CN216531603U

CN216531603U - Video transmitting device

Info

Publication number: CN216531603U
Application number: CN202123058347.6U
Authority: CN
Inventors: 李盟; 谯谊; 王孟; 赵阳生; 姚爽
Original assignee: Beijing Leyard Equipment Technology Co Ltd
Current assignee: Beijing Leyard Equipment Technology Co Ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-05-13
Anticipated expiration: 2031-12-07

Abstract

The application discloses video transmission device, display screen and display device, this video transmission device includes: the video signal interface comprises a first circuit board, a second circuit board, a video signal interface and an optical fiber signal interface which are arranged in a stacked mode; the first circuit board is electrically connected with the second circuit board, and the vertical projection of the second circuit board on the first circuit board is positioned in the first circuit board; the video signal interface is arranged on the first circuit board, and the optical fiber signal interface is arranged on the second circuit board; the video signal interface is used for receiving video signals, and the optical fiber signal interface is used for outputting optical fiber signals. The embodiment of the application provides a video sending device, a display screen and a display device, and adopts the structure of two stacked circuit boards, so that the size of the whole video sending device is smaller and more flexible, and the assembly requirements of various structures can be met.

Description

Video transmitting device

Technical Field

The present application relates to the field of signal processing technologies, and in particular, to a video transmitter, a display screen including the video receiver card, and a display device including the display screen.

Background

The video transmitting device is a necessary component of the display scheme realized by the LED (light Emitting diode) display screen, and the video signal is processed and converted into a form acceptable by the LED display screen by the video transmitting device and then transmitted to the LED display screen to display corresponding image information.

At present, the input and output of a video transmitter connected with an LED display screen generally adopt a standard video Interface connection cable transmission mode, wherein a High Definition Multimedia Interface (HDMI) is the most commonly used video transmission Interface. The video transmitting device with the HDMI output interface is taken as an example, video signals are output from the HDMI interface of the video transmitting device and transmitted to the LED display screen through cables, the video quality of HDMI transmission is high, but the traditional HDMI transmission line is influenced by the material, risks of electromagnetic radiation, unsatisfactory electromagnetic compatibility effect, information leakage and tampering exist, long-distance signal transmission cannot be met, and the problem of time delay of video signal transmission also exists in the cables.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem mentioned above or at least partially solve the technical problem mentioned above, an embodiment of the present application provides a video transmission apparatus including: the video signal interface comprises a first circuit board, a second circuit board, a video signal interface and an optical fiber signal interface which are arranged in a stacked mode;

the first circuit board is electrically connected with the second circuit board, and the vertical projection of the second circuit board on the first circuit board is positioned in the first circuit board;

the video signal interface is arranged on the first circuit board, and the optical fiber signal interface is arranged on the second circuit board;

the video signal interface is used for receiving video signals, and the optical fiber signal interface is used for outputting optical fiber signals.

Preferably, the device further comprises a network signal interface, and the network signal interface is arranged on the first circuit board.

Preferably, the network signal interface is electrically connected with the optical fiber signal interface.

Preferably, the video processing device further comprises a video processing chip, wherein the video processing chip is arranged on the first circuit board, and the video processing chip is used for splitting, copying or standard conversion of the video signal.

Preferably, the video processing chip further comprises a screen adjusting module, and the screen adjusting module is arranged on the video processing chip.

Preferably, a single said video signal interface is electrically connected to at least one said fibre optic signal interface.

Preferably, the optical fiber signal interface comprises an optical module electrical socket and an optical module, and the optical module is electrically connected with the optical module electrical socket; the optical module is used for converting an electric signal into the optical fiber signal.

Preferably, the optical module includes a signal line and a plug, the plug is connected to the optical module electrical socket in a matching manner, and the signal line is provided with an aerial plug or an optical fiber connector.

The embodiment of the application also provides a display screen, and the display screen comprises the video sending device provided by the embodiment of the application.

The embodiment of the application also provides a display device which comprises the display screen provided by the embodiment of the application.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

the embodiment of the application provides a video sending device, a display screen and a display device, and adopts the structure of two stacked circuit boards, so that the size of the whole video sending device is smaller and more flexible, and the assembly requirements of various structures can be met.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a video transmitting apparatus according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of the optical module electrical socket shown in fig. 1;

fig. 3 is a schematic structural diagram of the optical module shown in fig. 1;

fig. 4 is a schematic structural diagram of an optical module according to an embodiment of the present application.

