CN1917620A - System of platform for supporting interactive value added service in use for digital TV - Google Patents
System of platform for supporting interactive value added service in use for digital TV Download PDFInfo
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Abstract
The invention comprises: front end broadcast system, service management system, optical fiber/coaxial cable hybrid network, feed back service network and set-top boxes. There is a mobile communication module and a service running middleware in the set-top box; the feedback service network is a mobile communication network; the mobile communication network is connected to the management system through internet. In the invention, the digital TV broadcast combines with the multi feedback ways of mobile network to provide multi interactive and individualized services.
Description
Technical field
The present invention relates to a kind of interactive value-added service support platform system that is used for Digital Television, belong to the digital television techniques field.
Background technology
The Digital Television industry of China has entered Rapid development stage.SARFT(The State Administration of Radio and Television) has worked out and has issued the relevant policies that advance the whole conversion of television digitization successively, and issued " China's cable TV is to the digitlization transition timetable ", requirement is at round Realization digital broadcast television in 2010, stops the broadcast of analog TV broadcasting in 2015.According to " broadcast and television information " issue " report of 2005-2006 China Digital TV industry " demonstration, by the end of the year 2005, Chinese cable digital TV user reaches 439.3 ten thousand, to the end of the year 2006 this numeral will break through 1,000 ten thousand.
The advantage of Digital Television is to realize substantially the high-fidelity transmission, be image, Television Sound Quality and Studio indifference, owing to adopt data compression technique, the channel of transmission one cover simulation program can be used to transmit simultaneously the digital TV programme of 4~6 covers, reduces emission, transmission cost greatly simultaneously.Digital Television outside the better pictures quality, can also be carried out many value-added services except bringing more channel.It is the integrated application of new and high technologies such as digital technology, microelectric technique, network technology and the communication technology, plays an important role in " integration of three networks " evolution.
Digital Television is compared with simulated television, and difference also has been to break through the service mode of traditional analog television One-to-All Broadcast formula, can realize two-way interactive TV service.The two-way interaction service is important technology characteristics of Digital Television, and it has represented the future thrust of TV, is a revolution to traditional tv, is the main motive force of Digital Television.Have only the interactive service of having realized, the Digital Television industry could be carried out as value-added services such as video request program, online game, ecommerce, VoIP.These value-added services are professional cores that digital-TV operator is constructed following profit model.But Digital Television will realize the interactive TV service, just must do bigger improvement to whole Digital Television support system platform, enables to support the two-way communication between user and the digital television service merchant.
Existing Digital Television support system platform is still based on the service mode of broadcast type, and main business is exactly the one-way transmission TV programme.Aspect the passback of user profile, the pattern that prior art is used just is to use wide area network or telephone wire to return, and it is very inconvenient to operate.Because above-mentioned many technical limitations can't provide abundanter selection and more excellent business to the user.Therefore, the value-added services of carrying out at present such as data broadcasting based on local interaction produce little effect, and digital-TV operator also is difficult to search out wide operation space.
On the other hand, the universal process method of carrying out the digital television interaction value-added service at present is to take the middleware mode.The middleware mode solved Digital Television from front end, to receiving terminal, again to this industrial chain of application program not by single producer technical monopoly, fundamentally solved the problem of operation cost.Mainly contain the DVB-MHP in Europe, the ATSC/OCAP of the U.S. and the middleware standard such as ARIB of Japan now, the middleware standard DTVM " Digital Television middleware Technology standard " (draft) of China finishes.
But, the middleware of adopting international standards exist scheme realize complicated, need problem such as payment great number intellectual property fees, and domestic middleware standard not formally promulgation as yet, still exist standard inconsistent, use problems such as privately owned technology, product be immature.How on the basis of existing digital TV platform, the interactive value-added service support platform system of digital broadcast television of a kind of high economy, high opening, high transplantability and high scalability is provided, to satisfy growing interactive value-added service demand in the whole transfer process of China Digital TV, remain a problem demanding prompt solution.
