CN103152610A - China mobile multimedia broadcasting (CMMB) multiplexer (MUX) provided with Ethernet output interface - Google Patents
China mobile multimedia broadcasting (CMMB) multiplexer (MUX) provided with Ethernet output interface Download PDFInfo
- Publication number
- CN103152610A CN103152610A CN2013100416648A CN201310041664A CN103152610A CN 103152610 A CN103152610 A CN 103152610A CN 2013100416648 A CN2013100416648 A CN 2013100416648A CN 201310041664 A CN201310041664 A CN 201310041664A CN 103152610 A CN103152610 A CN 103152610A
- Authority
- CN
- China
- Prior art keywords
- interface
- unit
- asi
- output module
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a China mobile multimedia broadcasting (CMMB) multiplexer (MUX) provided with an Ethernet output interface. The CMMB MUX provided with the Ethernet output interface comprises a central processing unit (CPU), an internet protocol (IP) output module, a field programmable gate array (FPGA) unit and an asynchronous serial interface (ASI) input and output module. The CPU is used for receiving and packaging service data, generating a netlist and making a multiplex frame. The IP output module is connected with the CPU, and used for outputting the multiplex frame packaged as a packaged multiplexing stream (PMS) package in the format of user datagram protocol (UDP) with an Ethernet interface. The FPGA unit is connected with both the CPU and the ASI input and output module, used for driving the ASI input and output module and performing communication with the CPU. The ASI input and output module is connected with the FPGA unit, and used for receiving the service data through an ASI input interface and outputting the multiplex frame in the form of the PMS streams through an ASI output interface. Compared with a traditional MUX, the Ethernet output interface is additionally added, the PMS package packaged in the format of the UPD is output through the Ethernet, the transmission distance of the MUX is greatly increased, and the MUX is enabled to be applied to a wider range of working environments.
Description
Technical field
The present invention relates to CMMB (China Mobile Multimedia Broadcasting, China Mobile multimedia broadcasting) technical field, particularly relate to a kind of CMMB multiplexer with the Ethernet output interface.
Background technology
CMMB be the first set of China's independent research towards the system of the multiple mobile terminals such as mobile phone, notebook computer, utilize the S-band signal to realize that " world " one covers, whole nation roaming, support 25 cover TVs and 30 cover broadcast programs.In October, 2006, State Administration of Radio, Film and Television has formally been promulgated China Mobile multimedia broadcasting standard C MMB, it is the channel demodulation standard STiMi of research and development that this standard adopts broadcasting and TV, and mainly mobile digital TV and the audio signal towards portable sets such as mobile phone, PMP receives.By on June 2nd, 2010, CMMB was open-minded in 317 cities, the whole nation, and 22 provincial administrative units realize that the whole province is open-minded, and the city of completing present stage degree of depth covering requirement amounts to 108.
In the Mobile Multimedia Broadcasting originator system, the function of CMMB multiplexer is to complete the Information encapsulations such as audio frequency, video, data, electron service instruction, urgent broadcast, can transmit on mobile multimedia broadcasting channel.In order to instruct industry development, country has issued GY/T220.8-2008 " Mobile Multimedia Broadcasting the 8th part: multiplexer specification requirement and method of measurement ", is used for exploitation, production, application, measurement and the operation maintenance of CMMB multiplexer.
Existing multiplexer, GY/T220.8-2008 " Mobile Multimedia Broadcasting the 8th part: multiplexer specification requirement and the method for measurement " standard of substantially issuing according to country.Business datum to inputs such as television broadcasting, sound radio, urgent broadcast, electron service instruction, data broadcast, encryption authorization, control information tables is carried out multiplexing, output contains the PMS stream (Packaged Multiplexing Stream, packaging multiplexing code stream) of multiplexed frame.Its structure as shown in Figure 1.
