基于USB同步传输的超声内窥镜图像采集与处理系统设计-光学工程专业论文.docx

ABSTRACT  ? |伽t ‘  Meiω1 ultr础。nic imaging is one of 也e most important domains of modem medical imaging technology.Endos ∞pic Ultrasonography System(EUS) ∞mbinω 也e mediω1 technique of endosωpies wi也 ultrasound technology and modem ωmputer technology. Improving 伽 image quality ，enh缸lCing 也e function ，advancing 由e reliability and flexibi1ity are 也e directions of research on medical ultrasonic ima阴g me曲。d. In recent years ，USB(Universal S缸ial Bus) has bωme a widely us创 int即face technology，it has advantages 也at other bus is incomparable，such 拙 hot-plug， high-spe创 ands阳hility，low-power and so on. At present USB2.0 standard agrlωment 由at the USB bus trans如 rate upω480Mbps provides a high叩e创 data exchanges method betw创nωmputer and peripherals. 白白text finished the main work as follows: 1、Based on 由e function and features of USB2.0 chip 1涩-USB FX2LP from CYPRESS，ωmplet创也e design ofUSB2.0 isochronous trans如 circuit. 2 、Used the firmware framework provide by USB device manufacturers ， ∞mpleted 也e equipment firmware and finished compi1ing and debugging under Keil C environment. 3、I-nd叩也 analysis of 由eWDM，wrote 由eUSB 世iver and 曲咀W町e download 由iv配 and finished compi1ing and debugging under Windows DDK environment. 4、Used FPGA 础 the ωntroller and simulate data source，completed da阳 ‘ transmission exp町iment for USB intl由face cirω， its，v创fied stabi1ity and reliability of 阴阳，刷刷i阴阳 16MB/s 恤smission speed. In addition，got 伽 pigskin ‘ images used USB isochronous transfer in ultrasonic endoscope. 5、I-nd叩th ana1ysis of 由e charact町istics of medical ul伽80und image and various of enhancement methods of ul衍asound image，developed Medical Ultrasound Image Processing System. KEY 明ORDS: M创ical Ultrasound Endosω肘， USB2.0 isochronous transD町， WDM，Ultrasound Image Enhancement  目录 第…章绪论………，…….. 1.1 超声内窥镜成像系统概述…川……川..川……川.川..…川..川.….…...…川…川..…..，..川川.…川…川...…..…...……川………川.…...…H川…...…川..…..…….川…川.……川……..川 1 1.2 常用的图像采集接口...… H川….川…...川…... 1.3