Summary of the invention
The purpose of this invention is to provide a kind of interactive value-added service support platform system that is used for Digital Television.The GSM net of existing mobile communication network of this system's utilization such as China Mobile, the GSM/CDMA net of CHINAUNICOM are as the data return path, and only needs input seldom just can realize the value added service of digital television service of two-way interaction.
For realizing above-mentioned goal of the invention, the present invention adopts following technical scheme:
A kind of interactive value-added service support platform system that is used for Digital Television comprises front end broadcast system, hybrid fiber coax and a plurality of set-top box, and described set-top box has the mobile communication function module, it is characterized in that:
Described supporting plateform system also comprises business management system and passback service network;
Wherein, described business management system comprises service distribution system, authentication registration authoring system and Subscriber Management System, and they are connected on the switch, and connects the Internet by router;
Described passback service network is a mobile radio communication, and this mobile radio communication is connected on the Internet by WAP server and passback Service Gateway, to realize and being connected of described business management system.
Wherein more preferably, described mobile radio communication is for providing in the GSM/GRPS/CDMA/SMS service any one communication network at least.
Wherein more preferably, described business management system at least also has value-added application service supporting system and interaction data broadcast control system, and described interaction data broadcast control system is connected with described value-added application service supporting system with described front end broadcast system respectively.
Wherein more preferably, described value-added application service supporting system comprises value-added service designer, built-in value-added service module and/or third party's value-added service module, and described built-in value-added service module and/or third party's value-added service module are connected with described value-added service designer by special line.
Wherein more preferably, described interaction data broadcast control system directly is connected with described value-added service designer, and is connected with described built-in value-added service module and/or third party's value-added service module by special line.
Wherein more preferably, described interaction data broadcast control system is with two kinds of mode playback interactive application data, and first kind is by One-to-All Broadcast front end system and MPEG basis passage, by broadcast mode transmission big data quantity information; Second kind is to utilize the Internet access door and IP basis channel transfer to make by oneself or point-to-point information.
Wherein more preferably, have Service Gateway in the described business management system, described Service Gateway is connected with described switch.
Wherein more preferably, has service operation environment middleware system in the described set-top box, described middleware system is between set-top box Drive Layer and the application layer, comprises system resource management device, security manager, graphics management device, the privately owned tabulation parser of SI/PSI/, ICP/IP protocol stack, DC/OC protocol stack, CA interface, character library engine, Java Virtual Machine, application manager and interactive application descriptive language engine.
Wherein more preferably, have passback Service Gateway and agency plant in the described passback service network, be used to realize returning forwarding, processing and the processing of authentication, safety communication and the business datum of interactive service.
Wherein more preferably, described supporting plateform system is by passback Service Gateway and agency plant and Digital Television value-added service provider's system docking.
Digital television interaction value-added service support platform system provided by the present invention is by the parsing and the performance of set-top box service operation environment middleware, given full play to the advantage of digital television broadcasting, multiple passback mode in conjunction with mobile radio communication provides can provide colourful interactive mode and individual business.That this supporting plateform system can be used for is wired, ground and satellite digital broadcasting system, can satisfy China Digital TV now and the needs of future development.
Description of drawings
Below, the present invention is further illustrated with reference to the drawings and specific embodiments.
Figure 1 shows that a kind of with system's composition schematic diagram of mobile radio communication as the digital tv network of return path.
Figure 2 shows that the operation workflow figure when digital television interaction value-added service support platform system is carried out the Digital Television value-added services businesses.
Fig. 3 externally plays the schematic diagram of interactive application data with two kinds of patterns for the interaction data broadcast control system.
Fig. 4 is that the integral body of service operation environment middleware system is formed structural representation.
Fig. 5 handles a process schematic diagram of broadcasting the simple interactive application of set-top box from front end for service operation environment middleware system.
