论汇编语言显示内存数据的实现问题

在用汇编语言编程时,经常会碰到要求按某种格式来显示内存中数据的问题。通常做法是将要显示的数据转换为ASCII码后,再调用相关的中断来显示。文章论述了在汇编语言程序设计中,常用的几种进制的数据显示问题,并给出了编程实现方案。     

计算机显示器常见故障分析与维修

首先介绍了计算机硬件维修的基本方法和维修的技巧,然后对常见的计算机硬件故障进行了分析,最后提出了显示器的维修实例。     

基于虚拟现实的电子沙盘仿真技术研究

对虚拟现实技术、计算机三维图形技术、OpenGL、立体图像生成与显示技术进行了研究,利用计算机三维图形技术和立体显示技术实现沙盘的三维仿真立体沉浸式展示。     

飞机主系统液压泵转速测试仪的设计与仿真

为给主系统液压泵转速装置的定检提供参考,设计了主系统液压泵转速测试仪。硬件设计包括单片机和液晶显示器四个模块;软件设计包括定时器T0的中断服务、计数器T1的脉冲计数和液晶的驱动三个模块。基于Proteus平台并利用模拟的霍尔脉冲信号对设计进行了仿真,结果表明,测试仪的软硬件设计正确。     

PLC定时计数功能在住宅小区自动控制中的应用研究

以某住宅小区的自动控制为例,利用三菱PLC的定时计数功能组成电子时钟,按预先设定的时段定时启动各控制程序,完成相应的控制功能,取得了很好的效果,对其它自动控制也有一定的借鉴作用。     

PT仪数据采集系统中数据显示和快速导入导出的实现

PT仪数据采集系统涉及到大数据量的采集显示以及大数据量的导入导出。PT仪与上位机采用串口通讯方式。通过设置适当的Mscomm控件属性值,利用定时器实现数据的采集与显示。针对VB控制Excel导入导出数据,常用的方法效率低下,采用数据文件实现快速导出;通过一个具有二维数组性质的变量实现数据快速导入。有效地提高了PT仪数据采集系统的人机交互能力。本设计已运用于采集实验中,效果良好。     

多功能显示模拟器的设计与实现

比较了多功能显示模拟器的三种实现方法,提出了采用周边键实物的总体设计方案,以达到最佳的模拟操作效果;采用了周边键编码电路设计,以减少连接电缆的信号数量;根据显示画面之间的调用关系,分析了画面转换矩阵的构建方法,实现了多功能显示模拟器的显示功能和控制功能.该模拟器可推广使用到其他机型仿真系统中,满足教学和仿真的需要。     

Effect of slow display on detectability when browsing large image datasets

Abstract— In this work, the effect of display temporal characteristics on detectability of signals was studied by comparing detection performance with a slow liquid‐crystal‐display (LCD) monitor and a fast, cathode‐ray‐tube (CRT) monitor when browsing multi‐slice image datasets in stack‐mode presentation. Thirteen readers evaluated 200 image sequence pairs in a two‐alternative forced choice experiment. The image sets consisted of three‐dimensional cluster lumpy backgrounds and were presented to the readers in two display devices: a three‐million‐pixel medical color LCD and a color desktop CRT. For the LCD, many inter‐gray‐level transitions are on the order of 50–60 msec, which was almost twice the frame time. The CRT had 2–5‐msec inter‐gray‐level transitions. The reader study was performed with a graphical‐user interface programmed using direct calls to OpenGL libraries to precisely control the browsing speed. The results were analyzed in terms of the difference in reader performance for each reader and each display, between a browsing speed of 20 and 50 frames per sec (fps). Average reader performance difference between 20 and 50 fps was measured to be 0.049 and 0.156 for the CRT and LCD monitors, respectively. The corresponding drop in reader performance associated with slow display was 0.11.     

LCD motion‐blur estimation using different measurement methods

Abstract— The primary goal of this study was to find a measurement method for motion blur which is easy to carry out and gives results that can be reproduced from one lab to another. This method should be able to also take into account methods for reduction of motion blur such as backlight flashing. Two methods have been compared. The first method uses a high‐speed camera that permits us to directly picture the blurred‐edge profile. The second one exploits the mathematical analysis of the motion‐blur formation to construct the blurred‐edge profile from the temporal step response. Measurement results and method proposals are given and discussed.     

Moving‐picture response time (MPRT) of LCDs for the oblique viewing direction

Abstract— The dynamic performance of displays is an important characteristic for multimedia applications. Motion‐picture response time (MPRT) has been used as an indicator of the dynamic performance of LCDs. This paper describes a comprehensive method of MPRT evaluation for the oblique viewing direction. By using a tilted camera configuration, the angular dependency of MPRT is investigated for the condition that the horizontally scrolling patterns are observed from the vertical direction. For each gray‐to‐gray transition, distinct changes in MPRT and the luminance profile of blur are observed.