CN113473037A - Switching table Tally signal conversion system - Google Patents
Switching table Tally signal conversion system Download PDFInfo
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- CN113473037A CN113473037A CN202010233898.2A CN202010233898A CN113473037A CN 113473037 A CN113473037 A CN 113473037A CN 202010233898 A CN202010233898 A CN 202010233898A CN 113473037 A CN113473037 A CN 113473037A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 81
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 238000012163 sequencing technique Methods 0.000 claims abstract description 4
- 238000004806 packaging method and process Methods 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4621—Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64322—IP
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
Abstract
The invention discloses a Tally signal conversion system of a switching station, and relates to the technical field of signal conversion systems. The system comprises a Tally signal conversion module, a switching platform, a power supply, a fan and a case, wherein the Tally signal conversion module is used for converting TTL levels output by the switching platform into IP data streams, and a server is used for sequencing the sequence of the TTL levels in the IP data streams, associating the TTL levels with equipment in a wireless video transmission system, packaging the data and sending the data to the wireless video transmission system by installing Tally system control software. The switching station analog TTL level signal can be converted into an IP data stream, parameter control of a wireless video transmission system is achieved by combining system software, such as code stream rate, transmitting power and the like, the wireless video transmission system has the advantages that multi-channel video wireless transmission can be achieved, and multi-channel live video wireless transmission capable of being deployed rapidly can be achieved.
Description
Technical Field
The invention relates to the technical field of signal conversion systems, in particular to a Tally signal conversion system of a switching station.
Background
With the rise of new media and 'live show' programs in recent years, new requirements are put forward for television program production, more and more wireless video transmission machine positions are needed to enrich the pictures of the programs and reduce the transmission cost in the shooting of a plurality of programs, some of the machine positions are long-distance machine positions, some of the machine positions are carried out in quick movement, the change of program scenes is quick, and the system is required to be quickly built and deployed.
The traditional wireless transmission technology based on microwave is difficult to realize, the construction period is long, the equipment amount is large, and the frequency selection and debugging are very difficult, so that a multi-channel live video wireless transmission system capable of realizing multi-channel video wireless transmission and realizing rapid deployment is urgently needed, and therefore, a switching platform Tally signal conversion system is provided to solve the problems.
Disclosure of Invention
The invention provides a Tally signal conversion system of a switching station, which can convert TTL level signals simulated by the switching station into IP data streams and realize parameter control of a wireless video transmission system by combining system software, such as code stream rate, transmitting power and the like.
In order to realize the wireless transmission of multiple paths of videos and the wireless transmission of multiple paths of live videos which can be deployed quickly, the invention provides the following technical scheme: a switching station Tally signal conversion system comprises a Tally signal conversion module, a switching station, a power supply, a fan and a case, wherein the Tally signal conversion module is used for converting TTL levels output by the switching station into IP data streams;
the Tally signal conversion module mainly comprises voltage detection, MCU, network conversion and a power supply, wherein the input end of the voltage detection circuit is electrically connected with the output end of the switching table, the output end of the voltage detection circuit is electrically connected with the input end of the MCU, the output end of the MCU is electrically connected with the input end of the network conversion module, the output end of the network conversion module is electrically connected with the input end of the server, and the power supply module supplies power for the voltage detection, the MCU and the network conversion.
As a preferred technical solution of the present invention, an output end of the Tally conversion module is electrically connected to a server and an input end of an indicator light.
As a preferred technical solution of the present invention, the voltage detection circuit is used to detect a Tally signal output by the switching station, and perform protocol analysis, conversion and control through the MCU, and the network conversion module is used to complete the conversion from the application layer to the physical layer.
As a preferred technical scheme of the invention, after being electrified, the MCU is automatically connected to the network through a network conversion module of an SPI bus interface through a TCP/IP protocol, and then the voltage detection circuit detects and reads the port state of the TALLY in real time, and after finding the port change, the MCU sends data to a specified server port through the network conversion module.
As a preferred technical scheme of the invention, the TTL level signal output by the switching station is converted into IP data flow, and the parameter control of the wireless video transmission system, such as code stream rate, transmitting power and the like, is realized by combining system software.
As a preferred technical scheme of the invention, the Tally conversion equipment is connected with the switching station through a serial port to acquire a TTL level signal output by the switching station, and outputs a TCP IP data stream to a wireless video transmission system after system conversion.
As a preferable aspect of the present invention, the indicator light displays a state of signal input, a power supply state, and a state of the fan.
As a preferred technical scheme of the invention, the Tally conversion module, the server, the power supply, the fan and the indicator light are all arranged in the heat dissipation case.
