CN101521790A - Methods for realizing high definition conference system based on digital television - Google Patents
Methods for realizing high definition conference system based on digital television Download PDFInfo
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- CN101521790A CN101521790A CN200810187294A CN200810187294A CN101521790A CN 101521790 A CN101521790 A CN 101521790A CN 200810187294 A CN200810187294 A CN 200810187294A CN 200810187294 A CN200810187294 A CN 200810187294A CN 101521790 A CN101521790 A CN 101521790A
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Abstract
The invention provides methods for realizing a high definition conference system based on a digital television, and one of the methods comprises the following steps: acquiring high definition data of a conference scene; coding the acquired high definition data; and sending the coded high definition data. The methods improve the video definition of video conferences.
Description
Technical field
The present invention relates to the video conferencing technology field, particularly realize the method for high definition conference system based on Digital Television.
Background technology
Video conference is the virtual meeting that realizes by the network communications technology, make geographically the user that disperses can copolymerization one place, by multiple mode exchange of information such as figure, sound, support people to carry out real time information at a distance and exchange and the application system of sharing, carrying out collaborative work.Video conference greatly facilitates between the cooperation member and exchanges truly, intuitively, for remote teaching and meeting very important effect is arranged also.
Along with development of science and technology, video conference has occupied more and more important position in the commercial affairs contacts, the definition of video, the time delay of transmission, transmission bandwidth, video stabilization and price become the key factor of weighing video conference, wherein the definition that how to improve video is stood in the breach, and becomes the problem that solution is needed in video conference most badly.
Summary of the invention
The invention provides the method that realizes high definition conference system based on Digital Television, improve the definition of video in the video conference.
The invention provides a kind of method based on Digital Television realization high definition conference system, this method comprises:
Conference scenario is carried out the high definition data acquisition;
The high definition data that collect are encoded;
Send the high definition data after encoding.
Further, describedly conference scenario carried out the high definition data acquisition comprise:
By the high definition camera audio frequency, the video of conference scenario are gathered.
Further, describedly comprise by the video collection of high definition camera to conference scenario:
Adjust angle, the direction of described high definition camera;
According to adjusted angle, direction, the video of conference scenario is gathered.
Further, the described high definition data that collect are encoded comprises:
The high definition data that collect are compressed.
Further, the high definition data behind the described transmission coding comprise:
With the high definition data multiplex behind the high definition data behind one road coding and other roads coding;
Send the high definition data after multiplexing.
The present invention also provides a kind of method based on Digital Television realization high definition conference system, and this method comprises:
High definition data behind the received code;
The high definition data that receive are decoded;
Show decoded high definition data.
Further, the high definition data behind the described received code comprise:
High definition data behind the received code optionally according to demand.
Further, the described high definition data that receive are decoded comprises:
The high definition data that receive are decompressed.
Further, the described high definition data that receive are decoded comprises:
The high definition data that receive are carried out demultiplexing;
A road or multichannel in the high definition data that demultiplexing is come out decompress respectively.
Further, the decoded high definition data of described demonstration comprise:
The conference scenario that shows the high definition data correspondence behind the multipath decoding simultaneously.
Description of drawings
Fig. 1 shows and the present invention is based on the embodiment that Digital Television realizes the method for high definition conference system;
Fig. 2 shows 8 road high definition conference application architectures;
Fig. 3 shows the internal structure of high definition conference system among Fig. 2;
Fig. 4 shows among Fig. 3 any one tunnel workflow;
Fig. 5 shows the embodiment of the high definition conference system that the present invention is based on digital television HDTV platform;
Fig. 6 shows another embodiment of the high definition conference system that the present invention is based on digital television HDTV platform.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is done and to be elaborated.
See also Fig. 1, Fig. 1 shows and the present invention is based on the embodiment that Digital Television realizes the method for high definition conference system, this method is carried out the collection of high definition data respectively to two or more conference scenario, the high definition transfer of data with one of them conference scenario collection shows in other one or several conference scenario again.
Concrete, for one of them conference scenario, can comprise the steps:
101, conference scenario is carried out the high definition data acquisition.
Concrete, can gather audio frequency, the video of conference scenario by the high definition camera.When gathering, can adjust angle, the direction of high definition camera; According to adjusted angle, direction, the video of conference scenario is gathered.Can also adjust the size of the audio frequency that collects.
