JP7167466B2 - VIDEO TRANSMISSION PROCESSING DEVICE, METHOD, PROGRAM AND RECORDING MEDIUM - Google Patents

Description

The present invention relates to a video transmission processing device, method, program, and recording medium.

In a general portable and mobile video transmission system, large-scale preparation of equipment such as a camera system, a portable transmitter, or a relay vehicle for video transmission is essential. Therefore, even when it is necessary to rush to the site for an emergency response or the like, it is necessary to make appropriate advance preparations, and there is the problem that it takes time to start and deploy the system even after arriving at the site.

On the other hand, IP (Internet Protocol) networking of systems used in broadcasting stations is being promoted, and video data posted to video sharing services can be used as video material for broadcasting. By using such video data, an environment is being prepared in which video can be provided to viewers and the like without using the portable/mobile video transmission system described above. For this reason, broadcasting stations have technical guarantees for real-time broadcasting of video materials distributed in real-time from terminal devices via public lines.

For example, Patent Literature 1 discloses a system for distributing information input and transmitted from a wireless communication terminal and/or a wired communication terminal at least in real time on a television.

Further, Patent Document 2 discloses converting a camera image received via a wireless communication network into a signal for digital terrestrial television broadcasting.

Japanese Patent Application Laid-Open No. 2002-026842 Japanese Unexamined Patent Application Publication No. 2013-111402

However, the transmission of video signals via public lines is not as efficient as the portable and mobile video transmission systems described above, because the transmission quality of the video signals fluctuates, resulting in significant deterioration of images and interruptions in video display. There was a problem with reliability.

SUMMARY OF THE INVENTION An object of the present invention is to provide a video transmission processing apparatus, method, program, and recording medium that enable transmission of a video signal received via a public line to a broadcast wave with high reliability.

A video transmission processing device according to the present invention includes a communication processing unit that receives a video signal and terminal location information from each of a plurality of terminal devices via a public line; a determination unit that determines whether there are two or more terminal devices whose terminal positions are within a predetermined range, and two or more terminal devices received from each of the two or more terminal devices based on the determination result and a converter that converts one or more video signals out of the video signals into a video signal format used for broadcast wave signals and outputs the converted video signals.

The method of the present invention includes receiving a video signal and terminal location information from each of a plurality of terminal devices via a public line, and determining, based on the terminal location information, one of the plurality of terminal devices. Determining whether there are two or more terminal devices whose positions are within a predetermined range; Converting the above video signal into a video signal format used for broadcast wave signals and outputting it;
including.

A program of the present invention receives a video signal and terminal location information from each of a plurality of terminal devices via a public line, Determining whether there are two or more terminal devices whose positions are within a predetermined range; It is a program for causing a processor to convert the video signal described above into a video signal format used for a broadcast wave signal and output the video signal.

The recording medium of the present invention receives a video signal and terminal location information from each of a plurality of terminal devices via a public line, and based on the terminal location information, among the plurality of terminal devices, Determining whether there are two or more terminal devices whose terminal positions are within a predetermined range, and based on the result of the determination, among the two or more video signals received from each of the two or more terminal devices, It is a computer-readable non-transitory recording medium recording a program for causing a processor to convert one or more video signals into a video signal format used for broadcast wave signals and output the video signals.

According to the present invention, it is possible to transmit a video signal received via a public line as a broadcast wave with high reliability. It should be noted that other effects may be achieved by the present invention instead of or in addition to the above effects.

FIG. 1 is an explanatory diagram showing an example of a schematic configuration of a system 1 according to an embodiment of the invention. FIG. 2 is a block diagram showing an example of a schematic configuration of the video transmission processing device 100 according to the first embodiment. FIG. 3 is a diagram for explaining the flow of authentication processing performed in the example of the first embodiment. FIG. 4 is a diagram for explaining the flow of transmission processing for a plurality of video signals transmitted from each of the plurality of terminal devices 200. As shown in FIG. FIG. 5 is a diagram showing an example of a screen used when a video editor checks video on the broadcasting station (video transmission processing device 100) side. FIG. 6 is a block diagram showing an example of a schematic configuration of the video transmission processing device 100 according to the second embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in the present specification and drawings, elements that can be described in the same manner can be omitted from redundant description by assigning the same reference numerals.

