Object Carousel And Its Application In Information Service System

In this paper, we pointed out the defect in current data broadcast and analysed the DVB transport protocol, then we designed a scheme of information broadcast system based on object carousel, and described the design of the overall system, software structure of front-end and terminal, and their implementation.With introduced of syntactic structure in the object carousel transport protocol, includes DownloadDataBlock,DownloadInfoIndication,DownloadServerInitiate and DownloadCancel message. After analysed the encapsulation process of the data and information that packed in object carousel transport protocol, and then explained the method that orientation object quickly. With the demand of the transport module in browser, designed a viable model in object carousel transport, so browser can provide a viable alternation and response to many transport request at the same time.Parsing and displaying HTML document is one of important functions of embedded browser. The modules to realizes this function include: Transporting module, parsing module, human-computer interaction module. We adopt memory cache to buffer the important data in browser, and designed reasonable and valid cache replacement algorithm. In this way, the speed of web browsing is improved. Within the document-view architecture,Browser separates data operation with displaying, and enhances module independence. To provide friendly human-computer interaction, Browser accomplish management and rapid focus seeking for hyperlink.