CN103179373A - Visual communication system, terminal gateway, video gateway and visual communication method - Google Patents
Visual communication system, terminal gateway, video gateway and visual communication method Download PDFInfo
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Abstract
The invention relates to a visual telephone system, particularly relates to a visual communication technology implemented by the aid of a wireless communication system, and discloses a visual communication method. The visual communication method includes that a terminal gateway receives video information transmitted by a mobile terminal; and the terminal gateway enables the received video information to be carried on display signals meeting display requirements of a display terminal, and transmits the display signals to the display terminal so as to display a video. The invention further provides a visual communication system, a video gateway and the terminal gateway. The visual communication method, the visual communication system, the video gateway and the terminal gateway have the advantages that when used for dialing or answering a video telephone, the mobile terminal transmits video signals to the terminal gateway, the terminal gateway enables the video signals to be displayed on the display terminal, accordingly, a user can conveniently watch the conversation video via the display terminal, and the visual communication method, the visual communication system, the video gateway and the terminal gateway bring convenience for the user to carry out visual communication.
Description
The present patent application be that September 17, application number in 2008 are 200810222483.4 the applying date, denomination of invention divides an application for the patent application of " visual communication system, terminating gateway, video gateway and visual communication method ".
Technical field
The present invention relates to video-phone system, relate in particular to the technology that realizes face-to-face communication based on wireless communication system.
Background technology
Video-phone system also can be described as video-telephone system, for people provide the traditional communication mode that is different from, take multimedia as the basis the Novel Communication mode.By video-phone system, two different local individuals or colony can mutual transaudient sounds, image information, reach instant and interactive communication, thereby satisfy the demand of the multi-faceted information interchange of people.
At present, the video-phone system of prior art generally has two kinds:
A kind of IP(Internet Protocol that is based on, Internet protocol) video-phone system of network, it has configured special-purpose radio phone terminal, the Protocol based on VoIP(Voice over Internet for example has been installed, the IP based network agreement to transmit speech sound) the PC terminal of the video telephone client software of technology perhaps is equipped with the special-purpose landline telephone based on the hardware of voip technology, support video telephone function.This special-purpose radio phone terminal gathers user's sound, video information, and transmits sound, video information by IP network; Perhaps receive sound, video information that the other side transmits, and by the loud speaker playback of audio information, by display display video information.
Another kind is based on the video-phone system of cordless communication network: transmit sound, vision signal with the voice channel (being circuit domain) by 64K between the mobile terminal of camera, thereby realize that mobile terminal carries out the video-phone system of face-to-face communication based on cordless communication network.
The present inventor finds that the first realizes the method for face-to-face communication, does not have mobility easily; And the second visual communication method, although have mobility, the display screen of mobile terminal is subject to its screen size, resolution sizes etc., therefore the demonstration for video information has larger limitation.Therefore, the video-phone system of prior art can not provide more convenient visual (video) communication for the user.
Summary of the invention
The embodiment of the present invention provides a kind of visual communication system, method and terminating gateway, with thinking that the user provides more convenient face-to-face communication.
A kind of visual communication method comprises:
The video information that the terminating gateway mobile terminal receive sends;
Described terminating gateway is carried on the video information that receives the display that satisfies the display terminal display requirement, and described display is sent to display terminal carries out video and show.
A kind of visual communication system comprises:
Mobile terminal is used for from video communication opposite end receiver, video information and output, or output is to the video information of video communication opposite end transmission;
Terminating gateway is used for receiving the video information that described mobile terminal is exported, and video information is carried on display, and exports described display;
Display terminal carries out the video demonstration after receiving described signal.
A kind of terminating gateway comprises:
The video data receiver module is used for the video data that mobile terminal receive sends;
Decoder module is used for the video data decoding that described video data receiver module receives is obtained frame of video;
Modular converter, the frame of video that is used for described decoder module is obtained is converted to the frame of video that satisfies the display terminal display requirement;
Coding module is used for the frame of video of described modular converter conversion is encoded to the receivable display of described display terminal;
The display output module is used for described display is outputed to described display terminal.
The embodiment of the present invention is owing to dialing at mobile terminal or when answering visual telephone, mobile terminal sends to terminating gateway with vision signal, and by terminating gateway, vision signal is converted to the displayable signal of display terminal (as TV) and shows, the user can watch the conversation video easily by display terminal, communicates by letter thereby more convenient user carries out visual (video).
The embodiment of the present invention provides another visual communication system, video gateway, terminating gateway, with thinking that the user provides more convenient face-to-face communication.
A kind of visual communication system comprises: mobile terminal, Session initiation protocol SIP server also comprise:
Moving exchanging center MSC is used for receiving the signaling that described mobile terminal sends, and when determining that the signaling that receives is the video calling signaling, the signaling that receives is carried out route;
Video gateway, be used for after the signaling that receives described MSC route, for described mobile terminal distributes a SIP unified resource sign URI, and the signaling that sends according to the described mobile terminal that the mobile terminal SIP URI that distributes will receive is converted to corresponding Internet protocol IP packet; Forward by the IP packet of described sip server with conversion;
Correspondent Node is used for receiving IP packet and the demonstration that described sip server forwards.
A kind of video gateway comprises:
The signaling receiver module is used for receiving signaling;
The sign distribution module is used to the mobile terminal that sends described signaling to distribute a SIP URI sign;
Signaling transfer module is used for the signaling that described signaling receiver module receives is converted to corresponding IP packet; Including described sign distribution module in described IP packet is the SIP URI sign that described mobile terminal distributes;
IP Packet Generation module is used for the IP packet with described signaling transfer module conversion, carries out routing forwarding according to the recipient's who comprises in described signaling SIP URI.
