CN102595094A - Multi-information combined multimedia communication method and system - Google Patents
Multi-information combined multimedia communication method and system Download PDFInfo
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- CN102595094A CN102595094A CN2011100060634A CN201110006063A CN102595094A CN 102595094 A CN102595094 A CN 102595094A CN 2011100060634 A CN2011100060634 A CN 2011100060634A CN 201110006063 A CN201110006063 A CN 201110006063A CN 102595094 A CN102595094 A CN 102595094A
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Abstract
The invention relates to the multimedia communication field, and discloses a multi-information combined multimedia communication method and a multi-information combined multimedia communication system. The method comprises the following steps: synchronously acquiring and displaying a graphics array signal and a video-audio signal by a signal acquiring module, as well as acquiring related acquiring coding data respectively; transmitting each acquiring coding data to a signal processing module by the signal acquiring data through the internet; receiving each acquiring coding data by the signal processing module, and randomly combining at least two acquiring coding data to obtain combined video-audio data; and then transmitting the combined video-audio data to each client by the signal processing module through the internet.
Description
Technical field
The present invention relates to field of multimedia communication, relate in particular to a kind of multimedia communication method and system of many information combination.
Background technology
Along with information and development of electronic technology, it is increasingly extensive that multimedia equipment (projector, video presenter) is used, and the way of presentation in the scenes such as meeting, training, teaching becomes increasingly abundant.
For most of enterprises; The important meeting file of will recording a video usually, and some traditional recording meanses can only write down single video/audio signal like equipment such as video tape recorder, DV; Can't the synchronous recording scene pass through meeting, the content of courses that equipment such as projector shows; Can't satisfy meeting, training, the demand of comprehensive record of the visual information in the medium scene of imparting knowledge to students, and these contents usually are the emphasis that meeting exchanges discussion.So present multimedia technology can not adapt to multimedization, networking, the intelligentized development trend of modern meeting room far away: all needs are a kind of can satisfy multichannel optical signal in the common scene such as meeting, training, teaching (looking signals such as audio frequency, VGA, DVI) and acoustic coding and synchronous comprehensive equipment that writes down for all trades and professions society in.
And multimedia system of the prior art mainly adopts PC and capure card to cooperate composition, and main deficiency is:
1, present multimedia system mainly adopts the all-in-one framework; If need carry out the recorded broadcast of session function at a plurality of meeting rooms in the reality; Select and in each meeting room, to dispose an all-in-one framework respectively separately, have the high deficiency of equipment cost, and be not easy to centralized management;
2, present multimedia system all adopts operating system and controlling platform based on Windows, in use receives viral assault easily, and poor stability is not easy to safeguard;
3, present multimedia system can only recording video signal and audio signal, and can not synchronous recording VGA signal, can't the complete documentation conferencing information so use present multimedia conference system, can not satisfy present needs;
4, present multimedia messages can only carry out unidirectional Streaming Media distribution, no interactivity.
Summary of the invention
The embodiment of the invention first purpose is to provide a kind of multimedia communication method, adopts this scheme to help improving multimedia communication flexibility, convenience.
The embodiment of the invention second purpose is to provide a kind of multimedia communications system, adopts this scheme to help improving multimedia communication flexibility, convenience.
A kind of multimedia communication method that the embodiment of the invention provides comprises:
The signal acquisition module synchronous acquisition shows drawing array signal, video/audio signal, obtains corresponding capturing and coding data respectively;
Said signal acquisition module is sent to signal processing module with each said capturing and coding data through the Internet;
Said signal processing module receives each said capturing and coding data, makes up at least two any said capturing and coding data, obtains the combination tone video data;
Said signal processing module is sent to each client with said combination tone video data the Internet.
Alternatively, in step: said signal acquisition module also comprises after obtaining corresponding capturing and coding data respectively:
Said signal acquisition module also is sent to said each client with each said capturing and coding data through the Internet.
Alternatively, said each said capturing and coding data of signal processing module combination obtain the combination tone video data, specifically:
Said signal processor operation Microsoft's audio format SDK (Windows Media Format SDK) is recorded into a string streaming multimedia formatted file with each said capturing and coding data combination,
The said combination tone video data of storage in said crossfire multimedia form file.
