CN213938205U - 4k composite video remote transmission device - Google Patents
4k composite video remote transmission device Download PDFInfo
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- CN213938205U CN213938205U CN202022678846.4U CN202022678846U CN213938205U CN 213938205 U CN213938205 U CN 213938205U CN 202022678846 U CN202022678846 U CN 202022678846U CN 213938205 U CN213938205 U CN 213938205U
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Abstract
The utility model provides a 4k composite video remote transmission device, which comprises an FPGA module, a video coding and decoding module, an SDI optical transmission module, a video module, an audio module, a data signal transmission module, a k signal module, a usb module and a network communication module; the SDI optical transmission module, the video module, the audio module, the data signal transmission module, the k signal module, the usb module and the network communication module are all connected with the FPGA module; the network communication module is also connected with a video coding and decoding module, and the video coding and decoding module is connected with the FPGA module; through setting communication and corresponding processing of each module, remote lossless of 4KP60 video and transmission of coded video are realized, audio and K signal sending and receiving and mutual communication of data, USB signals and network signals are realized synchronously, and application requirements of actual occasions are met.
Description
Technical Field
The utility model relates to a data transmission field especially relates to a 4k composite video remote transmission device.
Background
In the current society, 4k video has been widely applied to various fields, wherein the transmission interface of 4k video is generally an HDMI/DP interface, and is realized by corresponding video line transmission. Due to the limitation of the length of the video cable, remote transmission is difficult to realize, and the video cable can only be applied to short-distance transmission, so that the video cable is difficult to directly realize the remote transmission effect of the 4k video in the situations of large-scale remote video conferences, highway command centers, remote medical operation guidance and the like, and a mode for realizing the remote high-bandwidth video transmission is needed.
In order to solve the above problems, at present, 4k video transmission can be achieved through an encoding and decoding mode, including wired transmission using a network and wireless transmission of 5G signals after encoding and decoding, but whether wired or wireless transmission is adopted, encoding and decoding processing needs to be performed on the video in the video transmission process, so that the video delay is prolonged, real-time display is difficult to achieve, and on the other hand, the effect of the video after encoding and decoding is poor. However, the method using codec also has the advantages of low bandwidth requirement and convenient storage, and is therefore accepted by the public. Therefore, a long-distance video transmission system capable of realizing real-time transmission as much as possible and applying to the coding and decoding modules is needed.
Disclosure of Invention
The utility model aims at solving the not enough of prior art, provide a remote transmission device of 4k composite video, simple structure, convenient to use can realize remote video real-time transmission.
A4 k composite video remote transmission device comprises an FPGA module, a video coding and decoding module, an SDI optical transmission module, a video module, an audio module, a data signal transmission module, a k signal module, a usb module and a network communication module; the SDI optical transmission module, the video module, the audio module, the data signal transmission module, the k signal module, the usb module and the network communication module are all connected with the FPGA module; the network communication module is also connected with the video coding and decoding module, and the video coding and decoding module is connected with the FPGA module.
Further, the SDI optical transmission module comprises an SDI signal interface, and the SDI signal interface is connected with an external optical fiber; the SDI signal interface is connected with a serializer/deserializer of the FPGA module; the SDI signal interface is one or more paths; the SDI optical transmission module also comprises optical modules, wherein one SDI interface corresponds to one optical module, and the optical modules can convert electrical signals into optical signals to be output or convert optical signals into electrical signals to be input.
Further, the video module comprises a video interface, and the video interface is an HDMI interface or a DP interface; the video interface is one path or a plurality of paths.
Further, the audio module comprises an audio interface; an AD converter or a DA converter is arranged between the audio interface and the FPGA module.
Further, the data signal transmission module comprises a data signal interface; and a data conversion module is arranged between the data signal interface and the FPGA module.
Further, the k signal module comprises a k signal interface; and an input circuit or an output circuit is arranged between the k signal interface and the FPGA module.