A kind of terminating gateway comprises:
IP-based voice transfer VoIP client modules is used for the IP packet of received communication opposite end transmission, and obtains sound, video data from the IP packet that receives;
The audio signal output module is used for that the voice data that described VoIP client modules obtains is converted to audio signal and outputs to stereo set and carry out voice output;
The vision signal output module is used for that the video audio data that described VoIP client modules obtains is converted to display and outputs to display terminal and carry out video and show.
Because video gateway is converted to corresponding IP packet with signaling, according to the sign of the SIP URI in signaling, the IP packet is sent to terminating gateway via sip server, and the receiving terminal gateway is via the IP packet of sip server transmission, after being converted to signaling, the IP packet that receives sends to mobile terminal, thereby realize that mobile terminal and the terminating gateway with VoIP client carry out video communication, and terminating gateway is shown to vision signal on display terminal, and more convenient user carries out video communication; Also can realize and the video communication of mobile terminal by terminating gateway like this, improve the convenience of user video communication.
The embodiment of the present invention provides another visual communication system, with thinking that the user provides more convenient face-to-face communication.
A kind of visual communication system comprises:
Mobile terminal, described mobile terminal are used for initiating voip call by the VoIP client, and the IP packet of video information is carried in transmission;
Sip server is used for receiving described voip call by the radio communication core net, and after setting up the communication logic link channel according to described voip call, the IP packet that described mobile terminal is sent forwards;
Terminating gateway is used for receiving the IP packet that described sip server forwards.
Because mobile terminal has the VoIP client, can directly initiate voip call to sip server by the radio communication core net, and set up communication logic link channel between mobile terminal and terminal called gateway by sip server, thereby realize that the mobile terminal with VoIP client carries out video communication with the terminating gateway with voip client end, and terminating gateway is shown to vision signal on display terminal, and more convenient user carries out video communication; Also can realize and the video communication of mobile terminal by terminating gateway like this, improve the convenience of user video communication.
The embodiment of the present invention provides another visual communication system, terminating gateway, with thinking that the user provides more convenient face-to-face communication.
A kind of visual communication system comprises:
The first landline telephone is used for the second concurrent sending voice information of landline telephone of calling out;
The first video collector is used for gathering video information;
The first terminal gateway is used for obtaining the telephone number that described the first landline telephone is dialed; And according to the corresponding relation of the telephone number that sets in advance and SIP URI, determine the SIP URI that this telephone number is corresponding; And obtain the voice messaging of described the first landline telephone transmission, the video information of described the first video collector collection, comprise the voice of acquisition, the IP packet of video information according to the SIP URI transmission of determining;
Sip server is used for receiving the IP packet that described first terminal gateway sends, and forwards the IP packet that receives;
The second terminating gateway is used for receiving the IP packet that described sip server forwards, and obtains voice messaging from the IP packet that receives, and is converted to voice signal and output; Obtain video information from the IP packet that receives, be converted to display and output;
The second landline telephone is used for the received speech signal lang sound output of going forward side by side;
The first display terminal is used for receiving described display and carries out video showing.
A kind of terminating gateway comprises:
The corresponding relation memory module is used for the corresponding relation of the SIP URI of the terminating gateway that the telephone number of storage landline telephone is connected with this landline telephone;
Search module, be used for according to the telephone number from the landline telephone acquisition, search the corresponding relation of described corresponding relation memory module storage, determine the SIP URI corresponding with described telephone number;
Audio-frequency information obtains module, is used for obtaining audio-frequency information from described landline telephone and sends to described VoIP client modules;
The VoIP client modules is used for generating the IP packet that comprises from the audio-frequency information of described audio-frequency information acquisition module reception, and sends according to the described definite SIP URI of module that searches the IP packet that generates to Correspondent Node.
Terminating gateway is due to can be according to the corresponding relation of telephone number and terminating gateway SIP URI, when dialing fixed telephone number, the user finds the SIP URI of the terminating gateway that is connected with this landline telephone, and set up video communication according to SIP URI and this terminating gateway of the terminating gateway that finds, can realize video communication by terminating gateway thereby make when dialing landline telephone.
Description of drawings
Fig. 1 is the schematic diagram of the visual communication system of the embodiment of the present invention one;
Fig. 2 is that the mobile terminal of the embodiment of the present invention one is realized the method flow diagram of face-to-face communication by terminating gateway;
Fig. 3 is the terminating gateway internal structure block diagram of the embodiment of the present invention one;
Fig. 4 a, Fig. 4 b are the schematic diagram of the visual communication system of the embodiment of the present invention two;
Fig. 5 is the schematic flow sheet of the visual communication method of the embodiment of the present invention two;
Fig. 6 is the video gateway internal structure block diagram of the embodiment of the present invention two;
Fig. 7 is the terminating gateway internal structure block diagram of the embodiment of the present invention two;
Fig. 8 a, Fig. 8 b are the schematic diagram of the visual communication system of the embodiment of the present invention three;
Fig. 9 is the schematic flow sheet of the visual communication method of the embodiment of the present invention three;
Figure 10 a, Figure 10 b are the schematic diagram of the visual communication system of the embodiment of the present invention four;
Figure 11 is the schematic diagram of the another kind of visual communication system of the embodiment of the present invention four;
Figure 12 is the terminating gateway internal structure block diagram of the embodiment of the present invention four.
Embodiment
The present inventor find TV be the one family share video frequency program the most frequently used present one of terminal, if TV combines with video telephone, can better bring into play the video call function of video telephone, satisfy the possibility that the many people of kinsfolk's (or office, conference member) participate in.The invention provides a kind of terminating gateway, when the user dials by mobile terminal at home or receives calls, the video information that this mobile terminal will send or receive (for example video media stream) sends to this terminating gateway, and terminating gateway presents the video information that the user will send or receive on TV after changing; Perhaps, the terminating gateway that provides can also have video communication function, and the user can directly dial terminating gateway and carry out video communication, and the vision signal that terminating gateway will send or receive presents after changing on TV.