For the ease of participant or meeting staff operation, can adjust the high definition camera by remote controller.
102, the high definition data that collect are encoded.
Can adopt multiple coded system, in the present embodiment to the mode of the high definition The data compressed encoding that collects.
103, the high definition data behind the transmission coding.
If only the high definition data of a conference scenario collection need be sent, then can directly the high definition data behind the coding be sent; High definition data with two or more conference scenario collections send if desired, then can will send behind two-way or the high definition data multiplex more than the two-way as required, and concrete can comprise:
With the high definition data multiplex behind the high definition data behind one road coding and other roads coding;
Send the high definition data after multiplexing.
In the process of transmission, can carry out Resource Allocation in Networks and management by built-in watch-dog (MCU).
By corresponding procotol the high definition transfer of data that one of them conference scenario collects is arrived other one or several conference scenario, for other one or several conference scenario, can comprise the steps:
104, the high definition data behind the received code.
Conference scenario can select to show the image data of the other side's meeting, therefore, for this conference scenario, can be according to demand high definition data behind the received code optionally.
105, the high definition data that receive are decoded.
If what receive is the high definition data of a conference scenario of the other side, and the coded system of the high definition The data of this conference scenario collection is compression, then can directly decompress to the high definition data that receive, thus the high definition data that obtain showing.
If what receive is the high definition data of two or more conference scenario of the other side, and the coded system of the high definition The data of these conference scenario collections is compressions, then needs to carry out following operation:
The high definition data that receive are carried out demultiplexing;
A road or multichannel in the high definition data that demultiplexing is come out decompress respectively.
106, show decoded high definition data.
If decoded high definition data are high definition data of a conference scenario of the other side, then can directly show; If the high definition data that decoded high definition data are two or more conference scenario of the other side then can adopt multiple modes such as picture-in-picture, picture out picture to show the conference scenario of the high definition data correspondence behind the multipath decoding simultaneously.
Adopt the technical scheme of present embodiment, adopt the high definition data, can improve the definition of video in the video conference as the object that transmits in the video conference.
See also Fig. 2, Fig. 2 shows 8 road high definition conference application architectures.The method that provides among Fig. 1 can be applied in the multi-path high-definition meeting, is that example describes with 8 the tunnel among Fig. 2, and other multichannel application principle is identical.
Wherein, the high definition camera: the audio frequency and video that are used to finish certain scene are gathered, and can carry out the adjustment of angle direction and audio frequency size by remote controller simultaneously.
HDTV: be used for selecting to show the other side's meeting collection picture.
High definition conference system (in Fig. 2, being called for short high definition conference system) based on digital television HDTV platform: be used for input signal is carried out compressed encoding and transmission, carry out the decompress(ion) output of contracing and show that built-in watch-dog (MCU) can carry out Resource Allocation in Networks and management receiving compressed signal.
Local Area Network: be used for transmission medium as high definition conference system.
See also Fig. 3, Fig. 3 shows the internal structure of high definition conference system among Fig. 2.Wherein, communicate by the high speed serial ports between each module.Eight channel parallels, the CPU that can set in advance in the first passage can directly communicate with local PC.
Being described as follows of each unit among the figure:
CPU: be used for carrying out communication with long-distance user's control end, and each local processing unit of control; H.264, standard resolution/high-res (SD/HD) is decoded; Elementary stream (ES) is packaged into transmitting data stream (TS); TS is carried on the Internet protocol (IP).
Field programmable gate array (FPGA): be used for TS stream multiplex/demultiplex; Process identifier (PID) mapping and filtration; The de-embedding of SD/HD audio frequency; The insertion of TS packing, TS transmission matrix and program specific information (PSI); High-speed synchronous serial (SPI) interface, high speed data transfer (DDR2) interface, differential signal (LVDS) interface are provided.
Multimedia digital signal is handled (MDSP): be used for H.264 encoding and decoding of high-res (HD); (2) H.264 encoding and decoding of the HD of dual code stream or SD; H.264 encoding and decoding (support 1920x1080i, promptly code check is supported scope: 64kbps to 62.5Mbps); Audio-frequency unit function: high-fidelity (High-fidelity), 2 sound channel AAC-LC encoding and decoding, MP2 encoding and decoding, the decoding of MP1 and MP3, Dolby Digital (DolbyDigital) 5.1 decodings etc.