Alternatively, in step: said signal processing module also comprises after said combination tone video data the Internet is sent to each client:
Arbitrary said client is sent Word message to said signal processing module,
Said processor is sent to each said client with said Word message, shows said Word message in each said client.
Alternatively, said signal processing module is sent to each client with said combination tone video data the Internet, specifically:
Said signal processing module sends said combination tone video data according to the mode of predetermined multicast, clean culture or multicast agent of each said client to each said client.
Alternatively, said signal processing module is for adopting the server of embedded OS.
A kind of multimedia communications system that present embodiment provides comprises:
Signal acquisition module is used to gather demonstration drawing array signal, the video/audio signal of this signal acquisition module end, obtains corresponding capturing and coding data respectively;
Said signal processing module is electrically connected with said signal acquisition module and client through the Internet respectively, is used to receive each said capturing and coding data, makes up at least two any said capturing and coding data, obtains the combination tone video data.
Alternatively, said signal processing module is for adopting the server of embedded OS.
Alternatively, said signal acquisition module is arranged on the meeting room scene;
Said signal processing module is arranged on machine room.
Alternatively, said signal processing module also comprises the mutual submodule of literal,
The mutual submodule of said literal is used to receive the Word message of arbitrary said client, and said Word message is sent to each said client.
Therefore; Use the technical scheme of the embodiment of the invention; Owing to be provided with signal acquisition module at the on-the-spot end of each meeting; This signal acquisition module is carried out sample code to this on-the-spot audio signal, vision signal and VGA signal, obtains the corresponding sample code data of audio signal, vision signal and VGA signal;
This signal sampling module is connected with signal processing module through the Internet (promptly passing through netting twine); The sample code data that each signal sampling module obtains this scene through the Internet are sent to the signal processing module of the Internet opposite side; Concentrate the sample code data of each audio signal, vision signal and VGA signal correspondence to make up by signal processing module and record, with how synchronous audio signal, vision signal and the VGA signal combination of group recorded into the combination tone video data arbitrarily each scene.Like this; Each client that is connected with this signal processing module can be through playing the combination tone video data; Play each meeting scene simultaneously, perhaps monitor on-the-spot audio-video signal in each client, improve the communication efficiency of video conference greatly, improve user's use experience.
In addition, utilize the present embodiment technical scheme, at each on-the-spot end difference signalization acquisition module; The on-the-spot signal acquisition module of each meeting is passed through netting twine and is connected with the signal processing module of centralized control end; With collection terminal, signal processing end separately, adopt this distributed design can help field wiring more and install, system adopts the distributed product architecture of IP based network; Realize separating of signals collecting and signal processing; System deployment and expansion are more flexible, and the encoder that the foreground is used for signals collecting can be installed in any meeting room, and the multimedia recorded broadcast server on backstage can be installed in machine room; Communication is carried out through IP network in foreground and backstage, can satisfy the recorded broadcast of session needs of any meeting room in the unit.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute to improper qualification of the present invention, in the accompanying drawings:
The schematic flow sheet of a kind of multimedia communication method that Fig. 1 provides for the embodiment of the invention 1;
The schematic flow sheet of a kind of multimedia communication method that Fig. 2 provides for the embodiment of the invention 2;
The structural representation of a kind of multimedia communications system that Fig. 3 provides for the embodiment of the invention 3.
Embodiment
To combine accompanying drawing and specific embodiment to specify the present invention below, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as to qualification of the present invention.
Embodiment 1:
The schematic flow sheet of a kind of multimedia communication method that Fig. 1 provides for present embodiment.Referring to diagram, this method mainly may further comprise the steps:
Step 101: the signal acquisition module synchronous acquisition shows drawing array signal, video/audio signal, obtains corresponding capturing and coding data respectively.
When carrying out video conference, be respectively arranged with video equipment in video conference rooms, such as video recorder, video camera, microphone and other or the like.Possibly there are a plurality of video equipments, image documentation equipment respectively in each video conference rooms, have the various video signal source.
In the present embodiment; Be respectively arranged with signal acquisition module in each video presence; Each signal acquisition module is gathered this on-the-spot audio signal, vision signal and is shown drawing array (Video Graphics Array is called for short AGA) signal, obtains the capturing and coding data of each signal source respectively.
