CN1879331A - Apparatus and method for inserting multimedia stream for multimedia service in dab system - Google Patents
Apparatus and method for inserting multimedia stream for multimedia service in dab system Download PDFInfo
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- CN1879331A CN1879331A CNA2003801107326A CN200380110732A CN1879331A CN 1879331 A CN1879331 A CN 1879331A CN A2003801107326 A CNA2003801107326 A CN A2003801107326A CN 200380110732 A CN200380110732 A CN 200380110732A CN 1879331 A CN1879331 A CN 1879331A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 145
- 238000012546 transfer Methods 0.000 claims description 22
- 238000012986 modification Methods 0.000 claims description 18
- 230000004048 modification Effects 0.000 claims description 18
- 238000004458 analytical method Methods 0.000 claims description 15
- 238000003780 insertion Methods 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims description 15
- 230000001052 transient effect Effects 0.000 claims description 8
- 230000008520 organization Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 238000005206 flow analysis Methods 0.000 description 5
- 230000011664 signaling Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012966 insertion method Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/02—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information
- H04H60/07—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information characterised by processes or methods for the generation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/86—Arrangements characterised by the broadcast information itself
- H04H20/95—Arrangements characterised by the broadcast information itself characterised by a specific format, e.g. an encoded audio stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
- H04H20/30—Arrangements for simultaneous broadcast of plural pieces of information by a single channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/57—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for mobile receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H2201/00—Aspects of broadcast communication
- H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
- H04H2201/20—Aspects of broadcast communication characterised by the type of broadcast system digital audio broadcasting [DAB]
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
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Abstract
An apparatus and a method for inserting a multimedia stream into the DAB transport stream in order to provide a multimedia broadcasting service in the DAB transmission system is provided. The apparatus and method for inserting the multimedia stream inserts and transmits the multimedia stream, e.g., MPEG-2 stream into DAB transport stream, to thereby provide a multimedia broadcasting service without changing an organization of the conventional DAB transmission system.
Description
Technical field
The media stream that the present invention relates in a kind of digital audio broadcasting (DAB) transmission system inserts equipment and method; Relate in particular to a kind of by in the DAB transport stream, sending media stream, for example motion image expert group 2 (MPEG-2) flows, the media stream that can stably provide MBMS service in traditional DAB transmission system and need not to change the structure of this system inserts equipment and method and a kind of computer readable recording medium storing program for performing that is used for the program of the described method of storage implementation.
Background technology
Fig. 1 is the block diagram that conventional digital audio broadcasting (DAB) transmission system is shown.As shown in the figure, traditional DAB transmission system comprises audio coder 101, total multiplexer (ensemble multiplexer) 102 and OFDM (OFDM) encoder 103.
Recently, the user wishes to receive the MBMS service that comprises the moving image service when mobile very much, and has attempted the whole bag of tricks to satisfy this demand.In these methods, a kind ofly be used to use the method for DAB system to be considered to MBMS service with powerful mobile receiving ability.
Because based on the digitlization of the DAB system of traditional E ureka 147, so it develops into only processing audio data or a spot of data at analogue audio frequency broadcasting.Therefore, the DAB system has the advantage that is used for moving reception, but also has the shortcoming that various MBMS service can not be provided.
Simultaneously, present Digital Television (TV) is provided by the service that provides based on MPEG-2.As mentioned above, system standard sends because multi-medium data is based on MPEG-2, so it has the advantage on multiplexed and synchronous, can not be used for moving the defective that receives but also exist.
Therefore,, and send the multi-medium data of handling based on MPEG-2 system standard, then can stably provide MBMS service by the DAB transmission system if handle the multi-medium data that comprises moving image based on MPEG-2 system standard.As mentioned above, when the multimedia data stream of handling based on MPEG-2 system standard is provided by the DAB transmission system based on Eureka17, just need be used for MPEG-2 stream is inserted the equipment of traditional DAB transport stream.
