摘要
本文介绍了一种基于FPGA的新型视频信号发生器,它可以满足多种被测系统对输入视频信号制式的要求。该系统利用USB总线与上位机进行通信,同时解决了系统供电的问题。在FPGA内部,通过软件编程的方法生成视频信号的图像和时序控制信号,并送入视频D/A模块。通过实验对该视频信号发生器在电视跟踪性能检测中的应用进行研究,获取并分析了被测电视跟踪系统的跟踪性能指标。在使用中发现该系统具有可靠性高、通用性好、集成度高和体积小等特点,具有广泛的应用前景。
A new type of video signal generator based on FPGA is presented. It generates several kinds of video signals to meet the input requirements of most video systems under test. This generator communicates with a PC through USB port, and this method could also solve the problem of power supply. In the FPGA, the generator could generate image and sequence control signal through software program, and send the signals to video D/A module. Then experiments were carried out to verify the application of the generator in TV tracking capability test. The tracking capability parameters were obtained and analyzed. This generator has the merits of high reliability, good universality, high integration level, small size and so on, and has broad application prospects.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2008年第3期654-657,共4页
Chinese Journal of Scientific Instrument
