CN101964905B - Terminal for realizing television news live broadcast through wireless communication network - Google Patents
Terminal for realizing television news live broadcast through wireless communication network Download PDFInfo
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- CN101964905B CN101964905B CN201010519879.2A CN201010519879A CN101964905B CN 101964905 B CN101964905 B CN 101964905B CN 201010519879 A CN201010519879 A CN 201010519879A CN 101964905 B CN101964905 B CN 101964905B
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Abstract
The invention relates to a terminal for realizing television news live broadcast through a wireless communication network. The terminal comprises a shell, wherein an analog-to-digital (A/D) conversion circuit, a video/audio coder, a transport stream (TS) multiplexer, a transmission control protocol/Internet protocol (TCP/IP) wrapper and a network card are respectively connected with a central processing unit (CPU) around the CPU in the shell; the network card is connected with the CPU through a universal serial bus (USB) interface; a video/audio signal is sent to the A/D conversion circuit from an SDI video/audio interface or analog video/audio interface; the A/D conversion circuit sends a digital video/audio signal to the video/audio coder; the video/audio signal which is subjected to compression coding generates TS data stream in the TS multiplexer; and the TS data stream is sent to the TCP/IP wrapper to be wrapped into an IP data packet. Compared with the prior art, the terminal has the advantages of simple structure, live broadcast without an outside broadcasting vehicle, low live broadcast cost, a few limitations, no time and territory limitations, obvious advantages of television media communication, quickness and convenience.
Description
Technical field
The present invention relates to a kind of terminal of utilizing wireless communication networks to realize television news live broadcast, it is a kind of media server that data flow is sent to assigned address by wireless communication networks and the Internet, scene information is carried out the live news mode terminal of very first time report, this device had both ensured the quality of broadcast items, had greatly saved again the high expense of using mobile control room and leased satellite.
Background technology
Mobile control room is all adopted in the on-the-spot broadcasting of existing news, physical culture, large-scale activity, passes program back TV station by microwave or satellite channel and broadcasts, although can realize on-the-spot first-hand report, also has many unfavorable factors.
The one, live equipment cost is high, and influencing factor is many.What live News reporter went out to interview main use is satellite transmission car or microwave car launcher, the acquisition expenses of vehicle is higher, easily millions of up to ten million, strong channel may have the mobile control room of oneself, but what more channel used all is the mobile control room that a plurality of channels in the platform, a plurality of department share, and calls very inconvenience.And the satellite transmission car in use, and troop is huger, except reporter, shooting, also need the multidigit technical staff such as instructor in broadcasting, editor, before live, need to carry out strict equipment debugging and preparation, consuming time longer, for breaking news, the reporter is difficult to get the primary scene.The spatial limitation that mobile control room is subject to is many, and narrow space or region span are larger, all is not suitable for broadcasting live.Therefore, News is when broadcasting live, time, region, content to the live selected topic have more restriction, it is general that what select all is the media event that can predict that program occurs in this locality (city, channel place) when broadcasting, such as live astrology wonder on the central plaza in city, perhaps in " day with no cars " live citizens' activities situation etc., and for the media event of burst, but be difficult to make fast reaction.
The 2nd, the on-the-spot broadcasting reaction speed is slow, and live telecast can't embody the media advantage.For the media event of burst, because live broadcast vehicle can't in time arrive, so the reporter that is on the scene of the very first time have to be by the mode of telephone connection, to carry out line live with the studio, and it is live in fact to have become " broadcasting ".Only have sound not have the sorry of picture in order to remedy, editing saving can be selected legman's photo, or the mode that spreads " not long ago picture " to process line live, the reporter interviews shooting after live end, or sends photo site to the Internet bar, for next during living broadcast of programs period, perhaps carry out play-by-play in the program of second day, it is sorry that the restriction of equipment allows live telecast occur, and the visual communication advantage of TV media also can't find full expression.
