The Design Of Video Capture Module Based On Embedded System

The development of the embedded system involves two respects of software and hardware, hardware mainly including: according to employing the function to choose the systematic chip, board grades of circuit design, system magnitudes of circuit design; Software mainly including: the analysis, design and application of operating system, driver, application program and user figure interface, etc.The thesis mainly studies the design of the video capture module based on embedded system, having introduced development course of embedded system and relevant technology in detail from two respects of software and hardware. The research of systematic hardware controlling platform mainly includes: the architecture of PXA255 microprocessor, the structure and function of USB controller CY7C67300, and the application requirements of Xhyper255B development board; The research of systematic software operation platform mainly includes: the working mechanism of Linux operating system, the design of USB driver in Linux environment, the design of Linux LCD,touch-sensitive screen driver, and the implement of video capture, etc.The system has transmitted the digital output signal of video recording part to embedded system development board through USB port, and displayed video content through LCD. The embedded operating system chooses for Linux, and has design the concrete software and hardware scheme according to the characteristic of the system. The thesis has introduced the transplantation of embedded system leading procedure Boot Loader, the transplantation of Linux kernel, and major relevant technology used during embedded system development, on the basis of the detailed analysis, study, and employ, realizing the function of embedded system video capture and display based on Xhyper255B development board.