KR0143938B1 - Video communication system - Google Patents

Abstract

The present invention relates to a video communication system for providing a variety of services, and receives an RF signal through an antenna and converts it into a baseband video signal, and distributes and amplifies video and audio signals to supply public and satellite broadcast signals. CATV system for; A VRS system having a database of a plurality of moving images, still images, and audio information for supplying image information and audio information according to a user's request; CCTV system for monitoring the situation in a certain area through the camera image information; A video conferencing system for allowing a plurality of users to conduct a meeting while watching the other party through a TV screen; A plurality of terminal devices connected to the one systems to perform their own functions or jointly connected to the plurality of systems to perform various functions; And a control device for distributing and managing a signal transmitted from the system to the terminal device in response to a request from the terminal device.

Description

Video communication system

1 is an overall schematic diagram of a video communication system

2 is a detailed block diagram of a video communication system according to the present invention.

3a to 3e are data communication system diagrams between the respective systems.

4 is an interlocking diagram between each component system in a video communication system

5a to 5f are interlocking diagrams for respective systems of the integrated video system.

The present invention relates to a video communication system for providing various services, and more particularly, to a video integrated communication system for comprehensively processing video related services such as video conferencing, CCTV, CATV and providing services to users.

As the society develops, the necessity of image information is increased, and thus, a large amount of information is required and efficient use of image information is required. Conventionally, a system for servicing a limited type of video information for a specific purpose, such as a CCTV system or a video conference system, has been developed and operated independently. However, the user is limited to being provided with various services, and for a different kind of image information service, a separate system should be further provided, which causes inconvenience in installation and operation.

Accordingly, an object of the present invention is to provide a video communication system for providing various services by integrating various types of video information into one system.

The video communication system according to the present invention for achieving the above object,

A CATV system for receiving an RF signal through an antenna, converting the signal into a baseband video signal, and distributing and amplifying the video signal and the audio signal to supply public broadcasting and satellite broadcasting signals; A VRS system having a database of a plurality of moving images, still images, and audio information for supplying image information and audio information according to a user's request; CCTV system for monitoring the situation in a certain area through the camera image information; A video conferencing system for allowing a plurality of users to conduct a meeting while watching the other party through a TV screen; A plurality of terminal devices connected to the one systems to perform their own functions or connected to the plurality of systems to perform various functions; And a control method for distributing and managing the signal transmitted from the system to the terminal device in response to a request from the terminal device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows an overall schematic diagram of a video communication system. The video communication system 11 establishes a single network using CATV NETWORK around the broadcasting center, and supports CATV service 12, VRS service 15, CCTV service 13, TV conference service 16 and various conferences. Provide services 14 and support efficient work performance. In addition, it provides a high-quality video and audio by establishing a separate OPTICAL NETWORK instead of CATV NETWORK by using a PC, and provides fast decision making by exchanging data.

2 is a detailed block diagram of a video communication system according to the present invention.

The main controller 20 manages the A / V switch for video / audio signal exchange, the A / V splitting device for screen division by the request of the video conferencing terminal, the data communication with the terminal PC, and the operation state of all systems. A main control unit (HOST COMPUTER) for performing functions such as diagnosis and history management of the system is provided.

CODEC unit 211 converts video and audio signals to T1 LINE using video compression technology for transmission of video information between main controller 20 and external organs. Demodulate the audio signal.

The maintenance unit 213 accesses data necessary for maintenance generated by the main controller unit 20 by a control PC installed at a remote place through a LAN, so that the state of the device can be checked and managed.

The H / E part 24 receives an RF signal through an antenna, converts the RF signal into a baseband video signal, distributes and amplifies the video signal and the audio signal, and uses the video signal and the audio signal for measurement and manual switching.

The optical transmitter 25 converts an electrical signal into a light signal or converts a light signal into an electrical signal to transmit data through an optical cable.

The editing room 21 includes a transmission facility, a photographing facility, a recording facility, an editing facility, and the like, and edits and transmits the data necessary for the video service to the main control unit 20.

