Design & Implementation Of PCI Interface Used In MPEG-2 Headend System

With VLSI developing rapidly, the technology of video compressing, storaging, transmitting and processing get great progress, which expand the applying field of video technology.The forepart of an video communication system is very important not only in traditional field, such as broadcast television, but also in rising field, such as the video service on internet, VOD. Our design goal is to realize compressing and the first level multiplexing of video communication system. First an analog video signal is decoded by SAA7 11 A to form a digital video signal complying with CCIR6O1 which then is compressed by an special chip IBMS42O, at last, the video ES is packed with audio ES to form TS by computer. The MPEG2 encoder system is based on PC platform and data exchanging is based on PCI bus.This thesis is about video capture and the hardware&software of PCI interface. The main subject including:The constructure of this MPEG2 encoder;~The principle and the system of TV, also the determination of TV signal抯 PCM parameter and the international standard of video PCM;昑he protocol of PCI and the driver of PCI device;The hardware&software design of some corresponding interfaces of MPEG2 encoder, allowing for the working condition, there is some discussing on programming of mater control;Debugging and testing.