CN207869252U - 4K direct-broadcasting code stream transmission control unit (TCU)s based on high resolution audio and video live broadcast system - Google Patents

Abstract

The utility model provides a kind of 4K direct-broadcasting code stream transmission control unit (TCU)s based on high resolution audio and video live broadcast system, including 3 USB HUB chips, 3 USB3.0 OTG PHY chips, fpga chip, MPU processor chips, dram chip, Ethernet PHY chip, WIFI digital transmission modules and 4G/5G communication modules, 3 USB HUB chips are respectively electrically connected by a USB3.0 OTG PHY chip with fpga chip respectively, and the fpga chip is electrically connected with MPU processor chips, dram chip, Ethernet PHY chip respectively.This 4K direct-broadcasting code stream transmission control unit (TCU)s handle audio-video code stream, are connected on internet by WIFI digital transmission modules, 4G/5G communication modules or wired Ethernet, are accessed to webcast website, ensure that direct-broadcasting code stream efficiency of transmission and transmission quality.

Description

4K direct-broadcasting code stream transmission control unit (TCU)s based on high resolution audio and video live broadcast system

Technical field

The utility model belongs to HD video live streaming field, more particularly, to a kind of based on high resolution audio and video live broadcast system 4K direct-broadcasting code stream transmission control unit (TCU)s.

Background technology

With the arriving from Media Era, the rapid development of network direct broadcasting technology, function is maked rapid progress.Traditional mobile phone self-timer Live streaming the problems such as resolution ratio, sound quality image quality, is gradually unsatisfactory for the demand of middle and high end live streaming application due to clarity, but traditional Equipment is broadcast live due to equipment complexity in broadcast level, and weight is very big, cannot be satisfied the demand of varied especially outdoor live streaming.It is based on The above problem researches and develops a kind of portable 4K high resolution audio and videos live broadcast system with regard to most important, and researching and developing a kind of can meet high voiceless sound The 4K direct-broadcasting code stream transmission control unit (TCU)s of video living transmission system are a urgent problems to be solved.

Invention content

In view of this, the utility model is directed to a kind of 4K direct-broadcasting code streams transmission based on high resolution audio and video live broadcast system Controller can be handled audio-video code stream.

In order to achieve the above objectives, the technical solution of the utility model is realized in：

A kind of 4K direct-broadcasting code stream transmission control unit (TCU)s based on high resolution audio and video live broadcast system, including 3 USB HUB chips, 3 Piece USB3.0OTG PHY chips, fpga chip, MPU processor chips, dram chip, Ethernet PHY chip, WIFI numbers pass mould Block and 4G/5G communication modules, 3 USB HUB chips respectively pass through a USB3.0OTG PHY chip and fpga chip respectively Electrical connection, one of USB HUB chips are electrically connected by USB3.0 interfaces with 4K audio and video Senthesizer modules, and USB3.0 is passed through Interface is electrically connected with 4K-H265 coder modules, another USB HUB chip by USB3.0 interfaces connect smart mobile phone and/ Or laptop computer, third USB HUB chips are electrically connected with WIFI digital transmission modules and 4G/5G communication modules, the fpga chip It is electrically connected respectively with MPU processor chips, dram chip, Ethernet PHY chip.

Further, the fpga chip include 3 USB3.0 control circuits, DDR control circuits, DMAC control circuits, Ethernet MAC control circuits, the Ethernet MAC control circuits are electrically connected with Ethernet PHY chip, the DDR controls Circuit processed is electrically connected with dram chip, 3 USB3.0 control circuits respectively respectively with a USB3.0OTG PHY chip phase Even.

Further, the USB HUB chips are the U.S. microchip Products USB5533B, USB3.0OTG PHY Chip is U.S. cypress products C YUSB3014, and fpga chip is U.S. xilinx products xc5VLC550, MPU processor core Piece is Samsung of South Korea chip product Exynos-4412, and dram chip is Samsung of South Korea chip product K4T1G164QF, Ethernet PHY chip is that the U.S. Marvell Products 88E1340S-BAM2, WIFI digital transmission module are the production of Shanghai Le Xin companies Product ESP8266,4G/5G communication module is Huawei ME909s, and USB3.0 control circuits are Synopsys companies of U.S. IP products Dwc_usb3.0_ctl, DDR control circuit are U.S. Synopsys companies IP products dwc_ddr23l_mctl, DMAC control electricity Road is that U.S.'s Synopsys companies IP products dwc_amba_dmac, Ethernet MAC control circuits are U.S. Synopsys public affairs Take charge of IP products dwc_ethernet_ahb.