In existing CMMB equipment, the CMMB multiplexer is with at least 4 road ASI interfaces (Asynchronous Serial Interface, Asynchronous Serial Interface) form is exported, this single interface shape and ASI interface have the characteristics of transmission range restriction, make the applied environment of multiplexer be subject to certain limitation.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of CMMB multiplexer with the Ethernet output interface, is used for the not strong problem of practicality of the multiplexer existence of solution available technology adopting ASI output interface.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of CMMB multiplexer with the Ethernet output interface comprises CPU element, IP output module, FPGA unit and ASI input/output module;
Described CPU element, it is used for receiving business datum, and business datum is encapsulated, generates the net table and makes multiplexed frame;
Described IP output module, it is connected with described CPU element, exports by Ethernet interface with the UDP form for the multiplexed frame that will be encapsulated as the PMS bag;
Described FPGA unit, it all is connected with described CPU element and described ASI input/output module, is used for driving described ASI input/output module, and is used for communicating with described CPU element;
Described ASI input/output module, it is connected with described FPGA unit, and comprises ASI input interface and ASI output interface, be used for by described ASI input interface reception business datum, and by described ASI output interface with multiplexed frame with the streamed output of PMS.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described CPU element comprises that Service Processing Module, net table generate module and Multiplexing module;
Described Service Processing Module, it is used for receiving business datum, and business datum is packaged into multiplexed sub frame;
Described net table generates module, and it is used for transmitting the multiplexed sub frame of described Service Processing Module transmission, also is used for generating the control information table;
Described Multiplexing module, it is used for multiplexed sub frame and control information table are multiplexed into multiplexed frame.
Further, described control information table comprises network information table, period service duplexing configuration list and encryption authorization description list.
Further, the business datum of described CPU element reception comprises television broadcasting, sound radio, data broadcast and urgent broadcast.
Further, when described business datum is the emergency broadcasting service data, after being encapsulated as the form of urgent broadcast table, it transmits again.
Further, described CPU element also is connected with GPS unit and local monitor administrative unit, and described GPS unit is used for receiving GPS information, and process to described CPU element the GPS communication, described local monitor administrative unit is used for by serial ports and Ethernet interface, described CPU element being carried out Real Time Monitoring and configuration management.
Further, described IP output module adopts 100Mbps or 1000Mbps Ethernet interface, and the physical interface of described Ethernet interface is the RJ45 interface.
Further, described FPGA unit also is connected with CPLD unit and human-machine interface unit, is used for driving described human-machine interface unit, and is used for carrying out with described CPLD unit the instruction that communication CPLD described here unit can receive described CPU element.
The invention has the beneficial effects as follows: the more traditional multiplexer of the present invention, newly-increased Ethernet service delivery outlet is exported the PMS bag that is encapsulated as the UDP form by Ethernet interface, greatly increase the transmission range of multiplexer.Therefore, the present invention makes multiplexer can be suitable for operational environment widely by abundant input/output interface.
Description of drawings
Fig. 1 is the processing block diagram of traditional multiplexer of the present invention;
Fig. 2 is the structural representation of the CMMB multiplexer with Ethernet interface of the present invention.
Fig. 3 is the structure composition diagram of CPU module of the present invention.
In accompanying drawing, the list of parts of each label representative is as follows:
1, CPU element, 2, the IP output module, 3, the FPGA unit, 4, the ASI input/output module, 5, the GPS unit, 6, the local monitor administrative unit, 7, the CPLD unit, 8, human-machine interface unit, 11 Service Processing Modules, 12, the net table generates module, 13 Multiplexing modules.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example only is used for explaining the present invention, is not be used to limiting scope of the present invention.
As shown in Figure 2, the present embodiment relates to a kind of CMMB multiplexer with the Ethernet output interface, comprises CPU element 1, IP output module 2, FPGA unit 3 and ASI input/output module 4.
Wherein, described CPU element 1 is used for receiving business datum, and business datum is encapsulated, generates the net table and makes multiplexed frame.Particularly, described CPU element comprises that Service Processing Module 11, net table generate module 12 and Multiplexing module 13; Described Service Processing Module 11, it is used for receiving business datum, and business datum is packaged into multiplexed sub frame; Described net table generates module 12, and it is used for transmitting the multiplexed sub frame of described Service Processing Module 11 transmission, also is used for generating the control information table; Described Multiplexing module 13, it is used for multiplexed sub frame and control information table are multiplexed into multiplexed frame.
Here, described control information table comprises network information table, period service duplexing configuration list and encryption authorization description list.And the business datum that described CPU element receives comprises television broadcasting, sound radio, data broadcast and urgent broadcast, when described business datum is the emergency broadcasting service data, transmits after it is encapsulated as the form of urgent broadcast table again.
In addition, described CPU element 1 also is connected with GPS unit 5 and local monitor administrative unit 6, and described GPS unit 5 is used for receiving GPS information, and process to described CPU element 1 the GPS communication, described local monitor administrative unit 6 is used for by serial ports and Ethernet interface, described CPU element 1 being carried out Real Time Monitoring and configuration management.
