CN201590870U - Video RTTS based on 3G network - Google Patents
Video RTTS based on 3G network Download PDFInfo
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- CN201590870U CN201590870U CN 200920213701 CN200920213701U CN201590870U CN 201590870 U CN201590870 U CN 201590870U CN 200920213701 CN200920213701 CN 200920213701 CN 200920213701 U CN200920213701 U CN 200920213701U CN 201590870 U CN201590870 U CN 201590870U
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Abstract
A video RTTS (real time transmission system) based on a 3G network comprises a data center and a 3G wireless video transmission terminal used for transmitting video image data acquired by a camera to the data center. The video RTTS based on the 3G network has the advantages that the progressive transition from video based on fixed network to distributed mobile video in subway, railway, public transportation, and other industries is realized, thereby breaking through the conventional limitations of the video in district, technology, cost and other fields; the on-site images can be uploaded at any site and remote images can be received in any position, and video application at all times and places can be realized; and also, the video RTTS can be extensively applied to emergency commanding, public transportation, family, public multimedia services and other fields, thereby greatly expanding the video application environment and manners and achieving a wide market prospect.
Description
Technical field
The utility model relates to the 3G network field, relates in particular to a kind of Real-time video transmission system based on 3G network.
Background technology
Along with the cable network broad application, obtained sufficient development and perfect based on the Real-time Video Transport Technology of cable network, on network, carry out the high-speed digitization video transmission, become a reality as online film, the news program etc. watched.Along with the continuous development of mobile communication business, the user has had more demand to the MMS (Multimedia Message Service) under the wireless network environment.Under this background, third generation wireless mobile telecommunication technology arises at the historic moment.
That is to say, a few years, the development of wireless mobile technology is advanced by leaps and bounds, and the second generation (2G) mobile communication system is set up in the whole world, and in some developed country, its owning amount has surpassed the owning amount of landline telephone.Except that basic speech business was provided, second generation mobile communication system also can provide multiple business such as numeral, fax, e-mail, short message and wireless Internet access, is very easy to daily life.And along with the construction of the third generation (3G) personal communication standard, broadband access network standard and wireless broadband network facility, the wireless multimedia communication technology more and more becomes the focus that people pay close attention to.
The 3G (Third Generation) Moblie net can be under the state of generally walking about, reach the transmission rate of 384kbps, in the speed of a motor vehicle is advanced, also can reach 128kbps, on fixation application, can reach 2Mbps, transmission rate so at a high speed makes various multimedia services such as real-time video transmission etc. become possibility, for encoding video pictures and transmission technology based on 3G network provide good exterior technology condition.
Along with the rise of 3G, product and the solution used based on 3G network real-time video transmission field are just keeping the impetus of strong growth.The characteristics of the real-time Transmission of remarkable multimedia, video image etc., the seamless roam technology of utilization between heterogeneous networks, the advantage that wireless communication system and internet can be coupled together, can provide more more senior services to mobile phone users, various real-time videos place, these service advantages are for providing good exterior market condition based on the 3G network Real-time video transmission system.
Yet existing video transmission is based on the video transmission of fixed network, and still, as industries such as subway, railway, public transport, by the video transmission of fixed network, the qualification of location and time can not realize whenever and wherever possible, the requirement of ubiquitous video transmission.Therefore, there is the requirement of real-time video transmission in the prior art.
The utility model content
The utility model provides a kind of Real-time video transmission system based on 3G network.
A kind of Real-time video transmission system based on 3G network comprises: data center, be used for 3G wireless video transmission terminal, terminal that the vedio data that camera is accessed is sent to data center, and described data center further comprises:
The video reception server: this server receives the real time video data that 3G wireless video transmission terminal is uploaded, and is saved in archival database, is forwarded to the playback of data storehouse simultaneously;
The video playback server: this server response terminal is browsed the request of the current video of uploading in real time of 3G wireless video transmission terminal, the request of the video file of response browsing histories;
Archival database is connected to the video reception server, is used to deposit the video data of user's passback;
The playback of data storehouse connects video reception server and video playback server respectively.
Described 3G wireless video transmission terminal comprises the mobile phone of the support 3G network that has camera.
Described terminal comprises the network terminal and mobile phone terminal.
