CN109743475B - Guide broadcasting device for multipath live broadcasting - Google Patents
Guide broadcasting device for multipath live broadcasting Download PDFInfo
- Publication number
- CN109743475B CN109743475B CN201910023017.1A CN201910023017A CN109743475B CN 109743475 B CN109743475 B CN 109743475B CN 201910023017 A CN201910023017 A CN 201910023017A CN 109743475 B CN109743475 B CN 109743475B
- Authority
- CN
- China
- Prior art keywords
- audio
- hdmi
- processor
- conversion module
- interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 60
- 230000005236 sound signal Effects 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007781 pre-processing Methods 0.000 description 3
- 101001003569 Homo sapiens LIM domain only protein 3 Proteins 0.000 description 1
- 101000639972 Homo sapiens Sodium-dependent dopamine transporter Proteins 0.000 description 1
- 102100026460 LIM domain only protein 3 Human genes 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a multi-path live broadcast guiding and broadcasting device which comprises a shell, a first HDMI conversion module, a second HDMI conversion module, an audio frequency change-over switch, a processor and an output interface, wherein the first HDMI conversion module, the second HDMI conversion module, the audio frequency change-over switch, the processor and the output interface are arranged in the shell; the method comprises the steps that audio and video data input by two external HDMI signal sources are converted through built-in circuits of two HDMI conversion modules, and corresponding first image signals and first audio signals as well as second image signals and second audio signals are obtained; the audio frequency change-over switch is connected with the DSP controller of the processor and is used for carrying out change-over input on the first audio frequency signal and the second audio frequency signal; the processor processes audio and video signals according to a preset instruction, wherein the first image signal is received by the first ISP interface, the second image signal is received by the second ISP interface, and the first audio signal and the second audio signal are received by the DSP controller; the output interface is used for outputting the processed final audio and video signals to external display equipment. The invention can reduce the operation amount of the processor so as to improve the processing efficiency.
Description
Technical Field
The invention relates to the technical field of video processing devices, in particular to a guide broadcasting device for multi-path live broadcasting.
Background
With the rapid development of live broadcasting technology, people have increasingly high requirements on live broadcasting. The existing miniaturized guide-broadcasting device directly utilizes a processor to convert input video and process related video, so that the processor has large operation amount, low processing efficiency and relatively poor guide-broadcasting quality.
Disclosure of Invention
The invention provides a multi-path live broadcast guiding and broadcasting device, which mainly aims to solve the problem of low processing efficiency caused by large operation amount of a processor of the existing miniaturized guiding and broadcasting device.
In order to solve the technical problems, the invention adopts the following technical scheme:
a multi-path live broadcast guiding device comprises a shell, a first HDMI conversion module, a second HDMI conversion module, an audio frequency change-over switch, a processor and an output interface;
the first HDMI conversion module is arranged on the shell, is respectively connected with a first ISP interface and an audio frequency change-over switch of the processor, and is used for receiving first audio/video data of an external first path HDMI signal source, and converting the first audio/video data by utilizing a built-in circuit to obtain a first image signal and a first audio signal;
the second HDMI conversion module is arranged on the shell, is respectively connected with a second ISP interface and an audio frequency change-over switch of the processor, and is used for receiving second audio/video data of an external second path HDMI signal source and converting the second audio/video data by utilizing a built-in circuit to obtain a second image signal and a second audio signal;
the audio frequency switching switch is arranged in the shell, connected with the DSP controller of the processor and used for switching and inputting the first audio frequency signal and the second audio frequency signal;
the processor is arranged in the shell and connected with the output interface port, and is used for processing audio and video signals of the first image signal received by the first ISP interface, the second image signal received by the second ISP interface, and the first audio signal and the second audio signal received by the DSP controller according to a preset instruction to obtain audio and video signals;
the output interface is arranged on the shell and is used for outputting the final audio and video signals processed by the processor to external display equipment.
As an implementation manner, the first HDMI conversion module includes an HDMI-to-Mipi bridge chip and its peripheral circuits.
As an implementation manner, the second HDMI conversion module includes an HDMI-to-Mipi bridge chip and its peripheral circuits.
As an implementation manner, the type of the HDMI-to-Mipi bridge chip of the first HDMI conversion module and the type of the HDMI-to-Mipi bridge chip of the second HDMI conversion module are the same, and are both TC358840XBG.