Further, the usb module comprises a usb data interface; and a conversion circuit module is arranged between the usb data interface and the FPGA.
Further, the network communication module comprises a network communication interface; the maximum accommodating upper limit of the network communication interface is a kilomega bandwidth network; and a network port communication module is arranged between the network communication interface and the FPGA module.
Further, the encoding and decoding module performs encoding and decoding actions on the video to obtain a network signal or a video signal; the video signal directly realizes communication with the FPGA through a TTL level; the network signal is directly communicated with the FPGA or the network communication module.
Further, the specification of at least one optical module in the SDI optical transmission module is greater than or equal to 12G-SDI.
The utility model has the advantages that:
the SDI optical transmission module, the video module, the audio module, the data signal transmission module, the k signal module, the usb module and the network communication module are respectively connected with the FPGA module, so that the rapid transmission of remote videos is completed through optical fibers or network ports, and real-time output can be realized through the video module, the audio module and the k signal module, so that the requirements of practical application occasions are met;
by arranging the video coding and decoding module, the device not only can directly receive and decode video network signals through a network interface, but also can convert the video signals into network signals through coding to realize remote transmission communication and then decode and output;
the utility model discloses can be used as transmitter or receiver, if as the transmitter, then video interface, audio interface and k signal interface are as the input, include USB signal, data signal and network signal simultaneously, all realize the transmission of signal through optical interface SDI agreement, with the mode of other signal embedding SDI; if the optical interface is used as a receiver, the optical interface SDI is used for receiving optical signals, and simultaneously, corresponding signals such as video, data and the like are restored and output or are mutually communicated, and the video interface, the audio interface and the k signal interface are used as outputs; the USB signal, the data signal and the network signal are signals which realize input and output mutually no matter used as a transmitter or a receiver, and meanwhile, the transmission of the actual signal of the optical port is bidirectional.
Drawings
Fig. 1 is a schematic view of an overall connection according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of an embodiment of the present invention as a transmitter;
fig. 3 is a schematic diagram of a receiver according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.
The first embodiment is as follows:
as shown in fig. 1, a 4k composite video long-distance transmission device includes an FPGA module, a video codec module, an SDI optical transmission module, a video module, an audio module, a data signal transmission module, a k signal module, a usb module, and a network communication module. The SDI optical transmission module, the video module, the audio module, the data signal transmission module, the k signal module, the usb module and the network communication module are all connected with the FPGA module; the network communication module is also connected with the video coding and decoding module, and the video coding and decoding module is connected with the FPGA module. Wherein only one of the two network data of the video codec module of fig. 1 is selected.
The SDI optical transmission module comprises an SDI signal interface, the SDI signal interface is used for transmitting SDI signals, and the SDI signals are transmission signals in optical fibers. The SDI signal interface is connected with an external optical fiber to realize the long-distance transmission of the SDI signal; the SDI signal interface is connected with a serializer/deserializer (serdes) of the FPGA module to realize communication. The SDI signal interface in this embodiment can implement bidirectional communication, which may be symmetric bidirectional communication or asymmetric bidirectional communication. The SDI signal interface can be one path or multiple paths. The SDI optical transmission module also comprises an optical module, one SDI interface corresponds to one optical module, and the optical module can realize the conversion of electrical signals into optical signals for output or the conversion of optical signals into electrical signals for input.
The video module comprises a video interface, the video interface is an HDMI interface or a DP interface, the input and the output of video signals can be realized through the video interface, and the video signals input from the outside are directly transmitted to the FPGA module through a connecting line. The video interface may be one or more.
The audio module comprises an audio interface, the audio interface is used for transmitting analog signals, an AD converter or a DA converter is arranged between the audio interface and the FPGA module, the analog signals and the digital signals can be mutually converted and then output, the AD converter is arranged when the audio module is used as a transmitter, and the DA converter is arranged when the audio module is used as a receiver. The AD converter or DA converter is denoted as conversion 1 in the figure.