The description is given in the following order.
1. Overview of Embodiments of the Invention 2 . System configuration 3 . First Embodiment 3.1. Configuration of video transmission processing device 100 3.2. Technical features 3.3. Example 3.4. Effect 4. Second Embodiment 4.1. Configuration of video transmission processing device 100 4.2. Technical features5. other forms

<<1. Overview of Embodiments of the Present Invention>>
First, an outline of an embodiment of the present invention will be described.

(1) Technical Issues In general portable and mobile video transmission systems, large-scale preparation of equipment such as camera systems, portable transmitters, relay vehicles, etc. for video transmission is essential. Therefore, even when it is necessary to rush to the site for an emergency response or the like, it is necessary to make appropriate advance preparations, and there is the problem that it takes time to start and deploy the system even after arriving at the site.

On the other hand, IP (Internet Protocol) networking of systems used in broadcasting stations is being promoted, and video data posted to video sharing services can be used as video material for broadcasting. By using such video data, an environment is being prepared in which video can be provided to viewers and the like without using the portable/mobile video transmission system described above. For this reason, broadcasting stations have technical guarantees for real-time broadcasting of video materials distributed in real-time from terminal devices via public lines.

However, the transmission of video signals via public lines suffers from fluctuations in the transmission quality of video signals, resulting in significant deterioration of images and interruptions in video display. There was a problem with reliability.

An object of the present embodiment is to provide a video transmission processing apparatus that enables a video signal received via a public line to be transmitted to broadcast waves with high reliability.

(2) Technical features In the embodiments of the present invention, for example, a video transmission processing device receives video signals and terminal location information from each of a plurality of terminal devices via a public line, and receives the terminal location information. Based on, it is determined whether there are two or more terminal devices whose terminal positions are within a predetermined range among the plurality of terminal devices, and based on the result of the determination, from each of the two or more terminal devices Of the two or more received video signals, one or more video signals are converted into a video signal format used for broadcast wave signals and output.

As a result, for example, a video signal received via a public line can be transmitted to broadcast waves with high reliability. The technical features described above are specific examples of the embodiments of the present invention, and the embodiments of the present invention are not limited to the technical features described above.

<<2. System configuration >>
An example of the configuration of a system 1 according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is an explanatory diagram showing an example of a schematic configuration of a system 1 according to an embodiment of the invention. Referring to FIG. 1, system 1 includes a video transmission processing device 100 and a plurality of terminal devices 200 .

In the system 1, for example, a video signal captured by the terminal device 200 is transmitted to the video transmission processing device 100 via the public line 10, and further transmitted as a broadcast wave from the video transmission processing device 100 via the broadcasting antenna 20. be done.

The video transmission processing device 100 is, for example, a device implemented in one or more server computers provided as broadcasting equipment in a broadcasting station. Also, the terminal device 200 is, for example, a mobile terminal (for example, a smart phone, etc.) having an imaging function capable of capturing moving images. Furthermore, the public line 10 (network network) from the terminal device 200 to the video transmission processing device 100 (broadcasting station) is, for example, an existing network network (hereinafter referred to as a public line) provided by a communication carrier.

<<3. First Embodiment>>
Next, a first embodiment of the present invention will be described with reference to FIGS. 2 to 5. FIG.

<3.1. Configuration of video transmission processing device 100>
Next, an example configuration of the video transmission processing apparatus 100 according to the first embodiment will be described with reference to FIG. FIG. 2 is a block diagram showing an example of a schematic configuration of the video transmission processing device 100 according to the first embodiment. Referring to FIG. 2, the video transmission processing apparatus 100 includes a network communication section 110, a broadcast wave transmission section 120, a storage section 130, and a processing section 140. FIG.

(1) Network communication unit 110
The network communication unit 110 receives signals from a network (for example, the public line 10) and transmits signals from the network (for example, the public line 10). For example, the network communication unit 110 receives signals from the terminal device 200 and transmits signals to the terminal device 200 .

(2) Broadcast wave sending unit 120
Broadcast wave transmitting unit 120 transmits a broadcast wave including a video signal via broadcast antenna 20 by applying predetermined modulation processing or the like to the video signal.

(3) Storage unit 130
The storage unit 130 temporarily or permanently stores programs (instructions) and parameters for the operation of the video transmission processing device 100 and various data. The program includes one or more instructions for operation of the video transmission processing device 100 .

