Chapter 13 Computer Graphics 13.2 Video Display devices New Words Expressions: video monitor视频监视器oid- state固态(使用电晶体不用真空管)的 predominant支配的 raster-scan display光栅扫描显示器 frame buffer帧缓冲器 intensity n.强度 piel(orpe)n.像素 resolution n.分辨率 bitmap n.位图 random-scan display随机扫描显示器 vector矢量,向量 hard- copy device硬拷贝设备 pen plotter笔式绘图仪 nat- panel displays平板显示器 rugged粗糙的,要求不高的 Abbreviations crt cathode-ray-tube) 阴极射线管 DⅤST( Direct-View Storage Tube)直视存储管 13-11
Chapter 13 Computer Graphics 计算机专业英语 13-11 New Words & Expressions: video monitor 视频监视器 solid-state 固态(使用电晶体不用真空管)的 predominant支配的 raster-scan display 光栅扫描显示器 frame buffer 帧缓冲器 intensity n. 强度 pixel (or pel) n. 像素 resolution n. 分辨率 bitmap n. 位图 random-scandisplay 随机扫描显示器 vector 矢量，向量 hard-copy device 硬拷贝设备 pen plotter 笔式绘图仪 flat-paneldisplays 平板显示器 rugged 粗糙的，要求不高的 13.2 Video Display Devices Abbreviations : CRT（cathode-ray-tube） 阴极射线管 DVST（Direct-ViewStorage Tube） 直视存储管
Chapter 13 Computer Graphics 13.2 Video Display devices Raster-Scan Displays The most common type of graphics monitor employing a Crt is the raster-scan display, based on television technology I. In a raster-scan system, the electron beam is swept across the screen, one row at a time from top to bottom. as the electron beam moves across each row, the beam intensity is turned on and off to create a pattern ofilluminated spots 光栅扫描显示器 使用CRT的普通图形监视器是基于电视技术的光栅扫描显示器。在光栅 扫描系统中,电子束横向扫描屏幕,一次一行,从顶到底依次进行。当 电子束沿横向逐行移动时,电子束的强度不断变化,从而建立亮点的可 显示模式。 《什第机专出美语 13-12
Chapter 13 Computer Graphics 计算机专业英语 13-12 13.2 Video Display Devices Raster-Scan Displays The most common type of graphics monitor employing a CRT is the raster-scan display, based on television technology [1] . In a raster-scan system, the electron beam is swept across the screen, one row at a time from top to bottom. As the electron beam moves across each row, the beam intensity is turned on and off to create a pattern of illuminated spots. 光栅扫描显示器 使用CRT的普通图形监视器是基于电视技术的光栅扫描显示器。在光栅 扫描系统中，电子束横向扫描屏幕，一次一行，从顶到底依次进行。当 电子束沿横向逐行移动时，电子束的强度不断变化，从而建立亮点的可 显示模式
Chapter 13 Computer Graphics 13.2 Video Display devices Raster-Scan Displays Picture definition is stored in a memory area called the refresh buffer or frame buffer. This memory area holds the intensity values for all the screen points. Stored intensity values are then retrieved from the frame buffer and painted on the screen one row (scan line) at a time. each screen point is referred to as a pixel or pel(shortened forms of picture element). The capability of a raster-scan system to store intensity information for each screen point makes it well suited for the realistic display of scenes containing subtle shading and color patterns. Home television sets and printers are examples of other systems using raster-scan methods。 图形定义保存在称为刷新缓冲器或帧缓冲器的存储器中。该存储器保存 组对应屏幕所有点的强度值。然后再从刷新缓冲器取出存储的强度值, 并在屏幕上逐行(扫描行)画出。每个屏幕点作为一个像素。光栅扫描 系统对于屏幕每一点都有存储强度信息的能力,从而使之较好地适用于 包含细微阴影和彩色模式的场景的逼真显示。家用电视和打印机是另 类使用光栅扫描方式的例子 13-13
Chapter 13 Computer Graphics 计算机专业英语 13-13 13.2 Video Display Devices Raster-Scan Displays Picture definition is stored in a memory area called the refresh buffer or frame buffer. This memory area holds the intensity values for all the screen points. Stored intensity values are then retrieved from the frame buffer and “ painted” on the screen one row (scan line) at a time. Each screen point is referred to as a pixel or pel (shortened forms of picture element). The capability of a raster-scan system to store intensity information for each screen point makes it well suited for the realistic display of scenes containing subtle shading and color patterns. Home television sets and printers are examples of other systems using raster-scan methods. 图形定义保存在称为刷新缓冲器或帧缓冲器的存储器中。该存储器保存 一组对应屏幕所有点的强度值。然后再从刷新缓冲器取出存储的强度值， 并在屏幕上逐行（扫描行）画出。每个屏幕点作为一个像素。光栅扫描 系统对于屏幕每一点都有存储强度信息的能力，从而使之较好地适用于 包含细微阴影和彩色模式的场景的逼真显示。家用电视和打印机是另一 类使用光栅扫描方式的例子