CN114866786A

CN114866786A - Television signal manufacturing method, system, equipment, chip and storage medium

Info

Publication number: CN114866786A
Application number: CN202210454532.7A
Authority: CN
Inventors: 李培; 陈欣; 李东洲; 赵志鹏; 尹利; 李增辉; 郭潇; 戴佳婕; 渠浩; 刘小瑾
Original assignee: Beijing Zhongke Dayang Infotech Co ltd; China Media Group
Current assignee: Beijing Zhongke Dayang Infotech Co ltd; China Media Group
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-08-05

Abstract

The embodiment of the application discloses a manufacturing method, a manufacturing system, electronic equipment, a chip and a computer readable storage medium of a television signal, wherein the method is applied to a first system and comprises the following steps: receiving N paths of first code rate camera signals sent by a second system through a first communication mode, and receiving N paths of second code rate camera signals sent by the second system through a second communication mode, wherein the first code rate is lower than the second code rate; making broadcast-grade television signals based on the N paths of first code rate camera signals and the N paths of second code rate camera signals; the N paths of first code rate camera signals and the N paths of second code rate camera signals have a corresponding relation, the signal sources of the first code rate camera signals and the second code rate camera signals with the corresponding relation are from the same camera, and N is a positive integer.

Description

Television signal manufacturing method, system, equipment, chip and storage medium

Technical Field

The present application relates to the field of television signal technology, and in particular, to a method and a system for manufacturing a television signal, an electronic device, a chip, and a computer-readable storage medium.

Background

At present, the manufacturing process of broadcast television signals encounters a lot of barriers, for example, the balance between the signal quality and the instantaneity of signal transmission is difficult, a lot of manpower and physical costs are consumed for the manufacturing of cross-region television programs, and a lot of limitations are also imposed on the deployment site of a relay van and an Electronic Field Product (EFP) system, which are problems to be solved urgently.

Disclosure of Invention

In order to solve at least some of the above technical problems, embodiments of the present application provide a method and a system for manufacturing a television signal, an electronic device, a chip, and a computer-readable storage medium.

The technical scheme of the embodiment of the application is realized as follows:

in a first aspect, an embodiment of the present application provides a method for making a television signal, which is applied to a first system, and the method includes:

receiving N paths of first code rate camera signals sent by a second system through a first communication mode, and receiving N paths of second code rate camera signals sent by the second system through a second communication mode, wherein the first code rate is lower than the second code rate;

making broadcast-grade television signals based on the N paths of first code rate camera signals and the N paths of second code rate camera signals;

the N paths of first code rate camera signals and the N paths of second code rate camera signals have a corresponding relation, the signal sources of the first code rate camera signals and the second code rate camera signals with the corresponding relation are from the same camera, and N is a positive integer.

In a second aspect, an embodiment of the present application provides a method for making a television signal, which is applied to a second system, and includes:

sending N paths of first code rate camera signals to a first system through a first communication mode, and sending N paths of second code rate camera signals to the first system through a second communication mode, wherein the first code rate is lower than the second code rate;

In a third aspect, an embodiment of the present application provides a system for producing a television signal, including a first system and a second system; wherein the content of the first and second substances,

the second system, comprising:

a second sending module, configured to send, to a first system through a first communication manner, N first code rate camera signals encoded by N RTC encoders, and send, to the first system through a second communication manner, N second code rate camera signals encoded by N SRT encoders, where the first code rate is lower than the second code rate;

the first system, comprising:

the first receiving module is used for receiving N paths of first code rate camera signals sent by a second system through a first communication mode and receiving N paths of second code rate camera signals sent by the second system through a second communication mode;

the manufacturing module is used for manufacturing broadcast television signals based on the N paths of first code rate camera signals and the N paths of second code rate camera signals;

In a fourth aspect, the present application provides an electronic device comprising: the television signal production method comprises a processor and a memory, wherein the memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing any one of the television signal production methods provided by the embodiment of the application.

In a fifth aspect, the present application provides a chip comprising: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes any television signal making method provided by the embodiment of the application.

In a sixth aspect, the present application provides a computer-readable storage medium for storing a computer program, where the computer program enables a computer to execute any one of the television signal production methods provided in the embodiments of the present application.

According to the technical scheme provided by the embodiment of the application, the camera signals collected by the same camera are divided into the first code rate camera signals and the second code rate camera signals, the first code rate camera signals are high in transmission speed and used for the director to preview and execute switching operation, the second code rate camera signals are used for making broadcast-grade television signals for audiences to watch, the problems of poor transmission signal quality and large transmission delay of remote signals in remote signal making are solved, and real high-quality television remote making becomes possible.

Drawings

Fig. 1 is a schematic view of a first implementation flow of a television signal manufacturing method according to an embodiment of the present application;

fig. 2 is a schematic flow chart illustrating an implementation process of a television signal manufacturing method according to an embodiment of the present application;

fig. 3 is a schematic overall flow chart of a television signal production method provided in application example 1 of the present application;

fig. 4 is a schematic diagram of a camera signal transmission flow in application example 1 of the present application;

fig. 5 is a schematic diagram of a PGM linkage switching flow in application example 1 of the present application;

fig. 6 is a schematic flow chart of implementing remote call, remote talely, and remote PGM foldback in application example 1 of the present application;

FIG. 7 is a schematic flow chart of an application example 1 of the present application for realizing control signal transmission;

fig. 8 is a schematic block diagram of a television signal producing system 800 according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

fig. 10 is a schematic structural diagram of a chip of an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.

It should be noted that, in the embodiment of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the embodiment of the present application, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "correspond" may indicate that there is a direct correspondence or an indirect correspondence between the two, may also indicate that there is an association between the two, and may also indicate and be indicated, configure and configured, and so on.

