本文实现了基于PCI总线接口的图像采集卡的整体设计，详细地论述了该系统的硬件设计、驱动程序设计和PCB版图设计。
This paper implements the whole design of image grab card based on PCI bus, and discusses the hardware design, driver design and PCB circuit design of this system in detail.
此外还研究了高宽长比功率驱动MOS晶体管的版图优化设计，通过采用高密度的版图结构使有效宽长比密度提高了一倍，从而使其占用的版图面积为缩小为原来的一半。
Besides, in order to minimize the area of output driving MOSFET, high W/L density structure is adopted with effective W/L density being doubled compared with normal MOS structure.
此外还研究了高宽长比功率驱动MOS晶体管的版图优化设计，通过采用高密度的版图结构使有效宽长比密度提高了一倍，从而使其占用的版图面积为缩小为原来的一半。
Besides, in order to minimize the area of output driving MOSFET, high W/L density structure is adopted with effective W/L density being doubled compared with normal MOS structure.
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