摘要
针对高帧频数字摄像机没有模拟输出,不能在普通的视频监视器上显示的问题,研究设计了一种用于高帧频数字摄像机的实时显示系统。利用FPGA实现相应的转换控制,实现方法是将数字摄像机输出的图像数据,首先进行Camera Link标准到TTL标准的转换,转换后的数据存储在FPGA中的双端口存储器中。然后对存储器中的图像数据按一定标准进行读取,并经过数/模转换产生模拟信号,叠加符合国家标准的视频同步信号,最后转换成为标准视频信号,可在普通监视器上显示图像。另外变换后的信号有利于远距离传输,并且可使系统调光时采用普通视频信号检测。采用此种小型系统能使非标准摄像机应用得到进一步扩展。
Aim at the problem of high frame rate camera has not analog output and can not display on general monitor, a system that is used to display the image for high frame rate camera in real-time is designed. FPGA is used to control the corresponding conversions. First, the digital camera output＇s image data from Camera Link is converted to TTL standard signals, the data are memorized in the memory in FPGA. Then, according to some standard the data is read from memory and is converted to analog signals, superposing standard synchronizing signals. Finally, the image signals are transformed to standard video signals. The finally video signals can be displayed on general monitor. The TTL standard signals are also available for long distance transmission .It is possible for optical adjustment of system using general video signals .It may expand the application of the nonstandard camera through adapting the minitype device.
出处
《电路与系统学报》
CSCD
北大核心
2007年第1期82-84,47,共4页
Journal of Circuits and Systems
