CN101513054A - Method for transforming terrestrial dmb contents and gateway employing the same - Google Patents
Method for transforming terrestrial dmb contents and gateway employing the same Download PDFInfo
- Publication number
- CN101513054A CN101513054A CNA2007800323491A CN200780032349A CN101513054A CN 101513054 A CN101513054 A CN 101513054A CN A2007800323491 A CNA2007800323491 A CN A2007800323491A CN 200780032349 A CN200780032349 A CN 200780032349A CN 101513054 A CN101513054 A CN 101513054A
- Authority
- CN
- China
- Prior art keywords
- grouping
- terrestrial dmb
- rtp
- dab
- audio
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
-
- 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
- H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
- H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
- H04H60/82—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself the transmission system being the Internet
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1023—Media gateways
- H04L65/103—Media gateways in the network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/75—Media network packet handling
- H04L65/765—Media network packet handling intermediate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23608—Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2381—Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64322—IP
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/6437—Real-time Transport Protocol [RTP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64707—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless for transferring content from a first network to a second network, e.g. between IP and wireless
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/20—Arrangements for broadcast or distribution of identical information via plural systems
- H04H20/24—Arrangements for distribution of identical information via broadcast system and non-broadcast system
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
Abstract
The present invention provides a gateway for transforming a terrestrial digital multimedia broadcasting (DMB) contents. A gateway for transforming a terrestrial DMB contents includes an ensemble transport interface (ETI) demultiplexing unit for dividing the terrestrial DMB contents having ETI frame format into a fast information channel (FIC) and a main service channel (MSC); a session description protocol (SDP) packet processing unit for converting the FIC into a SDP packet; a transmission control protocol/Internet protocol (TCP/IP) packet generating unit for generating a TCP/IP packet based on the SDP packet; a real-time transport protocol (RTP) packet processing unit for converting the MSC into a first RTP packet; a user datagram protocol/Internet protocol (UDP/IP) packet generating unit for generating a UDP/IP packet based on the RTP packet; and an IP output unit for transmitting the TCP/IP packet and the UDP/IP packet through an IP network.
Description
Technical field
The present invention relates to T-DMB (DMB); More specifically, the gateway that relates to the method that is used for transforming terrestrial DMB content and this method of employing, it passes through the characteristic of the various communication networks of consideration and the formation of terrestrial DMB contents, and not only effectively provides DMB service by the terrestrial DMB private network but also by various communication networks.
Background technology
In general, T-DMB (DMB) is to provide for example DMB service of audio frequency, data and multimedia terrestrial DMB contents by the terrestrial DMB network when the subscriber moves.The terrestrial DMB network is the private network with low transmission rate that is realized by the special purpose interface technology of for example serving coffret (STI), ensemble coffret (ETI) and EN300-401 Coded Orthogonal Frequency Division Multiplexing (COFDM) (COFDM).Here, support the network of terrestrial DMB to be defined as the terrestrial DMB private network.
In the terrestrial DMB private network, generate the high compression content encoded and be used for terrestrial DMB service, can provide terrestrial DMB contents by channel with low transmission rate.Here, the high compression content encoded that provides by the terrestrial DMB private network is defined as terrestrial DMB contents.
In the past, provide terrestrial DMB contents by the terrestrial DMB private network.Yet when the terrestrial DMB Service Activation, terrestrial DMB contents is various.So, want that the request that receives the user of terrestrial DMB contents by various communication networks and terrestrial DMB private network increases.
There is conventional transportation method by the terrestrial DMB contents of Internet Protocol (IP) network.IP encapsulation and IP that this conventional transportation method presents terrestrial DMB contents abstractively divide into groups by the transmission of IP network.This conventional transportation method has several problems.At first, it does not consider the characteristic of various IP network.In addition, ignored by the feature of the multimedia transmission technology of the IP network of media information and control information and based on the formation of the terrestrial DMB contents of terrestrial DMB standard separately wherein.That is, whether the uncertain transmission of passing through the terrestrial DMB contents of IP network may.So, need to consider the characteristic of various communication networks and terrestrial DMB contents formation pass through the system that IP network provides terrestrial DMB service.
Summary of the invention
Technical problem
So, the purpose of this invention is to provide a kind of gateway that is used for method and this method of employing of transforming terrestrial DMB content, it passes through the characteristic of the various communication networks of consideration and the formation of terrestrial DMB contents, and not only effectively provides DMB service by the terrestrial DMB private network but also by various communication networks.
Other purpose of the present invention and advantage will be understood in following description and embodiment.And, it is obvious to the skilled person that and can realize these purposes of the present invention and advantage by parts required for protection and combination thereof.
