CN102769799A - Method and system for realizing digital television business distribution service in IP (internet protocol) network - Google Patents
Method and system for realizing digital television business distribution service in IP (internet protocol) network Download PDFInfo
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Abstract
The invention discloses a method and a system for realizing a digital television business distribution service in an IP (internet protocol) network. The method comprises the steps of: receiving a digital television signal by a digital television receiving and converting device; extracting various control and service information in the signal to carry out program navigation service or provide a long-distance interface; receiving various operations of a user; obtaining the program navigation service or calling the long-distance interface to carry out the various operations by a receiving end user; generating a TS (transport steam) of a service needing to be watched by the user according to a user operation, packaging the TS in an IP packet and sending to the IP network; obtaining the IP packet by a receiving end through the IP network and extracting the TS stream; and carrying out audio/video program playing or data information service. According to the method and the system disclosed by the invention, terminal equipment with an IP network connecting function, such as a PC (Personal Computer), an intelligent cell phone, a tablet personal computer, an electronic book and the like can obtain a digital television service through the domestic IP network or the other IP networks.
Description
Technical field
The present invention relates to the broadcast communication field, particularly realize technology and method professional and service through IP local area network (LAN) distribution digital TV contents.
Background technology
The process of current broadcast television digitization is progressively accelerated, and technology reaches its maturity, and the users that develop into of DTV provide a large amount of broadcast TV program contents.The baseband transmission form of DTV still adopts TS stream (to be the abbreviation of MPTS Transport Stream basically; In ISO/IEC 13818-1, define); And transmission network has still adopted traditional television network broadcast, has comprised wired, satellite and terrestrial wireless three major types.Internet technology is also in continuous development simultaneously; Constantly popularize based on the universal gradually particularly WIFI network of the local area network (LAN) of IP agreement; The various videos that connect based on IP are constantly weeded out the old and bring forth the new with playing terminal equipment such as notebook computer, smart mobile phone, panel computer and e-book or the like equipment, make that IP based network obtains Video service and teleview to become very urgent demand.
Because the transmission mechanism of television network broadcast and agreement and IP network transmission mechanism and agreement are incompatible, therefore use the receiving terminal that possesses the IP network linkage function to watch that the digital television program content is also very inconvenient.
Watch that the digital television program content must use the corresponding digital TV set-top box, and the IPTV STB can't be watched the digital television program content;
The service of digital TV contents to be provided for IPTV user, need operator to convert digital television signal into IPTV service and re-send in the Wide Area Network and serve at the IPTV system front end;
If use PC (PC) or notebook computer, also must buy DTV receiving card equipment and be connected to computer through hardware interface, also to connect television signal line simultaneously and just can watch;
For the terminal of the IP network connected mode that only possesses WIFI,, can't watch the digital television program content through the mode that connects digital tv receiver card like equipment such as smart mobile phone, panel computer and e-book.
IP network has adopted different physical mechanisms with digital TV network; Common in the market apparatus of digital television receiving mainly is to be main with DTV STB; Also have to be exactly the DTV receiving card equipment that provides for PC, its interface mode mainly contains PCI, PCMCIA, 1394 and interface such as USB.This DTV receiving card can only be used by the separate unit terminal, can't service be provided for terminal such as the equipment such as smart mobile phone, panel computer and e-book that do not possess this class interface simultaneously.
Summary of the invention
The present invention provides a kind of method and system that in IP network, realize the digital television business distribution services; Mainly having realized extracting various control informations and business information in the digital television signal carries out for receiving terminal program navigating service or remote interface being provided after the dissection process; And from digital television signal, extract the TS stream that the user selects program by user's selection operation; Be encapsulated in the UDP/IP bag IP network is transmitted, realize making various terminal equipment such as the services of PC computer, smart mobile phone, panel computer and e-book or the like equipment receiving digital television that possess the IP network linkage function.
