CN101022604A - Mobile multimedia broadcasting receiving method and device - Google Patents
Mobile multimedia broadcasting receiving method and device Download PDFInfo
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- CN101022604A CN101022604A CNA2007100882435A CN200710088243A CN101022604A CN 101022604 A CN101022604 A CN 101022604A CN A2007100882435 A CNA2007100882435 A CN A2007100882435A CN 200710088243 A CN200710088243 A CN 200710088243A CN 101022604 A CN101022604 A CN 101022604A
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Abstract
A receiving device of mobile multimedia broadcast is prepared as inputting service requirement information of said broadcast by user input unit to obtain technical parameter corresponding to broadcast service, receiving air electromagnetic signal of said broadcast by radio signal receiving unit according to obtained technical parameter, analyzing multiplex frame and multiplex sub-frame in said electromagnetic signal by de-multiplexing unit, decoding mobile multimedia broadcast data by decoding unit and playing decoded data out through playing unit.
Description
Technical field
The present invention relates to digital mobile multimedia broadcasting technical field, relate in particular to a kind of mobile multimedia broadcasting receiving method and device.
Background technology
In recent years, digital mobile multimedia broadcasting technology and standard evolution are rapid, Ou Zhou digital video broadcast-handheld formula reception technique (Digital Video Broadcast Handheld for example, DVB-H), the single forward link technology of the medium of the U.S. (Media Forward Link Only, MediaFLO) and China China mobile multi-media broadcasting technology (China Mobile Multimedia Broadcasting, CMMB) etc., for its terminal use provides many service content, if advertisement, weather forecast, news, sports cast, variety, the multimedia broadcasting play, programs such as film, the user can select the service program of Mobile Multimedia Broadcasting according to the hobby of oneself.
Mobile Multimedia Broadcasting is meant via satellite and the terrestrial wireless broadcast mode, receives professional system such as broadcast TV program and information service whenever and wherever possible for seven cun accepting devices such as following the small screen.The chief component of CMMB system architecture comprises that first is the front end of broadcasting, comprises the content of broadcast TV program and data service, pools together by the program integrated platform and broadcasts.Its transmission system main composition comprises satellite system and ground transition net so.It is to be covered as the master by one with satellite, and it is auxilliary increasing fixed network with ground, covers the whole of China, realizes the system of receiving broadcast signal whenever and wherever possible.
This system adopts the frequency of S-band.Its signal one tunnel is directly to be up to satellite, and the signal of relaying into S-band then on satellite directly sends to terminal.The place that China probably has 5% area satellite-signal to cover is augmented with ground system.That is to say that signal that receiving terminal can receive satellite also can receive the signal on ground.These two signals are while, same frequency, same signal.
Mobile Multimedia Broadcasting adopts time division way to send MBMS service, and the duration of its broadcast channel frame is 1 second, is made up of 40 25 milliseconds of time slots, and one or more time slots can carry the data of a broadcasting multiplex frame encapsulation.In the multiplexed frame structure of Mobile Multimedia Broadcasting, multiplexed frame is divided into multiplexing ` frame head, multiplexed frame payload and fills three parts, and wherein multiplex frame head has encapsulated multiplexed frame associated overhead information, and the multiplexed frame payload has encapsulated multimedia carrying data.Mobile Multimedia Broadcasting will be controlled and carry the data separating mode and be sent, and terminal then needs to receive mobile multi-media broadcasting data information according to user's request and system requirements.
Yet at present, also be fit to receive the terminal equipment of Mobile Multimedia Broadcasting, that gives China mobile multi-media broadcasting technology has universally brought very big obstacle.
Summary of the invention
The present invention proposes a kind of method of reseptance and device of Mobile Multimedia Broadcasting, solved the problem that Mobile Multimedia Broadcasting lacks receiving equipment.
For this reason, the present invention has taked following technical scheme:
A kind of mobile multimedia broadcasting receiving method may further comprise the steps:
A, input mobile multi-media broadcasting service demand information;
B, obtain the technical parameter of described mobile multi-media broadcasting service correspondence;
C, receive the aerial electromagnetic signal of described Mobile Multimedia Broadcasting according to described technical parameter;
Multiplexed frame and multiplexed sub frame in D, the described aerial electromagnetic signal of parsing;
E, the described mobile multi-media broadcasting data of described multiplexed sub frame carrying is decoded, and play.
Among the step B, the technical parameter of described mobile multi-media broadcasting service correspondence can obtain by the control information table from buffer memory.
Among the step B, the technical parameter of described mobile multi-media broadcasting service correspondence can obtain from the control information table the control logic channel multiplexing frame.
The technical parameter of described mobile multi-media broadcasting service correspondence comprises frequency, multiplexed frame, multiplexed sub frame and physical channel parameters.
