WO2012041028A1 - Method, correlative equipment and system for bidirectional hybrid fiber-coaxial (hfc) network based video conference - Google Patents

Abstract

A method, correlative equipment and system for bidirectional Hybrid Fiber-Coaxial (HFC) network based video conference are provided, wherein, the method for bidirectional HFC network based video conference includes that: a video conference controller receives a conference media stream parameter, and sends a first control signaling carrying the conference media stream parameter to a video transcoding server; the video conference controller receives a transport stream parameter, and sends a second control signaling carrying the transport stream parameter to a digital television receiving terminal through the bidirectional HFC network, so that the digital television receiving terminal, according to the transport stream parameter and through the bidirectional HFC network, receives transport streams processed by an edge modulator, and executes parsing and play. The technical solutions in the present invention can effectively solve the problem of not enough transport bandwidth in a video conference system, caused by providing multiple paths videos or high definition video conference, and meet higher requirement of users for the video conference system.

Description

 Video conference method based on two-way HFC network and related equipment and system

 This application claims priority to Chinese Patent Application No. 201010503269.3, entitled "Video Conference Method Based on Two-Way HFC Network and Related Equipment and Systems", submitted to the Chinese Patent Office on September 30, 2010. The citations are incorporated herein by reference. Technical field

 The present invention relates to the field of communications, and in particular, to a video conferencing method and related device and system based on a bidirectional HFC network.

Background technique

 With the popularization of video conferencing system applications and the development of network technologies, users' requirements for video conferencing systems will be more comprehensive and deeper. Therefore, based on the basic functions of video conferencing systems, video conferencing systems should also meet increasingly Increased user requirements, such as an increase in the number of interactive objects in video conferencing, and improved video quality, are also requirements for further improvement of the technical conditions required to implement a video conferencing system. Under better technical conditions, video conferencing In order to provide better audio and video interactive services, the promotion of video conferencing system applications can be further promoted.

 The traditional video conferencing system is based on the H.323 protocol. Although the technology is mature, the dependence on the dedicated network and the dedicated hardware device is relatively strong, which is not conducive to the popularity of the video conferencing application. The current video conferencing system usually The Session Initiation Protocol (SIP), which is developed by the Internet Engineering Task Force (IETF), usually uses an Asymmetric Digital Subscriber Line (ADSL) access method. It can realize various functions of H.323, and has the advantages of protocol package and strong scalability.

 However, the inventor found that although the video conferencing system using the ADSL access method can support its normal application, with the popularization of the video video conferencing system application and the development of the network technology, its limited transmission bandwidth cannot meet the increasing user demand. The need, therefore, is necessary for the transformation of the video conferencing system.

Summary of the invention

 The embodiment of the invention provides a video conferencing method and a related device and system based on a bidirectional HFC network, which are used to solve the problem of insufficient transmission bandwidth caused by providing multi-channel video or high-definition video conference in a video conference system. At the same time, it meets the higher demand of users for video conferencing systems.

To solve the above technical problem, the embodiment of the present invention provides the following technical solutions: A video conferencing method based on a bidirectional HFC network, comprising:

 The video conference controller obtains the conference media stream parameter;

 Transmitting, by the video transcoding server, the first control signaling that carries the parameters of the conference media stream, so that the video transcoding server transcodes the received conference media stream into a transport stream according to the conference media stream parameter, and sends the packet to the edge modulation. Device

 The video conference controller obtains a transport stream parameter;

 Transmitting, by the bidirectional HFC network, the second control signaling carrying the foregoing transport stream parameter to the digital television receiving terminal, so that the digital television receiving terminal receives the transport stream processed by the edge modulator through the bidirectional HFC network according to the transport stream parameter, And parsing and playing.

 A video conference control device includes:

 a first acquiring unit, configured to acquire a conference media stream parameter;

 a first sending unit, configured to send, to the video transcoding server, first control signaling that carries the parameter of the conference media stream, so that the video transcoding server transcodes the conference media stream received by the video transcoding server according to the conference media stream parameter to Transmit the stream and send it to the edge modulator;

 a second acquiring unit, configured to acquire a transport stream parameter;

 a second sending unit, configured to send, by using a bidirectional HFC network, a second control signaling that carries the foregoing transport stream parameter to the digital television receiving terminal, so that the digital television receiving terminal receives the edge modulation through the bidirectional HFC network according to the foregoing transport stream parameter The processed transport stream is processed and parsed and played.