The present invention provides a kind of method that in IP network, realizes the digital television business distribution services, comprises step:
A, various descriptors and the business information extracted in the digital television signal are carried out through IP network the Electronic Program Guide service being provided after dissection process and the storage, and are accepted user's various control operations;
B, user obtain the Electronic Program Guide service or call remote interface through IP network at receiving terminal, carry out the various operations of watching;
C, according to user's control and solicit operation, receive and generate the user and need watch professional TS stream, then this TS stream is encapsulated into that the mode with multicast, broadcasting or clean culture sends in the IP network in the IP bag;
D, receiving terminal obtain the IP bag that has encapsulated the TS stream that the user needs, and carry out audio/video program is play or data message is professional parsing and service.
Further; Said method also can have following characteristics: the said digital television signal of steps A is the TV signal that baseband transmission has adopted the digital television system of TS stream transmission mode to broadcast, like in wired DTV, satellite digital TV or the terrestrial DTV one or more.
Further; Said method also can have following characteristics: said IP network is the network local area network (LAN) particularly of various employing IP agreements, and the local area ethernet that connects like wireless WIFI network, WIMAX network, based on category-5 cable, two equipment network interface cards directly the network that connects are connected and the direct Ad hoc of equipment room network connects.
Further; Said method also can have following characteristics: the service of program navigating described in the steps A can adopt various Internet services based on the IP agreement, WEB service and streaming media service agreement and standard to realize; Preferably, can adopt HTTP, SIP, RTSP, SDP, HTML, XML or the like agreement and standard.Also can provide remote interface to supply receiving terminal to call in addition by the mode of self defined interface to realize the user to watch programs inquiry and control.
Further, said method also can have following characteristics: described program navigating service has comprised various channel searchs, program search, program selection, many picture navigation, the rendition list, programm name, program start time, program duration, program classification, brief introduction, credits present and various links or the like information and has controled service.Equally also can provide the mode of remote interface that above-mentioned various inquiry is provided and control.
Further, said method also can have following characteristics: receiving terminal described in the step B is the various terminal equipments that possess the IP network linkage function, like PC computer, smart mobile phone, panel computer, IPTV STB and e-book or the like equipment.
Further, said method also can have following characteristics: receiving the generation user described in the step C needs the process of the TS stream of watch programs to comprise tuning, demodulation multiplex process.
Further; Said method also can have following characteristics: the method that the stream of TS described in the step C is encapsulated in the IP bag has comprised that TS stream is encapsulated into UDP bag and two kinds of methods of TCP bag; The method that in two kinds of method for packing RTP encapsulation that the method that TS stream is encapsulated into the UDP bag adopts ETSITS 102 034 definition and the end user UDP encapsulation any one, TS stream are encapsulated into the TCP bag also can encapsulate or adopt HTTP and self-defining packaged type to be encapsulated into during TCP wraps with reference to the method for definition among the ETSI TS 102 034.
Further, said method also can have following characteristics: the business that the generation of reception described in step C user need watch comprises that various audio frequency and video are professional and the data message class is professional.
Further, said method also can have the visit that the described receiving terminal of following characteristics: step D can adopt special-purpose terminal software or the realization of various general browser that Electronic Program Guide is served.
The present invention also provides a kind of system that in IP network, realizes the digital television business distribution services; Comprise DTV receiving converter, IP network and receiving terminal; It is characterized in that; Said DTV receiving converter be responsible for extracting in the resolution digital TV signal various descriptors and business information and for receiving terminal provides door and EPG (Electronic Program Guide electronic program guides) service, and real-time response user operation is selected professional TS stream to be encapsulated in the IP bag user to transmit; IP network is responsible for connecting digital television reception conversion equipment and receiving terminal; Said receiving terminal is the various terminal equipments that possess the IP network linkage function, and receiving terminal is through inner special-purpose receiving terminal software or general browser and video player interview show navigation Service, playing audio/video programs and realization data message business service.。
Said DTV receiving converter comprises DTV demodulating unit, control module, EPG service and remote interface module, TS stream demultiplexing unit, CA decryption unit and TS stream IP encapsulation unit, wherein,
The DTV demodulating unit; According to the frequency of user's selecting tuning to user's selection; The Polymera TS stream that demodulates the multiplexing multi-channel tv programs of modulating in this frequency is that MPTS outputs to demultiplexing unit, and the number of DTV demodulating unit can be one or more.