Detailed Description

In order that the above-mentioned objects, features and advantages of the present application may be more clearly understood, the solution of the present application will be further described below. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein; it is to be understood that the embodiments described in this specification are only some embodiments of the present application and not all embodiments.

Fig. 1 is a schematic structural diagram of a video transmitting apparatus according to an embodiment of the present application, and as shown in fig. 1, the video transmitting apparatus 1 includes: the device comprises a first circuit board 2, a second circuit board 3, a video signal interface 4 and an optical fiber signal interface 5 which are arranged in a stacked mode; the first circuit board 2 is electrically connected with the second circuit board 3, and the vertical projection of the second circuit board 3 on the first circuit board 2 is positioned in the first circuit board 2; the video signal interface 4 is arranged on the first circuit board 2, and the optical fiber signal interface 4 is arranged on the second circuit board 3; the video signal interface 4 is used for receiving video signals, and the optical fiber signal interface 5 is used for outputting optical fiber signals.

The embodiment of the application provides a video transmitting device, adopts the structure of range upon range of two circuit boards for whole video transmitting device size is small and exquisite more, nimble, can satisfy the assembly requirement of multiple structure. And the video signal interface is used for receiving video signals, and the optical fiber signal interface is used for outputting optical fiber signals, so that the video transmitting device is more widely applied.

In some embodiments, as shown in fig. 1, the video transmitting apparatus 1 further includes, for example, a network signal interface 6, and the network signal interface 6 is disposed on the first circuit board 2. The RJ45 interface is one type of network signal interface 6.

The video transmitting device provided by the embodiment of the application comprises a network signal interface for receiving network signals, and the function of network signal transmission is integrated in the video transmitting device, so that a signal switch can be omitted, and the components of the whole video transmitting device can be simplified.

In some embodiments, as shown in fig. 1, the video transmitting apparatus 1 further includes, for example, a video processing chip 7 and a screen adjusting module 8, the video processing chip 7 is disposed on the first circuit board 2, and the video processing chip 7 is configured to split, copy or convert the video signal into a standard. A screen adjustment module 8 is provided on the video processing chip 7, the screen adjustment module 8 having an on-screen display (OSD) function.

In some embodiments, the number of the optical fiber signal interfaces 5 may be 1, 2, 3, 4, etc., and as shown in fig. 1, the video transmission apparatus 1 includes 4 optical fiber signal interfaces 5. The optical fiber signal interfaces 5 may be specifically set according to the requirements of circuit design on the video transmitting apparatus 1, and the number of the optical fiber signal interfaces 5 is not limited in the present application.

In some embodiments, the fiber optic signal interface 5 may be disposed anywhere on the second circuit board 3, for example. The position of the optical fiber signal interface 5 is set according to the requirements of circuit design on the second circuit board 3, and the position of the optical fiber signal interface 5 on the second circuit board 3 is not limited in the present application.

In some embodiments, as shown in fig. 1, the optical fiber signal interface 5 includes an optical module electrical socket 9 and an optical module 10, and in conjunction with fig. 2 and fig. 3, fig. 2 is a schematic structural diagram of the optical module electrical socket shown in fig. 1; fig. 3 is a schematic structural diagram of the optical module shown in fig. 1; referring to the structures shown in fig. 1, 2 and 3, the optical module 10 is electrically connected to an optical module electrical socket 9, the optical module electrical socket 9 is disposed on the second circuit board 3, and the optical module 10 is configured to convert an optical fiber signal into an electrical signal. Preferably, the optical module electrical receptacle 9 may be, for example, a Quad Small Form-factor plug (QSFP).

In some embodiments, as shown in fig. 3, for example, 2 photoelectric signal conversion elements 11 are further included on the optical module 10, and the photoelectric signal conversion elements 11 are used for converting an electrical signal into an optical fiber signal.

In some embodiments, as shown in fig. 4, fig. 4 is a schematic structural diagram of an optical module provided in an embodiment of the present application, referring to the structure in fig. 4, an optical module 10 includes a signal line 12 and a plug 13, the plug 13 may be in mating connection with an electrical socket of the optical module, an aerial plug 14 is disposed on the signal line 12, and the aerial plug 14 may be connected to a video receiving device.