(4) Processing unit 140
The processing unit 140 provides various functions of the video transmission processing device 100 . The processing unit 140 includes a communication processing unit 141 , a determination unit 143 and a conversion unit 145 . Note that the processing unit 140 may further include components other than these components. That is, the processing unit 140 can perform operations other than those of these components. Specific operations of the communication processing unit 141, the determination unit 143, and the conversion unit 145 will be described in detail later. For example, the processing unit 140 (communication processing unit 141 ) communicates with the terminal device 200 via the network communication unit 110 .

(5) Implementation Example The network communication unit 110 may be implemented by a network adapter and/or a network interface card or the like. The broadcast wave transmitter 120 may be implemented by a radio frequency (RF) circuit or the like. The storage unit 130 may be implemented by memory (eg, non-volatile memory and/or volatile memory) and/or hard disk or the like. Processing unit 140 may be implemented by one or more processors, such as a Baseband (BB) processor and/or other types of processors. The communication processing unit 141, the determination unit 143, and the conversion unit 145 may be implemented by the same processor, or may be separately implemented by different processors. The memory (storage unit 130) may be included within the one or more processors or may be external to the one or more processors.

The video transmission processing device 100 may include a memory that stores a program (instruction) and one or more processors that can execute the program (instruction). The one or more processors may execute the program to perform the operations of the processing unit 140 (the operations of the communication processing unit 141, the determination unit 143, and/or the conversion unit 145). The program may be a program for causing the processor to execute the operation of the processing unit 140 (the operation of the communication processing unit 141, the determination unit 143, and/or the conversion unit 145).

<3.2. Technical features>
Next, technical features of the first embodiment will be described.

The video transmission processing device 100 (communication processing unit 141) receives video signals and terminal location information via the public line 10 from each of a plurality of terminal devices (for example, the terminal device 200). Then, based on the terminal position information, the video transmission processing device 100 (determining unit 143) selects two or more terminal devices whose terminal positions are within a predetermined range among the plurality of terminal devices (for example, the terminal device 200). (for example, the terminal device 200). Based on the determination result, the video transmission processing device 100 (the conversion unit 145) converts one or more of the two or more video signals received from each of the two or more terminal devices (for example, the terminal device 200) into The video signal is converted into a video signal format used for broadcast wave signals and output to the broadcast wave transmission unit 120, for example.

(1) Terminal Location Information For example, the terminal location information is information (latitude information and longitude information) about the current location that the terminal device 200 can acquire by a location information acquisition function based on GPS, for example. In addition, the case where there are two or more terminal devices (for example, terminal devices 200) whose terminal positions are within a predetermined range specifically means that two or more terminal devices 200 are present at almost the same position. Say.

(2) Video signal conversion Based on the result of the determination, the video transmission processing device 100 (the conversion unit 145) receives two video signals from each of the two or more terminal devices whose terminal positions are within the predetermined range. Among the above video signals, for example, one video signal having the highest video quality is converted into a video signal format used for broadcast wave signals and output.

Further, based on the result of the determination, the video transmission processing device 100 (the conversion unit 145) converts two or more of the video signals received from the two or more terminal devices whose terminal positions are within the predetermined range. may be converted into a signal format used for the broadcast wave signal and output. That is, for example, two or more video signals captured at the same position may be included in the broadcast wave signal.

- Signal Format The video signal received from each of the two or more terminal devices (for example, the terminal device 200) via the public line 10 is, for example, an IP (Internet Protocol) signal. A video signal format used for the broadcast wave signal is, for example, a video signal format conforming to the SDI (Serial Digital Interface) standard.

(3) Security Concerning Security For example, the video transmission processing device 100 (determination unit 143) may further determine whether each of the two or more terminal devices is a predetermined registered terminal device. In this case, if each of the two or more terminal devices is the predetermined registered terminal device, the video transmission processing device 100 (the conversion unit 145) receives the two or more terminal devices from each of the two or more terminal devices. One or more video signals among the above video signals are converted into a video signal format used for broadcast wave signals and output.

<3.3. Example>
Next, examples according to the first embodiment will be described.

FIG. 3 is a diagram for explaining the flow of authentication processing performed in the example of the first embodiment. For example, the DB server 310 (DATABASE) server, the authentication server 320, the AP server 330 (Application) server, and the RT communication server 340 are each connected to the intra-station communication network 300 provided in the broadcasting station, and each performs the video transmission processing described above. It is responsible for various functions of the device 100 . Further, the operation of each server described above is controlled by an operator 350, for example.