Control module; Various control informations and the business information of utilizing TS stream demultiplexing unit to extract in the digital television signal are carried out dissection process; These information are offered EPG service and remote interface module, and control module receives user's operational order that EPG service and remote interface module pass back and controls the work of other each functional units according to user's operational order simultaneously.
EPG service and remote interface module are stored the various programme informations that control module is obtained, manage and are issued, and watch control operation for receiving terminal provides the program navigating service and receives the various of user, and these operations are sent to control module;
TS flows demultiplexing unit, and the TS of the program that the MPTS of DTV demodulating unit output will be watched user's selection according to the control through control module flows through and leaches, and forming that new single-unit order TS flows is that SPTS exports;
The CA decryption unit if program is encrypted, needs the CA decryption unit according to legal users authorization message and user key the TS stream of demultiplexing unit output to be deciphered the transparent program TS stream of output;
Further; Said system also can have following characteristics: said CA decryption unit also can not be arranged in the DTV receiving converter; But be arranged in receiving terminal; In the case, what comprise in the IP of the DTV receiving converter output bag is the TS stream of encrypting, decoding again after before receiving terminal TS flows into player, being introduced into the CA decryption unit and deciphering.
TS stream IP encapsulation unit; According to RTP method for packing or the end user UDP method for packing of system's setting TS stream is encapsulated in the UDP/IP bag, and to send in the IP network with the mode of broadcasting, multicast or clean culture according to system's setting be that the user provides service according to ETSI TS 102 034 definition;
Further, said system also can have following characteristics: described TS stream IP encapsulation unit also can be provided with according to system TS stream is encapsulated in the TCP/IP bag, is that the user provides service with the mode of clean culture.
Said IP network is that the network of various employing IP agreements and the direct IP between the equipment connect.
Further, said system also can have following characteristics: the local area ethernet that said IP network comprises wireless WIFI network, connect based on category-5 cable, two equipment network interface cards directly the network that connects is connected and equipment between directly Ad hoc network connect or the like.
Said receiving terminal is the various terminal equipments that possess the IP network linkage function; Receiving terminal is through inner special-purpose receiving terminal software or service of browser access program navigating and broadcast program; Special-purpose receiving terminal software or browser comprise that the user operates and EPG boundary element and player, wherein
User operation and EPG boundary element, interview show navigation Service or call remote interface is for the user provides navigation and operation interface and the EPG in the DTV receiving converter to serve and the remote interface module is uploaded user's operational order.
Player recovers TS stream from the IP bag that comprises TS stream that the DTV receiving converter broadcasts, TS stream is carried out decodes and plays.
Further; Said system also can have following characteristics: said receiving terminal can be one or more; Receive the terminal and adopt two kinds of receive modes; A kind of is Active Control Mode, the reception that can control figure television reception conversion equipment after receiving terminal lands through authentication has user's selection function; Another kind is a Passive Mode, does not land uncontrollable DTV receiving converter, the IP bag that comprises TS stream of passive receiving digital television receiving converter output.
Further, said system also can have following characteristics: said player can be embedded in receiving terminal software or the browser, also can be independent of receiving terminal software or browser is directly installed in the receiving terminal.
Further, said system also can have following characteristics: said DTV receiving converter can be that a separate equipment also can be used as a module and is built in the middle of STB, home gateway and the router.
After system according to the invention receives digital television signal; Extracting various control informations and business information in the digital television signal carries out for receiving terminal program navigating service or remote interface being provided after the dissection process; From digital television signal, extract the user and select professional TS stream by user's selection operation; Be encapsulated in the UDP/IP bag IP network is transmitted, realize making the various terminal equipment receiving digital television services that possess the IP network linkage function.
