基于DSP的多制式数字电视字幕卡硬件设计  

DSP-based Hardware Design for Multi-system DTV Character Generator PC Card

作　　者：魏江力[1] 赵保军[1] 韩月秋 

机构地区：[1]北京理工大学电子工程系,北京100081

出　　处：《电视技术》2004年第9期47-48,52,共3页Video Engineering

摘　　要：基于DSP设计了一款多制式数字电视字幕卡,充分利用TI公司新一代媒体处理器DM642丰富的外设接口和其高性能CPU,配合SDI编解码芯片CLC031和CLC030,实现标准清晰度或高清晰度电视信号与来自PCI接口的PC机视频数据混合,结构紧凑,实用性强,可广泛应用于数字电视制作系统、非线性编辑等系统中。In this paper, a kind of multi-system DTV character generator PC card is designed based on DSP. The design makes full use of the rich peripherals and the high performance CPU of DM642, the new generation digital media processor and DM642 of TI to achieve the mixing of SDTV/HDTV signals with PC data transferred from PCI connector when working with SDI encoder/decoder CLC031/CLC030. It is very compact and of much practicality and can be widely used in digital TV production system, nonlinear editing system and etc.

关 键 词：DSP 数字电视 字幕卡 数字信号处理 

分 类 号：TN949.197[电子电信—信号与信息处理] TN911.72[电子电信—信息与通信工程]