Summary of the invention
Therefore, one object of the present invention just provides a kind of by media stream in the DAB transport stream, for example MPEG-2 flows, the media stream that can stably provide MBMS service in traditional DAB transmission system and need not to change the structure of system inserts equipment and method and a kind of computer readable recording medium storing program for performing that is used for the program of the described method of storage implementation.
According to an aspect of the present invention, provide a kind of and be used for inserting media stream so that provide the equipment of MBMS service in the DAB transmission system, described equipment comprises: DAB frame receiving element is used to receive the DAB transmission frame; DAB frame analytic unit is used for by analyzing the structural information that the DAB transmission frame obtains the DAB transmission frame; DAB frame memory cell is used for temporarily storing the DAB transmission frame; The media stream receiving element is used to receive the media stream with being inserted into; The media stream analytic unit is used for by analyzing transfer rate and the structural information that media stream obtains media stream; The media stream memory cell is used for temporarily storing media stream; DAB frame reconfiguration unit is used for the structural information according to the DAB transmission frame, the structural information of media stream and the transfer rate of media stream, by media stream being inserted DAB transmission frame reconstruct DAB transmission frame, so that generate reconstruct DAB transport stream; Control unit is used to control DAB frame reconfiguration unit reconstruct DAB transmission frame; DAB flows memory cell, is used for the reconstruct DAB transport stream that temporary transient storage will periodically be sent by DAB frame reconfiguration unit; And transmitting element, be used to send reconstruct DAB transport stream.
According to a further aspect in the invention, described equipment further comprises: the external encode unit, be used for the media stream from the output of media stream analytic unit is carried out external encode with generation external encode media stream, and be used for the external encode media stream is outputed to the media stream memory cell.
According to a further aspect in the invention, providing a kind of is used for inserting media stream so that the method for MBMS service is provided in the DAB transmission system, said method comprising the steps of: receive the DAB transmission frame, obtain the structural information of DAB transmission frame by analysis DAB transmission frame, and temporarily store the DAB transmission frame; Reception obtains the transfer rate and the structural information of media stream with the media stream that is inserted into by the analysis media stream, and stores media stream; According to the structural information of DAB transmission frame, the transfer rate of media stream and the structural information of media stream, by media stream being inserted DAB transmission frame reconstruct DAB transmission frame, thereby generate reconstruct DAB transmission frame; The reconstruct DAB transmission frame that temporary transient storage will periodically be sent; With transmission reconstruct DAB transmission frame.
According to a further aspect in the invention, described method further may further comprise the steps: before the storage media stream media stream is carried out external encode.
According to a further aspect in the invention, a kind of computer readable recording medium storing program for performing is provided, it stores to be used for carrying out and a kind ofly inserts media stream so that be equipped with the digital audio broadcasting of processor (DAB) transmission system that the instruction of the method for MBMS service is provided, said method comprising the steps of: receive the DAB transmission frame, obtain the structural information of DAB transmission frame by analysis DAB transmission frame, and temporarily store the DAB transmission frame; Reception obtains the transfer rate and the structural information of media stream with the media stream that is inserted into by the analysis media stream, and stores media stream; According to the structural information of DAB transmission frame, the transfer rate of media stream and the structural information of media stream, by media stream being inserted DAB transmission frame reconstruct DAB transmission frame, thereby generate reconstruct DAB transmission frame; The reconstruct DAB transmission frame that temporary transient storage will periodically be sent; With transmission reconstruct DAB transmission frame.
According to a further aspect in the invention, described computer readable recording medium storing program for performing may further comprise the steps: before the storage media stream media stream is carried out external encode.
The present invention relates to a kind of equipment and method of in traditional DAB transmission system, inserting the data of handling based on MPEG-2 system standard, and be summarized as follows.