Compare with prior art, advantage of the present invention is:
Can make the various terminal equipments that possess the IP network linkage function can obtain digital television service; And need not add any hardware device at receiving terminal, smart mobile phone, panel computer and e-book or the like the portable terminal device that can be good at simultaneously to connecting apparatus of digital television receiving originally provides DTV to receive service.
Description of drawings
Fig. 1 is a structured flowchart of in IP network, realizing the system of digital television business distribution services according to the invention.
Fig. 2 is according to the invention at the flow chart of in IP network, realizing the method for digital television business distribution services;
Fig. 3 is according to the invention in the related protocol stack diagram that in IP network, realizes the method for digital television business distribution services;
Embodiment
Below in conjunction with each accompanying drawing concrete implementation procedure of the present invention is done further detailed explanation.
See also Fig. 1, this figure is a structured flowchart of in IP network, realizing the system of digital television business distribution services, and whole system comprises DTV receiving converter, IP network and receiving terminal, and concrete structure is following:
Wherein the DTV receiving converter can be that a separate equipment also can be used as a module and is built in the middle of the equipment such as STB, home gateway and router.The DTV receiving converter comprises DTV demodulating unit, control module, EPG service and remote interface module, TS stream demultiplexing unit, CA decryption unit and TS stream IP encapsulation unit, wherein,
The DTV demodulating unit, to the frequency that the user selects, the Polymera TS stream that demodulates the multiplexing multi-channel tv programs of modulating in this frequency is that MPTS outputs to demultiplexing unit according to user's selecting tuning;
Control module; Various control informations and the business information extracted in the digital television signal are carried out dissection process; The content that mainly needs to resolve is the network that comprises in the PAT (Program AssociationTable Program Association Table) that provides of the various tables among PSI (Program Specific Information Program Specific Information) and the SI (Service information business information), PMT (Program Map Table Program Map Table), CAT (ConditionalAccess Table CAT Conditional Access Table), NIT (Network Information Table network information table), SDT (Service Description Table SDT Service Description Table), EIT (Event Information Table Event Information Table) or the like the relevant information table, frequency, encryption authorization relevant parameter, modulation parameter, business information, event information an or the like information; These information are offered EPG service and remote interface module, and control module receives user's operational order that EPG service and remote interface module pass back and controls the work of other each functional units according to user's operational order simultaneously;
EPG service and remote interface module; The various programme informations that control module is obtained are stored, managed and issue; For receiving terminal provides program navigating service or remote interface, accept the various of user and watch control operation, and these operations are sent to control module; The program navigating service can adopt various Internet services based on the IP agreement, WEB service and streaming media service agreement and standard to realize, like HTTP, SIP, RTSP, HTML, XML or the like agreement and standard.The program navigating service has comprised various channel searchs, program search, program selection, many picture navigation, the rendition list, programm name, program start time, program duration, program classification, brief introduction, credits present and various links or the like information and has controled service.Same EPG service and remote interface module provide when calling with the mode of remote interface, possess such information inquiry and operating function too.
TS flows demultiplexing unit, and the TS of the program that the MPTS of DTV demodulating unit output will be watched user's selection according to the control through control module flows through and leaches, and forming that new single-unit order TS flows is that SPTS exports;
The CA decryption unit if program is encrypted, needs the CA decryption unit according to legal users authorization message and user key the TS stream of demultiplexing unit output to be deciphered the transparent program TS stream of output; The CA decryption unit also can not be arranged in the DTV receiving converter simultaneously; But be arranged in receiving terminal; In the case; What comprise in the IP bag of DTV receiving converter output is the TS stream of encrypting, decoding again after before receiving terminal TS flows into player, being introduced into the CA decryption unit and deciphering.