As an implementation manner, the multi-path live broadcast guiding device provided by the invention further comprises a USB controller;
the USB controller is arranged on the shell and connected with the processor and used for receiving USB audio and video data by being connected with an external USB video signal source.
As an implementation manner, the multi-path live broadcast guiding and broadcasting device provided by the invention further comprises a wireless communication module;
the wireless communication module is arranged on the shell and connected with the processor, and is used for enabling the processor to interact data with an external server through the wireless communication module.
As an implementation manner, the wireless communication module is one or more of a wifi communication module, a 3G communication module and a 4G communication module.
As an implementation manner, the multi-path live broadcast guiding device provided by the invention further comprises a storage module;
the storage module is arranged on the shell, is connected with the processor through an SD interface of the processor and is used for storing the processed final audio/video signals.
As one implementation manner, the output interface is one or more of a USB host interface, a USB-to-Ethernet interface and a type-c interface.
As an implementation manner, the multi-path live broadcast guiding device provided by the invention further comprises a third HDMI conversion module;
and the third HDMI conversion module is connected with the DSI interface and used for converting the audio and video signals into compatible HDMI and outputting the compatible HDMI to an external display to finish the HDMI output.
Compared with the prior art, the technical scheme has the following advantages:
according to the multi-channel live broadcast guiding and broadcasting device, audio and video data input by two external HDMI signal sources are converted through built-in circuits of two HDMI conversion modules arranged on a shell, so that corresponding image signals and audio signals are obtained; transmitting the audio signal to the processor through the audio change-over switch, and directly transmitting the image signal to the processor; the image signal and the audio signal are processed in the processor and then output to the external display device through the output interface. The HDMI conversion module and the audio frequency change-over switch are arranged in front of the processor to realize the preprocessing of the image signal and the audio signal, so that the operation amount of the processor is reduced, and the processing efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a multicast device for multi-channel live broadcasting according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of the memory module of FIG. 1;
fig. 3 is a circuit schematic diagram of a third HDMI conversion module.
In the figure: 1. a first HDMI conversion module; 2. a second HDMI conversion module; 3. an audio frequency change-over switch; 4. a processor; 5. an output interface; 6. a USB controller; 7. a wireless communication module; 8. and a storage module.
Detailed Description
The foregoing and other features and advantages of the invention will be apparent from the following, more particular, description of the invention, as illustrated in the accompanying drawings, in which embodiments described are merely some, but not all embodiments of the invention.
Referring to fig. 1 and fig. 2, a multi-channel live broadcast guiding device provided by an embodiment of the invention includes a housing, a first HDMI conversion module 1, a second HDMI conversion module 2, an audio switch 3, a processor 4, and an output interface 5; the first HDMI conversion module 1 is arranged on the shell, is respectively connected with a first ISP interface and the audio frequency change-over switch 3 of the processor 4, and is used for receiving first audio and video data of an external first path HDMI signal source, and converting the first audio and video data by utilizing a built-in circuit to obtain a first image signal and a first audio signal; the second HDMI conversion module 2 is arranged on the shell, is respectively connected with a second ISP interface of the processor 4 and the audio frequency change-over switch 3, and is used for receiving second audio/video data of an external second path HDMI signal source and converting the second audio/video data by utilizing the built-in circuit to obtain a second image signal and a second audio signal; the audio frequency change-over switch 3 is arranged in the shell, is connected with the DSP controller of the processor 4 and is used for carrying out change-over input on the first audio frequency signal and the second audio frequency signal; the processor 4 is arranged in the shell and connected with the port of the output interface 5, and is used for processing audio and video signals according to a preset instruction on a first image signal received by the first ISP interface, a second image signal received by the second ISP interface, and a first audio signal and a second audio signal received by the DSP controller to obtain audio and video signals; and the output interface 5 is arranged on the shell and is used for outputting the final audio and video signals processed by the processor 4 to external display equipment.
It should be noted that, the first HDMI conversion module 1, the second HDMI conversion module 2, the audio switch 3, the processor 4, and the output interface 5 are all disposed in a housing, and the housing may be made of a plastic material or a metal material. The guide broadcasting device of the multi-path live broadcast is an intermediate device which is arranged between at least two paths of external signal output equipment and display equipment; the audio and video data output by at least two external signal output devices can be received. In the present embodiment, the first HDMI conversion module 1 and the second HDMI conversion module 2 are the same module, except for the different positions to be set. Are respectively connected with mutually independent external HDMI signal sources, namely are respectively used as one audio/video line for input. And can cooperate with the audio frequency change-over switch 3 to lead at least two paths of audio and video signals to be broadcast. The external display device may be a device of an android system or a device of an IOS system. If the device is an android device, the video signal can be read through an android Audio API interface.