Compared with the prior art, the invention provides a switching station Tally signal conversion system, which has the following beneficial effects:
the Tally signal conversion system of the switching station can convert TTL level signals simulated by the switching station into IP data streams and combine system software to realize parameter control of a wireless video transmission system, such as code stream rate, transmitting power and the like.
Drawings
Fig. 1 is a correlation diagram of a Tally signal conversion system of a switching station according to the present invention;
FIG. 2 is a schematic block diagram of a Tally signal conversion system of a switching station according to the present invention;
fig. 3 is a schematic block diagram of the Tally signal conversion module according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the invention discloses a switching station Tally signal conversion system, which comprises a Tally signal conversion module, a switching station, a power supply, a fan and a case, wherein the Tally signal conversion module is used for converting TTL levels output by the switching station into IP data streams, a server is used for sequencing the sequence of the TTL levels in the IP data streams by installing Tally system control software, associating the TTL levels with equipment in a wireless video transmission system, packaging the data and sending the data to the wireless video transmission system, and the power supply is used for supplying power to the Tally signal conversion module, the server, the fan and an indicator light;
the Tally signal conversion module mainly comprises voltage detection, MCU, network conversion and a power supply, wherein the input end of the voltage detection circuit is electrically connected with the output end of the switching table, the output end of the voltage detection circuit is electrically connected with the input end of the MCU, the output end of the MCU is electrically connected with the input end of the network conversion module, the output end of the network conversion module is electrically connected with the input end of the server, and the power supply module supplies power for the voltage detection, the MCU and the network conversion.
As shown in fig. 1, the present invention provides a Tally signal conversion system of a switching station, which converts TTL level signals output by the switching station into IP data streams and combines system software to realize parameter control, such as code stream rate, transmission power, etc., for a wireless video transmission system, wherein a Tally conversion device is connected with the switching station through a serial port to obtain TTL level signals output by the switching station, and outputs TCP IP data streams to the wireless video transmission system after system conversion.
As shown in fig. 2, in the Tally signal conversion system for the switching station, a Tally conversion module converts TTL levels output by the switching station into IP data streams, a Tally system control software installed in a server realizes sequencing of the TTL levels in the IP data streams and association with video transmitting terminal equipment in a wireless video transmission system, and then packages the data according to a certain format and sends the data to the wireless video transmission system, a power supply supplies power to the Tally conversion module, the server, a fan and an indicator light, the indicator light displays the state of signal input, the state of the power supply and the state of the fan, and the Tally conversion module, the server, the power supply, the fan and the indicator light are all installed in a heat dissipation case.
As shown in fig. 3, the Tally signal conversion module mainly comprises a voltage detection circuit, an MCU, a network conversion module and a power supply, wherein the voltage detection circuit is used to detect the Tally signal output by the switching station, and the MCU is used to perform protocol analysis conversion and control, and the network conversion module is used to complete the conversion from the application layer to the physical layer, and the working process thereof is as follows: the MCU is automatically connected to the network through a network conversion module of the SPI bus interface after being electrified, the state of a TALLY port is detected and read in real time through the voltage detection circuit, and data are sent to a specified server port through the network conversion module after the port change is found.
In conclusion, the Tally signal conversion system of the switching station can convert TTL level signals simulated by the switching station into IP data streams and combine system software to realize parameter control of a wireless video transmission system, such as code stream rate, transmitting power and the like, has the advantages of being capable of realizing multi-channel video wireless transmission and realizing rapid deployed multi-channel live video wireless transmission, and meanwhile has a construction period section, is simple in frequency selection and debugging and further has good popularization value.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a switch platform Tally signal conversion system, includes Tally signal conversion module, switches platform, power, fan and quick-witted case and constitutes its characterized in that: the Tally conversion module is used for converting TTL levels output by the switching station into IP data streams, the server is used for sequencing the sequence of the TTL levels in the IP data streams by installing Tally system control software, associating the TTL levels with equipment in the wireless video transmission system, packaging the data and sending the data to the wireless video transmission system, and the power supply is used for supplying power to the Tally conversion module, the server, the fan and the indicating lamp;
the Tally signal conversion module mainly comprises voltage detection, MCU, network conversion and a power supply, wherein the input end of the voltage detection circuit is electrically connected with the output end of the switching table, the output end of the voltage detection circuit is electrically connected with the input end of the MCU, the output end of the MCU is electrically connected with the input end of the network conversion module, the output end of the network conversion module is electrically connected with the input end of the server, and the power supply module supplies power for the voltage detection, the MCU and the network conversion.
