CN100377512C - Data transmission and data reproduction method for digital broadcast - Google Patents
Data transmission and data reproduction method for digital broadcast Download PDFInfo
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- CN100377512C CN100377512C CNB031192580A CN03119258A CN100377512C CN 100377512 C CN100377512 C CN 100377512C CN B031192580 A CNB031192580 A CN B031192580A CN 03119258 A CN03119258 A CN 03119258A CN 100377512 C CN100377512 C CN 100377512C
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Abstract
The present invention relates to a method of data transmission and data reproduction for digital audio broadcasting (DAB), which is a method for transmitting data from a transmitting end to a receiving end to reproduce the data at the receiving end by means of data conversion and the conversion of packaging technology through DAB packaging transmission technology.
Description
Technical field
The present invention relates to the method that a kind of data transmit, particularly a kind ofly be applied in the method that transfer of data in the digital broadcasting (DAB) and data present.
Background technology
The present broadcast system of using, it mainly is the broadcast system that adopts analog Play System, be existing frequency modulation (FM) or amplitude modulation (AM) broadcasting channel, because the channel of analog broadcast system is fixed and bandwidth is little, can only be used to transmit the information of sound, and a channel only can hold the transmission of a programme information, as plural channel near the time, produce interference between two channels toward the contact meeting; The covering scope that adds analog broadcasting is little, and when the device of receiving terminal was in the boundary position of covering scope, because the relation of signal attenuation, the signal that receiving terminal is received contained much noise often, or even desultory signal; For the modern times of communication scientific and technological progress, in order to satisfy the demand that the mankind know, new transfer system is overlapped in design one, and is gradually important.
In addition for present broadcasting ecology, majority is that the data of unidirectional character transmit, and for the modern life of high speed information transmission and exchange, unidirectional information is passed on, be difficult for to integrate the suggestion between transmission person and the recipient, thus this kind load mode gesture is little gradually; In addition, just utilize wireless transmission to transmit the pattern of multimedia messages at present,, on transmitting speed, scope and data volume, still have it to need improvements though it can transmit multimedia messages.
Summary of the invention
In view of above prior art problems, the invention provides a kind of transfer of data in the digital broadcasting (DAB) and method that presents of data of being applied in, by the conversion of data and the transformation of technology packet, with the package transmission technology of data, deliver to the method that receiving terminal presents by transmission ends through digital broadcasting (DAB).
The object of the present invention is to provide a kind of method that transfer of data in the digital broadcasting (DAB) and data present that is applied in,, reach the purpose that transfer of data to the receiving terminal with transmission ends presents by the operation of native system and method.
Therefore for reaching above-mentioned purpose, method of the present invention comprises the step of tcp data segment and the step that data present part; Comprise the following step at tcp data segment: at first data transaction is become the wireless transmission packet information; And then with wireless transmission packet information converting multimedia transfer of data (Multimedia Object Transfer; MOT) packet information; Then according to multi-medium data transmission (Multimedia Object Transfer; MOT) packet information is carried out the parameter setting of multi-medium data connection object (MOT Object); Transmit this data according to this multi-medium data connection object (MOT Object) parameter setting at last.
Present part in data and then comprise the following step: after at first receiving multi-medium data connection object (MOT Object); Then according to this multi-medium data connection object (MOT Oject) converting multimedia transfer of data (Multimedia Object Transfer; MOT) packet information; Then according to multi-medium data transmission (Multimedia Object Transfer; MOT) packet information converts the wireless transmission packet information to; From this wireless transmission packet information, capture the data that send out again; Last these data to user's the reading interface that transmits again presents.
