CN109743475A - The presentation-guiding device of multichannel live streaming - Google Patents
The presentation-guiding device of multichannel live streaming Download PDFInfo
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Abstract
The invention discloses a kind of presentation-guiding devices of multichannel live streaming, including shell and setting are in the intracorporal first HDMI conversion module of shell, the 2nd HDMI conversion module, Audio conversion switch, processor and output interface；It is converted by the audio, video data that the built-in circuit of two HDMI conversion modules inputs external two-way HDMI signal source, obtains corresponding first picture signal and the first audio signal and the second picture signal and the second audio signal；Audio conversion switch is connect with the dsp controller of processor, for switching over input to the first audio signal and the second audio signal；Processor carries out audio-video signal processing to the first picture signal of the first ISP interface, the second picture signal of the 2nd ISP interface and received first audio signal of dsp controller and the second audio signal according to preset instructions；Output interface is used to export audio-video signal final after processing to external display device.The present invention can reduce the operand of processor, to improve treatment effeciency.
Description
Technical field
The present invention relates to the presentation-guiding devices that video process apparatus technical field more particularly to a kind of multichannel are broadcast live.
Background technique
With the fast development of direct seeding technique, requirement of the people to live streaming is higher and higher.It is frequently necessary to believe multi-channel video
It number is broadcast live, but the presentation-guiding device of existing miniaturization, directly convert using video of the processor to input and phase
Video processing is closed, causes processor operand big, causes treatment effeciency low, instructor in broadcasting's mass is poor.
Summary of the invention
The presentation-guiding device of multichannel live streaming provided by the invention, main purpose are to overcome the presentation-guiding device of existing miniaturization
Processor operand it is big, cause the problem that treatment effeciency is low.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of presentation-guiding device of multichannel live streaming, including shell, the first HDMI conversion module, the 2nd HDMI conversion module, sound
Frequency switching switch, processor and output interface；
The first HDMI conversion module, setting on the housing, respectively with the first ISP interface of the processor and
Audio conversion switch connection, for receiving the first audio, video data of external first via HDMI signal source, and utilizes built-in circuit
First audio, video data is carried out being converted to the first picture signal and the first audio signal；
The 2nd HDMI conversion module, setting on the housing, respectively with the 2nd ISP interface of the processor and
Audio conversion switch connection, for receiving the second audio, video data of external second road HDMI signal source, and utilizes built-in circuit
Second audio, video data is carried out being converted to the second picture signal and the second audio signal；
Audio conversion switch, is arranged in the shell, connect with the dsp controller of the processor, is used for pair
First audio signal and the second audio signal switch over input；
The processor is arranged in the shell, connect with the output interface port, for according to preset instructions pair
The first picture signal, the second picture signal and dsp controller of the 2nd ISP interface of the first ISP interface
Received first audio signal and the second audio signal carry out audio-video signal processing, obtain audio-video signal；
The output interface is arranged on the housing, for audio-video signal final after handling the processor
It exports to external display device.
As an embodiment, the first HDMI conversion module includes that HDMI turns Mipi bridging chip and its periphery
Circuit.
As an embodiment, the 2nd HDMI conversion module includes that HDMI turns Mipi bridging chip and its periphery
Circuit.
As an embodiment, the HDMI of the first HDMI conversion module turns Mipi bridging chip and the 2nd HDMI
The model that the HDMI of conversion module turns Mipi bridging chip is identical, is TC358840XBG.
As an embodiment, the presentation-guiding device of multichannel live streaming provided by the invention further includes USB controller；
The USB controller, setting on the housing with, be connected to the processor, be used for and external USB video believe
The connection of number source carries out the reception of USB audio, video data.
As an embodiment, the presentation-guiding device of multichannel live streaming provided by the invention further includes wireless communication module；
The wireless communication module, setting on the housing, are connected to the processor, for passing through the channel radio
News module allows the processor and external server to carry out data interaction.
