the present application, and as shown in the drawing, the image processing module includes: the video receiving sub-module 5031, the video processing sub-module 5032, the copy sub-module 5033 and the LED packing output sub-module 5034 specifically:
the video receiving sub-module 5031 is configured to receive the signal of the preset protocol and output the signal of the preset protocol to the output video processing sub-module 5032;
the video processing sub-module 5032 is configured to perform LED driving on the received signal of the preset protocol to obtain an LED display signal, and output the LED display signal to the replication sub-module 5033;
the copy sub-module 5033 is configured to receive the LED display signal and output the LED display signal to the LED packaging output sub-module 5034 and the processor 501;
the LED packing output sub-module 5034 is configured to receive the LED display signal and output the LED display signal to the LED display screen 300 for display.
The video receiving sub-module 5031 receives a signal of a preset protocol through a first input end of the image processing module and outputs the signal of the preset protocol to the video processing sub-module 5032, the video processing sub-module 5032 performs LED driving on the signal of the preset protocol to obtain an LED display signal and sends the LED display signal to the replicon module 5033, the replicon module 5033 replicates the LED display signal so as to send the LED display signal to the LED packaging output sub-module 5034 and the processor 501, and the LED packaging output sub-module 5034 outputs the LED display signal to the LED display screen 300 for displaying after receiving the LED display signal; the processor 501 encodes and packages the LED display signal to obtain a video network packet, and sends the video network packet to the remote display device 400 for display back.
On the basis of the above embodiments, a digital interface is further included between the first input end of the processor and the digital media signal source, and the digital interface includes one or more of a universal serial bus USB interface, a WiFi interface, and a network interface.
And a physical interface is also arranged between the second input end of the gate and the local media signal source, and the physical interface comprises one or more of a high-definition multimedia interface (HDMI) interface, a Digital Video Interface (DVI) interface and a display interface (DP) interface.
Referring to fig. 9, which schematically illustrates a schematic structural diagram of an LED controller according to still another embodiment of the present application, as shown in fig. 9, an input terminal of a digital media submodule 5011 is connected to the digital media signal source 100 through a first input terminal of the processor 501, an output terminal of the digital media submodule 5011 is connected to an input terminal of a video decoding submodule 5012, an output terminal of the video decoding submodule 5012 is connected to an input terminal of a video output submodule 5013, and an output terminal of the video output submodule 5013 is connected to a first input terminal of the gate 502 through a first output terminal;
a second input end of the gate 502 is connected to the local media signal source 200, an output end of the gate 502 is connected to an input end of the video receiving sub-module 5031 of the image processing module 503 through the signal conversion module 504, an output end of the video receiving sub-module 5031 is connected to an input end of the video processing sub-module 5032, an output end of the video receiving sub-module 5031 is connected to an input end of the replication sub-module 5033, and an output end of the replication sub-module 5033 is connected to an input end of the LED packing output sub-module 5034 and an input end of the video input sub-module 5014 in the processor 501; the output end of the LED packaging output sub-module is connected with the LED display screen 300;
the input of the video input submodule 5014 is connected to the image processing module 503 via a second input of the processor, the output of the video input submodule 5014 is connected to the input of the video encoding submodule 5015, the output of the video encoding submodule 5015 is connected to the input of the video packetization submodule 5016, and the output of the video packetization submodule 5016 is connected to the remote display device 400 via a second output of the processor.
When the gate 502 gates the digital media signal, the digital media signal source 100 outputs the digital media signal to the digital media sub-module 5011, the digital media sub-module 5011 receives the digital media signal through the first input terminal of the processor and outputs the digital media signal to the video decoding sub-module 5012, the video decoding sub-module 5012 decodes the digital media signal into an HDMI signal and outputs the HDMI signal to the video output sub-module 5013, the video output sub-module 5013 outputs the HDMI signal to the gate 502 through the first output terminal of the processor, the gate 502 outputs the received HDMI signal to the signal conversion module 504, the signal conversion module 504 converts the received HDMI signal into a signal of a preset protocol and outputs the signal of the preset protocol to the video receiving sub-module 5031, the video receiving sub-module 5031 receives the signal of the preset protocol through the first input terminal of the image processing module 503, the video processing sub-module 5032 outputs a signal of a preset protocol to the video processing sub-module 5032, the video processing sub-module 5032 performs LED driving on the received signal of the preset protocol to obtain an LED display signal, and outputs the LED display signal to the replicon module 5033, the replicon module 5033 outputs the received LED display signal to the LED packing output sub-module 5034 and the video input sub-module 5014 of the processor 501, and the LED packing output sub-module 5014 outputs the received LED display signal to the LED display screen 300 through the GE portal 505 for displaying; in addition, after the LED display signal is output to the video input sub-module 5014 of the processor, the video input sub-module 5014 outputs the LED display signal to the video encoding sub-module 5015, the video encoding sub-module 5015 performs encoding processing on the received LED display signal to obtain an encoded LED display signal, and outputs the encoded LED display signal to the video packetizing module 5016, and the video packetizing module 5016 performs packetizing processing on the received encoded LED display signal to obtain a video network packet, and outputs the video network packet to the remote display device 400 through the internet access, so that the remote display device 400 can display the content displayed by the LED display screen.