Be elaborated with specific embodiment below in conjunction with accompanying drawing.
The terminating gateway that the embodiment of the present invention one provides obtains the video information that mobile terminal sends or receives, and the video information that obtains is shown to TV or other display terminal, thereby realizes more convenient face-to-face communication; Embodiment two provides a kind of directly dialed, terminating gateway that have video communication function, and provides corresponding CCF and equipment at network side for this terminating gateway; Embodiment three provides a kind of mobile phone terminal directly to initiate voip call and terminating gateway is receiving the technical scheme of carrying out video communication after this calling; Embodiment four provides the scheme that realizes video communication between a kind of terminating gateway and terminating gateway.
Embodiment one
In the system that realizes face-to-face communication as shown in Figure 1, mobile terminal A101 dials visual telephone to mobile terminal B102.Mobile terminal A101 and the mobile terminal B102 circuit domain by cordless communication network transmits mutually and looks, audio-frequency information.
User's side shifting terminal A101 will send to mobile terminal B102's or send to terminating gateway A103 from the video information that mobile terminal B102 receives, terminating gateway A103 presents the video information that obtains on TV or other display terminal; Perhaps mobile terminal B102 also can send to mobile terminal A103's or the mobile terminal A103's that receives video information and send to terminating gateway B104, and terminating gateway B104 presents the video information that obtains on TV or other display terminal.
The video information that will send or receive with mobile terminal B102 sends to terminating gateway B104, and vision signal is presented to TV to terminating gateway B104 or other display terminal is that example describes, and idiographic flow comprises the steps: as shown in Figure 2
S200: terminating gateway searches the mobile terminal in its signal cover.
the method that terminating gateway detects mobile terminal also can have several different methods, for example, terminating gateway and mobile terminal are all supported the Protocol based on HTTP(Hyper Text Transfer, HTML (Hypertext Markup Language)) the mutual discovery more than the layer and the agreement of registration, need to be composed of number with mobile terminal or other wireless device that terminating gateway is set up wireless connections for each of family, register and authentication mutually just in mobile terminal enters into terminating gateway wireless signal coverage, then send interoperability test message, thereby mobile terminal just and terminating gateway set up communication link in logic, can carry out various message, the intercommunication of data flow.This kind detection method and bottom bearer independent, mobile terminal and terminating gateway can be based on wired or wireless connected modes.
the video information that terminating gateway can send by multiple wireless or wired access way mobile terminal receive, ADSL(Asymmetric Digital Subscriber Line for example, Asymmetrical Digital Subscriber Line) access, the Ethernet access, the optical fiber access, Wi-Fi(Wireless Fidelity, adopting wireless fidelity technology) access, WiMAX(World Interoperability for Microwave Access, whole world interoperability inserting of microwave) access, 2G(2nd generation cordless communication network) data access, 3G(the 3rd generation cordless communication network) data access etc.
S201: the vision signal that mobile terminal will send or receive sends to terminating gateway.
Mobile terminal is when dialing or answer visual telephone, and the vision signal that will send or receive sends to terminating gateway by wired or wireless mode.It can be the Multi-encoding mode that mobile terminal sends to the video information of terminating gateway, MPEG(Moving Pictures Experts Group for example, dynamic image expert group)-2, MPEG-4, H.264 wait coded format.This vision signal can be carried on the IP packet---the concrete interface protocol of this depending on terminating gateway; If based on the IP agreement, mobile terminal sends the IP packet that includes video information to terminating gateway.
S202: the video information that the terminating gateway mobile terminal receive sends is converted to the displayable TV signal of TV.
Concrete, terminating gateway is decoded after the data flow (such as the IP packet) that receives the mobile terminal transmission, obtains video information (for example frame of video), and it is digital signal.Be based on the frame of video of mobile terminal display requirement due to decoded frame of video, the resolution of its every frame not necessarily can satisfy the display requirement of TV or other display terminal, and mobile phone is also different from the frame number that TV or other display terminal per second can show; Therefore, decoded frame of video need to be converted to the Media Stream that meets display requirement.TV for example, mainly will carry out digital video signal to the conversion of analog video signal, be converted to the displayable standard of TV, as Phase Alternation Line system, TSC-system, the TV of China is generally supported Phase Alternation Line system, in Phase Alternation Line system, stipulated for 25 frame/seconds, every frame pixel is 720*576, every frame level 625 scan lines (minute odd-numbered line, even number line, namely strange, even two, because adopting interlace mode).Digital signal is transformed in Phase Alternation Line system display process, need at first unpack the RTP bag, and the video compression coding mode of selecting is decoded, as the H.264 decoding of compression coding mode, then carry out digital signal to the conversion of analog signal, to support CIF(Catch in Focus according to the video flowing of decompress(ion)) 352*288, or 720*480 or other carry out the conversion with the analog signal of Phase Alternation Line system or TSC-system.Substantially be simulated television for present TV, but also will carry out the processing such as enhancing, convergent-divergent of image; Terminating gateway is not necessarily the same with the displayable frame number of mobile phone according to network capacity and the displayable minimum frame number of TV simultaneously, needs the certain video information of buffer memory, plays according to display requirement again.If other display terminal, as the equipment of home gateway by external similar projection instrument, directly projection, home gateway need to support to connect VGA interface (Video Graphic Array) or other interface of projecting apparatus, digital signal becomes analog signal through analog-modulated, outputs to the projecting apparatus projection through the VGA interface.