First, since the terminal device 200 uses a dedicated application program when establishing communication with the broadcasting station (video transmission processing device 100), user registration and terminal registration are performed in advance. Here, registration data is managed by the DB server 310 serving as one function of the determination unit 143 . Further, the authentication processing performed when the dedicated application program is activated is performed by the authentication server 320 that plays a role of one function of the determination unit 143 .

Subsequently, after communication is established between the broadcasting station (video transmission processing device 100) and the terminal device 200, the AP server 330 serving as one function of the communication processing unit 141 and the application executed by the terminal device 200 A setting process related to the necessary information is performed with the program. Also, video transmission from the terminal device 200 to the video transmission processing device 100 is performed by the RT communication server 340 that plays a role of one function of the communication processing unit 141 .

FIG. 4 is a diagram for explaining the flow of transmission processing for a plurality of video signals transmitted from each of the plurality of terminal devices 200. As shown in FIG. In the example shown in FIG. 4, for example, two terminal devices 200 carried by the same user transmit video signals to the broadcasting station (video transmission processing device 100) via the public line 10 through a total of two systems. Examples are shown. More specifically, in FIG. 4, terminal devices 200A and 200B transmit video signals captured by the same user through two systems. The terminal devices 200C and 200D also transmit video signals captured by the same user through two systems. The terminal devices 200E and 200F also transmit video signals captured by the same user through two systems.

In addition, the terminal device 200 can transmit terminal location information as described above. Therefore, the video transmission processing device 100 can transmit a broadcast wave including a plurality of video signals obtained by imaging one imaging target (subject) 400 as shown in FIG. Become. Further, as shown in FIG. 4, the broadcast wave may include terminal position information of each terminal device 200A-200F.

For example, FIG. 5 is a diagram showing an example of a screen used when a video editor checks video on the broadcasting station (video transmission processing device 100) side. As shown in FIG. 5, when the video editor checks the video on the broadcasting station (video transmission processing device 100) side, the captured image at each site (each terminal device 200A-F), its position information and It is possible to check the angle of view information centrally on the same screen. In particular, by increasing the number of shooting points, such as taking aerial shots from the sky with a drone, etc., it is possible to synthesize each image in 3D and expand the range of image utilization.

In addition, the video transmission processing device 100 makes it possible to build a mobile studio system that can be deployed at any location instead of a sub-studio within the broadcasting station by unifying the interface with the existing transmission system of the broadcasting station. , Only facilities that can use public lines are available at the site, and camera switching etc. can be performed from within the broadcasting station.

<3.4. Effect>
According to this embodiment, by using a public line, it is possible to achieve quick response in an emergency, shorten the deployment time at the site, and reduce the corresponding human resources. That is, in a system in which both a TV broadcasting station transmission system and a portable/mobile video transmission system are mixed, it is possible to transmit video and audio using a public line such as a carrier line. It is possible to construct a real-time transmission system from

In addition, according to this embodiment, by sharing an interface with existing subsystems, it is possible to use it as a mobile subsystem, and remote operations such as switching camera viewpoints from the broadcasting station side are possible. Become.

Furthermore, according to the present embodiment, communication is performed between the application program (terminal device) and the server. It is also possible to switch between

Further, according to the present embodiment, for example, transmission from underground, which is difficult to enter, and utilization using drones are conceivable. In addition, by using a common protocol called IP (Internet Protocol), it is possible to distribute directly overseas.

<<4. Second Embodiment>>
Next, a second embodiment of the present invention will be described with reference to FIG. While the first embodiment described above is a specific embodiment, the second embodiment is a more generalized embodiment.

<4.1. Configuration of video transmission processing device 100>
First, with reference to FIG. 6, an example configuration of a video transmission processing apparatus 100 according to the second embodiment will be described. FIG. 6 is a block diagram showing an example of a schematic configuration of the video transmission processing device 100 according to the second embodiment. Referring to FIG. 6 , the video transmission processing device 100 includes a communication processing section 151 , a determination section 153 and a conversion section 155 . Specific operations of the communication processing unit 151, the determination unit 153, and the conversion unit 155 will be described later.

The communication processing unit 151, the determination unit 153, and the conversion unit 155 may be implemented by the same processor, or may be separately implemented by different processors. The communication processing unit 151, the determination unit 153, and the conversion unit 155 may include a memory that stores a program (instruction) and one or more processors capable of executing the program (instruction). The processor may operate the communication processing unit 151 , the determination unit 153 , and the conversion unit 155 . The program may be a program for causing the processor to execute the operations of the communication processing unit 151 , the determination unit 153 , and the conversion unit 155 .