As an embodiment, the wireless communication module is wifi communication module, 3G communication module and 4G logical
Interrogate one or more of module.
As an embodiment, the presentation-guiding device of multichannel live streaming provided by the invention further includes memory module；
The memory module, setting on the housing, are connected to the processor by the SD interface of the processor,
For being stored to audio-video signal final after processing.
As an embodiment, the output interface is USB host interface, USB turns Ethernet interface and type-
One or more of c interface.
As an embodiment, the presentation-guiding device of multichannel live streaming provided by the invention further includes the 3rd HDMI modulus of conversion
Block；
The 3rd HDMI conversion module is connect with the DSI interface, compatible for being converted to audio-video signal
HDMI is output to the output that external-connection displayer completes HDMI.
Compared with prior art, the technical program has the advantage that
The presentation-guiding device of multichannel provided by the invention live streaming, by two HDMI conversion modules being arranged on shell
The audio, video data that circuits input external two-way HDMI signal source is converted, and corresponding picture signal and audio letter are obtained
Number；Audio signal is transferred to processor by Audio conversion switch, and picture signal is transferred directly to processor；It is handling
It is exported by output interface to external display device in device to after picture signal and audio signal progress audio-video signal processing.?
Setting HDMI conversion module and Audio conversion before processor switch to realize that picture signal and audio signal are two-part pre-
Processing, so that the operand of processor is reduced, to improve treatment effeciency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the presentation-guiding device for the multichannel live streaming that the embodiment of the present invention one provides；
Fig. 2 is the circuit diagram of memory module in Fig. 1；
Fig. 3 is the circuit diagram of the 3rd HDMI conversion module.
In figure: 1, the first HDMI conversion module；2, the 2nd HDMI conversion module；3, Audio conversion switchs；4, processor；5,
Output interface；6, USB controller；7, wireless communication module；8, memory module.
Specific embodiment
Below in conjunction with attached drawing, the technical characteristic and advantage above-mentioned and other to the present invention are clearly and completely described,
Obviously, described embodiment is only section Example of the invention, rather than whole embodiments.
Fig. 1 and Fig. 2 are please referred to, the presentation-guiding device for the multichannel live streaming that the embodiment of the present invention one provides, including shell, first
HDMI conversion module 1, the 2nd HDMI conversion module 2, Audio conversion switch 3, processor 4 and output interface 5；First HDMI turns
Block 1 is changed the mold, is arranged on shell, is connect respectively with the first ISP interface and Audio conversion switch 3 of processor 4, it is outer for receiving
First audio, video data of portion's first via HDMI signal source, and the first audio, video data is converted to using built-in circuit
First picture signal and the first audio signal；2nd HDMI conversion module 2 is arranged on shell, respectively with the second of processor 4
ISP interface and Audio conversion switch 3 connect, for receiving the second audio, video data of external second road HDMI signal source, and benefit
The second audio, video data is carried out with built-in circuit to be converted to the second picture signal and the second audio signal；Audio conversion switch
3, it is arranged in shell, is connect with the dsp controller of processor 4, for is carried out to the first audio signal and the second audio signal
Switching input；Processor 4 is arranged in shell, connect with 5 port of output interface, for connecing according to preset instructions to the first ISP
Received first picture signal of mouth, the second picture signal of the 2nd ISP interface and received first audio of dsp controller
Signal and the second audio signal carry out audio-video signal processing, obtain audio-video signal；Output interface 5 is arranged on shell, uses
Final audio-video signal is exported to external display device after by the processing of processor 4.
It should be noted that the first HDMI conversion module 1, the 2nd HDMI conversion module 2, Audio conversion switch 3, processor
4 and output interface 5 be respectively provided in the housing, shell can be made of the materials of plastics, can also be made of metal material.