S203: TV signal is sent to TV by the TV access interface, shown by TV.
With TV signal via the general access interface of TV, as AV(AudioVidio, sound, video) port or S-Video(Separate Video, two component vide interfaces) etc. port be linked into TV, shown by TV.When showing, can utilize the remote controller of TV or other button to carry out the switching that television channel is shown to the AV demonstration.
Certainly, except TV, terminating gateway also can be carried on the video information that obtains the displayable signal of other display terminal (as projecting apparatus etc.) and be shown to display terminal.The method of concrete conversion is well known to those skilled in the art, and can be to change according to the signal format of concrete display terminal requirement, repeats no more herein.
Further, mobile terminal can also send to audio-frequency information this terminating gateway, and terminating gateway is carried on audio-frequency information in the receivable signal of TV, outputs to TV.
A kind of concrete structure of above-mentioned terminating gateway comprises as shown in Figure 3: video data receiver module 301, decoder module 302, modular converter 303, coding module 304, display output module 305.
If terminating gateway and mobile terminal adopt communication, terminating gateway can also comprise:
Connect and set up module, be used for the mobile terminal in its wireless signal coverage of search, and when searching mobile terminal, set up radio communication with this mobile terminal and be connected.After radio communication connects foundation, the vision signal that video data receiver module 301 mobile terminal receives send.
Video data receiver module 301 is used for receiving video data.Obviously, the video data that this terminating gateway receives is not limited to the video data that mobile terminal sends, and the video data for miscellaneous equipment sends also can receive, processes and show.The video data receiver module specifically can adopt plurality of access modes to come receiving video signals, such as ADSL access, Ethernet access, optical fiber access, WiFi access, WiMAX access, 2G data access, 3G data access etc.
The frame of video that modular converter 303 is used for decoder module 302 is obtained is converted to the frame of video that satisfies the display terminal display requirement.Be based on the frame of video of mobile terminal display screen due to decoded frame of video, the frame number that the resolution of its every frame and per second can show not necessarily can satisfy the display requirement of TV or other display terminal; Therefore, decoded frame of video need to be converted to the frame of video (Media Stream) that meets the display terminal display requirement.
This terminating gateway is presented to function on display terminal except realizing the vision signal that will receive, can also integrated many other functions or business; Can also comprise the service logic control module like this, manage as a whole and dispatch in order to multiple business and function to terminating gateway.
The technology that above-mentioned mobile terminal A101 and mobile terminal B102 carry out video communication by circuit domain is same as the prior art, is well known to those skilled in the art, and repeats no more herein.
The embodiment of the present invention is owing to dialing at mobile terminal or when answering visual telephone, mobile terminal sends to terminating gateway with vision signal, and by terminating gateway, vision signal is converted to the displayable signal of display terminal (as TV) and shows, the user can watch the conversation video easily by display terminal, thereby more convenient user carries out video communication.
Embodiment two
The embodiment of the present invention two provides a kind of technical scheme that directly realizes face-to-face communication by the terminating gateway that the VoIP client software is housed.As shown in Fig. 4 a, mobile terminal 401 can directly be dialed the terminating gateway 402 that the VoIP client software is housed, and terminating gateway 402 is equipped with camera, Mike, loud speaker and display terminal (as TV etc.), can realize video communication with mobile terminal 401.The idiographic flow of communication comprises the steps: as shown in Figure 5
S501: the video call that mobile terminal 401 is initiated terminating gateway 402.
Because terminating gateway 402 has the VoIP client software, has SIP(Session Initiation Protocol corresponding to the terminating gateway 402 of supporting voip technology, conversation initialized protocol) address, be SIP URI(Uniform Resource Identifier, the unified resource sign) in order to marking terminal gateway 402, include the SIP URI of this terminating gateway 402 in the video call that mobile terminal 401 is initiated.
S502:MSC(Mobile Switching Center, mobile switching centre) 403 receive the calling that mobile terminal 401 initiates after, after definite type of call is video call, route the call to video gateway 404.
After MSC403 receives calling, judge that this calling is ordinary call or video call, if video call routes the call to video gateway 404.
S503: video gateway 404 carries out the IP conversion according to the related signaling of the video call that receives, and the IP packet of conversion is routed to sip server 405.
After video gateway 404 receives the video call information of carrying with signaling method, the packet into IP is repacked in the conversion of unpacking, and determine the SIP URI of terminating gateway according to the number of the Correspondent Node (callee) of the video call that obtains: each has the terminating gateway of SIP URI sign also corresponding to a termination number, video gateway 404 is searched this corresponding relation according to the termination number in video call, obtains corresponding SIP URI.Video gateway 404 arrives the IP Packet Generation of conversion according to the SIP URI that finds the sip server 405 of correspondence.Video gateway is also supported Session Initiation Protocol, and communication control processor is Session Initiation Protocol by protocol conversion H.324M.Video gateway 404 is returned the interim SIP URI of distribution of mobile terminal 401, in order to sign mobile terminal 401 in the video communication service of current mobile terminal 401 and terminating gateway 402.
In addition, video gateway 404 can also be supported fixed telephone number PSTN(Public Switched Telephone Network, public switch telephone network), mobile terminal number MSISDN(Mobile Station ISDN, mobile ISDN) to the mapping of SIP URI.
S504:SIP server 405 is set up the communication logic link channel according to the content of the IP packet that receives with terminating gateway 402.
S505: terminating gateway 402 carries out video communication with mobile terminal 401 by the communication logic link channel.