Embodiment
Fig. 1 is a kind of with the system composition schematic diagram of mobile radio communication as the digital tv network of return path.This digital tv network is the hardware platform of digital television interaction value-added service support platform system provided by the invention (being designated hereinafter simply as the supporting plateform system), mainly comprises front end broadcast system, business management system, HFC (hybrid fiber coax) and passback service network.Wherein, the front end broadcast system comprises decoder, multiplexer, scrambler and modulator, is used to realize the broadcast of digital television signal.Business management system comprises service distribution system, authentication registration authoring system, Subscriber Management System etc., and they are connected on the switch, connects the Internet by router again.In addition, also have Service Gateway in this business management system, this Service Gateway is connected with above-mentioned switch.HFC utilizes Hybrid Fiber Coax to carry out the catv network of wideband digital communication, and it is the base hardware platform of transmitting digital television signal.The passback service network is the communication network that provides information interaction to serve for digital cable customers and business management system, and it can be realized by mobile radio communication.This mobile radio communication is connected on the Internet by WAP server and Short Message Service Gateway, thereby realizes and being connected of business management system.
In digital tv network shown in Figure 1, the mobile communication service of realization information passback is gprs service and/or note (SMS) business that China Mobile provided.GPRS is that the English of GeneralPacket Radio Service is called for short, and Chinese is GPRS, and it is a kind of wireless, packet-switched technology based on gsm system, provides end to end, the wireless IP connection.Gprs service has the advantage of " real-time online ", " chargeing according to quantity ", " quick login ", " high-speed transfer ", " switching freely ", and downloaded data and conversation can be carried out simultaneously.Because GPRS has above-mentioned plurality of advantages, therefore be well suited for being used for realizing the passback service of digital tv network.Certainly, the GPRS shown in Fig. 1 is an example.Information passback business also can use SMS business platform or CDMA/GSM communications platform to realize, just differing at this one has illustrated for example.
User terminal shown in Fig. 1 is a digital TV set-top box.Digital TV set-top box is a kind of conversion equipment that digital television signal is converted to analog signal, it is to the reduction of decoding through the image of digitalization compressed and voice signal, produce the video and the voice signal of simulation, provide high-quality TV programme to spectators by television indicator and stereo set.At present, digital TV set-top box has become a kind of embedded computing equipment, has perfect real time operating system, powerful CPU computing capability is provided, be used for coordinating controller top box each several part hardware facility, and easy-operating graphic user interface is provided, as the electronic program guides of enhanced-quality television, provide program introduction and the background information that both pictures and texts are excellent to the user.Simultaneously, digital TV set-top box can also realize as multiple application such as internet browsing, video request program, household electric business.
Employed set-top box need be installed professional communication modules such as supporting GSM/CDMA/GPRS in this digital television network.This is not difficult to realize, for example Chinese utility model patent " the ground digital TV receiving terminal " (patent No.: ZL 200420102664.0 with mobile retransmission function, the day for announcing: on January 4th, 2006) be exactly a kind of above-mentioned mobile communication function module that is equipped with, support the set-top box that returns by mobile communications network.
Supporting plateform system provided by the present invention is to carry out from the operational support system of Digital Television value-added service end to end for operator.This system can be divided into value-added application service supporting system, interaction data broadcast control system, terminal equipment service operation environment middleware system, passback Service Gateway and agency plant etc.Wherein, value-added application service supporting system and interaction data broadcast control system belong to the functional subsystem of business management system in the digital tv network shown in Figure 1, terminal equipment service operation environment middleware system is that passback Service Gateway and agency plant are the important component parts of the passback service network shown in Fig. 1 among the above-mentioned digital TV set-top box of embedding.