In the first HDMI conversion module 1 and the second HDMI conversion module 2, all conversion processes are realized based on circuits. That is, the built-in circuits of the first HDMI conversion module 1 and the second HDMI conversion module 2 are HDMI-to-Mipi bridge chips and peripheral circuits thereof. I.e. the first HDMI conversion module 1 comprises an HDMI-to-Mipi bridge chip and its peripheral circuits. The second HDMI conversion module 2 includes an HDMI-to-Mipi bridge chip and its peripheral circuits. And the type of the HDMI-to-Mipi bridge chip of the first HDMI conversion module 1 is the same as the type of the HDMI-to-Mipi bridge chip of the second HDMI conversion module 2, and the HDMI-to-Mipi bridge chips are TC358840XBG. It can split 4K ultra-high definition (3840 x 2160) (and below) video stream into left and right images, then from two channelsAnd outputting the CSI-2 interface. The double-link data channel is needed to send the maximum 7.2Gbps video signal, the video signal is transmitted to the processor 4 through the ISP interface to process the audio and video signals, the audio signal obtained after the conversion through the bridge chip is accessed to the processor 4 through the DSP interface, and the upper layer application can be read through the android audioAPI.
The preset instructions in the processor 4 are preset according to the broadcasting requirement, and the preset instructions can generate instructions according to the broadcasting requirement to perform audio and video signal processing on the first image signal, the second image signal received by the second ISP interface, and the first audio signal and the second audio signal received by the DSP controller, and the most main work of the processor 4 is to perform horizontal splicing and broadcasting. The preprocessing of the audio and video data is performed in the first HDMI conversion module 1, the second HDMI conversion module 2 and the audio change-over switch 3 which are arranged in the front, so that the video live broadcast with low delay can be realized after the photographic and shooting equipment is connected with the equipment.
According to the multi-channel live broadcast guiding and broadcasting device, audio and video data input by two external HDMI signal sources are converted through built-in circuits of two HDMI conversion modules arranged on a shell, so that corresponding image signals and audio signals are obtained; transmitting the audio signal to the processor 4 through the audio change-over switch 3, and directly transmitting the image signal to the processor 4; the image signal and the audio signal are subjected to audio-video signal processing in the processor 4 and then output to an external display device through the output interface 5. The HDMI conversion module and the audio switch 3 are provided before the processor 4 to implement preprocessing of both the image signal and the audio signal, thereby reducing the operation amount of the processor 4 to improve the processing efficiency.
Furthermore, the multi-path live broadcast guiding device provided by the invention further comprises a USB controller 6; and the USB controller 6 is arranged on the shell and connected with the processor 4 and is used for receiving USB audio and video data by being connected with an external USB video signal source. That is, the processor 4 can process not only the audio/video data of the HDMI signal source but also the audio/video data of the USB video signal source. The invention can simultaneously guide and broadcast the audio and video data of three external video signal sources without adding a guide and broadcast table, thereby reducing the live broadcast cost. In other embodiments, the processing and guiding can be performed on the network audio/video data of the external network signal source, so that the application of some complex scenes can be satisfied.
Furthermore, the multi-path live broadcast guiding and broadcasting device provided by the invention further comprises a wireless communication module 7; the wireless communication module 7 is arranged on the shell and connected with the processor 4, and is used for enabling the processor 4 to interact data with an external server through the wireless communication module 7. The wireless communication module 7 is one or more of a wifi communication module, a 3G communication module and a 4G communication module. Therefore, various network connection modes are supported, and wifi, 3G and 4G communication modes are supported. Of course, in other embodiments, a wired communication module may be provided to support a wired communication manner.
