CN101964905A - 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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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 wireless communication networks that utilizes and realize the live terminal of TV news, 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 the high expense of using mobile control room and leased satellite again.
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, though can realize on-the-spot first-hand report, also has many unfavorable factors.
The one, live equipment cost height, influencing factor is many.What live people's livelihood journalist 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 has 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 multidigit technical staff such as instructor in broadcasting, editor, before live, need to carry out strict equipment debugging and preparation, consuming time longer, for burst news, the reporter is difficult to get the primary scene.The spatial limitation that mobile control room is subjected to is many, and narrow space or region span are bigger, all is not suitable for broadcasting live.Therefore, people's livelihood news is when broadcasting live, time, region, content to the live selected topic all 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 or the like, and, but be difficult to make fast reaction for the media event of burst.
The 2nd, the on-the-spot broadcasting reaction speed is slow, and live telecast can't embody the medium 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 to have become " broadcasting " in fact.Have only sound not have the sorry of picture in order to remedy, editing saving can be selected legman's photo, or the mode of shop " picture not long ago " to handle line live, the reporter interviews shooting after live end, or sends photo site to the Internet bar, use during living broadcast of programs for next period, perhaps carry out play-by-play in second day program, 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 technical elements such as live equipment, signal transmission has fettered in the people's livelihood 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 people's livelihood live news means has hindered the propagation of information, live class people's livelihood 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, this technology is applied to people's livelihood live news, can effectively remedies 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 wireless communication networks that utilizes and realize the live terminal of TV news, this terminal is connected with professional camera, realize the very first time of scene information is reported by wireless communication networks and Internet connection media server, 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 the high expense of using mobile control room and leased satellite again.
To achieve these goals, technical scheme of the present invention is, a kind of wireless communication networks that utilizes is realized the live terminal of TV news, comprise: housing, housing are provided with indicator gate, HD/SD SDI looks audio interface, simulates the encoder mains switch of looking audio interface, being used to provide the encoder power supply, signal lamp and the network interface that is used to react the wireless telecommunications operating state; In housing, be provided with 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 bit rate coded system, or adopts the encoder of MPEG-4 compressed encoding form, cbr (constant bit rate) coded system or variable bit rate coded system.
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, saved manpower, material resources and financial resources greatly.
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, strengthened live ageingly greatly, 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 wireless communication networks that utilizes is realized the live terminal embodiment of TV news, referring to Fig. 1, described terminal comprises: housing, housing is provided with the window of display 1, HD/SD SDI looks audio interface 2, audio interface 3 is looked in simulation, be used to provide the encoder mains switch 4 of encoder power supply, be used to react the signal lamp 5 and the network interface 6 of wireless telecommunications operating state, in housing, be provided with 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 bit rate coded system, or adopts the encoder of MPEG-4 compressed encoding form, cbr (constant bit rate) coded system or variable bit rate coded system.
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 transfer of data respectively.Data transmission terminal can be supported 16 card of surfing Internet binding transmission simultaneously.The transmission of many card binding datas can effectively improve delivery flow rate, ensures the transmission of higher encoder bit rate data, improves the picture broadcast quality.
For terminal and wireless router are nearby connected, make terminal transmit information by Internet, 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 to cause card of surfing Internet to go offline because of physical connection is bad, so, increase the snap fit card of surfing Internet.
Described central processing unit can guarantee that one or more card of surfing Internet and wireless communication networks UNICOM be arranged by selecting circuit, has both supported the card of surfing Internet of arbitrary port to work alone and also can support multiport, and promptly 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 to be used for the independent powered switch of the inner codec of portable terminal, the encoder mains switch is mainly used in the portable 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 dateout flow 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 of having set up connects direct transmission compressed encoding, saved and set up the stand-by period that network connects, 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 power supply, wireless network connect and the indicator light of transfer of data, and the signal lamp of feedback is the Tally indicator light.
Is power supply indicator can provide portable terminal to power, and whether normal wireless network connection indicator light used to remind customer mobile terminal whether to connect wireless communication networks? is the transfer of data indicator light used to remind customer mobile terminal whether to carry out transfer of data by wireless communication networks?
Described Tally indicator light is to be used for passing the video/audio data flow after the compression back media server 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 Network Transmission, thereby guarantee to broadcast effect.Avoid under the cbr (constant bit rate) transmission means signal fluctuation to cause mass data packet loss phenomenon to take place too greatly.
The display of described portable terminal setting is a 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 (10)
1. one kind is utilized wireless communication networks to realize the live terminal of TV news, comprise: housing, setting includes indicator gate on housing, HD/SD SDI looks audio interface, simulates signal lamp and the network interface looking audio interface, be used to react the wireless telecommunications operating state; It is characterized in that, on housing, also be provided with the encoder mains switch that is used to provide the encoder power supply, in housing, be provided with 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.
2. a kind of wireless communication networks that utilizes according to claim 1 is realized the live terminal of TV news, 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 bit rate coded system, or adopts the encoder of MPEG-4 compressed encoding form, cbr (constant bit rate) coded system or variable bit rate coded system.
3. a kind of wireless communication networks that utilizes according to claim 1 is realized the live terminal of TV news, 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 wireless communication networks that utilizes according to claim 1 is realized the live terminal of TV news, 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 wireless communication networks that utilizes according to claim 1 is realized the live terminal of TV news, 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 wireless communication networks that utilizes according to claim 1 is realized the live terminal of TV news, 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 wireless communication networks that utilizes according to claim 1 is realized the live terminal of TV news, 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.
8. a kind of wireless communication networks that utilizes according to claim 1 is realized the live terminal of TV news, it is characterized in that 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.
9. a kind of wireless communication networks that utilizes according to claim 8 is realized the live terminal of TV news, it is characterized in that described a plurality of cards of surfing Internet are the card of surfing Internet of heterogeneous networks.
10. a kind of wireless communication networks that utilizes according to claim 8 is realized the live terminal of TV news, it is characterized in that described a plurality of cards of surfing Internet include a Wi-Fi adapter, and the Wi-Fi adapter is connected with central processing unit by USB interface.
Priority Applications (1)
| 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 true CN101964905A (en) | 2011-02-02 |
| CN101964905B CN101964905B (en) | 2013-03-13 |
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| CN201010519879.2A Expired - Fee Related CN101964905B (en) | 2010-10-11 | 2010-10-26 | Terminal for realizing television news live broadcast through wireless communication network |
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Cited By (3)
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| CN102811382A (en) * | 2012-08-08 | 2012-12-05 | 无锡天脉聚源传媒科技有限公司 | Method and device for collecting multimedia signals |
| CN104702518A (en) * | 2015-03-05 | 2015-06-10 | 安徽清新互联信息科技有限公司 | Wireless network-based multi-card router device and data transmission method thereof |
| CN104703051A (en) * | 2014-01-06 | 2015-06-10 | 杭州海康威视数字技术股份有限公司 | Code stream transmitting method and code stream transmitting device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102811382A (en) * | 2012-08-08 | 2012-12-05 | 无锡天脉聚源传媒科技有限公司 | Method and device for collecting multimedia signals |
| 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 |
| CN104703051A (en) * | 2014-01-06 | 2015-06-10 | 杭州海康威视数字技术股份有限公司 | Code stream transmitting method and code stream transmitting 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 |
| CN104702518A (en) * | 2015-03-05 | 2015-06-10 | 安徽清新互联信息科技有限公司 | Wireless network-based multi-card router device and data transmission method thereof |
| 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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