专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US3867703A Sweep generator for linear cathode ray tube display 失效
标题翻译：扫描发生器用于线性阴极射线管显示
公开(公告)号：US3867703A
公开(公告)日：1975-02-18
申请号：US38623773
申请日：1973-08-06
申请人： AMERICAN OPTICAL CORP
发明人： CAVIGELLI GEORGE A
IPC分类号： H03K4/72 , H03K4/10 , H01J29/70
CPC分类号： H03K4/725
摘要： There is disclosed a relatively simple ''''ramp'''' generator for a CRT display which generates the necessary correction current to linearize the sweep across a quasi-flat screen. As in prior art systems, an integrator develops a ramp voltage which is applied to the input of a voltage-to-current converter. However, instead of the input to the integrator being a constant current as in the prior art, the input current is constant only when the yoke current is below a predetermined positive or negative limit. Above the limit, the current at the input of the integrator is inversely proportional to the yoke current. Once the feedback becomes effective in this manner, the yoke current becomes an exponential function of time. By providing double-ended feedback, the yoke current is a symmetrical function of time with respect to its positive and negative portions, and the yoke current exhibits no discontinuities in slope.
摘要翻译：公开了一种用于CRT显示器的相对简单的“斜坡”发生器，其产生必要的校正电流以使跨越准平面屏幕的扫描线性化。与现有技术的系统一样，积分器产生施加到电压 - 电流转换器的输入端的斜坡电压。然而，如现有技术那样，代替积分器的输入为恒定电流，仅当磁轭电流低于预定的正或负极限时，输入电流才是恒定的。高于极限，积分器输入端的电流与磁轭电流成反比。一旦反馈以这种方式生效，磁轭电流就成为时间的指数函数。通过提供双端反馈，轭电流相对于它的正和负部分是对称的时间函数，并且轭电流在斜率上表现出不连续性。

IPRDB

热门服务

关于我们

友情链接

联系方式