For the convenience of understanding of the technical solutions of the embodiments of the present application, the following related technologies of the embodiments of the present application are described below, and the following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as alternatives, and all of them belong to the protection scope of the embodiments of the present application.

The RTC encoder is used for realizing instant high-definition audio and video communication service based on an RTC protocol and has the characteristics of low time delay and high smoothness. The functions of daily line connection conversation, returned picture monitoring, collected picture monitoring, TALLY display and the like can be met. The RTC encoder is designed by adopting an embedded operating system, is oriented to live video live broadcast, coding transmission and live broadcast connection interaction in the universal media industry, and supports the functions of realizing coding transmission of high-quality and low-delay video and audio signals, realizing live broadcast connection interaction with a connected client and a studio and the like under the network environments of 5G, WAN, WIFI and the like. The product has a broadcast-level video-audio interface and coding capability, and can realize the acquisition coding and the plug-flow transmission of high-definition videos. The monitoring and monitoring of the collected video and the returned video are provided, and call connection can be realized.

Several television signal production schemes are introduced below:

scheme A: only use RTC protocol to carry out the signal transmission of the event, the scene in advance of the event, staff inserts the camera signal into RTC protocol encoder and transmits to the high in the clouds through the internet, and the back is directed to broadcast and is switched all-in-one and is done the direction broadcast and switch after drawing a class.

Scheme B: the SRT protocol is only used for event signal transmission, in the event of a pre-event, a worker accesses a camera signal into the SRT protocol encoder and transmits the signal to a rear decoder through the Internet, and the decoder decodes the signal and then transmits the signal to a video switching station for director switching.

Scheme C: and a large number of EFP system devices or rebroadcasting vehicles are carried to the competition field to complete the production of the public signals.

The above solution has the following drawbacks:

scheme A: the transmission of the low-code-rate coding results in poor image quality of the transmitted signals, which cannot reach the broadcasting standard and has poor effect.

Scheme B: the adoption of high-code-rate coding transmission causes large signal transmission delay, the director and the cameraman cannot effectively communicate picture composition in real time, the manufacturing form is single, and a series of problems such as discontinuous cutting process, black field and the like can be caused.

Scheme C: a large amount of manpower and material resources are consumed, the cost investment is too high, and the method is also limited by factors such as the use scene of the relay truck.

In view of the above-mentioned drawbacks of the related art, the following technical solutions of the embodiments of the present application are proposed.

So that the manner in which the features and aspects of the present application can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.

It should be noted that, in the embodiment of the present application, "the first system" may be referred to as a production system or a bottom field center or a bottom field production center, and "the second system" may be referred to as a recording system or a top field center or a top field recording center. The first system and the second system can be in a remote communication mode, and the second system can also be called a remote manufacturing system or a back field remote center or a back field remote manufacturing center. The names of the "first system" and the "second system" are not limited in the present application.

It should be noted that the technical solution of the embodiment of the present application can be applied to television signals of any scenes, for example, television signals of sports events, television signals of singing evening, television signals of on-screen type, and the like.

Fig. 1 is a schematic flow chart illustrating an implementation process of a television signal manufacturing method according to an embodiment of the present application, as shown in fig. 1, a television signal manufacturing method according to an embodiment of the present application is applied to a first system, and the method includes:

step 101: receiving N paths of first code rate camera signals sent by a second system through a first communication mode, and receiving N paths of second code rate camera signals sent by the second system through a second communication mode, wherein the first code rate is lower than the second code rate.

Here, the first communication mode may be a communication mode based on a public cloud, and a virtual device may be disposed on the public cloud, so that each function is better combined, and subsequent function expansion is facilitated, the second communication mode may be based on a base station, for example, a 5G communication mode, and the stability of the second code rate camera signal transmission process may be ensured by using the 5G communication mode, and of course, the first communication mode and the second communication mode may also use the communication modes thereof to transmit signals, which is not limited in this application.

Based on this, in the television signal manufacturing method provided in an embodiment of the present application, the first communication mode is a communication mode based on a public cloud, and the second communication mode is a communication mode based on a base station.

Furthermore, the first code rate camera signal and the second code rate camera signal can be received and/or sent through an exchanger in the second system, the first exchanger in the first system receives N paths of first code rate camera signals sent by the second system, the first exchanger sends the received N paths of first code rate camera signals to the director switching all-in-one machine in the second system, the second exchanger in the first system receives N paths of second code rate camera signals sent by the second system, and the second exchanger sends the N paths of second code rate camera signals to the SRT decoder for processing, so that a foundation is provided for the next production of television signals.

Based on this, the method for manufacturing a television signal, which is provided in an embodiment of the present application, for receiving N paths of first code rate camera signals sent by a second system, includes:

receiving N paths of first code rate camera signals sent by a second system through a first switch;

the method further comprises the following steps: and sending the N paths of first code rate camera signals to the body director switching all-in-one machine.

In a method for producing a television signal according to another embodiment of the present application, the receiving N channels of second code rate camera signals sent by the second system includes:

receiving N paths of second code rate camera signals sent by the second system through a second switch;

the method further comprises the following steps: and sending the N paths of second code rate camera signals to an SRT decoder.

Step 102: making broadcast-grade television signals based on the N paths of first code rate camera signals and the N paths of second code rate camera signals; the N paths of first code rate camera signals and the N paths of second code rate camera signals have a corresponding relation, the signal sources of the first code rate camera signals and the second code rate camera signals with the corresponding relation are from the same camera, and N is a positive integer.