The restriction of the technical elements such as live equipment, signal transmission has fettered in the News program on-the-spot broadcasting of tool glamour, should normalization, the on-the-spot broadcasting of flexibility become one " luxurious grand banquet ".The restriction of the live means of News has hindered the propagation of information, live class News program is badly in need of new live means, shortcoming on the remedy technology, allow people's livelihood theory deeply be presented, the application of wireless communication networks transmission technology is undoubtedly a kind of brand-new selection, it is live that this technology is applied to News, can effectively remedy the technical deficiency of traditional live means, and expand and extend the mode of propagation that makes new advances.
Summary of the invention
The objective of the invention is to propose a kind of terminal of utilizing wireless communication networks to realize television news live broadcast, this terminal is connected with professional camera, being connected media server with the Internet by wireless communication networks realizes the very first time of scene information is reported, improve the broadcast efficient of live news, effectively promoted the news value that TV news broadcasts; Both ensure the quality of broadcast items, greatly saved again the high expense of using mobile control room and leased satellite.
To achieve these goals, technical scheme of the present invention is, a kind of terminal of utilizing wireless communication networks to realize television news live broadcast, comprise: housing, housing be provided with indicator gate, HD/SD SDI look audio interface, simulation look audio interface, be used for providing the encoder power supply the encoder mains switch, be used for signal lamp and the network interface of reaction wireless telecommunications operating state; In housing, arrange respectively and be connected with the A/D change-over circuit around central processing unit, the video encoding device, TS flows multiplexer, the TCP/IP wrapper, card of surfing Internet, described card of surfing Internet is connected with central processing unit by USB interface, described video/audio signal is looked audio interface or simulation from HD/SD SDI and is looked audio interface and enter and deliver to the A/D change-over circuit, the A/D change-over circuit is sent the digital video-audio signal into the video encoding device, the video/audio signal of video encoding device after with compressed encoding sent into the TS stream multiplexer that produces the TS data flow, and the TCP/IP wrapper that the TS data flow is packaged into the IP packet sent into the TS data flow by TS stream multiplexer.
Described video encoding device is to adopt the H.264 encoder of compressed encoding form, cbr (constant bit rate) coded system or variable bitrate coding mode, or adopts the encoder of MPEG-4 compressed encoding form, cbr (constant bit rate) coded system or variable bitrate coding mode.
Described video encoding device is the digital video-audio signal compression coding to be generated code check to be not less than 128Kbps, Phase Alternation Line system, resolution be the encoder of the SD audiovisual information of 720*576.
Described video encoding device is the digital video-audio signal compression coding to be generated code check to be not less than 128Kbps, TSC-system, resolution be the encoder of the SD audiovisual information of 720*480.
Described video encoding device is the digital video-audio signal compression coding to be generated code check is not less than 128Kbps, HD 720p, resolution is the encoder of the high resolution video and audio information of 1280*720.
Described video encoding device is the digital video-audio signal compression coding to be generated code check is not less than 128Kbps, HD 1080i, resolution is the encoder of the high resolution video and audio information of 1920*1080.
Described video encoding device is the digital video-audio signal compression coding to be generated code check is not less than 128Kbps, HD 1080p, resolution is the encoder of the high resolution video and audio information of 1920*1080.
Described card of surfing Internet is one or more, and each card of surfing Internet is connected with central processing unit by USB interface respectively.
Described a plurality of card of surfing Internet is the card of surfing Internet of heterogeneous networks.
Described a plurality of card of surfing Internet includes a Wi-Fi adapter, and the Wi-Fi adapter is connected with central processing unit by USB interface.
The present invention to the contribution of prior art is:
Live broadcast device of the present invention has substituted most of function of satellite transmission car, the convenient use simple in structure, live cost is low, institute is restricted few, in news spot, one ace reporter and shooting just can be finished live, this with the live team of setting up tens people, set out mobile control room and compare, greatly saved manpower, material resources and financial resources.
The present invention is the in-depth application of wireless network transmission technology, there is the place of signal to need not mobile control room and just can carries out net cast, it has broken through the restriction of time, region, no matter when and where media event occurs in, the reporter scene that can arrive in the very nick of time, launch net cast, greatly strengthened live ageingly, live glamour can farthest be shown.