The VRS room 22 is equipped with a video card, a still picture file device, an A / V switch control PC, and the like, upon request from each TV conference terminal 28, conference support system 27, VRS dedicated terminal 26, or the like. It provides a video data transmission (VRS) service that provides video and audio data to users by establishing a database of various video (VTR TAPE data), still pictures, and audio information.

The meeting support system 27 may provide information necessary for meetings quickly in order to efficiently conduct meetings in various meeting rooms, and share information among the meeting rooms to create a sense of unity among members.

CCTV system 29 is composed of six subgroups for 24 hours monitoring and screen recording, and the central monitoring room 23 is CCTV system for monitoring and protecting facilities against external invaders within a certain area (especially research institutes, etc.). (29) is operated by CATV NETWORK to manage and operate CCTV system.

The terminal is divided into a CATV terminal, a VRS terminal, a multifunctional terminal 26, and a TV conference terminal 28, which may each receive a unique service or share a common service.

3A to 3E show a data communication system diagram between the respective systems. In order to integrate and control each system, it is possible to provide necessary services in real time by establishing a communication network in the POINT-POINT and MULTI-POINT method centering on the host computer.

Table 1 shows the configuration of data communication used in the system.

FIG. 3a is a diagram of an overall system diagram of data communication of a video communication system, and includes a host computer 311, a VRS system 312, a CATV system 313, a CCTV subcenter 314, a VRS terminal PC 315, It is a system diagram which shows data communication with CATV terminal PC 316, TV conference terminal PC 317, and the like.

Data communication takes place around the host computer 311, and when using another system in one system, it is via the host computer 311. If the service is provided within the system, the results are reported to the host computer so that the host computer can manage the operation of the entire integrated system.

Figure 3b is a diagram of the data communication system of the CATV system, CATV system 321 is composed of a CATV terminal PC and the transmission control unit, often from the CATV terminal PC to the terminal (CATV terminal 322 or multi-function terminal 323) The broadcast is issued and the terminals 322 and 323 process the response thereto.

3C is a diagram of a data communication system diagram of a video conferencing system. The video conferencing system 331 includes a video conferencing control PC, a splitter, an A / V switch, a codec, and the like. Providing the service by the video conferencing system 331 as requested, video conferencing proceeds through the video conferencing terminal 332, and also supports remote video conferencing with the video conferencing system 333 installed at a remote location.

FIG. 3D is a diagram of a data communication system diagram of a VRS system. The VRS system 341 includes a VRS control PC, a video card, a video file, an audio file, and the like. It provides a video service, reports usage status and results to the host computer, and enables the service support system to request a service through the host computer if necessary.

3e is a diagram of a CCTV system data communication system. The CCTV system 351 includes an MCS, a video switch, and a VTR control unit, and collects data from the CCTV subcenter 352 at the request of the central monitoring room 354. After analyzing, the camera 353 is driven and the result is reported to the central monitoring room 354.

4 is a diagram illustrating an interworking diagram between components of a video communication system. In the drawing, the solid line indicates signal data and the dotted line indicates command data is transmitted.

The TV conference system 42 receives a video signal from the video main A / V switch, splits the screen as necessary, and transmits video information to the TV conference terminals 43 or a remote location. And transmits the signal for recording and editing to the CATV system 45, receives the CATV signal from the CATV system 45, exchanges the transmission signal and data of the TV conference room 44 with the TV conference room, H / E unit 41 Send and receive TV conference reception signal and transmission signal.

The CATV system 45 can produce a program on its own, and receives a signal for recording the meeting contents from the TV conference system 42, if necessary, the TV conference system 42, the VRS system 46, and H /. The VRS transmission signal is transmitted to the VRS request data of the E section 41.

The CCTV system 47 monitors the monitoring screen itself, transmits the information to the central monitoring room 48, and transmits the CCTV transmission signal and data to the H / E unit 41.

The H / E unit 41 transmits video information and data between the TV conferencing system 42, the CATV system 45, the VRS system 46, and 47, to each terminal (CATV terminal, VRS terminal, multi-function terminal). , CCTV sub-center) (49) provides the video information requested by the user.

