摘要
在研究了SDI串行数字接口工作原理的基础上,提出了一种新型的高清晰度/标准清晰度数字电视信号采集传输用的SDI卡,阐述了SDI卡中的DVI输入接口、均衡电路、串并转换电路、并串转换电路、输出驱动电路和可编程时钟电路的设计,在硬件设计基础上介绍了FPGA中IP核设计和上位机程序设计方法和流程,并总结了开发调试中需要注意的问题.高清晰度数字视频SDI卡通过实际测试,实现了DVI、HD和SD信号的输入处理和输出转换,验证了设计方案的效果.
On the basis of SDI serial digital interface operation principle, we propose the newly developed high definition/standard definition digital video SDI card. Details are given of the DVI input interface, adaptive cable equalizer circuit, dual-rate deserializer circuit, multi-rate serializer circuit, multi-rate dual slew-rate cable driver circuit and programmable clock circuit. We also present the design methodology and flow of IP cores and PC software. The problems that can arise in the design are discussed. High definition digital video SDI card was realized and tested in real system and proved to be useful.
出处
《电子器件》
CAS
2007年第3期1014-1017,1020,共5页
Chinese Journal of Electron Devices
基金
天津市自然科学基金项目资助(05YFJMJC04400)
天津市高等学校科技发展基金项目资助(2006ba52)
