虚拟设备驱动程序及其在视频采集卡中的应用

Virtual Device Driver and Its Application in Video Acquisition Card

Ｗｉｎｄｏｗｓ９５ 作为运行于３２ 位保护模式下的操作系统，为保证系统的安全，通过屏蔽底层操作的方式将最终用户与硬件隔离开。本文结合视频采集卡的设计实例详细论述了基于 Ｗｉｎｄｏｗｓ９５ 平台的实时硬件控制的解决方案———虚拟设备驱动程序的基本原理和设计方法及其与 Ｗｉｎ３２ 应用程序的接口。

Windows95, as an operating system running under 32 bit protection mode, separates hardware from end users through the way of mask in order to keep the system safe. Giving an example of video acquisition card, this paper describes the basic principles and the scheme of virtual device driver which is the solution of real time hardware control in detail. And its interfaces to Win32 applications are also introduced.