If will send the media stream of handling based on MPEG-2 system standard (hereinafter being called MPEG-2 stream) by the DAB transmission system, at first must pass through to analyze DAB transmission frame, insert the structural information of the DAB transmission frame of mpeg stream with acquisition by such as the interface transmission standard input of serving coffret (STI) and total coffret (ETI) etc.Therefore, must have the space of inserting MPEG-2 stream.In addition, by analyzing structural information and the transfer rate information that the MPEG-2 that will be inserted into obtains MPEG-2 stream.
According to above information, when satisfying the DAB transmission standard, stably insert and send MPEG-2 stream.Wherein, the MPEG-2 stream that will be inserted into is carried out external encode according to grouped element, thus the opposing transmission error.
Description of drawings
According to the description below in conjunction with the given preferred embodiment of accompanying drawing, above and other purpose of the present invention and feature will become more obvious, wherein
Fig. 1 is the block diagram that traditional DAB transmission system is shown;
Fig. 2 illustrates the block diagram of using DAB transmission system of the present invention;
Fig. 3 illustrates according to a preferred embodiment of the invention, can provide the media stream insertion equipment of MBMS service and the block diagram of method in the DAB transmission system;
Fig. 4 is the block diagram that a kind of total coffret according to a preferred embodiment of the invention, Fig. 3 (ETI) frame reconstructed blocks is shown; And
Fig. 5 is a block diagram of describing according to a preferred embodiment of the invention, be used for motion image expert group 2 (MPEG-2) stream is inserted the method for ETI frame.
Embodiment
According to the description below in conjunction with accompanying drawing, above and other purpose of the present invention and feature will become more obvious.Hereinafter with preferred embodiments of the present invention will be described in detail with reference to the annexed drawings.
In digital audio broadcasting (DAB) transmission system, adopt interface transmission standard, so that multiplexed and transmission digital audio broadcasting such as service coffret (STI) and total coffret (ETI) etc.The present invention can be applicable to the DAB transmission standard such as STI etc.But, will the present invention be described according to the ETI transmission standard hereinafter.
Fig. 2 illustrates the block diagram of using DAB transmission system of the present invention.
The DAB transmission system comprises audio coder 201, total multiplexer 202 and OFDM (OFDM) modulator 204.As shown in the figure, the present invention, promptly MPEG-2 stream insertion equipment 203, between total multiplexer 202 and OFDM modulator 204.
The present invention relates to a kind of MPEG-2 is flowed and insert the DAB transport stream in the DAB transmission system so that the equipment and the method for MBMS service are provided, and as shown in the figure, the present invention relates to a kind of equipment and method that is used to insert MPEG-2 stream and need not to change the structure of traditional DAB transmission system.
In other words, the present invention provides the MBMS service that comprises the moving image service by the DAB transmission system, and inserts MPEG-2 stream so that utilize the multiplexed and synchronizing function of MPEG-2 system.
Fig. 3 is the block diagram that illustrates according to a preferred embodiment of the invention, can provide the media stream insertion method and apparatus of MBMS service in the DAB transmission system.Specifically, it shows a kind of equipment and method that is used to insert MPEG-2 stream.
As shown in the figure, insert equipment according to media stream of the present invention, promptly MPEG-2 stream insertion equipment 203 comprises: the ETI frame receives piece 300, is used to receive the ETI frame, and this ETI frame is the DAB transmission frame; ETI frame analysis block 301 is used to analyze the structural information of ETI frame; ETI frame buffer stopper 302 is used for temporarily storing the ETI frame so that reconstruct ETI frame; MPEG-2 receives piece 303, is used to receive the MPEG-2 stream that comprises multi-medium data; MPEG-2 flow analysis piece 304 is used to estimate the transfer rate of the MPEG-2 stream that is received, and is used to analyze the stream mode that is received; External encode piece 305 is used to carry out external encode so that make MPEG-2 stream opposing transmission error; MPEG-2 flows buffer stopper 306, is used for temporary transient store M PEG-2 stream so that reconstruct ETI frame; ETI frame reconstructed blocks 307 is used for by reading the data reconstruction ETI frame from ETI frame buffer stopper 302 and MPEG-2 stream buffer stopper 306; Controll block 308 is used to control ETI frame reconstructed blocks 307 so that reconstruct ETI frame; ETI flows buffer stopper 309, is used to send reconstruct DAB transmission frame; Send piece 310 with the ETI frame, be used for sending the ETI frame by physical layer.At this, the ETI transmission frame is represented the DAB transmission frame that the interface transmission standard by ETI receives.
