CN101414924A - Sectorization broadcast method using network transmission - Google Patents
Sectorization broadcast method using network transmission Download PDFInfo
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Abstract
The invention provides an area-broadcasting method by using network transmission. The invention discloses an area-broadcasting method by using a computer network to transmit audio frequency data, and the method solves the problems that the traditional area-broadcast has finite transmission distance and complex management. In the method, an area-broadcast front end broadcasting system and an area-broadcast terminal are accessed into the computer network; the front end broadcasting system uses multicast or UDP broadcast to transmit digital audio frequency data to each terminal, and the audio frequency data can reduce the occupation of bandwidth by adopting a compression coding form.
Description
Technical field
The present invention relates to netcasting, relate in particular to a kind of sectorization broadcast method and architecture thereof by the computer network transmitting audio data.
Background technology
In environment such as school, intelligent building and exhibition, Public Address system is absolutely necessary, and need carry out the broadcasting of different content simultaneously in these local different target zones, reaches the requirement of sectorization broadcast.
Traditional pattern is to be connected respectively to each regional audio amplifier by the front end broadcast system that is positioned at the broadcasting station, constitute hub-and-spoke configuration, the construction trouble, divide and adjust subregion and just need to adjust circuit, no matter voice signal is to adopt level transmissions or power delivery, all has problems such as transmission range, decay and interference.Invented sectorization broadcast technology afterwards based on frequency modulation technology, solved the problem of sectorization broadcast to a certain extent: be exactly to adopt coaxial cable to be connected to each target area, be routed to the control cable of each target area simultaneously, the front end broadcast system carries out the frequency modulation modulation to the broadcast singal of zones of different on different channel, broadcast to the coaxial cable net; At each subregion, single-chip microcomputer is according to the control information of transmitting on the control cable, and control FM receiver module receives the FM broadcasting of specifying frequency, by the power amplifier playback.
This Technology Need is laid 2 kinds of holding wires---coaxial cable and Serial Control line, and wiring is complicated, and coverage distance is limited.Special equipment to the front end broadcast system requires height simultaneously, and each subregion all needs a frequency interleaved modulation modulator correspondence.
We combine network technology with the requirement of sectorization broadcast, developed the sectorization broadcast technology based on computer network.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art and the method and the architecture thereof that propose to realize by computer network sectorization broadcast, and the implementation method of front end broadcast system.
The technical solution used in the present invention is as follows:
Sectorization broadcast technology based on computer network comprises 3 major parts, broadcasts the front end broadcast system of sectorization broadcast, receives the sectorization broadcast terminal of sectorization broadcast content and playback, and the computer network that connects front end broadcast system and sectorization broadcast terminal.
Crucial innovation of the present invention is that the front end broadcast system of sectorization broadcast utilizes computer network that digitized audio stream data is transferred to each terminal, and terminal is carried out playback after receiving data.
Described computer network is characterised in that and adopts ICP/IP protocol on the network layer, comprises IPv4 and IPv6 version, on this condition basis, can support the standard and the agreement of various physical layers and data link layer.Described computer network can connect with various network device, comprises switch, router and hub etc., comes the coverage distance and the number of ports of extended network.If described computer network adopts router, then router should be supported the Multicast routing function.Utilize the voice data after the Network Transmission digitlization, do not have the restriction of transmission range, and do not have problems such as decay.
The front end broadcast system and the terminal of described sectorization broadcast all insert described computer network, and network interface adopts the physical layer standard and the data link layer protocol of access point, and moves ICP/IP protocol in the above.
Described voice data comprises audio file, also can be that audio signal is through the data after the digitized processing
Described voice data can be a unpacked format, also can be the compressed encoding form, and wherein the compressed encoding form includes but not limited to WAY, MP3, ASF, midi, wma, AAC, RM etc.Adopt unpacked format, low to the disposal ability requirement of terminal, but it is big to take the computer network bandwidth, and the memory space that takies at the front end broadcast system requires high to the network handling capacity of terminal greatly.Adopt compressed format, can significantly reduce, make the sectorization broadcast number that can carry out simultaneously more, but require high the disposal ability of terminal to the taking of computer network bandwidth.