The data signal transmission module comprises a data signal interface, the data signal interface is used for transmitting data in formats of RS485, RS232, CAN and the like, a data conversion module is arranged between the data signal interface and the FPGA module, and the data conversion module is represented as conversion 2 in the attached drawing. The TTL level data communicated with the FPGA module in the pair can be converted into a corresponding data format through the data conversion module.
The k signal module comprises a k signal interface, and the k signal interface is used for inputting and outputting a k signal; where a transition 3 is provided between the k signal and the FPGA module. It should be noted that when the k signal is used as an input, the conversion circuit 3 is provided with a corresponding k signal input circuit; with the k signal as output, the switch 3 is provided with a corresponding k signal output circuit.
The usb module includes usb data interface, and usb data interface is traditional usb interface, and usb data interface can carry out two-way data transmission, and usb data interface connects outside equipment usually, including mouse keyboard etc.. A conversion circuit module is arranged between the usb data interface and the FPGA module, which is represented as conversion 4 in the figure, and usb to TTL level can be converted through the conversion circuit module. The usb data interface may be set to 1 or more.
The network communication module comprises a network communication interface, and the network communication interface is a traditional network interface. In this embodiment, the maximum upper limit of the network interface is a gigabit bandwidth network, which is capable of being downward compatible with a hundred-megabyte bandwidth network, wherein the bandwidth of the external connection network is determined by the SDI optical transmission module. An internet access communication module is arranged between the network communication interface and the FPGA module, the internet access communication module is represented as conversion 5 in the drawing, and external network signals are converted into formats which can be communicated with the FPGA through GMII, RGMII, MII, RMII and the like through the internet access communication module. The number of network communication interfaces may be one or more.
The video coding and decoding module is arranged between the network port communication module and the FPGA module. The video coding and decoding module can decode network signals received by the network communication interface or video related network signals received by the SDI signal interface and processed by the FPGA to obtain video signals through conversion, and the video signals are directly communicated with the FPGA through TTL levels; on the other hand, the video coding and decoding module can also code the video signal to obtain a network signal, the coded network signal can be directly output through a network communication interface or transmitted to the FPGA module, and the network signal is sent through an optical port after being processed. The video coding and decoding module adopts the coding and decoding modules of Haesi, TI or ST and other brands.
The FPGA module can complete interaction and internal data processing among an SDI signal interface, a video interface, an audio interface, a data signal interface, a k signal interface, a usb data interface, a network communication interface and a video coding and decoding module.
In this embodiment, it is necessary to complete the receiving and transmitting of the video with 4KP60, so at least one optical module with an SDI signal interface has a specification equal to or greater than 12G-SDI. The serdes rate of the opposite FPGA module can at least reach the transceiving of 12G high-speed signals, so that an FPGA chip of intel or xilinx (AMD) is adopted.
In practice, the module arrangement and connection structure described above can be applied to either the transmitter or the receiver, as shown in fig. 2 and 3. If the transmitter is used, the video interface, the audio interface and the k signal interface are used as input, the data signal interface, the usb data interface and the network communication interface are all in bidirectional data communication, the video signal is packaged through an SDI protocol, and other signals are embedded into an SDI and then transmitted out through an SDI optical signal; if the SDI optical signal interface is used as a receiver, video and other signals are synchronously decoded according to data received by the SDI optical signal interface, output and mutual communication are realized after relevant processing of the FPGA, and the video interface, the audio interface and the k signal interface are used as output. The data signal interface, usb data interface and network communication interface of the transmitter and receiver all maintain bidirectional data transmission, so the actual optical transmission is also bidirectional, only the bidirectional data is different, generally, the transmitter realizes lossless transmission of video, and the receiver realizes lossless reception of video. If 4kP60 video is transmitted, only the transmission speed of the optical fiber can meet the requirement of real-time transmission, so the transmission and reception of 4kP60 video is realized by the SDI optical signal in this embodiment. The video encoding module in fig. 2 indicates that the encoded video can be transmitted synchronously while the lossless video is transmitted, and the video decoding module in fig. 3 indicates that the output of the lossless video and the output of the decoded video can be realized. Wherein only one of the two network data of the video codec modules of fig. 2 and 3 is selected.