<4.2. Technical features>
Next, technical features of the second embodiment will be described.

In the second embodiment, the video transmission processing device 100 (communication processing unit 151) receives video signals and terminal location information from each of a plurality of terminal devices via public lines. Then, the video transmission processing device 100 (determining unit 153) determines whether there are two or more terminal devices whose terminal positions are within a predetermined range among the plurality of terminal devices, based on the terminal position information. . Based on the determination result, the video transmission processing device 100 (the conversion unit 155) converts one or more of the two or more video signals received from each of the two or more terminal devices into a broadcast wave signal. converted to the video signal format used for video output.

For example, the communication processing unit 151 may operate the communication processing unit 141 according to the first embodiment described above. Further, the determination unit 153 may perform the operation of the determination unit 143 according to the first embodiment described above. Furthermore, the conversion unit 155 may perform the operation of the conversion unit 145 according to the first embodiment described above.

The second embodiment has been described above. According to the second embodiment, for example, a video signal received via a public line can be transmitted to broadcast waves with high reliability.

<<5. Other forms>>
Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Those skilled in the art will appreciate that these embodiments are illustrative only and that various modifications can be made without departing from the scope and spirit of the invention.

For example, the steps in the processes described herein do not necessarily have to be executed in chronological order according to the order described in the sequence diagrams. For example, the steps in the process may be performed in an order different from that depicted in the sequence diagrams, or may be performed in parallel. Also, some of the steps in the process may be deleted and additional steps may be added to the process.

In addition, a device (for example, a plurality of devices (or units) constituting a base station) that includes the components of the video transmission processing device described in this specification (for example, a communication processing unit, a determination unit, and/or a conversion unit) one or more devices (or units) of or a module for one of said plurality of devices (or units)) may be provided. A method may also be provided that includes the processing of the above components, and a program may be provided for causing a processor to execute the processing of the above components. Also, a non-transitory computer readable medium recording the program may be provided. Of course, such devices, modules, methods, programs, and computer-readable non-transitory recording media are also included in the present invention.

Some or all of the above embodiments may also be described in the following additional remarks, but are not limited to the following.

(Appendix 1)
a communication processing unit that receives a video signal and terminal location information from each of a plurality of terminal devices via a public line;
a determination unit that determines whether there are two or more terminal devices whose terminal positions are within a predetermined range, among the plurality of terminal devices, based on the terminal position information;
A converter that converts one or more video signals out of the two or more video signals received from each of the two or more terminal devices based on the result of the determination into a video signal format used for broadcast wave signals and outputs them. When,
A video transmission processing device comprising:

(Appendix 2)
Based on the determination result, the conversion unit converts two or more video signals received from the two or more terminal devices whose terminal positions are within the predetermined range to the broadcast wave signal. The video transmission processing device according to appendix 1, which converts to a signal format used and outputs the signal.

(Appendix 3)
The determination unit further determines whether each of the two or more terminal devices is a predetermined registered terminal device,
When each of the two or more terminal devices is the predetermined registered terminal device, the conversion unit converts one or more of the two or more video signals received from each of the two or more terminal devices. 3. The video transmission processing device according to appendix 1 or 2, which converts a video signal into a video signal format used for a broadcast wave signal and outputs the converted video signal.

(Appendix 4)
4. The video transmission processing device according to any one of appendices 1 to 3, wherein the video signal received from each of the two or more terminal devices via the public line is an IP (Internet Protocol) signal.

(Appendix 5)
5. The video transmission processing device according to any one of appendices 1 to 4, wherein the video signal format used for the broadcast wave signal is a video signal format conforming to the SDI (Serial Digital Interface) standard.

(Appendix 6)
Receiving a video signal and terminal location information from each of a plurality of terminal devices via a public line;
Determining whether there are two or more terminal devices whose terminal positions are within a predetermined range, among the plurality of terminal devices, based on the terminal position information;
converting one or more of the two or more video signals received from each of the two or more terminal devices based on the result of the determination into a video signal format used for broadcast wave signals and outputting the video signal; ,
A method, including

(Appendix 7)
Receiving a video signal and terminal location information from each of a plurality of terminal devices via a public line;
Determining whether there are two or more terminal devices whose terminal positions are within a predetermined range, among the plurality of terminal devices, based on the terminal position information;
converting one or more of the two or more video signals received from each of the two or more terminal devices based on the result of the determination into a video signal format used for broadcast wave signals and outputting the video signal; ,
A program that causes the processor to execute
(Appendix 8)
Receiving a video signal and terminal location information from each of a plurality of terminal devices via a public line;
Determining whether there are two or more terminal devices whose terminal positions are within a predetermined range, among the plurality of terminal devices, based on the terminal position information;
converting one or more of the two or more video signals received from each of the two or more terminal devices based on the result of the determination into a video signal format used for broadcast wave signals and outputting the video signal; ,
A computer-readable non-transitory recording medium that records a program that causes a processor to execute

2. Description of the Related Art In a video signal transmission system, for example, a video signal received via a public line can be transmitted to broadcast waves with high reliability.

