一种基于FPGA的LED视频显示系统的设计

介绍了一种基于FPGA的LED视频显示系统的设计方案,详细阐述了系统各模块的工作原理及调试情况,给出了单色LED视频显示系统的实验结果,并对由单色显示屏扩展成彩色显示屏的技术进行了探讨。     

剖析显卡视频输出适配器的原理及应用

本文针对当今市场上流行的显卡接口适配器做了深入的研究和剖析。基于本文绘制的一张显卡视频接口信号对照表,对各种主流显卡适配器的原理和应用展开讨论。清晰直观的将各种显卡接口适配器的原理结构呈现出来。为单卡多屏显示和巨屏显示阵列的搭建和维护提供了理论参考和指导意见。     

机载视频选择和增强模块的设计与实现

现代计算机技术和视频图形图像处理技术的飞速发展,为机载航空电子系统中综合视频信息处理技术的提升创造了良好的契机,系统中需要处理的视频信息量越来越大,格式越来越多。研究能够在机载综合视频处理系统中实现多种视频格式的选择输出和视频图像的增强细化功能。结合系统对视频信号处理的需求,研究了机载视频选择和增强模块的硬件设计和软件算法。在机载综合视频处理系统中实现了视频信号的选择输出功能和视频图像的增强细化功能,满足了机载视频处理系统的要求。     

世界杯射击比赛电视转播技术特点介绍

介绍了广州举办的射击比赛世界杯赛转播中，拍摄，信号制作等方面的特点及转播所采用的方案，详细阐述和分析了遥控摄像机系统，DVI-Master电子鞭系统及切换台电子分屏分区域扣像技术等新技术的采用给转播代来的方便及各种技术的特点。     

Design evaluation of emergency core cooling systems using Axiomatic Design

In designing nuclear power plants (NPPs), the evaluation of safety is one of the important issues. As a measure for evaluating safety, this paper proposes a methodology to examine the design process of emergency core cooling systems (ECCSs) in NPPs using Axiomatic Design (AD). This is particularly important for identifying vulnerabilities and creating solutions. Korean Advanced Power Reactor 1400 MWe (APR1400) adopted the ECCS, which was improved to meet the stronger safety regulations than that of the current Optimized Power Reactor 1000 MWe (OPR1000). To improve the performance and safety of the ECCS, the various design strategies such as independency or redundancy were implemented, and their effectiveness was confirmed by calculating core damage frequency. We suggest an alternative viewpoint of evaluating the deployment of design strategies in terms of AD methodology. AD suggests two design principles and the visualization tools for organizing design process. The important benefit of AD is that it is capable of providing suitable priorities for deploying design strategies. The reverse engineering driven by AD has been able to show that the design process of the ECCS of APR1400 was improved in comparison to that of OPR1000 from the viewpoint of the coordination of design strategies.     

HDMI的技术规范及HD-JPEG显示

高清晰数字电视正在走进普通百姓的家庭，这将引起一场“数字化家庭”的革命。高清晰数字电视的接口技术标准也是整个高清晰数字电视标准的重要部分。日立、松下等7家公司成立了HDMI（High—definition Digital Multimedia Interface，高清晰数字多媒体接口）组织，开始制定新的专用于数字视频膺频传输标准，用于传输未经压缩的数字音视频信号。文中简要介绍了HDMI的技术规范，分析了它与DVI接口相比的优势，讨论了基于HDMI接口的HD-JPEG显示技术。     

Quality-of-service management for multimedia streams with fixed arrival periods and variable frame sizes

Some types of multimedia streams, like compressed video, transmit frames of various sizes at fixed periodic instants. For such variable bit-rate streams, there is a trade-off between the transmission bandwidth reserved (and potentially unused) and the queueing delays observed. Moreover, the calculation of quality-of-service (QOS) guarantees is not trivial. The purpose of this paper is twofold. First, we present a QOS management scheme that maps variable bit-rate streams to a simple, periodic traffic model and thus allows for the estimation of delay bounds. The approach also includes a tuning parameter that explicitly controls the trade-off between reserved bandwidth and delay. Second, the scheme is applied to some real-world scenarios. Its validity is proven and hints for the practical control of the trade-off are derived.     

同步LED系统数据采集与发送模块设计

为了解决同步LED显示控制系统大流量实时数据的采集、接收等[1]问题,将DVI接口技术与高速千兆以太网技术应用到同步LED显示系统数据采集与发送模块设计中,并通过显示系统的帧率、色彩分辨、像素长宽等信息对实际需要的信号带宽给予计算分析,提出以FPGA为系统核心部件、用显卡的DVI接口作为数据源、以高速千兆以太网进行实时...     

基于多媒体网络的请求式测量系统

介绍了通过Internet的请求式测量 (MoD)系统 :允许访问、流式传输已存档的过程数据。客户可以通过访问服务器来接收以媒体流的形式存储的过程数据。MoD服务器和MoD客户之间的交互作用基于适于测量的实时流协议。在接收端 ,利用基于多媒体的分布式虚拟仪器捕获媒体流     

新一代显控设备数字视频接口设计技术

为克服模拟视频显示信息损失、抗干扰能力差等问题,新一代显控设备采用了数字视频接口技术。针对显控设备要求,系统地分析了由发送器、传输链路与接收器组成的数字视频显示系统框架,提出了数字视频显示设计指标要求,并进一步研究了编解码设计与传输链路设计要点。该项技术在新一代显控设备上得到应用,通过仪器测试与实际显示效果,该项技术完全满足实际需求,可以用于指导电子装备数字视频设计。