In some embodiments, the signal line 12 is provided with, for example, a fiber optic connector that can be connected to a video transmission device.

In some embodiments, the Video signal interface 4 may include, for example, at least one of an HDMI interface, a DP interface, a DVI interface, a VGA interface, an SDI interface, and an S-Video interface. In the embodiment of the application, the video signal interface adopts various specifications, so that the application range of the video receiving device can be improved.

In some embodiments, the first circuit board 2 of the video transmitting apparatus 1 further comprises at least one protocol signal interface for receiving a signal protocol, for example. The protocol signal interface may be at least one of an RS 2321 interface, an RS 2322 interface, an I2C 1 interface, an I2C 2 interface, and a GOIO interface, for example.

The video sending device provided by the embodiment of the application comprises protocol signal interfaces with various specifications for receiving signal protocols, can realize control of various protocols on hardware, sends instructions to a front-end circuit, realizes various functions, and is easy for embedded system integration and secondary development.

In some embodiments, the video processing chip 7 is used to split, copy or standard convert the video signal. Specifically, splitting the video signal refers to splitting the video signal into images according to the number of output channels, and configuring the resolution of each output video, for example, a video signal with a resolution of 4K is split into a video signal with a resolution of 4 channels and 2K, and a video signal with a resolution of 2K is split into video signals with a resolution of 4 channels 960 × 540. The duplication of the video signal means that the duplication is also called frequency division, and the source video signal is duplicated into a plurality of paths of the same video signals to be output. The standard conversion of the video signal means that the source video signal is converted into a video signal with standard resolution and refresh rate through compression, amplification and other processes.

In some embodiments, a single video signal interface 4 is electrically connected to at least one fiber optic signal interface 5. The video processing chip 7 is used for splitting, copying or converting a source video signal into a plurality of video signals in a standard mode and sending the video signals to the optical fiber signal interface 5, the optical module 10 in the optical fiber signal interface 5 converts the video signals into optical fiber signals to be output, wherein the plurality of paths of video signals output by the video processing chip 7 are respectively electrically connected with the optical fiber signal interfaces in a one-to-one correspondence mode, and one optical fiber signal interface can receive one path of video signals output by the video processing chip 7.

Illustratively, 4 standard HDMI interfaces are arranged on the first circuit board 2 of the video transmitter 1, and the video transmitter 1 can simultaneously receive 4 video source signals, and can receive a video signal with a maximum 4K resolution and a refresh rate of 30 Hz. The video processing chip 7 designs 4 paths of HDMI video signals to be output to the optical fiber signal interface 5, converts the 4 paths of HDMI video signals into optical fiber signals through the optical fiber signal interface 5, and transmits the optical fiber signals through Multi-fiber pushon (MPO) optical fibers.

For example, the video processing chip 7 is configured to split the video signal, and after 1 source video signal is selected from the 4 input source video signals and standard integration is performed, all the video signals are split into 4 video signals, for example, the integrated 2K resolution video signal can be split into 4 video signals with 960 × 540 resolution. Or the video signal with the resolution of 4K can be split into 4 paths of video signals with the resolution of 2K for output. At this time, 1 video signal interface is electrically connected with 4 optical fiber signal interfaces in a one-to-one correspondence manner.

Illustratively, the video processing chip 7 is used for copying the video signals, and after selecting 1 path of source video signals from the 4 paths of input source video signals for standard integration, copying the source video signals into 4 paths of video signals for output; for example, the copied video signal is a 2K resolution, 60Hz refresh rate or a 4K resolution, 30Hz refresh rate video signal. At this time, 1 video signal interface is electrically connected with 4 optical fiber signal interfaces in a one-to-one correspondence manner.

Illustratively, the video processing chip 7 is configured to perform standard conversion on the video signal, and perform standard integration on 4 input source video signals at the same time and then perform 4 video signal output at the same time, for example, the standard integrated video signal is a video signal with a 2K resolution, a 60Hz refresh rate, or a 4K resolution, a 30Hz refresh rate. At this time, the 4 video signal interfaces are respectively electrically connected with the 4 optical fiber signal interfaces in a one-to-one correspondence manner.