 A video conferencing system based on a two-way HFC network, comprising:

 Video conferencing controller, video transcoding server, edge modulator;

 The video conference controller is configured to obtain the conference media stream parameter, and send, to the video transcoding server, the first control signaling that carries the conference media stream parameter, so that the video transcoding server is configured according to the conference media stream parameter. The received conference media stream is transcoded into a transport stream and sent to the edge modulator; the transport stream parameter is obtained; and the second control signaling carrying the transport stream parameter is sent to the digital television receiving terminal through the bidirectional HFC network, so as to facilitate the digital television receiving. Receiving, by the terminal, the transport stream processed by the edge modulator through the bidirectional HFC network according to the foregoing transport stream parameter, and performing parsing and playing;

a video transcoding server, configured to transfer the received conference media according to the foregoing conference media stream parameter The code is transmitted to the edge modulator after being transmitted to the edge;

 And an edge modulator, configured to send the processed transport stream to the digital television receiving terminal, so that the digital television receiving terminal receives the transport stream through the bidirectional HFC network according to the transport stream parameter, and performs parsing and playing.

 In the embodiment of the present invention, the conference media stream parameter and the transport stream parameter in the video conference are obtained by the video conference controller, and the foregoing transport stream parameter is sent to the digital television receiving terminal, so that the digital television receiving terminal can receive the corresponding according to the foregoing transport stream parameter. The transport stream sent by the edge modulator is parsed and played. On the one hand, this video conferencing method extends the application of the digital television receiving terminal. On the other hand, the bidirectional fiber-coaxial cable (HFC, Hybrid Fiber - Coaxial) The high-quality transmission performance of the network provides a more stable and reliable video conference for the user. At the same time, in the embodiment of the present invention, the conference media stream is sent to the digital television receiving terminal through the edge modulator, which saves the bandwidth of the HFC bidirectional channel. In summary, the video conference method based on the bidirectional HFC network provided by the embodiment of the present invention can effectively solve the problem of insufficient transmission bandwidth caused by providing multi-channel video or high-definition video conference in the video conference system, and at the same time, satisfy The user has higher demand for video conferencing systems.

DRAWINGS

 In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description For some embodiments of the present invention, other drawings may be obtained from those skilled in the art without departing from the drawings.

 FIG. 1 is a schematic diagram of a network topology structure of a video conference method based on a bidirectional HFC network according to an embodiment of the present disclosure;

 2 is a schematic flowchart of a video conference method based on a bidirectional HFC network according to an embodiment of the present invention;

 3 is a schematic flowchart of another video conference method based on a bidirectional HFC network according to an embodiment of the present invention;

 FIG. 4 is a schematic structural diagram of a video conference control device according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of a video conference system based on a bidirectional HFC network according to an embodiment of the present invention.

detailed description The embodiment of the invention provides a video conference method based on a bidirectional HFC network, which is used to solve the problem of insufficient transmission bandwidth caused by providing multi-channel video or high-definition video conference in a video conference system, and at the same time, satisfying the user Higher demand for video conferencing systems.

 The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. The embodiments are merely a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

 With the promotion of triple play and the maturity of its technology, triple play will inevitably become the development trend of modern information technology convergence. The inventor found in the research process that if the function of the digital TV receiving terminal is extended, the existing two-way HFC network is used to realize the video conference, which can not only improve the transmission rate and network utilization of the media stream in the video conference, but also provide the user with the video transmission rate. More stable and reliable video conferencing. On the other hand, the two-way HFC network has higher network bandwidth, which can provide users with high-definition video conferencing, and can support more user terminals to join the video conference to meet the user's video conferencing. The higher demand of the system, in the era of modern information technology convergence, video conferencing based on two-way HFC network will inevitably become a development trend in the future.