Step C is further comprising the steps of:
The aerial electromagnetic signal of described Mobile Multimedia Broadcasting is carried out conversion, demodulation, the deinterleaving of analog to digital and conciliate error correction.
Step D further may further comprise the steps:
Resolve multiplex frame head and multiplexed sub frame head,, then be stored in memory cell if the multiplexed frame payload need be stored or buffer memory;
The described mobile multi-media broadcasting data of described multiplexed sub frame carrying is issued decoding unit.
A kind of mobile multimedia broadcast receiving apparatus, comprise the wireless signal receiving element, demultiplexing unit, decoding unit, control unit, user profile input unit and broadcast unit, wherein said wireless signal receiving element is used to receive the aerial electromagnetic signal of Mobile Multimedia Broadcasting, and carry out the conversion of analog to digital, demodulation, deinterleaving and release of an interleave, described demultiplexing unit is used to resolve multiplexed frame and multiplexed sub frame, described decoding unit is used for the decoding to mobile multi-media broadcasting data, described user profile input unit is used to import the mobile multi-media broadcasting service demand information, described broadcast unit is used for the mobile multi-media broadcasting data behind the broadcast decoder, and described control unit is used to control described receiving system.
Also comprise memory cell, memory cell of living in comprises internal memory and external memory, is used for buffer memory or storage multiplexed frame payload or mobile multi-media broadcasting data.
Described decoding unit comprises audio decoding unit, video decoding unit and data decode unit.
Described broadcast unit comprises audio playing unit, video playback unit and data playback unit.
Adopted technical scheme of the present invention, the method for reseptance and the device of Mobile Multimedia Broadcasting can be provided, made it reproduce mobile multi-media broadcasting data.
Description of drawings
Fig. 1 is the structural representation of mobile multimedia broadcast receiving apparatus;
Fig. 2 is the flow chart that receives Mobile Multimedia Broadcasting.
Embodiment
Receive accompanying drawing below, technical scheme of the present invention is described further by embodiment.
Fig. 1 is the structural representation of mobile multimedia broadcast receiving apparatus.As shown in Figure 1, mobile multimedia broadcast receiving apparatus comprises wireless signal receiving element 1, demultiplexing unit 2, decoding unit 3, control unit 4, user profile input unit 5, broadcast unit 6 and memory cell 7.Wherein wireless signal receiving element 1 carries out the conversion of analog to digital with the aerial electromagnetic signal of the Mobile Multimedia Broadcasting of reception, demodulation, behind deinterleaving and the release of an interleave, send to demultiplexing unit 2,2 pairs of signals of sending from wireless signal receiving element 1 of demultiplexing unit are resolved multiplexed frame and multiplexed sub frame, send to decoding unit 3 then, 3 pairs of mobile multi-media broadcasting datas of receiving of decoding unit are decoded, and send to broadcast unit 6 and play, user profile input unit 5 offers the user and imports the mobile multi-media broadcasting service demand information, memory cell 7 comprises internal memory and external memory, be used for buffer memory or storage multiplexed frame payload or mobile multi-media broadcasting data, the whole receiving system of control unit 4 control comprises mutual between inner each unit and the unit.
Fig. 2 is the flow chart that receives Mobile Multimedia Broadcasting.As shown in Figure 2, receiving Mobile Multimedia Broadcasting may further comprise the steps:
Step 101: the user is input to control unit by the user profile input unit with the mobile multi-media broadcasting service demand information;
Step 102: by the control unit control information table of whether having judged in the memory cell buffer memory, if, forward step 104 to, if not, then forward step 103 to;
Step 103: receive control logic channel multiplexing frame, and resolve, obtain the control information table, and in memory cell buffer memory;
Step 104: inquiry control information table, obtain the pairing technical parameter of mobile multi-media broadcasting service that the user imports, comprise frequency, multiplexed frame, multiplexed sub frame, time slot and physical channel parameters;
Step 105: the wireless signal receiving element receives the aerial electromagnetic signal of Mobile Multimedia Broadcasting according to the technical parameter that obtains;
Step 106: the operation of error correction is conciliate in the conversion, demodulation, deinterleaving that aerial electromagnetic signal is carried out analog to digital;
Step 107: signal resolution multiplexed frame and the multiplexed sub frame of demultiplexing unit to receiving, the multiplexed frame payload behind the demultiplexing is stored or buffer memory if desired, then stores or is cached in the internal memory or external memory of memory cell;
Step 108: decoding unit is decoded to the multiplexed sub frame data carried by data, if mobile multi-media broadcasting data need be stored or buffer memory, then is stored in the external memory or internal memory of memory cell;
Step 109: broadcast unit playing mobile multimedia broadcasting.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, a kind of mobile multimedia broadcasting receiving method is characterized in that, may further comprise the steps:
A, input mobile multi-media broadcasting service demand information;
B, obtain the technical parameter of described mobile multi-media broadcasting service correspondence;
C, receive the aerial electromagnetic signal of described Mobile Multimedia Broadcasting according to described technical parameter;
Multiplexed frame and multiplexed sub frame in D, the described aerial electromagnetic signal of parsing;
E, the described mobile multi-media broadcasting data of described multiplexed sub frame carrying is decoded, and play.
