WO2007140668A1

WO2007140668A1 - Method and apparatus for realizing remote monitoring in conference television system

Info

Publication number: WO2007140668A1
Application number: PCT/CN2006/003649
Authority: WO
Inventors: Jinghai Chen; Jian Weng; Jun Meng; Zheng Ma; Rongxian Chen
Original assignee: Zte Corporation
Priority date: 2006-06-08
Filing date: 2006-12-28
Publication date: 2007-12-13
Also published as: CN101087398A; CN101087398B

Abstract

A method for realizing remote monitoring in conference television system is disclosed, which includes: a monitored terminal which picture need be displayed is selected on a console of the multi-point control unit, and the console of the multi-point control unit transmits the display command information to the multi-point control unit; the multi-point control unit is communicated with the monitored terminal, and transmits the digital media stream of the monitored terminal to the console of the multi-point control unit in manner of the independent video or the multi-path video mixing; and after decoding, the picture of the monitored terminal is presented in manner of the independent video combination or the multi-path video mixing by the console of the multi-point control unit. An apparatus for realizing remote monitoring in conference television system is also disclosed. By using the method and apparatus of the invention, multiple terminal meeting places can be monitored in real time in the console of the MCU, and FECC control for the monitored terminal can be performed in real time, it is useful for the large-scale conference television of the army and the armed police.

Description

Method and device for realizing remote monitoring in conference television system

Technical field

The present invention relates to the field of conference television systems, and in particular, to a remote monitoring method and apparatus capable of controlling a monitored terminal in a conference television system.

Background technique

In the existing conference television system, remote monitoring is realized in an end-to-end manner. There are two basic forms based on the number of communicating entities:

1. Two conference TV terminals point-to-point communication, which can be far away from each other's cameras.

2. A plurality of conference television terminals participate in a multipoint conference on the MCU (Multipoint Control Unit, "MCU"), and there is a remote token in the entire conference; the terminal having the remote token can be The terminal it sees is remotely controlled, and can also be remotely controlled by its video source terminal. Other terminals cannot perform remote control.

The far-reaching of these two methods is actually that one terminal can only be far away from another terminal, and cannot be far away from other terminals at the same time.

At the same time, one terminal can only see one remote image sent by the MCU at the same time in the conference. Even if there are dual streams and multiple pictures, it is limited to the codec capability of the MCU. The number of terminal sites that can be seen on the terminal is also limited.

In the military and armed police conference television systems, there is often such a need: it is necessary to monitor the multi-channel terminal image on the MCU console, and can perform FECC on the monitored terminal (Far End Camera Control, Far End Camera Control, referred to as "abbreviation"). FECC") control. Summary of the invention

The technical problem to be solved by the present invention is to provide a method and device for realizing remote monitoring in a conference television system, which can solve the problem that the multipoint conference in the traditional conference television system can only achieve end-to-end distance, and the number of monitoring sites on the terminal is limited. The problem. .

1 180600151. In order to solve the above problems, the present invention provides a method for implementing remote monitoring in a conference television system, including:

Step 1: selecting a monitored terminal that needs to display a screen on the multi-point control unit console, and the multi-point control unit console sends the display command information to the multi-point control unit;

Step 2: The multi-point control unit communicates with the monitored terminal, and sends the digital media stream of the monitored terminal to the multi-point control unit console in a manner of independent video or multi-channel video mixing; Step 3: The multi-point control After the unit console is decoded, the monitored terminal screen is presented in a separate video combination or a multi-channel video mixing manner.

Further, the foregoing method may further have the following features: In the step 1, the multi-point control unit communicates with the monitored terminal by using one of three protocols: H320 protocol, H323 protocol, and SIP protocol.

Further, the above method may further have the following features: In the step 3, after the multi-point control unit console decodes, the video is displayed using a web page.