Every road can provide high-definition multimedia (HDMI) interface, IP interface, USB (USB) interface, asynchronous serial (ASI) interface, digital component serial (SDI) interface, serial communication (RS232) interface to link to each other with other external equipments, wherein, the HDMI interface is used for receiving and the output high resolution audio and video signal; The IP interface is used to provide the gigabit networking interface; USB interface is used to provide the interface of storage system configuration information; ASI interface: be used for TS stream output monitoring; The SDI interface can be applicable to SDI input and output environment; The RS232 interface can be used for system debug and configuration.
See also Fig. 4, Fig. 4 shows among Fig. 3 any one tunnel workflow.Wherein,
Browser/server (B/S): control based on WEB2.0, this is the main mode of operation of USB (universal serial bus) (USI), by adopting the B/S framework of web2.0, the user can easily finish the control of equipment between giving directions, and obtains the operating state of equipment from the lively page.
Client/server (C/S): control based on Simple Network Management Protocol (SNMP) local network management
Conversation initialized protocol (SIP), H323: the basic agreement of conference system
Decoding unit (DEC) is according to the signal automatic decoding of input.
Coding unit (ENC) is according to the signal autocoding of input.
Matrix unit (MATRIX) is used for different TS stream is distributed
Internet Protocol Gateway (IP-GW), internet protocol router (IP-ROUTER): the control of IP signal and processing
Multiplexing Unit (MUX): carry out multiplexing and distribution to TS stream.
After the data of high definition camera collection are input to coding module ENC by the HDMI interface, according to corresponding SIP or H.232 protocol packing become IP bag and deliver to the designated destination to show, then export to DEC by the MARTIX module for the IP bag that sends from IP and decode, decoded data are transferred to HDTV by the HDMI interface and show.So just, realized the application of high definition conference.
Concrete, when meeting begins, the every road of conference system platform of two scenes (decide according to hardware performance on supported several roads at most) receives the audio frequency and video input source of high definition camera collection by HDMI, be directly inputted to ENC and carry out encoding compression, the control terminal operator carries out the parameter configuration that different scenes are inserted, and utilizes SIP or H323 agreement to send to and carries out exchanges data in the network.The recipient receives by respective protocol and distributes and by DEC decoded portion output high resolution audio and video signal, show by HDTV.
Technical scheme of the present invention can be carried out the application of different modes:
For for the conference system of SPTS SPTS, if the corresponding conference scenario of conference scenario, then the high definition data of high definition camera collection are directly inputted to ENC and carry out encoding compression, need not to carry out multiplexing, and the recipient directly shows.If corresponding conference scenario of a plurality of conference scenario, the high definition data of then every road high definition camera collection, be directly inputted to ENC and carry out encoding compression, need not to carry out multiplexing, by built-in MCU the high definition data of the scene that will receive and show are selected, the recipient can realize that many scenes such as picture-in-picture/picture out picture (PIP/POP) show.
For conference system based on MPTS MPTS, the high definition data of then every road high definition camera collection, be directly inputted to ENC and carry out encoding compression, carry out multiplexing according to needed configuration, by built-in MCU the high definition data of the scene that will receive and show are selected, the recipient can realize PIP/POP) etc. many scenes show.
Adopt the technical scheme of present embodiment, adopt the high definition data, can improve the definition of video in the video conference as the object that transmits in the video conference.
See also Fig. 5, Fig. 5 shows the embodiment (transmitting terminal) of the high definition conference system that the present invention is based on digital television HDTV platform, and this system comprises:
Acquisition module 501 is used for conference scenario is carried out the high definition data acquisition;
Coding module 502, the high definition data that are used for acquisition module is collected are encoded;
Sending module 503 is used to send the high definition data after coding module is encoded.
Further, acquisition module 501 can comprise:
Audio frequency submodule 501-1 is used for the audio frequency of conference scenario is gathered;
Video submodule 501-2 is used for the video of conference scenario is gathered.
Further, acquisition module can also comprise:
Adjust submodule, be used to adjust angle, the direction that the video submodule is gathered.Adjust submodule and can also adjust the size of the audio frequency of audio frequency submodule collection.Wherein, acquisition module can be integrated on the high definition camera.
When only needing to send one tunnel high definition data, sending module directly sends the high definition data behind the coding module coding, sends the above high definition data of two-way or two-way if desired, and then sending module 503 can comprise:
Multiplexing submodule 503-1 is used for the high definition data multiplex behind the high definition data behind one road coding and other roads coding;
Send submodule 503-2, be used to send the high definition data of multiplexing submodule after multiplexing.