The MPEG-2 stream insertion equipment and the method that propose among the present invention will be described hereinafter.
DAB transmission system based on Eureka 147 standards is constructed the frame with coded digital audio frequency, and this frame is sent to OFDM modulator 204, and wherein coffret is based on the ETI transmission standard.
The ETI frame receives piece 300 and receives conventional audio broadcasting, then the physical signalling of audio broadcasting is transformed into the logical signal of conventional audio broadcasting, and according to ETI frame unit grouping logical signal.
ETI frame analysis block 301 is analyzed the ETI frame that receives, thereby obtains the structural information of ETI frame.The ETI frame comprises ETI frame field, fast information channel in dab receiver (FIC), main service channel (MSC).ETI frame analysis block 301 obtains structural information by analyzing ETI field and FIC.
The structural information of the ETI frame that obtains is as mentioned above sent to the ETI frame, and temporarily be stored in the ETI frame buffer stopper 302, send to ETI frame reconstructed blocks 307 then with reconstruct ETI frame.
Simultaneously, the stream that is used for MBMS service comprises video flowing, audio stream and based on the system information flows of MPEG-2 system standard.
By flowing such as the physical interface input MPEG-2 that uses in film and the 310M of Television Engineer association (SMPTE 310M) and the digital video broadcasting-Asynchronous Serial Interface digital broadcast transmission such as (DVB-ASI).Therefore, MPEG-2 stream receives piece 303 will be as becoming logical signal by the MPEG-2 circulation such as the physical signalling of the physical interface input of SMPTE 310M and DVB-ASI etc., and by packet-based classification logical signal is sent to MPEG-2 flow analysis piece 304.In addition, when MPEG-2 stream received piece 303 received codes and flows (elementary stream) substantially, MPEG-2 stream received the piece 303 basic circulation of will encode again and becomes MPEG-2 and flow.
The effective transmission rate of the MPEG-2 stream of MPEG-2 flow analysis piece 304 estimation inputs, and the structural information of analysis of MPEG-2 stream, thus the information that obtains is sent to ETI reconstructed blocks 307.
Simultaneously, ETI frame reconstructed blocks 307 obtains the information about the space of inserting MPEG-2 stream, and owing to insert by using the frame that receives from ETI frame analysis block 301 and MPEG-2 flow analysis piece 304 and the structural information of stream to revise ETI frame field.ETI frame reconstructed blocks 307 is by using ETI frame that receives from ETI frame buffer stopper 309 and the MPEG-2 stream reconstruct ETI frame that receives from MPEG-2 stream buffer stopper 306.
Because the ETI frame has fixing transmission frame period, thus reconstruct ETI frame temporarily is stored in ETI stream buffer stopper 309, so that guarantee fixing cycle stream transmission (streaming).
The ETI frame sends piece 310 will be transformed into physics ETI frame from the logic ETI frame that ETI buffer stopper 309 receives, and send physics ETI frame.
When reconstruct ETI frame, controll block 308 is controlled flowing of all control signals, and monitors all parts 300-310.In addition, controll block 308 receives the structural information of ETI frame and transfer rate and the structural information of MPEG-2, and the information that receives is sent to ETI frame reconstructed blocks 307 and message handler 400.The information that receives is used at ETI frame reconstructed blocks 307 reconstruct ETI frames.
Fig. 4 be illustrate according to a preferred embodiment of the invention, the concrete block diagram of the ETI frame reconstructed blocks of Fig. 3.