Below in conjunction with embodiment and accompanying drawing the present invention is done a detailed description.
Description of drawings
Fig. 1 is the electrical block diagram of terminal of the present invention.
Embodiment
Embodiment:
A kind of terminal embodiment that utilizes wireless communication networks to realize television news live broadcast, referring to Fig. 1, described terminal comprises: housing, be provided with the window of display 1 at housing, HD/SD SDI looks audio interface 2, audio interface 3 is looked in simulation, be used for providing the encoder mains switch 4 of encoder power supply, the signal lamp 5 and the network interface 6 that are used for reaction wireless telecommunications operating state, in housing, arrange respectively and be connected with A/D change-over circuit 8 around central processing unit 7, video encoding device 9, TS flows multiplexer 10, TCP/IP wrapper 11 and card of surfing Internet 12, described card of surfing Internet is connected with central processing unit by usb 13, video/audio signal is looked audio interface or simulation from HD/SD SDI and is looked audio interface and enter and deliver to the A/D change-over circuit, the A/D change-over circuit is sent the digital video-audio signal into the video encoding device, the video/audio signal of video encoding device after with compressed encoding sent into TS stream multiplexer and produced the TS data flow, and TS stream multiplexer will produce the TS data flow and send into the TCP/IP wrapper and be packaged into the IP packet.
Described video encoding device is to adopt the H.264 encoder of compressed encoding form, cbr (constant bit rate) coded system or variable bitrate coding mode, or adopts the encoder of MPEG-4 compressed encoding form, cbr (constant bit rate) coded system or variable bitrate coding mode.
Described video encoding device is that the digital video-audio signal compression coding is generated that code check equals or be not less than 128Kbps, Phase Alternation Line system, resolution is SD (single-definition) audiovisual information of 720*576; Or the digital video-audio signal compression coding is generated that code check equals or be not less than 128Kbps, TSC-system, resolution is the SD audiovisual information of 720*480; Or with the digital video-audio signal compression coding generate code check equal or be not less than 128Kbps, HD 720p, resolution is high definition (high definition) audiovisual information of 1280*720; Or with the digital video-audio signal compression coding generate code check equal or be not less than 128Kbps, HD 1080i, resolution is the high resolution video and audio information of 1920*1080; Or with the digital video-audio signal compression coding generate code check equal or be not less than 128Kbps, HD 1080p, resolution is the encoder of the high resolution video and audio information of 1920*1080.
In order to improve data transfer bandwidth, therefore, described card of surfing Internet is set to a plurality of, a plurality of cards of surfing Internet are connected with central processing unit by USB interface respectively, and many card bindings also are divided into the IP packet and equate several parts or be divided into unequal several parts according to card of surfing Internet signal power by load balancing and carry out respectively transfer of data.Data transmission terminal can be supported 16 card of surfing Internet binding transmission simultaneously.The transmission of many card binding datas can the Effective Raise delivery flow rate, ensures higher encoder bit rate data transfer, raising picture broadcast quality.
For terminal and wireless router are nearby connected, make terminal pass through the Internet transmission of information, described card of surfing Internet includes a Wi-Fi adapter, and the Wi-Fi adapter is connected with central processing unit by USB interface.
For ensureing transmission stability and being connected uninterruptedly, prevent from causing card of surfing Internet to go offline because physical connection is bad, so, increase fixedly card of surfing Internet of buckle.
Described central processing unit can ensure one or more card of surfing Internet and wireless communication networks UNICOM by selecting circuit, has both supported the card of surfing Internet of arbitrary port to work alone and also can support multiport, and namely a plurality of network cards of surfing Internet are worked simultaneously.
Card of surfing Internet is supported one of wireless network transmissions standards such as International Telecommunications Union definite W-CDMA, CDMA2000, TD-SCDMA, TD-LTE, WiMAX.