In some embodiments, the network signal interface 6 is electrically connected to the fiber optic signal interface 5. The video transmission device 1 further includes, for example, a Gigabit Port Physical Layer (GPHY) chip configured to distribute a network signal received by the network signal interface 6 into a plurality of network control signals and transmit the network control signals to the optical fiber signal interface 5. In some embodiments, a single network signal interface 6 electrically connects a plurality of fiber optic signal interfaces 5.

Each optical fiber signal interface can receive a video signal sent by the video processing chip, so that each optical fiber signal interface can simultaneously receive a video signal and a network control signal and integrate the video signal and the network control signal into an optical fiber signal for output.

Illustratively, 4 paths of HDMI video signals processed by the video processing chip and network control signals distributed into 4 paths are transmitted to the optical fiber signal interface, the network control signals are transcoded by the physical interface transceiver, the 1 path of HDMI video signals and the 1 path of transcoded network signals are combined and transmitted to the QSFP socket and transmitted to the optical module to be modulated into optical fiber signals to be output through MPO optical fibers, and the second circuit board is provided with 4 QSFP sockets which can be connected with 4 optical modules to realize the simultaneous output of the same 4 paths of MPO optical fiber signals. The optical module can realize the simultaneous transparent transmission of HDMI video signals and hundred-mega Ethernet signals.

The video transmitting device provided by the embodiment of the application adopts an optical fiber signal output mode, integrates a video signal and a network control signal into one path of optical fiber signal for output, and realizes the function of broadcasting and distributing the network control signal besides completing the basic video processing function, so that the structure of a network switch is omitted in the process of engineering installation, and the structural devices of the whole video transmitting device are simplified.

In some embodiments, a screen adjustment module 8 is disposed on the video processing chip 7, the screen adjustment module 8 having an on-screen display (OSD) function. The video processing chip 7 can be, for example, an MS1825 chip, which has 4 input and output independent HDMI channels, can support video signals with a maximum resolution of 4K and a refresh rate of 30Hz, has functions of scaling and frame rate conversion, and has a memory supporting transmission modes of SDR and DDR, and adopts an I2C bus programming interface, and the access rate can reach 400 Kb/s; the chip also has the intelligent image processing functions of black/white enhancement, transition color enhancement, dynamic image edge enhancement, brightness, saturation, contrast, chromaticity adjustment and the like. And each path of video signal output by the chip is internally provided with a programmable OSD window, each path of video output signal is added with OSD information, the OSD display function is realized by a screen adjusting module 8 which is internally arranged in a video processing chip MS1825, and the display information is set through programming.

Illustratively, when the video signal is subjected to brightness adjustment and video switching, the OSD display information may automatically pop up on the display screen, and disappear after setting the no-operation duration for 5 s.

In some embodiments, the video transmitter 1 further includes a Micro Controller Unit (MCU) disposed on the first circuit board 2, a General-purpose input/output (GPIO) connector, a General-purpose input/output (GPIO) interface, a GPIO interface, a Gigabit Port Physical Layer (GPHY) chip, a PHY protocol stack chip (PHY), and a Physical interface transceiver (PHY) disposed on the second circuit board 3, the PHY interface transceiver and the optical fiber signal interface being electrically connected in a one-to-one correspondence. The number of the physical interface transceivers is set according to the number of the optical fiber signal interfaces, which is not limited in the present application.

Exemplarily, the GPHY chip is a YT8521SH chip; the MCU chip is a GD32F103RCT6 chip; the PHY protocol stack chip is a CH395Q chip; the RS232 transceiver chip is an SIT3232EEUE chip; the GPHY chip YT8618H is a GPHY chip with a 100 fuse-t 8 port; the number of GPIO interfaces arranged on the MCU chip is up to 51; the protocol signal interface comprises an I2C interface and an SPI interface; the PHY protocol stack chip is internally provided with an Ethernet medium transmission layer and a physical layer, a TCP/IP protocol cluster is arranged in the PHY protocol stack chip, supports IPv4, DHCP, ARP, ICMP, IGMP, UDP and TCP protocols, and is used for the micro control processor system to carry out Ethernet communication.