5A to 5F show interlocking diagrams for respective systems of the video integrated system.

Figure 5a is an interlocking diagram of the CATV system, CATV system 511 is capable of interlocking with the TV conferencing system 512 for remote CATV, remote lecture, connection, etc., for transmission and reception of video information and audio information, The VRS system delivers the video tape produced in the editing room of CATV, and the VRS system can be accessed by the terminal. On the other hand, CATV service can be accessed from VRS terminal and TV conference terminal, video signal of TV conference can be edited or recorded in broadcasting center of CATV system, and the surveillance screen of CCTV system can be recorded in editing room, CATV Monitoring is also possible in the H / E department.

5b is an interlocking diagram of a TV conferencing system (PC video conferencing system), and the TV conferencing system 521 may be used in conjunction with an interactive CATV system 522 and a VRS system 525 by forming a separate OPTICAL NETWORK. The main purpose of the conference is a TV conference, and is used in conjunction with the CATV system 522 to edit or record a video source of a TV conference. In addition, the video conference terminal can access the video source of the video and battery image of the VRS, and can be used for multi-purpose in conjunction with the conference support system. In addition, it is also possible to access the CCTV surveillance screen from the TV conference terminal in conjunction with the CCTV system.

FIG. 5C is an interlocking diagram of a VRS system. The VRS system 531 may use an image tape prepared in the CATV editing room 532 as VRS data.

5d is an interlocking diagram of a CCTV system, the CCTV system 541 monitors the inside and outside of the institute in the central monitoring room 545, and the in-lab monitoring in conjunction with the CCTV system 541 in the CATV broadcasting center 544. The situation can be recorded and edited, and the central monitoring room 545 can watch CATV broadcasting (public and satellite broadcasting), and the VRSC video and still images 543 can be accessed.

5e is an interlocking diagram of the conference support system, and various lectures are provided in the CATV broadcasting center 553 in conjunction with the conference support system (TV conference room, conference room, auditorium) 551. Sources such as seminars can be used for recording and editing, and a TV conference terminal and a video conference are also possible in conjunction with the system 554. In addition, each meeting room of the meeting support system 554 can receive all services provided by the CATV 553, the VRS 555, and the CCTV system.

5F is an interworking diagram relating to a LAN system, in which a state of each terminal can be accessed from a LAN terminal 564 in association with a LAN 563 at a CATV broadcasting center, and a TV conference terminal 565 and a VRS dedicated terminal 566. ) May share data with other terminals via the LAN network 563. It is also possible to link with a conference support system (TV meeting room) 561.

Table 2 shows a screen showing the main menu in the host computer operating the video integrated system configured as described above, and the functions when the operator selects each menu will be described in turn.

1. 'System Management' consists of a mode for password registration and modification, a mode for starting the video information system, a mode for shutting down the video information system, and a mode for shutting down the host computer. If Already Running ... appears in the message field, the system is already running.

2. 'Terminal management' is a mode for inputting, inquiring, modifying and deleting information about a video conference terminal, a VRS terminal, a CATV terminal, and a multi-function terminal. The setting information includes the ID number of a simple terminal, the name of each terminal, the group of each terminal required for forced broadcasting, the division of remote and local areas used in the video conference terminal, the type of each terminal, and the multi-party conference in the video conference terminal. Position priority on the screen, input channel of A / V switch in video conference terminal, output channel of A / V switch in video conference terminal, video conference terminal control PC, VRS terminal control PC and CATV terminal control PC LOCK / UNLOCK, VRS terminal, CATV terminal, and multi-function terminal for the POLLING to the terminal, there is a VRS LOCK to enable / disable the moving and still requests.

3. 'Terminal Control' controls communication lock, VRS lock, POWER, CHANNEL, VOLUME, etc. for VRS terminal, CATV terminal and multi-function terminal.

4. 'Forced broadcasting control' starts and ends forced broadcasting, selects the corresponding VTR, single volume, and terminal group, and starts forced broadcasting.