Technical scheme
According to an aspect of the present invention, a kind of gateway that is used for transforming terrestrial dmb (DMB) content is provided, comprise: ensemble coffret (ETI) is separated multiplexed unit, and the terrestrial DMB contents that is used for having the ETI frame format is divided into fast information channel in dab receiver (FIC) and main service channel (MSC); Session Description Protocol (SDP) packet processing unit is used for FIC is converted to the SDP grouping; Transmit control protocol/Internet Protocol (TCP/IP) packet generating part, be used for generating the TCP/IP grouping based on this SDP grouping; The real-time transport protocol (rtp) packet processing unit is used for this MSC is converted to RTP grouping; User datagram protocol/the Internet protocol (UDP/IP) packet generating part is used for generating the UDP/IP grouping based on this RTP grouping; With the IP output unit, be used for transmitting described TCP/IP grouping and UDP/IP grouping by IP network.
According to a further aspect in the invention, a kind of method that is used for transforming terrestrial dmb (DMB) content is provided, has may further comprise the steps: the terrestrial DMB contents that a) will have ensemble coffret (ETI) frame format is separated and is multiplexed as fast information channel in dab receiver (FIC) and main service channel (MSC); B) FIC is converted to Session Description Protocol (SDP) grouping, and generates transmission control protocol/Internet Protocol (TCP/IP) grouping based on this SDP grouping; C) this MSC is converted to the RTP grouping, and generates the UDP/IP grouping based on this RTP grouping; And d) transmits described TCP/IP grouping and UDP/IP grouping by IP network.
According to a further aspect in the invention, provide a kind of ground digital multimedia function (DMB) content service system, having comprised: addressable part is used for DAB audio-source, DAB data source and multimedia sources are encoded; The ensemble multiplexing components, being used for based on the ETI standard and with DAB data behind the DAB audio frequency behind the described coding, the coding and the multimedia multiplexing behind the coding is terrestrial DMB contents; Gateway is used for terrestrial DMB contents is transformed to the grouping with IP form, inserting IP network, or terrestrial DMB contents is transferred to Coded Orthogonal Frequency Division Multiplexing (COFDM) (COFDM) addressable part, to insert the terrestrial DMB private network; With this COFDM addressable part, be used for terrestrial DMB contents being encoded based on COFDM, and the terrestrial DMB contents behind the transmission coding, wherein this gateway is separated terrestrial DMB contents based on the ETI frame format and is multiplexed as FIC and MSC, based on SDP and TCP/IP FIC is converted to the grouping with IP form, and MSC is converted to grouping with IP form based on RTP and UDP/IP.
Advantageous effects
The present invention passes through the characteristic of the various communication networks of consideration and the formation of terrestrial DMB contents, and can not only effectively provide terrestrial DMB service by the terrestrial DMB private network but also by various communication networks to the user.
Description of drawings
According to the following description of the preferred embodiment that provides in conjunction with the accompanying drawings, above and other purpose of the present invention and feature will become clear, wherein:
Fig. 1 is the block diagram that illustrates traditional T-DMB (DMB) service system;
Fig. 2 is the block diagram that illustrates according to the gateway of the embodiment of the invention;
Fig. 3 is the detailed diagram that illustrates the first content converter of Fig. 2;
Fig. 4 is the detailed diagram that illustrates the second content converter of Fig. 2;
Fig. 5 is the detailed diagram that illustrates the 3rd contents transformer of Fig. 2;
Fig. 6 is the flow chart that illustrates according to the method that is used for transforming terrestrial DMB content of the embodiment of the invention;
Fig. 7 is the detail flowchart that illustrates the method for the fast information channel in dab receiver (FIC) that is used for conversion Fig. 6;
Fig. 8 is the detail flowchart that illustrates according to the method for the main service channel (MSC) that is used for conversion Fig. 6 of first embodiment of the invention;
Fig. 9 is the detail flowchart that illustrates according to the method that is used for conversion MSC of second embodiment of the invention; With
Figure 10 is the detail flowchart that illustrates according to the method that is used for conversion MSC of third embodiment of the invention.
Embodiment
By illustrate hereinafter with reference to the accompanying drawings for the following description of embodiment, other purpose of the present invention and aspect will become clear.
Fig. 1 is the block diagram that illustrates traditional T-DMB (DMB) service system.
As directed, terrestrial DMB service of the present invention system comprises digital audio broadcasting (DAB) audio coder 100, DAB data encoder 200, multimedia coding device 300, ensemble multiplexer 400, gateway 500 and Coded Orthogonal Frequency Division Multiplexing (COFDM) (COFDM) encoder 600.
Multimedia multiplexing in DAB data in the DAB audio frequency, DAB data encoder 200 of ensemble multiplexer 400 after with the coding of coding in the DAB audio coder 100 behind the coding of coding and the multimedia coding device 300 behind the coding of coding is ensemble coffret (ETI) frame, and to gateway 500 these ETI frames of output.This ETI frame comprises main service channel (MSC), fast information channel in dab receiver (FIC) and ETI header.MSC comprises terrestrial DMB contents information, i.e. DAB audio-frequency information, DAB data message and multimedia messages.FIC comprises the control information that is used to control terrestrial DMB contents, i.e. the tectonic information of terrestrial DMB contents and information on services.The ETI header comprises the ordinary construction information of ETI frame.That is, the form that terrestrial DMB contents is based on the ETI frame generates, and the ETI frame comprises based on the MSC of terrestrial DMB standard, FIC and ETI header.