As shown in fig. 2, a circuit schematic diagram of a storage module 8 is shown, and the multi-path live broadcast guiding device provided by the invention further includes the storage module 8; the storage module 8 is arranged on the shell, is connected with the processor 4 through an SD interface of the processor 4, and is used for storing the processed final audio/video signals. In this embodiment, the memory module 8 may be an SD card, and pins thereof are defined in table 1 below;
table 1:
| pin | Name of the name | Type(s) | Description of the invention |
| 1 | CD | I/O/PP | Card monitoring data bit 3 |
| 2 | CMD | PP | Command/reply |
| 3 | VSS | S | Ground (floor) |
| 4 | VCC | S | Supply voltage |
| 5 | CLK | I | Clock |
| 6 | CSS2 | S | Ground (floor) |
| 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 on the SD card are clocked by an internal clock generator, whose interface drive unit synchronizes the DAT and CMD signals of the external clock to the internally used clock. It is controlled by 6 line SD card interface, including: CMD, CLK, DAT0-DAT3. In other embodiments, in order to identify the SD card, a card identification register (CID) and a corresponding address Register (RCA) are required to be prepared in advance. An additional register is required to include different types of operating parameters. Communication whether to access memory or registers using SD card lines is defined by the SD card standard. The SD card can realize the recording function of the accessed video, and the video content is directly stored to the SD.
Further, in order to extend the output function and enable connection with multiple types of devices, the output interface 5 is one or more of a USB host interface, a USB-to-ethernet interface, and a type-c interface.
In an embodiment, when the output interface 5 is a DSI interface, a third HDMI conversion module may be further provided. And the third HDMI conversion module is connected with the DSI interface and used for converting the audio and video signals into compatible HDMI and outputting the compatible HDMI to an external display to finish the HDMI output.
As shown in fig. 3, a circuit diagram of the third HDMI conversion module is shown. The third HDMI conversion module is the same as the first HDMI conversion module 1 and the second HDMI conversion module 2, and is implemented by using an HDMI-to-Mipi bridge chip and its peripheral circuits. But its model is hdmi_atom-a03623, which is different from the first HDMI conversion module 1 and the second HDMI conversion module 2. The chip operates on a 1.8V power supply, operates at a pixel clock of 25MHz to 154MHz, and provides HDMI/MHL data output with optional S/PDIF or 2 channel I2S serial audio input, while the chip has a high fidelity 2 channel I2S sampling rate that can send stereo up to 192 kHz. S/PDIF may carry stereo LPCM audio or compressed audio, selectively decoded for different external receiving devices (different displays)And the DSI 18bpp RGB666 and 24bpp RGB888 data packets are formatted, and finally the audio and video data are converted into compatible HDMI and output to an external display to complete the HDMI output function.
Although the present invention has been described in terms of the preferred embodiments, it is not intended to be limited to the embodiments, and any person skilled in the art can make any possible variations and modifications to the technical solution of the present invention by using the methods and technical matters disclosed above without departing from the spirit and scope of the present invention, so any simple modifications, equivalent variations and modifications to the embodiments described above according to the technical matters of the present invention are within the scope of the technical matters of the present invention.
Claims (10)
1. The multi-channel live broadcast guiding and broadcasting device is characterized by comprising a shell, a first HDMI conversion module, a second HDMI conversion module, an audio frequency change-over switch, a processor and an output interface;
the first HDMI conversion module is arranged on the shell, is respectively connected with a first ISP interface and an audio frequency change-over switch of the processor, and is used for receiving first audio/video data of an external first path HDMI signal source, and converting the first audio/video data by utilizing a built-in circuit to obtain a first image signal and a first audio signal;
the second HDMI conversion module is arranged on the shell, is respectively connected with a second ISP interface and an audio frequency change-over switch of the processor, and is used for receiving second audio/video data of an external second path HDMI signal source and converting the second audio/video data by utilizing a built-in circuit to obtain a second image signal and a second audio signal;
the audio frequency switching switch is arranged in the shell, connected with the DSP controller of the processor and used for switching and inputting the first audio frequency signal and the second audio frequency signal;
the processor is arranged in the shell and connected with the output interface port, and is used for processing audio and video signals of the first image signal received by the first ISP interface, the second image signal received by the second ISP interface, and the first audio signal and the second audio signal received by the DSP controller according to a preset instruction to obtain audio and video signals;
the output interface is arranged on the shell and is used for outputting the final audio and video signals processed by the processor to external display equipment.
2. The multi-channel live broadcast guide apparatus of claim 1, wherein the first HDMI conversion module comprises an HDMI-to-Mipi bridge chip and peripheral circuitry thereof.
3. The multi-channel live broadcast guide apparatus of claim 2, wherein the second HDMI conversion module comprises an HDMI-to-Mipi bridge chip and peripheral circuits thereof.