Compared with the existing technology, the 4K direct-broadcasting code streams transmission described in the utility model based on high resolution audio and video live broadcast system Controller has the advantage that：The utility model provides this 4K direct-broadcasting code streams suitable for high resolution audio and video live broadcast system and passes Defeated controller, handles audio-video code stream, is connected by WIFI digital transmission modules, 4G/5G communication modules or wired Ethernet It is connected on internet, accesses to webcast website, ensure that direct-broadcasting code stream efficiency of transmission and transmission quality.

Description of the drawings

The attached drawing for constituting the part of the utility model is used to provide a further understanding of the present invention, this practicality is new The illustrative embodiments and their description of type are not constituted improper limits to the present invention for explaining the utility model. In attached drawing：

Fig. 1 is portable 4K high resolution audio and videos live broadcast system schematic diagram.

Fig. 2 is 4K-HDMI extended lines transmitter and SOC chip schematic diagram.

Fig. 3 is that 4K-HDMI extends line receiver and SOC chip schematic diagram.

Fig. 4 is that 4K-8 inputs audio and video synthesizer and SOC chip schematic diagram.

Fig. 5 is 4K-H265 encoders and SOC chip schematic diagram.

Fig. 6 is 4K direct-broadcasting code stream transmission control unit (TCU) schematic diagrams.

Fig. 7 is power supply module schematic diagram.

Fig. 8 is Rapid-4K signal node compositions.

Specific implementation mode

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

As shown in Figure 1, a kind of portable 4K high resolution audio and videos live broadcast system, including 4K-HDMI extends transmitter, 4K sounds regard Frequency main broadcaster's console.4K audio and video main broadcaster's console include power supply module, 4K audio and video Senthesizer module and respectively with The 4K-HDMI of 4K audio and video Senthesizer modules electrical connection extends receiver module, 4K-H265 coder modules, 4K direct-broadcasting code streams Collected high-definition audio-video information is transmitted to 4K-HDMI by transmission control unit (TCU) module, 4K high-definition cameras by HDMI cable Extend on transmitter, the 4K-HDMI extends transmitter and extends receiver module by Cat.6 Ethernet cables and 4K-HDMI It is connected, 4K-HDMI, which extends transmitter, to carry out lossless compression to audio-video signal and recompile, and Cat.6 is utilized after enhancing power 3 twisted-pair feeders inside Ethernet cable are transmitted to 4K audio and video main broadcaster's consoles, and the 4K-H265 coder modules and 4K are straight The electrical connection of bit stream controller module is broadcast, the 4K direct-broadcasting code streams transmission control unit (TCU) module connects upper by USB3.0 cables Machine (smart mobile phone or laptop computer).The collected high-definition audio-video information of 4K high-definition cameras can also pass through HDMI cable The 4K audio and video Senthesizer modules being transferred directly in 4K audio and video main broadcaster's consoles.

Turn 12V charging circuits, 12V/20AH lithium battery groups, 12V turn as shown in fig. 7, the power supply module includes 220V 220V inverter circuits, this power supply module can use external 220V AC powers to power, while be internal 12V/20AH lithium batteries Group charging；The alternating current of 220V can also be independently converted by inverter circuit using 12V/20AH lithium battery groups, is other 220V The power supply of city electric equipment.This power supply module both can be 4K audio and video main broadcaster's console power itselfs, can also be taking the photograph for outside Camera, holder, 4K-HDMI extend transmitter power supply, while can also be that smart mobile phone and laptop computer are powered, to adapt to field Living broadcast environment.

This system operation principle is as follows：

1. setting up seat in the plane

At live streaming scene, photographer, which fixes or moves, has set up 4K high-definition cameras and holder, while finding suitable position Placement location 4K audio and video main broadcaster's consoles.