Concrete, terminating gateway 402 is packaged into the IP data packet transmission to sip server 405 with audio-video frequency media stream, sip server 405 with IP packet route to video gateway 404, video gateway 404 is converted to corresponding signaling after the IP packet is unpacked, namely with the audio/video flow of signaling method carrying, control message etc., and the SIPURI route of distributing to mobile terminal 401 of carrying in the IP packet that returns by terminating gateway 402 sends signaling to mobile terminal 401;
S506: terminating gateway 402 is in carrying out the video communication process, and after the vision signal that receives or will send to the other side was converted to the displayable display of television terminal, the output display signal carried out video to television terminal and shows.
Further, can also increase the gateway device 406(of operator between sip server 405 and terminating gateway 402 as shown in Fig. 4 b), can realize the IP-based communication of terminating gateway 402 by operator's gateway device 406, namely sip server 405 is set up IP-based wireless data channel by operator's gateway device 406 and terminating gateway 402.Sip server 405 is routed to operator's gateway device 406 with the IP packet, and operator's gateway device 406 is set up IP-based wireless data channel according to the SIP URI in the IP packet and terminating gateway 402.Operator's gateway device 406 can be WAP(Wireless Application Protocol, WAP (wireless application protocol)) gateway or Short Message Service Gateway etc.
The IP-based wireless data channel of terminating gateway 402 by setting up carries out video communication by operator's gateway device 406, sip server 405 and video gateway 404 with mobile terminal 401.
In the video-phone system as shown in Fig. 4 b, media processing/control and management server can carry out some processing to the Media Stream through sip server, as coding and decoding, and the perhaps conversion between different coding, can also support multiple business, these business are planned as a whole to control and management.
In the system of above-mentioned Fig. 4 a, with terminating gateway as the opposite end of carrying out video communication with mobile terminal; Obviously have the terminal of VoIP client for other, also can realize mobile terminal by the method in the present embodiment and have video communication between the terminal of VoIP client.
A kind of concrete structure of video gateway 404 comprises as shown in Figure 6: signaling receiver module 601, signaling transfer module 602, IP Packet Generation module 603, IP packet-receiving module 604, IP packet modular converter 605, signaling sending module 606.
Sign distribution module 607 is used to the mobile terminal that sends described signaling to distribute a SIP URI sign;
IP Packet Generation module 603 is used for the IP packet with described signaling transfer module conversion, carries out routing forwarding according to the recipient's who comprises in described signaling SIP URI.
IP packet-receiving module 604 is used for receiving the IP packet;
IP packet modular converter 605 is used for the IP packet that IP packet-receiving module 604 receives is converted to signaling;
Signaling sending module 606 is used for the signaling with described IP packet modular converter conversion, carries out routing forwarding according to the SIP URI of the described mobile terminal that comprises in described IP packet.
Have the VoIP client software in terminating gateway, make terminating gateway can pass through IP network transmission tone, vision signal.A kind of concrete structure of terminating gateway comprises as shown in Figure 7: VoIP client modules 701, video information obtain module 705, audio-frequency information obtains module 706, vision signal output module 702, audio signal output module 707.
Video information obtains module 705, is used for obtaining video information from video collector (as first-class in making a video recording), and the video information that obtains is sent to VoIP client modules 701.Concrete, encode after the vision signal that video information acquisition module 705 acquisition video collector send, and the video information of coding is sent to VoIP client modules 701.Can be MPEG-2, MPEG-4 with video information coding, H.264 wait coded format.
Audio-frequency information obtains module 706, is used for obtaining audio-frequency information from audio collection device (as Mike), and the audio-frequency information that obtains is sent to VoIP client modules 701.Concrete, encode after the audio signal that audio-frequency information acquisition module 706 acquisition audio collection devices send, and the audio-frequency information of coding is sent to VoIP client modules 701.Can be with coded audio information for G.711, G.723 waiting coded format.
Audio signal output module 707 is converted to simulated audio signal with voice data and outputs to the stereo sets such as loud speaker, realizes voice output.Concrete, be converted to simulated audio signal after audio signal output module 707 is decoded voice data and output to the stereo sets such as loud speaker, realize voice output.
Vision signal output module 702 is converted to video data the display that meets the display terminal display requirement, outputs to display terminal, carries out video and shows.Concrete, after vision signal output module 702 is decoded video data, then be converted to the video display signal that meets the display terminal display requirement, output to display terminal, carry out video and show.
Vision signal output module 702 can comprise with lower unit:
Video data obtains the unit, is used for obtaining the video data that voip client end module 701 sends.This video data can be MPEG-2, MPEG-4, H.264 wait coded format.
Signal conversion unit after decoding for the video data that video information is obtained module 705 acquisitions, is converted to the display that meets the display terminal display requirement.This display terminal can comprise TV, projecting apparatus etc.
The display output unit is used for the display of signal conversion unit conversion is outputed to display terminal.The display output module outputs to display terminal by the interface of display terminal with display.
Certainly, can also comprise each functional module of the terminating gateway in embodiment one in the terminating gateway of this enforcement, also can realize simultaneously the function that obtains the local mobile terminal vision signal and show.
The embodiment of the present invention is because video gateway is converted to corresponding IP packet with signaling, according to the sign of the SIP URI in signaling, the IP packet is sent to terminating gateway via sip server, and the receiving terminal gateway is via the IP packet of sip server transmission, after being converted to signaling, the IP packet that receives sends to mobile terminal, thereby realize that mobile terminal and the terminating gateway with VoIP client carry out video communication, and terminating gateway is shown to vision signal on display terminal, and more convenient user carries out video communication; Also can realize and the video communication of mobile terminal by terminating gateway like this, improve the convenience of user video communication.
Embodiment three
The VoIP client software is housed in the mobile terminal of the embodiment of the present invention three, can directly initiates voip call by base station, RNC to sip server, sip server is realized calling mobile terminal and callee's communication connection according to this voip call.
