一种基于PCI总线的可升级标清字幕板卡设计思路

The Design Idea of Title Generation Board for Standard Definition Broadcast Based on PCI Bus

从板卡的构成,包括接口、D/A、A/D转换、计算机PCI接口及视频叠加原理等方面介绍字幕板卡的基本设计核心,此为一种广播级的标准清晰度的字幕板卡的设计思想,最终到应用实物并可支持未来的高清晰视频图像需求。

This paper introduces the design of title generator board core including the SDI interface, D/A, A/ D and PCI interface. It＇s a design idea for standard definition broadcast, based on PCI bus. The board can support high definition television in the future.