If the gate 502 gates the local media signal, the local media signal source 200 outputs the local media signal to the gate 502, the gate 502 outputs the received local media signal to the signal conversion module 504, the signal conversion module 504 converts the received local media signal into a signal of a preset protocol and outputs the signal of the preset protocol to the video receiving sub-module 5031, the video receiving sub-module 5031 receives the signal of the preset protocol through the first input end of the image processing module 503 and outputs the signal of the preset protocol to the video processing sub-module 5032, the video processing sub-module 5032 performs LED driving on the received signal of the preset protocol to obtain an LED display signal and outputs the LED display signal to the replication sub-module 5033, the replication sub-module 5033 outputs the received LED display signal to the LED packing output sub-module 5034 and the video input sub-module 5014 of the processor, the LED packing output sub-module 5034 outputs the received LED display signal to the LED display screen 300 through the GE gateway for display, the video input sub-module 5014 outputs the LED display signal to the video coding sub-module 5015, the video coding sub-module 5015 performs coding processing on the received LED display signal to obtain a coded LED display signal, and outputs the coded LED display signal to the video packing module 5016, the video packing module 5016 performs packing processing on the received coded LED display signal to obtain a video network packet, and outputs the video network packet to the remote display device 400 through the gateway, so that the remote display device 400 can display the content displayed on the LED display screen.
On the basis of the foregoing embodiments, as an optional embodiment, the interface between the second output terminal of the image processing module and the second input terminal of the video processing module includes one or more of a BT1120 interface and a PCIE interface, the interface between the video processing module and the strobe includes an HDMI interface, the interface between the strobe and the signal conversion module includes an HDMI interface, and the interface between the signal conversion module and the image processing module includes a BT1120 interface.
Referring to fig. 10, a schematic structural diagram of an LED controller according to another embodiment of the present application is exemplarily shown, as shown in the drawings:
the processor is an SOC chip, the model is HI3521D, the model of the gate MUX is TMDS9136, the model of the image processing module is FPGA100T/200T, the model of the signal conversion module is ADV7619, the interfaces used by the local media signal source comprise a DVI interface, an HDMI interface and a DP interface, the interfaces used by the digital media signal source comprise a gigabit network port, a USB interface and a WiFi interface, and all the interfaces respectively transmit corresponding signals.
The complete display process of the local media signal is as follows: the processor HI3521D issues an instruction to the gate TMDS9136, the gate TMDS9136 is switched to a local media signal source, the local media signal source outputs a local media signal HDMI signal to the gate TMDS9136 through an HDMI interface, the gate TMDS9136 receives the HDMI signal and transmits the HDMI signal to the signal conversion module ADV7619 through the HDMI interface, the ADV7619 converts the HDMI signal into a BT1120 signal and outputs the BT1120 signal to the image processing module FPGA100T/200T through the BT1120 interface, the image processing module FPGA100T/200T performs LED driving on the received BT1120 signal to obtain an LED display signal and outputs the LED display signal to the PHY through the GMI interface and to the processor through the BT1120 interface, if the LED display signal of the image processing module is output to the GE interface PHY, the GE interface PHY outputs the received LED display signal to the LED display screen for display, if the image processing module outputs the LED display signal to the processor, the processor encodes and packages the received LED display signals to obtain a video network packet, and outputs the video network packet to a remote display device through the network port for displaying back.
The complete display process of the local media signal is as follows: the processor HI3521D issues an instruction to the gate TMDS9136, the gate TMDS9136 is switched to the processor, the local media signal source outputs a digital media signal USB signal to the gate TMDS9136 through an HDMI interface, the gate TMDS9136 receives the USB signal and decodes the USB signal into an HDMI signal, and outputs the HDMI signal to the signal conversion module ADV7619 through the HDMI interface, the ADV7619 converts the HDMI signal into a BT1120 signal, and outputs the BT1120 signal to the image processing module FPGA100T/200T through the BT1120 interface, the image processing module FPGA100T/200T performs LED driving on the received BT1120 signal to obtain an LED display signal, and outputs the LED display signal to the GE network interface PHY through the GMI interface and to the processor through the BT1120 interface, if the LED display signal of the image processing module is output to the GE network interface, the PHY network interface PHY outputs the received LED display signal to the LED display screen for display, if the image processing module outputs the LED display signal to the processor, the processor encodes and packages the received LED display signals to obtain a video network packet, and outputs the video network packet to the remote equipment for displaying back through the management network port.
The embodiment of the present application further provides an LED display screen system, including: at least one of a first player and a second player, an LED display screen, and an LED controller as in the first aspect above;
the first player is used as a digital media signal source to output a digital media signal; the second player is used for outputting the physical media signal as the physical media signal source.