Referring to FIG. 1 , FIG. 1 is a schematic diagram of a network topology structure of a video conference method based on a bidirectional HFC network according to an embodiment of the present invention, where a video conference controller can be deployed in a bidirectional HFC network (mainly responsible for bidirectional through HFC). Channel transmission video conference signaling and control signaling), video transcoding server (mainly responsible for transcoding the conference media stream received from the IP network or the bidirectional HFC network) and edge modulator (mainly responsible for transcoding from the video) After the transport stream sent by the device is processed by multiplexing, modulation, etc., and sent to the digital television receiving terminal through a unidirectional channel, the digital television receiving terminal can interact with the video conference controller through the HFC bidirectional channel, and The conference media stream extracted from the peripherals such as the microphone and the camera connected thereto can be sent through an Internet Protocol (IP) network or a two-way HFC network. The technical solution of the embodiment of the present invention can be implemented under the network topology structure as shown in FIG. 1. Among them, the digital TV receiving terminal can be upgraded by software and hardware, the corresponding communication module, the two-way communication interface and the conference session client are added, and the necessary conference session peripherals (such as a microphone, a camera, etc.) can be added to make it satisfy. Basic hardware and software requirements for conference sessions. A video conferencing method based on a bidirectional HFC network is described in the following embodiments of the present invention. Referring to FIG. 2, an embodiment of the present invention includes:

 201. The video conference controller obtains a conference media stream parameter.

 Before the video conference controller obtains the conference media stream parameter, the conference television stream pre-received or pre-transmitted by the digital television receiving terminal in the bidirectional HFC network through the video conference signaling between the digital television receiving terminal and the video conference server (eg, The parameters of audio, video information, etc. are negotiated.

 In an application scenario, the video conference controller may obtain the conference media stream parameter by acquiring and parsing the video conference signaling, or may receive the third control packet that carries the conference media stream parameter sent by the digital television receiving terminal. To obtain the media stream parameters of the conference, there is no limitation here.

 The conference media stream parameter may include one of an IP address of the source digital television receiving terminal, an IP address of the target digital television receiving terminal, a protocol type, a port number of the source digital television receiving terminal, and a port number of the target digital television receiving terminal or A variety.

 The above video conference signaling may be implemented by using a Session Initiation Protocol (SIP), a two-way constructed by a Cable Modem Termination System (CMTS) and a Cable Modem (CM) in a bidirectional HFC network. The channel is used for transmission, or may be transmitted through the bidirectional channel constructed by the EOC (Ethernet over Coax) and the EOC terminal through the Ethernet data in the bidirectional HFC network, which is not limited herein.

 202. The video conference controller sends, to the video transcoding server, first control signaling that carries the parameters of the conference media stream.

 After obtaining the conference media stream parameter, the video conference controller may send, to the video transcoding server, first control signaling that carries the conference media stream parameter, so that the video transcoding server receives the conference media stream parameter according to the conference media stream parameter. The conference media stream is transcoded into a transport stream, and then transcoded and sent to the edge modulator.

 It can be understood that when the video transcoding server receives the conference media stream, it can be transcoded into a transport stream with an IP header (such as a Transport Stream over IP, ie, a TS over IP stream) according to the media stream parameter. It is sent to the edge modulator for subsequent processing by the edge modulator.

 203. The video conference controller acquires a transport stream parameter.

Since a fixed frequency point is usually used in a video conference to transmit a transport stream (such as a TS stream) In the video conferencing system, the frequency information of different video conferences is usually different. Therefore, before the video conference starts, it is necessary to determine the transmission stream parameters of the video conference (including frequency, conference information, etc.).

 The video conference controller may obtain the transport stream parameters by negotiating with the frequency management device, or may be preset of the transport stream parameters of the video conference controller before the start of the video conference, which is not limited herein.

 In an application scenario, after the video conference controller obtains the foregoing transport stream parameter, the fourth control signaling that carries the foregoing transport stream parameter may be sent to the edge modulator, so that the edge modulator receives the transport stream parameter according to the transport stream parameter. The transport stream with the IP header sent by the video transcoding server (such as the TS over IP stream) is processed accordingly, and then sent to the corresponding digital television receiving terminal according to the IP report. Of course, the video conference controller may not The edge modulator sends the fourth control signaling, and the edge modulator can obtain the transmission stream parameter by negotiating with the frequency management device, which is not limited herein.

 204. The video conference controller sends, to the digital television receiving terminal, a second control signaling that carries the foregoing transport stream parameter.

 After obtaining the transport stream parameter, the video conference controller may send, by using the bidirectional HFC network, the second control signaling that carries the foregoing transport stream parameter to the digital television receiving terminal, so that the digital television receiving terminal passes the bidirectional HFC network according to the foregoing transport stream parameter. After receiving the transport stream processed by the edge modulator, it is parsed and played.

