【作者】 余小平；

【导师】 汪林邦； 奚大顺；

【作者基本信息】 成都理工大学 ， 测试计量技术及仪器， 2002， 硕士

【摘要】 本课题是高速无线视频传输系统项目的一个子课题，属于信源压缩编码和信宿解压缩解码部分，主要任务就是运用DSP技术及相关的ASIC器件实现实时的运动图像压缩编解码。 高速无线视频传输系统是信息产业发展至今最急需的设备之一，其市场需求量极大，尤其在交通、金融、公安、消防、减灾、救灾、远程医疗、军事装备、石油、矿山等部门应用最多。运动图像实时压缩编码和解压缩解码是高速无线视频传输系统的核心部分。 数字信号处理器(即可编程DSP芯片)，作为快速和实时处理的最重要的载体之一，正受到科学技术界和工程界的广泛关注。数字图像、声音等多媒体压缩技术再次成为信息学科领域内的研究热点之一。如何把DSP的强大的数据处理能力和先进高效的图像压缩技术结合起来，开发出市场所能接受的实用的无线视频传输系统是当前的一个应用热点。 本文介绍了一种实现脱机视频压缩编码和解压缩解码及视频数据可靠通信的方法，详细论述了作为高速无线视频传输系统核心部分的运动图像实时压缩编码和解压缩解码的软硬件设计和研制开发过程。 主要涉及以下几个方面的内容： 1．介绍了ANALOG DEVICES公司的DSP处理器——ADSP2181的硬件结构，DSP资源分配技术，外围器件接口设计技术，以及软件编程和调试技术。 2．介绍了新一代视频编解码芯片ADV611的工作原理和接口电路设计。 3．介绍了可编程视频输入编码芯片SAA7111和可编程视频解码输出芯片SAA7185工作原理和接口电路设计。 4．开发了实时运动图像视频压缩编码和解压缩解码系统，实现了脱机视频压缩编码和解压缩解码系统的实时图像处理和数据流量的自适应控制。更多还原

【Abstract】 This project is one of the subprojects of high-speed wireless video transmission system. Using DSP technology and relevant ASIC device to realize motion picture’s compress code and decompress decode in real time is its main task.The high-speed wireless video transmission system is one of the equipment needed badly most in development of information industry so far. Its market demand is great, and be used most especially in the departments, such as traffic, finance, public security, fire control, reducing natural disasters, disaster relief, tele-medicine, military equipment, petroleum, mine, etc.. Motion picture’s compress code and decompress decode in real time is the key part of highspeed wireless video transmission system.Nowadays, the scientific and technical circle and engineering circle pay more attention to Digital Signal Processor (programmable DSP chip), the one of the most important fields of realtime signal processing. The compress technology of multimedia, such as digital picture, sound, etc., has become one of the research focuses in the discipline domain of information again. How to combine advanced and high-efficient picture compress technology with the strong data processing ability of DSP to develop the practical wireless video transmission system, which the market can accept, is one of the current application hot points.This paper introduces a method to realize stand-alone video data’s compress code and decompress decode and reliable transmission of video data, and expounds the design processing and hardware and software development.The main points of the paper are as follows:1. Introduces the hardware structures of ADSP2181 of AD Inc., DSP resource allocation, peripheral device interface’s designing, programming and debugging.2. Introduces operation principle and interface circuit design of video CODEC ADV611.3. Introduces operation principle and interface circuit design of Video Input Processor SAA7111 and Video Output Processor SAA7185.4. Designs and develops stand-alone video data’s compress code and decompress decode system. Realizes motion picture’s compress code and decompress decode in real time, and self-adaptation control of data flow.更多还原