As shown in Fig. 8 a, mobile terminal 801 is initiated voip call by base station, RNC to sip server, carries out route by sip server 803, realizes the video communication flow process of callee's terminating gateway 802 and mobile terminal 801 as shown in Figure 9, comprises the steps:
The voip call that S901:SIP server 803 mobile terminal receives 801 are initiated.
S902:SIP server 803 is set up the communication logic link channel according to the callee SIP URI in calling out with terminating gateway 802.
S903: carry out video communication with mobile terminal 801 by sip server 803 and radio communication core net terminating gateway 802, and after the vision signal that will receive or will send to the other side was converted to the displayable display of television terminal, the output display signal carried out video to television terminal and shows.
After the communication logic link channel was set up, mobile terminal 801 can by the mutual transmission bearer of sip server 803 in sound, the video media stream of IP, carry out video communication with terminating gateway 802.
Certainly, also can utilize operator's gateway device 804 to realize the IP-based communication of terminating gateway 802 (as shown in Fig. 8 b), described in concrete grammar such as embodiment two, not repeat them here.
In the present embodiment, the concrete structure of terminating gateway is identical with terminating gateway concrete structure in embodiment two, repeats no more herein.
The embodiment of the present invention is because mobile terminal has the VoIP client, can directly initiate voip call to sip server by the radio communication core net, and set up communication logic link channel between mobile terminal and terminal called gateway by sip server, thereby realize that the mobile terminal with VoIP client carries out video communication with the terminating gateway with voip client end, and terminating gateway is shown to vision signal on display terminal, and more convenient user carries out video communication; Also can realize and the video communication of mobile terminal by terminating gateway like this, improve the convenience of user video communication.
Embodiment four
Be equipped with between the terminating gateway of VoIP client and also can carry out video communication.As shown in Figure 10 a, terminating gateway A1001 has the VoIP client, also has sip address, i.e. SIP URI sign; Terminating gateway B1002 also has VoIP client, SIP URI sign.Can set up logical communications links by sip server 1003 at terminating gateway A1001 and terminating gateway B1002, thereby transmission is based on sound, the video media stream of IP carrying.Terminating gateway A1001 can be connected audio collection device (Mike), video collector (camera) separately with terminating gateway B1002, obtains user's voice (audio frequency), video information; Show by the display terminal that connects separately the video information that receives or will send; By loud speaker output voice (audio frequency) information that connects separately.Concrete grammar is introduced in the aforementioned embodiment, does not repeat them here.
Can also realize the IP-based radio communication of terminating gateway (as shown in Figure 10 b) by operator's gateway device in terminating gateway and sip server.Operator's gateway device can be WAP gateway or Short Message Service Gateway etc.
Can also realize on this basis the video communication between landline telephone and landline telephone, as shown in figure 11.For a long time, people are accustomed to adopting landline telephone to dial the other side's number communicating.The video communication that landline telephone is combined with terminating gateway realize can meet people's use habit more.As long as the number of dialing the other side on landline telephone can be realized the video communication with the other side:
Landline telephone A1101 is connected with terminating gateway A1102, and terminating gateway A1102 has the VoIP client; Landline telephone B1105 is connected with terminating gateway B1104, and terminating gateway B1104 has the VoIP client.
When dialing the number of landline telephone B1105 by landline telephone A1101, terminating gateway A obtains the number that landline telephone A1101 dials, and searches the mapping table of telephone number and SIP URI, determines the SIP URI that telephone number is corresponding.This mapping table has been preserved the corresponding relation of the SIP URI of the terminating gateway that the telephone number of landline telephone is connected with this landline telephone, wherein also comprises the corresponding relation of the SIP URI of the telephone number of landline telephone B1105 and terminating gateway B1104.
The SIP URI that terminating gateway A1102 is corresponding according to the telephone number of dialing connects with terminating gateway B1104 by sip server 1103, and terminating gateway B1104 carries out ring to landline telephone B1105; After the user answers landline telephone B1105, set up the communication logic link channel.Can carry out video communication by the communication logic link channel of setting up.
The process of specifically carrying out video communication is: terminating gateway A1102 obtains the voice messaging of connected landline telephone A1101, and the video information of connected video collector (camera), sound, the video information that obtains is packaged as the IP packet sends to terminating gateway B1104 by sip server; Obtain wherein sound, video information after terminating gateway B1104 reception IP packet, terminating gateway B1104 outputs to landline telephone B1105 with audio-frequency information, video information is outputed to display terminal show.Equally, terminating gateway B1104 obtains the voice messaging of connected landline telephone B1105, and the video information of connected video collector is packaged as the IP packet with sound, the video information that obtains and sends to terminating gateway A1102 by sip server; Terminating gateway A1102 outputs to landline telephone A1101 with audio-frequency information, video information is outputed to display terminal show.
The mapping table of preserving in terminating gateway A1102 can be both that the user inputs voluntarily, can be also that regular business service platform from network side obtains.This business service platform is safeguarded the corresponding relation of the SIP URI of the terminating gateway that the telephone number of each landline telephone is connected with this landline telephone.
A kind of concrete structure of terminating gateway A1102 or terminating gateway B1104 comprises as shown in figure 12: corresponding relation memory module 1201, search module 1202, audio-frequency information and obtain module 1203, audio signal output module 1204, VoIP client modules 1205.
Preserved the corresponding relation of the SIPURI of the telephone number of landline telephone and terminating gateway in corresponding relation memory module 1201.
Audio-frequency information obtains module 1203, is used for obtaining the audio-frequency information of landline telephone.Concrete, audio-frequency information obtains module 1203 and obtains the analog voice signal of landline telephone, and encodes after being converted to digital audio and video signals, and the audio-frequency information after coding is sent to VoIP client modules 1205.