The video system of 3G network has following advantage: at first, the user can use professional by terminal equipment under mobile status, and this terminal equipment can be that mobile phone also can be computer or the special equipment that the 3G wireless network card is housed.Video traffic can bring flexible, convenient, as not to be subjected to region restriction new experience to the user in the scope that 3G network covers.Secondly, the headend equipment of video can be placed on Anywhere easily, and this performance is applicable to some accidents or provisional occasion, and the scope of application that this has enlarged video makes video can satisfy many-sided demand better.
Based on the Real-time video transmission system of 3G network, make video based on fixed network progressively to distributed mobile video transition, as industries such as subway, railway, public transport, thus break through original video in the region, the restriction of aspect such as technology, cost.Can upload image scene from anywhere, receive distant place image at an arbitrary position, and and the fixed network video system merge to realize whenever and wherever possible, immanent Video Applications, can be widely used in fields such as emergency command, public transport, family, public multimedia service, greatly expand the applied environment and the occupation mode of video, had vast market prospect.
Description of drawings
Fig. 1 is the principle schematic based on the Real-time video transmission system of 3G network.
Embodiment
See also Fig. 1, it is a kind of schematic diagram of the Real-time video transmission system based on 3G network.It comprises: data center 1, be used for 3G wireless video transmission terminal 2, terminal 3 that the vedio data that camera is accessed is sent to data center 1, and described data center 1 further comprises:
Video reception server 11: this server receives the real time video data that 3G wireless video transmission terminal is uploaded, and is saved in archival database 13, is forwarded to playback of data storehouse 14 simultaneously;
Video playback server 12: this server response terminal is browsed the request of the current video of uploading in real time of 3G wireless video transmission terminal, the request of the video file of response browsing histories;
Playback of data storehouse 14 connects video reception server and video playback server respectively.
Described 3G wireless video transmission terminal comprises the mobile phone of the support 3G network that has camera.
Described terminal 3 comprises the network terminal and mobile phone terminal.
The on-the-spot video of monitoring is passed to 3G wireless video transmission terminal 2 by video camera, the digital video signal that 3G wireless video transmission terminal 2 will be gathered after the compression is transferred to the Internet user by 3G network and can passes through IE browser or local client, distant place office, the strange land notebook or mobile phone (Windows Mobile) the addressable per family center video management server of wireless network card are housed, just can supervise the video information that the network other end transmits in real time.
The data volume of video information is very surprising, transmit on band-limited wireless network, must be through compressed encoding, and the basic principle figure of video coding is as follows:
Each digital video frame of input is divided into piece (Block), and every comprises 8 * 8 pixels, and 4 luminance block and 2 corresponding chrominance block are formed a macro block (Macroblock), occupied area 16 * 16 pixels.Each macro block is at first encoded in the motion compensated predictive coding mode, to reduce time redundancy.To each macro block, encoder is sought the macro block that mates most with certain criterion in having the frame memory of original reconstructed frame.Current macro and the difference between the macro block of coupling be called predicted difference or residual error.Each prediction residue block of 8 * 8 is passed through one 8 * 8 two-dimensional dct transform to frequency domain.The macro block of each motion compensation is made up of 48 * 8 brightness and 28 * 8 colorimetric prediction residual blocks.These residual blocks of 8 * 8 transform to and produce 8 * 8 DCT coefficient in the frequency domain, and the DCT coefficient is again through quantizing in order to compression.Behind dct transform, the main energy of image all concentrates on low frequency range, and low frequency DCT coefficient is relatively large, and high frequency DCT coefficient less relatively (most of DCT coefficient is 0 after quantizing).The image energy of Fen Saning focuses on and few in number have on the value coefficient and make things convenient for very much compressed encoding like this.
Native system adopts MPEG4 that video is encoded.The outstanding feature of MPEG-4 standard is that it is to adopt object-based coding theory, promptly when coding, one width of cloth scenery is divided into some videos that connect each other, audio object on time and space, respectively behind the coding, arrive receiving terminal through multiplexing transmission again, and then different objects decoded respectively, thereby be combined into needed video and audio frequency.So both made things convenient for us that different objects is adopted different coding method and method for expressing, helped the fusion between different types of data again, and also can realize operation and editor easily like this for various objects.