Gateway 500 transmits the terrestrial DMB contents that the form by the ETI frame generates to COFDM encoder 600, or the network that inserts based on the terrestrial DMB service system and terrestrial DMB contents is transformed to the grouping of (IP) form that has Internet Protocol.In the DMB private network, gateway 500 arrives COFDM encoder 600 with terrestrial DMB contents bypass (bypasses).Then, COFDM encoder 600 is based on COFDM form coding terrestrial DMB contents, and transmits terrestrial DMB contents behind the coding by the DMB private network.In addition, in the IP-based various communication networks except the DMB private network, the terrestrial DMB contents that gateway 500 will generate based on the form of ETI frame is transformed to the form of the IP in the various communication networks.Will be with reference to figs. 2 to the 5 concrete figure that describe gateway in detail.
That is, by adding terrestrial DMB contents conversion gateway 500, the terrestrial DMB service system provides terrestrial DMB contents by terrestrial DMB private network and various communication network.
Fig. 2 is the block diagram that illustrates according to the gateway of the embodiment of the invention.
As directed, when the terrestrial DMB service system inserts the terrestrial DMB private network, the terrestrial DMB contents that gateway 500 bypasses generate by the ETI frame format.So, insert the user terminal (being the terrestrial DMB special-purpose terminal) of terrestrial DMB private network and can serve by traditional terrestrial DMB service system, and the gateway 500 that need not to add.
Here, owing to can not only insert the terrestrial DMB private network but also insert various communication networks according to terrestrial DMB service according to the present invention system, so gateway 500 comprises a plurality of contents transformer, so that come transforming terrestrial DMB content based on the characteristic of various communication networks.For example, the mobile telecom network of described various communication network can be wired Internet, for example WLAN and wibro wireless Internet, for example code division multiple access (CDMA) and global system for mobile communications (GSM).Wired Internet is the most stable, and has high transmission bandwidth, and mobile telecom network is least stable, and has low transmission bandwidth.That is, gateway 500 characteristic that must be designed to support each communication network to consider above-mentioned communication network and efficient transformation terrestrial DMB contents.
For example, gateway 500 comprises three contents transformer, i.e. first content converter 210, second content converter 220 and the 3rd contents transformer 230.Correspond respectively to wired Internet, wireless Internet and mobile telecom network and describe first content converter 210, second content converter 220 and the 3rd contents transformer 230 thereafter.
Fig. 3 is the detailed diagram that illustrates the first content converter of Fig. 2.
As shown in Figure 3, first content converter 210 comprises that ETI separates multiplexed unit 301, Session Description Protocol (SDP) packet processing unit 302, transmits control protocol/Internet Protocol (TCP/IP) generation unit 303, real-time transport protocol (rtp) packet processing unit 303, user datagram protocol/the Internet protocol (UDP/IP) generation unit 305 and IP output unit 306.As mentioned above, design first content converter is used to support wired Internet.
When communication network is judged as wired Internet, has the terrestrial DMB contents of ETI frame format to 210 inputs of first content converter.
The ETI frame comprise the information with terrestrial DMB contents MSC, have terrestrial DMB contents control information FIC and have the ETI header of the tectonic information of ETI frame.
ETI separates the ETI header that the ETI frame of input is analyzed in multiplexed unit 301, the ETI frame is separated be multiplexed as MSC and FIC, and FIC is outputed in the SDP packet processing unit 302 and with MSC output in the RTP packet processing unit 304 respectively.
SDP packet processing unit 302 forms the SDP grouping based on the FIC of input.Here, based on SDP, generate the SDP grouping as the agreement of the descriptive session in the internet multimedia tranmission techniques.The SDP grouping comprises the session information of terrestrial DMB contents, for example the information (for example address, port, form) of the media information of founder's information of the title of session and purposes, session, session and transfer medium needs.That is, the SDP grouping comprises the control information of the terrestrial DMB contents that comprises among session information and the FIC.The session information of SDP grouping is imported and is kept in the reservations database by user terminal.So the control information of dialogue-based information and FIC generates the SDP grouping.
TCP/IP generation unit 303 receives from the SDP grouping of SDP packet processing unit 302 inputs, and generation TCP/IP divides into groups and the TCP/IP grouping is outputed in the IP output unit 306, is used for transmitting the SDP grouping by the IP form.Then, IP output unit 306 transmits the TCP/IP grouping by wired Internet.That is, use SDP and TCP/IP, be used for FIC is transformed to the grouping with IP form.