Described portable terminal embeds linux operating system, built-in multiple card of surfing Internet drives, such as the E180 of Huawei, in emerging MF110 etc., employed card of surfing Internet is supported one of wireless network transmissions standards such as International Telecommunications Union definite W-CDMA, CDMA2000, TD-SCDMA, TD-LTE, WiMAX, and terminal can seamlessly be supported.
Described encoder mains switch is the switch of powering separately for portable terminal inside codec, the encoder mains switch is mainly used in mobile terminal signal and is in state to be broadcast, but require wireless communication networks to connect in real time, temporarily do not need to carry out under the specific environment of transfer of data.Can ensure that encoder quits work, and temporarily stops the output stream amount under the state that wireless communication networks connects by closing the encoder power supply, thereby reach the function of saving the flow rate.In case need the transmission picture, behind the unlatching encoder mains switch, can use the audiovisual information after the network connection of having set up is directly transmitted compressed encoding, saved the stand-by period of setting up network connection, guaranteed the real-time of live news.
Described portable terminal is supported MPEG-4 and coded format H.264, can generate height, the SD video/audio information of the above code check of 128Kbps.
Described signal lamp is to comprise that Power supply, wireless network connect and the indicator light of transfer of data, and the signal lamp of feedback is the Tally indicator light.
Has power supply indicator can provide portable terminal to power, and whether whether normal wireless network connection indicator light connected wireless communication networks for the reminding user portable terminal? does is the transfer of data indicator light used for the reminding user portable terminal and whether carry out transfer of data by wireless communication networks?
Described Tally indicator light is to pass media server for the video/audio data flow after will compressing back by wireless communication networks, the signal lamp of feedback when broadcast the studio.The Tally indicator light has warning function, and the data that can remind this portable terminal of reporter and photographer to pass back are broadcasted, and keep normal operating state.
Portable terminal is supported fixed code stream encryption and variable code stream encryption dual mode.Can with the broadcast effect requirements different constant transmissions code checks be set according to the size of network special line bandwidth.Also can adopt the variable bit rate set-up mode, because there is the situation of signal fluctuation in wireless communication networks, for guaranteeing final broadcast quality, codec adopts the variable bit rate mode to carry out video encoding, can be according to the strong and weak video encoding code check of adjusting of wireless network signal, encode, effectively guarantee the quality of Internet Transmission, thereby guarantee to broadcast effect.Avoid under the cbr (constant bit rate) transmission means signal fluctuation to cause too greatly mass data packet loss phenomenon to occur.
The display of described portable terminal setting is liquid crystal display screen, can show whether card of surfing Internet connects, current card of surfing Internet signal strength signal intensity, encoder bit rate, network upload code check and special line address and port etc.
Portable terminal can be supported multilingual, simplified form of Chinese Character, Chinese-traditional and english system.
Claims (7)
1. terminal of utilizing wireless communication networks to realize television news live broadcast, comprise: housing arranges at housing and to include indicator gate, HD/SD SDI and look signal lamp and the network interface that audio interface, simulation are looked audio interface, are used for reaction wireless telecommunications operating state; It is characterized in that, on housing, also be provided be used to the encoder mains switch that the encoder power supply is provided, in housing, arrange respectively and be connected with the A/D change-over circuit around central processing unit, the video encoding device, TS flows multiplexer, the TCP/IP wrapper, card of surfing Internet, described card of surfing Internet is connected with central processing unit by USB interface, described video/audio signal is looked audio interface or simulation from HD/SD SDI and is looked audio interface and enter and deliver to the A/D change-over circuit, the A/D change-over circuit is sent the digital video-audio signal into the video encoding device, the video/audio signal of video encoding device after with compressed encoding sent into the TS stream multiplexer that produces the TS data flow, and the TCP/IP wrapper that the TS data flow is packaged into the IP packet sent into the TS data flow by TS stream multiplexer; Described terminal embeds linux operating system, described card of surfing Internet is a plurality of, a plurality of cards of surfing Internet are the card of surfing Internet of heterogeneous networks, described a plurality of card of surfing Internet includes a Wi-Fi adapter, the Wi-Fi adapter is connected with central processing unit by USB interface, and many card bindings also are divided into the IP packet and equate several parts or be divided into unequal several parts according to card of surfing Internet signal power by load balancing and carry out respectively transfer of data.