In fact, MPEG-4 is not concrete compression algorithm, and it is at Digital Television, the interactive international standard of drawing and using the demand of (audio-visual synthetic content), interactive multimedia integration such as (WWW, DAQ and dispersions) and compress technique and formulating.The general framework of MPEG-4 system is: to the expression of natural or synthetic audio-visual content; To the management of audio-visual content data flow, as multiple spot, synchronously, cache management etc.; To the support of flexibility with to the configuration of system's different piece.
Video transmits
Reception and playback server utilization IOCP network schemer are realized high concurrent service.
IOCP full name I/O Completion Port, Chinese is translated into I/O and finishes port.IOCP is the API of an asynchronous I/O, and it can give application program with the I/O event notice efficiently.Different with use select () or other asynchronous method is that a socket [socket] has been finished port association with one, just can proceed normal Winsock then and operate.Yet when an incident took place, this finished port and just will be operated in formation of system's adding.Application program can be inquired about to obtain this core layer and be finished port then.
The basic principle of IOCP is also very simple: application program is delivered some asynchronous requests to the Windows kernel, when kernel is finished these requests, the formation that the result of these requests puts into IOCP, can handle the result that these are finished immediately at the IOCP thread pool.
In conjunction with the accompanying drawings a preferred embodiment of the present utility model is had been described in detail above, but the present invention is not restricted to the foregoing description, under the spirit and scope situation of the claim that does not break away from the application, those skilled in the art can make various modifications and remodeling.
Claims (3)
1. Real-time video transmission system based on 3G network, it is characterized in that, comprise: data center, be used for 3G wireless video transmission terminal, terminal that the vedio data that camera is accessed is sent to data center, described data center further comprises:
The video reception server: this server receives the real time video data that 3G wireless video transmission terminal is uploaded, and is saved in archival database, is forwarded to the playback of data storehouse simultaneously;
The video playback server: this server response terminal is browsed the request of the current video of uploading in real time of 3G wireless video transmission terminal, the request of the video file of response browsing histories;
Archival database is connected to the video reception server, is used to deposit the video data of user's passback;
The playback of data storehouse connects video reception server and video playback server respectively.
2. the system as claimed in claim 1 is characterized in that, described 3G wireless video transmission terminal comprises the mobile phone of the support 3G network that has camera.
3. the system as claimed in claim 1 is characterized in that, described terminal comprises the network terminal and mobile phone terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920213701 CN201590870U (en) | 2009-11-17 | 2009-11-17 | Video RTTS based on 3G network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920213701 CN201590870U (en) | 2009-11-17 | 2009-11-17 | Video RTTS based on 3G network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201590870U true CN201590870U (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920213701 Expired - Fee Related CN201590870U (en) | 2009-11-17 | 2009-11-17 | Video RTTS based on 3G network |
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| Country | Link |
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| CN (1) | CN201590870U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102143348A (en) * | 2011-01-18 | 2011-08-03 | 中国联合网络通信集团有限公司 | Video uploading system and video uploading method for mobile terminal |
| CN108702486A (en) * | 2017-09-20 | 2018-10-23 | 深圳市海能通信股份有限公司 | A kind of low delay audio/video transmission method, device and computer readable storage medium |
-
2009
- 2009-11-17 CN CN 200920213701 patent/CN201590870U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102143348A (en) * | 2011-01-18 | 2011-08-03 | 中国联合网络通信集团有限公司 | Video uploading system and video uploading method for mobile terminal |
| CN102143348B (en) * | 2011-01-18 | 2013-01-02 | 中国联合网络通信集团有限公司 | Video uploading system and video uploading method for mobile terminal |
| CN108702486A (en) * | 2017-09-20 | 2018-10-23 | 深圳市海能通信股份有限公司 | A kind of low delay audio/video transmission method, device and computer readable storage medium |
| WO2019056203A1 (en) * | 2017-09-20 | 2019-03-28 | 深圳市海能通信股份有限公司 | Low-delay audio and video transmission method, device and computer readable storage medium |
| CN108702486B (en) * | 2017-09-20 | 2020-08-04 | 深圳市海能通信股份有限公司 | Low-delay audio and video transmission method and device and computer readable storage medium |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20171117 |