Illustratively, the first circuit board 2 is further provided with a key interface, which may be, for example, a GPIO interface, and the key interface is used for implementing an OSD screen adjustment function. The trigger signal of the key control function is led out by a GPIO connector on the first circuit board and is connected to an MCU port to realize the function, the trigger signal is effective in low level, and the functions of brightness adjustment, input video channel switching and the like can be realized by triggering a corresponding pin, wherein the GPIO interface is arranged on the MCU chip. The GPIO connector can be, for example, JL4-6 ZJW. The key trigger signal is coded into an SPI signal by an MCU, the SPI signal is converted into a UDP protocol signal through a PHY protocol stack chip, then the UDP protocol signal is sent to a GPHY chip, and the UDP signal is distributed to an optical fiber signal interface through the GPHY chip in 4 paths and converted into an optical fiber signal.

Illustratively, the network signal interface 6 is an RJ45 interface, and the RJ45 interface is connected to the GPHY chip, the PHY chip, and the optical fiber signal interface in turn, so as to distribute the network signal into 4 networks of network control signals and transmit the network control signals to the optical fiber signal interface 5.

The control function of the protocol signal is also transmitted by the network signal after being transcoded. Specifically, the RS232 protocol signal is connected to the MCU via an RS232 transceiver chip; the GPIO interface is connected to an MCU port, the key trigger function and the RS232 protocol signal instruction information are coded into SPI signals by the MCU, and the SPI signals are converted into UDP protocol signals through a PHY protocol stack chip and are sent to a GPHY chip; the GPHY chip distributes the signals into 4 paths of signals, the 4 paths of signals are sent to a PHY chip on a second circuit board, the PHY chip transcodes the signals into SFP (Small Form-factor plug) signals, and the PHY chip converts the SFP signals into optical fiber signals through an optical module. And each path of network control signal and one path of video signal are combined into one path of optical fiber signal for transmission.

In some embodiments, the first circuit board and the second circuit board are connected using a board-to-board connector, which may include, for example, a BHSF08-275V07G10T socket and a BHSM08-275V05G10T plug, which may transmit, for example, a rated current of 2.2A/Pin, a rated voltage of 220V, and a signal transmission rate of 24 Gbps. For example, the socket and the plug can be respectively arranged on the first circuit board and the second circuit board, so that the first circuit board and the second circuit board can be connected in a point mode.

The video transmitting device provided by the embodiment of the application realizes that one path of MPO optical fiber simultaneously transmits video signals and network control signals, greatly simplifies engineering installation, does not need to build cables for videos and control signals respectively, and meanwhile, the board card is small in appearance size and flexible, and can meet the assembly requirements of various structures. Meanwhile, OSD display, a protocol signal instruction control mode and a GPIO interface key control mode are integrated, a plurality of embedded interfaces are reserved, and secondary development is easy.

The embodiment of the application also provides a display screen, and the display screen comprises the video sending device provided by the embodiment of the application. In some embodiments, the display screen may be, for example, an LED display screen.

The above detailed description is given to a video sending apparatus, a display screen, and a display apparatus provided in the embodiments of the present application, and specific examples are applied herein to explain the principles and embodiments of the present application, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A video transmission apparatus, comprising: the video signal interface comprises a first circuit board, a second circuit board, a video signal interface and an optical fiber signal interface which are arranged in a stacked mode;

2. The apparatus of claim 1, further comprising a network signal interface disposed on the first circuit board.

3. The apparatus of claim 2, wherein the network signal interface is electrically connected to the fiber optic signal interface.

4. The apparatus of claim 1, further comprising a video processing chip disposed on the first circuit board, the video processing chip being configured to split, copy or convert the video signal to a standard.

5. The apparatus of claim 4, further comprising a screen adjustment module disposed on the video processing chip.

6. The apparatus of claim 1, wherein a single said video signal interface is electrically connected to at least one said fiber optic signal interface.

7. The apparatus of claim 1, wherein the fiber optic signal interface comprises a light module electrical receptacle and a light module, the light module electrically connected with the light module electrical receptacle;

the optical module is used for converting an electric signal into the optical fiber signal.

8. The apparatus of claim 7, wherein the optical module comprises a signal wire and a plug, the plug is connected with the optical module electrical socket in a matching manner, and an aerial plug or an optical fiber connector is arranged on the signal wire.