Development Of Device Driver Sotfware For Video Capture Card On Windows

With the development of technology, video surveillance has been increasinglyapplied to our lives. The accuracy and playback of video surveillance convenient for usto solve the dispute of life and work. As real-time video capture requirements, require ahigher transfer rate, mature PCI bus transfer in line with its requirements. On thedesktop computer’s operating system, Microsoft launched the Windows family ofoperating systems be used in the most widely. Windows XP now is a popular version, sothe development of the PCI device driver on Windows XP,is highly versatile andpractical.In this paper, the laboratory developed TMS320DM642DSP-based video capturecard issues of the PCI bus transfer, control technology, developed under the WindowsXP WDM driver for PCI devices, and drivers supporting the upper application, and theDSP chip Program. In the driver, implement the DSP’s master DMA mode data transfer,the liberation of the computer CPU, large amounts of data to achieve high-speedtransmission, smooth video playback. Drivers and applications as independent,communicate through the interface, the upgrade in the future, you can directly replace amodule without having all the updates, so maintenance is more convenient and faster.