TS stream IP encapsulation unit; Preferably; According to RTP method for packing or the end user UDP method for packing of system's setting TS stream is encapsulated in the UDP/IP bag according to ETSI TS 102 034 definition; Perhaps encapsulate, and to send in the IP network with the mode of broadcasting, multicast or clean culture according to system's setting be that the user provides service based on HTTP or TCP; The concrete realization of RTP method for packing of ETSI TS 102 034 definition simply is described as: be that n TS bag (the TS packet length is 188 fixing bytes) is encapsulated in the RTP bag; And then this RTP sealed install in the UDP bag; N is generally 7; This is that MTU MTU packet size in the network is when being 1500 bytes; For guaranteeing that IP bag size is no more than the numerical value that MTU selects, when MTU less than 1500, corresponding n should be according to calculating to guarantee that an IP bag size is no more than the numerical value of MTU.The end user UDP method for packing of ETSI TS 102 034 definition then is directly n TS bag not carried out other encapsulation to be potted directly into UDP and to transmit in wrapping, and it is consistent with the RTP method for packing that n is generally the selection of 7 its values.The protocol architecture of encapsulation can be with reference to figure 3.
IP network described in the system is the network local area network (LAN) particularly of various employing IP agreements, the local area ethernet that connects like wireless WIFI network, based on category-5 cable, two equipment network interface cards directly the network that connects is connected and equipment between directly Ad hoc network connect or the like.
Receiving terminal described in the system is the various terminal equipments that possess the IP network linkage function.It should be noted that receiving terminal can be one or more, receive the terminal and adopt two kinds of receive modes that a kind of is Active Control Mode, the reception that can control figure television reception conversion equipment after receiving terminal lands through authentication has user's selection function; Another kind is a Passive Mode, does not land uncontrollable DTV receiving converter, the IP bag that comprises TS stream of passive receiving digital television receiving converter output; Receiving terminal is through inner special-purpose receiving terminal software or service of browser access program navigating and broadcast program, and special-purpose receiving terminal software or browser comprise that the user operates and EPG boundary element and player.Player can be embedded in receiving terminal software or the browser, also can be independent of receiving terminal software or browser is directly installed in the receiving terminal.
User operation and EPG boundary element, interview show navigation Service or call remote interface is for the user provides navigation and operation interface and the EPG in the DTV receiving converter to serve and the remote interface module is uploaded user's operational order.
Player recovers TS stream from the IP bag that comprises TS stream that the DTV receiving converter broadcasts, TS stream is carried out decodes and plays.Player can be embedded in receiving terminal software or the browser, also can be independent of receiving terminal software or browser is directly installed in the receiving terminal.
The business that it should be noted that indication in the DTV can be that audio/video program also can be with various data encapsulation forms data encapsulation to be carried out the data message service of data distributing in TS stream, and the mode of issuing of stream can be that multiple modes such as download are broadcast, flow in real time, pushed to wheel.
The protocol stack that whole system and method relate to is as shown in Figure 3.
See also Fig. 2, this figure is the flow chart of the flow chart of the method that in IP network, realizes the digital television business distribution services according to the invention, and its main implementation procedure is following:
Control module in the DTV receiving converter according to system the control demodulation module is set and demultiplexing module is obtained various control informations from digital television signal and programme information mainly is PSI and SI information, and EPG service and remote interface module are stored and offered to these information analysis.
The various programme informations that step 11, EPG service and remote interface module are obtained control module are stored, are managed and issue, and program navigating service or remote interface, acceptance and response user's the control operation of watching is provided for receiving terminal;
EPG service is that receiving terminal provides program navigating service or remote interface with the remote interface module through IP network, and IP network is directly IP network connection between network or the equipment of various employing IP agreements here.The program navigating service can adopt various Internet services based on the IP agreement, WEB service and streaming media service technology and standard to realize.Like HTTP, SIP, RTSP, SDP, HTML, XML or the like agreement and standard.Remote interface can adopt self-defining mode to supply receiving terminal to call inquiry and the control operation of realization to program based on the IP agreement.