See also Fig. 6, Fig. 6 shows another embodiment (receiving terminal) of the high definition conference system that the present invention is based on digital television HDTV platform, and this system comprises:
If only need receive one tunnel high definition data, then the high definition data behind the direct received code of receiver module receive the above high definition data of two-way or two-way if desired, and then receiver module 601 can comprise:
Chooser module 601-1 is used for selecting according to demand the high definition data of required reception;
Receive submodule 601-2, be used for result, optionally the high definition data behind the received code according to the chooser module.
Corresponding, decoder module 602 can comprise:
Demultiplexing submodule 602-1, the high definition data that are used for receiver module is received are carried out demultiplexing;
Decompression submodule 602-2, a road or the multichannel that are used for high definition data that demultiplexing submodule demultiplexing is come out decompress respectively.
In the present embodiment, display module can be integrated in the HDTV.
Adopt the technical scheme of present embodiment, adopt the high definition data, can improve the definition of video in the video conference as the object that transmits in the video conference.
The above only is the specific 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 (10)
1, a kind of method based on Digital Television realization high definition conference system is characterized in that this method comprises:
Conference scenario is carried out the high definition data acquisition;
The high definition data that collect are encoded;
Send the high definition data after encoding.
2, method according to claim 1 is characterized in that, describedly conference scenario is carried out the high definition data acquisition comprises:
By the high definition camera audio frequency, the video of conference scenario are gathered.
3, method according to claim 2 is characterized in that, describedly comprises by the video collection of high definition camera to conference scenario:
Adjust angle, the direction of described high definition camera;
According to adjusted angle, direction, the video of conference scenario is gathered.
4, method according to claim 1 is characterized in that, the described high definition data that collect are encoded comprises:
The high definition data that collect are compressed.
5, method according to claim 1 is characterized in that, the high definition data behind the described transmission coding comprise:
With the high definition data multiplex behind the high definition data behind one road coding and other roads coding;
Send the high definition data after multiplexing.
6, a kind of method based on Digital Television realization high definition conference system is characterized in that this method comprises:
High definition data behind the received code;
The high definition data that receive are decoded;
Show decoded high definition data.
7, method according to claim 6 is characterized in that, the high definition data behind the described received code comprise:
High definition data behind the received code optionally according to demand.
8, method according to claim 6 is characterized in that, the described high definition data that receive are decoded comprises:
The high definition data that receive are decompressed.
9, method according to claim 6 is characterized in that, the described high definition data that receive are decoded comprises:
The high definition data that receive are carried out demultiplexing;
A road or multichannel in the high definition data that demultiplexing is come out decompress respectively.
10, method according to claim 9 is characterized in that, the decoded high definition data of described demonstration comprise:
The conference scenario that shows the high definition data correspondence behind the multipath decoding simultaneously.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012028018A1 (en) * | 2010-09-03 | 2012-03-08 | 中兴通讯股份有限公司 | Distributed video processing method and video conference system |
| CN102447871A (en) * | 2010-10-13 | 2012-05-09 | 深圳市锐取软件技术有限公司 | High-definition matrix capable of realizing remote synchronous transmission of multichannel high-definition videos |
| CN107770481A (en) * | 2016-08-15 | 2018-03-06 | 常州海图电子科技有限公司 | CMOS compatible inputs and the video information transmission system of HDMI inputs |
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2008
- 2008-12-22 CN CN200810187294A patent/CN101521790A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012028018A1 (en) * | 2010-09-03 | 2012-03-08 | 中兴通讯股份有限公司 | Distributed video processing method and video conference system |
| CN102447871A (en) * | 2010-10-13 | 2012-05-09 | 深圳市锐取软件技术有限公司 | High-definition matrix capable of realizing remote synchronous transmission of multichannel high-definition videos |
| CN102447871B (en) * | 2010-10-13 | 2013-02-06 | 深圳市锐取软件技术有限公司 | High-definition matrix capable of realizing remote synchronous transmission of multichannel high-definition videos |
| CN107770481A (en) * | 2016-08-15 | 2018-03-06 | 常州海图电子科技有限公司 | CMOS compatible inputs and the video information transmission system of HDMI inputs |
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Application publication date: 20090902 |