The Research Of Digital Video System Based On Embedded Linux Operating System

Nowadays, with the rapid development of the Internet and multi-media technology, Internet video system has more and more been widely put into use in our life. Video-monitoring system is one of the examples, which is advancing digitally, networkingly and intelligently. There is a trend that no matter what the distance is, real-time monitoring can be implemented using IP network, changing analogue video signal into digital signal. The core is a video capture device directly connected to the Internet, with the function of real-time video capture, compression and transmission.Considering the present situation of ships and the development of current technology, this research work offers a solution to the real-time video monitoring based on Embedded System, for such requirement is called on for key parts of sailing passenger liners or oil tankers and maritime enforcement.According to the design requirement, ST2410 hardware platform and Embedded Linux Operating System are chosen to be experimented, implementing the real-time display of the video pictures on the development platform. Video data compression of USB digital camera and the Internet transmission are carefully analyzed and studied as well. Thus, a design of a convenient and economical device on real-time video capture and transmission is realized.This dissertation first introduces the design and implementation of the technology of Embedded Linux System, including the following research work—establishing the platform of Embedded Linux (PC and target PC), cutting and customizing Linux core, designing and implementing bootloader and producing and configuring Root file system. And then it deals with the implementation of the USB camera driver and the picture collection of the camera based on Video4Linux. Besides, the dissertation also involves the establishment of Qtopia, the display of the program with Qt interface, the realization of picture collection and display based on Embedded Linux System and the researches into related technology on the Internet video system. Finally, the experiment results are analyzed and evaluated and the future research targets are mentioned based on the current project.