Further, the foregoing method may further have the following features: the multi-point control unit console performs remote control on the monitored terminal, including:

Step A, the multi-point control unit console sends a remote command of the corresponding terminal of the monitored screen to the multi-point control unit;

Step B: The multipoint control unit forwards the remote command to the corresponding terminal. Step C, 'The corresponding terminal performs corresponding control on the terminal camera according to the remote command.

Further, the foregoing method may further have the following features: In the step B, the multipoint control unit forwards the remote command to the corresponding terminal in one of two ways:

In the first mode, during the interaction between the multipoint control unit and the corresponding terminal, the multipoint control unit and the terminal use a data channel carrying remote telemetry signaling, and the multipoint control unit sends the remote camera control code to the terminal on the data channel;

In the second mode, the multi-point control unit sends a remote command to the terminal by using a control message through the control channel for interactive signaling, and the terminal parses and executes the control message after receiving the control message.

2 180600151. Further, the foregoing method may further have the following features: In the first method, the data channel uses a low speed data channel, a high speed data channel, or a multi-layer protocol channel.

In order to solve the above problems, the present invention further provides an apparatus for implementing remote monitoring in a conference television system, comprising: a multipoint control unit console, a multipoint control unit, and a plurality of monitored terminals; and the multipoint control unit controls The station is connected to the multipoint control unit for selecting the monitored terminal on which the display screen is to be displayed, transmitting the display command information to the multipoint control unit, and transmitting the independent video of the monitored terminal sent back by the multipoint control unit Or after multi-channel video decoding, it is displayed;

The multi-point control unit communicates with the monitored terminal, and sends the digital media stream of the monitored terminal to the multi-point control unit console in a manner of independent video or multi-channel video mixing;

The monitored terminal is configured to record an analog video in real time through a terminal camera, and after receiving the recorded analog video, convert the analog video into a digital media stream and transmit the data to a multipoint control unit.

Further, the foregoing apparatus may further have the following features: the multipoint control unit console is further configured to send a remote command of the monitored screen corresponding terminal to the multipoint control unit; the multipoint control unit is further configured to: Forwarding the remote command to the corresponding terminal; the corresponding terminal is further configured to perform corresponding control on the terminal camera according to the remote command.

Further, the above apparatus may further have the following features: The multipoint control unit and the terminal use a data channel carrying remote telemetry signaling, and the multipoint control unit transmits a remote camera control code to the terminal on the data channel.

Further, the foregoing apparatus may further have the following feature: the multipoint control unit sends a remote command to the terminal by using a control message through the control channel for the interactive signaling; the terminal parses and executes the received control message. The method and device of the present invention can remotely monitor multiple terminal sites in real time on the MCU console, and can perform FECC control on the monitored terminals in real time, especially for large conference television systems such as military and armed police.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural diagram of a networking of an embodiment of the present invention;

3 180600151. 2 is a flow chart of a conference television system MCU transmitting a media stream of a monitored terminal to an MCU console according to an embodiment of the present invention;

3 is a flow chart of the conference television system remotely monitoring the terminal on the MCU console in the embodiment of the present invention. Preferred embodiment of the invention

In the prior art, the MCU console is externally connected to the TV, and receives the multi-channel analog image uploaded by the MCU, and is directly displayed without decoding, and the decoding point is on the MCU. In the embodiment of the present invention, the MCU is received on the computer where the MCU console is located. The uploaded digital image is displayed on the WEB page after decoding, and the decoding point is on the MCU console.

The embodiment of the present invention is different from the remote control point of the prior art, and the prior art is implemented on the conference television terminal; the present invention is implemented on the MCU console.

The prior art uses a far-away token, in essence, only the terminal that has obtained the token can be far away, and can only be far away from the terminal that it sees; the embodiment of the present invention does not have this limitation, as long as it can be viewed on the MCU console. To the image of several terminal sites, remote control of the corresponding terminal sites can be performed separately. '

The far-distance channel between the MCU and the terminal can be used to carry the data channel for remote signaling as well as the control channel for interactive signaling, but the remote command should be sent through the non-standard control message encapsulation. .

