公开(公告)号：US3868673A

公开(公告)日：1975-02-25

申请号：US38828673

申请日：1973-08-14

Applicant: TELETYPE CORP

Inventor： MAU JR THEODORE J ,  PETERSON JOHN L

IPC: G06F3/153 ,  G09G1/00 ,  G09G5/00 ,  G09G5/08 ,  G09G5/22 ,  G08B5/36

CPC classification number: G09G1/00 ,  G09G5/08

Abstract: A readout means provides encoded information representing each character to be written on a cathode-ray tube screen as well as five enhancement levels. The output of the readout means is decoded into a video format and fed through a selectively actuated inverter for control of the cathode-ray beam. In response to signals at one of two of the memory enhancement output levels, the intensity of the displayed character is uniformly reduced or caused to pulsate. In response to an underline signal at one of the enhancement levels coinciding with a selected scan line, the inverter is actuated writing a row of dots under a desired character. A cursor signal at one of the enhancement levels actuates the inverter producing a cursor indication upon the screen and a tabulate enhancement signal creates a tabulate mark upon the screen.

Abstract translation: 读出装置提供表示要写在阴极射线管屏幕上的每个字符的编码信息以及五个增强级别。 读出装置的输出被解码为视频格式，并通过选择性驱动的反相器馈送以控制阴极射线束。 响应于两个存储器增强输出电平之一处的信号，所显示的字符的强度被均匀地减小或引起脉动。 响应于与选择的扫描线一致的增强级中的一个的下划线信号，激活逆变器在所需字符下写入一排点。 增强级别之一的光标信号激活逆变器，在屏幕上产生光标指示，并且制表增强信号在屏幕上产生制表标记。