基于TMS320DM642的VoIP可视电话的关键设计  

Key Design of VoIP Video Telephone Based on TMS320DM642

作　　者：章学静[1] 何素娜 李金平[1] 

机构地区：[1]北京联合大学信息学院,北京100101 [2]北京永佳同创科技有限公司,北京100192

出　　处：《电视技术》2009年第6期105-107,116,共4页Video Engineering

摘　　要：首先提出了一种新的基于嵌入式DSP VoIP可视电话的设计方案。给出了两个关键设计:在C64x系列DSP的实时操作系统DSP/BIOS上,进行系统调度程序设计;使用类/微驱动模型开发视频驱动。实践表明,设计解决了系统复杂的调度与控制关系,简化了驱动的开发次序,大大提高了系统的实时性与可靠性。A new VolP video telephone scheme is proposed which is based on embedded DSP. Two key technologies are given that are scheduling programming of system on real-time operating system DSP/BIOS and video driver developing by class/mini driver model. In the practice, it not only solves the complex relations among scheduling and controlling, but also simplifies the driver developing, and makes the system more speedy and reliable.

关 键 词：可视电话 DSP/BIOS 系统调度 类/微驱动模型 视频驱动 

分 类 号：TN949.28[电子电信—信号与信息处理]