Figure 2 shows that the operation workflow figure when this supporting plateform system provides the Digital Television value-added services businesses.Video and voice data send the multichannel communication transmitter to, and the process scrambler carries out sending in the modulator and modulating after the scrambling processing again, sends into hfc plant then, transmits to the terminal TV user.At terminal TV user place, have the communication module of supporting the mobile communication service and the service operation environment middleware system that exists with the middleware form on the set-top box of use.This set-top box can be connected with agency plant with the passback Service Gateway by communication channels such as PSTN/xDSL/Cable Modem/GSM/GRPS/CDMA/SMS.The passback Service Gateway is connected the value-added service module that built-in value-added service module and third party provide with agency plant.These two value-added service modules are by private line access value-added service designer and interaction data broadcast control system.The interaction data broadcast control system connects above-mentioned multichannel communication transmitter.In addition, above-mentioned passback Service Gateway also is connected with authentication registration authoring system, Subscriber Management System respectively with agency plant.Subscriber Management System connects the authentication registration authoring system, and the authentication registration authoring system is connected with above-mentioned scrambler.
Value-added application service supporting system comprises built-in value-added service module, third party's value-added service module and the value-added service designer shown in Fig. 2.Built-in value-added service module and/or third party's value-added service module are connected with the value-added service designer by special line, the interaction data broadcast control system directly is connected with described value-added service designer, and be connected with built-in value-added service module and/or third party's value-added service module by special line.The value-added service designer provides the visual development environment that is used for the exploitation of mutual valued added applications and makes, and it mainly is made up of visual page making and edit tool, interactive application template library, analog tester etc.Value-added application service supporting system can be accepted the html page of HTML developing instruments making such as Dream weaver or FrontPage as original input data, so that further edit and revise.Built-in value-added service module comprises the subsystem that is used to realize functions such as audience rating investigating, professional immediate subscribing, VOD video request program.In addition, third party manufacturer also can follow the relevant value-added service module of relevant development specifications and interface definition exploitation and moves on this supporting plateform system.
Digital Television value-added service developer is by carrying out interaction page and using and describe, can realize developing fast and arrange various mutual valued added applications services, static data, application program or script and audio frequency, the video data stream of various value-added services are combined, play by the interaction data broadcast control system.
The interaction data broadcast control system is made up of interactive application data server, interactive application data OC/DC/IP encoder, interactive application playing controller, broadcast data server and programme information editing machine (comprising EPG editing machine, SI/PSI editing machine, the privately owned description form of interaction data editing machine etc.) etc.It is connected with multichannel communication transmitter in the front end broadcast system.This system is according to the requirement and the programme information of interaction data (asynchronous interactive application data, strict synchronism interactive application data and non-strict synchronisation application data), finish the interactive application data content obtain, broadcast the scheduling and control, encapsulate coding according to OC/DC or the IP mode stipulated in digital storage media instruction and control (DSM-CC) standard, enter the digital TV front-end multiplexer at last and broadcast.By integrated, finish and play and control with existing multiple digital television front equipment such as multiplexer, automatic broadcast system, IP-DVB gateway, Subscriber Management System, authentication registration authoring system etc.The Data Source of interaction data broadcast control system comprises interactive, dynamic data and the real time data etc. that value-added application service supporting system produces.By the binding synchronous signaling, can realize TS flow data synchronization mechanism.
As shown in Figure 3, interactive application data can externally be play with two kinds of patterns, and first kind is to use One-to-All Broadcast front end system and MPEG basis passage, by broadcast mode transmission big data quantity information.This mode is suitable for the higher video file of utilization rate.Second kind is to utilize bidirection internet access door and IP basis channel transfer to make by oneself or point-to-point information, and this mode is suitable for any data file.Insert between door and the One-to-All Broadcast front end system at bidirection internet, can directly carry out data transfer operation.
Service operation environment middleware system is in the inner execution of digital TV set-top box and manages the middleware system of mutual valued added applications.It is between set-top box Drive Layer and the application layer, takes modularized design, has good configurability, and the module that will install can be selected according to the practical business demand by operator and set-top box manufacturer.