Therebetween, RTP packet processing unit 304 receives MSC and forms the RTP grouping.Here, the RTP that is based on as the agreement of transfer medium in the internet multimedia tranmission techniques of RTP grouping generates.The RTP grouping comprises the information of terrestrial DMB contents, for example DAB audio-frequency information, DAB data message, multimedia messages.In the present invention, by considering the transmission characteristic of terrestrial DMB contents, generate the RTP grouping.That is, set up the size and the PT Payload Type information of RTP grouping, be used for the transmission of terrestrial DMB contents.For example and the size that defines RTP grouping based on 8 bytes of terrestrial DMB contents, and the PT Payload Type of RTP grouping can be judged as terrestrial DMB contents measure-alikely.
UDP/IP generation unit 305 receives from the RTP grouping of RTP packet processing unit 304 inputs, generates the UDP/IP grouping, and the UDP/IP grouping is outputed in the IP output unit 306, is used for transmitting the RTP grouping by the IP form.Then, IP output unit 306 transmits the UDP/IP grouping by wired Internet.That is, use RTP and UDP/IP, be used for MSC is transformed to the grouping with IP form.
As mentioned above, divide terrestrial DMB contents by the media information and the control information of terrestrial DMB contents.The media information of terrestrial DMB contents comes conversion by the RTP as the agreement of transfer medium in the internet multimedia tranmission techniques, and the control information of terrestrial DMB contents comes conversion by the SDP as the agreement of descriptive session in the internet multimedia tranmission techniques.So the terrestrial DMB service system can be implemented as the characteristic that is suitable for the internet multimedia tranmission techniques, transmit the media information and the control information of terrestrial DMB contents separately.
Fig. 4 is the detailed diagram that illustrates the second content converter of Fig. 2.
As directed, second content converter 220 comprises that ETI separates multiplexed unit 401, SDP packet processing unit 402, TCP/IP generation unit 403, MSC and separates multiplexed unit 404, outer coding unit 405, RTP packet processing unit 406, UDP/IP generation unit 407 and IP output unit 408.As mentioned above, design second content converter is used to support wireless Internet.
Here, ETI separates the ETI that multiplexed unit 401, SDP packet processing unit 402, TCP/IP generation unit 403, RTP packet processing unit 406, UDP/IP generation unit 407 and IP output unit 408 carry out respectively with Fig. 3 and separates multiplexed unit 301, SDP packet processing unit 302, TCP/IP generation unit 303, RTP packet processing unit 304, UDP/IP generation unit 305 and IP output unit 306 identical functions.
Because second content converter 220 corresponding to the unsettled wireless Internet with bandwidth narrower than wired Internet, so need the additional decode procedure of MSC, is used to improve transmission efficiency.Second content converter 220 is divided into subchannel (that is, DAB audio stream, DAB data flow and media stream) with MSC, and each subchannel of conversion.
MSC separates multiplexed unit 404 and separates multiplexed unit 401 from ETI and receive MSC, and MSC separated is multiplexed as DAB audio stream, DAB data flow and media stream.RTP packet processing unit 406 generates the RTP grouping based on DAB audio stream and DAB data flow.Then, grouping generates the UDP/IP grouping to UDP/IP generation unit 407 based on RTP, and to the 408 output UDP/IP groupings of IP output unit.
On the other hand, in the decoding unit 405 media stream is carried out outer decoding outside.Here, outer decoding is the delete procedure of the unnecessary bytes in the media stream.Because media stream comprises extra byte by outer coding, so extra byte transmits dispensable for IP.For example, when media stream was mpeg 2 transport stream (TS), outer decoding unit 405 received and makes its size increase to the mpeg 2 transport stream TS of 204 bytes by outer coding, and generated the MPEG-2 multimedia TS of 188 bytes by outer decoding.
RTP packet processing unit 406 generates the RTP grouping based on outer decoded media stream.Grouping generates the UDP/IP grouping to UDP/IP generation unit 407 based on RTP, and the UDP/IP grouping is outputed in the IP output unit 408.
As mentioned above, second content converter 220 is divided into subchannel with MSC, changes and transmit each subchannel.Particularly, second content converter 220 reduces the size of multimedia TS by using additional outer decoding.So, need second content converter 220, be used to have the unsettled wireless Internet of the bandwidth narrower than wired Internet.
Fig. 5 is the detailed diagram that illustrates the 3rd contents transformer of Fig. 2.
As directed, the 3rd contents transformer 220 comprises that ETI separates multiplexed unit 501, SDP packet processing unit 502, TCP/IP generation unit 503, MSC and separates multiplexed unit 504, outer coding unit 505, media stream analysis/separate multiplexed unit 506, video-frequency basic flow (ES) generation unit 507, audio ES generation unit 508, RTP packet processing unit 509, UDP/IP generation unit 510 and IP output unit 511.As mentioned above, design the 3rd contents transformer and be used to support mobile telecommunications network.