Audio signal output module 1204 after being used for VoIP client modules 1205 is decoded from the IP packet acquisition voice data that receives, being converted to analog voice signal and outputing to landline telephone, by the receiver output voice of landline telephone.
Terminating gateway further comprises: vision signal obtains module 1206, vision signal output module 1207.
Vision signal obtains module 1206, is used for from the first-class acquisition video information of making a video recording.
Vision signal output module 1207 is used for obtaining video data from VoIP client modules 1205, and this video data can be both the video data that receives from the counterpart terminal gateway, can be also the video data that sends to the counterpart terminal gateway.And outputing to display terminal with being converted to the displayable display of display terminal after this video data decoding, display terminal carries out video and shows.
Obviously, for system as shown in figure 11, the landline telephone A that is connected with terminating gateway A1102 can be replaced with mobile terminal A, the landline telephone B that also terminating gateway B1104 can be connected replaces with mobile terminal B; Perhaps further, replace landline telephone A and the camera that is connected with terminating gateway A1102 with the mobile terminal A with camera, replace landline telephone B and the camera that is connected with terminating gateway B1104 with the mobile terminal B with camera.Those skilled in the art can easy realization be substituted the scheme of landline telephone according to the system of the disclosed Figure 11 of the embodiment of the present invention with mobile terminal, repeat no more herein.
Certainly, as a kind of method of more optimizing, when landline telephone does not need to dial visual telephone, and be common voice call, terminating gateway can be connected to this landline telephone the PSTN net, carries out common voice call.The switching of visual telephone and voice call can have several different methods, for example, if visual telephone is dialed the other side's number and is added feature key (as: *, # key) on landline telephone, terminating gateway carries out video communication by sip server after being defined as visual telephone according to this feature key; If the normal speech phone, do not add the feature key after dialing the other side's number, terminating gateway is connected to the PSTN net with phone, carries out common voice call.
The terminating gateway of the embodiment of the present invention is due to can be according to the corresponding relation of telephone number and terminating gateway SIP URI, when dialing fixed telephone number, the user finds the SIP URI of the terminating gateway that is connected with this landline telephone, and set up video communication according to SIP URI and this terminating gateway of the terminating gateway that finds, can realize video communication by terminating gateway thereby make when dialing landline telephone.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to complete by program, this program can be stored in a computer read/write memory medium, as: ROM/RAM, magnetic disc, CD etc.
The above is only the preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (20)
1. visual communication system comprises: mobile terminal, Session initiation protocol SIP server, it is characterized in that, and also comprise:
Moving exchanging center MSC is used for receiving the signaling that described mobile terminal sends, and when determining that the signaling that receives is the video calling signaling, the signaling that receives is carried out route;
Video gateway, be used for after the signaling that receives described MSC route, for described mobile terminal distributes a SIP unified resource sign URI, and the signaling that sends according to the described mobile terminal that the mobile terminal SIP URI that distributes will receive is converted to corresponding Internet protocol IP packet; Forward by the IP packet of described sip server with conversion;
Correspondent Node is used for receiving IP packet and the demonstration that described sip server forwards;
Wherein, described Correspondent Node comprises:
Terminating gateway is used for receiving the IP packet that described sip server forwards, and the video data in the IP packet is converted to the display that satisfies the display terminal display requirement, and exports described display;
Display terminal is used for receiving described display and carries out video showing.
2. the system as claimed in claim 1, is characterized in that,
Described Correspondent Node also is used for returning to the IP packet to described mobile terminal;
Described video gateway also is used for receiving by described sip server the IP packet that described Correspondent Node returns; And after the described IP packet that returns was converted to corresponding signaling, the SIP URI of the described mobile terminal that comprises according to the described IP packet that returns sent to described mobile terminal by described MSC with the signaling of conversion.
3. system as claimed in claim 2, is characterized in that, also comprises:
Operator's gateway device is used for setting up IP-based wireless data channel with described Correspondent Node; And
The IP packet that described sip server returns to described IP package forward to described Correspondent Node or received communication opposite end by described operator gateway device.
4. system as claimed in claim 3, is characterized in that, described operator gateway device is WAP gateway or Short Message Service Gateway.
5. the system as claimed in claim 1, is characterized in that, also comprises:
Video collector is connected with described terminating gateway, is used for gathering video information;
The audio collection device is connected with described terminating gateway, is used for gathering audio-frequency information; And
Described terminating gateway also is used for generation and includes the video information of described video collector collection and the IP packet of the audio-frequency information that described audio collection device gathers, and returns to the IP packet of generation to described mobile terminal.
6. a visual communication system, is characterized in that, comprising:
Mobile terminal, described mobile terminal are used for initiating voip call by the VoIP client, and the IP packet of video information is carried in transmission;
Sip server is used for receiving described voip call by the radio communication core net, and after setting up the communication logic link channel according to described voip call, the IP packet that described mobile terminal is sent forwards;
Terminating gateway is used for receiving the IP packet that described sip server forwards;
Wherein, described system also comprises display terminal; And
Described terminating gateway also is used for obtaining video information from the IP packet that receives, and video information is carried on the display that satisfies the display terminal display requirement sends to described display terminal and carry out video and show.
7. system as claimed in claim 6, is characterized in that,
Described terminating gateway also is used for returning to the IP packet to described mobile terminal;
Described sip server also is used for receiving the IP packet that described terminating gateway returns, and the IP packet that the described terminating gateway that will receive returns forwards to described mobile terminal;
Described mobile terminal is used for the described IP packet that returns by the described sip server forwarding of described VoIP client.
