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| 基于DM642的流媒体采集压缩系统的研制 | |
| 引用本文： | 王跃平,苏月明,刘云生.基于DM642的流媒体采集压缩系统的研制[J].计算机工程与科学,2010,32(2):114-117. |
| 作者姓名： | 王跃平 苏月明 刘云生 |
| 作者单位： | 1. 海军工程大学电子工程学院,湖北,武汉,430033 2. 目标与环境光学特性国防科技重点实验室,北京,100854 3. 华中科技大学软件学院,湖北,武汉,430074 |
| 基金项目： | 湖北省自然科学基金资助项目(2007ABA311) |
| 摘 要： | 本文阐述一个基于DSP的四路实时音视频采集压缩终端的硬件设计和实现过程。重点讨论了基于TMS320DM642主处理芯片的音视频处理系统的设计,另外对存储电路、网络接口、IIC接口和电源等模块也做了深入讨论。最后对硬件做了信号仿真,指出电路设计和PCB布局布线的关键要点。软件测试结果表明,视音频主观质量较优,系统硬件工作稳定可靠,具有通用性。 |
| 关 键 词： | 视频编码 TMS320DM642 DSP 电路设计 |
| 收稿时间： | 2008-11-19 |
| 修稿时间： | 2009-02-18 |
Implementation of a Multimedia Gathering and Coding System Based on DM642 |
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| WANG Yue-ping,SU Yue-ming,LIU Yun-sheng.Implementation of a Multimedia Gathering and Coding System Based on DM642[J].Computer Engineering & Science,2010,32(2):114-117. | |
| Authors: | WANG Yue-ping SU Yue-ming LIU Yun-sheng |
| Affiliation: | 1.School of Electronic Engineering/a>;Naval University of Engineering/a>;Wuhan 430033/a>;2.Optical Signature of Targets and Environments Key Laboratory of National Defence Science and Technology/a>;Beijing 100854/a>;3.School of Software/a>;Huazhong University of Science and Technology/a>;Wuhan 430074/a>;China |
| Abstract: | This paper proposes a scheme of the hardware design of a four-channel realtime video coder. The paper focuses on the design of the core chips of TMS320DM642 and the audio/video chips. In addition,the storage,Ethernet,IIC and power source modules are discussed. Finally,signal simulation is discussed and some keys of PCB layout and route are proposed. The software test results prove the hardware works well and produces good visual audio/video quality. |
| Keywords: | video coding TMS320DM642 DSP circuit design |
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