For described IP output module 2, it is connected with described CPU element 1, exports by Ethernet interface with the UDP form for the multiplexed frame that will be encapsulated as the PMS bag; Here, described IP output module 2 adopts 100Mbps or 1000Mbps Ethernet interface, and the physical interface of described Ethernet interface is the RJ45 interface.
Described FPGA unit 3, it all is connected with described CPU element 1 and described ASI input/output module 4, is used for driving described ASI input/output module 4, and communicates with described CPU element 1.This
In addition, described FPGA unit 3 also is connected with CPLD unit 7 and human-machine interface unit 8, is used for driving described human-machine interface unit 8, and is used for carrying out communication with described CPLD unit 7, and described CPLD unit 7 can receive the instruction of described CPU element 1.
Described ASI input/output module 4, it is connected with described FPGA unit 3, and described ASI input/output module 4 comprises ASI input interface and described ASI output interface, it is used for by described ASI input interface reception business datum, and by described ASI output interface with multiplexed frame with the streamed output of PMS.Here the ASI interface is BNC connector, cloudy type, and output impedance is 75 Ω.
In the present embodiment, described CPU element can also be connected with FLASH unit and SDRAM unit, and described FLASH unit is used for described CPU element is configured and starts, and described SDRAM unit is used for data are carried out buffer memory.FLASH unit and SDRAM unit also can be arranged in described CPU element.
Described FPGA unit also can also drive a network management interface, and it is used for the operation by the described CPU element of ethernet management.
The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. the CMMB multiplexer with the Ethernet output interface, is characterized in that, comprises CPU element, IP output module, FPGA unit and ASI input/output module;
Described CPU element, it is used for receiving business datum, and business datum is encapsulated, generates the net table and makes multiplexed frame;
Described IP output module, it is connected with described CPU element, exports by Ethernet interface with the UDP form for the multiplexed frame that will be encapsulated as the PMS bag;
Described FPGA unit, it all is connected with described CPU element and described ASI input/output module, is used for driving described ASI input/output module, and is used for communicating with described CPU element;
Described ASI input/output module, it is connected with described FPGA unit, and comprises ASI input interface and ASI output interface, be used for by described ASI input interface reception business datum, and by described ASI output interface with multiplexed frame with the streamed output of PMS.
2. CMMB multiplexer according to claim 1, is characterized in that, described CPU element comprises that Service Processing Module, net table generate module and Multiplexing module;
Described Service Processing Module, it is used for receiving business datum, and business datum is packaged into multiplexed sub frame;
Described net table generates module, and it is used for transmitting the multiplexed sub frame of described Service Processing Module transmission, also is used for generating the control information table;
Described Multiplexing module, it is used for multiplexed sub frame and control information table are multiplexed into multiplexed frame.
3. multiplexer according to claim 2, is characterized in that, described control information table comprises network information table, period service duplexing configuration list and encryption authorization description list.
4. multiplexer according to claim 1, is characterized in that, the business datum that described CPU element receives comprises television broadcasting, sound radio, data broadcast and urgent broadcast.
5. multiplexer according to claim 4, is characterized in that, when described business datum is the emergency broadcasting service data, transmits after it is encapsulated as the form of urgent broadcast table again.
6. CMMB multiplexer according to claim 1, it is characterized in that, described CPU element also is connected with GPS unit and local monitor administrative unit, and described GPS unit is used for receiving GPS information, and process to described CPU element the GPS communication, described local monitor administrative unit is used for by serial ports and Ethernet interface, described CPU element being carried out Real Time Monitoring and configuration management.
7. CMMB multiplexer according to claim 1, is characterized in that, described IP output module adopts 100Mbps or 1000Mbps Ethernet interface, and the physical interface of described Ethernet interface is the RJ45 interface.