 It can be understood that there is a unidirectional channel (such as a broadcast channel) between the edge modulator and the digital television receiving terminal, and the edge modulator can send the processed transport stream to the received transport stream after processing the received transport stream. The above digital television receiving terminal can save the bandwidth of the HFC bidirectional channel.

It should be noted that the foregoing control signaling may be control signaling based on Real Time Streaming Protocol (RTSP) or other protocols, and the above digital television receiving terminal may be a set top box, or a network protocol television, or a digital television. The all-in-one, or other terminal that can implement the above video conference method, is not limited herein; during the video conference, the digital television receiving terminal can also send the audio and video information extracted by the camera and the microphone connected thereto. For example, audio and video information extracted by the camera and the microphone can be transmitted through a Real-time Transport Protocol (RTP). It can be understood that the above video conference controller can be integrated in various switches, routers or digital television receiving terminals, or can be separate devices, which can simultaneously be multiple digital television receiving terminals, video transcoding servers or edge modulation. The device provides services; the above video transcoding server and edge modulator can be integrated in one device, or can be separated into separate devices, and can also provide services for multiple digital television receiving terminals.

 It can be seen that, in the embodiment of the present invention, the conference media stream parameter and the transport stream parameter in the video conference are obtained by the video conference controller, and the foregoing transport stream parameter is sent to the digital television receiving terminal, so that the digital television receiving terminal can transmit according to the foregoing. The stream parameter receives the corresponding transport stream sent by the edge modulator and parses and plays it. On the one hand, the video conferencing method extends the application of the digital television receiving terminal, and on the other hand, the transmission of the bidirectional fiber-coax cable HFC network The feature can provide a more stable and reliable video conference for the user. At the same time, in the embodiment of the present invention, the conference media stream is sent to the digital television receiving terminal through the edge modulator, which saves the bandwidth of the HFC bidirectional channel. In summary, the video conference method based on the bidirectional HFC network provided by the embodiment of the present invention can effectively solve the problem of insufficient transmission bandwidth caused by providing multi-channel video or high-definition video conference in the video conference system, and at the same time, satisfy The user has higher demand for video conferencing systems.

 For a better understanding of the technical solution of the embodiment of the present invention, the video conference method based on the bidirectional HFC network in the embodiment of the present invention is described in detail below. Referring to FIG. 3, the video conference based on the bidirectional HFC network in the embodiment of the present invention is provided. Another embodiment of the method includes:

 301. The digital television receiving terminal negotiates a conference media stream parameter with the video conference server by using video conference signaling.

 When the digital television receiving terminal joins the video conference system, it needs to negotiate parameters of the pre-received or pre-transmitted conference media stream with the video conference server, and the digital television receiving terminal can interact with the video conference server to exchange video conference control signaling. Negotiation meeting media stream parameters. The video conference signaling can be transmitted through the bidirectional channel constructed by the CMTS and the CM by using the SIP protocol, or can be transmitted through the bidirectional channel constructed by the EOC and the EOC terminal, which is not limited herein.

 The conference media stream parameter may include one of an IP address of the source digital television receiving terminal, an IP address of the target digital television receiving terminal, a protocol type, a port number of the source digital television receiving terminal, and a port number of the target digital television receiving terminal. Or a variety.

302. The video conference controller obtains a conference media stream parameter. In an application scenario, the video conference controller may obtain the conference media stream parameter by acquiring and parsing the video conference signaling, or may receive the third control that carries the conference media stream parameter sent by the digital television receiving terminal. The signaling is used to obtain the parameters of the conference media stream, which is not limited herein.

 303. The video conference controller sends, to the video transcoding server, first control signaling that carries the parameters of the conference media stream.

 After obtaining the conference media stream parameter, the video conference controller may send the first control signaling carrying the conference media stream parameter to the video transcoding server, so that the video transcoding server performs corresponding processing according to the conference media stream parameter.

 304. The video conference controller obtains a transport stream parameter.

 Since a video conference usually uses a fixed frequency point for transmission of a transport stream (such as a TS stream), in a video conference system, frequency information of different video conferences is usually different, so before the video conference starts , you need to determine the transport stream parameters of the video conference (which can include frequency points, conference information, etc.).