Description of drawings
Fig. 1 is a data transmission operation flow chart of the present invention;
Fig. 2 presents operation workflow figure for data of the present invention;
Fig. 3 is that the signal of the digital system broadcast system of the embodiment of the invention produces flow chart;
Fig. 4 is the data structure diagram of the wireless transmission package of the embodiment of the invention;
Fig. 5 is the main data area first kind data structure diagram of the wireless transmission package of the embodiment of the invention;
Fig. 6 is the main data area first kind data behaviour in service structure chart of the wireless transmission package of the embodiment of the invention;
Fig. 7 is the main data area second categorical data structure chart of the wireless transmission package of the embodiment of the invention;
Fig. 8 is key data district the 3rd class first type data structure diagram of the wireless transmission package of the embodiment of the invention;
Fig. 9 is main data area the 3rd class first type data behaviour in service structure chart of the wireless transmission package of the embodiment of the invention;
Figure 10 is key data district the 3rd class second type data structure diagram of the wireless transmission package of the embodiment of the invention;
Figure 11 is key data district the 3rd class the 3rd type data structure diagram of the wireless transmission package of the embodiment of the invention;
Figure 12 is main data area the 3rd class the 3rd type data behaviour in service structure chart of the wireless transmission package of the embodiment of the invention;
Figure 13 is key data district the 3rd class the 4th type data structure diagram of the wireless transmission package of the embodiment of the invention;
Figure 14 is the integration of wireless transmission package of the embodiment of the invention and the transmission frame composition of digital broadcasting multi-medium data connection object;
Figure 15 is the processing module calcspar of the reception wireless transmission package converting multimedia transfer of data object of the embodiment of the invention;
Figure 16 is the transmission frame composition of the digital broadcasting multi-medium data connection object of the embodiment of the invention;
Figure 17 is the multi-medium data connection object structure chart of the embodiment of the invention;
Figure 18 is cut apart schematic diagram 1 for the data of the multi-medium data connection object of the embodiment of the invention;
Figure 19 is cut apart schematic diagram 2 for the data of the multi-medium data connection object of the embodiment of the invention;
Figure 20 repeats to transmit schematic diagram for the multi-medium data connection object transmission method of the embodiment of the invention;
Figure 21 is that the intersection of the multi-medium data connection object transmission method of the embodiment of the invention transmits schematic diagram; And
Figure 22 repeats to transmit schematic diagram for the fragment of the multi-medium data connection object transmission method of the embodiment of the invention.
Embodiment
Relevant characteristics and implementation of the present invention cooperate icon to be described in detail as follows with most preferred embodiment now:
A kind ofly be applied in the method that transfer of data in the digital broadcasting (DAB) and data present,,, deliver to the method that receiving terminal presents by transmission ends with the package transmission technology of data through digital broadcastings (DAB) by the conversion of data and the transformation of technology packet; By the operation of the method, the purpose that presents in the hope of transfer of data to the receiving terminal that reaches transmission ends.
Therefore for reaching above-mentioned purpose, what method of the present invention can be divided into the transmission of data and data presents two parts explanation; The hop of data is described with Fig. 1 data transmission operation flow chart of the present invention earlier now.
As shown in the figure, at first, when data are sent in the transmission system tendency to develop, must earlier data transaction be become wireless transmission packet information (step 110), and the key data form of this wireless transmission packet information is combined by main data area (On Air Specification Message), start information (Total Length) and data qualification sign indicating number (Capcode); Wherein the main data area is as the term suggests be the data that tendency to develop is sent, and this main data area is subdivided into three parts of data division, ending message (Checksum) and data group header (Data Group Header) again; This data qualification sign indicating number (Capcode) as general class, application class or the individual mankind's classification, can obviously be differentiated the classification of each data in order to indicate the kind of these data by this classification.
Data are after the making through the wireless transmission package, because the non-general wireless transmission package pattern of transmission mode of digital broadcasting (DAB) therefore must continue according to this wireless transmission packet information converting multimedia transfer of data object (MOT Object) (step 120); And (MOT Object) carries out parameter setting according to this multi-medium data connection object; Wherein carry out parameter setting multi-medium data connection object (MOT Object) afterwards, the composition of its package is mainly combined by header summary (header core) district, header extension (header extension) district and objective subject (Object body) district.
Then before the transmission data,, must cut this multi-medium data connection object (MOT Ojbect), just can transmit to obtain a plurality of connection objects (step 130) because transfer of data is big or small restricted; After cutting this multi-medium data connection object (MOT Object) and segmentation, promptly utilize these a plurality of connection objects to transmit this data (step 140) at last, finish the action of data transfer part branch.
After the flow process of having introduced Fig. 1 tcp data segment; Continue to utilize Fig. 2, data promptly of the present invention present operation workflow figure and illustrate how receiving terminal converts the packet data that receives to can read data message.
At first the device of receiving terminal is receiving a plurality of connection objects (step 210) afterwards, promptly merges these a plurality of connection objects and converting multimedia transfer of data object (MOT Object) (step 220); Because multi-medium data connection object (MOT Object) still can't carry out the acquisition homing action of former data, so must convert wireless transmission packet information (step 230) to according to this multi-medium data connection object (MOT Object) again; Then capture former data (step 240) at last according to this wireless transmission packet information; The load mode of after data operation is handled, being presented on the display screen or passing through world-wide web, LAN or wireless network again, transmit these data to arbitrary user's receiving terminal to carry out data browsing (step 250), promptly finish the flow process that data present thus.
After the transmission of having introduced the inventive method and presenting flow process, then the icon through Fig. 3 to Figure 22 illustrates the embodiment that uses this method operation.