2, a kind of mobile multimedia broadcasting receiving method according to claim 1 is characterized in that, among the step B, the technical parameter of described mobile multi-media broadcasting service correspondence can obtain by the control information table from buffer memory.
3, a kind of mobile multimedia broadcasting receiving method according to claim 1 is characterized in that, among the step B, the technical parameter of described mobile multi-media broadcasting service correspondence can obtain from the control information table the control logic channel multiplexing frame.
4, according to claim 1,2 or 3 described a kind of mobile multimedia broadcasting receiving methods, it is characterized in that the technical parameter of described mobile multi-media broadcasting service correspondence comprises frequency, multiplexed frame, multiplexed sub frame, time slot and physical channel parameters.
5. a kind of mobile multimedia broadcasting receiving method according to claim 1 is characterized in that step C is further comprising the steps of:
The aerial electromagnetic signal of described Mobile Multimedia Broadcasting is carried out conversion, demodulation, the deinterleaving of analog to digital and conciliate error correction.
6, a kind of mobile multimedia broadcasting receiving method according to claim 1 is characterized in that step D further may further comprise the steps:
Resolve multiplex frame head and multiplexed sub frame head,, then be stored in memory cell if the multiplexed frame payload need be stored or buffer memory;
The described mobile multi-media broadcasting data of described multiplexed sub frame carrying is issued decoding unit.
7, a kind of mobile multimedia broadcast receiving apparatus, it is characterized in that: comprise the wireless signal receiving element, demultiplexing unit, decoding unit, control unit, user profile input unit and broadcast unit, wherein said wireless signal receiving element is used to receive the aerial electromagnetic signal of Mobile Multimedia Broadcasting, and carry out the conversion of analog to digital, demodulation, deinterleaving and release of an interleave, described demultiplexing unit is used to resolve multiplexed frame and multiplexed sub frame, described decoding unit is used for the decoding to mobile multi-media broadcasting data, described user profile input unit is used to import the mobile multi-media broadcasting service demand information, described broadcast unit is used for the mobile multi-media broadcasting data behind the broadcast decoder, and described control unit is used to control described receiving system.
8, a kind of mobile multimedia broadcast receiving apparatus according to claim 7 is characterized in that, also comprises memory cell, and memory cell of living in comprises internal memory and external memory, is used for buffer memory or storage multiplexed frame payload or mobile multi-media broadcasting data.
9, a kind of mobile multimedia broadcast receiving apparatus according to claim 7 is characterized in that, described decoding unit comprises audio decoding unit, video decoding unit and data decode unit.
10, a kind of mobile multimedia broadcast receiving apparatus according to claim 7 is characterized in that, described broadcast unit comprises audio playing unit, video playback unit and data playback unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100882435A CN100574473C (en) | 2007-03-20 | 2007-03-20 | A kind of mobile multimedia broadcasting receiving method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100882435A CN100574473C (en) | 2007-03-20 | 2007-03-20 | A kind of mobile multimedia broadcasting receiving method and device |
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| CN101022604A true CN101022604A (en) | 2007-08-22 |
| CN100574473C CN100574473C (en) | 2009-12-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567869B (en) * | 2008-04-25 | 2013-05-08 | 中兴通讯股份有限公司 | Method and device for analyzing CMMB standard mobile television |
| CN103533287A (en) * | 2013-10-15 | 2014-01-22 | 广东威创视讯科技股份有限公司 | Video processing method and device |
| CN105578307A (en) * | 2015-12-14 | 2016-05-11 | 深圳多尼卡互联技术有限公司 | Airplane television broadcast system and realization method thereof |
-
2007
- 2007-03-20 CN CNB2007100882435A patent/CN100574473C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567869B (en) * | 2008-04-25 | 2013-05-08 | 中兴通讯股份有限公司 | Method and device for analyzing CMMB standard mobile television |
| CN103533287A (en) * | 2013-10-15 | 2014-01-22 | 广东威创视讯科技股份有限公司 | Video processing method and device |
| CN103533287B (en) * | 2013-10-15 | 2016-12-07 | 广东威创视讯科技股份有限公司 | A kind of method for processing video frequency and device |
| CN105578307A (en) * | 2015-12-14 | 2016-05-11 | 深圳多尼卡互联技术有限公司 | Airplane television broadcast system and realization method thereof |
| CN105578307B (en) * | 2015-12-14 | 2019-03-22 | 深圳多尼卡互联技术有限公司 | A kind of airborne television broadcast system and its method of realization |
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| Publication number | Publication date |
|---|---|
| CN100574473C (en) | 2009-12-23 |
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