 The video conference controller may obtain the transport stream parameters by negotiating with the frequency management device, or may be preset of the transport stream parameters of the video conference controller before the start of the video conference, which is not limited herein.

 In an application scenario, after the video conference controller obtains the foregoing transport stream parameter, the fourth control signaling that carries the foregoing transport stream parameter may be sent to the edge modulator, so that the edge modulator receives the transport stream parameter according to the transport stream parameter. The transport stream with the IP header sent by the video transcoding server (such as the TS over IP stream) is processed accordingly, and then sent to the corresponding digital television receiving terminal according to the IP report. Of course, the video conference controller may not The edge modulator sends the fourth control signaling, and the edge modulator can obtain the transmission stream parameter by negotiating with the frequency management device, which is not limited herein.

 305. The video conference controller sends, to the digital television receiving terminal, a second control signaling that carries the foregoing transport stream parameter.

After obtaining the transport stream parameters, the video conference controller may send the second control signaling that carries the foregoing transport stream parameters to the digital television receiving terminal through the bidirectional HFC network, so that the digital television receiving terminal performs corresponding processing according to the transport stream parameters. 306. The video transcoding server processes the received conference media stream.

 When the video transcoding server receives a conference media stream (such as audio, video information, etc.) sent by the peer (such as a video conference server or one or more digital television receiving terminals or other conference terminals, etc.), the video The transcoding server may convert the received conference media stream into a transport stream with an IP header (such as a TS over IP stream) according to the foregoing conference media stream parameter.

 307. The video transcoding server sends the foregoing transport stream with an IP header to the edge modulator; the transport stream is sent to the edge modulator for subsequent processing by the edge modulator.

 308. The edge modulator processes the received transport stream with an IP header.

 When the edge modulator receives the above transport stream with an IP header (such as a TS over IP stream), it can perform corresponding processing (such as multiplexing, modulation, etc.) according to the specified transport stream parameters, and remove its IP header. , forming a corresponding transport stream (such as a TS stream).

 It can be understood that the edge modulator can obtain the foregoing transport stream parameter from the fourth control signaling sent by the video conference controller, or can obtain the transport stream parameter by negotiating with the frequency point management device, where not limited.

 309. The edge modulator sends the processed transport stream to the digital television receiving terminal.

 The edge modulator transmits the processed transport stream to the corresponding digital television receiving terminal according to the IP header.

 It can be understood that there is a unidirectional channel (such as a broadcast channel) between the edge modulator and the digital television receiving terminal, and the edge modulator can transmit the above-mentioned transport stream to the corresponding digital television receiving terminal through the channel, thereby saving the HFC bidirectional channel. Bandwidth.

 310. The digital television receiving terminal receives the corresponding transport stream, and parses and plays the same; the digital television receiving terminal receives the transport stream according to the acquired transport stream parameter, and parses and plays the received transport stream.

It should be noted that the foregoing control signaling may be control signaling based on RTSP or other protocols, and the foregoing digital television receiving terminal may be a set top box, or a network protocol television, or a digital television integrated machine, or may be implemented by others. The terminal of the video conference method is not limited herein; during the video conference, the digital television receiving terminal may also send the audio and video information extracted by the camera and the microphone connected thereto, for example, the sound extracted by RTP. Video information is sent out. It can be understood that the above video conference controller can be integrated in various switches, routers or digital television receiving terminals, or can be separate devices, which can simultaneously be multiple digital television receiving terminals, video transcoding servers or edge modulation. The device provides services; the above video transcoding server and edge modulator can be integrated in one device, or can be separated into separate devices, and can also provide services for multiple digital television receiving terminals.

 It can be seen that, in the embodiment of the present invention, the conference media stream parameter and the transport stream parameter in the video conference are obtained by the video conference controller, and the foregoing transport stream parameter is sent to the digital television receiving terminal, so that the digital television receiving terminal can transmit according to the foregoing. The stream parameter receives the corresponding transport stream sent by the edge modulator and parses and plays it. On the one hand, the video conferencing method extends the application of the digital television receiving terminal, and on the other hand, the transmission of the bidirectional fiber-coax cable HFC network The feature can provide a more stable and reliable video conference for the user. At the same time, in the embodiment of the present invention, the conference media stream is sent to the digital television receiving terminal through the edge modulator, which saves the bandwidth of the HFC bidirectional channel. In summary, the video conference method based on the bidirectional HFC network provided by the embodiment of the present invention can effectively solve the problem of insufficient transmission bandwidth caused by providing multi-channel video or high-definition video conference in the video conference system, and at the same time, satisfy The user has higher demand for video conferencing systems.