For camera signals acquired by the same camera, because the first code rate is lower than the second code rate, in signal transmission, the first code rate camera signals reach the first system for processing, the first code rate camera signals are used for being used for Program bus (PGM) switching by a director, linkage switching signals are sent, television signals are manufactured based on the second code rate camera signals and the linkage switching signals, further, N paths of the first code rate camera signals are transmitted to the director switching all-in-one machine, the director switching all-in-one machine obtains switching operation of the director, the first PGM is obtained, linkage switching instructions are sent to the video switching station, and broadcast-level television signals are manufactured based on N paths of the second code rate camera signals and the linkage switching instructions.

Based on this, the method for producing a television signal provided in an embodiment of the present application, for producing a broadcast-level television signal based on the N paths of first code rate camera signals and the N paths of second code rate camera signals, includes:

based on the N paths of first code rate camera signals, obtaining switching operation of a first PGM aiming at the director switching all-in-one machine, and sending a linkage switching instruction to a video switching table through the director switching all-in-one machine;

and manufacturing broadcast-grade television signals based on the N paths of second code rate camera signals and the linkage switching instruction.

Specifically, the N channels of second-rate camera signals are decoded by the SRT decoder and then sent to the video switching console, N channels of camera video baseband signals corresponding to the N channels of second-rate camera signals are sent to the de-embedder, and N channels of camera signals corresponding to the N channels of second-rate camera signals are sent to the de-embedder.

Based on N paths of video baseband signals, after receiving a linkage switching instruction, broadcast-level television signal production is carried out, further, a video switching platform sends a video baseband signal corresponding to a first PGM (PGM), namely a video PGM signal of a second PGM, to an embedding device after receiving the linkage switching instruction, the audio switching platform obtains switching operation of an audio engineer, sends an audio signal corresponding to the video PGM signal, namely an audio PGM signal of the second PGM, to the embedding device, the video PGM signal and the audio PGM signal are embedded by the embedding device to obtain the second PGM, wherein the signal sources of the first PGM and the second PGM are from the same camera, and the code rate of the first PGM is lower than that of the second PGM.

Based on this, the method for producing a television signal according to an embodiment of the present application, which produces a broadcast-level television signal based on the N second code rate camera signals and the linkage switching instruction, includes:

decoding the N paths of second code rate camera signals through an SRT decoder, outputting a first path of signals to a video switching platform and outputting a second path of signals to a de-embedding device based on a decoding result, wherein the first path of signals comprises N paths of camera video baseband signals corresponding to the N paths of second code rate camera signals, and the second path of signals comprises N paths of camera signals corresponding to the N paths of second code rate camera signals;

the second path of signal is de-embedded through the de-embedding device, and the obtained N paths of audio signals are sent to a sound console for sound tuning;

sending a video PGM signal to an embedding device through a video switching platform based on the N paths of camera baseband signals and the linkage switching instruction; obtaining switching operation of audio PGM aiming at the sound mixing console, and sending an audio PGM signal corresponding to the video PGM signal to the embedding device through the sound mixing console; and embedding the video PGM signal and the audio PGM signal by the embedding device to obtain a second PGM.

Here, the N paths of first code rate camera signals are frame aligned, that is, the N paths of different first code rate camera signals are frame aligned at the same time, and the N paths of second code rate camera signals are also frame aligned, because the transmission speed of the first code rate camera signals is faster than that of the second code rate camera signals, the N paths of first code rate camera signals reach the director switching all-in-one machine earlier, and the N paths of camera baseband signals reach the video switching station later, the linkage switching instruction may have a delay signal, that is, the video switching station delays the preset time to output the video PGM signal after receiving the linkage switching instruction. Through the linkage switching instruction, the linkage switching of the director switching all-in-one machine and the video switching platform can achieve the switching of frame precision, further, the delay time of the delay signal of the linkage switching instruction can be corrected according to the time difference of timestamps carried by the first code rate camera signal and the second code rate camera signal, and the precision of the linkage switching instruction is optimized.

The process of producing a television signal often requires a director to communicate with a photographer to produce a high-quality television signal, and a method for producing a television signal according to another embodiment of the present application further includes:

sending a broadcast guide voice signal to an RTC encoder located in the first system through a call matrix, wherein the broadcast guide voice signal is processed by the RTC encoder of the first system and then sent to the second system through the first switch; and/or the presence of a gas in the gas,

and receiving the voice signal of the camera shooting person sent by the second system through the first switch, and sending the voice signal of the camera shooting person to the call matrix after the voice signal of the camera shooting person is processed by an RTC encoder.

Here, the method for producing a television signal provided in the foregoing embodiment includes three schemes, that is, transmitting the director voice signal to the second system alone, receiving the photographer voice signal transmitted by the second system alone, and transmitting the director voice signal to the second system and receiving the photographer voice signal transmitted by the second system to complete the voice interaction between the director and the photographer.

The voice interaction process of the first system and the second system can be realized in a public cloud-based mode, the director voice signal and the camera voice signal are led into a live broadcast room of the same cloud server, and remote call scheduling between the director and the camera is completed through a public network.

Further, the first system may send a TALLY signal to the second system to control a working state of a TALLY lamp of a Camera in the second system, the director switching all-in-one machine may send a turn-on/turn-off command to a TALLY interface of a Camera Control Unit (CCU) in the second system corresponding to a first low-bit-rate Camera signal switched to a first PGM or a Preview bus (Preview, PVW), specifically, send the TALLY signal and/or a PGM signal to the first switch through the director switching all-in-one machine, and send the TALLY signal to the second system through the first switch to complete a red-green TALLY prompt function of the front-field Camera.