The mode that digital broadcasting (DAB) signal produces can be by pattern shown in Figure 3, data such as acoustic information and image information are encoded by message encoder among Fig. 3 and package synthesizer respectively, and the data after will encoding are transferred to each channel editing machine of being responsible for processing, and then the conversion of the package once more by the multitask synthesis processor, hand to the adjusting that the orthogonal frequency division multi-task processor carries out frequency, by reflector transfer of data is gone out, this is the basic flow process that digital broadcasting (DAB) signal produces.
And the signal of this digital broadcasting mainly is to form through the cutting of a series of package conversion with object, and the process of this formation mainly is divided into the formation of wireless transmission package, the formation of multi-medium data connection object (MOT Object) and three parts of cutting of multi-medium data connection object (MOT Object); Formation part at the wireless transmission package, because the wireless transmission package is combined (as shown in Figure 4) by main data area (On Air Specification Message), start information (Total Length) and data qualification sign indicating number (Capcode), the defeated data of tendency to develop must just can be carried secretly through the form of this package earlier, and this data owner will become entrained in the main data area (On Air SpecificationMessage).
But because the difference of data class, the arrangement pattern of main data area is also inequality, mainly can be divided into three major types; First class such as Fig. 5 and shown in Figure 6, mainly be made of data group part (DataGroup Data), ending message (Checksum) and three sub-data fields of data group header (Data Group Header), the data of this type application belong to data types such as the code of data or title more; Second largest class mainly is made of data group header (Data Group Header), packet header (Package Header), packet data (Package Data) and four sub-data fields of ending message (Checksum) as shown in Figure 7, and the data that this type is used belong to the data of long message type more; The third-largest class such as Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12 and shown in Figure 13, mainly by data group header block (Data Group Header), time format block (Leading Data), constituted with block (Data Group Data) and four sub-block of ending message block (Checksum) of time correlation, the data that this type is used to be belonged to and the data type of time tool relevance.This shows that the main data area is in classification, can be divided into three major types, even the third-largest class more is divided into four kinds of distortion, but after the analysis and summary, can know that this main data area is made of three sub-data fields of data division (Data GroupData), ending message (Checksum) and data group header (Data Group Header).
Formation part at multi-medium data connection object (MOT Object): as Figure 14, Figure 15 and shown in Figure 16, data are after the formation through the wireless transmission package, still can't transmit with the transmission mode of digital broadcasting (DAB), still must be through the process of once changing, could transmit with the transmission mode of digital broadcasting (DAB), and Figure 14 and Figure 16 form multi-medium data connection object (MOT Object) promptly in order to the processing of display radio transmission package through each module in the icon; More clearly represented then that as for Figure 15 the running of which module of wireless transmission package process is to form this multi-medium data connection object (MOT Object).
Cutting part at multi-medium data connection object (MOT Object): after conversion through the front, multi-medium data connection object (MOT Object) is though met the transmission mode of digital broadcasting (DAB), but if will directly transmit this multi-medium data connection object (MOT Object), certainly will will cause the slack-off problem of signal transmission, therefore must become after several connection objects through cutting section again, transmit several connection objects simultaneously and could accelerate transmitting speed, but before the cutting of explanation multi-medium data connection object (MOT Object), utilize Figure 17 to introduce the structure of multi-medium data connection object (MOT Object) earlier; The structure of multi-medium data connection object (MOT Object) is formed mainly and is combined by header summary (header core) district, header extension (header extension) district and objective subject (Object body) district institute.
Above-mentioned header summary (header core) district, its information content has comprised object size and object kinds of information, and whether the receiving system decision will or be displayed its decoding; Header extension (header extension) district, its information content has comprised the information of controlling object, as internal memory control and some extra information, in order to the use of various applicable cases to be provided; Objective subject (Object body) district, its information content is the data self-information, in order to this data to be provided.
Then speak of the theme of multi-medium data connection object (MOT Object) cutting part, as shown in figure 18, (MOT Object) cut apart according to header and objective subject with the multi-medium data connection object, be divided into a plurality of multimedia objects, Figure 19 continues to cut into the pattern of digital broadcasting (DAB) package with this multimedia object for another example afterwards, uses the transmission ends of digital broadcast transmission mode that this digital broadcasting (DAB) package transmission is gone out afterwards.
After the object and packet structure of having studied multi-medium data connection object (MOT Object) and wireless transmission package, go on to say and how these objects are transferred out, the multimedia object transmission means that is applied in digital broadcasting (DAB) at present mainly is divided into three kinds of forms; One for object repeats transfer mode, as shown in figure 20, earlier multimedia object is cut into four digital broadcastings (DAB) package, repeatedly transmits this multimedia object according to number order then; One is object intersection transfer mode, as shown in figure 21, intersects simultaneously in same data channel (single data channel) and transmits a plurality of digital broadcastings (DAB) package; One for fragment repeats transfer mode, as shown in figure 22, earlier multimedia object is cut into four digital broadcastings (DAB) package, then a certain fragment digital broadcasting of transmission (DAB) the package several that repeats according to number order; The also therefore operation of three kinds of transmission meanss could increase the correctness and the stability of transmitting multimedia object.