The embodiment of the application provides an LED display screen system, a local media signal source is directly connected with a gating device, so that the local media signal does not need to pass through a processor, extra delay of the local media signal is avoided, a first input end of the processor is connected with a digital media signal source and can decode the digital media signal, the gating device selects one path of media signal as a target media signal through signals output by the digital media signal source and the local media signal source, the target signal is output to an LED display screen to be displayed, and the local media signal and the digital media signal can be displayed.
Referring to fig. 11, a schematic flowchart of a control method of an LED controller according to an embodiment of the present application is exemplarily shown, and as shown in the drawing, the method includes:
s101, connecting a digital media signal source with a first input end of a processor, connecting a local media signal source with a second input end of a gate, and connecting an LED display screen with an output end of the gate;
s102, selecting one path of media signal from signals output by the digital media signal source and the local media signal source through the gate to serve as a target media signal, and outputting the target media signal to the LED display screen for displaying.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. An LED controller, comprising:
a first input end of the processor is connected with the digital media signal source, and a first output end of the processor is connected with a first input end of the gate;
the second input end of the gating device is connected with a local media signal source, and the output end of the gating device is connected with the LED display screen;
the gating device is used for selecting one path of media signal from the signals output by the digital media signal source and the local media signal source as a target media signal so as to output the target media signal to the LED display screen for displaying.
2. The LED controller according to claim 1, further comprising an image processing module between the gate and the LED display screen, wherein an input end of the image processing module is connected to an output end of the gate, and a first output end of the image processing module is connected to the LED display screen;
the image processing module is used for carrying out LED driving on the target media signal output by the gate to obtain an LED display signal and outputting the LED display signal to an LED display screen so that the LED display screen displays the LED display signal.
3. The LED controller of claim 2, wherein a second output of the image processing module is connected to a second input of the processor, a second output of the processor being connected to a remote display device;
the image processing module is further used for outputting the LED display signal to a second input end of the processor through the second output end;
the processor is further configured to encode and package the received LED display signal to obtain a video network packet, and output the video network packet to a remote display device for display through a second output end of the processor.
4. The LED controller of claim 1, wherein the processor comprises:
the digital media submodule is used for receiving a digital media signal output by a digital media signal source through a first input end of the processor and outputting the digital media signal to the video decoding submodule;
the video decoding submodule is used for decoding the received digital media signal to obtain an HDMI signal and outputting the HDMI signal to the video output submodule;
the video output submodule is used for outputting the received HDMI signal to the gate through a first output end of the processor.
5. The LED controller of claim 3, wherein the processor further comprises:
the video input sub-module is used for receiving the LED display signal through a second input end of the processor and outputting the LED display signal to the video coding sub-module;
the video coding submodule is used for coding the received LED display signal to obtain a coded LED display signal and outputting the coded LED display signal to the video packaging submodule;
and the video packaging submodule is used for packaging the received coded LED display signals to obtain a network video packet, and outputting the network video packet to a far-end display device through a network port through a second output end of the processor.
6. The LED controller according to claim 2, further comprising a signal conversion module between the gate and the image conversion module, wherein an input terminal of the signal conversion module is connected to an output terminal of the gate, and an output terminal of the signal conversion module is connected to an input terminal of the image conversion module;
the signal conversion module is used for converting the signal output by the gate into a signal of a preset protocol and outputting the signal of the preset protocol to the image processing module.
7. The LED controller of claim 6, wherein the image processing module comprises:
the video receiving submodule is used for receiving the signal of the preset protocol and outputting the signal of the preset protocol to the output video processing submodule;
the video processing submodule is used for carrying out LED driving on the received signal of the preset protocol to obtain an LED display signal and outputting the LED display signal to the replication submodule;
the replication submodule is used for receiving the LED display signal and outputting the LED display signal to the LED packaging output submodule and the processor;
and the LED packaging output submodule is used for receiving the LED display signal and outputting the LED display signal to an LED display screen for display.
8. The LED controller of any of claims 1-7, further comprising a digital interface between the first input of the processor and the digital media signal source, the digital interface comprising one or more of a Universal Serial Bus (USB) interface, a WiFi interface, and a network port;
and a physical interface is further arranged between the second input end of the gate and the local media signal source, and the physical interface comprises one or more of a high-definition multimedia interface (HDMI) interface, a Digital Video Interface (DVI) interface and a display interface (DP) interface.
9. An LED display screen system, comprising: at least one of the first player and the second player, an LED display screen, and the LED controller of claims 1-8;
the first player is used for outputting a digital media signal as a digital media signal source; the second player is used for outputting the physical media signal as the physical media signal source.
10. A method of controlling an LED controller according to any one of claims 1 to 8, comprising:
connecting the digital media signal source with a first input end of the processor, connecting the local media signal source with a second input end of the gate, and connecting the LED display screen with an output end of the gate;
and selecting one path of media signal from the signals output by the digital media signal source and the local media signal source through the gate as a target media signal, and outputting the target media signal to the LED display screen for displaying.
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