The first system may further send a PGM signal to a second system, and in particular, send the PGM signal to the first switch through the director switch all-in-one, and the PGM signal is sent to the second system through the first switch to control a picture state of a viewfinder of a camera. The sending of the PGM signal may be performed in a public cloud-based manner, for example, the PGM signal is sent to the second system through a video matrix of a cloud server, where the PGM signal refers to a camera signal corresponding to the first PGM.

Based on this, a method for producing a television signal provided in another embodiment of the present application further includes:

and sending a TALLY signal and/or a PGM signal to the first switch through the director switching all-in-one machine, wherein the TALLY signal and/or the PGM signal are sent to the second system through the first switch, the TALLY signal is used for controlling the working state of a TALLY lamp of a camera in the second system, and the PGM signal is used for controlling the picture state of a viewfinder of the camera.

The first system of the present application may further send a camera control signal to the second system to control an operating state of the camera, and specifically send the camera control signal to the second system through the third switch, where the camera control signal includes at least one of: error control signals, interrupt access control signals, acknowledgement control signals, transmission sequence control signals, etc.

the method comprises the following steps that N camera control panels of a first system send N camera control signals to a third switch, the N camera control signals are sent to a second system through the third switch, and the N camera control signals are used for controlling the working states of N cameras in the second system.

Here, because the transmission delay requirement of the camera control command is within 50ms and the camera control panel RCP and the camera CCU need to be in the same lan, the transmission of the camera control signal can be transmitted in a GRE tunnel manner, a GRE tunnel is opened between the first system and the second system, the Ethernet packet is forwarded through the GRE tunnel via a Virtual Ethernet (VE) interface, a two-layer interworking connection across a three-layer network segment is realized between the RCP and the CCU, and the connection manner is set as follows: the BRIDGE completes remote control of error control, interrupt access control, confirmation control, transmission sequence control and the like of the camera CCU by reasonably configuring the RCP of the camera control panel and the IP of the CCU.

Based on this, in the method for manufacturing a television signal according to an embodiment of the present application, the N camera control signals are sent from the third switch to the second system through the GRE tunnel.

Fig. 2 is a schematic view of a second implementation flow of a television signal manufacturing method according to an embodiment of the present application, and as shown in fig. 2, the embodiment of the present application provides a television signal manufacturing method, which is applied to a second system, where the method includes:

step 201: sending N paths of first code rate camera signals to a first system through a first communication mode, and sending N paths of second code rate camera signals to the first system through a second communication mode, wherein the first code rate is lower than the second code rate; the N paths of first code rate camera signals and the N paths of second code rate camera signals have a corresponding relation, the signal sources of the first code rate camera signals and the second code rate camera signals with the corresponding relation are from the same camera, and N is a positive integer.

Here, the first communication method may be a communication method based on a public cloud, the second communication method may be a communication method based on a base station, for example, 5G, and naturally, the first communication method and the second communication method may also transmit signals by using the communication methods, which is not limited in the present application.

Before the sending N channels of first code rate camera signals to a first system through a first communication manner and sending N channels of second code rate camera signals to the first system through a second communication manner, a method for making a television signal provided in another embodiment of the present application further includes:

for each camera in the N cameras, acquiring a camera signal through the camera, and sending the acquired camera signal to the CCU corresponding to the camera, where the camera signal is processed through the CCU corresponding to the camera and then outputs a third path of signal and a fourth path of signal, where the third path of signal is encoded by an RTC encoder corresponding to the camera in the second system to obtain a first code rate camera signal corresponding to the camera, and the fourth path of signal is encoded by an SRT encoder corresponding to the camera to obtain a second code rate camera signal corresponding to the camera.

The same camera signal is processed by adopting an RTC and SRT dual-protocol coding mode to obtain two camera signals with different code rates, wherein the camera signal with the low code rate, namely the camera signal with the first code rate, is obtained after being coded by an RTC coder, and the camera signal with the high code rate, namely the camera signal with the second code rate, is obtained after being coded by an SRT coder. Frame alignment can be achieved through N paths of first code rate camera signals, frame alignment can also be achieved through N paths of second code rate camera signals, time synchronization time service, a byte counting method, a bit filling first bit marking method, an illegal coding method and other methods can be adopted for achieving frame alignment, for example, the time synchronization time service is taken as an example, GPS absolute time is acquired by built-in Global Positioning System (GPS) modules of an RTC encoder and an SRT encoder, absolute time stamp information is respectively embedded into the first code rate camera signals and the second code rate camera signals after encoding, and frame alignment is achieved based on the time stamp information.

In a method for producing a television signal according to another embodiment of the present application, the sending N channels of first code rate camera signals to a first system through a first communication method, and sending N channels of second code rate camera signals to the first system through a second communication method includes:

and sending N paths of first code rate camera signals to the first system by adopting a first communication mode through a fourth switch, and sending N paths of second code rate camera signals to the first system by adopting a second communication mode through a fifth switch.

A method for producing a television signal according to another embodiment of the present application further includes at least one of:

sending N-path camera voice signals to the first system and/or receiving a director voice signal sent by the first system;

receiving a TALLY signal and/or a PGM signal sent by the first system; wherein the TALLY signal is used for controlling the working state of a TALLY lamp of the camera in the second system, and the PGM signal is used for controlling the picture state of a viewfinder of the camera;

receiving a camera control signal sent by the first system; the camera control signal is used for controlling the working state of the camera.

The method comprises three schemes, namely, only sending N-path video camera voice signals to the first system, only receiving the broadcasting guide voice signals sent by the first system, and sending N-path video camera voice signals to the first system and receiving the broadcasting guide voice signals sent by the first system.

And receiving a TALLY signal sent by the first system, namely an on-off instruction of the TALLY lamp, and sending the TALLY signal to the corresponding CCU to complete the red-green TALLY prompt function of the front field camera.