The integral body of this middleware system is formed structure as shown in Figure 4, comprises the privately owned tabulation parser of system resource management device, security manager, graphics management device, SI/PSI/ as the core layer module, ICP/IP protocol stack, DC/OC protocol stack, CA interface, character library engine etc.In addition, this middleware system also has Java Virtual Machine, application manager and can understand engine of interactive application descriptive language etc.
In the present invention, be used to describe a kind of interactive application descriptive language that is based on exploitation such as HTML/XHTML/DHTML/SMIL/XML of interactive application task.This language can provide expansion contents such as interaction data (asynchronous interactive application data, strict synchronism interactive application data and non-strict synchronisation application data) sync tag, action label, and can support functions such as DOM (Document Object Model), CSS (Cascading StyleSheets), JavaScript and ECMA Script.In conjunction with the function of Java itself, this interactive application descriptive language can provide the local interaction and the remote interaction function of complete series.
In addition,, also can use the different class (Profile) or the subclass of interactive application descriptive language in the present invention, to alleviate the resource requirement that set-top box is resolved and supported the interactive application descriptive language according to the difference of interactive application task.The interactive application descriptive language of this different class is as shown in table 1.
The Profile/ class | Standard feature | Extended function | Remarks |
iCanwTV-ML Lite | Simplify HTML | Lock in time label, action script |
iCanwTV-ML TVBrowser | Simplify HTML | Support set box browser | The class wap protocol makes things convenient for set-top box to browse |
iCanwTV-ML Standard | Standard HTML CSS-TV, JavaScript/ECMA Script, DOM | Comprise above expansion | |
iCanwTV-ML Premium | Comprise above standard feature XHTML, DHTML, SMIL, XML | Comprise above expansion |
The interactive application descriptive language of the different class of table 1
Below, introduce above-mentioned service operation environment middleware system in conjunction with Fig. 5 and handle a process of broadcasting the simple interactive application of set-top box from front end.
As shown in Figure 5, video and voice data directly send multiplexer to, and html file and JAVA source file are then through sending multiplexer again to after the broadcast files system.Multiplexer sends the data that obtain to demodulation multiplexer, after the demodulation multiplexer decoding, resolves into video, audio frequency, HTML and JAVA source file.Wherein, video file and audio file are by after traditional decoding mechanism decoding, sending digital TV terminal to shows, HTML and JAVA source file then enter above-mentioned service operation environment middleware system, set-top box realizes the interactive application value-added service that digital television system provides by carrying out the instruction that comprises in the above-mentioned file.
The effect of passback Service Gateway and agency plant is to provide under the situation of return path at digital tv network, finishes authentication, the safety communication of passback interactive service, according to type of service, carries out forwarding, processing and the processing of business datum; Return Service Gateway and agency plant simultaneously and can be used as the front-end proxy agent server of Web application system such as online shopping mall, existing Web is served back-end system and digital tv network combines.According to value-added service character, passback Service Gateway and agency plant can with various value-added service providers' system docking, by system communications such as digital TV front-end Subscriber Management System, authentication registration mandate, video request programs, finish user's charge, mandate, program request processing.
According to the character of return path, passback Service Gateway and agency plant provide dissimilar security authentication mechanisms, shown in following table 2.
The Profile/ class | Security feature | Remarks |
SMS | SMS agreement and make the application encipher agreement by oneself | GSM/PHS |
Narrowband network | Make the application encipher agreement by oneself | PSTN/ISDN |
Broadband network | Make security protocols such as application encipher agreement, X509 digital certificate, SSL/TLS/https/Kerberos agreement by oneself | GPRS/CDMA/xDSL/CM/3G is non-, and lasting connection has certain influence to fail safe |
The security feature of table 2 passback Service Gateway and agency plant is described
In sum, digital television interaction value-added service support platform system provided by the present invention adopts modularized design, plug-in type to be integrated into main product design policy, at the digital broadcasting front end system, digital broadcasting front end system with the form of standard interface and traditional broadcast is realized seamless link, with the language description interactive service of expanding based on standard and broadcast; At user terminal, interactive service realizes by being embedded in the set-top box independently middleware; At two-way passback, independence is abstract with front end connecting system that is easy to expand and set-top box end middleware, can make system adapt to different two-way physical networks; Integral platform is in conjunction with digital certificate technique, for the affiliate who participates in operation provides safe and reliable value-added service operation management.