Described audio stream data transmission method is the normal play progress according to audio stream, extracts corresponding data, and the packing back adopts the Multicast mode to transmit to computer network.Each subregion transmits an audio stream, adopts destination address and the destination interface of Multicast to determine.For a subregion, no matter comprise what terminals like this, only need take one road audio stream bandwidth of computer network, and the bandwidth of computer network can be held a plurality of subregions.
The reception data of described sectorization broadcast terminal are meant the audio stream data that terminal receives packing according to the Multicast destination address and the destination interface of affiliated subregion correspondence from the computer network.
Described terminal is carried out replayed section and is comprised the packing audio data stream from computer network is unpacked, if the audio data stream of compression, then decode according to compressed format, decoded data are carried out conversion and are generated analog signal, and carry out power amplification driving loudspeaker and can emit sound.If be non-audio compressed data stream, then Direct Transform generates analog signal, and carries out power amplification driving loudspeaker and can emit sound.
If front end broadcast system and terminal all are positioned at a subnet, not needing to carry out route just can communicate by letter, this patent provides second kind of transmission method: described audio stream data transmission method is the normal play progress according to audio stream, extract corresponding data, the packing back adopts UDP Broadcast mode to transmit to network.Each subregion transmits an audio stream, adopts the purpose udp port of Broadcast to determine.For a subregion, no matter comprise what terminals like this, only need take one road audio stream bandwidth of computer network, and the enormous bandwidth of computer network can be held very many subregions.
The transmission means of UDP Broadcast is simpler to the ICP/IP protocol requirement of terminal, does not need to support Multicast.
Description of drawings
Fig. 1 is based on the sectorization broadcast of network and forms structure chart;
Fig. 2 adopts the Multicast mode to carry out the process exploded view of sectorization broadcast;
Fig. 3 adopts UDP Broadcast mode to carry out the process exploded view of sectorization broadcast.
Embodiment
Below in conjunction with accompanying drawing enforcement of the present invention is further described:
As shown in Figure 1, be composition structure chart of the present invention, the front end broadcast system and the terminal of sectorization broadcast all are linked in the computer network by network interface.
Computer network can connect and expands by various network device, comprises switch, router and hub etc.Computer network can carry ICP/IP protocol, comprises IPv4 and IPv6 version.If front end broadcast system and terminal be not in an IP subnet, the router or the layer-3 switch that then connect them must be supported the multicast route.
Fig. 2 utilizes multicast to carry out the functional block diagram of sectorization broadcast.
When the front end broadcast system carries out a sectorization broadcast, read digitized audio file, extract data according to playback rate and order and pack, carry out multicast then and broadcast on the computer network.The front end broadcast system can also received audio signal, carries out after digital coding handles, and the data of generation are packed, and carry out multicast then and broadcast on the computer network.The combination of Multicast purpose IP address and destination interface is unique corresponding with a broadcasting subregion.
Voice data transmits on computer network in the multicast mode, can be connected to come extended range by switch, router and hub etc.Computer network should possess sectorization broadcast multicast is transferred to the ability that all belong to the terminal of this subregion.
Configuration belongs to the terminal of this sectorization broadcast and multicast is intercepted reception, multicast purpose IP address and destination interface that purpose IP address of intercepting and destination interface are set at this subregion.After terminal receives and specifies multicast, through unpacking, playback process such as decoding and digital to analog conversion, generate audio signal.
Under changing a sectorization broadcast terminal, during subregion, only need to revise it and intercept purpose IP address and the destination interface of multicast, change the purpose IP address and the destination interface of new adding subregion correspondence into.
Fig. 3 utilizes UDP broadcast to carry out the functional block diagram of sectorization broadcast, be applicable to that sectorization broadcast front end broadcast system and each terminal are all in a subnet situation of computer network, be on the voice data broadcast mode different with Fig. 2 difference, adopted the UDPbroadcast mode to broadcast voice data to computer network.The purpose IP address of UDP broadcast is exactly the broadcasting IP address of this subnet, and different broadcasting subregions is all the same, but the destination interface of UDP broadcast has nothing in common with each other, to distinguish different subregions.