ETI frame reconstructed blocks 307 comprises message handler 400, MSC structural unit 401, FIC structural unit 402, ETI frame field structural unit 403 and multiplexer 404.
The method that is used for reconstruct ETI frame that to describe ETI frame reconstructed blocks 307 hereinafter and in ETI frame reconstructed blocks 307, realize.
MSC structural unit 401 flows the new MSC of MPEG-2 stream structure that buffer stopper 306 receives according to inserting MPEG-2 stream and inserting the information in the space of MPEG-2 flow by the MSC the ETI frame that receives from ETI frame buffer stopper 302 with from MPEG-2.
FIC structural unit 402 is revised information and the new FIC of the structure of the FIC from the ETI frame that ETI frame buffer stopper 302 receives according to the IFC that receives from message handler 400.
ETI frame field structural unit 403 is revised information and the new ETI frame field of the structure of the ETI frame field value from the ETI frame that ETI frame buffer stopper 302 receives according to the ETI frame that receives from message handler 400.
Fig. 5 is a block diagram of describing according to a preferred embodiment of the invention, be used for MPEG-2 stream is inserted the method for ETI frame.
Because the purpose of traditional DAB transmission system just provides digital audio broadcasting, so input ETI frame only comprises audio-frequency information and audio stream.As shown in the figure, the ETI frame is the DAB transmission frame, and it comprises ETI frame field, FIC, MSC and relevant for the filling field of audio frequency.
Information and stream that the present invention will be referred to media stream (that is MPEG-2 stream) exactly insert the ETI frame.
Analysis is inserted analytical information according to analytical information with media stream then with the MPEG-2 stream and the ETI frame that are inserted into.
For reconstruct audio frequency ETI frame field, insert multimedia ETI frame field in the back by using the ETI frame field that in message handler 400, obtains, keep audio frequency ETI frame field simultaneously and do not carry out any change.Therefore, by using insertion position information, will insert after the audio frequency ETI frame field about the multimedia ETI frame field of MPEG-2 stream.
Simultaneously, FIC comprises the integrally-built information and the information that relates to existing stream about existing stream in MSC.Therefore,, multimedia FIC is inserted into after the audio frequency FIC, and revises relevant integrally-built FIC for reconstruct FIC.Therefore, will insert traditional audio frequency FIC about the multimedia FIC frame field with being inserted into of MPEG-2 stream, and by using insertion position information, revising about integrally-built FIC according to the IFC modification information in the ETI frame.
Simultaneously, for reconstruct MSC, the space of the MSC of the ETI frame by use inserting MPEG-2 stream, and use the MPEG-2 flow that will be inserted into an ETI frame, multimedia MSC (that is MPEG-2 stream) is inserted audio frequency MSC.
So far, the ETI transmission standard of situation follow to(for) DAB transmission system of the present invention is described.When the DAB transmission system is based on the STI transmission standard, can use the present invention.Essential structure is identical with the ETI transmission standard with operation.But because do not have FIC based on the transmission frame of STI, it does not need FIC structural unit 402.
STI frame reconstructed blocks corresponding to ETI frame reconstructed blocks 307 comprises message handler, MSC structural unit, STI frame field structural unit and multiplexer.
Message handler corresponding to Reference numeral " 400 " passes through to use the structural information of STI transmission frame and the transfer rate and the structural information of MPEG-2 stream, obtains MPEG-2 stream insertion spatial information, will be inserted into the MPEG-2 flow of STI transmission frame and the STI frame field modification information in the STI transmission frame.Here, STI frame field modification information comprises STI frame field that will be inserted into and the insertion position information that flows about MPEG-2.
Insert spatial information according to stream and will be inserted into the MPEG-2 flow of a STI transmission frame that receives from message handler corresponding to the MSC structural unit of Reference numeral " 401 ", by MPEG-2 stream and the new MSC of the structure of the MSC from the STI frame that the STI frame buffer stopper corresponding to ETI frame buffer stopper 302 receives that receives from MPEG-2 stream buffer stopper corresponding to Reference numeral " 306 ".