2. The switching station Tally signal conversion system of claim 1, wherein: the output end of the Tally conversion module is electrically connected with the input ends of the server and the indicator lamp.
3. The switching station Tally signal conversion system of claim 1, wherein: the voltage detection circuit is used for detecting a Tally signal output by the switching station, performing protocol analysis conversion and control through the MCU, and the network conversion module is used for completing conversion from an application layer to a physical layer.
4. The switching station Tally signal conversion system of claim 3, wherein: the working process is as follows: the MCU is automatically connected to the network through a network conversion module of the SPI bus interface after being electrified, the state of a TALLY port is detected and read in real time through the voltage detection circuit, and data are sent to a specified server port through the network conversion module after the port change is found.
5. The switching station Tally signal conversion system of claim 1, wherein: the TTL level signal output by the switching station is converted into IP data flow, and parameter control such as code flow rate, transmitting power and the like of a wireless video transmission system is realized by combining system software.
6. The switching station Tally signal conversion system of claim 5, wherein: the Tally conversion equipment is connected with the switching station through a serial port to acquire a TTL level signal output by the switching station, and outputs a TCP IP data stream to the wireless video transmission system after system conversion.
7. The switching station Tally signal conversion system of claim 1, wherein: the indicator light displays the state of signal input, the power supply state and the state of the fan.
8. The switching station Tally signal conversion system of claim 1, wherein: and the Tally conversion module, the server, the power supply, the fan and the indicator lamp are all arranged in the heat dissipation case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010233898.2A CN113473037A (en) | 2020-03-30 | 2020-03-30 | Switching table Tally signal conversion system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010233898.2A CN113473037A (en) | 2020-03-30 | 2020-03-30 | Switching table Tally signal conversion system |
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| CN113473037A true CN113473037A (en) | 2021-10-01 |
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| CN202010233898.2A Pending CN113473037A (en) | 2020-03-30 | 2020-03-30 | Switching table Tally signal conversion system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160248989A1 (en) * | 2015-02-24 | 2016-08-25 | Newtek, Inc. | Method and Apparatus for Adaptively Mixing Video Source Signals |
| CN106804014A (en) * | 2017-02-20 | 2017-06-06 | 江苏省广播电视总台 | A kind of medium living broadcast method based on 4G wireless private networks |
| CN109889699A (en) * | 2019-02-15 | 2019-06-14 | 深圳市昊一源科技有限公司 | Wireless communication host, wireless communication tally system and retransmission method |
| CN209089106U (en) * | 2018-12-12 | 2019-07-09 | 山东联讯数码科技有限公司 | A kind of Tally trigger signal conversion equipment that instructor in broadcasting uses |
| CN209218189U (en) * | 2019-02-15 | 2019-08-06 | 深圳市昊一源科技有限公司 | A kind of wireless tally handset and system |
| CN209823749U (en) * | 2019-07-02 | 2019-12-20 | 深圳市综科智控科技开发有限公司 | Interface multiplexing device capable of simultaneously realizing wired communication and wireless communication |
| CN110620909A (en) * | 2019-09-23 | 2019-12-27 | 上海东方传媒技术有限公司 | Digital Tally system |
-
2020
- 2020-03-30 CN CN202010233898.2A patent/CN113473037A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160248989A1 (en) * | 2015-02-24 | 2016-08-25 | Newtek, Inc. | Method and Apparatus for Adaptively Mixing Video Source Signals |
| CN106804014A (en) * | 2017-02-20 | 2017-06-06 | 江苏省广播电视总台 | A kind of medium living broadcast method based on 4G wireless private networks |
| CN209089106U (en) * | 2018-12-12 | 2019-07-09 | 山东联讯数码科技有限公司 | A kind of Tally trigger signal conversion equipment that instructor in broadcasting uses |
| CN109889699A (en) * | 2019-02-15 | 2019-06-14 | 深圳市昊一源科技有限公司 | Wireless communication host, wireless communication tally system and retransmission method |
| CN209218189U (en) * | 2019-02-15 | 2019-08-06 | 深圳市昊一源科技有限公司 | A kind of wireless tally handset and system |
| CN209823749U (en) * | 2019-07-02 | 2019-12-20 | 深圳市综科智控科技开发有限公司 | Interface multiplexing device capable of simultaneously realizing wired communication and wireless communication |
| CN110620909A (en) * | 2019-09-23 | 2019-12-27 | 上海东方传媒技术有限公司 | Digital Tally system |
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Application publication date: 20211001 |