Voice data transmits on computer network in UDP broadcast mode, can be connected to come extended range with hub etc. by switch.Computer network should possess sectorization broadcast UDP broadcast is transferred to the ability that all belong to the terminal of this subregion.
Configuration belongs to the terminal of this sectorization broadcast UDP broadcast is intercepted reception, and the destination interface of intercepting is set at the destination interface of the UDP broadcast of this subregion.After terminal receives and specifies UDP broadcast, through unpacking, playback process such as decoding and digital to analog conversion, generate audio signal.
Under changing a sectorization broadcast terminal, during subregion, only need to revise its UDP broadcast destination interface of intercepting, change the destination interface of new adding subregion correspondence into.
Claims (6)
1. sectorization broadcast method that utilizes Network Transmission, comprise sectorization broadcast front end broadcast system, sectorization broadcast terminal and the computer network that connects front end and terminal, it is characterized in that: sectorization broadcast front end broadcast system sends on the computer network through after the digitized processing digitized audio file data or audio signal, the sectorization broadcast terminal receives voice data by computer network, and carry out playback, multicast mode and UDPBroadcast mode are adopted in transmission and the acceptance of audio file data in computer network.
2, broadcasting method according to claim 1 is characterized in that, sectorization broadcast adopts the ICP/IP protocol transmission on computer network, and ICP/IP protocol comprises IPv4 and IPv6 version.
3, broadcasting method according to claim 1, it is characterized in that, sectorization broadcast front end broadcast system can be supported a plurality of subregions, purpose IP address and destination interface when each subregion transmits according to voice data multicast are distinguished, or distinguish according to the destination interface of UDPbroadcast, sectorization broadcast front end broadcast system sends the multicast with various objectives IP address and destination interface simultaneously, the UDPBroadcast that perhaps has the various objectives port, realization is to the support of a plurality of broadcasting subregions, wherein:
When adopting multicast technical transmission voice data, different broadcasting subregions is confirmed jointly by purpose IP address and the destination interface of multicast, purpose IP address is a Class D IP address, purpose IP address and the destination interface of setting sectorization broadcast terminal reception multicast are multicast purpose IP address and the destination interface of broadcasting subregion under it, to receive the audio content of this subregion;
When adopting the udp broadcast transmitting audio data, different broadcasting subregions is confirmed by the destination interface of broadcasting, purpose IP address all is the broadcasting IP address of this subnet, set the sectorization broadcast terminal and receive the destination interface of destination interface, to receive the audio content of this subregion for the UDP broadcast of subregion under it.
4, broadcasting method according to claim 1 is characterized in that, the broadcasting subregion under the sectorization broadcast terminal is set up or adjusts to, and step is as follows:
During by multicast transmission data, revise the reception parameter of sectorization broadcast terminal to multicast, promptly purpose IP address and destination interface make terminal switch to another subregion;
During by UDP broadcast transmission data, revise the sectorization broadcast terminal, make terminal switch to another subregion the udp port that UDP broadcast receives.
5, method according to claim 1, it is characterized in that, the sectorization broadcast transmitting audio data is a digitized forms, and the voice data that is transmitted is the audio file after the digitlization, or directly simulated audio signal is carried out the voice data that digitlization obtains.
6, method according to claim 5 is characterized in that, audio file or carry out the audio signal of digitized processing all adopts the compressed encoding form to reduce taking the computer network bandwidth; The compressed encoding form that is adopted includes but not limited to WAV, midi, MP3, ASF, AAC, RM, WMA form.