Here, ETI separate multiplexed unit 501, SDP packet processing unit 502, TCP/IP generation unit 503, RTP packet processing unit 509, UDP/IP generation unit 510 and IP output unit 511 respectively the ETI shown in execution and Fig. 3 and 4 separate multiplexed unit 301 and 401, SDP packet processing unit 302 and 402, TCP/ IP generation unit 303 and 403, RTP packet processing unit 304 and 406, UDP/ IP generation unit 305 and 407 and IP output unit 306 and 408 identical functions.In addition, MSC separates multiplexed unit 504 and outer coding unit 505 is carried out respectively and the MSC of Fig. 4 separates multiplexed unit 404 and outer coding unit 405 identical functions.
Because the 3rd contents transformer 230 is corresponding to the unsettled mobile telecommunications network with bandwidth narrower than wired Internet and wireless Internet, so need be from the multimedia additional decode procedure of outer decoding unit 505 outputs.The 3rd contents transformer 230 is divided into audio stream and video flowing with media stream, and conversion they.
Media stream is analyzed/is separated multiplexed unit 506 and receives multimedia transmission stream from outer decoding unit 505, analyzes media stream, and media stream separated is multiplexed as video transmission stream (TS) and audio TS.
Video ES generation unit 507 is from the multiplexed unit 506 receiver, video TS of media stream analysis/separate, and generates video TS by video TS being separated multiplexed reconciliation grouping.RTP packet processing unit 509 receiver, video ES, and based on this video ES generation RTP grouping.Then, UDP/IP generation unit 510 receives the RTP grouping, and grouping generates the UDP/IP grouping based on RTP, and the UDP/IP grouping is outputed in the IP output unit 511.
Therebetween, audio ES generation unit 508 receives audio TS from the multiplexed unit 506 of media stream analysis/separate, and generates audio ES by audio TS being separated multiplexed reconciliation grouping.RTP packet processing unit 509 receives audio ES, and generates the RTP grouping based on this audio ES.Then, UDP/IP generation unit 510 receives the RTP grouping, and grouping generates the UDP/IP grouping based on RTP, and the UDP/IP grouping is outputed in the IP output unit 511.
As mentioned above, the 3rd contents transformer 230 is divided into video TS and audio TS with media stream, and generates video ES and audio ES by the additional decoding of carrying out video TS and audio TS, to reduce data size thus.So the 3rd contents transformer 230 is suitable for supporting to have the unsettled mobile telecommunications network of the bandwidth narrower than wireless Internet.
Fig. 6 is the flow chart that illustrates according to the method that is used for transforming terrestrial DMB content of the embodiment of the invention.
At first, in step S601, the terrestrial DMB contents with ETI frame format is separated is multiplexed as FIC and MSC.Here, when the terrestrial DMB contents of conversion all types network, execution in step S601 in the same manner.That is,, terrestrial DMB contents is divided into FIC (control information) and MSC (media information) according to the characteristic of internet multimedia transmission technology.
At step S602, FIC is converted to the grouping of IP form, to insert telecommunications network based on IP.Here, when the terrestrial DMB contents of conversion all types network, execution in step S602 in the same manner.Below, describe the FIC transfer process in detail with reference to figure 7.
In step S603, MSC is converted to the grouping of IP form, to insert telecommunications network based on IP.Here, when the terrestrial DMB contents of each type network of conversion, differently carry out the MSC transfer process.In the present invention, corresponding to wired Internet, wireless Internet and mobile telecommunications network, and three kinds of MSC transfer processes have been described.Below, describe these three kinds of MSC transfer processes in detail with reference to figure 8 to 10.
In step S604, the grouping of the IP form that will change in step S602 and S603 is sent in the IP network.Then, stop the conversion of terrestrial DMB contents.
Fig. 7 is the detail flowchart that illustrates the method for the fast information channel in dab receiver (FIC) that is used for conversion Fig. 6.
At first, in step S701, in FIC, extract the control information of terrestrial DMB contents.
In step S702, based on the control information of extracting with from the predetermined session information of user terminal, and generate the SDP grouping, needed session information not only comprises FIC but also comprises additional information because SDP divides into groups.
Next, in step S703, divide into groups by using the SDP grouping to generate TCP/IP.That is, stop the FIC transfer process S602 of Fig. 6.
Fig. 8 is the detail flowchart that illustrates according to the method for the main service channel (MSC) that is used for conversion Fig. 6 of first embodiment of the invention.
At first, in step S801, produce the RTP grouping based on MSC.As mentioned above and terrestrial DMB contents in the same manner based on the size of 8 bytes definition RTP grouping, and can judge the PT Payload Type of RTP grouping by the type of terrestrial DMB contents.
In step S802, grouping generates the UDP/IP grouping based on RTP.That is, stop inserting the MSC transfer process S603 of the needed Fig. 6 of wired Internet.
Fig. 9 is the detail flowchart that illustrates according to the method that is used for conversion MSC of second embodiment of the invention.
