JP2000138763A - Device, method and system for transmitting video and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow even a user who is unfamiliar with the technical knowledge of network setting to operate and manage a remotely installed video transmission server at a low cost and saving him troubles. SOLUTION: A video distribution server 102 receives a connection request signal requesting connection to a video transmission server 101 from a video receiving viewer 103 via the Internet and performs dial-up operation with modems 104 and 105 via a telephone line 106 to communicate with the server 101. And, video transmitted from the server 101 is distributed to the viewer 103 when the server 101 is connected with the server 102 as a result of the dial-up and the connection state between the server 101 and the video distributing device 102 is finished, when the connection between the viewer 103 and the server 102 is made to disconnect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video transmission apparatus, method, system and storage medium for delivering live video from a camera or the like to a PC or the like connected to the Internet.

[0002]

2. Description of the Related Art Conventionally, a camera for obtaining a live image and a video transmission server connected to the camera and transmitting a live image from the camera to the Internet have been installed at remote locations. In this case, the most basic configuration is such that both the video transmission server and the video reception viewer are always connected to the Internet so that any video reception viewer on the Internet can always be connected to the video transmission server. Met.

[0003] However, since the cost of communication becomes too large to constantly connect a remote video transmission server to the Internet, both the video transmission server and the video reception viewer monitor communication using a dial-up router. However, if necessary, a call is made to a communication line such as a telephone line or ISDN line to automatically connect to the Internet, and if there is no communication for a certain period of time, a network configuration that automatically disconnects it is also adopted. I have. In this case,
The communication cost can be considerably reduced as compared with the case of always-on connection.

However, even when connecting to the Internet by two-way dial-up, the communication cost required for a provider contract is still higher than that of a normal one-way dial-up contract. In addition, even at the time of initial setting, a high level of network-related expertise such as a router setting method is required.

[0005] Therefore, in general, in the case of a company having many offices in various places, each office is connected by a dedicated line or the like.
Since they are always connected to the Internet,
If a video transmission server for live video transmission is installed in a remote location, the video transmission server in the remote location and the nearest business office that is always connected to the Internet may be connected to the ISDN line or telephone line as necessary. If a dial-up connection is made via such a means, the communication cost can be reduced considerably.

FIG. 12 is a diagram showing a network configuration of a conventional video delivery system in the above case.
In FIG. 12, the communication line is a normal telephone line, but may be an ISDN line.

[0007] As is apparent from FIG. 12, in the conventional video distribution system, the dial-up routers 301 and 302 are used for the network, so that the video transmission server 101 transmits live video to the video reception viewer 103. Internet 1 only when received
07.

When receiving a live video, the dial-up router 301 connected to the video transmission server 101
The live video is transmitted to the dial-up router 302 of the nearest office via the telephone line 106, and the live video is transmitted to the video receiving viewer 103 via the Internet 107.

[0009]

However, in the above-mentioned conventional video delivery system, the video transmission server 101
It is necessary to assign a public fixed address on the Internet 107 as the IP address. In this case, it is necessary to introduce a new network segment in the video transmission server 101 or to update routing information, and to specialize in network setting. Knowledge is required.

[0010] Therefore, there is a demand for a system in which the installer sets and operates the video transmission server 101 a little more easily and without much effort in terms of cost and management without using a dial-up router. .

In the conventional video distribution system, disconnection is not performed until a certain non-communication time has elapsed.
In addition, even when communications that are not related to video communications, such as broadcasts, are performed, unless a person with networking expertise sets up a packet filter on the dial-up router, the telephone line is automatically Will be connected to.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a video transmission system capable of operating and managing a video transmission server installed in a remote place without any trouble at low cost even for a user who does not have expertise in network setting. It is to provide an apparatus, a method and a system and a storage medium.

[0013]

To achieve the above object, a video transmission apparatus according to the present invention is a video distribution apparatus for relaying a video from a video transmission apparatus to a video reception apparatus. Receiving means for receiving, via the Internet, a connection request signal for requesting a connection from the device to the video transmitting apparatus, and when receiving the connection request signal by the receiving means, dial-up to communicate with the video transmitting apparatus. Dial-up means for performing, and a video for distributing a video transmitted from the video transmission device to the video reception device when the video transmission device and the video delivery device are connected as a result of dial-up by the dial-up device. A delivery unit, and a determination unit that determines whether a connection between the video receiving device and the video delivery device has been disconnected. When the connection is determined to have been cut by said determining means, provided a termination means for terminating the connection state between the video transmitter and the video delivery system.