What need explain is foretell module and interface, including FPGA module, video coding and decoding module, SDI optical transmission module, video module, audio module, data signal transmission module, k signal module, usb module and network communication module etc. all are conventional modules, and its method of realizing self function is not the utility model discloses the content of protection, the utility model aims at providing a connected mode and connection structure between above-mentioned module and the interface and realize the method of transmission.
The above description is only one specific example of the present invention and does not constitute any limitation to the present invention. It will be apparent to those skilled in the art that various modifications and variations in form and detail may be made without departing from the principles and structures of the invention without departing from the spirit and scope of the invention, but such modifications and variations are within the purview of the appended claims.
Claims (10)
1. A4 k composite video remote transmission device is characterized by comprising an FPGA module, a video coding and decoding module, an SDI optical transmission module, a video module, an audio module, a data signal transmission module, a k signal module, a usb module and a network communication module; the SDI optical transmission module, the video module, the audio module, the data signal transmission module, the k signal module, the usb module and the network communication module are all connected with the FPGA module; the network communication module is also connected with the video coding and decoding module, and the video coding and decoding module is connected with the FPGA module.
2. The 4k composite video long-distance transmission device according to claim 1, wherein said SDI optical transmission module comprises an SDI signal interface, said SDI signal interface being connected to an external optical fiber; the SDI signal interface is connected with a serializer/deserializer of the FPGA module; the SDI signal interface is one or more paths; the SDI optical transmission module also comprises optical modules, wherein one SDI interface corresponds to one optical module, and the optical modules can convert electrical signals into optical signals to be output or convert optical signals into electrical signals to be input.
3. The device of claim 1, wherein the video module comprises a video interface, the video interface is an HDMI interface or a DP interface; the video interface is one path or a plurality of paths.
4. The device of claim 1, wherein said audio module comprises an audio interface; an AD converter or a DA converter is arranged between the audio interface and the FPGA module.
5. The device of claim 1, wherein said data signal transmission module comprises a data signal interface; and a data conversion module is arranged between the data signal interface and the FPGA module.
6. The device of claim 1, wherein said k signal module comprises a k signal interface; and an input circuit or an output circuit is arranged between the k signal interface and the FPGA module.
7. The device for long-distance transmission of 4k composite video according to claim 1, wherein said usb module comprises a usb data interface; and a conversion circuit module is arranged between the usb data interface and the FPGA.
8. The device for long-distance transmission of 4k composite video according to claim 1, wherein said network communication module comprises a network communication interface; the maximum accommodating upper limit of the network communication interface is a kilomega bandwidth network; and a network port communication module is arranged between the network communication interface and the FPGA module.
9. The device for long-distance transmission of 4k composite video according to claim 1, wherein said codec module performs video codec to obtain network signal or video signal; the video signal directly realizes communication with the FPGA through a TTL level; the network signal is directly communicated with the FPGA or the network communication module.
10. The long-distance transmission apparatus for 4k composite video according to claim 2, wherein at least one optical module of said SDI optical transmission module has a specification equal to or greater than 12G-SDI.
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| CN202022678846.4U CN213938205U (en) | 2020-11-18 | 2020-11-18 | 4k composite video remote transmission device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113727111A (en) * | 2021-08-31 | 2021-11-30 | 威创集团股份有限公司 | 4K high definition IP video is compiled and is separated integrative box and video transmission system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113727111A (en) * | 2021-08-31 | 2021-11-30 | 威创集团股份有限公司 | 4K high definition IP video is compiled and is separated integrative box and video transmission system |
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