| 摘要: |
| 采用H.323协议开发一个具有优良的图像和语音处理能力标准IP接口的单机终端设备。硬件平台采用Philips TM-1300作为中心处理芯片,配以外围的辅助芯片,构成一个完整的硬件系统。系统完成视频、语音的编解码以及通信协议处理;软件系统是在嵌入式实时多任务操作系统pSOS下开发的,各个任务由pSOS统一管理和调度。由于硬件平台几乎不变,在各种使用中仅改变软件,有利于功能和用途的扩展,因而具有良好的发展前景。 |
| 关键词: 可视电话 H.323 视频 语音 编解码 |
| DOI： |
| 投稿时间：2002-08-01修订日期：2002-11-21 |
| 基金项目: |
|
| Development of IP Videophone Terminal Based on DSP |
|
Guo Xiaoqiang, Luo Hui
|
| (College of Telecommunication Engineering, Beijing University of Post and Telecommunication, Beijing, 100876) |
| Abstract: |
| The videophone stand-alone terminal unit with standard IP interface was developed using H.323 protocol. The DSP chip TM-1300 is the main processor of hardware,and pSOS is used as operating system and manages multitasks of the whole system which could deal with encoding and decoding of video,speech and communication protocol. The purpose and function of the system can be updated. |
| Key words: videophone H 323 video speech codec |