8. CMMB multiplexer according to claim 1, is characterized in that, described FPGA unit also is connected with CPLD unit and human-machine interface unit, is used for driving described human-machine interface unit, and be used for carrying out communication with described CPLD unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100416648A CN103152610A (en) | 2013-02-04 | 2013-02-04 | China mobile multimedia broadcasting (CMMB) multiplexer (MUX) provided with Ethernet output interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100416648A CN103152610A (en) | 2013-02-04 | 2013-02-04 | China mobile multimedia broadcasting (CMMB) multiplexer (MUX) provided with Ethernet output interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103152610A true CN103152610A (en) | 2013-06-12 |
Family
ID=48550442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100416648A Pending CN103152610A (en) | 2013-02-04 | 2013-02-04 | China mobile multimedia broadcasting (CMMB) multiplexer (MUX) provided with Ethernet output interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103152610A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1753507A (en) * | 2005-08-25 | 2006-03-29 | 深圳创维－Rgb电子有限公司 | Adjusting and testing method of embedded type set top box |
| CN101267571A (en) * | 2008-04-23 | 2008-09-17 | 中兴通讯股份有限公司 | A reuse device and method |
| CN101321293A (en) * | 2007-06-06 | 2008-12-10 | 中兴通讯股份有限公司 | Apparatus and method for implementing multi-path program multiplexing |
| CN101959062A (en) * | 2010-05-13 | 2011-01-26 | 北京创毅视讯科技有限公司 | Data transmission method, system and device for China mobile multimedia broadcasting (CMMB) system |
| CN203261429U (en) * | 2013-02-04 | 2013-10-30 | 奥维通信股份有限公司 | CMMB multiplexer with Ethernet output interface |
-
2013
- 2013-02-04 CN CN2013100416648A patent/CN103152610A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1753507A (en) * | 2005-08-25 | 2006-03-29 | 深圳创维－Rgb电子有限公司 | Adjusting and testing method of embedded type set top box |
| CN101321293A (en) * | 2007-06-06 | 2008-12-10 | 中兴通讯股份有限公司 | Apparatus and method for implementing multi-path program multiplexing |
| CN101267571A (en) * | 2008-04-23 | 2008-09-17 | 中兴通讯股份有限公司 | A reuse device and method |
| CN101959062A (en) * | 2010-05-13 | 2011-01-26 | 北京创毅视讯科技有限公司 | Data transmission method, system and device for China mobile multimedia broadcasting (CMMB) system |
| CN203261429U (en) * | 2013-02-04 | 2013-10-30 | 奥维通信股份有限公司 | CMMB multiplexer with Ethernet output interface |
Non-Patent Citations (1)
| Title |
|---|
| 国家广播电影电视总局: "移动多媒体广播第8部分：复用器技术要求和测量方法", 《中华人民共和国广播电影电视行业标准GY/T220.8-2008》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108777676B (en) | Apparatus and method for receiving media data in multimedia transmission system | |
| CN101237291B (en) | Mdu broadcasting signal distribution system | |
| CN110266912A (en) | Sending device, reception device and display device | |
| KR20140125690A (en) | A method and apparatus for transmitting a media transport packet in a multimedia transport system | |
| CN105451096B (en) | Network direct broadcasting system and live broadcasting method | |
| CN103763579A (en) | Method for recognizing multichannel transmission streams based on USB interface | |
| CN106034258A (en) | Router and broadcasting method for multipath broadcast digital television signals | |
| KR20140126827A (en) | Method and apparatus for transmitting and receiving a broadcasting service by using moving picture experts group media transport in a digital video broadcasting system | |
| CN203233504U (en) | Remote wireless multi-point video monitoring system | |
| KR101724342B1 (en) | Wireless interface for all interface standards | |
| CN106034259A (en) | Router and broadcasting method for multipath broadcast digital television signals | |
| CN104601962A (en) | Audio/video transmission talkback system and method based on universal serial bus | |
| CN101754024B (en) | Multiplexing device and multiplexing method | |
| CN201967045U (en) | Video monitoring server | |
| CN101321293B (en) | Apparatus and method for implementing multi-path program multiplexing | |
| CN203261429U (en) | CMMB multiplexer with Ethernet output interface | |
| CN104244085B (en) | Multimedia data transmission method and device based on field programmable gate array | |
| CN101267571B (en) | A reuse device and method | |
| CN103152610A (en) | China mobile multimedia broadcasting (CMMB) multiplexer (MUX) provided with Ethernet output interface | |
| CN201018611Y (en) | AVS-M based video-audio signal front-end processing system | |
| CN103281586B (en) | The real-time monitoring system of DVB-C TV signal | |
| CN201352834Y (en) | High-definition conference system based on digital television HDTV platform | |
| CN206332784U (en) | A kind of network advertising machine of playable terrestrial DTV | |
| CN218243639U (en) | Two-channel high-definition video and audio network encoder | |
| CN218006426U (en) | AVS2 ultra-high-definition network video and audio professional decoder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130612 |