The presentation-guiding device of multichannel live streaming of the invention is an intermediate device, and setting is at least two-way external signal output equipment and shows
Show between equipment；It can receive the audio, video data of at least two-way external signal output equipment output.In this present embodiment, first
HDMI conversion module 1 and the 2nd HDMI conversion module 2 are identical modules, and difference is that the position being arranged is different.It is difference
It is connect with mutually independent external HDMI signal source, i.e., is inputted separately as audio-video route all the way.And synaeresis can be matched
Frequency switching switch 3 makes that at least instructor in broadcasting can be carried out to two-way audio-video signal.External display device can be Android system
The equipment that equipment is also possible to IOS system.If it is the equipment of Android system, then can be connect by the Audio API of Android
Mouth reads vision signal.
In the first HDMI conversion module 1 and the 2nd HDMI conversion module 2, all conversion process are all based on circuit reality
Existing.I.e. the built-in circuit of the first HDMI conversion module 1 and the 2nd HDMI conversion module 2 be just HDMI turn Mipi bridging chip and
Its peripheral circuit.That is the first HDMI conversion module 1 includes that HDMI turns Mipi bridging chip and its peripheral circuit.2nd HDMI conversion
Module 2 includes that HDMI turns Mipi bridging chip and its peripheral circuit.And the first HDMI conversion module 1 HDMI turn Mipi bridge joint core
The model that the HDMI of piece and the 2nd HDMI conversion module 2 turns Mipi bridging chip is identical, is TC358840XBG.It can be incited somebody to action
4K ultra high-definition (3840x2160) (and following) video flowing is split as left images, then from binary channelsCSI-2 interface is defeated
Out.It needs dual link data channel, and to send maximum 7.2Gbps vision signal, vision signal is transmitted to by ISP interface
Processor 4 carries out audio-video signal processing to it, and the audio signal obtained after being converted by bridging chip is accessed by dsp interface
Processor 4, upper layer application can be read by Android AudioAPI.
Preset instructions in processor 4 are arranged previously according to instructor in broadcasting's demand, can be generated according to the demand of instructor in broadcasting
Instruction carrys out received first audio of the second picture signal and dsp controller to the first picture signal, the 2nd ISP interface
Signal and the second audio signal carry out audio-video signal processing, the most important work of processor 4 namely carries out horizontal splicing with
The content of instructor in broadcasting.The first HDMI conversion module 1, the 2nd HDMI conversion module that the pretreatment of audio, video data is all arranged in front
2 and Audio conversion switch 3 in carry out so that the present invention video-photographic equipment is connect with this equipment after can be achieved delay it is low
Net cast.
The presentation-guiding device of multichannel provided by the invention live streaming, by two HDMI conversion modules being arranged on shell
The audio, video data that circuits input external two-way HDMI signal source is converted, and corresponding picture signal and audio letter are obtained
Number；Audio signal is transferred to processor 4 by Audio conversion switch 3, and picture signal is transferred directly to processor 4；?
Pass through the output of output interface 5 to outside display after carrying out audio-video signal processing to picture signal and audio signal in processor 4
Equipment.Setting HDMI conversion module and Audio conversion switch 3 before processor 4 realize picture signal and audio signal two
Partial pretreatment, so that the operand of processor 4 is reduced, to improve treatment effeciency.
Further, the presentation-guiding device of multichannel live streaming provided by the invention further includes USB controller 6；USB controller 6, if
Set on shell with, connect with processor 4, for connect with external USB video signal source progress the reception of USB audio, video data.
That is processor 4 can not only the audio, video data to HDMI signal source carry out processing instructor in broadcasting, additionally it is possible to USB video believe
The audio, video data in number source is handled.I.e. the present invention audio, video data to three road external video signal sources can carry out simultaneously
Instructor in broadcasting reduces live streaming cost without adding instructor in broadcasting's platform.It, can also be to external network signal source in other embodiments
Network audio-video data carry out processing instructor in broadcasting, can satisfy the application of some complex scenes.