STI frame field structural unit corresponding to ETI frame field structural unit 403 is revised information and the new STI frame field of the structure of the STI frame field value from the STI frame that STI frame buffer stopper receives according to the STI frame that receives from message handler.
Corresponding to the multiplexer of Reference numeral " 404 " according to multiplexing new MSC of STI frame structure standard multi and new STI frame field.
As mentioned above, method of the present invention can be embodied as program, and it is stored in the computer readable recording medium storing program for performing such as CD-ROM, RAM, floppy disk, hard disk, magneto optical disk etc.
Because the present invention can handle multi-medium data according to MPEG-2 system standard, and by using traditional DAB transmission system that it is sent, so the present invention can provide MBMS service by traditional DAB transmission system.Therefore, can provide MBMS service by the DMB transmission system.
In addition, for transmission system, it is more suitable than transmitting by the DTV broadcast system to transmit multi-medium data by the DAB transmission system based on Eureka 147.Therefore, the present invention even when Miniature Terminal is mobile, also can stably provide multimedia service by this terminal.
Although described the present invention with regard to some preferred embodiment, those skilled in the art need should be appreciated that: under the situation of defined scope of the present invention, can carry out various changes and modification in not deviating from as following claims.
Claims (17)
1. one kind is used for inserting media stream so that provide the equipment of MBMS service in digital audio broadcasting (DAB) transmission system, and described equipment comprises:
DAB frame receiving system is used to receive the DAB transmission frame;
DAB frame analytical equipment is used for by analyzing the structural information that the DAB transmission frame obtains the DAB transmission frame;
DAB frame storage device is used for temporarily storing the DAB transmission frame;
The media stream receiving system is used to receive the media stream with being inserted into;
The media stream analytical equipment is used for by analyzing transfer rate and the structural information that media stream obtains media stream;
The media stream storage device is used for temporarily storing media stream;
DAB frame reconfiguration device is used for the structural information according to the DAB transmission frame, the structural information of media stream and the transfer rate of media stream, comes reconstruct DAB transmission frame by media stream being inserted the DAB transmission frame, so that generate reconstruct DAB transport stream;
Control device is used to control DAB frame reconfiguration device reconstruct DAB transmission frame;
The DAB streaming storage device is used for the reconstruct DAB transport stream that temporary transient storage will periodically be sent; With
Dispensing device is used to send reconstruct DAB transport stream.
2. equipment as claimed in claim 1 further comprises:
The external encode device is used for the media stream from the output of media stream analytical equipment is carried out external encode with generation external encode media stream, and is used for the external encode media stream is outputed to the media stream storage device.
3. equipment as claimed in claim 1, wherein DAB frame analytical equipment is analyzed the field of DAB transmission frame, thereby obtains the structural information of DAB transmission frame.
4. equipment as claimed in claim 1, wherein the transfer rate of the control device media stream that will receive from the outside and the structural information of structural information and DAB transmission frame send to DAB frame reconfiguration device.
5. equipment as claimed in claim 1, wherein handle media stream, wherein by importing described media stream such as film and Television Engineer association (SMPTE) and digital video broadcasting-Asynchronous Serial Interface interface standards such as (DVB-ASI) according to motion image expert group 2 (MPEG-2) system standard.
6. equipment as claimed in claim 1, wherein when the media stream receiving system receives the media stream of basic manifold formula, the media stream receiving system will circulate substantially according to MPEG-2 system standard and become media stream.