 A video conference control device for implementing the video conference method described above is described. Referring to FIG. 4, a video conference control device according to an embodiment of the present invention includes:

 The first obtaining unit 401 is configured to acquire a conference media stream parameter.

 Before the first obtaining unit 401 acquires the conference media stream parameter, the conference television stream pre-received or pre-transmitted by the digital television receiving terminal in the bidirectional HFC network by the video conference signaling between the digital television receiving terminal and the video conference server ( Negotiate parameters such as audio, video information, etc.

 In an application scenario, the first obtaining unit 401 may include:

 Sub-acquisition unit and parsing unit;

 The sub-acquisition unit may be configured to obtain video conference signaling that the digital television receiving terminal and the video conference server interact to negotiate a conference media stream parameter;

 The parsing unit may be configured to parse the video conference signaling to obtain the conference media stream parameter.

The conference media stream parameter may include an IP address of the source digital television receiving terminal, an IP address of the target digital television receiving terminal, a protocol type, a port number of the source digital television receiving terminal, and a target. One or more of the port numbers of the digital television receiving terminal.

 The first sending unit 402 is configured to send, to the video transcoding server, the first control signaling that carries the parameter of the conference media stream.

 After the first obtaining unit 401 obtains the conference media stream parameter, the first sending unit 402 may send, to the video transcoding server, the first control signaling that carries the conference media stream parameter, so that the video transcoding server is configured according to the conference media stream parameter. Transmitting the received conference media stream into a transport stream and sending it to the edge modulator.

 a second obtaining unit 403, configured to acquire a transport stream parameter;

 Since a video conference usually uses a fixed frequency point for transmission of a transport stream (such as a TS stream), in a video conference system, frequency information of different video conferences is usually different, so before the video conference starts , you need to determine the transport stream parameters of the video conference (which can include frequency points, conference information, etc.).

 The second sending unit 404 is configured to send, to the digital television receiving terminal, second control signaling that carries the foregoing transport stream parameter.

 After the second acquisition unit 403 acquires the transport stream parameters, the second sending unit 404 can pass the two-way.

The HFC network sends a second control signaling carrying the foregoing transport stream parameter to the digital television receiving terminal, so that the digital television receiving terminal receives the transport stream processed by the edge modulator through the bidirectional HFC network according to the transport stream parameter, and performs parsing And play.

 In an application scenario, the video conference control device may further include: a third sending unit, where the third sending unit is configured to send, after the second acquiring unit 403 acquires the foregoing transport stream parameter, the carrying the foregoing transport stream to the edge modulator The fourth control signaling of the parameter, so that the edge modulator processes the received transport stream (such as the TS over IP stream) sent by the video transcoding server and sent by the video transcoding server according to the transport stream parameter, According to the IP report, the hair is sent to the corresponding digital television receiving terminal.

 It should be noted that the video conference control device in this embodiment may be used as the video conference controller in the foregoing method embodiment, and may be used to implement all the technical solutions in the foregoing method embodiments, and the functions of the respective functional modules may be according to the foregoing method. The method in the embodiment is specifically implemented. For the specific implementation process, refer to the related description in the foregoing embodiment, and details are not described herein again.

It can be seen that, in the embodiment of the present invention, the first obtaining unit 401 and the second obtaining unit 403 are separated. Obtaining the conference media stream parameter and the transport stream parameter in the video conference, and transmitting the foregoing transport stream parameter to the digital television receiving terminal by using the first sending unit 402, so that the digital television receiving terminal can receive the corresponding edge according to the foregoing transport stream parameter. The transmission stream sent by the modulator is parsed and played. On the one hand, the video conference method implemented by the video conference control device expands the application of the digital television receiving terminal, and on the other hand, the transmission of the bidirectional fiber-coax cable HFC network The feature can provide a more stable and reliable video conference for the user. At the same time, in the embodiment of the present invention, the conference media stream is sent to the digital television receiving terminal through the edge modulator, which saves the bandwidth of the HFC bidirectional channel. In summary, the video conference method based on the bidirectional HFC network implemented by the video conference control device provided by the embodiment of the present invention can effectively solve the transmission bandwidth caused by providing multi-channel video or high-definition video conference in the video conference system. Insufficient problems, at the same time, meet the higher demand for video conferencing systems.

