The Study On The Receiving Technology Of DVB Transport Stream Based On The PC Platform

With the rapid development of science and technology, the digitization progress of television broadcasting is advancing more and more rapidly. Furthermore, with the adoption of MPEG-2 as image compression and multiplex standard and the establishment of DVB as a recommended international standard, the application course of digital video broadcasting is accelerated dramatically. Meanwhile, the DVB transport stream is characterized by its high speed, large capacity, and integrated multimedia services carried along with the development of modem multimedia communication. And as PC is universal, interactive, flexible and powerful in the aspect of information processing compared with STB, Receiving DVB transport stream based on PC platform has become increasingly popular besides based on STB. The paper aims to give the full solution on the technology of Receiving DVB transport stream based on PC platform.In the paper, the general principle and techniques on the realization of receiving DVB transport stream based on PC platform are introduced and the scheme is proposed and the feasibility is justified. On the basis of these discussion, both the hardware and software implementations are elaborated in detail in this paper including the design of PCI receiving card based on the PCI local bus specification v2.2 and FPGA/CPLD, the development of WDM device driver based on the Windows OS platform which support power management and PNP, the software implementation of demultiplexing through the multi-thread technique based on DVB and MPEG-2 standards.In general, the implementation of the scheme proposed in this paper will ultimately contribute to the realization of multimedia services such as VOD, high speed DVB data broadcasting and conditional access system.