In order to achieve the above object, a video transmission method according to the present invention is a video distribution method in a video distribution device for relaying a video from a video transmission device to a video reception device. A receiving step of receiving, via the Internet, a connection request signal for requesting a connection to the video transmitting apparatus from the apparatus, and when receiving the connection request signal in the receiving step, dial-up to communicate with the video transmitting apparatus. A dial-up process to be performed, and when the video transmission device and the video distribution device are connected as a result of the dial-up in the dial-up process, the video transmitted from the video transmission device is distributed to the video reception device. A video delivery step, and a determining step for determining whether or not the connection between the video receiving apparatus and the video delivery apparatus has been disconnected. If, when the connection is determined to have been cut in the determination step, it provided the termination step of terminating the connection state between the video transmitter and the video delivery system.

In order to achieve the above object, a video transmission system according to the present invention comprises a video transmission device, a video reception device, and a video delivery for relaying a video from the video transmission device to the video reception device. A video delivery system, comprising: a reception unit that receives, via the Internet, a connection request signal that requests a connection from the video reception device to the video transmission device; and When the connection request signal is received, the dial-up unit that performs dial-up to communicate with the video transmission device, and the dial-up by the dial-up unit results in the video transmission device and the video distribution device being connected. In the case, a video delivery unit that delivers a video transmitted from the video transmission device to the video reception device, Judging means for judging whether or not the connection between the image receiving device and the video delivery device has been cut off; and, when the judgment means judges that the connection has been cut off, the video transmitting device and the video delivery device. Terminating means for terminating the connection state with the device is provided.

In order to achieve the above object, a storage medium according to the present invention is a storage medium storing a program indicating a processing procedure in a video delivery device for relaying a video from a video transmission device to a video reception device. A medium, a receiving module for receiving a connection request signal requesting a connection from the video receiving device to the video transmitting device via the Internet, and when the connection request signal is received by the receiving module, the A dial-up module for performing a dial-up to communicate with a video transmission device; and, when the video transmission device and the video delivery device are connected as a result of dial-up by the dial-up module, the video transmission device transmits the video. Video delivery module for delivering a received video to the video receiving device A determination module for determining whether or not the connection between the video receiving device and the video distribution device has been disconnected; and the video transmission device when the determination module determines that the connection has been disconnected. And a termination module for terminating the connection state between the video delivery device and the video delivery device.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 is a block diagram of the entire video delivery system according to the first embodiment.

Reference numeral 101 denotes a video transmission server located at a remote place, 102 denotes a video delivery server located at a constantly connected office or the like, and 103 denotes a video reception viewer such as an Internet user.

Reference numeral 104 denotes a modem connected to the video transmission server 101, and reference numeral 105 denotes a video delivery server 1.
02 is connected to the modem 10 and the modem 10 is connected to the modem 10.
A telephone line 106 that connects 4 and 105, and 107 is
This is the Internet to which the video delivery server 102 and the video reception viewer 103 are connected.

Although FIG. 1 shows only one video reception viewer, two or more
7 may be connected, and in the first embodiment, description will be made assuming that a plurality of video reception viewers other than 103 are connected to the Internet 107.

FIG. 2 is a diagram showing an example of a hardware configuration of the video delivery server 102.

The inside of the video delivery server 102 has the same hardware configuration as a general computer, and more specifically, the CPU 20 which executes various processes by programs.
1. A memory 202 storing a program, a network for connecting to a network of the Internet 107
RS-232CI / for connecting to I / F 203 and telephone line 106
It comprises a serial I / F 204 such as an F, an FD device 205 for loading a program from a medium, an HD device 206 storing a program, a bus 207 connecting each unit, and the like.

In the first embodiment, the modem 105 is connected to the telephone line 106 by a serial I / F 204 in order to dynamically establish communication. Using an ISDN line instead of 106,
Further, a TA (terminal adapter) device may be used instead of the modem 105.

A program for realizing the first embodiment can be loaded from the FD device 205.

Here, the OS (operating system)
The following describes a mounting method based on Windows NT (registered trademark). Video distribution server 1
02 is loaded into the memory 202 and the CPU
When the processing is executed by the server 201, the connection wait state from the Internet 107 is waited for a connection from the video reception viewer 103. When a connection is made from the video reception viewer 103 to the video delivery server 102, the video delivery server 102 starts dial-up preparation for an actual connection process to the video transmission server 101.

A user can register a plurality of entries as dial-up connection destinations in advance using standard functions of the OS.

FIG. 3 is a specific example of a screen display when a user actually registers a dial-up entry.

As shown in FIG. 3, in Windows NT, by selecting "Dial-up Network" from "My Computer" on the desktop, it is possible to set an entry name, a telephone number, and the like.

If the "RAS client function" of Windows NT is used, it is not necessary to set information necessary for dial-up connection in a router or the like. As an extension of the setting of the video distribution server 102, the setting can be performed naturally, and there is an effect that the setting becomes very easy.

In the first embodiment, the video delivery server 1
On the 02 side, a default connection destination entry can be set from a plurality of dial-up entries registered in FIG. Actually, this value is stored in the registry on the setting panel of the video delivery server 102 or the like, and the value is read from the video delivery server 102 when the program is started.

If the default entry name can be obtained, dial-up is performed from the program of the video delivery server 102 to the dial-up destination. Specifically, Window
s In NT, this can be done by calling the "RasDial function" of the "Win32 Remote Access API". Then, if RasDial () succeeds, the connection processing may be performed from the video delivery server 102 to the video transmission server 101 using a normal network API.

FIG. 4 is a flow chart showing a specific processing flow at that time.

First, after starting the program of the video delivery server 102, the video delivery server 102 determines in step S501
It waits for a connection request from the video reception viewer 103. Therefore, when it is determined in step S502 that there is a connection request from the video reception viewer 103, it is determined in step S503 whether another video reception viewer is already connected to the video distribution server 102. If another video reception viewer is connected, the connection to the video transmission server 101 has already been made, and the process shifts from the connection phase to the video data delivery phase. If it is determined that another video reception viewer is not connected, a default dial-up entry is obtained from the setting information in step S504, and a communication line is connected using the RasDial function in step S505. In step S506, connection processing using a network API is performed (connection processing using a Winsock connect function or the like).

Next, a description will be given of a connection disconnection process when browsing of a live video in the video reception viewer ends.

FIG. 5 is a flowchart showing a specific processing flow at that time.

First, in step S601, a state in which the viewing of the live video in the video reception viewer 103 is completed, that is, a connection between the video reception viewer 103 and the video distribution server 102 is disconnected. State. Next, in step S602, it is determined whether the number of video reception viewers connected to the video distribution server 102 has become 0 after browsing ends, that is, after the connection is disconnected.
If it is not 0, the connection between the video delivery server 102 and the video transmission server 101 is held for another video reception viewer. Also, if it becomes 0, the video delivery server 102
Since it is not necessary to maintain the connection between the network AP and the video transmission server 101, the process proceeds to step S603, and first, the network AP
The connection is disconnected at the I level (connection processing using the close function or the like of Winsock), and then, in step S604, the actual communication line is disconnected using the above-described “RasHangUp function”.

In the first embodiment, since the video distribution server 102 is provided, unlike the conventional technique, the connection is immediately disconnected when the communication becomes unnecessary. Also, in the first embodiment, connection and disconnection are directly controlled by the presence or absence of video communication. Therefore, even when communication unrelated to video communication such as broadcast is performed, automatic connection of the communication line is performed. No connection is made.

Further, in the present embodiment, only the IP address of the video delivery server 102 need only be valid for the Internet 107 (normally, it is conceivable to connect to an existing network segment, in which case it is particularly necessary There is not much work), and there is no problem even if a private address is used for the IP address of the video transmission server 101 side. Also, since the video receiving viewer 103 on the Internet 107 does not directly connect to the video transmitting server 101 but always passes through the video distribution server 102, only the machine of the video distribution server 102 has the IP address of the dial-up side. And the Internet 107 side
It only needs to be able to access both IP addresses.

Note that the OS of the video transmission server 101 is also Window
s Considering NT, it is possible to build a dial-up receiver with the RAS server function.

(Second Embodiment) Next, as a second embodiment, the video receiving viewer 103
A configuration in which a plurality of communication lines that can be connected to a plurality of camera sites (video transmission servers) via 02 and that can be used is also considered.

FIG. 6 is a diagram showing a network configuration of a video delivery system according to the second embodiment.

6 differs from FIG. 1 in that a plurality of video transmission servers such as 701, 702, and 703 are provided. And these,
The video transmission servers 701, 702, and 703 are all connected to the video delivery server 1 via a unique modem and a telephone line 106.
02.

In the case of FIG. 6 as well, a telephone line and a modem are used for dial-up connection. Of course, an ISDN line and a TA may be used. The number is not limited to three, but may be any number.

Here, if the number of connectable video transmission servers is smaller than the number of available communication lines, the processing in the first embodiment can be realized by natural extension.

In the second embodiment, the video receiving viewer 103 transmits the name of the video transmission server to be connected to the video distribution server 102 after connecting to the video distribution server 102. The video delivery server 102 has a table of the name of the video transmission server and the entry of the dial-up connection destination for the video transmission server, and determines the dial-up connection destination entry according to the name of the video transmission server requested to be connected from the video reception viewer 103. I do.

Therefore, connection and disconnection processing is performed for each video transmission server so as to manage the number of video reception viewers 103 connected thereto.

FIG. 7 is a flowchart showing the flow of processing when the video receiving viewer 103 is connected in the second embodiment.

First, after the program of the video delivery server 102 has been started, the video delivery server 102 executes step S801.
Then, it waits for a connection request from the video reception viewer 103. Therefore, if it is determined in step S802 that there is a connection request from the video reception viewer 103, the process proceeds to step S803.
Then, the name of the video transmission server that transmits the live video to be viewed from the video reception viewer 103 is acquired. Then, for example, the video transmission server is set to 7 in FIG.
If it is 01, in step S804, it is determined whether or not the video reception viewer 103 is connected to the video transmission server 701. If the connection is being made, the process shifts from the connection phase to the video data delivery phase. If the connection is not established, a default dial-up entry is obtained from the setting information in step S805. In step S806, a connection is made using the vacant communication line using the RasDial function. In step S807, Perform connection processing using the network API (connection processing using the Winsock connect function, etc.).

FIG. 8 is a flowchart showing the flow of processing when the video receiving viewer 103 is disconnected in the second embodiment.

First, in step S901, a state in which the viewing of the live video on the video reception viewer 103 is completed, that is, a connection between the video reception viewer 103 and the video distribution server 102 is disconnected. State. Next, in step S902, after the browsing ends, that is, after the connection is disconnected, the video transmission server 7 connected to the video reception viewer 103 via the video distribution server 102.
It is determined whether or not the number of video receiving viewers connected to 01 has become 0. If it is not 0, the connection between the video delivery server 102 and the video transmission server 701 is held for another video reception viewer. If the value becomes 0, the connection between the video delivery server 102 and the video transmission server 701 does not need to be maintained, and therefore, step S903 is performed.
First, the connection is disconnected at the network API level (connection processing using the close function of Winsock, etc.), and then, in step S904, the above-described “RasHangUp function”
To disconnect the actual communication line.

(Third Embodiment) In the above-described second embodiment, processing has been described on the assumption that the number of connectable video transmission servers is smaller than the number of available communication lines. In the embodiment, a process will be described on the assumption that the number of connectable video transmission servers is larger than the number of available communication lines.

As in the third embodiment, when the number of connectable video transmission servers is larger than the number of available communication lines and all available communication lines are already used, However, even if there is a connection request from the video reception viewer, the video reception viewer cannot be connected to a desired video transmission server, so that the video reception viewer enters a connection waiting state. Then, the connection waiting state continues until the communication between the other video reception viewer and the video transmission server ends naturally or is forcibly terminated. Of course, when the connection waiting state is canceled by the user's will, the connection waiting state is naturally terminated.

The processing relating to the connection and disconnection of the video delivery server in the third embodiment is performed according to the flowcharts of FIGS.

FIG. 9 is a flowchart showing the flow of processing when the video receiving viewer 103 is connected in the third embodiment.

First, after the program of the video delivery server 102 is started, the video delivery server 102 executes step S100
In step 1, the process waits for a connection request from the video reception viewer 103.
Then, if it is determined in step S1002 that there is a connection request from the video reception viewer 103, step S10
At 03, the name of the video transmission server that transmits the live video to be viewed from the video reception viewer 103 is acquired. Then, in step S1004, it is determined whether there is an unused unused line. If there is no free line, the process proceeds to step S1009, in which the video receiving viewer 103 is set to a connection waiting state, and the CPU 201 in the video delivery server 102 is connected to the video receiving viewer for each video transmitting server. Count the number of
The memory 202 holds the counted number of video reception viewers waiting for connection. Then, in step S1010, a connection review process is performed. This connection review process will be described later.

If it is determined in step S1004 that there is a free line, for example, the video transmission server to which the video reception
In step S1005, the video receiving server 1 sends the video receiving viewer 1
03 is connected or not. If the connection is being made, the process shifts from the connection phase to the video data delivery phase.
If the connection is not established, in step S1006,
A default dial-up entry is obtained from the setting information, and in step S1007, a connection is made using a vacant communication line using the RasDial function, and step S107 is performed.
08, a connection process using the network API is performed (W
Connection processing using connect function of insock).

FIG. 10 is a flowchart showing a flow of processing when the video receiving viewer 103 is disconnected in the third embodiment.

First, in step S1101, the state is awaiting that the connection between the video receiving viewer 103 and the video distribution server 102 is disconnected. Next, step S11
In 02, it is determined whether or not the video receiving viewer 103 disconnected from the video delivery server 102 after the disconnection is in a connection waiting state. If it is in the connection waiting state, it means that the connection waiting has been canceled, and the process advances to step S1106, and the connection waiting video reception viewer stored in the memory 202 of the video distribution server 102 for each video transmission server. Update the number of.

If it is determined in step S1102 that the connection is not in the connection waiting state, it means that the live video was being viewed on the video reception viewer 103 until the connection was disconnected. It is determined whether or not the number of the video reception viewers connected to the video transmission server 701 connected via the video reception viewer 103 and the video distribution server 102 has become zero. If it is not 0, the connection between the video delivery server 102 and the video transmission server 701 is held for another video reception viewer. If the value becomes 0, the connection between the video delivery server 102 and the video transmission server 701 does not need to be maintained, so the process proceeds to step S1104.
Disconnect at the network API level (Winsock Clos
connection processing using e-function or the like), and then step S1
At 105, the actual communication line is disconnected using the "RasHangUp function" described above. Then, step S101
At 0, the connection is reviewed as in the case of FIG. This connection review process will be described later.

Here, the connection review process in step S1010 will be described in detail.

FIG. 11 is a flowchart illustrating the flow of the connection review process.

First, in step S 1201, a video transmission server that has the smallest number of connections (at least one) of the current video reception viewer is selected. Here, when there are a plurality of video transmission servers with the smallest number of connections to the video reception viewer, the video transmission server with the longer connection time is selected.
The connection time is measured by the CPU 201. here,
As an example, the video transmission server 701 in FIG. 6 is selected.

Next, in step S1202, the video transmission server that has the largest number (one or more) of video reception viewers waiting for connection at present is selected. Here, when there are a plurality of video transmission servers with the largest number of video reception viewers waiting for connection, the video transmission server with the longer waiting time is selected. The waiting time is measured by the CPU 201. Here, as an example, the video transmission server 702 in FIG.
I will choose.

On this premise, the process proceeds to step S1203 (the video transmission server 701 and the video transmission server 702).
), The video transmission server 701
Is compared with the number of video reception viewers connected to the video transmission server 702 and waiting for connection. When the number of video reception viewers connected to the video transmission server 701 is larger, the connection state is maintained as it is. Conversely, the video transmission server 702
If the number of video receiving viewers in the connection waiting state is larger, the video receiving viewer in the connection waiting state must be immediately connected to the video transmission server 702. However, since all communication lines are in use, it is necessary to forcibly terminate the connection between the video delivery server 102 and the video transmission server 701 here. The processing for that is performed in step S10.
24 or less.

More specifically, in step S1024, the video delivery server 10
2 and the video transmission server 701 are disconnected. The disconnection may be notified to the video reception viewer that has been connected up to that time. Then, the process proceeds to step S1025, and the communication line corresponding to the video transmission server 701 is substantially disconnected using the “RasHangUp function”.

Thereafter, the flow advances to step S1206, and this time, the video transmission server 7 uses the "RasDial function".
02 is connected to the video delivery server 102 using the communication line that has been opened by the disconnection. Then, step S10
In step 27, the video delivery server 102 and the video transmission server 702 are substantially connected using the network API.

As described above, by forcibly disconnecting the video receiving viewer who is viewing the live video longer than necessary, the video receiving viewer waiting for connection is preferentially connected. be able to.

As described above, according to the first and second embodiments of the present invention,
According to the second and third embodiments, the video delivery server 1
02, the dial-up ID and the password can be managed by the video distribution server 102.
Setup is easy. Also, unlike a dial-up router, connection and disconnection of a line can be performed efficiently. Also, connection is made only when necessary for video communication, and unnecessary connection is not made by DNS or name resolution mechanism on the OS side. Also, the video distribution server 102
Since only the IP address and the routing information need to be notified to the Internet, there is no need to notify the IP address of the remote video transmission server, and the IP address of the video transmission server is dynamically allocated when the communication path is established. It is also possible. Further, when connecting and disconnecting to a plurality of video transmission servers using a plurality of lines, efficient and appropriate processing can be performed.

[0069]

As described above, according to the present invention,
Even if you have no network configuration expertise,
There is an effect that a video transmission server installed in a remote place can be operated and managed at low cost and without trouble.

[Brief description of the drawings]

FIG. 1 is a network configuration diagram of a video delivery system according to a first embodiment.

FIG. 2 is a hardware configuration diagram inside the video delivery server according to the first embodiment.

FIG. 3 is a diagram showing an example of an entry registration screen at the time of dial-up connection.

FIG. 4 is a flowchart illustrating a processing flow when a video reception viewer is connected in the first embodiment.

FIG. 5 is a flowchart showing a flow of processing when a video receiving viewer is disconnected in the first embodiment.

FIG. 6 is a network configuration diagram of a video delivery system according to the second and third embodiments.

FIG. 7 is a flowchart illustrating a flow of processing when a video reception viewer is connected in the second embodiment.

FIG. 8 is a flowchart illustrating a processing flow when a video reception viewer is disconnected in the second embodiment.

FIG. 9 is a flowchart illustrating a flow of processing when a video reception viewer is connected in the third embodiment.

FIG. 10 is a flowchart illustrating a flow of processing when a video receiving viewer is disconnected in the third embodiment.

FIG. 11 is a flowchart illustrating a flow of a connection review process according to the third embodiment.

FIG. 12 is a network configuration diagram of a conventional video delivery system.

[Explanation of symbols]

 101 video transmission server 102 video delivery server 103 video reception viewer 104 modem 105 modem 106 telephone line 107 internet 201 CPU 202 memory 203 network I / F 204 serial I / F 205 FD device 206 HD device 207 bus 301 dial-up router 302 dial-up router 701 Video transmission server 702 Video transmission server 703 Video transmission server

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (16)

[Claims] 1. A video delivery device for relaying a video from a video transmission device to a video reception device, and receiving a connection request signal requesting a connection from the video reception device to the video transmission device via the Internet. Means, when the connection request signal is received by the receiving means, dial-up means for performing a dial-up to communicate with the video transmission device, as a result of dial-up by the dial-up means,
A video delivery unit that delivers a video transmitted from the video transmission device to the video reception device when the video transmission device and the video distribution device are in a connected state; and the video reception device and the video distribution device. Determining means for determining whether or not the connection between the video transmitting apparatus and the video distribution apparatus is determined when the determining means determines that the connection has been disconnected. A video transmission device, comprising: termination means for terminating the video transmission. 2. When the connection request signal is received by the receiving unit and the video receiving device is already connected to the video transmitting device via the video delivery device, dial-up by the dial-up device is performed. 2. The video transmission apparatus according to claim 1, wherein the video transmission is not performed. 3. The video transmission apparatus according to claim 1, wherein said dial-up means and said ending means perform a process based on a type of an OS. 4. When there are a plurality of video receiving devices, even if the determining means determines that the connection between the video receiving device and the video distribution device has been disconnected, the other video receiving devices are not connected to the video receiving device. 2. The video transmission apparatus according to claim 1, further comprising a prohibition unit that prohibits termination of a connection state between the video transmission apparatus and the video distribution apparatus when the video transmission apparatus is connected. . 5. A name acquisition unit for acquiring a name of a video transmission device to which the video reception device attempts to connect when the reception unit receives the connection request signal when a plurality of the video transmission devices are present. The video transmission apparatus according to claim 1, further comprising: dial-up means for performing dial-up for communication with the video transmission apparatus acquired by the name acquisition means. 6. In a case where there are a plurality of said video transmission devices, and when the number of said video transmission devices is larger than the number of communication lines connected to said video distribution device, a name is obtained by said name obtaining means. Determining means for determining whether or not there is an empty communication line for connecting the set video transmitting apparatus and the video distribution apparatus; and if the determining means determines that there is no empty communication line, 6. The video transmission apparatus according to claim 5, further comprising storage means for storing information indicating that said video reception apparatus is in a connection waiting state of said video transmission apparatus. 7. A connection state changing means for changing a connection state between the video transmitting apparatus and the video distribution apparatus as required when a video receiving apparatus in a connection waiting state is stored in the storage means. 7. The video transmission device according to claim 6, comprising: 8. A video distribution method in a video distribution device for relaying a video from a video transmission device to a video reception device, wherein a connection request signal for requesting a connection from the video reception device to the video transmission device is transmitted to the Internet. A receiving step of receiving the connection request signal in the receiving step,
A dial-up step of performing a dial-up to communicate with the video transmission device; and, as a result of the dial-up in the dial-up process, when the video transmission device and the video delivery device are in a connected state, a call is transmitted from the video transmission device. A video delivery step of delivering the video to be received to the video receiving apparatus; a determining step of determining whether or not the connection between the video receiving apparatus and the video delivering apparatus has been disconnected; and A termination step of terminating a connection state between the video transmission device and the video distribution device when it is determined that the video transmission device has been disconnected. 9. When the connection request signal is received in the receiving step, and the video receiving apparatus is already connected to the video transmitting apparatus via the video delivery apparatus, the dial-up step is performed. 9. The video transmission method according to claim 8, wherein dial-up is not performed. 10. The dial-up process in the dial-up process and the termination process in the termination process,
9. The video transmission method according to claim 8, wherein processing is performed based on a type of the OS. 11. When there are a plurality of video receiving devices, even if it is determined in the determining step that the connection between the video receiving device and the video distribution device has been disconnected, the other video receiving devices are not 9. The video transmission method according to claim 8, further comprising a prohibition step of prohibiting termination of a connection state between the video transmission device and the video distribution device when the video transmission device is connected. . 12. When there are a plurality of said video transmitting devices, a name obtaining step of obtaining a name of a video transmitting device to which said video receiving device is to connect when said connection request signal is received in said receiving step. 9. The video transmission method according to claim 8, further comprising: performing a dial-up in the dial-up step to communicate with the video transmission device obtained in the name obtaining step. 13. In the case where there are a plurality of said video transmission devices and the number of said video transmission devices is larger than the number of communication lines connected to said video distribution device, a name is obtained in said name obtaining step. A determining step of determining whether or not there is an empty communication line for connecting the video transmitting apparatus and the video distribution apparatus, and if it is determined that there is no empty communication line in the determining step, 13. The video transmission method according to claim 12, further comprising: storing information indicating that said video reception device is in a connection waiting state of said video transmission device in a storage means. 14. A connection state changing step for changing a connection state between the video transmission device and the video distribution device as needed when a video reception device in a connection waiting state is stored in the storage means. 14. The video transmission method according to claim 13, further comprising: 15. A video distribution system, comprising: a video transmission device, a video reception device, and a video distribution device for relaying a video from the video transmission device to the video reception device, wherein the video distribution device comprises: Receiving means for receiving, via the Internet, a connection request signal for requesting connection from the video receiving apparatus to the video transmitting apparatus; and for communicating with the video transmitting apparatus when the receiving request means receives the connection request signal. Dial-up means for performing a dial-up on the result of the dial-up by the dial-up means,
A video delivery unit that delivers a video transmitted from the video transmission device to the video reception device when the video transmission device and the video distribution device are in a connected state; and the video reception device and the video distribution device. Determining means for determining whether or not the connection between the video transmitting apparatus and the video distribution apparatus is determined when the determining means determines that the connection has been disconnected. A video transmission system comprising: a termination unit for terminating the video transmission. 16. A storage medium storing a program indicating a procedure of a process in a video distribution device for relaying a video from a video transmission device to a video reception device, wherein a connection from the video reception device to the video transmission device is provided. A reception module for receiving a connection request signal requesting via the Internet, and a dial-up module for performing a dial-up to communicate with the video transmission device when the connection request signal is received by the reception module, As a result of dial-up by the dial-up module, when the video transmission device and the video distribution device are connected, a video distribution module for distributing a video transmitted from the video transmission device to the video reception device; The connection between the video receiving device and the video distribution device is A determination module for determining whether or not the connection has been disconnected; and, when the determination module determines that the connection has been disconnected, for terminating a connection state between the video transmission device and the video distribution device. A storage medium comprising an end module.