The PGM signals sent by the first system are received and sent to the view finder of each camera for a photographer to observe, and the PGM signals can be received by the second system in a public cloud-based mode, for example, the PGM signals sent by the first system are received by a video matrix of a cloud server.

Specifically, a method for producing a television signal according to another embodiment of the present application, where sending an N-channel camera voice signal to the first system and/or receiving a director voice signal sent by the first system, includes:

for each of the N paths of voice signals of the photographer, sending the voice signal of the photographer to a corresponding RTC encoder through a CCU corresponding to the voice signal of the photographer, and sending the voice signal of the photographer to the first system through the fourth switch after the voice signal of the photographer is encoded by the RTC encoder; and/or the presence of a gas in the gas,

and receiving the broadcasting voice signal through the fourth switch and sending the broadcasting voice signal to all RTC encoders of the second system, wherein the broadcasting voice signal is sent to each CCU through each RTC encoder.

Specifically, in the method for manufacturing a television signal according to another embodiment of the present application, the receiving a TALLY signal and/or a PGM signal transmitted by the first system; wherein the TALLY signal is used for controlling the working state of a TALLY lamp of the camera in the second system, the PGM signal is used for controlling the picture state of a viewfinder of the camera, and the method comprises the following steps:

receiving TALLY signals sent by the first system through the fourth switch and sending the TALLY signals to all RTC encoders of the second system, wherein the TALLY signals are sent to all CCUs through all RTC encoders of the second system so as to control the working state of TALLY lamps of the cameras in the second system; and/or the presence of a gas in the gas,

and receiving a PGM signal sent by the first system through the fourth switch and sending the PGM signal to all RTC encoders of the second system, sending the PGM signal to a video distributor through each RTC encoder of the second system, and sending the PGM signal to each CCU through the video distributor so as to control the picture state of a viewfinder of a camera.

Specifically, in a method for producing a television signal provided in another embodiment of the present application, the camera control signal sent by the first system is received; wherein, camera control signal is used for controlling the operating condition of camera, includes:

and receiving the camera control signal sent by the first system through a sixth switch and sending the camera control signal to a CCU corresponding to the camera control signal so as to control the working state of the camera.

Here, the camera control signal includes at least one of: error control signals, interrupt access control signals, acknowledgement control signals, transmission sequence control signals, etc.

Because the transmission delay requirement of the camera control instruction is within 50ms and the camera control panel RCP and the camera CCU need to be in the same local area network, the transmission of the camera control signal can adopt a GRE tunnel mode for transmission, the GRE tunnel is opened between a first system and a second system, two-layer intercommunication connection of a cross three-layer network segment is realized between the RCP and the CCU, and the connection mode is set as: the BRIDGE completes remote control of error control, interruption access control, confirmation control, transmission sequence control and the like of the CCU of the camera by reasonably configuring the RCP and the IP of the CCU.

According to the method and the device, remote production of the television signals is carried out by adopting the RTC protocol and the SRT protocol, and meanwhile, the problems of poor quality of transmission signals and large transmission delay of the remote signals in the production of the remote signals are solved, so that the real high-quality remote production of the television becomes possible. In addition, the invention enables the television rebroadcasting to overcome the regional limitation factor, and can realize cross-regional unlimited signal transmission for scenes in which a rebroadcasting vehicle and an EFP system cannot be deployed as long as the network signal coverage is provided, thereby bringing more imagination space in new fields for the live broadcast service in the future.

For the past to finish high-quality event rebroadcasting, a whole set of EFP system or a rebroadcasting vehicle system needs to be invested to be deployed to an event site, and for the events of two event sites which are not conflicted in rebroadcasting time arrangement, two sets of EFP systems or rebroadcasting vehicle systems need to be invested, so that a large amount of manpower and material resources are consumed. The technical scheme that this application provided only needs at the scene of the event deployment camera system and RTC encoder, the SRT encoder, the signal preparation to two venues just can be realized to one set of switching manufacturing system of long-range preparation center deployment in back court, a large amount of manpower and materials have been saved, has fine economic value, in addition, this application adopts the mode of timestamp to carry out frame alignment and frame synchronization, carry out the time delay compensation correction simultaneously, can avoid leading a series of problems such as cutting process incoherence, black court to appear completely.

In order to understand the technical scheme of the present application more clearly, the technical scheme of the present application is further described below by combining with application example 1.

Referring to fig. 3 to fig. 7, fig. 3 is a schematic overall flow chart of a television signal manufacturing method provided in application example 1 of the present application. The back field remote production center corresponds to a first system in the application, and the front field event venue corresponds to a second system in the application.

Fig. 4 is a schematic diagram of a camera signal transmission flow in application example 1 of the present application. As shown in fig. 4, a plurality of cameras, for example, N cameras, are configured at an event site, each camera corresponds to one input channel of one RTC encoder and one SRT encoder, signals shot by the cameras are transmitted from a camera optical cable to the CCU for distribution and output, one path of the signals distributed by the CCU is transmitted to the RTC encoder, the RTC encoder encodes 800Kbps low-bit-rate signals and uploads the low-bit-rate signals to the public cloud via the public network, and the low-bit-rate signals are transmitted to the melt media director switching all-in-one machine of the back farm remote manufacturing center via the public cloud; meanwhile, one path of the signals distributed by the CCU is sent to the SRT encoder, and the SRT encoder encodes 10Mbps high-bit-rate signals and transmits the signals to an SRT decoder located in a back field remote manufacturing center through a high-bandwidth network.