 The following is a description of a video conferencing system based on a bidirectional HFC network provided by the present invention. Referring to FIG. 5, the video conference system may include:

 Video conference controller 501, video transcoding server 502, edge modulator 503;

 The video conference controller 501 can be configured to obtain the conference media stream parameter, and send the first control signaling that carries the conference media stream parameter to the video transcoding server 502, so that the video transcoding server 502 can use the conference media stream parameter according to the conference media stream parameter. The received conference media stream is transcoded into a transport stream and sent to the edge modulator 503; the transport stream parameter is obtained; and the second control signaling carrying the transport stream parameter is sent to the digital television receiving terminal through the bidirectional HFC network, so as to The television receiving terminal receives the transport stream processed by the edge modulator 503 through the bidirectional HFC network according to the foregoing transport stream parameter, and performs parsing and playing;

 Further, the video conference controller 501 can be configured to send the transport stream parameters to the edge modulator 503 after acquiring the transport stream parameters.

 The video transcoding server may be configured to transcode the received conference media stream into a transport stream according to the conference media stream parameter, and send it to the edge modulator 503 through the bidirectional HFC network;

 The edge modulator 503 is configured to send the processed transport stream to the digital television receiving terminal, so that the digital television receiving terminal receives the transport stream through the bidirectional HFC network according to the transport stream parameter, and performs parsing and playing. .

The above-mentioned digital television receiving terminal may be a set top box, or a network protocol television, or a digital television integrated machine, or other terminal capable of implementing the above video conference method, which is not limited herein. The video conference controller 501 in the embodiment of the present invention may be configured as the video conference control device shown in FIG. 4.

 It should be noted that the video conference controller 501 of the embodiment may be the video conference controller in the foregoing method embodiment, and the video transcoding server 502 may be the video transcoding server in the foregoing method embodiment, and the edge modulator 503 may be used. The edge modulator in the foregoing method embodiment may be used to implement all the technical solutions in the foregoing method embodiments, and the functions of the respective functional modules may be specifically implemented according to the method in the foregoing method embodiment, and the specific implementation process may refer to Related descriptions in the above embodiments are not described herein again.

 It can be seen that the video conference system based on the bidirectional HFC network in the embodiment of the present invention acquires the conference media stream parameters and the transport stream parameters in the video conference through the video conference controller 501, and sends the foregoing transport stream parameters to the digital television receiving terminal. So that the digital television receiving terminal can receive the corresponding transport stream sent by the edge modulator 503 according to the above-mentioned transport stream parameters, and perform parsing and playing. On the one hand, the video conferencing system expands the application of the digital television receiving terminal, on the other hand, The transmission performance of the bidirectional optical fiber-coaxial cable HFC network provides users with more stable and reliable video conference. Meanwhile, in the embodiment of the present invention, the conference media stream is sent to the digital television receiving terminal through the edge modulator, which saves HFC. The bandwidth of the bidirectional channel. In summary, the video conference system based on the bidirectional HFC network provided by the embodiment of the present invention can effectively solve the problem of insufficient transmission bandwidth caused by providing multi-channel video or high-definition video conference in the video conference system, and at the same time, satisfy The user's need for a video conferencing system is even greater.

 A person skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium, the above mentioned storage. The medium can be a read only memory, a random access memory, a magnetic disk or an optical disk, and the like.

 The foregoing is a detailed description of a conference management method and related apparatus and system provided by the present invention. For those skilled in the art, the embodiments of the present invention may be changed in specific implementation manners and application scopes. In conclusion, the contents of this specification are not to be construed as limiting the invention.