5. 'Video conferencing status' displays information on the terminal currently meeting or the terminal meeting in the past and the start and end date of the meeting.

6. 'Fairy status' indicates information on the current status of the animation or the status of the animation in the past (VTR ID, channel, terminal ID, LIST ID, start time, end time).

7. The 'stopped state' indicates information (channel, terminal ID, LIST ID, start time, end time) for viewing a current still picture or viewing a still picture in the past.

8. 'Forced broadcasting status' indicates information on the current forced broadcasting or the status of forced broadcasting in the past (VTR ID, channel, start time, end time, terminal group).

9. 'All terminal status' displays information about communication lock, VRS lock and communication status of each terminal.

As described above, according to the present invention, various services may be provided as follows.

1. Public and Satellite Broadcasting Retransmission: Provide public and satellite broadcasting (KBS, MBC, SBS, AFKN, NHK broadcasting, etc.) as required by the video communication terminals of certain members in certain areas or buildings.

2. In-house Broadcasting (Self-Broadcasting): The CATV editorial office is in charge of group broadcasting, editing, recording, etc., and forcibly sends emergency notification broadcasting, group broadcasting, and remote lectures to all video communication terminals. Alternatively, the group may perform forced broadcasting or send data on the conference support system.

3. Video DB (VRS): Always use video information such as database of various moving picture, still picture, and audio information built on demand for each TV conference terminal, conference support system, VRS dedicated terminal, etc. Can be.

4.TV meeting (PC video conference): You can request a 1: 1 or 1: multiple conference from the TV conference terminal and proceed with the meeting while watching your own screen, and you can watch TV conference except general broadcasting purpose for general CATV terminal. Security functions can be performed, subscribers can be adjusted for each conference type to maximize conference efficiency, and up to four simultaneous conferences can be provided. In addition, it is possible to remotely conduct TV conferences, which are equipped with TV conference facilities, and to receive in-house broadcasting and retransmission broadcasting.

5. Mobile Broadcasting: Anywhere on the CATV track's OUTLET, the screen can be transmitted to the video center for live broadcasting or recording.

6. Meeting support: Provides information necessary for meetings in order to efficiently conduct meetings in the meeting room by presenting and preparing meeting materials, live broadcasting and recording of the meeting situation, and watching various programs transmitted from the broadcasting center.

Claims (5)

A CATV system for receiving an RF signal through an antenna, converting the signal into a baseband video signal, and distributing and amplifying the video signal and the audio signal to supply public broadcasting and satellite broadcasting signals; A VRS system having a database of a plurality of moving images, still images, and audio information for supplying image information and audio information according to a user's request; CCTV system for monitoring the situation in a certain area through the camera image information; A video conferencing system for allowing a plurality of users to conduct a meeting while watching the other party through a TV screen; A plurality of terminal devices connected to the one systems to perform their own functions or jointly connected to the plurality of systems to perform various functions; And a control device for distributing and managing a signal transmitted from the system to the terminal device in response to a request from the terminal device. The apparatus of claim 1, wherein the control device comprises: an A / V switch for exchanging video signals and audio signals transmitted from the CATV system, the VRS system, the CCTV system, and the video conference system; An A / V splitting apparatus for displaying the screens for a plurality of participants in one screen at the request of the video conference system; And a main control device for managing data communication with the terminal device and an operation state of all the systems. The method according to claim 1, wherein the video signal and the audio signal are converted into a T1 LINE and transmitted using a moving picture compression technique, and the video signal and the audio signal transmitted through the T1 LINE are demodulated to transmit information between the control device and the remote site. And a CODEC means for the video communication system. The video communication system according to claim 1, further comprising maintenance means for accessing data necessary for maintenance generated by the control apparatus at a remote location through a LAN communication network to check and repair the state of the entire system. . The videoconferencing system of claim 1, further comprising optical transmission and reception means for converting an electrical signal into a light signal or an optical signal into an electrical signal to transmit data through an optical cable between the video conferencing terminal devices. Video communication system.