Fig. 5 is a schematic diagram of a PGM linkage switching process in application example 1 of the present application, and as shown in fig. 5, a fused media director switching all-in-one machine located in a back-end remote production center receives a low-bit-rate camera signal from a public cloud, the signal is shot by a camera and received by the fused media director switching all-in-one machine, an end-to-end delay is about 0.6 second, and each RTC protocol transmission signal can achieve frame alignment. The video switching station located in the remote back-end production center receives the camera baseband signal decoded by the SRT decoder, the end-to-end delay is about 3 seconds, and all the SRT protocol transmission signals can also achieve frame alignment. The relative delay difference between the low-code-rate signal received by the integrated convergence media switching machine and the high-code-rate signal received by the video switching station is about 2.4 seconds. And setting the control instruction delay of the integrated convergence media switching machine to be 2.4 seconds, and then using the delayed control instruction of the integrated convergence media switching machine to control the video switching platform to perform linkage delay switching.

In the application example 1, the frame alignment takes time synchronization time service as an example, the RTC encoder and the SRT encoder have built-in GPS modules to acquire GPS absolute time, and respectively embed absolute timestamp information into a high code stream and a low code stream after encoding, the low code stream with a timestamp enters the media-melting switching all-in-one machine to perform frame alignment, and the high code stream with the timestamp enters the SRT decoder to perform frame alignment.

Fig. 6 is a schematic diagram of a flow of implementing remote call, remote TALLY, and remote PGM return in application example 1 of the present application, as shown in fig. 6, in terms of a remote call signal, a call signal of a camera on the event site is connected to a four-line interface of a CCU through a camera optical cable, the four-line interface of the CCU is converted into a USB interface to access an RTC encoder, in a back-end remote production center, a call instruction of a director enters a call matrix from a call panel, the four-line interface of the call matrix is converted into a USB interface to access an RTC encoder of the back-end remote production center through cable conversion, the RTC encoders of the front end and the back end both enter a live broadcast room of the same cloud server, and remote call scheduling between the director and a photographer is completed through a public network; in the aspect of remote TALLY, the integrated media-integrating, broadcasting and switching machine switches by pulling a low-code-rate video signal of a front field RTC encoder, the RTC encoder switched to PGM or PVW generates an on-off command, and the RTC encoder switches the on-off command to a TALLY interface of a CCU through an on-off box to complete a red-green TALLY prompt function of a front field camera; in the aspect of remote PGM return, the integrated fused media director and switcher has a video connection function matched with the RTC encoder, and by utilizing the function, the integrated fused media director and switcher and the RTC encoder enter the same video connection room, so that PGM signals of the integrated fused media director and switcher can be accessed to a cloud server video matrix of the video connection room, a video connection control end distributes the PGM signals to the RTC encoder at the front field camera end through the video matrix of the cloud server, and the RTC encoder outputs video baseband signals to return input interfaces of a plurality of CCUs to complete remote PGM signal transmission.

Fig. 7 is a schematic flow chart of implementation of control signal transmission in application example 1 of the present application, as shown in fig. 7, in the aspect of remote control from a camera RCP to a camera CCU, since a camera control instruction transmission delay requirement is within 50ms and the camera RCP and the camera CCU need to get through a GRE network tunnel from a back-end remote manufacturing center to a competition venue in the same local area network, an Ethernet packet is forwarded through the GRE tunnel through a VE interface, and two-layer interworking connection across three-layer network segments is implemented between the RCP and the CCU, where the connection mode is set as follows: the BRIDGE completes the remote control of the camera RCP on the error control, the interrupt access control, the confirmation control, the transmission sequence control and the like of the camera CCU by reasonably configuring the IP of the RCP and the CCU.

The embodiment of the present application further provides a television signal producing system 800; fig. 8 is a schematic structural diagram of a television signal manufacturing system 800 according to an embodiment of the present application, and as shown in fig. 8, the television signal manufacturing system 800 according to the embodiment of the present application includes:

a first system 801 and a second system 802; wherein the content of the first and second substances,

the second system 802, comprising:

a second sending module 8021, configured to send, to a first system in a first communication manner, N first code rate camera signals encoded by N RTC encoders, and send, to the first system in a second communication manner, N second code rate camera signals encoded by N SRT encoders, where the first code rate is lower than the second code rate;

the first system 801 comprises:

a first receiving module 8011, configured to receive, in a first communication manner, N channels of first code rate camera signals sent by a second system, and receive, in a second communication manner, N channels of second code rate camera signals sent by the second system;

a making module 8012, configured to make broadcast-level television signals based on the N channels of first code rate camera signals and the N channels of second code rate camera signals;

In other embodiments of the present application, the making module 8012 is specifically configured to obtain, based on the N channels of first code rate camera signals, a switching operation for a first PGM of a director switching all-in-one machine, and send a linkage switching instruction to a video switching station through the director switching all-in-one machine; and manufacturing broadcast-grade television signals based on the N paths of second code rate camera signals and the linkage switching instruction. .

In other embodiments of the present application, the first receiving module 8011: the first switch is specifically used for receiving N paths of first code rate camera signals sent by the second system; and sending the N paths of first code rate camera signals to the body director switching all-in-one machine.

In other embodiments of the present application, the first receiving module 8011: the second switch is specifically used for receiving N paths of second code rate camera signals sent by the second system; and sending the N paths of second code rate camera signals to an SRT decoder.

In other embodiments of the present application, the making module 8012 is specifically configured to decode the N second code rate camera signals through an SRT decoder, output a first path of signals to a video switching station and output a second path of signals to a de-embedder based on a decoding result, where the first path of signals includes N camera video baseband signals corresponding to the N second code rate camera signals, and the second path of signals includes N camera signals corresponding to the N second code rate camera signals; the second path of signals are de-embedded through the de-embedding device, and the obtained N paths of audio signals are sent to a sound console for sound tuning; sending a video PGM signal to an embedding device through a video switching platform based on the N paths of camera baseband signals and the linkage switching instruction; obtaining switching operation of audio PGM aiming at the sound mixing console, and sending an audio PGM signal corresponding to the video PGM signal to the embedding device through the sound mixing console; and embedding the video PGM signal and the audio PGM signal by the embedding device to obtain a second PGM.