7. equipment as claimed in claim 1, wherein DAB frame reconfiguration device comprises:
Information processor is used for the structural information according to the DAB transmission frame, the transfer rate of media stream and the structural information of media stream and obtains media stream insertion spatial information, will be inserted into the amount of the media stream of each DAB transmission frame, total coffret (ETI) frame field modification information and fast information channel in dab receiver (FIC) modification information;
Main service channel (MSC) constructing apparatus is used to use media stream to insert spatial information and with the amount of the media stream that is inserted into, constructs new MSC by the MSC in media stream and the DAB transmission frame;
The FIC constructing apparatus is used for the new FIC of FIC structure according to FIC modification information and DAB transmission frame;
ETI frame field constructing apparatus is used for the new ETI frame field of ETI frame field value structure according to ETI frame modification information and DAB transmission frame; With
Multiplex machine is used for according to the multiplexing new ETI frame field of ETI frame structure standard multi, new FIC and new MSC.
8. equipment as claimed in claim 7, wherein ETI frame field modification information comprises the ETI frame field that will be inserted into and about the information of the insertion position of the media stream that will be inserted into.
9. equipment as claimed in claim 7, wherein FIC modification information comprises FIC frame field, insertion position and the information of revising about the FIC in the ETI frame of the media stream that will be inserted into.
10. equipment as claimed in claim 1, wherein DAB frame reconfiguration device comprises:
Information processor is used for the structural information according to the DAB transmission frame, the transfer rate of media stream and the structural information of media stream and obtains amount and service coffret (STI) the frame field modification information that media stream inserts spatial information, will be inserted into the media stream of each DAB transmission frame;
The MSC constructing apparatus is used to use media stream to insert spatial information and with the multimedia flow that is inserted into, by the new MSC of MSC reconstruct in media stream and the DAB transmission frame;
STI frame field constructing apparatus, the STI frame field value that is used for using the STI frame to revise information and DAB transmission frame is constructed new STI frame field; With
Multiplex machine is used for according to multiplexing new STI frame field of STI frame structure standard multi and new MSC.
11. equipment as claimed in claim 10, wherein STI frame field modification information comprises the STI frame field that will be inserted into and about the information of the insertion position of the media stream that will be inserted into.
12. one kind is used for inserting media stream so that provide the method for MBMS service in digital audio broadcasting (DAB) transmission system, said method comprising the steps of:
A) receive the DAB transmission frame, obtain the structural information of DAB transmission frame by analysis DAB transmission frame, and temporarily store the DAB transmission frame;
B) receive the media stream that is inserted into, obtain the transfer rate and the structural information of media stream, and store media stream by the analysis media stream;
C), by media stream being inserted DAB transmission frame reconstruct DAB transmission frame, thereby generate reconstruct DAB transmission frame according to the structural information of DAB transmission frame, the transfer rate of media stream and the structural information of media stream;
D) the temporary transient storage reconstruct DAB transmission frame that will periodically be sent; With
E) send reconstruct DAB transmission frame.
13. method as claimed in claim 12 further may further comprise the steps:
F) before step b) storage media stream, media stream is carried out external encode.
14. method as claimed in claim 12, wherein step c) may further comprise the steps:
C1) obtain media stream insertion spatial information, will be inserted into the amount of the media stream of each DAB transmission frame, total coffret (ETI) frame field modification information and fast information channel in dab receiver (FIC) modification information according to the structural information of DAB transmission frame, the transfer rate of media stream and the structural information of media stream;
C2) constructing apparatus is used for inserting spatial information and with the amount of the media stream that is inserted into, by the new MSC of the structure of the MSC in media stream and the DAB transmission frame according to media stream;
C3) FIC that revises in information and the DAB transmission frame according to FIC constructs new FIC;
C4) the ETI frame field value of revising in information and the DAB transmission frame according to the ETI frame is constructed new ETI frame field; With
C5) according to the multiplexing new ETI frame field of ETI frame structure standard multi, new FIC and new MSC.