2. on line

If 4K high-definition cameras are relatively close (within 10 meters) from 4K audio and video main broadcasters console, HDMI wire can be directly used Both connected with direct current supply line；If 4K high-definition cameras are farther out (10 meters -200 meters) from 4K audio and video main broadcasters console, just It needs that 4K-HDMI extension transmitters are added, 4K high-definition cameras HDMI wire is first connected to 4K-HDMI extensions with direct current supply line Transmitter, then extend transmitter and 4K audio and video main broadcaster's consoles with Cat6 ethernet lines connection 4K-HDMI.Use USB3.0 simultaneously Cable connects 4K audio and video main broadcaster consoles and smart mobile phone, USB3.0 cables can also be used to connect 4K audio and video main broadcaster's consoles And laptop computer

3. power supply

The built-in lithium battery of a 12V/20AH of 4K audio and video main broadcasters console, for 4K audio and video main broadcasters console from Can also be that the video camera, holder, 4K-HDMI of outside extend transmitter power supply, while or intelligence while body is powered Mobile phone and laptop computer power supply, to adapt to field living broadcast environment.4K audio and video main broadcasters console can also use the external cities 220V Electricity is internal cell charging and is other equipment power supply.

4. signal processing flow

The collected high-definition audio-video information of 4K high-definition cameras is transmitted to through HDMI2.0 agreements by HDMI cable 4K-HDMI extends on transmitter, and 4K-HDMI, which extends transmitter, to carry out lossless compression to audio-video signal and recompile, and enhances After power 4K audio and video main broadcaster's consoles are transmitted to using 3 twisted-pair feeders inside Cat.6.

It is straight by HDMI cable that the collected high-definition audio-video information of 4K high-definition cameras can also penetrate HDMI2.0 agreements It connects and is transmitted to 4K audio and video main broadcaster's consoles.

4K audio and video main broadcaster consoles can support 4 road 4K-HDMI to extend the direct HDMI inputs of transmitter input and 4 tunnels.

4K-HDMI extends the signal of transmitter transmitting, is connect by the 4K-HDMI extensions inside 4K audio and video main broadcaster's consoles After receiving the decoding of device module, decompression, reduction framing, the signal of HDMI2.0 agreements is reverted to, with the letter of the direct HDMI inputs in 4 tunnels Number together, the 4K audio and video Senthesizer modules being input to inside 4K audio and video main broadcaster's consoles.

The order that 4K audio and video Senthesizer module will be sent out according to host computer (smart mobile phone or laptop computer) carries out sound and regards The switching of frequency, scaling and splicing, and it is superimposed background, subtitle, figure and image, HDMI2.0 signals all the way are formed, 4K- is output to H265 coder modules.

4K-H265 coder modules carry out compression H.264/H.265 to the roads synthesis Hou Zhe signal, will be compressed Data form file, are written in HDD hard disks by SATA2 agreements.Transmit data to 4K direct-broadcasting code stream transmission control unit (TCU)s simultaneously In module.

The interconnection that 4K direct-broadcasting code stream transmission control unit (TCU)s module can directly be connected data file by Wifi or 4G modules Net is sent in the server of live streaming website；4K direct-broadcasting code stream transmission control unit (TCU)s module can also connect intelligence by USB3.0 interfaces It can mobile phone or laptop computer.Oneself can be invented USB and extend out pickup camera by 4K direct-broadcasting code streams transmission control unit (TCU) module at this time, Live streaming APP or live streaming software are directly logged on smart mobile phone or laptop computer, you can be broadcast live interaction.

5. main broadcaster controls

After 4K direct-broadcasting code stream transmission control unit (TCU)s module can also connect smart mobile phone or laptop computer by USB3.0 interfaces, Broadcast Control APP or Broadcast Control software can also be started, broadcast control is carried out to 4K audio and video main broadcaster consoles, including control holder turns Dynamic, audio-video source switching, scaling and splicing, and it is superimposed background, subtitle, figure and image；Adjust compression ratio, setting live streaming website Deng operation.