1 system 100 video transmission processing device 141, 151 communication processing unit 143, 153 determination unit 145, 155 conversion unit 200 terminal device

Claims (7)

a communication processing unit that receives a video signal and terminal location information from each of a plurality of terminal devices via a public line;
a determination unit that determines whether there are two or more terminal devices whose terminal positions are within a predetermined range, among the plurality of terminal devices, based on the terminal position information;
A converter that converts one or more video signals out of the two or more video signals received from each of the two or more terminal devices based on the result of the determination into a video signal format used for broadcast wave signals and outputs them. When,
with
The determination unit further determines whether each of the two or more terminal devices is two or more terminal devices used by the same user ,
When each of the two or more terminal devices is two or more terminal devices used by the same user , the conversion unit converts two or more terminal devices received from each of the two or more terminal devices used by the same user . A video transmission processing device that converts a video signal with the highest video quality among video signals into a video signal format used for broadcast wave signals and outputs the video signal. Based on the result of the determination, the conversion unit converts two or more video signals out of video signals received from two or more terminal devices used by the same user whose terminal positions are within the predetermined range. 2. The video transmission processing device according to claim 1, wherein said broadcast wave signal is converted into a signal format used for output. 3. The video transmission processing device according to claim 1, wherein the video signal received via said public line from each of said two or more terminal devices used by said same user is an IP (Internet Protocol) signal. 4. The video transmission processing device according to claim 1, wherein a video signal format used for said broadcast wave signal is a video signal format conforming to SDI (Serial Digital Interface) standards. Receiving a video signal and terminal location information from each of a plurality of terminal devices via a public line;
Determining whether there are two or more terminal devices whose terminal positions are within a predetermined range, among the plurality of terminal devices, based on the terminal position information;
converting one or more of the two or more video signals received from each of the two or more terminal devices based on the result of the determination into a video signal format used for broadcast wave signals and outputting the video signal; ,
including
The determining further determines whether each of the two or more terminal devices is two or more terminal devices used by the same user ;
When each of the two or more terminal devices is two or more terminal devices used by the same user, the outputting includes two or more terminal devices received from each of the two or more terminal devices used by the same user . A method of converting a video signal having the highest video quality among the video signals of the above into a video signal format used for broadcast wave signals and outputting the video signal. Receiving a video signal and terminal location information from each of a plurality of terminal devices via a public line;
Determining whether there are two or more terminal devices whose terminal positions are within a predetermined range, among the plurality of terminal devices, based on the terminal position information;
converting one or more of the two or more video signals received from each of the two or more terminal devices based on the result of the determination into a video signal format used for broadcast wave signals and outputting the video signal; ,
is executed by the processor, and
The determining further determines whether each of the two or more terminal devices is two or more terminal devices used by the same user ;
When each of the two or more terminal devices is two or more terminal devices used by the same user, the outputting includes two or more terminal devices received from each of the two or more terminal devices used by the same user . A program that converts the video signal with the highest video quality among the video signals of the TV to the video signal format used for broadcast wave signals and outputs it . Receiving a video signal and terminal location information from each of a plurality of terminal devices via a public line;
Determining whether there are two or more terminal devices whose terminal positions are within a predetermined range, among the plurality of terminal devices, based on the terminal position information;
converting one or more of the two or more video signals received from each of the two or more terminal devices based on the result of the determination into a video signal format used for broadcast wave signals and outputting the video signal; ,
is executed by the processor, and
The determining further determines whether each of the two or more terminal devices is two or more terminal devices used by the same user ;
When each of the two or more terminal devices is two or more terminal devices used by the same user, the outputting includes two or more terminal devices received from each of the two or more terminal devices used by the same user . A computer-readable non-temporary recording medium on which a program is recorded that converts the video signal with the highest video quality among the video signals of the above into the video signal format used for broadcast wave signals and outputs it.

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