| 基于数字信号处理器的标准清晰度电视实时传送复用器实现 |
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| 引用本文： | 王金础,方向忠,余松煜. 基于数字信号处理器的标准清晰度电视实时传送复用器实现[J]. 上海交通大学学报, 2000, 34(2): 279-281 |
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| 作者姓名： | 王金础 方向忠 余松煜 |
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| 作者单位： | 上海交通大学,图像通信与信息处理研究所,上海,200030 |
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| 摘 要： | 提出了一种采用数字信号处理器（ＤＳＰ）的标准清晰度电视（ＳＤＴＶ）实时复用器的实现方案。系统以ＴＩ通用定点ＤＳＰ ＴＭＳ３２０Ｃ５０为主处理器，配合少量呵编程逻辑器件（ＰＬＤ），在硬件和软件设计上充分利用ＤＳＰ的特点，实现了将音频、视频和辅助数据实时复用成符合ＭＰＥＧ２系统层传输规范的码流。系统还具有ＲＳ编码功能和Ｅ２接口，具备加扰扩展功能。由于系统规范主要由ＤＳＰ软件实现，因而能通过修改软件以适
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| 关 键 词： | 数字信号处理器 标准清晰度电视 MPEG2 复用器 |
| 文章编号： | 1006-2467(2000)02-0279-03 |
| 修稿时间： | 1999-01-25 |
Implementation of a Real-Time Transport Multiplexer of SDTV Based on DSP |
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| WANG Jin-chu,FANG Xiang-zhong,YU Song-yu. Implementation of a Real-Time Transport Multiplexer of SDTV Based on DSP[J]. Journal of Shanghai Jiaotong University, 2000, 34(2): 279-281 |
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| Authors: | WANG Jin-chu FANG Xiang-zhong YU Song-yu |
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| Abstract: | An implementation of SDTV real time multiplexer using digital signal processor(DSP) was introduced.The system uses the general fix point DSP TMS320C50 of TI as main processor,PLD as coprocessor.Taking advantage of hardware and software designing with DSP,it can multiplex audio,video and auxiliary data according with the MPEG2 transport stream packet layer in real time.The multiplexer can output RS coded stream and has E2 interface.It has extended function of data scrambling.Since it is realized by software of DSP mainly,the system can fit many different situations by modifying software conveniently.Also,the maintainability of this system is good with full on board test circuit. |
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| Keywords: | digital signal processor(DSP) standard definition television(SDTV) digital video broadcasting(DVB) MPEG2 mulitiplexer |
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