As shown in Fig. 2, it includes 4K-HDMI extended line TX SOC chips, TITAN carrier waves that the 4K-HDMI, which extends transmitter, Transparent transmission module, DC-DC reduction voltage circuits and isolating transformer, 4K high-definition cameras penetrate collected high-definition audio-video information HDMI2.0 agreements are transmitted to by HDMI cable, HDMI sockets in 4K-HDMI extended line TX SOC chips, 4K-HDMI extended lines TX SOC chips are by its internal HDMI2.0 decoding circuit, again through space compressor circuit, framer circuit, FEC coding circuits After carrying out 8b/10b transformation, into 10G Serdes transmission circuits, the Rapid-4K signals of 3 pairs of high-speed-differentials, warp are so far formed After crossing isolating transformer, it is sent in Cat.6 cables by RJ45 sockets；In the 72V DC power-supply circuits of the Cat.6 cables It is mixed with the reverse control signal of BPSK carrier waves all the way, signal is controlled by having solved RS485 after TITAN carrier wave transparent transmission modules, It is output to the tripod head equipment outside 4K-HDMI extension transmitters by RS485 sockets；The 72V direct current supplys of the Cat.6 cables After circuit passes sequentially through RJ45 sockets, isolating transformer, DC-DC reduction voltage circuits, 12V DC power supply is exported by direct current jack. The MD65535 of described 4K-HDMI extended lines TX SOC chip models Tianjin Yi Hua Microtronic A/S.The TITAN carrier waves are saturating Transmission module is the TTN120500 of Tianjin Yi Hua Microtronic A/S.The DC-DC reduction voltage circuits are the MHB75- of Shanghai Le Ziming latitudes 48S12。

As shown in figure 8, one 4 pairs of twisted-pair feeders are shared in the Cat.6 cables, wherein 3 pairs are defined as Rapid-4K signal wires, Another 1 pair is defined as Papid-4K power cords, this power cord is 72V DC power supplies while being superimposed bpsk carrier signals.

The operation principle that this 4K-HDMI extends transmitter is as follows：

1. connection

4K high-definition cameras are connected with HDMI cable and 4K-HDMI extends transmitter；With RS485 cables connection holder and 4K-HDMI extends transmitter；Extend transmitter with direct current cable connection 4K high-definition cameras, holder and 4K-HDMI；It uses again Cat.6 cables connect 4K-HDMI and extend transmitter and 4K audio and video main broadcaster's consoles.

2. power supply

4K-HDMI extends 72V direct current supply of the power supply of transmitter on Cat.6 cables, and DC power supply passes through inside DC-DC reduction voltage circuits, be converted into 12V power supplys, itself and external equipment use altogether.4K high-definition cameras and holder use 4K- HDMI extends the 12V power supplys that transmitter provides.

3. audio/video flow

The collected high-definition audio-video information of 4K high-definition cameras is through HDMI2.0 agreements by connecting HDMI cable transmission Extend to 4K-HDMI in the 4K-HDMI extended line TX SOC chips of transmitter, this chip is by HDMI2.0 decoding circuits, then After space compressor circuit, framer circuit, FEC coding circuits carry out 8b/10b transformation again, electricity is sent into 10G Serdes Road so far forms the Rapid-4K signals of 3 pairs of high-speed-differentials, after 4K-HDMI extends transmitter isolating transformer, passes through RJ45 Socket is sent in Cat.6 cables.

4.RS485 Reverse Turning Control streams

It is mixed with the reverse control signal of BPSK carrier waves all the way in the 72V DC power-supply circuits of Cat.6, is carried by TITAN RS485 control signals have been solved after wave transparent transmission module, by RS485 sockets, the cloud being output to outside 4K-HDMI extension transmitters Platform equipment.

As shown in figure 3, it includes 4K-HDMI extended line RX SOC chips, TITAN that the 4K-HDMI, which extends receiver module, Carrier wave transparent transmission module, DC-DC booster circuit and isolating transformer, Cat.6 cables connect isolating transformer by RJ45 sockets, 3 pairs of Rapid-4K differential signals in Cat.6 cables are by being input to 4K-HDMI extended line RX SOC chips after isolating transformer It is interior, restore Rapid-4K's after 10G Serdes receiving circuits are by Cdr Clock Extractions into 10G Serdes receiving circuits Data, into decompression circuit of entering a profession, are reduced into initial intact after 10b/8b transformation, fec decoder circuit, deframer circuitry Audio-video signal, then using HDMI2.0 coding circuits, the HDMI2.0 signals for being encoded into standard are sent to HDMI and patch It is exported on part.The 4K-HDMI extends the power supply of receiver from the 12V DC power supply being externally supplied, and 12V DC power supply passes through Direct current jack enters DC-DC booster circuit and is converted into 72V power supplys, is coupled with the carrier signal of TITAN carrier wave transparent transmission modules output The power supply signal for forming Rapid-4K afterwards, passes sequentially through isolating transformer and RJ45 sockets is sent on Cat.6 cables.External RS-485 signals are input to TITAN carrier wave transparent transmission modules by RS485 cables by RS485 sockets, pass through TITAN carrier wave transparent transmission moulds Block coding generates BPSK carrier waves all the way, is coupled on 72V DC power supplies as reverse control signal, the power supply as Rapid-4K Signal passes sequentially through on isolating transformer and RJ45 sockets output Cat.6 cables, and remote equipment is controlled as control signal.It is described The MD65536 of 4K-HDMI extended line RX SOC chip models Tianjin Yi Hua Microtronic A/S.The TITAN carrier waves transparent transmission mould Block is the TTN120500 of Tianjin Yi Hua Microtronic A/S.The DC-DC booster circuit is the MHB48- of Shanghai Le Ziming latitudes 12S75。