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| CN2008101592701A CN101414924B (en) | 2008-11-27 | 2008-11-27 | Sectorization broadcast method using network transmission |
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| CN2008101592701A CN101414924B (en) | 2008-11-27 | 2008-11-27 | Sectorization broadcast method using network transmission |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105556491A (en) * | 2013-07-23 | 2016-05-04 | 斯卡拉株式会社 | Transmission-side computer, reception-side computer, and method and computer program executed by said computers |
| CN107528653A (en) * | 2017-09-04 | 2017-12-29 | 成都德芯数字科技股份有限公司 | Broadcast area control method and device |
| CN111935595A (en) * | 2020-08-03 | 2020-11-13 | 诠航科技有限公司 | Audio output control method and device and distributed sound control device |
| CN113470336A (en) * | 2021-07-14 | 2021-10-01 | 深圳市朗强科技有限公司 | Wireless sending method, receiving method and equipment of control instruction |
| CN113938236A (en) * | 2021-09-22 | 2022-01-14 | 广州市迪士普音响科技有限公司 | IP broadcasting method, system and equipment with automatic collecting, broadcasting and pushing functions |
| CN115589323A (en) * | 2022-10-18 | 2023-01-10 | 湖南大学 | DLDoS attack detection and mitigation method based on machine learning in data plane |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100438499C (en) * | 2005-04-30 | 2008-11-26 | 华为技术有限公司 | Group broadcast program repeating processing method and connecting device for multicast repeat |
| CN1794673B (en) * | 2005-12-27 | 2011-11-30 | 王卫亚 | Method of constructing local network using IP protocol |
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2008
- 2008-11-27 CN CN2008101592701A patent/CN101414924B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105556491A (en) * | 2013-07-23 | 2016-05-04 | 斯卡拉株式会社 | Transmission-side computer, reception-side computer, and method and computer program executed by said computers |
| CN107528653A (en) * | 2017-09-04 | 2017-12-29 | 成都德芯数字科技股份有限公司 | Broadcast area control method and device |
| CN111935595A (en) * | 2020-08-03 | 2020-11-13 | 诠航科技有限公司 | Audio output control method and device and distributed sound control device |
| CN113470336A (en) * | 2021-07-14 | 2021-10-01 | 深圳市朗强科技有限公司 | Wireless sending method, receiving method and equipment of control instruction |
| CN113938236A (en) * | 2021-09-22 | 2022-01-14 | 广州市迪士普音响科技有限公司 | IP broadcasting method, system and equipment with automatic collecting, broadcasting and pushing functions |
| CN113938236B (en) * | 2021-09-22 | 2023-08-25 | 广州市迪士普音响科技有限公司 | IP broadcasting method, system and equipment with automatic picking, broadcasting and pushing functions |
| CN115589323A (en) * | 2022-10-18 | 2023-01-10 | 湖南大学 | DLDoS attack detection and mitigation method based on machine learning in data plane |
| CN115589323B (en) * | 2022-10-18 | 2024-04-02 | 湖南大学 | DLDoS attack detection and alleviation method based on machine learning in data plane |
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| CN101414924B (en) | 2011-07-06 |
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Effective date of registration: 20180816 Address after: 250101 S06 tower, 1036, Chao Lu Road, hi tech Zone, Ji'nan, Shandong. Patentee after: SHANDONG LANGCHAO YUNTOU INFORMATION TECHNOLOGY Co.,Ltd. Address before: 250014 No. 224 mountain road, Lixia District, Shandong, Ji'nan Patentee before: INSPUR ELECTRONIC INFORMATION INDUSTRY Co.,Ltd. |
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Address after: 250100 No. 1036 Tidal Road, Jinan High-tech Zone, Shandong Province, S01 Building, Tidal Science Park Patentee after: Inspur cloud Information Technology Co.,Ltd. Address before: 250101 S06 tower, 1036, Chao Lu Road, hi tech Zone, Ji'nan, Shandong. Patentee before: SHANDONG LANGCHAO YUNTOU INFORMATION TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20221011 Address after: 2nd floor, east of Cambridge International Plaza, No. 270, Gongqingtuan West Road, Zhangdian District, Zibo City, Shandong Province, 255000 Patentee after: Zibo Langchao Information Technology Co.,Ltd. Address before: 250100 No. 1036 Tidal Road, Jinan High-tech Zone, Shandong Province, S01 Building, Tidal Science Park Patentee before: Inspur cloud Information Technology Co.,Ltd. |
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