In the program navigating service, comprise various channel searchs, program search, program selection, many picture navigation, the rendition list, programm name, program start time, program duration, program classification, brief introduction, credits present and various links or the like information inquiry and controled service.The user can realize that at receiving terminal program selects through these information and operate services, and programme information is browsed, and program predetermination is watched or the like and to be operated.When adopting the mode of remote interface, also comprise above-mentioned information inquiry and control function.
The user is through receiving terminal interview show navigation Service or call remote interface; Receiving terminal can be the various terminal equipments that possess the IP network linkage function; Like equipment such as PC computer, notebook computer, panel computer, smart mobile phone and PDA, receiving terminal can adopt special-purpose terminal software or various general browser to realize the visit to the Electronic Program Guide service.
If step 13 user has passed through authentication, then the user is the Active Control Mode user, and EPG service and remote interface module provide the complete program navigating EPG page or control operation remote interface to the user, and response user's various operations;
Wherein control module receives the TS stream that user's needs are watched according to other functional unit of user operation control, and receiving the generation user needs the process of the TS stream of watch programs to comprise tuning, demodulation multiplex process.Realize by DTV demodulating unit and TS stream demultiplexing unit respectively; Wherein demodulation is that digital TV RF signals is carried out the TS stream of multi program multiplex that frequency tuning, channel demodulation and decoding recover the program place of user request is MPTS, and demultiplexing is from the MPTS at program place, to extract only to comprise single program stream SPTS that the user asks program; The TS stream of watching if desired is the program stream of encrypting; Whole process also need comprise a decrypting process; Be used for the TS program stream of encrypting is deciphered through the CA decryption unit, according to legal users authorization message and user key the TS stream of demultiplexing unit output carried out decryption restoration and go out transparent program TS and flow.
It should be noted that the CA decryption unit also can not be arranged in the DTV receiving converter; But be arranged in receiving terminal; In the case; What comprise in the IP bag of DTV receiving converter output is the TS stream of encrypting, decoding again after before receiving terminal TS flows into player, being introduced into the CA decryption unit and deciphering.
Carrying out selecting the TS stream of program to carry out the IP encapsulation user through TS stream IP encapsulation unit sends to receiving terminal; The method that TS stream is encapsulated in the IP bag has comprised that TS stream is encapsulated into UDP bag and two kinds of methods of TCP bag; The method that in two kinds of method for packing RTP encapsulation that the method that TS stream is encapsulated into the UDP bag adopts ETSI TS 102 034 definition and the end user UDP encapsulation any one, TS stream are encapsulated into the TCP bag also can encapsulate or adopt HTTP or other packaged type to be encapsulated into during TCP wraps with reference to the method for definition among the ETSI TS 102 034.
Can a plurality of users watch business simultaneously, and be divided into Active Control Mode and passive receiving mode, Active Control Mode, the reception that can control figure television reception conversion equipment after receiving terminal lands through authentication has user's selection function.It should be noted that the business here can be that audio/video program also can be the data message service of data encapsulation being carried out data distributing in TS stream with various data encapsulation forms.
Claims (29)
1. method that in IP network, realizes the digital television business distribution services is characterized in that step comprises:
A, various descriptors and the business information extracted in the digital television signal carry out through IP network Electronic Program Guide service or remote interface being provided after dissection process and the storage, accept user's various control operations;
B, user obtain the Electronic Program Guide service or call remote interface through IP network at receiving terminal, carry out various controls and solicit operation;
C, according to user's control and solicit operation, receive and generate the user and need watch professional TS stream, then this TS stream is encapsulated into that the mode with multicast, broadcasting or clean culture sends in the IP network in the IP bag;
D, receiving terminal obtain the IP bag that has encapsulated the TS stream that the user needs, and carry out audio/video program is play or data message is professional parsing and service.
2. the method for claim 1; It is characterized in that; The said digital television signal of steps A is the TV signal that baseband transmission has adopted the digital television system of TS stream transmission mode to broadcast, and comprises in cable digital TV, satellite digital TV, terrestrial DTV or the handheld digital TV one or more.