It is as follows that this 4K-HDMI extends receiver module operation principle：

1. power supply

4K-HDMI extends the power supply of receiver from the 12V DC power supply being externally supplied, and is boosted by internal DC-DC Circuit, is converted into 72V power supplys, and the power supply signal that Rapid-4K is formed after coupling carrier signal is sent on Cat.6 cables.

2. audio/video flow

3 pairs of Rapid-4K differential signals in Cat.6 cables, by being input to 4K-HDMI extended lines after isolating transformer In RX SOC chips, into the receiving circuit of 10G Serdes, after 10K Serdes circuits are by Cdr Clock Extractions, restore The data of Rapid-4K, into decompression of entering a profession, are reduced into initial intact after 10b/8b transformation, fec decoder, deframer Then audio-video signal is encoded using HDMI2.0, the HDMI2.0 signals for being encoded into standard are re-send on HDMI connectors Output.

3.Rapid-4K carrier signals generate

Externally input RS-485 signals generate BPSK carrier waves all the way, as anti-by TITAN carrier wave transparent transmission module codings It is coupled on 72V DC power supplies to control signal, the power supply signal as Rapid-4K exports on Cat.6 cables, as control Signal controls remote equipment.

As shown in figure 4, the 4K audio and video Senthesizer module includes 4K audio and video synthesizers SOC chip, serial FLASH core Piece and dram chip, the 4K audio and video synthesizer SOC chip include 8 HDMI PHY RX circuits, audio/video flow switching array Circuit, Scale image scalings circuit, multilayer picture optical supercircuit, osd circuit, cpu circuit, USB controller circuit, USB PHY Circuit, DDR controller circuit and HDMI PHY TX circuits, 8 HDMI PHY RX circuits switch with audio/video flow respectively Array circuit is electrically connected, and the audio/video flow switching array circuit is electrically connected with Scale image scaling circuits, the Scale figures It is electrically connected with multilayer picture optical supercircuit as scaling circuit, the multilayer picture optical supercircuit is electrically connected with HDMI PHY TX circuits It connects, HDMI PHY TX circuits are exported picture by HDMI cable；The cpu circuit is electric with audio/video flow switching array respectively Road, DDR controller circuit, USB controller circuit, serial FLASH chip electrical connection, the DDR controller circuit respectively with Dram chip, Scale image scalings circuit, osd circuit electrical connection, the osd circuit are electrically connected with multilayer picture optical supercircuit, The USB PHY circuits are electrically connected with USB controller circuit.The process of the cpu circuit control whole image processing, host computer The action of instruction control CPU can be issued by USB PHY circuits and USB controller circuit.

The serial FLASH chip is SST companies of U.S. chip product SST25VF040, and dram chip is that South Korea's Samsung is public Department's chip product K4T1G164QF, HDMI PHY RX circuits are U.S. Synopsys companies IP products dwc_hdmi14_rx_ Phy, it is Tianjin Yi Hua Microtronic A/S IP products mdc_audio_sw, Scale image scaling that audio/video flow, which switches array circuit, Circuit is Tianjin Yi Hua Microtronic A/S IP product mdc_video_scale, and multilayer picture optical supercircuit is Tianjin benefit Hua Wei electricity Subsidiary IP product mdc_multi_pic, osd circuit are Tianjin Yi Hua Microtronic A/S IP products mdc_video_osd, CPU Circuit is Britain ARM companies IP product ARM Cortex A5, and USB controller circuit is Synopsys companies of U.S. IP products Dwc_usb3.0_ctl, USB PHY circuit are U.S. Synopsys companies IP products dwc_usb3.0_otg_phy, DDR controls Device circuit is that U.S.'s Synopsys companies IP products dwc_ddr23l_mctl, HDMI PHY TX circuits are U.S. Synopsys public affairs Take charge of IP product dwc_hdmi 14_tx_phy.

