Enhanced digital television business development necessarily requires a large variety of application data will be broadcast to the user receiver to provide more variety of digital services.Such as stocks, TV news websites, television messaging, personalized interfaces, weather, etc., need to front-end non-broadcast video and audio data.If each of these applications are to complete their own broadcast, the front-end system management, planning will be obviously more messy, programming requirements on the program staff is relatively high.Data Server (Data Server, DS) is in the context of this application submitted.
The concept of data server is part of program production and broadcast separation, which provides a platform for broadcast data, not on the content of specific applications.The data used in the programming is completed, can transmit the data server to provide both interfaces, the data broadcast according to specified requirements.A number of applications, data server to meet the broadcast.Also, if an application needs to transmit data on multiple frequencies can also be multiple data server through the instructions issued accordingly be realized.Meet the needs of a variety of flexible television.
Features
GM: packet command to Socket form, any application server or control center as long as the line with the rules used to send the message to complete the requirements, easy to use program producers.
Open: transport protocol are in line with the development of Chinese digital TV standards.The receiving end as long as the national standard, you can receive broadcast data.
Stability: The Linux operating system, by eliminating the security risks caused by the operating system.
Scalability: The system is modular in design, support for more protocols for the future leave a good interface.
Practical: The practical operation of the system, from front-end broadcast, the receiver receiving the data can be tested, meets and exceeds the actual requirements of the system.
Features
◆ support multi-output TS stream, television stations can be completed with a small amount of DS data for the application of a large number of broadcast digital channels.
◆ support a variety of data packing protocols, including DSMCC-DC, PES, Section, etc., for a variety of TV stations to provide better data application interface.
◆ part of the data in support of an application update function, Section agreement can only update one tableID the same PID in the data, DC protocol applied only update a few files.
◆ support dynamic updates of application data, application in the broadcast did not stop under the premise of real-time updates of data broadcast content.
◆ for data, video broadcast and data synchronization, broadcast data synchronization application provides a good broadcast platform.
◆ Support for multiple application servers broadcast data requirements, the capacity only by the data server hardware and network traffic requirements, and can maximize resources and save advertisement cost.
◆ can not stop data applications, the dynamic changes in data server broadcast bandwidth for new applications to stay out of broadcast bandwidth.
◆ perfect interface, providing up to fifty a few packets command, to provide a powerful broadcast control and monitoring, to meet new data applications.
◆ data server can also broadcast data applications in the machine, users simply upload the data produced good data on the server programs, broadcast times to be a simple command can be issued.
◆ the application of a clear definition for each data service has a unique identity, can be accurately identified data applications on their own data update command to complete the data service requirements.
◆ sound good, run the command errors and errors with good fault tolerance.
◆ provides alarm and operational status for the command, control and network management system to provide a complete interface.
Performance
◆ long and stable operation of the 13 Road TS stream, 104 video channels SI, PSI, 5 PES broadcast a dynamic, static DC applications 30 and 10 concurrent application of dynamic DC case 7x24 hours to achieve stable operation.
◆ broadcast bit rate support, minimum 0.5Mbps, the maximum 36Mbps.
◆ DC applications, the single greatest support 1M data broadcast file; an application supports a maximum of 50 sub, 2500 file package.
◆ Section supports more than 150 broadcast agreement PID concurrency.
◆ A TS support more than 200 PID stream of data broadcast.
◆ Application of real-time data refresh interval can be less than the minimum 30s.
◆ Socket supports more than 50 simultaneous connections and data processing.
Applications
[Standard Form Builder]
Standard Form Builder is an application server, used to provide background SI, PSI and other control data into a standard format and to the DVB data broadcasting server, but it also can meet the user's private data sheet generation.Section data can be generated good for broadcast DS, and upon request of the TDT and the EIT to refresh.Meanwhile, the DS can also be used for part of the data provided an update, update the same pID, different table_ID, table_ID_Ext the data part.
[Middleware application]
Middleware as an interactive application development platform, data applications, set-top box in the middle layer on top of this derivative application is difficult to count.One of the middleware application based on the file system, data stream files are in the form of TS.Data server supports almost any form of broadcast file directory system, file deletions and file updates, is a middleware application of choice for front-end broadcast solutions.
[Stock Server]
Stock is also a server application server that provides stock trading information broadcast, of interactive financial applications.Different front-end system packaged in different ways, but basically private Section broadcast, therefore, can be broadcast through the DS.
[Third-party application server features]
Because of this inherent open platform, making a variety of third-party developers can easily integrate the application server platform to this data.Such as: weather server, TV SMS server, E-mail servers, ad servers, and subtitles.