Object Carousel Packaging Software Research And Implementation In Data Broadcasting

With the development of digital technology, Radio and TV System is being to digital Development comprehensively,but providing digital broadband business is the primary means in digital cable networks,the way of Object Carousel can support multi-level catalog in Data Broadcast System.After connectivity of Internet and CATV,Object Carousel has a more strong technological advantage than other ways whether in the data capacity to support business, or expansion of their business in the packaging and broadcast of website documents.However, taking into account its independence of platform, Object Carousel uses a data structure of CORBA, whitch makes the system of Object Carousel a huge and complex interrelationship between the data structure,for the data broadcast server using the way of Object Carousel, the cost of resources is generally no problem,but Object Carousel Analysis of the objects will have a great expenditure of resources and real-time processing will become very difficult,in particular for the reception such as STB with limited resources of CPU.On the basis of further research in Object Carousel ,this paper presents and details a kind of object carousel program facilitating the decoding of receiver based on Digital Video Broadcast standard and China's digital TV broadcasting standard, at last,achieved and verified the coding scheme by Visual C++.through the optimized combination of the various object module,the receiver can reduce resources costs and increase analytical capacity, improve real-time, thus the transmission of a group of structured data from the server to the receiving terminal user becomes faster and more convenient.This paper introduces and researches the data broadcast DVB standard used in this project development firstly,and researches the principle of MPEG-2 and DVB,the principle of Object Carousel and the interrelationship between them in depth,making a theoretical foundation for the practical application.Then it makes a detailed design and presentation about the interface function, packaging steps, parameters and user interface including the four packaging,the independent TS and so on in the design.In the final chapter,it does a comparison between Data Carousel and Object Carousel and analysize the relationship and differences between them.