The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments. .

Figure 1 depicts a simple network diagram of a conference television system. The conference television system in the figure is composed of an MCU console 101, an MCU 102 and a plurality of conference television terminals 103, 104. The MCU console 101 is connected to the MCU 102 for selecting a monitored terminal on which a display screen is to be displayed, and the display command is displayed. The information is sent to the MCU 102, and the independent video or multi-channel video of the conference television terminals 103, 104 sent back by the MCU 102 is decoded, and displayed; after receiving the command from the MUC console 101, the MCU 102 selects The terminals 103, 104 communicate, and the digital media streams of the terminals 103, 104 are sent to the multipoint control unit console in a separate video or multi-channel video; the terminals 103, 104 are used to pass the terminal camera (not shown) Show) 'Real-time recording

4 180600151. The analog video is converted and converted to a digital media stream for transmission to the MCU 102.

The VICU console 101 is further configured to deliver a remote command of the monitored screen corresponding terminal to the MCU 102; the 102 is further configured to forward the remote command to the corresponding terminal 103, 104; The corresponding terminals 103 and 104 are further configured to perform corresponding control on the terminal camera (not shown) according to the remote command.

The protocols for communication between the MCU 102 and the conference television terminals 103 and 104 include, but are not limited to, H320 (Narrow-band visual telephone systems and terminal equipment), H323 (Packet-based multimedia communications system), and SIP (Session Initiation Protocol). .

2 is a flow chart of the MCU of the conference television system transmitting the monitored terminal media stream to the MCU console according to the present invention. The main process includes the following steps:

Step 201: Select a monitored terminal on the MCU console of the conference television system, and notify the MCU;

Step 202: The MCU communicates with the monitored terminal, and sends the media stream of the monitored terminal to the MCU console in an independent video or multi-channel video mixing manner;

Step 203: The MCU controls the station to display the monitored terminal screen in an independent video combination or a multi-channel video mixing manner, which may be displayed on the interface.

Fig. 3 is a flow chart showing the remote control of the conference television system on the MCU console of the present invention. The main process includes the following steps:

Step 301. Select a monitored screen on the MCU console, and send the remote command to the MCU corresponding to the final dock;

Step 302: After receiving the remote command sent by the MCU console, the MCU forwards the remote command to the corresponding terminal.

The MCU sends a remote command to the terminal in one of two ways:

In the mode 1, during the interaction between the MCU and the terminal, the MCU and the terminal open a data channel carrying the remote signaling, and the data channel may be an LSD (Low-Speed Data) channel or an HSD (High-Speed Data) channel. MLP (Multilayer Protocol) channel, the MCU sends an FECC code to the terminal on the data channel. This way for each manufacturer

5 180600151. The conference TV terminal can be far away, and it is more general.

Mode 2: The MCU sends a remote command to the terminal through a customized non-standard control message, and the terminal parses and executes after receiving the message. In this way, the terminal and the MCU need to negotiate non-standard far-reaching messages, which can only be used for the terminal of the manufacturer.

In an application example of this embodiment, on the H245 control channel, the remote data is carried by the H245 non-standard message, and the terminal is required to be identified and parsed.

Customize a remote data identifier, such as "1 3 6 1 4 1 3902 3002 ", with telemetry data, using the command.nonStandard.nonStandardData.data field 7 .

The corresponding part of the H245 protocol refers to:

CommandMessage :;=CHOICE

{

Nonstandard NonStandardMessage,

}

NonStandardMessage :: -SEQUENCE

{

nonStandardData NonStandardParameter,

} .