3. the method for claim 1 is characterized in that, said IP network be between network or the equipment of various employing IP agreements directly IP network connect.
4. the method for claim 1; It is characterized in that; The service of program navigating described in the steps A can adopt various Internet services based on the IP agreement, WEB service and streaming media service technology to realize; Also can provide remote interface to supply receiving terminal to call by the mode of self defined interface, realize various information inquiries and control operation.
5. method as claimed in claim 4; It is characterized in that described program navigating service and remote interface have comprised various channel searchs, program search, program selection, many picture navigation, the rendition list, programm name, program start time, program duration, program classification, brief introduction, credits present and various links or the like information and controled service or remote interface.
6. the method for claim 1 is characterized in that, receiving terminal described in the step B is the various terminal equipments that possess the IP network linkage function.
7. method as claimed in claim 6 is characterized in that, described receiving terminal can adopt special-purpose terminal software or various general browser to realize the visit of Electronic Program Guide service or calling of remote interface.
8. the method for claim 1 is characterized in that, the process that receives the TS stream that generates user's business of need watching described in the step C comprises tuning, demodulation multiplex process.
9. the method for claim 1 is characterized in that, the process that receives the TS stream that generates user's business of need watching described in the step C can also comprise that a decrypting process is used for the TS program stream of encrypting is deciphered.
10. the method for claim 1; It is characterized in that; The method that the stream of TS described in the step C is encapsulated in the IP bag has comprised that TS stream is encapsulated into UDP bag and two kinds of methods of TCP bag; The method that in two kinds of method for packing RTP encapsulation that the method that TS stream is encapsulated into the UDP bag adopts ETSI TS 102 034 definition and the end user UDP encapsulation any one, TS stream are encapsulated into the TCP bag also can encapsulate or adopt HTTP or other packaged type to be encapsulated into during TCP wraps with reference to the method for definition among the ETSI TS 102034.
11. the method for claim 1 is characterized in that, the business that the generation of reception described in step C user need watch comprises that various audio frequency and video are professional and the data message class is professional.
12. system that in IP network, realizes the digital television business distribution services; Comprise DTV receiving converter, IP network and receiving terminal; It is characterized in that; Said DTV receiving converter be responsible for extracting in the resolution digital TV signal various descriptors and business information and for receiving terminal provides EPG service or remote interface, and real-time response user operation is selected professional TS stream to be encapsulated in the IP bag user to transmit; IP network is responsible for connecting digital television reception conversion equipment and receiving terminal; Said receiving terminal is the various terminal equipments that possess the IP network linkage function, special-purpose receiving terminal software or general browser and the video player interview show navigation Service of receiving terminal through inside, calls remote interface, playing audio/video programs and realization data message business service.
13. system as claimed in claim 12; It is characterized in that said DTV receiving converter comprises DTV demodulating unit, control module, EPG service and remote interface module, TS stream demultiplexing unit, CA decryption unit and TS stream IP encapsulation unit.
14. system as claimed in claim 13; It is characterized in that; Described DTV demodulating unit; To the frequency that the user selects, the Polymera TS stream that demodulates the multiplexing multi-path digital television services of modulating in this frequency is that MPTS outputs to demultiplexing unit according to user's selecting tuning, and the number of DTV demodulating unit can be one or more.
15. system as claimed in claim 13; It is characterized in that; Various control informations and business information that described control module utilizes TS stream demultiplexing unit to extract in the digital television signal are carried out dissection process; These information are offered EPG service and remote interface module, and control module receives user's operational order that EPG service and remote interface module pass back and controls the work of other each functional units according to user's operational order simultaneously.
16. system as claimed in claim 13; It is characterized in that; The various programme informations that said EPG service and remote interface module are obtained control module are stored, are managed and issue; Watch control operation for receiving terminal provides the program navigating service and receives the various of user, and these operations are sent to control module.
