基于FPGA的全彩色LED同步显示屏控制系统的设计
发布时间：2018-09-05 19:14
【摘要】： LED显示屏作为一项高新科技产品正引起人们的高度重视,它以其动态范围广,亮度高,寿命长,工作性能稳定而日渐成为显示媒体中的佼佼者,现已广泛应用于广告、证券、交通、信息发布等各方面,且随着全彩屏显示技术的日益完善,LED显示屏有着广阔的市场前景。 本文主要研究的对象为全彩色LED同步显示屏控制系统,提出了一个系统实现方案,整个系统分三部分组成:DVI解码电路、发送系统以及接收系统。DVI解码模块用于从显卡的DVI口获取视频源数据,经过T.D.M.S.解码恢复出可供LED屏显示的红、绿、蓝共24位像素数据和一些控制信号。发送系统用于将收到的数据流进行缓存,经处理后发送至以太网芯片进行以太网传输。接收系统接收以太网上传来的视频数据流,经过位分离操作后存入SRAM进行缓存,再串行输入至LED显示屏进行扫描显示。然后,从多方面论述了该方案的可行性,仔细推导了LED显示屏各技术参数之间的联系及约束关系。 本课题采用可编程逻辑器件来完成系统功能,可编程逻辑器件具有高集成度、高速度、在线可编程等特点,不仅可以满足高速图像数据处理对速度的要求,而且增加了设计的灵活性,不需修改电路硬件设计,缩短了设计周期,还可以进行在线升级。
[Abstract]:As a high-tech product, LED display screen is attracting great attention. It has been widely used in advertising and securities because of its wide dynamic range, high brightness, long service life and stable working performance. Traffic, information release and so on, and with the development of full color display technology, LED display has a broad market prospect. The main research object of this paper is the full color LED synchronous display screen control system. A system implementation scheme is proposed. The whole system is composed of three parts: DVI decoding circuit. The sending system and the receiving system .DVI decoding module are used to obtain video source data from the DVI port of the video card. Decodes and recovers 24-bit pixel data and some control signals available for LED display. The sending system is used to cache the received data stream and send it to Ethernet chip for Ethernet transmission after processing. The receiving system receives the video data stream from Ethernet, after bit separation operation, it is stored in SRAM for cache, then serially input to the LED display screen for scanning display. Then, the feasibility of the scheme is discussed from many aspects, and the relation and constraint between the technical parameters of LED display screen are deduced carefully. This thesis uses programmable logic device to complete the system function. The programmable logic device has the characteristics of high integration, high speed and on-line programmable, which can not only meet the speed requirement of high speed image data processing, but also meet the requirement of high speed image data processing. Moreover, the flexibility of the design is increased, the circuit hardware design is not modified, the design cycle is shortened, and the on-line upgrade can be carried out.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2008
【分类号】：TN873
本文编号：2225214
[Abstract]:As a high-tech product, LED display screen is attracting great attention. It has been widely used in advertising and securities because of its wide dynamic range, high brightness, long service life and stable working performance. Traffic, information release and so on, and with the development of full color display technology, LED display has a broad market prospect. The main research object of this paper is the full color LED synchronous display screen control system. A system implementation scheme is proposed. The whole system is composed of three parts: DVI decoding circuit. The sending system and the receiving system .DVI decoding module are used to obtain video source data from the DVI port of the video card. Decodes and recovers 24-bit pixel data and some control signals available for LED display. The sending system is used to cache the received data stream and send it to Ethernet chip for Ethernet transmission after processing. The receiving system receives the video data stream from Ethernet, after bit separation operation, it is stored in SRAM for cache, then serially input to the LED display screen for scanning display. Then, the feasibility of the scheme is discussed from many aspects, and the relation and constraint between the technical parameters of LED display screen are deduced carefully. This thesis uses programmable logic device to complete the system function. The programmable logic device has the characteristics of high integration, high speed and on-line programmable, which can not only meet the speed requirement of high speed image data processing, but also meet the requirement of high speed image data processing. Moreover, the flexibility of the design is increased, the circuit hardware design is not modified, the design cycle is shortened, and the on-line upgrade can be carried out.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2008
【分类号】：TN873
【引证文献】
相关期刊论文 前1条
1 林天勇;徐军明;;同步LED系统数据采集与发送模块设计[J];机电工程;2011年02期
相关硕士学位论文 前10条
1 徐绘峰;基于FPGA的LED视频显示屏控制系统的设计[D];武汉科技大学;2010年
2 邱天琦;基于SPWM功能的LED恒流驱动芯片[D];西安电子科技大学;2011年
3 张倩;基于FPGA的高灰度级LED屏控制系统的设计与研究[D];山东师范大学;2011年
4 王浩然;LED双色屏及其控制系统的设计与实现[D];杭州电子科技大学;2011年
5 谈卫星;全彩色LED显示屏系统的设计与实现[D];杭州电子科技大学;2011年
6 陈晓飞;基于PCI总线的同步LED全彩屏系统的研究与设计[D];兰州大学;2011年
7 李瑾;LED大屏幕显示系统的视频信息泄漏研究[D];西安电子科技大学;2011年
8 邓淳苗;基于SOPC的LED显示屏控制系统的研究[D];河北大学;2011年
9 刘九维;基于FPGA的大型户外全彩色LED屏控制系统设计[D];重庆大学;2011年
10 李超然;超高亮LED显示屏的研发[D];东北师范大学;2011年
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