Claims

Rights request

 A video conference method based on a bidirectional HFC network, comprising: a video conference controller acquiring a conference media stream parameter;

 Transmitting, by the video transcoding server, the first control signaling that carries the parameters of the conference media stream, so that the video transcoding server transcodes the conference media stream received by the video transcoding server into a transport stream according to the conference media stream parameter Giving an edge modulator

 The video conference controller obtains a transport stream parameter;

 Transmitting, by the bidirectional fiber-coax cable HFC network, the second control signaling carrying the transport stream parameter to the digital television receiving terminal, so that the digital television receiving terminal receives the edge through the bidirectional HFC network according to the transport stream parameter The transport stream processed by the modulator is parsed and played.

 2. The method according to claim 1, wherein the obtaining, by the video conference controller, the conference media stream parameters comprises:

 The video conference controller acquires video conference signaling that the digital television receiving terminal and the video conference server interact to negotiate a media stream parameter;

 Parsing the video conference signaling to obtain the conference media stream parameters.

 The method according to claim 1, wherein the obtaining, by the video conference controller, the conference media stream parameters includes:

 The video conference controller receives the third control signaling that is sent by the digital television receiving terminal and carries the conference media stream parameter, and obtains the conference media stream parameter from the third control signaling.

 4. A method according to any one of claims 1 to 3, characterized in that

 The conference media stream parameter includes one or more of the following information:

 The IP address of the source digital television receiving terminal, the IP address of the target digital television receiving terminal, the protocol type, the port number of the source digital television receiving terminal, and the port number of the target digital television receiving terminal.

 The method according to any one of claims 1 to 3, characterized in that

 After the video conference controller obtains the transport stream parameters, the method further includes:

The video conference controller sends a fourth control signaling carrying the transport stream parameter to the edge modulator, so that the edge modulator receives the received signal from the video transcoding server according to the transport stream parameter. After the transport stream with the IP header is processed accordingly, it is sent according to the IP header. A corresponding digital television receiving terminal.

 6. A method according to any one of claims 1 to 3, characterized in that

 The digital television receiving terminal is specifically one of the following:

 Set-top box, network protocol TV, digital TV all-in-one.

 7. A video conference control device, comprising:

 a first acquiring unit, configured to acquire a conference media stream parameter;

 a first sending unit, configured to send, to the video transcoding server, first control signaling that carries the parameter of the conference media stream, so that the video transcoding server receives the conference media that is received according to the conference media stream parameter The streaming code is sent to the edge modulator after being transmitted to the edge stream;

 a second acquiring unit, configured to acquire a transport stream parameter;

 a second sending unit, configured to send, by using a bidirectional HFC network, a second control signaling that carries the transport stream parameter to the digital television receiving terminal, so that the digital television receiving terminal receives the data through the bidirectional HFC network according to the transport stream parameter The transport stream processed by the edge modulator is parsed and played.

 The device according to claim 7, wherein the first obtaining unit comprises: a sub-acquisition unit, configured to acquire a video that the digital television receiving terminal interacts with the video conference server to negotiate a conference media stream parameter Conference signaling

 And a parsing unit, configured to parse the video conference signaling to obtain the conference media stream parameter.

 The device according to claim 7 or 8, further comprising:

 a third sending unit, configured to send, to the edge modulator, fourth control signaling that carries the transport stream parameter, so that the edge modulator transcodes the video received by the edge modulator according to the transport stream parameter After the transport stream with the IP header sent by the server performs corresponding processing, the IP report is sent to the corresponding digital television receiving terminal according to the IP.

 10. A video conferencing system based on a two-way HFC network, comprising: a video conference controller, a video transcoding server, and an edge modulator;

The video conference controller is configured to obtain a conference media stream parameter, and send, to the video transcoding server, first control signaling that carries the conference media stream parameter, so that the video transcoding server is configured according to the conference media stream parameter. Transmitting the received conference media stream into a transport stream and sending it to the edge modulation Obtaining a transport stream parameter; transmitting, by the bidirectional HFC network, a second control signaling carrying the transport stream parameter to the digital television receiving terminal, so that the digital television receiving terminal receives the data through the bidirectional HFC network according to the transport stream parameter The transport stream processed by the edge modulator is parsed and played;

 The video transcoding server is configured to transcode the received conference media stream into a transport stream according to the conference media stream parameter, and send the data to the edge modulator;

 The edge modulator is configured to send, to the digital television receiving terminal, a transport stream processed by the digital television receiving terminal, so that the digital television receiving terminal receives the transport stream through a bidirectional HFC network according to the transport stream parameter, and Parse and play.