8. system as claimed in claim 7, is characterized in that, also comprises:
Operator's gateway device is used for setting up IP-based wireless data channel with described terminating gateway; And
Described sip server also is used for by described operator gateway device, the IP packet that described mobile terminal sends being forwarded to described terminating gateway, and the IP packet that perhaps terminating gateway that receives is returned forwards to described mobile terminal.
9. system as claimed in claim 8, is characterized in that, described operator gateway device is WAP gateway or Short Message Service Gateway.
10. a visual communication system, is characterized in that, comprising:
The first landline telephone is used for the second concurrent sending voice information of landline telephone of calling out;
The first video collector is used for gathering video information;
The first terminal gateway is used for obtaining the telephone number that described the first landline telephone is dialed; And according to the corresponding relation of the telephone number that sets in advance and SIP URI, determine the SIP URI that this telephone number is corresponding; And obtain the voice messaging of described the first landline telephone transmission, the video information of described the first video collector collection, comprise the voice of acquisition, the IP packet of video information according to the SIP URI transmission of determining;
Sip server is used for receiving the IP packet that described first terminal gateway sends, and forwards the IP packet that receives;
The second terminating gateway is used for receiving the IP packet that described sip server forwards, and obtains voice messaging from the IP packet that receives, and is converted to voice signal and output; Obtain video information from the IP packet that receives, be converted to display and the output of satisfying the first display terminal display requirement;
The second landline telephone is used for the received speech signal lang sound output of going forward side by side;
The first display terminal is used for receiving described display and carries out video showing.
11. system as claimed in claim 10 is characterized in that,
Described the second terminating gateway also is used for obtaining the voice messaging of described the second landline telephone, generates the IP packet that comprises the IP packet of the second landline telephone voice messaging and return to generation to described first terminal gateway;
Described sip server also is used for receiving IP packet that described the second terminating gateway returns and to described first terminal gateway forwards;
The IP packet that described first terminal gateway also returns for the second terminating gateway that receives described sip server forwarding, and the acquisition voice messaging outputs to described the first landline telephone from the described IP packet that returns.
12. system as claimed in claim 11 is characterized in that, also comprises: the second video collector, the second display terminal;
Described the second terminating gateway also is used for obtaining the video information that described the second video collector gathers, and generates the IP packet of the video information that comprises the second video collector collection and returns to the IP packet that comprises the video information that the second video collector gathers to described first terminal gateway;
Described sip server is used for receiving the IP packet that described the second terminating gateway returns, and to described first terminal gateway forwards;
Described first terminal gateway receives the IP packet of the video information that comprises the second video collector collection of described sip server forwarding, obtains video information and output to described the second display terminal from this IP packet that receives.
13. described system as arbitrary in claim 10-12 is characterized in that, also comprises:
Business platform is used for safeguarding described corresponding relation; And
Described first terminal gateway also is used for obtaining described corresponding relation from described business platform.
14. described system as arbitrary in claim 10-12 is characterized in that, also comprises:
First operator's gateway device is used for setting up IP-based wireless data channel with described first terminal gateway; And
Described sip server also is used for by described first operator's gateway device described IP package forward to described first terminal gateway, and receives the IP packet that the first terminal gateway sends.
15. system as claimed in claim 14 is characterized in that, described first operator's gateway device is WAP (wireless application protocol) WAP gateway or Short Message Service Gateway.
16. system as claimed in claim 14 is characterized in that, also comprises:
Second operator's gateway device is used for setting up IP-based wireless data channel with described the second terminating gateway; And
Described sip server also is used for by described second operator's gateway device described IP package forward to described the second terminating gateway or receives the IP packet that the second terminating gateway sends.
17. system as claimed in claim 16 is characterized in that, described second operator's gateway device is WAP gateway or Short Message Service Gateway.
18. system as claimed in claim 10 is characterized in that,
Described the first landline telephone is replaceable is the first mobile terminal; And/or,
Described the second landline telephone is replaceable is the second mobile terminal.
19. a terminating gateway is characterized in that, comprising:
The corresponding relation memory module is used for the corresponding relation of the SIP URI of the terminating gateway that the telephone number of storage landline telephone is connected with this landline telephone;
Search module, be used for according to the telephone number from the landline telephone acquisition, search the corresponding relation of described corresponding relation memory module storage, determine the SIP URI corresponding with described telephone number;
Audio-frequency information obtains module, is used for obtaining audio-frequency information from described landline telephone and sends to described VoIP client modules;
The VoIP client modules is used for generating the IP packet that comprises from the audio-frequency information of described audio-frequency information acquisition module reception, and sends according to the described definite SIP URI of module that searches the IP packet that generates to Correspondent Node;
Video information obtains module, is used for obtaining video information from video collector and sends to described VoIP client modules; And
Described VoIP client modules also is used for generating the IP packet that comprises from the video information of described video information acquisition module reception; Obtain video information from the IP packet that described Correspondent Node receives; And
Described terminating gateway also comprises:
The vision signal output module is used for the video information that the IP packet that described VoIP client modules receives from described Correspondent Node obtains is carried on and outputs to display terminal the display that satisfies the display terminal display requirement and carry out video and show.
20. terminating gateway as claimed in claim 19 is characterized in that,
Described VoIP client modules also is used for obtaining audio-frequency information from the IP packet that described Correspondent Node receives; And described terminating gateway also comprises:
The audio signal output module is used for the audio-frequency information that the IP packet that described VoIP client modules receives from described Correspondent Node obtains is outputed to described landline telephone.
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| CN201310054211.9A CN103179373B (en) | 2008-09-17 | 2008-09-17 | Visual communication system, terminating gateway, video gateway and visual communication method |
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