In this step, each acquisition module can but be not limited to use hardware chip to gather YUV (" Y " representes lightness (Lumina nce or Luma), just GTG value; " U " then is colourity (Chrominance or Chroma) with " V " expression, and effect is to describe colors of image and saturation, is used for the color of specified pixel." brightness " is created through the RGB input signal, and method is that the specific part with rgb signal is superimposed together." colourity " has then defined two the aspect-tones and the saturation of color, representes with Cr and CB respectively.Wherein, Cr has reflected the difference between red part of GB input signal and the rgb signal brightness value) data and pulse code modulation (Pulse-code modulation is called for short PCM) speech data; Adopt software WMV/H264 then, the WMA/AAC algorithm is encoded to acquired signal and is obtained the capturing and coding data.
This signal acquisition module can but be not limited to adopt Digital Signal Processing (Digital Signal Processing; Being called for short DSP) chip realizes, integrated video encoding device, high definition encoder, VGA encoder in this dsp chip and realize collection, coding, the transmission of signal.
Step 102: signal acquisition module is sent to signal processing module with each capturing and coding data through the Internet.
Each signal acquisition module is connected with signal processing module through the Internet; After each signal acquisition module was carried out signals collecting, coding respectively at the scene, each signal acquisition module sent to each capturing and coding data the signal processing module of network opposite side through Network Transmission through ICP/IP protocol.
In the present embodiment, this signal processing module can but be not limited to be arranged on server end.In addition; The all right integrated various multimedia communication management functions of this signal processing module; Signal processing module uses as a communication management server in the multimedia communications system of present embodiment, and the manager can monitor, manage at this signal processing module end.
Step 103: signal processing module receives each capturing and coding data, makes up at least two any capturing and coding data, obtains the combination tone video data.
Signal processing module receives each the capturing and coding data that sends to local terminal through the Internet; Record strategy according to the local preset signal combination of this signal processing module end; To any two groups, or any capturing and coding data more than two groups make up and record, obtain by the synthetic combination tone video data of many groups capturing and coding data combination.
Such as: below the capturing and coding data of signal processing module end input are several groups: AV1, VGA1, AV2, VGA2, then at the signal processing module end, signal processing module can support the combination in any of AV and VGA signal to record.Such as: can adopt following integrated mode: AV*1+VGA*1 or AV*2+VGA*1 or AV*1+VGA*2 etc.
Like this, can satisfy local image in the video conference, distal view picture and two-way media stream content can synchronous recording, recording videoconference field data comprehensively at the signal processing module end.
In this step; Can but be not limited to Microsoft's audio format SDK through Microsoft: Windows Media Format SDK will select the sample code data recording recorded of combination and become senior stream format (Advanced Streaming Format; Be called for short Asf) file, the combination tone video data that the storage combination is recorded in the ASF file.
Step 104: signal processing module is sent to each client with combination tone video data the Internet.
Signal processing module is connected with a plurality of clients through the Internet.
In this step signal processing module can but be not limited to according to the predetermined broadcast strategy or the request of active client; Can but be not limited to mode through multicast, clean culture or multicast agent, the combination tone video data that this locality is recorded is sent to each client through the Internet.
Step 105: client receives the combination tone video data, plays this combination tone video data in this locality.
Behind the combination tone video data that each client reception data processing module sends over; Play FAI combination tone video data in this locality; Each client can browse to synchronous multichannel optical signal and acoustic coding simultaneously like this; Can fully understand the content of meeting, improve the communication efficiency of Web conference.
Therefore; Utilize the present embodiment technical scheme; Owing to be provided with signal acquisition module at the on-the-spot end of each meeting; This signal acquisition module is carried out sample code to this on-the-spot audio signal, vision signal and VGA signal, obtains the corresponding sample code data of audio signal, vision signal and VGA signal;
This signal sampling module is connected with signal processing module through the Internet (promptly passing through netting twine); The sample code data that each signal sampling module obtains this scene through the Internet are sent to the signal processing module of the Internet opposite side; Concentrate the sample code data of each audio signal, vision signal and VGA signal correspondence to make up by signal processing module and record, with how synchronous audio signal, vision signal and the VGA signal combination of group recorded into the combination tone video data arbitrarily each scene.Like this; Each client that is connected with this signal processing module can be through playing the combination tone video data; Play each meeting scene simultaneously, perhaps monitor on-the-spot audio-video signal in each client, improve the communication efficiency of video conference greatly, improve user's use experience.