At first, in step S803, MSC separated be multiplexed as DAB audio stream, DAB data flow and media stream.Then, in step S804, media stream is carried out outer decoding.
In step S805, conciliate multiplexed DAB video flowing and in step S804, carry out outer decoded media stream based in step S803, separating multiplexed DAB audio stream, produce RTP and divide into groups.Here, the RTP grouping is to generate by the characteristic of considering the terrestrial DMB contents transmission technology.
In step S806, grouping generates the UDP/IP grouping based on RTP.That is, stop inserting the needed MSC transfer process of wireless Internet S603.
Figure 10 is the detail flowchart that illustrates according to the method that is used for conversion MSC of third embodiment of the invention.
At first, S803 is the same with step, in step S807 MSC is separated and is multiplexed as DAB audio stream, DAB data flow and media stream.Then, S804 is the same with step, in step S808, media stream is carried out outer decoding.
In step S809, outer decoded media stream separated be multiplexed as video transmission stream (TS) and audio transport stream packet (TS).Then, in step S810, generate video-frequency basic flow (ES) and audio frequency flows (ES) substantially based on video TS and audio TS.
In step S811, conciliate DAB video flowing after multiplexed and video ES and the audio ES that in step S810, generates based in step S807, separating the multiplexed DAB audio stream of separating after multiplexed, produce the RTP grouping.In step S812, grouping generates the UDP/IP grouping based on RTP.That is, stop inserting the needed MSC transfer process of mobile telecommunications network S603.
With reference to figure 8 to 10, according to network characteristic (that is, stability and transmission bandwidth) and differently decoding comprises the MSC of media information.So, terrestrial DMB contents can be transferred to various IP network effectively.
Can be embodied as program and be stored on the computer readable recording medium storing program for performing according to said method of the present invention.Computer readable recording medium storing program for performing is that can store can be by any data memory device of the data of computer system reads.Computer readable recording medium storing program for performing comprises read-only memory (ROM), random-access memory (ram), CD-ROM, floppy disk, hard disk and magneto optical disk.
The application comprises and korean patent application 2006-0061225 and 2006-0094380 number relevant theme of submitting to Korea S Department of Intellectual Property respectively on June 30th, 2006 and on September 27th, 2006, merges its full content by reference and here.
Although described the present invention at some preferred embodiment, it is evident that to those skilled in the art, can carry out various changes and modification, and not break away from the scope of the present invention that following claim limits.
Claims (11)
1. gateway that is used for transforming terrestrial dmb (DMB) content comprises:
Ensemble coffret (ETI) is separated multiplexing components, and the terrestrial DMB contents that is used for having the ETI frame format is divided into fast information channel in dab receiver (FIC) and main service channel (MSC);
Session Description Protocol (SDP) packet transaction parts are used for FIC is converted to the SDP grouping;
Transmit control protocol/Internet Protocol (TCP/IP) grouping and generate parts, be used for generating the TCP/IP grouping based on this SDP grouping;
Real-time transport protocol (rtp) packet transaction parts are used for this MSC is converted to RTP grouping;
User datagram protocol/the Internet protocol (UDP/IP) grouping generates parts, is used for generating the UDP/IP grouping based on this RTP grouping; With
The IP output block is used for transmitting described TCP/IP grouping and UDP/IP grouping by IP network.
2. according to the gateway of claim 1, wherein these RTP packet transaction parts comprise:
MSC separates multiplexed, is used for this MSC separated being multiplexed as digital audio broadcasting (DAB) audio stream, DAB data flow and media stream;
Outer decoding block is used to carry out the outer decoding of media stream, to generate outer decoded media stream thus; With
RTP packet transaction piece is used for based on described DAB audio stream, DAB data flow and outer decoded media stream, forms the 2nd RTP grouping.
3. according to the gateway of claim 2, wherein this RTP packet transaction piece comprises:
Multiplexed unit is conciliate in the media stream analysis, is used for by analyzing outer decoded media stream, is multiplexed as video transmission stream (TS) and audio TS and outer decoded media stream separated;
Basic stream (ES) generation unit is used to receive described video TS and audio TS, and generates video ES and audio ES respectively; With
The RTP packet processing unit is used for based on separating multiplexed DAB audio stream and DAB data flow from MSC and from the video ES and the audio ES of ES generation unit, and forms the 3rd RTP grouping.
4. according to the gateway of claim 1, wherein these SDP packet transaction parts form the SDP grouping based on information that comprises among this FIC and additional session information.
5. according to the gateway of claim 1, wherein this SDP packet transaction parts formation and terrestrial DMB contents have the RTP grouping of same size, and the PT Payload Type of this RTP grouping is judged as terrestrial DMB contents.