17. system as claimed in claim 13; It is characterized in that; TS flows demultiplexing unit, and the TS of the business that the MPTS of DTV demodulating unit output will be watched user's selection according to the control through control module flows through and leaches, and forming that new single-unit order TS flows is that SPTS exports.
18. system as claimed in claim 13; It is characterized in that; This system also possesses a CA decryption unit, if professional the encryption needs the CA decryption unit according to legal users authorization message and user key the TS stream of demultiplexing unit output to be deciphered the transparent professional TS stream of output.
19. system as claimed in claim 13; It is characterized in that; Said CA decryption unit also can not be arranged in the DTV receiving converter, but is arranged in receiving terminal, in the case; What comprise in the IP bag of DTV receiving converter output is the TS stream of encrypting, decoding again after before receiving terminal TS flows into player, being introduced into the CA decryption unit and deciphering.
20. system as claimed in claim 13; It is characterized in that; Described TS stream IP encapsulation unit is encapsulated into TS stream in the UDP/IP bag according to the RTP method for packing or the end user UDP method for packing of system's setting according to ETSI TS 102 034 definition, and to send in the IP network with the mode of broadcasting, multicast or clean culture according to system's setting be that the user provides service.
21. system as claimed in claim 13 is characterized in that, described TS stream IP encapsulation unit also can be provided with according to system TS stream is encapsulated in the TCP/IP bag, is that the user provides service with the mode of clean culture.
22. system as claimed in claim 12 is characterized in that, said IP network is that the network of various employing IP agreements and the direct IP between the equipment connect.
23. system as claimed in claim 12; It is characterized in that, the local area ethernet that described IP network comprises wireless WIFI network, WIMAX network, connect based on category-5 cable, two equipment network interface cards directly the network that connects is connected and equipment between directly Ad hoc network connection etc.
24. system as claimed in claim 12; It is characterized in that; Said receiving terminal is the various terminal equipments that possess the IP network linkage function; Receiving terminal is through the special-purpose receiving terminal software or the service of browser access program navigating of inside, the service of calling remote interface, playing audio/video programs and realizing data message class business, and special-purpose receiving terminal software or browser comprise that the user operates and EPG boundary element and player.
25. system as claimed in claim 24; It is characterized in that; Said user's operation and EPG boundary element; The interview show navigation Service with call remote interface, for the user provides navigation with operation interface and the EPG in the DTV receiving converter serves and the remote interface module is uploaded user's operational order.
26. system as claimed in claim 24; It is characterized in that; Said player recovers TS stream from the IP bag that comprises TS stream that the DTV receiving converter broadcasts; Audio/video program TS stream is carried out decodes and plays, the professional TS stream of data message class is resolved, stores, represented or operation such as operation realizes the service that data message is professional.
27. system as claimed in claim 24; It is characterized in that; Said receiving terminal can be one or more; Receiving terminal adopts two kinds of receive modes, and a kind of is Active Control Mode, the reception that receiving terminal can control figure television reception conversion equipment has user's selection function after through the authentication login; Another kind is a Passive Mode, does not land uncontrollable DTV receiving converter, the IP bag that comprises TS stream of passive receiving digital television receiving converter output.
28. system as claimed in claim 24 is characterized in that, said player can be embedded in receiving terminal software or the browser, also can be independent of receiving terminal software or browser is directly installed in the receiving terminal.
29. system as claimed in claim 12 is characterized in that, said DTV receiving converter can be that a separate equipment also can be used as a module and is built in the middle of STB, home gateway and the router.
Priority Applications (1)
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| CN2011101116567A CN102769799A (en) | 2011-05-03 | 2011-05-03 | Method and system for realizing digital television business distribution service in IP (internet protocol) network |
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| CN2011101116567A CN102769799A (en) | 2011-05-03 | 2011-05-03 | Method and system for realizing digital television business distribution service in IP (internet protocol) network |
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| CN2011101116567A Pending CN102769799A (en) | 2011-05-03 | 2011-05-03 | Method and system for realizing digital television business distribution service in IP (internet protocol) network |
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