In addition, utilize the present embodiment technical scheme, at each on-the-spot end difference signalization acquisition module; The on-the-spot signal acquisition module of each meeting is passed through netting twine and is connected with the signal processing module of centralized control end; With collection terminal, signal processing end separately, adopt this distributed design can help field wiring more and install, system adopts the distributed product architecture of IP based network; Realize separating of signals collecting and signal processing; System deployment and expansion are more flexible, and the encoder that the foreground is used for signals collecting can be installed in any meeting room, and the multimedia recorded broadcast server on backstage can be installed in machine room; Communication is carried out through IP network in foreground and backstage, can satisfy the recorded broadcast of session needs of any meeting room in the unit.
Need to prove, after the step 101 of present embodiment, each signal acquisition module can also with step 102 synchronously, each capturing and coding data that this signal acquisition module is obtained are sent to each client through the Internet, play-over in each client.
Embodiment 2:
The another kind of multimedia communication method schematic flow sheet that Fig. 2 provides for present embodiment, referring to shown in Figure 2, this flow process is with respect to flow process shown in Figure 1 institute difference:
After step 105, also comprise following:
Step 201: arbitrary client is sent Word message to signal processing module.
Any one client can be keyed in mutual Word message of linking up in this client, and this literal information is sent to the other one section signal processing module in the Internet through the Internet in carrying out the video conference process.
Step 202: signal processing module is sent to each client with Word message, at each client display text information, realizes interactive.
After signal processing module is received this mutual Word message,, this literal information is sent to corresponding each client, thereby realizes that information interaction is interactive according to predetermined transmit path.
Therefore in the present embodiment, client provides the literal interactive function, and the user can chat while seeing, in time asks a question, and the introducing of interactive function can be satisfied the needs of remote teaching, training, lecture better.
Such as: Server is connected with VGAbox;
Server connects the VGAbox port;
Server sends and connects password;
The VGAbox authentication password, successful then return successful connection, otherwise return the password failure.
VGAbox sends video and audio frequency parameter
Embodiment 3:
A kind of multimedia communications system structural representation that Fig. 3 provides for present embodiment.Referring to shown in Figure 3, native system mainly comprises: signal acquisition module 301, signal processing module 302, two module Internet connections.Its operation principle is mainly following:
Demonstration drawing array signal, video/audio signal that signal acquisition module 301 is gathered this signal acquisition module 301 ends obtain corresponding capturing and coding data respectively.Signal processing module 302 networks receive each capturing and coding data, make up at least two any said capturing and coding data, obtain the combination tone video data, through the Internet combination tone video data that obtains are sent to each client 303 of the Internet end then.
Detailed operation principle is referring to the record among the embodiment 1, do not do at this and gives unnecessary details.
In the present embodiment, for the further robustness of raising system, this signal processing module 302 can but be not limited to adopt embedded OS, the specialized hardware platform of non-PC framework, reliable and stable, antiviral assault is easy to maintenance management.
In addition; This signal processing module 302 can also but be not limited to comprise the mutual submodule of literal; The mutual submodule of this literal is used to receive the Word message of the arbitrary client 303 in the Internet; And be provided with according to predetermined route current Word message is sent to corresponding each client 303, be implemented in the information interaction in the video conference, further improve the efficient of multimedia communication.Specifically see the introduction among the embodiment 2 in detail.