15. method as claimed in claim 12, wherein step c) may further comprise the steps:
C1), obtain amount and service coffret (STI) frame field modification information that media stream inserts spatial information, will be inserted into the media stream of each DAB transmission frame according to the structural information of DAB transmission frame, the transfer rate of media stream and the structural information of media stream;
C2) insert spatial information according to media stream and with the amount of the media stream that is inserted into, by the new MSC of the structure of the MSC in media stream and the DAB transmission frame;
C3) the STI frame field value of revising in information and the DAB transmission frame according to the STI frame is constructed new STI frame field; With
C4) according to multiplexing new STI frame field of STI frame structure standard multi and new MSC.
16. a computer readable recording medium storing program for performing, it stores to be used for carrying out and a kind ofly inserts media stream so that be equipped with the digital audio broadcasting of processor (DAB) transmission system that the instruction of the method for MBMS service is provided, and said method comprising the steps of:
A) receive the DAB transmission frame, obtain the structural information of DAB transmission frame by analysis DAB transmission frame, and temporarily store the DAB transmission frame;
B) receive the media stream that is inserted into, obtain the transfer rate and the structural information of media stream, and store media stream by the analysis media stream;
C), come reconstruct DAB transmission frame by media stream being inserted the DAB transmission frame, thereby generate reconstruct DAB transmission frame according to the structural information of DAB transmission frame, the transfer rate of media stream and the structural information of media stream;
D) the temporary transient storage reconstruct DAB transmission frame that will periodically be sent; With
E) send reconstruct DAB transmission frame.
17. computer readable recording medium storing program for performing as claimed in claim 16 further may further comprise the steps:
F) before step b) storage media stream, media stream is carried out external encode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030067886 | 2003-09-30 | ||
| KR20030067886A KR100540174B1 (en) | 2003-09-30 | 2003-09-30 | The apparatus and its method for inserting multimedia stream for multimedia service in DAB system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1879331A true CN1879331A (en) | 2006-12-13 |
Family
ID=36284200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003801107326A Pending CN1879331A (en) | 2003-09-30 | 2003-12-30 | Apparatus and method for inserting multimedia stream for multimedia service in dab system |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1668806A4 (en) |
| KR (1) | KR100540174B1 (en) |
| CN (1) | CN1879331A (en) |
| AU (1) | AU2003289586A1 (en) |
| WO (1) | WO2005032018A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100527846B1 (en) * | 2003-11-20 | 2005-11-15 | 한국전자통신연구원 | Method of controlling bit rate in digital audio broadcasting system and apparatus and method for converting media stream using it |
| KR100916318B1 (en) * | 2008-04-08 | 2009-09-11 | 한국전자통신연구원 | Apparatus and method of transforming frame for digital multimedia broadcasting |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4306590A1 (en) * | 1992-09-21 | 1994-03-24 | Rohde & Schwarz | Digital broadcast network system |
| JPH07245574A (en) * | 1994-03-07 | 1995-09-19 | Nippon Hoso Kyokai <Nhk> | Digital signal transmission method |
| KR20020022147A (en) * | 2000-09-19 | 2002-03-27 | 정인수 | A Digital Television for Playing Multimedia Audio and Method for Playing Multimedia Audio using Digital Television |
-
2003
- 2003-09-30 KR KR20030067886A patent/KR100540174B1/en not_active IP Right Cessation
- 2003-12-30 CN CNA2003801107326A patent/CN1879331A/en active Pending
- 2003-12-30 AU AU2003289586A patent/AU2003289586A1/en not_active Abandoned
- 2003-12-30 EP EP03781079A patent/EP1668806A4/en not_active Withdrawn
- 2003-12-30 WO PCT/KR2003/002920 patent/WO2005032018A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| EP1668806A4 (en) | 2011-03-02 |
| EP1668806A1 (en) | 2006-06-14 |
| AU2003289586A1 (en) | 2005-04-14 |
| WO2005032018A1 (en) | 2005-04-07 |
| KR20050031661A (en) | 2005-04-06 |
| KR100540174B1 (en) | 2006-01-10 |
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Application publication date: 20061213 |