Further, the presentation-guiding device of multichannel live streaming provided by the invention further includes wireless communication module 7；Wireless telecommunications mould
Block 7 is arranged on shell, connect with processor 4, for allowing processor 4 and external server to carry out by wireless communication module 7
Data interaction.Wireless communication module 7 is one or more of wifi communication module, 3G communication module and 4G communication module.
So that supporting multiple network connection type, wifi, 3G and 4G communication modes are supported.Certainly in other embodiments, Ke Yishe
It is equipped with line communication module, so that supporting wire communication mode.
As shown in Fig. 2, being the circuit diagram of memory module 8, the presentation-guiding device of multichannel live streaming provided by the invention is also wrapped
Include memory module 8；Memory module 8 is arranged on shell, is connect by the SD interface of processor 4 with processor 4, for processing
Final audio-video signal is stored afterwards.Middle memory module 8 can be SD card in this present embodiment, and pin is defined as follows table
1；
Table 1:
| Pin | Title | Type | Description |
| 1 | CD | I/O/PP | Card monitoring data position 3 |
| 2 | CMD | PP | Order/reply |
| 3 | VSS | S | Ground |
| 4 | VCC | S | Supply voltage |
| 5 | CLK | I | Clock |
| 6 | CSS2 | S | Ground |
| 7 | DAT0 | I/O/PP | Data bit 0 |
| 8 | DAT1 | I/O/PP | Data bit 1 |
| 9 | DAT2 | I/O/PP | Data bit 2 |
All units provide clock by internal clock generator in SD card, the synchronous external clock of interface driver unit
Clock used in DAT and cmd signal to inside.It is controlled by 6 line SD card interfaces, comprising: CMD, CLK, DAT0-DAT3.In other
In embodiment, in order to identify SD card, need a card marker register (CID) and an appropriate address register (RCA) preparatory
It is ready to.Needing an additional register includes different type operating parameter.It is still deposited using SD card line access memory
The communication of device is defined by SD card standard.The recording function of access video may be implemented by SD card, directly by video content, storage
To SD.
Further, in order to extend output function, make it possible to connect with multi-class device, output interface 5 connects for usb host
Mouth, USB turn one or more of Ethernet interface and type-c interface.
In one embodiment, when output interface 5 is DSI interface, the 3rd HDMI conversion module can be set again.3rd HDMI
Conversion module is connect with DSI interface, is output to external-connection displayer completion for audio-video signal to be converted to compatible HDMI
The output of HDMI.
As shown in figure 3, being the circuit diagram of the 3rd HDMI conversion module.3rd HDMI conversion module and the first HDMI turn
It changes the mold block 1 and the 2nd HDMI conversion module 2 is identical, and Mipi bridging chip and its peripheral circuit realization are turned using HDMI.But
It is its model HDMI_ATOM-A03623, it is different from the first HDMI conversion module 1 and the 2nd HDMI conversion module 2.The core
Piece is worked by 1.8V power supply power supply, is worked in the pixel clock of 25MHz to 154MHz, and is provided with optional S/PDIF
Or 2 channel I2S serial audio input HDMI/MHL data output, while the chip have 2 channel I2S of high-fidelity can send
The stereo up to sample rate of 192kHz.S/PDIF can carry stereo LPCM audio or compression audio, outside different
Portion's receiving device (different displays) selectivity will be decodedDSI 18bpp RGB666 and 24bpp RGB888
Data packet is formatted, and audio, video data is finally converted to compatible HDMI and is output to the defeated of external-connection displayer completion HDMI
Function out.
Although the invention has been described by way of example and in terms of the preferred embodiments, but it is not for limiting the present invention, any this field
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair
Bright technical solution makes possible variation and modification, therefore, anything that does not depart from the technical scheme of the invention, and according to the present invention
Technical spirit any simple modifications, equivalents, and modifications to the above embodiments, belong to technical solution of the present invention
Protection scope.