Though the present invention discloses as above with aforesaid preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of similar skill person; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, therefore scope of patent protection of the present invention must be looked this specification appending claims person of defining and is as the criterion.
Claims (10)
1. data transmission method that is applied in the digital broadcasting, this method comprises the following step:
One data transaction is become a wireless transmission packet information;
Convert a multi-medium data connection object to according to this wireless transmission packet information;
Cut this multi-medium data connection object to obtain a plurality of connection objects; And
Utilize these a plurality of connection objects to transmit this data.
2. as 1 described data transmission method that is applied in the digital broadcasting of claim the, this wireless transmission packet information comprises a main data area, an initial information and a data qualification sign indicating number.
3. as 2 described data transmission methods that are applied in the digital broadcasting of claim the, this data qualification sign indicating number can be selected from group's combination of a general code, an application code and people's sign indicating number any.
4. as 1 described data transmission method that is applied in the digital broadcasting of claim the, this multi-medium data connection object comprises header summary district, a header extension district and an object body region.
5. as 1 described data transmission method that is applied in the digital broadcasting of claim the, the transmission means of this multi-medium data connection object can be selected from an object and repeat transfer mode, an object and intersect transfer mode and a fragment and repeat in group's combination of transfer mode any.
6. method that the data that are applied in the digital broadcasting present, this method comprises the following step:
Receive a plurality of connection objects;
Merge these a plurality of connection objects and convert a multi-medium data connection object to;
Convert a wireless transmission packet information to according to this multi-medium data connection object;
Capture data according to this wireless transmission packet information; And
Transmit this data to one receiving terminal again.
7. the method that presents as 6 described data that are applied in the digital broadcasting of claim the, this wireless transmission packet information comprises a main data area, an initial information and a data qualification sign indicating number.
8. the method that presents as 7 described data that are applied in the digital broadcasting of claim the, this data qualification sign indicating number can be selected from group's combination of a general code, an application code and people's sign indicating number any.
9. the method that presents as 6 described data that are applied in the digital broadcasting of claim the, this multi-medium data connection object comprise header summary district, a header extension district and an object body region.
10. the method that presents as 6 described data that are applied in the digital broadcasting of claim the, this receiving terminal can be selected from group's combination of a computer, a mobile phone and a personal digital assistant any.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB031192580A CN100377512C (en) | 2003-03-06 | 2003-03-06 | Data transmission and data reproduction method for digital broadcast |
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| CNB031192580A CN100377512C (en) | 2003-03-06 | 2003-03-06 | Data transmission and data reproduction method for digital broadcast |
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| CN100377512C true CN100377512C (en) | 2008-03-26 |
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| CN101459483B (en) * | 2007-12-10 | 2012-06-06 | 联想(北京)有限公司 | Method, transmission point and system for implementing urban digital broadcast |
| CN102752400B (en) * | 2012-07-18 | 2016-08-24 | 中央人民广播电台 | Audio file multiple velocity safe transmission method and system between net |
| CN103873173B (en) * | 2014-03-27 | 2016-09-28 | 北京悦龙数字广播传媒科技有限责任公司 | Digital propelling movement type broadcasting method based on wireless digital broadcasting technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0967747A2 (en) * | 1998-06-26 | 1999-12-29 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for receiving a digital transmission, comprising a computer-readable recording medium |
| EP0996245A2 (en) * | 1998-10-21 | 2000-04-26 | Robert Bosch Gmbh | Means for the encrypted transmission and reception of multimedia-objects using the Digital Audio Broadcast (DAB) transmission system |
| JP2001197104A (en) * | 2000-01-07 | 2001-07-19 | Matsushita Electric Ind Co Ltd | Device and method for streaming multimedia object on time base |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0967747A2 (en) * | 1998-06-26 | 1999-12-29 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for receiving a digital transmission, comprising a computer-readable recording medium |
| EP0996245A2 (en) * | 1998-10-21 | 2000-04-26 | Robert Bosch Gmbh | Means for the encrypted transmission and reception of multimedia-objects using the Digital Audio Broadcast (DAB) transmission system |
| JP2001197104A (en) * | 2000-01-07 | 2001-07-19 | Matsushita Electric Ind Co Ltd | Device and method for streaming multimedia object on time base |
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