6. method that is used for transforming terrestrial dmb (DMB) content may further comprise the steps:
A) terrestrial DMB contents that will have ensemble coffret (ETI) frame format is separated and is multiplexed as fast information channel in dab receiver (FIC) and main service channel (MSC);
B) FIC is converted to Session Description Protocol (SDP) grouping, and generates transmission control protocol/Internet Protocol (TCP/IP) grouping based on this SDP grouping;
C) this MSC is converted to the RTP grouping, and generates the UDP/IP grouping based on this RTP grouping; With
D) transmit described TCP/IP grouping and UDP/IP grouping by IP network.
7. according to the method for claim 6, wherein this SDP grouping is based on the information and the additional session information that comprise among this FIC and forms.
8. according to the method for claim 6, wherein step c) may further comprise the steps:
C1) MSC is separated be multiplexed as DAB audio stream, DAB data flow and media stream;
C2) carry out the outer decoding of this media stream;
C3), form RTP grouping based on described DAB audio stream, DAB data flow and outer decoded media stream; With
C4) generate the UDP/IP grouping based on this RTP grouping.
9. method according to Claim 8, wherein this step c3) comprise that the following step poly-:
C3-1), be multiplexed as video TS and audio TS and outer decoded media stream separated by analyzing outer decoded media stream;
C3-2) generate video ES and audio ES respectively by using video TS and audio TS; With
C3-3), and form the 2nd RTP grouping based on described DAB audio stream, DAB data flow, video ES and audio ES.
10. according to the method for claim 6, wherein this RTP grouping and terrestrial DMB contents have same size, and the PT Payload Type of this RTP grouping is the terrestrial DMB contents type.
11. a T-DMB (DMB) content service system comprises:
Addressable part is used for DAB audio-source, DAB data source and multimedia sources are encoded;
The ensemble multiplexing components, being used for based on the ETI standard and with DAB data behind the DAB audio frequency behind the described coding, the coding and the multimedia multiplexing behind the coding is terrestrial DMB contents;
Gateway is used for this terrestrial DMB contents is transformed to the grouping with IP form, to insert IP network, maybe this terrestrial DMB contents is transferred to Coded Orthogonal Frequency Division Multiplexing (COFDM) (COFDM) addressable part, to insert the terrestrial DMB private network; With
This COFDM addressable part is used for based on COFDM this terrestrial DMB contents being encoded, and transmits the terrestrial DMB contents behind the coding,
Wherein this gateway is separated terrestrial DMB contents based on the ETI frame format and is multiplexed as FIC and MSC, based on SDP and TCP/IP FIC is converted to the grouping with IP form, and MSC is converted to the grouping with IP form based on RTP and UDP/IP.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2006-0061225 | 2006-06-30 | ||
| KR20060061225 | 2006-06-30 | ||
| KR1020060061225 | 2006-06-30 | ||
| KR1020060094380 | 2006-09-27 | ||
| KR10-2006-0094380 | 2006-09-27 | ||
| KR1020060094380A KR100826669B1 (en) | 2006-06-30 | 2006-09-27 | Gateway and method for transforming terrestrial DMB conents, system for transmitting terrestrial DMB and method for the same |
| PCT/KR2007/000494 WO2008002000A1 (en) | 2006-06-30 | 2007-01-29 | Method for transforming terrestrial dmb contents and gateway employing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101513054A true CN101513054A (en) | 2009-08-19 |
| CN101513054B CN101513054B (en) | 2011-04-20 |
Family
ID=38845739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800323491A Expired - Fee Related CN101513054B (en) | 2006-06-30 | 2007-01-29 | Method for transforming terrestrial dmb contents and gateway employing the same |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2039155A4 (en) |
| KR (1) | KR100826669B1 (en) |
| CN (1) | CN101513054B (en) |
| WO (1) | WO2008002000A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7917130B1 (en) | 2003-03-21 | 2011-03-29 | Stratosaudio, Inc. | Broadcast response method and system |
| US20090177736A1 (en) | 2007-12-14 | 2009-07-09 | Christensen Kelly M | Systems and methods for outputting updated media |
| US8631448B2 (en) | 2007-12-14 | 2014-01-14 | Stratosaudio, Inc. | Systems and methods for scheduling interactive media and events |
| EP3890217A1 (en) | 2008-02-05 | 2021-10-06 | StratosAudio, Inc. | Systems, methods, and devices for scanning broadcasts |
| WO2009100240A1 (en) | 2008-02-05 | 2009-08-13 | Stratosaudio, Inc. | System and method for advertisement transmission and display |
| SA109300427B1 (en) * | 2008-07-07 | 2013-09-08 | Akzo Nobel Coatings Int Bv | Packaged formulation comprising a compound liable to exothermic decomposition |
| EP2146452A3 (en) * | 2008-07-14 | 2012-09-12 | Electronics and Telecommunications Research Institute | Method for providing region-based dmb service, and apparatus and method for receiving region-based broadcasting service |