Therefore; Utilize the present embodiment technical scheme; Owing to be provided with signal acquisition module 301 at the on-the-spot end of each meeting; 301 pairs of this signal acquisition module should the scene audio signal, vision signal and VGA signal carry out sample code, obtain the corresponding sample code data of audio signal, vision signal and VGA signal;
This signal sampling module is connected with signal processing module 302 through the Internet (promptly passing through netting twine); The sample code data that each signal sampling module obtains this scene through the Internet are sent to the signal processing module 302 of the Internet opposite side; Concentrate the sample code data of each audio signal, vision signal and VGA signal correspondence to make up by signal processing module 302 and record, with how synchronous audio signal, vision signal and the VGA signal combination of group recorded into the combination tone video data arbitrarily each scene.Like this; Each client 303 that is connected with this signal processing module 302 can be through playing the combination tone video data; Play each meeting scene simultaneously, perhaps monitor on-the-spot audio-video signal in each client 303, improve the communication efficiency of video conference greatly, improve user's use experience.
In addition, utilize the present embodiment technical scheme, at each on-the-spot end difference signalization acquisition module 301; The on-the-spot signal acquisition module 301 of each meeting is passed through netting twine and is connected with the signal processing module 302 of centralized control end; With collection terminal, signal processing end separately, adopt this distributed design can help field wiring more and install, system adopts the distributed product architecture of IP based network; Realize separating of signals collecting and signal processing; System deployment and expansion are more flexible, and the encoder that the foreground is used for signals collecting can be installed in any meeting room, and the multimedia recorded broadcast server on backstage can be installed in machine room; Communication is carried out through IP network in foreground and backstage, can satisfy the recorded broadcast of session needs of any meeting room in the unit.
More than the technical scheme that the embodiment of the invention provided has been carried out detailed introduction; Used concrete example among this paper the principle and the execution mode of the embodiment of the invention are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the embodiment of the invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a multimedia communication method is characterized in that, comprising:
The signal acquisition module synchronous acquisition shows drawing array signal, video/audio signal, obtains corresponding capturing and coding data respectively;
Said signal acquisition module is sent to signal processing module with each said capturing and coding data through the Internet;
Said signal processing module receives each said capturing and coding data, makes up at least two any said capturing and coding data, obtains the combination tone video data;
Said signal processing module is sent to each client with said combination tone video data the Internet.
2. a kind of multimedia communication method according to claim 1 is characterized in that,
In step: said signal acquisition module also comprises after obtaining corresponding capturing and coding data respectively:
Said signal acquisition module also is sent to said each client with each said capturing and coding data through the Internet.
3. a kind of multimedia communication method according to claim 1 is characterized in that,
Said each said capturing and coding data of signal processing module combination obtain the combination tone video data, specifically:
Said signal processor operation Microsoft's audio format SDK (Windows Media Format SDK) is recorded into a string streaming multimedia formatted file with each said capturing and coding data combination,
The said combination tone video data of storage in said crossfire multimedia form file.
4. a kind of multimedia communication method according to claim 1 is characterized in that,
In step: said signal processing module also comprises after said combination tone video data the Internet is sent to each client:
Arbitrary said client is sent Word message to said signal processing module,
Said processor is sent to each said client with said Word message, shows said Word message in each said client.
5. a kind of multimedia communication method according to claim 1 is characterized in that,
Said signal processing module is sent to each client with said combination tone video data the Internet, specifically:
Said signal processing module sends said combination tone video data according to the mode of predetermined multicast, clean culture or multicast agent of each said client to each said client.
6. a kind of multimedia communication method according to claim 1 is characterized in that,
Said signal processing module is for adopting the server of embedded OS.
7. a multimedia communications system is characterized in that, comprising:
Signal acquisition module is used to gather demonstration drawing array signal, the video/audio signal of this signal acquisition module end, obtains corresponding capturing and coding data respectively;
Said signal processing module is electrically connected with said signal acquisition module and client through the Internet respectively, is used to receive each said capturing and coding data, makes up at least two any said capturing and coding data, obtains the combination tone video data.
8. a kind of multimedia communications system according to claim 7 is characterized in that,
Said signal processing module is for adopting the server of embedded OS.
9. according to claim 7 or 8 described a kind of multimedia communications systems, it is characterized in that,
Said signal acquisition module is arranged on the meeting room scene;
Said signal processing module is arranged on machine room.
10. according to claim 7 or 8 described a kind of multimedia communications systems, it is characterized in that,
Said signal processing module also comprises the mutual submodule of literal,
The mutual submodule of said literal is used to receive the Word message of arbitrary said client, and said Word message is sent to each said client.
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Application publication date: 20120718 |