基于H.264的无线远程LED全彩屏控制系统
发布时间：2019-02-14 18:25
【摘要】： LED全彩显示屏应用发展迅速。在国内城市中越来越多的广场屏，广告屏被应用。国外LED全彩屏市场同样发展迅猛。目前的LED显示屏一般把设计好的图像储存在系统硬件(如Flash或Rom)里，或者利用计算机现场输入信号实现视频功能，存在灵活性不高的弊端。此外，多数系统均采用RGB信号或者电视制式信号直接用传输，这严重影响了传输速率且增大了显示屏图像处理的信号量。 本论文旨在通过设计先进的新型LED全彩显示屏控制系统，实现技术创新的目标，达到设计出自主知识产权的先进LED全彩屏控制系统的目的。主要工作如下： (1)利用最新的视频压缩算法H.264标准对视频进行压缩。借助H.264对流媒体的高压缩率，减少了数据传输量，实现高质量的图像传输。压缩后适应无线网络现有网络带宽限制，实现无线网络传输。 (2)引入了Internet与现有GPRS(EDGE)网络技术实现无线网络传输。增加了LED显示屏布置的灵活性。利用无线网络降低了架设施工的成本。采用Internet体系结构便于升级IPv6网络传输与未来3G技术相结合，具有很强的技术前瞻性和先进性。 (3)设计了用户视频平台和网络登录服务器系统，进行远程LED视频显示服务。通过服务器连接终端屏，用户可以同时连接几块屏，实现一机多控。 (4)使用了最先进的流媒体视频DSP解决方案——TI公司的Davinci图像处理技术。Davinci技术芯片TDS320DM6446提供了ARM和DSP双内核。通过嵌入式系统的应用和DSP图像处理技术，很好的解决了本系统从H.264编码到无线网络传输的技术难题，，设计了具有国际技术先进水平的系统。
[Abstract]:LED full color display is developing rapidly. In the domestic city more and more square screen, advertisement screen is used. Foreign LED full color screen market also develops rapidly. At present, the LED display usually stores the designed image in the system hardware (such as Flash or Rom), or uses the computer field input signal to realize the video function, which has the disadvantage of low flexibility. In addition, most systems use RGB signal or TV signal to transmit directly, which seriously affects the transmission rate and increases the signal quantity of display screen image processing. The purpose of this paper is to achieve the goal of technological innovation through the design of advanced LED full-color display control system, and to design the advanced LED full-color display control system with independent intellectual property rights. The main work is as follows: (1) Video compression algorithm H. 264 is used to compress video. With the help of H. 264, the high compression ratio of streaming media can reduce the amount of data transmission and achieve high quality image transmission. After compression, it adapts to the existing network bandwidth limitation and realizes wireless network transmission. (2) introduce Internet and existing GPRS (EDGE) network technology to realize wireless network transmission. Increased flexibility in LED display layout. The cost of erection construction is reduced by using wireless network. It is convenient to upgrade IPv6 network transmission with 3G technology in the future by using Internet architecture. It has strong technical foresight and advanced nature. (3) user video platform and network login server system are designed to provide remote LED video display service. Through the server connection terminal screen, the user can connect several screens at the same time, realize a machine multi-control. (4) using the most advanced DSP solution of streaming media video, the Davinci image processing technology of TI Company. The Davinci chip TDS320DM6446 provides ARM and DSP dual cores. Through the application of embedded system and DSP image processing technology, this system solves the technical problem from H.264 coding to wireless network transmission, and designs a system with advanced international technology.
【学位授予单位】：华南师范大学
【学位级别】：硕士
【学位授予年份】：2007
【分类号】：TN141
本文编号：2422470
[Abstract]:LED full color display is developing rapidly. In the domestic city more and more square screen, advertisement screen is used. Foreign LED full color screen market also develops rapidly. At present, the LED display usually stores the designed image in the system hardware (such as Flash or Rom), or uses the computer field input signal to realize the video function, which has the disadvantage of low flexibility. In addition, most systems use RGB signal or TV signal to transmit directly, which seriously affects the transmission rate and increases the signal quantity of display screen image processing. The purpose of this paper is to achieve the goal of technological innovation through the design of advanced LED full-color display control system, and to design the advanced LED full-color display control system with independent intellectual property rights. The main work is as follows: (1) Video compression algorithm H. 264 is used to compress video. With the help of H. 264, the high compression ratio of streaming media can reduce the amount of data transmission and achieve high quality image transmission. After compression, it adapts to the existing network bandwidth limitation and realizes wireless network transmission. (2) introduce Internet and existing GPRS (EDGE) network technology to realize wireless network transmission. Increased flexibility in LED display layout. The cost of erection construction is reduced by using wireless network. It is convenient to upgrade IPv6 network transmission with 3G technology in the future by using Internet architecture. It has strong technical foresight and advanced nature. (3) user video platform and network login server system are designed to provide remote LED video display service. Through the server connection terminal screen, the user can connect several screens at the same time, realize a machine multi-control. (4) using the most advanced DSP solution of streaming media video, the Davinci image processing technology of TI Company. The Davinci chip TDS320DM6446 provides ARM and DSP dual cores. Through the application of embedded system and DSP image processing technology, this system solves the technical problem from H.264 coding to wireless network transmission, and designs a system with advanced international technology.
【学位授予单位】：华南师范大学
【学位级别】：硕士
【学位授予年份】：2007
【分类号】：TN141
【参考文献】
相关硕士学位论文 前4条
1 马宏平;LED显示屏的计算机远程控制系统[D];重庆大学;2002年
2 张华;基于ARM的大屏幕LED显示系统的设计研究[D];四川大学;2004年
3 张叔猛;嵌入式系统和FPGA在LED显示屏中的应用研究与实现[D];武汉理工大学;2005年
4 陈小鹏;GPRS在LED显示系统上的应用[D];上海海事大学;2004年
本文编号：2422470
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