2. a kind of terminal of utilizing wireless communication networks to realize television news live broadcast according to claim 1, it is characterized in that, described video encoding device is to adopt the H.264 encoder of compressed encoding form, cbr (constant bit rate) coded system or variable bitrate coding mode, or adopts the encoder of MPEG-4 compressed encoding form, cbr (constant bit rate) coded system or variable bitrate coding mode.
3. a kind of terminal of utilizing wireless communication networks to realize television news live broadcast according to claim 1, it is characterized in that described video encoding device is the digital video-audio signal compression coding to be generated code check to be not less than 128Kbps, Phase Alternation Line system, resolution be the encoder of the SD audiovisual information of 720*576.
4. a kind of terminal of utilizing wireless communication networks to realize television news live broadcast according to claim 1, it is characterized in that described video encoding device is the digital video-audio signal compression coding to be generated code check to be not less than 128Kbps, TSC-system, resolution be the encoder of the SD audiovisual information of 720*480.
5. a kind of terminal of utilizing wireless communication networks to realize television news live broadcast according to claim 1, it is characterized in that described video encoding device is the digital video-audio signal compression coding to be generated code check is not less than 128Kbps, HD 720p, resolution is the encoder of the high resolution video and audio information of 1280*720.
6. a kind of terminal of utilizing wireless communication networks to realize television news live broadcast according to claim 1, it is characterized in that described video encoding device is the digital video-audio signal compression coding to be generated code check is not less than 128Kbps, HD 1080i, resolution is the encoder of the high resolution video and audio information of 1920*1080.
7. a kind of terminal of utilizing wireless communication networks to realize television news live broadcast according to claim 1, it is characterized in that described video encoding device is the digital video-audio signal compression coding to be generated code check is not less than 128Kbps, HD 1080p, resolution is the encoder of the high resolution video and audio information of 1920*1080.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010519879.2A CN101964905B (en) | 2010-10-11 | 2010-10-26 | Terminal for realizing television news live broadcast through wireless communication network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010502617.5 | 2010-10-11 | ||
| CN201010502617 | 2010-10-11 | ||
| CN201010519879.2A CN101964905B (en) | 2010-10-11 | 2010-10-26 | Terminal for realizing television news live broadcast through wireless communication network |
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| CN101964905A CN101964905A (en) | 2011-02-02 |
| CN101964905B true CN101964905B (en) | 2013-03-13 |
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| CN201010519879.2A Active CN101964905B (en) | 2010-10-11 | 2010-10-26 | Terminal for realizing television news live broadcast through wireless communication network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102811382B (en) * | 2012-08-08 | 2016-03-23 | 无锡天脉聚源传媒科技有限公司 | A kind of method of multimedia signal acquisition and device |
| CN104703051B (en) * | 2014-01-06 | 2018-06-05 | 杭州海康威视数字技术股份有限公司 | Code stream sending method and device |
| CN104702518B (en) * | 2015-03-05 | 2017-12-19 | 安徽清新互联信息科技有限公司 | A kind of more card router apparatus and its data transmission method based on wireless network |
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| CN201174734Y (en) * | 2008-04-08 | 2008-12-31 | 上海锐极电子科技有限公司 | Image digital transmission terminal for wireless high-speed wideband network |
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| CA2428946C (en) * | 2000-11-14 | 2010-06-22 | Scientific-Atlanta, Inc. | Networked subscriber television distribution |
| WO2009004567A2 (en) * | 2007-07-03 | 2009-01-08 | Koninklijke Philips Electronics N.V. | Video transmission systems |
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| CN2817259Y (en) * | 2005-08-16 | 2006-09-13 | 天津七所信息技术有限公司 | Flow media coding machine |
| CN201174734Y (en) * | 2008-04-08 | 2008-12-31 | 上海锐极电子科技有限公司 | Image digital transmission terminal for wireless high-speed wideband network |
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