In other embodiments of the present application, the first system 801 further comprises: the first sending module 8013 is configured to send a broadcast directing voice signal to the RTC encoder of the first system through the call matrix, where the broadcast directing voice signal is processed by the RTC encoder of the first system and then sent to the second system through the first switch.

In other embodiments of the present application, the first receiving module 8011: the first switch is used for receiving a camera operator voice signal sent by the second system, and the camera operator voice signal is sent to the call matrix after being processed by the RTC encoder.

In other embodiments of the present application, the first transmitting module 8013: and the broadcasting switching all-in-one machine is further used for sending a TALLY signal and/or a PGM signal to the first switch, and the TALLY signal and/or the PGM signal are sent to the second system through the first switch, wherein the TALLY signal is used for controlling the working state of a TALLY lamp of a camera in the second system, and the PGM signal is used for controlling the picture state of a viewfinder of the camera.

In other embodiments of the present application, the first transmitting module 8013: the system comprises a first system, a second system and a third switch, and is characterized by further comprising N camera control panels and N camera control signals, wherein the N camera control panels of the first system send the N camera control signals to the third switch, the N camera control signals are sent to the second system through the third switch, and the N camera control signals are used for controlling the working states of N cameras in the second system.

In other embodiments of the present application, the N camera control signals are sent by the third switch to the second system via a GRE tunnel.

In other embodiments of the present application, the first communication method is a communication method based on a public cloud, and the second communication method is a communication method based on a base station.

In other embodiments of the present application, the second system 802 further comprises a processing module 8022, wherein the processing module 8022: the device comprises a camera control unit CCU, a first code rate camera signal acquisition unit, a second code rate camera signal acquisition unit, a third code rate camera signal acquisition unit, a fourth code rate camera signal acquisition unit and a fourth code rate camera signal acquisition unit, wherein the first code rate camera signal acquisition unit is used for acquiring a camera signal through the camera for each of N cameras and transmitting the acquired camera signal to the camera control unit CCU corresponding to the camera, the camera signal is processed through the CCU corresponding to the camera and then outputs a third signal and a fourth signal, the third signal is encoded through an RTC encoder corresponding to the camera in the second system to obtain the first code rate camera signal corresponding to the camera, and the fourth signal is encoded through an SRT encoder corresponding to the camera to obtain the second code rate camera signal corresponding to the camera.

In other embodiments of the present application, the second sending module 8021: the first communication method is specifically used for sending N paths of first code rate camera signals to the first system through the fourth switch in the first communication mode, and sending N paths of second code rate camera signals to the first system through the fifth switch in the second communication mode.

In other embodiments of the present application, the second sending module 8021: and the system is also used for sending N-path camera voice signals to the first system.

In other embodiments of the present application, the second system 802 further comprises a second receiving module 8023, wherein the second receiving module 8023: for receiving a direct broadcast voice signal transmitted by the first system.

In other embodiments of the present application, the second receiving module 8023: receiving TALLY and/or PGM signals sent by the first system; wherein the TALLY signal is used for controlling the working state of a TALLY lamp of the camera in the second system, and the PGM signal is used for controlling the picture state of a viewfinder of the camera.

In other embodiments of the present application, the second receiving module 8023: receiving a camera control signal sent by the first system; the camera control signal is used for controlling the working state of the camera.

In other embodiments of the present application, the second sending module 8021: the voice control system is specifically used for sending the voice signals of the image pickup person to the corresponding RTC encoder through the CCU corresponding to the voice signals of the image pickup person for each voice signal of the N paths of image pickup persons, and the voice signals of the image pickup person are coded by the RTC encoder and then sent to the first system through the fourth switch.

In other embodiments of the present application, the second receiving module 8023: the fourth switch is specifically configured to receive a TALLY signal sent by the first system and send the TALLY signal to all RTC encoders of the second system, where the TALLY signal is sent to each CCU through each RTC encoder of the second system, so as to control a working state of a TALLY lamp of a camera in the second system.

In other embodiments of the present application, the second receiving module 8023: the fourth switch is specifically configured to receive a PGM signal sent by the first system and send the PGM signal to all RTC encoders of the second system, the PGM signal is sent to a video distributor through each RTC encoder of the second system, and the PGM signal is sent to each CCU through the video distributor to control a picture state of a finder of a camera.

In other embodiments of the present application, the second receiving module 8023: the sixth switch is specifically configured to receive the camera control signal sent by the first system and send the camera control signal to the CCU corresponding to the camera control signal, so as to control the operating state of the camera.

In other embodiments of the present application, the second receiving module 8023: the fourth switch is specifically configured to receive the director voice signal and send the director voice signal to all RTC encoders of the second system, where the director voice signal is sent to each CCU through each RTC encoder.

Those skilled in the art will appreciate that the functions performed by the various elements of the television signal production system illustrated in fig. 10 may be understood by reference to the associated description of the foregoing methods. The functions of the units in the television signal producing system shown in fig. 10 may be implemented by a program running on a processor, or may be implemented by specific logic circuits.

Fig. 9 is a schematic structural diagram of an electronic device 900 according to an embodiment of the present application. The electronic device 900 shown in fig. 9 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 9, the electronic device 900 may also include a memory 920. From the memory 920, the processor 910 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 920 may be a separate device from the processor 910, or may be integrated in the processor 910.