Above digital television interaction value-added service support platform system of the present invention is had been described in detail.For one of ordinary skill in the art, any conspicuous change of under the prerequisite that does not deviate from connotation of the present invention it being done all will constitute to infringement of patent right of the present invention, with corresponding legal responsibilities.
Claims (10)
1. an interactive value-added service support platform system that is used for Digital Television comprises front end broadcast system, hybrid fiber coax and a plurality of set-top box, and described set-top box has the mobile communication function module, it is characterized in that:
Described supporting plateform system also comprises business management system and passback service network;
Wherein, described business management system comprises service distribution system, authentication registration authoring system and Subscriber Management System, and they are connected on the switch, and connects the Internet by router;
Described passback service network is a mobile radio communication, and this mobile radio communication is connected on the Internet by WAP server and passback Service Gateway, to realize and being connected of described business management system.
2. the interactive value-added service support platform system of Digital Television as claimed in claim 1 is characterized in that:
Described mobile radio communication is for providing in the GSM/GRPS/CDMA/SMS service any one communication network at least.
3. the interactive value-added service support platform system of Digital Television as claimed in claim 1 is characterized in that:
Described business management system at least also has value-added application service supporting system and interaction data broadcast control system, and described interaction data broadcast control system is connected with described value-added application service supporting system with described front end broadcast system respectively.
4. the interactive value-added service support platform system of Digital Television as claimed in claim 3 is characterized in that:
Described value-added application service supporting system comprises value-added service designer, built-in value-added service module and/or third party's value-added service module, and described built-in value-added service module and/or third party's value-added service module are connected with described value-added service designer by special line.
5. as the interactive value-added service support platform system of claim 3 or 4 described Digital Television, it is characterized in that:
Described interaction data broadcast control system directly is connected with described value-added service designer, and is connected with described built-in value-added service module and/or third party's value-added service module by special line.
6. the interactive value-added service support platform system of Digital Television as claimed in claim 3 is characterized in that:
Described interaction data broadcast control system is with two kinds of mode playback interactive application data, and first kind is by One-to-All Broadcast front end system and MPEG basis passage, by broadcast mode transmission big data quantity information; Second kind is to utilize the Internet access door and IP basis channel transfer to make by oneself or point-to-point information.
7. the interactive value-added service support platform system of Digital Television as claimed in claim 1 is characterized in that:
Have Service Gateway in the described business management system, described Service Gateway is connected with described switch.
8. the interactive value-added service support platform system of Digital Television as claimed in claim 1 is characterized in that:
Has service operation environment middleware system in the described set-top box, described middleware system is between set-top box Drive Layer and the application layer, comprises system resource management device, security manager, graphics management device, the privately owned tabulation parser of SI/PSI/, ICP/IP protocol stack, DC/OC protocol stack, CA interface, character library engine, Java Virtual Machine, application manager and interactive application descriptive language engine.
9. the interactive value-added service support platform system of Digital Television as claimed in claim 1 is characterized in that:
Have passback Service Gateway and agency plant in the described passback service network, be used to realize returning forwarding, processing and the processing of authentication, safety communication and the business datum of interactive service.
10. the interactive value-added service support platform system of Digital Television as claimed in claim 9 is characterized in that:
Described supporting plateform system is by passback Service Gateway and agency plant and Digital Television value-added service provider's system docking.
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