Claims (10)
1. a kind of presentation-guiding device of multichannel live streaming, which is characterized in that turn including shell, the first HDMI conversion module, the 2nd HDMI
Change the mold block, Audio conversion switch, processor and output interface；
The first HDMI conversion module, setting on the housing, respectively with the first ISP interface and audio of the processor
Switching switch connection, for receiving the first audio, video data of external first via HDMI signal source, and using built-in circuit to institute
The first audio, video data is stated to carry out being converted to the first picture signal and the first audio signal；
The 2nd HDMI conversion module, setting on the housing, respectively with the 2nd ISP interface and audio of the processor
Switching switch connection, for receiving the second audio, video data of external second road HDMI signal source, and using built-in circuit to institute
The second audio, video data is stated to carry out being converted to the second picture signal and the second audio signal；
The Audio conversion switch, is arranged in the shell, connect with the dsp controller of the processor, for described
First audio signal and the second audio signal switch over input；
The processor is arranged in the shell, connect with the output interface port, is used for according to preset instructions to described
First picture signal of the first ISP interface, the second picture signal of the 2nd ISP interface and dsp controller receive
The first audio signal and the second audio signal carry out audio-video signal processing, obtain audio-video signal；
The output interface, setting on the housing, are exported for audio-video signal final after handling the processor
To external display device.
2. the presentation-guiding device of multichannel as described in claim 1 live streaming, which is characterized in that the first HDMI conversion module includes
HDMI turns Mipi bridging chip and its peripheral circuit.
3. the presentation-guiding device of multichannel as claimed in claim 2 live streaming, which is characterized in that the 2nd HDMI conversion module includes
HDMI turns Mipi bridging chip and its peripheral circuit.
4. the presentation-guiding device of multichannel live streaming as claimed in claim 3, which is characterized in that the first HDMI conversion module
The model that the HDMI that HDMI turns Mipi bridging chip and the 2nd HDMI conversion module turns Mipi bridging chip is identical, is
TC358840XBG。
5. the presentation-guiding device of multichannel live streaming according to any one of claims 1-4, which is characterized in that further include USB controller；
The USB controller, setting on the housing with, be connected to the processor, be used for and external USB video signal source
Connection carries out the reception of USB audio, video data.
6. the presentation-guiding device of multichannel live streaming as claimed in claim 5, which is characterized in that further include wireless communication module；
The wireless communication module, setting on the housing, are connected to the processor, for passing through the wireless telecommunications mould
Block allows the processor and external server to carry out data interaction.
7. the presentation-guiding device of multichannel live streaming as claimed in claim 6, which is characterized in that the wireless communication module is logical for wifi
Interrogate one or more of module, 3G communication module and 4G communication module.
8. the presentation-guiding device of multichannel live streaming as claimed in claim 5, which is characterized in that further include memory module；
The memory module, setting on the housing, are connected to the processor by the SD interface of the processor, are used for
Audio-video signal final after processing is stored.
9. the presentation-guiding device of multichannel live streaming as claimed in claim 5, which is characterized in that the output interface connects for usb host
Mouth, USB turn one or more of Ethernet interface and type-c interface.
10. the presentation-guiding device of multichannel live streaming as claimed in claim 9, which is characterized in that further include the 3rd HDMI conversion module；
The 3rd HDMI conversion module is connect with the DSI interface, defeated for audio-video signal to be converted to compatible HDMI
The output that external-connection displayer completes HDMI is arrived out.
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| CN114222157A (en) * | 2021-12-22 | 2022-03-22 | 厦门视诚科技有限公司 | Multi-input signal portable broadcasting and stream pushing pre-monitoring system |
| CN114222157B (en) * | 2021-12-22 | 2024-05-10 | 厦门视诚科技有限公司 | Multi-input signal portable pilot broadcast plug flow pre-monitoring system |
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| CN109743475B (en) | 2023-12-12 |
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