移动便携图像存储系统的设计  

Design of Portable Image Storage System

作　　者：吕耀文[1,2] 王建立[1] 曹景太[1] 杨轻云[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院研究生院,北京100049

出　　处：《液晶与显示》2012年第5期697-702,共6页Chinese Journal of Liquid Crystals and Displays

基　　金：国家863计划基金项目(No.2011AA8082035)

摘　　要：为满足Camera Link相机图像存储系统小型化、可移动、易携带的要求,设计了基于Xilinx公司V4系列现场可编程门阵列(FPGA)和TI公司6000系列数字信号处理器(DSP)相结合的硬件电路方案。首先,在FPGA的控制下图像数据缓存到一片SDRAM中,同时读出另外一片SDRAM中缓存的图像,经乒乓操作存储到两块固态硬盘中。其次,DSP与上位机用百兆网连接,在上位机的控制下,DSP从外部存储器接口(EMIF)中获取图像数据后,发送给上位机完成实时显示或者存储图像回放的功能。实验表明:在相机分辨率为640×480、帧频为100f/s且像素为10位时,该系统可以不丢帧地完成图像存储任务。在不需要实时显示的应用场合,系统可以单独完成脱机存储任务,满足Base型Camera Link相机的便携存储要求。In order to meet the requirement of miniaturization and portability of the image storage system for camera based on Camera Link interface,the hardware circuit was designed with a Virtex4 family Field Programming Gate Array（FPGA） from Xilinx company and a 6000 series Digital Signal Processor（DSP） from TI Company.First,under the control of FPGA,image data from Camera Link were cached in a SDRAM;at the same time,the image data which read from the other SDRAM were stored in other solid-state hard disks by ping-pang operation.Then the host computer connected with DSP through Fast Ethernet,under the control of the host computer,DSP acquired image data through External Memory Interface（EMIF） and sent it to host computer to realize real-time display or image playback function.The system that based on the scheme stored image successfully,past by the experiment in 640×480,100 f/s,10 bit monochrome.When the real-time display function is not needed,the designed system could accomplish image storage independently to meet the Base Camera Link type Camera portable storage requirements.

关 键 词：图像存储 CAMERA link接口 FPGA SDRAM控制器 DSP 

分 类 号：TP333.5[自动化与计算机技术—计算机系统结构] TP752.1[自动化与计算机技术—计算机科学与技术]