4. The multi-channel live broadcasting guide device as claimed in claim 3, wherein the type of the HDMI-to-Mipi bridge chip of the first HDMI conversion module is the same as the type of the HDMI-to-Mipi bridge chip of the second HDMI conversion module, and both are TC358840XBG.
5. The multi-channel live broadcast guide apparatus as claimed in any one of claims 1-4, further comprising a USB controller;
the USB controller is arranged on the shell and connected with the processor and used for receiving USB audio and video data by being connected with an external USB video signal source.
6. The multi-channel live broadcast guide apparatus of claim 5, further comprising a wireless communication module;
the wireless communication module is arranged on the shell and connected with the processor, and is used for enabling the processor to interact data with an external server through the wireless communication module.
7. The multi-channel live broadcast guiding device according to claim 6, wherein the wireless communication module is one or more of a wifi communication module, a 3G communication module and a 4G communication module.
8. The multi-channel live broadcast guide apparatus of claim 5, further comprising a storage module;
the storage module is arranged on the shell, is connected with the processor through an SD interface of the processor and is used for storing the processed final audio/video signals.
9. The multi-channel live broadcast guiding device according to claim 5, wherein the output interface is one or more of a USB host interface, a USB-to-ethernet interface, and a type-c interface.
10. The multi-channel live broadcast guide apparatus of claim 9, further comprising a third HDMI conversion module;
and the third HDMI conversion module is connected with the DSI interface and used for converting the audio and video signals into compatible HDMI and outputting the compatible HDMI to an external display to finish the HDMI output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023017.1A CN109743475B (en) | 2019-01-10 | 2019-01-10 | Guide broadcasting device for multipath live broadcasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023017.1A CN109743475B (en) | 2019-01-10 | 2019-01-10 | Guide broadcasting device for multipath live broadcasting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109743475A CN109743475A (en) | 2019-05-10 |
| CN109743475B true CN109743475B (en) | 2023-12-12 |
Family
ID=66364244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910023017.1A Active CN109743475B (en) | 2019-01-10 | 2019-01-10 | Guide broadcasting device for multipath live broadcasting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109743475B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111083409A (en) * | 2019-12-27 | 2020-04-28 | 苏州斯拓锐网络科技有限公司 | Novel AI picture passes module |
| 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 |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202475638U (en) * | 2011-12-23 | 2012-10-03 | 深圳市巨潮科技有限公司 | Converting device of multi-path composite HDMI audio frequency video signal |
| KR101477220B1 (en) * | 2014-01-20 | 2014-12-29 | (주)매트릭스미디어 | Matrix switching apparatus of digital broadcasting system |
| CN205081870U (en) * | 2015-10-23 | 2016-03-09 | 四川九州电子科技股份有限公司 | Support urgent broadcasting intelligent terminal of many signal sources input |
| CN205693774U (en) * | 2016-06-28 | 2016-11-16 | 徐文波 | Video guide's equipment |
| CN206517484U (en) * | 2016-11-30 | 2017-09-22 | 徐文波 | Audio frequency and video instructor in broadcasting's equipment |
| CN107707788A (en) * | 2017-11-09 | 2018-02-16 | 安徽天行云视科技有限公司 | A kind of live all-in-one |
| CN207200876U (en) * | 2017-08-24 | 2018-04-06 | 深圳市播是玩信息科技有限公司 | Multinuclear video capture device |
| WO2018077259A1 (en) * | 2016-10-31 | 2018-05-03 | 腾讯科技（深圳）有限公司 | Media information handover method and server, and computer storage medium |
| CN207321383U (en) * | 2017-11-09 | 2018-05-04 | 安徽天行云视科技有限公司 | Rack regarding the live all-in-one machines of E8 in a kind of day |
| CN109167938A (en) * | 2018-08-27 | 2019-01-08 | 佛山龙眼传媒科技有限公司 | A kind of foot-operated two-way instructor in broadcasting platform and the director method using it, system |
| CN209330214U (en) * | 2019-01-10 | 2019-08-30 | 杭州星犀科技有限公司 | The presentation-guiding device of multichannel live streaming |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013026859A (en) * | 2011-07-21 | 2013-02-04 | Toshiba Corp | Video display device, information reproduction method and information reproduction device |