Optionally, as shown in fig. 9, the electronic device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, and in particular, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 930 may include a transmitter and a receiver, among others. The transceiver 930 may further include one or more antennas.

The electronic device 900 may specifically be the television signal manufacturing system according to the embodiment of the present application, and the electronic device 900 may implement the corresponding process implemented by the television signal manufacturing system in each method according to the embodiment of the present application, and for brevity, no further description is given here.

Fig. 10 is a schematic structural diagram of a chip of the embodiment of the present application. The chip 1000 shown in fig. 10 includes a processor 1010, and the processor 1010 may call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 10, the chip 1000 may further include a memory 1020. From the memory 1020, the processor 1010 may call and execute a computer program to implement the method in the embodiment of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

Optionally, the chip 1000 may further include an input interface 1030. The processor 1010 may control the input interface 1030 to communicate with other devices or chips, and specifically may obtain information or data transmitted by the other devices or chips.

Optionally, the chip 1000 may further include an output interface 1040. The processor 1010 may control the output interface 1040 to communicate with other devices or chips, and may particularly output information or data to the other devices or chips.

The chip may be applied to the television signal manufacturing system in the embodiment of the present application, and the chip may implement a corresponding process implemented by the television signal manufacturing system in each method in the embodiment of the present application, and for brevity, details are not described here again.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program. The computer-readable storage medium can be applied to the television signal production system in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the television signal production system in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions. The computer program product can be applied to the television signal production system in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the television signal production system in the methods of the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program. The computer program can be applied to the television signal production system in the embodiment of the present application, and when the computer program runs on a computer, the computer executes a corresponding process implemented by the television signal production system in each method in the embodiment of the present application, and for brevity, details are not described here again.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of producing a television signal for use in a first system, the method comprising:

2. The method of claim 1, wherein said generating a broadcast-level television signal based on said N first code rate camera signals and N second code rate camera signals comprises:

3. The method for generating a television signal according to claim 2, wherein the receiving N first rate camera signals transmitted by the second system comprises:

4. The method of claim 3, wherein said receiving the N second code rate camera signals transmitted by the second system comprises:

5. The method of claim 4, wherein said generating a broadcast-level television signal based on said N second code rate camera signals and said coordinated switching command comprises:

sending a video PGM signal to an embedding device through a video switching platform based on the N paths of camera baseband signals and the linkage switching instruction; obtaining a switching operation of audio PGM aiming at the sound mixing console, and sending an audio PGM signal corresponding to the video PGM signal to the embedder through the sound mixing console; and embedding the video PGM signal and the audio PGM signal by the embedding device to obtain a second PGM.

6. The method of claim 5, further comprising:

and receiving the voice signal of the camera shooting person sent by the second system through the first switch, and sending the voice signal of the camera shooting person to the call matrix after the voice signal of the camera shooting person is processed by the RTC encoder.

7. The method of claim 6, further comprising:

8. The method of claim 7, further comprising:

9. The method of claim 8, wherein the step of generating the television signal comprises generating the television signal,

the N camera control signals are sent by the third switch to the second system via a GRE tunnel.

10. A method of producing a television signal as claimed in any one of claims 1 to 9,

the first communication mode is a communication mode based on public cloud, and the second communication mode is a communication mode based on a base station.

11. A method for producing a television signal, for use in a second system, comprising:

12. The method of claim 11, wherein before sending N first rate camera signals to the first system via the first communication means and N second rate camera signals to the first system via the second communication means, the method further comprises:

for each camera in the N cameras, acquiring a camera signal through the camera, and sending the acquired camera signal to a camera control unit CCU corresponding to the camera, where the camera signal is processed by the CCU corresponding to the camera and then outputs a third path of signal and a fourth path of signal, where the third path of signal is encoded by an RTC encoder corresponding to the camera in the second system to obtain a first code rate camera signal corresponding to the camera, and the fourth path of signal is encoded by an SRT encoder corresponding to the camera to obtain a second code rate camera signal corresponding to the camera.

13. The method of claim 11, wherein said transmitting N first code rate camera signals to a first system via a first communication means and N second code rate camera signals to the first system via a second communication means comprises:

14. A method of producing a television signal as claimed in any of claims 11 to 13 further comprising at least one of:

15. The method for generating a television signal according to claim 14, wherein the transmitting an N-channel camera voice signal to the first system and/or receiving a director voice signal transmitted by the first system includes:

for each of the N camera operator voice signals, sending the camera operator voice signal to a corresponding RTC encoder through a CCU corresponding to the camera operator voice signal, and sending the camera operator voice signal to the first system through the fourth switch after the camera operator voice signal is encoded by the RTC encoder; and/or the presence of a gas in the gas,

16. The method of claim 14, wherein said receiving a tale ly signal and/or PGM signal transmitted by said first system; wherein the TALLY signal is used for controlling the working state of a TALLY lamp of the camera in the second system, the PGM signal is used for controlling the picture state of a viewfinder of the camera, and the method comprises the following steps:

17. The method of claim 14, wherein said receiving a camera control signal transmitted by said first system; wherein, camera control signal is used for controlling the operating condition of camera, includes:

18. A system for producing television signals, comprising a first system and a second system; wherein the content of the first and second substances,

the second system, comprising:

the first system, comprising:

19. An electronic device, comprising: a processor and a memory for storing a computer program, said processor being adapted to call up and run the computer program stored in said memory to perform the method of making a television signal as claimed in any one of claims 1 to 17.

20. A chip, comprising: a processor for calling and running a computer program from a memory so that a device in which the chip is installed performs the method of making a television signal as claimed in any one of claims 1 to 17.

21. A computer-readable storage medium for storing a computer program for causing a computer to perform the method of making a television signal as claimed in any one of claims 1 to 17.