This 4K audio and video Senthesizer module operation principles are as follows：

This 4K audio and video Senthesizer modules have 8 road HDMI inputs and 1 road HDMI outputs.

1. signal flow：This 4K audio and video Senthesizer module can support the input of 8 road HDMI2.0 signals, by switching battle array Row, can arbitrarily select putting in order for this 8 road signal, and lossless 8 Scale of feeding are scaled in circuit paths.Each channel Scale, which scales circuit, can carry out the image of input 1,2,4,8,16 times of diminution, or be carried out to image local, 1,2,4,8, 16 times of amplification.Picture signal that treated is output in subsequent more picture supercircuits.More picture supercircuits, can be with The overlap-add procedure for supporting up to 8 layer image signals all supports the selection of 256 grades of transparencies per tomographic image.1 layer of monochrome is supported simultaneously Background and 1 tomographic image background.Support 2 layers of OSD layers of word.For having the image of personage, more picture supercircuits that people can be arranged Object is identified eliminates function with background, this partial circuit can choose character image profile automatically, and be set as transparent to background, then It chooses arbitrary figure layer to be overlapped, both can reach the effect for replacing background.More picture supercircuits can also carry out image spelling It connects, realizes the function of more pictures or picture-in-picture.The picture that the image handled well can be spliced into a 4K again is output to HDMI In TX PHY circuits, it is output to outside.The process of whole image processing, is controlled by CPU and is operated, and host computer can pass through USB PHY and USB controller instruct the action for controlling CPU to issue.The caching of each image is connected to by DDR controller outside piece On dram chip.The program of CPU is stored in the FLASH chip outside piece, and when startup, which reads in DRAM, to be executed.

As shown in figure 5, the 4K-H265 coder modules include 4K-H265 coding SOC chip, serial FLASH and DRAM, the 4K-H265 codings SOC chip include HDMI PHY RX circuits, H.265 coding circuit, DMAC, CPU, USB control Device, USB PHY circuits, SATA controller, SATA PHY circuits, DDR controller, the DMAC respectively with CPU, USB controller, SATA controller, DDR controller, H.265 coding circuit is electrically connected, and the H.265 coding circuit includes DWT translation circuits, ME/ MC estimating motions and compensation circuit and VLC variable length code circuit, picture signal are input to H.265 coding circuit, pass through DWT Translation circuit, ME/MC estimating motions and compensation circuit, VLC variable length code circuit form video code flow H.265.Serially FLASH is electrically connected with CPU, and DRAM is electrically connected with DDR controller, and audio-video signal is input to 4K-H265 by HDMI2.0 and encodes It is divided into picture signal and voice signal after the HDMI PHY RX circuits of SOC chip, picture signal is input to H.265 coding circuit Generate video code flow H.265；Voice signal is input to CPU, carries out Software Compression coding by CPU, generates audio code H.265 Stream, then H.265 audio-video code stream is combined by CPU, the H.265 audio-video code stream pass sequentially through DMAC, USB controller/ SATA controller, USB PHY circuits/SATA PHY circuits are transmitted to the channels USB3.0/channels SATA2.0.H.265 the sound regards Frequency code stream is stored in by SATA2.0 write-ins in HDD hard disks, while H.265 audio-video code stream is transmitted also by the channels USB3.0 To outside controller.4K-H265 coding SOC chip carries out various parameters configuration by CPU and system controls, by USB3,0 Channel is communicated with external host computer.The caching of image is connected to by DDR controller on the dram chip outside chip, CPU Program be stored in the FLASH chip outside chip, when startup, which reads in DRAM, to be executed.The 4K-H265 encodes SOC chip Various parameters configuration and system control are carried out by CPU, by USB3,0 channel is communicated with external host computer.

The HDMI PHY RX circuits are U.S. Synopsys companies IP product dwc_hdmi14_rx_phy, are H.265 compiled Code circuit is Tianjin Yi Hua Microtronic A/S IP products MCDCV550, and DMAC is U.S. Synopsys companies IP products dwc_ Amba_dmac, CPU are Britain ARM companies IP product ARM Cortex A5, and USB controller produces for Synopsys companies of U.S. IP Product dwc_usb3.0_ctl, USB PHY circuit is U.S. Synopsys companies IP products dwc_usb3.0_otg_phy, SATA controls Device processed is that U.S.'s Synopsys companies IP products dwc_sata_ahost, SATA PHY circuit is Synopsys companies of U.S. IP productions Product dwc_sata2phy, DDR controller are that U.S.'s Synopsys companies IP products dwc_ddr23l_mctl, DWT translation circuit is Tianjin Yi Hua Microtronic A/S IP products mdc_dwt, ME/MC estimating motion is Tianjin Yi Hua Microtronic A/S IP with compensation circuit Product mdc_memc, VLC variable length code circuit is Tianjin Yi Hua Microtronic A/S IP products mdc_lvc.

This 4K-H265 coder module operation principles are as follows：

Audio-video signal enters the HDMI PHY RX circuits that 4K-H265 encodes SOC chip by HDMI2.0, is divided into image Signal and voice signal, picture signal enter H.265 coding circuit, by DWT translation circuits, ME/MC estimating motions and compensation Circuit, VLC variable length code circuit form video code flow H.265；Voice signal enters CPU, and Software Compression is carried out by CPU Coding, forms audio code stream H.265.Audio-video code stream is combined by CPU again, is then respectively transmitted to code stream by DMAC The channels USB3.0 and the channels SATA2.0.H.265 audio-video code stream is stored in by SATA2.0 write-ins in HDD hard disks, simultaneously H.265 audio-video code stream is transmitted to also by the channels USB3.0 outside controller.

As shown in fig. 6, the 4K direct-broadcasting code streams transmission control unit (TCU) module includes 3 USB HUB chips, 3 USB3.0OTG PHY chip, fpga chip, MPU processor chips, dram chip, Ethernet PHY chip, WIFI digital transmission modules and 4G/5G communications Module, 3 USB HUB chips are respectively electrically connected by a USB3.0OTG PHY chip with fpga chip respectively, wherein one A USB HUB chips are electrically connected by USB3.0 interfaces with 4K audio and video Senthesizer modules, and USB3.0 interfaces and 4K-H265 are passed through Coder module is electrically connected, another USB HUB chip connects smart mobile phone/laptop computer, third by USB3.0 interfaces USB HUB chips are electrically connected with WIFI digital transmission modules and 4G/5G communication modules, the fpga chip respectively with MPU processor cores Piece, dram chip, Ethernet PHY chip electrical connection.The fpga chip includes 3 USB3.0 control circuits, DDR control electricity Road, DMAC control circuits, Ethernet MAC control circuits, the Ethernet MAC control circuits and Ethernet PHY chip Electrical connection, the DDR control circuits are electrically connected with dram chip.

The USB HUB chips are that the U.S. microchip Products USB5533B, USB3.0OTG PHY chip are beautiful State cypress products C YUSB3014, fpga chip are that the U.S. xilinx products xc5VLC550, MPU processor chips are South Korea Samsung chip product Exynos-4412, dram chip are Samsung of South Korea chip product K4T1G164QF, Ethernet PHY chip is that the U.S. Marvell Products 88E1340S-BAM2, WIFI digital transmission module are the prosperous Products of Shanghai pleasure ESP8266,4G/5G communication module are Huawei ME909s, and USB3.0 control circuits are U.S. Synopsys companies IP products dwc_ Usb3.0_ctl, DDR control circuit are that U.S.'s Synopsys companies IP products dwc_ddr23l_mctl, DMAC control circuit is U.S.'s Synopsys companies IP products dwc_amba_dmac, Ethernet MAC control circuits are Synopsys companies of U.S. IP Product dwc_ethernet_ahb.

This 4K direct-broadcasting code stream transmission control unit (TCU) module operation principles are as follows：

USB1 mouthfuls and USB2 mouthfuls are separately connected 4K audio and video synthesizer and 4K-H265 encoders.