-
2019
- 2019-01-10 CN CN201910023017.1A patent/CN109743475B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202475638U (en) * | 2011-12-23 | 2012-10-03 | 深圳市巨潮科技有限公司 | Converting device of multi-path composite HDMI audio frequency video signal |
| KR101477220B1 (en) * | 2014-01-20 | 2014-12-29 | (주)매트릭스미디어 | Matrix switching apparatus of digital broadcasting system |
| CN205081870U (en) * | 2015-10-23 | 2016-03-09 | 四川九州电子科技股份有限公司 | Support urgent broadcasting intelligent terminal of many signal sources input |
| CN205693774U (en) * | 2016-06-28 | 2016-11-16 | 徐文波 | Video guide's equipment |
| WO2018077259A1 (en) * | 2016-10-31 | 2018-05-03 | 腾讯科技（深圳）有限公司 | Media information handover method and server, and computer storage medium |
| CN206517484U (en) * | 2016-11-30 | 2017-09-22 | 徐文波 | Audio frequency and video instructor in broadcasting's equipment |
| CN207200876U (en) * | 2017-08-24 | 2018-04-06 | 深圳市播是玩信息科技有限公司 | Multinuclear video capture device |
| CN107707788A (en) * | 2017-11-09 | 2018-02-16 | 安徽天行云视科技有限公司 | A kind of live all-in-one |
| CN207321383U (en) * | 2017-11-09 | 2018-05-04 | 安徽天行云视科技有限公司 | Rack regarding the live all-in-one machines of E8 in a kind of day |
| CN109167938A (en) * | 2018-08-27 | 2019-01-08 | 佛山龙眼传媒科技有限公司 | A kind of foot-operated two-way instructor in broadcasting platform and the director method using it, system |
| CN209330214U (en) * | 2019-01-10 | 2019-08-30 | 杭州星犀科技有限公司 | The presentation-guiding device of multichannel live streaming |
Non-Patent Citations (3)
| Title |
|---|
| 3DTV Broadcasting and Distribution Systems;Nambo Hur et al.;《IEEE Transcations on Broadcasting》;全文 * |
| DVB***中多场景电视关键技术研究;孟令军;《中国优秀硕士学位论文全文数据库（电子期刊）》;全文 * |
| 辽阳台DDL数字导播***的设计与建立;郑本源 李宇;《现代电视技术》(第6期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109743475A (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100440947C (en) | Multifunctional television | |
| CN107728991A (en) | Electronic equipment and FM player methods | |
| CN109743475B (en) | Guide broadcasting device for multipath live broadcasting | |
| CN102378081B (en) | Electronic equipment and manner of articulation thereof and a kind of audio amplifier | |
| CN103402068A (en) | Uncompressed video play system and method | |
| US8190582B2 (en) | Multi-processor | |
| CN104301657A (en) | Conference television terminal and auxiliary flow data access method thereof | |
| CN105491368A (en) | FPGA-based 4K naked-eye 3D all-in-one machine and video playing method thereof | |
| US20080104298A1 (en) | Expandable Express Card Capable of Isolating Noise and Method for Combining Functionalities of the Express Card with a Non-Host Device | |
| CN209330214U (en) | The presentation-guiding device of multichannel live streaming | |
| CN204575844U (en) | A kind of New Type Radar information acquisition apparatus | |
| CN213846839U (en) | Multimedia decoding device of digital broadcasting system and digital broadcasting system | |
| CN111711800B (en) | Image processing method and device for tiled display screen and storage medium | |
| CN211791821U (en) | Satellite-borne video compression device for directly transmitting video data to ground | |
| KR20150102333A (en) | Receiving broadcasting signal apparatus and control method of the same | |
| CN103096148A (en) | Cloud television intelligent terminal product | |
| CN202679492U (en) | Image splicing device possessing video recording and playing function | |
| CN102307199A (en) | Multimedia transmission and processing apparatus | |
| CN101202876A (en) | Method for implementing synchronization of audio and picture by using audio frequency and video frequency composite channel in DVR | |
| CN204578645U (en) | A kind of multichannel audio-video frequency switched system | |
| CN109995968A (en) | A kind of playing control system | |
| CN201039355Y (en) | Video/audio playing device with high-speed USB interface circuit | |
| CN207867495U (en) | A kind of DSP circuit broadcasting control card based on remote multi-media | |
| CN205378047U (en) | Can realize full passageway editor's of EDID video matrix switch | |
| CN219016885U (en) | Dull and stereotyped high expansibility mainboard of intelligence trade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |