JP2001274807A - System for video transmission service - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video transmission service system capable of easily relaying and transmitting digital high vision material between optional places and performing a flexible video transmission service. SOLUTION: Video boxes 5 are installed at a plurality of optional places and also connected to one another through an ATM network 3, and video from a plurality of video boxes can simultaneously be relayed to the plurality of video boxes 5 through the network 3 by the connection control of a switching center 1 corresponding to a user request in such a manner that digital high vision video relayed from the video boxes 5 is transmitted to the other video boxes through the network 3 and the center 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a digital video,
For example, the present invention relates to an image transmission service system for transmitting an image including a digital high-definition image, and more specifically, to a plurality of places (venues) such as a stadium, an event venue, an airport, a station, a street corner, and the like that require the image.
The present invention relates to a video transmission service system in which a plurality of video boxes capable of transmitting and receiving video are installed at (point), and a video transmission service via an ATM network can be efficiently performed between the plurality of video boxes.

[0002]

2. Description of the Related Art Video transmission between a plurality of points has conventionally been performed in a mesh type on a point-to-point basis.
-point) in the form of a dedicated line.

More specifically, for example, when a plurality of television stations shoot an event to be performed at a Budokan and transmit the video to the own station, each television station prepares a dedicated line between itself and the Budokan, and transmits the video. Do. The dedicated line used in this case is laid and removed point-to-point according to the intended use, and is restricted by a minimum usage period of one year.

[0004] As a method of transmitting an image from a relay point, there are conventionally a method using wireless and a method using wired. The method of using radio is FPU (Field
Pickup Unit: A portable relay transmission device using microwaves. Since the microwave used in the FPU has a high straightness, it is difficult for radio waves to pass due to bad weather or obstacles such as high-rise buildings. Also, in this method, it is difficult to secure a parking lot, especially in the city center, because an FPU vehicle equipped with an FPU is used. Further, in this method, since the license is limited so that only about four licenses are assigned to one key station at a maximum, it is impossible to relay or collect images from multiple points at the same time.

[0005] As another method using wireless communication, S
There is a method using NG (Satellite News Gathering: portable relay transmission device using satellite). This method is unsuitable for long-time sports broadcasts and the like because of a large delay due to passing through a satellite and fading due to rainfall. Also, the transmission capacity per transponder is limited, and even if all are occupied, a maximum of 45 Mbp
s, it is difficult to transmit high-definition digital HDTV.

At present, wired transmission means specialized in video are:
There is no full-scale service for a network that can transmit digital video in most of the analog video transmission services that have many restrictions such as where to use. It is possible to transmit digital video over ATM dedicated lines, but the cost is significantly higher, one application must be applied for each destination, and the minimum usage period is one year. However, it does not meet the needs of relay broadcasting that requires flexible response.

[0007]

As described above, the conventional video transmission is a point-to-point transmission.
-point) in the form of a dedicated line, which makes it difficult to relay video from places where no dedicated line is laid. There is a problem that it is not possible to easily cope with an attempt to relay a video in a short period of time, for example, on a daily basis, since the cable is laid fixedly and almost all have a minimum usage period.

[0008] In the video transmission method, conventionally,
Among the methods using radio, the method using FPU includes:
Due to the directness of microwaves, radio waves are difficult to pass due to bad weather and obstacles such as high-rise buildings, and it is difficult to secure a parking lot for FPU vehicles equipped with FPUs, and licenses are limited. There is a problem that it is not possible to relay or collect images from a point.

Also, the method using SNG has a large delay due to satellites, and is not suitable for long-time sports broadcasting due to fading due to rainfall and the like, and it is difficult to transmit high-definition HDTV digital transmission. There's a problem.

[0010] Furthermore, the conventional method of transmitting digital video over an ATM leased line or the like requires a significant increase in cost, necessitates an application one by one for each destination, and a minimum usage period of one year. There is a problem in that the restrictions are overlapped and the system does not meet the needs of relay broadcasting that requires flexible support.

[0011] The present invention has been made in view of the above,
It is an object of the present invention to provide a video transmission service system that can easily relay and transmit digital high-definition materials between arbitrary locations and enables flexible video transmission services.

[0012]

According to one aspect of the present invention, there is provided a video transmission service system for transmitting video including digital video, wherein the video transmission service system is installed at a plurality of arbitrary locations. A plurality of video boxes capable of transmitting and receiving video, and a plurality of video boxes for transmitting a video transmitted from the video box and transmitting a video transmitted to the video box to the video box. An interconnecting ATM network and said AT
Switching that is connected to an M network and controls connection between a plurality of video boxes via an ATM network in response to a request from a user so that images between the plurality of video boxes can be relayed via the ATM network; The point is to have a center.

According to the first aspect of the present invention, video boxes are installed at a plurality of arbitrary locations and are connected to each other via an ATM network, and are relayed from the video boxes. Is transmitted to another video box via the ATM network and the switching center, so that the video from the plurality of video boxes is transmitted to the plurality of video boxes via the ATM network by connection control by the switching center according to a request from a user. Because it can be relayed, A by the switching center according to the user's request
Full-scale digital high-definition video relay transmission between arbitrary points can be easily performed only by setting the route of the TM network, and the setting and release of the video transmission path without using a dedicated line as in the past is extremely easy. This can be easily performed, and efficiency and convenience can be improved. Also, advanced editing of video relayed from a plurality of video boxes and insertion of information into the video can be performed easily and efficiently at a relay site. Furthermore, since connection between a plurality of video boxes is possible only by switching connection of the ATM network, urgent use can be dealt with promptly and flexibly. Further, by copying the video from a plurality of video boxes at the switching center, the same video can be simultaneously transmitted to a required point.

[0014] The present invention described in claim 2 is the same as claim 1.
In the described invention, the one or more video boxes may be configured to transmit video transmitted from the one or more video boxes to the one or more video boxes.
1 via TM network and switching center
The gist is that it is configured to be able to connect to one or more video boxes at the same time.

According to the second aspect of the present invention, a video transmitted from one or more video boxes can be transmitted to one or more video boxes via an ATM network and a switching center. , N vs. m
Multicast can be easily performed.

Further, the present invention according to claim 3 provides the invention according to claim 1.
In the described invention, the video box is the AT
Line connection means for connecting to an M network;
Cell disassembly and transmission means for disassembling and assembling transmission data in units of cells for transmission in the M network; and video equipment connected to the cell disassembly and transmission means via CODEC. Is the gist.

According to the third aspect of the present invention, the video box is connected to the ATM network via the line connection means, and the transmission data is disassembled and assembled in cell units for transmission in the ATM network by the cell disassembly / assembly transmission means. However, since the video equipment is connected via the CODEC, the video box can be configured in a relatively small box shape or rack shape, and can be easily installed in any place,
In a system that mainly focuses on PEG video transmission, it can be immediately connected to an MPEG2 CODEC that is brought in and connected to an installation point.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the plurality of video boxes are connected in a star type via an ATM network.

According to the fourth aspect of the present invention, since the plurality of video boxes are connected in the form of a star through the ATM network, the connection of the plurality of video boxes can be easily performed, and the user can use the system in one day. It is easy to deal with contract-like usage.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the video box is connected to an optical wireless device.

According to the fifth aspect of the present invention, since the optical wireless device is connected to the video box installed at the relay point, the photographing point can be expanded to a place where the line of sight can be seen. Flexible content collection becomes possible.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an overall configuration of a video transmission service system according to an embodiment of the present invention. The video transmission service system shown in FIG.
(Asynchronous Transfer Mode) A network 3 is used as a video transmission medium. In this ATM network 3, a plurality of video boxes 5a to 5f are connected in a star type, and a switching center 1 is connected to a central command tower. And video boxes 5a-5f are ATM
The video boxes 5a to 5f can be connected to each other via the network 3 and the switching center 1.

As shown in FIG. 2, the video box 5
DSU (Digital Service Unit) 11, which is a line connection means for connecting to the TM network 3, and CLAD, which is a cell disassembly / assembly transmission means for disassembling and assembling transmission data for transmission in the ATM network 3 in units of cells.
(Cell Assembly Disassembly) 13 and power supply 15
And a video device 23 is connected to the CLAD 13 via the CODEC 21. The video box 5 is housed collectively in, for example, a 6 '× 19' structure rack or the like, and has a structure which can be easily installed in an arbitrary place such as a stadium, an airport, a station, a street corner, or the like. . In a video transmission service system that focuses on MPEG video transmission, the UN
I is DVB-ASI, and the user can immediately connect to the MPEG-2 CODEC that is brought to the installation point and connected.

As shown in FIG. 3, the video transmission service system according to the present embodiment configured as described above, for example, transmits a video relayed at a relay point from the video box 5a to the video box 5a.
Via the TM network 3, the switching center 1, and the ATM network 3, a plurality of video boxes 5c, 5d,
5e and transmitted in real time to these video boxes 5
The video from one or more video boxes 5 can be multicast-transmitted to one or more video boxes 5 such that the video received in c, 5d, 5e can be transmitted to each broadcasting station. . Also, the video relayed at the respective relay points, such as the video boxes 5a and 5f, is multi-site relayed by the video boxes 5a and 5f and transmitted to the switching center 1 via the ATM network 3. The two images from 5a and 5f are subjected to processing such as mixing at the switching center 1 and transmitted from the switching center 1 to one video box 5e via the ATM network 3.
The video box 5e can also transmit to the broadcasting station. In such a real-time relay video transmission service, for example, a transmission band of 8 to 135 Mbps can be adaptively used.

Further, as shown by the dotted lines in FIG. 3, the video files from the producer are transferred from the video box 5b to the ATM network 3, using the video boxes 5b and 5c.
High-speed transfer to the video box 5c via the switching center 1 and the ATM network 3 and transmission from the video box 5c to the broadcasting station, and further from the broadcasting station via the reverse route to the video box 5c, the ATM network 3, the switching center 1, and the ATM Video files can be transferred at high speed to the producer via the network 3 and the video box 5b. Similarly, such a high-speed video file transfer service can be used by adaptively setting a transmission band of 8 to 135 Mbps.

That is, the video transmission service system according to the present embodiment can freely provide a video transmission service to any two or more locations where the video box 5 is installed. It should be noted that the connection between the plurality of video boxes 5 is such that the user of the present video transmission service sets the number of days, the band, the video format, etc. of the present video transmission service to the switching center 1 as shown in FIG. By making a reservation until the day before, the connection control in the switching center 1 can be freely performed.

In order to provide the video transmission service, the video box 5 is, for example, a stadium,
Any place where video is frequently relayed, such as airports, around stations, street corners, etc., places with file transfer needs,
It is installed in broadcasting stations that transmit and receive video.

FIG. 4 is a diagram showing a service image of the video transmission service system shown in FIG. The users of the video transmission service system are, for example, broadcasting stations that perform live transmission and material transmission, content producers such as commissioned broadcasters, and post-production such as material transmission and preview transmission. These users use the present video transmission service system by applying to the operator of the switching center 1 of the present video transmission service system by the day before the use together with information such as the use time, the required bandwidth, and the video format. be able to. When the operator accepts the use application from the user, the operator performs VP and VC path settings corresponding to the application contents to the ATM network 3 and performs multicast switching between the necessary video boxes 5.

FIG. 5 is an explanatory diagram showing an example of a use state of the present video transmission service for relaying live events such as sports and live events as shown in FIG. 5A as a result of the multicast switching described in FIG. is there. That is, as shown in FIG. 5 (b), sports and music are relayed in real time, and CGs and telops are immediately edited and transmitted to a broadcasting station by a specialized production in conjunction with a live broadcast. It is.

More specifically, images of the stadium and the live house taken by a television camera are relayed by video boxes 5f and 5a, respectively, and are transmitted by NTT (registered trademark).
The data is transmitted to the video box 5d via the accommodation station, the ATM network 3, the switching center 1, the ATM network 3, and the NTT accommodation station, and transmitted from the video box 5d to the broadcasting station. In conjunction with the broadcast, for example, "Home R
Instantly edit telops and CGs such as "un" and "JAPAN TOUR", and add the edited telops and CGs to video box 5e.
To the video box 5d via the NTT accommodating station, the ATM network 3, the switching center 1, the ATM network 3, and the NTT accommodating station, and from the video box 5d to the broadcasting station.

As described above, the video transmission service system according to the present embodiment provides a video box 5, an ATM network 3, a switching center, and a video which is a live broadcast of a plurality of events performed in a plurality of different places such as sports and live. In addition to transmitting the broadcast to the broadcast station via the broadcast station 1, the telop and the CG can be immediately edited in conjunction with the live broadcast, and transmitted to the broadcast station in the same manner.

Also, by connecting an optical wireless transmission device to the DSU in the video box 5g installed at the relay point and using a portable video box, the shooting point can be expanded to a place where the line of sight can be seen within a radius of 2km. can do. This enables flexible content collection.

The optical wireless transmission device used here is a device that completes a communication line similar to an optical fiber by installing units such as a laser beam at two points on a straight line that can be seen at both ends. Since there is no need to allocate or license radio waves, and installation / removal is simple, transmission needs can be satisfied in places where networks cannot be laid or for temporary transmission.

FIG. 6 is a diagram showing an example of a video transmission service in which the present video transmission service system is connected to an information camera as shown in FIG.

More specifically, as shown in FIG. 6 (b), traffic information captured by a television camera installed at an appropriate place such as the roof of a building is transmitted from a video box 5a to an NTT accommodation station, an ATM network 3, Switching center 1, A
The weather information observed by the camera provided on the roof of the NTT building A is transmitted from the video box 5b to the video box 5e.
The video box 5e is transmitted to the video box 5e via the TM network 3, and the street information observed by the camera provided on the roof of the NTT building B is transmitted from the video box 5b to the video box 5e via the same route passing through the ATM network 3. Broadcast stations connected to the video box 5e provide traffic information,
It receives weather information and street information, and edits such information such as switching.

As described above, according to this embodiment, the video boxes 5a and 5f placed at the relay point and the ATM network 3 connecting the video box and the switch center need the video of the relay point. Can be shared by multiple users.

As shown in FIG. 1, the user of the present video service can use the present video transmission service for a number of days,
Since an application is made each time the usage band is used, it is possible to convert charges based on the usage band on a daily basis.

Therefore, a user using the transmission service can use a dedicated network at a low price.

[0039]

As described above, according to the present invention,
A picture box is set up at a plurality of arbitrary places and A
The video from a plurality of video boxes is connected to each other via the TM network and transmitted from the video box to another video box via the ATM network and the switching center by transmitting the video including the digital high-definition video from the video box to the user. Can be simultaneously relayed to a plurality of video boxes via the ATM network by the connection control by the switching center in response to the request from the user. Full-fledged digital high-definition video relay transmission between points can be easily performed, and video transmission lines can be set and released very easily without using a dedicated line as in the past. Convenience can be achieved. In addition, advanced editing of video relayed from a plurality of video boxes and insertion of information into the video can be performed easily and efficiently at a relay site, and connection between the plurality of video boxes is simply performed by an ATM network. Since it is possible only by switching connection, urgent use can be dealt with promptly and flexibly. Further, by copying the video from a plurality of video boxes at the switching center, the same video can be simultaneously transmitted to a required point.

Further, according to the present invention, the video transmitted from one or more video boxes can be transmitted to one or more video boxes via the ATM network and the switching center. Multicast can be easily performed.

Further, according to the present invention, the picture box is connected to the ATM network via the line connection means, and the transmission data is disassembled and assembled in cell units for transmission in the ATM network by the cell disassembly / assembly transmission means.
Since video equipment is connected via EC, the video box can be configured in a relatively small box shape or rack shape,
It can be easily installed at any place, and can be immediately connected to an MPEG2 CODEC that is brought into and connected to an installation point in a system that mainly focuses on MPEG video transmission.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of a video transmission service system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a video box used in the video transmission service system of the embodiment shown in FIG.

FIG. 3 is a diagram for explaining an outline of a service of the video transmission service system of the embodiment shown in FIG. 1;

FIG. 4 is a diagram showing a service image of the video transmission service system of the embodiment shown in FIG.

FIG. 5 is an explanatory diagram showing an example of a use state when the video transmission service system of the embodiment shown in FIG. 1 is used as a main video transmission service that relays live events such as sports and live events.

FIG. 6 is a diagram showing an example of a video transmission service in which the video transmission service system of the embodiment shown in FIG. 1 is connected to an information camera and performs fixed point relay.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Switching center 3 ATM network 5 Video box 11 DSU 13 CLAD 21 CODEC 23 Video equipment

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Sousuke Imae 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo F-term within Nippon Telegraph and Telephone Corporation (reference) 5C064 BA07 BB05 BC10 BC11 BC16 BD01 BD08 5K030 GA16 HA10 HB02 HB14 HC01 JA06 JA11 JT04 JT09 KA05 KA19 KX28 LA19 LB02 LD05 LD07 9A001 BB04 CC02

Claims (5)

[Claims] 1. A video transmission service system for transmitting a video including a digital video, comprising: a plurality of video boxes installed at a plurality of arbitrary locations and capable of transmitting / receiving a video; A for transmitting a video and interconnecting a plurality of video boxes to transmit a video transmitted to the video box to the video box;
A connection between a plurality of video boxes via an ATM network connected to a TM network and the ATM network so that images between the plurality of video boxes can be relayed via the ATM network; A video transmission service system, comprising: a switching center that performs control in response to the request. 2. The one or more video boxes are connected via an ATM network and a switching center so that the video transmitted from the one or more video boxes can be transmitted to the one or more video boxes. 2. The video transmission service system according to claim 1, wherein the video transmission service system is configured to be able to simultaneously connect to one or more video boxes. 3. The video box has line connection means for connecting to the ATM network and cell disassembly / assembly transmission means for disassembling and assembling transmission data in units of cells for transmission in the ATM network. 2. A video transmission service system according to claim 1, wherein a video device is connected to said cell disassembly / transmission means via a CODEC. 4. The video transmission service system according to claim 1, wherein said plurality of video boxes are connected in a star type over an ATM network. 5. The video transmission service system according to claim 1, wherein the video box is connected to an optical wireless device.