1. signal flow

Compressed code stream is entered by USB2 mouthfuls in this controller, is passed data by DDR control circuits by DMAC It is sent in dram chip and caches.MPU processors operate above android operating systems, can export code stream by 2 kinds of modes Live streaming software in, a kind is by smart mobile phone, and another a kind is laptop computer.This controller module can also directly be supported to be broadcast live Website logs in, and the information of webcast website can be set (smart mobile phone and laptop computer with smart mobile phone or laptop computer Asynchronously support), internet is then directly connected to by WIFI digital transmission modules, 4G/5G communication modules or wired Ethernet On, carry out the direct access to webcast website.The caching of each image is connected to the dram chip outside piece by DDR controller On.The program of CPU is stored in the FLASH chip outside piece, and when startup, which reads in DRAM, to be executed.

The control command to 4K audio and video synthesizers is sent in USB1 oral instructions；The control to 4K-H265 encoders is sent in USB2 oral instructions Order, while receiving live streaming audio-video code stream data；Control command of the smart mobile phone to whole system is sent in USB3 oral instructions, is connect simultaneously Receive live streaming audio-video code stream data；Control command of the laptop computer to whole system is sent in USB4 oral instructions, while being received live streaming sound and being regarded Frequency code flow data.

This 4K direct-broadcasting code stream transmission control unit (TCU)s module can directly be led to data file by WIFI digital transmission modules or 4G/5G The internet of news module connection is sent in the server of live streaming website；4K direct-broadcasting code stream transmission control unit (TCU) modules can also pass through USB3.0 interfaces connect smart mobile phone or laptop computer.4K direct-broadcasting code streams transmission control unit (TCU) module can invent oneself at this time USB extends out pickup camera, live streaming APP or live streaming software is directly logged on smart mobile phone or laptop computer, you can carry out straight Broadcast interaction.

2. main broadcaster controls

This 4K direct-broadcasting code stream transmission control unit (TCU)s module can also connect smart mobile phone or laptop computer by USB3.0 interfaces Afterwards, Broadcast Control APP or Broadcast Control software can also be started, broadcast control, including control holder are carried out to 4K audio and video main broadcaster consoles Rotation, audio-video source switching, scaling and splicing, and it is superimposed background, subtitle, figure and image；Adjust compression ratio, setting broadcasting station The operations such as point.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection domain within.

Claims (5)

1. a kind of 4K direct-broadcasting code stream transmission control unit (TCU)s based on high resolution audio and video live broadcast system, it is characterised in that：Including 3 USB HUB chips, 3 USB3.0OTG PHY chips, fpga chip, MPU processor chips, dram chip, Ethernet PHY chip, WIFI digital transmission modules and 4G/5G communication modules, 3 USB HUB chips respectively pass through a USB3.0OTG PHY chip respectively It is electrically connected with fpga chip, the fpga chip is electrically connected with MPU processor chips, dram chip, Ethernet PHY chip respectively It connects.

2. a kind of 4K direct-broadcasting code stream transmission control unit (TCU)s based on high resolution audio and video live broadcast system according to claim 1, It is characterized in that：The fpga chip includes 3 USB3.0 control circuits, DDR control circuits, DMAC control circuits, Ethernet MAC control circuits, the Ethernet MAC control circuits are electrically connected with Ethernet PHY chip, the DDR control circuits with Dram chip is electrically connected, and 3 USB3.0 control circuits are respectively electrically connected with a USB3.0OTG PHY chip respectively.

3. a kind of 4K direct-broadcasting code stream transmission control unit (TCU)s based on high resolution audio and video live broadcast system according to claim 1 or 2, It is characterized in that：One of USB HUB chips are electrically connected by USB3.0 interfaces with 4K audio and video Senthesizer modules, are passed through USB3.0 interfaces are electrically connected with 4K-H265 coder modules, another USB HUB chip connects intelligent hand by USB3.0 interfaces Machine and/or laptop computer, third USB HUB chips are electrically connected with WIFI digital transmission modules and 4G/5G communication modules.

4. a kind of 4K direct-broadcasting code stream transmission control unit (TCU)s based on high resolution audio and video live broadcast system according to claim 1, It is characterized in that：The WIFI digital transmission modules are the Shanghai prosperous Products ESP8266 of pleasure, and the 4G/5G communication modules are Huawei ME909s。

5. a kind of 4K direct-broadcasting code stream transmission control unit (TCU)s based on high resolution audio and video live broadcast system according to claim 1, It is characterized in that：The fpga chip is U.S. xilinx products xc5VLC550.