NonStandardParameter ::=SEQUENCE

{

nonStandardldentifier NonStandardldentifier,

Data OCTET STRING

}

NonStandardldentifier :: -CHOICE

{

6 180600151. Object OBJECT IDENTIFIER.

h221NonStandard SEQUENCE

{

t35CountryCode INTEGER (0..255), -- country, per T.35 Annex A

t35Extension INTEGER (0..255),

― assigned nationally unless t35ConntryCode is binary

- 1111 1111, in which case it shall contain the country code

― according to T.35 Annex B

manufacturerCode INTEGER (0..65535) -- assigned nationally }

}

Step 303: After receiving the remote command, the terminal performs corresponding control on the terminal camera, such as the camera up, down, left, and right, zoom "-", zoom "+", aperture "+", aperture"- " Wait.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made in accordance with the present invention are covered by the scope of the present invention.

Industrial Applicability The method and device of the present invention can remotely monitor multiple terminal sites in real time on the MCU console, and can perform FECC control on the monitored terminals in real time, which is very useful for large-scale conference television systems such as military and armed police. .

7 180600151.

Claims

Claim

A method for implementing remote monitoring in a conference television system, comprising: step 1: selecting a monitored terminal that needs to display a screen on a multi-point control unit console, and displaying the display by a multi-point control unit console Command information is sent to the multipoint control unit;

Step 2: The multi-point control unit communicates with the monitored terminal, and sends the digital media stream of the monitored terminal to the multi-point control unit console in a manner of independent video or multi-channel video mixing;

Step 3: After the multi-point control unit console decodes, the monitored terminal screen is presented in an independent video combination or a multi-channel video mixing manner.

The method according to claim 1, wherein in the step 1, the multipoint control unit communicates with the monitored terminal by using one of three protocols: H320 protocol, H323 protocol, and SIP protocol.

The method according to claim 1, wherein in the step 3, after the multi-point control unit console decodes, the video is displayed using a web page.

The method according to any one of claims 1 to 3, wherein the multi-point control unit console performs remote control on the monitored terminal, including

Step B: The multipoint control unit forwards the remote command to the corresponding terminal. Step (: The corresponding terminal performs corresponding control on the terminal camera according to the remote command.

The method according to claim 4, wherein in the step B, the multipoint control unit forwards the remote command to the corresponding terminal in one of two ways: During the interaction between the multi-point control unit and the corresponding terminal, the multi-point control unit and the terminal use the data channel carrying the far-distance signaling, and the multi-point control unit sends the remote camera control code to the terminal on the data channel;

8 180600151.

The method according to claim 5, wherein in the first mode, the data channel uses a low speed data channel, a high speed data channel or a multi-layer protocol channel.

7. A device for implementing remote monitoring in a conference television system, comprising: a multipoint control unit console, a multipoint control unit, and a plurality of monitored terminals;

The multi-point control unit console is connected to the multi-point control unit for selecting a monitored terminal on which a display screen is to be displayed, transmitting the display command information to the multi-point control unit, and transmitting the multi-point control unit After the independent video or multi-channel video of the monitored terminal is decoded, it is displayed;

The multi-point control unit communicates with the monitored terminal, and sends the digital media stream of the monitored terminal to the main multi-point control unit console in a manner of independent video or multi-channel video mixing;

The monitored terminal is configured to record the analog video in real time through the terminal camera, and after receiving the recorded analog video, convert the analog video into a digital media stream and transmit it to the multi-point control unit.

The apparatus according to claim 7, wherein the multipoint control unit console is further configured to send a remote command of the monitored screen corresponding terminal to the multipoint control unit; The unit is further configured to forward the remote command to the corresponding terminal; the corresponding terminal is further configured to perform corresponding control on the terminal camera according to the remote command.

9. The apparatus according to claim 8, wherein the multipoint control unit and the terminal use a data channel carrying remote telemetry, and the multipoint control unit transmits the remote camera control code to the terminal on the data channel.

The device according to claim 8, wherein the multipoint control unit sends a remote command to the terminal by using a control message through a control channel for interactive signaling; the terminal receives the control message Parse and execute.

9 180600151.