| KR100981953B1 (en) * | 2009-01-13 | 2010-09-13 | 주식회사 씨. 아이. 테크 | Data transmitting and receiving apparatus for transmitting and receiving broadband eithernet data and method of transmitting and receiving broadband eithernet data |
| KR101887549B1 (en) * | 2016-12-29 | 2018-08-13 | 주식회사 문화방송 | Method for providing precise gnss service through separately transmitting/receiving real-time and non-real-time data in channel and the system supporting the same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9827108D0 (en) * | 1998-12-10 | 1999-02-03 | Ensigma Ltd | Broadcast receivers |
| FI20012256A0 (en) * | 2001-11-20 | 2001-11-20 | Nokia Corp | Mobile networks and digital broadcasting services |
| CN1305276C (en) * | 2004-01-15 | 2007-03-14 | 中兴通讯股份有限公司 | Method and system for immediately processing real time media stream data packets |
| KR100600733B1 (en) * | 2004-02-19 | 2006-07-14 | 엘지전자 주식회사 | Media streaming home network system and the method of the same |
| EP1774778A4 (en) * | 2004-06-29 | 2007-08-08 | Korea Electronics Telecomm | Dmb/mobile telecommunication integrated service terminal apparatus and method for network linkage between dmb and mobile telecommunication |
| KR100626665B1 (en) * | 2004-08-03 | 2006-09-25 | 한국전자통신연구원 | Base of IP DMB data translation apparatus and method for DMB receiving system using that |
| FR2878397A1 (en) * | 2004-11-25 | 2006-05-26 | Thomson Licensing Sa | APPARATUS AND METHOD FOR DISTRIBUTING ON A LOCAL NETWORK OF BROADCAST SERVICES |
-
2006
- 2006-09-27 KR KR1020060094380A patent/KR100826669B1/en not_active IP Right Cessation
-
2007
- 2007-01-29 WO PCT/KR2007/000494 patent/WO2008002000A1/en active Application Filing
- 2007-01-29 CN CN2007800323491A patent/CN101513054B/en not_active Expired - Fee Related
- 2007-01-29 EP EP07708652A patent/EP2039155A4/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008002000A1 (en) | 2008-01-03 |
| EP2039155A1 (en) | 2009-03-25 |
| CN101513054B (en) | 2011-04-20 |
| KR20080003162A (en) | 2008-01-07 |
| KR100826669B1 (en) | 2008-05-02 |
| EP2039155A4 (en) | 2010-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101513054B (en) | Method for transforming terrestrial dmb contents and gateway employing the same | |
| CN101517553B (en) | Methods and apparatus for packetization of content for transmission over a network | |
| RU2639725C2 (en) | Data send/receive method and device for multimedia transmitting system | |
| KR101789640B1 (en) | Broadcasting signal transmission device, broadcasting signal reception device, broadcasting signal transmission method, and broadcasting signal reception method | |
| US20080199021A1 (en) | Method and Apparatus For Providing Ip Datacasting Service in Digital Audio Broadcasting System | |
| KR20080005063A (en) | Apparatus and method for providing ipdc service and apparatus and method for processing ipdc service | |
| AU2012270415B2 (en) | Method and apparatus for transmitting and receiving signaling information for reception of broadcast services in a digital broadcasting system | |
| MX2008013104A (en) | Method and apparatus for providing internet protocol datacasting service in digital audio broadcasting system. | |
| US10887242B2 (en) | Apparatus for transmitting broadcast signal, apparatus for receiving broadcast signal, method for transmitting broadcast signal and method for receiving broadcast signal | |
| US10009665B2 (en) | Method and device for transmitting/receiving broadcast signal | |
| KR101781884B1 (en) | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals | |
| CN115767140A (en) | Receiving device, receiving method and transmission unit in transmission system | |
| KR102238541B1 (en) | Device and method for transmitting and receiving broadcast signal | |
| KR101804926B1 (en) | Broadcast signal transmission device, broadcast signal reception device, broadcast signal transmission method, and broadcast signal reception method | |
| US7680145B2 (en) | Retransmission apparatus using packet method for DMB service | |
| CN102480634B (en) | The method, apparatus and system that in Mobile Multimedia Broadcasting, classified service is synchronous | |
| KR20050066802A (en) | Method for providing digital multimedia broadcasting service over internet | |
| KR100649399B1 (en) | Method and system for providing digital broadcasting service over ip | |
| Kim et al. | Design and implementation of DMBonIP gateway to provide Internet based DMB service | |
| KR100691304B1 (en) | Apparatus and method for dmb application program transmission using modulization of application program , and dmb broadcasting receiving apparatus and its method | |
| Lee | Implementation of DEMUX Constructing IP Packet from MPEG-2 TS | |
| KR101253165B1 (en) | Apparatus and method of processing digital broadcast signal | |
| KR101779116B1 (en) | apparatus and method for transmitting/receiving for broadcasting web site | |
| CN101753956A (en) | Method and system for transmitting mobile phone TV guide | |
| KR20160108071A (en) | Apparatus and method for transmitting and receiving digital radio broadcating service |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20160129 |
|
| EXPY | Termination of patent right or utility model |