公开(公告)号：US5357286A

公开(公告)日：1994-10-18

申请号：US936307

申请日：1992-08-28

申请人： Duk-won Hwang

发明人： Duk-won Hwang

IPC分类号： H04N7/08 ,  H04N7/081 ,  H04N9/00 ,  H04N9/74

CPC分类号： H04N5/2621 ,  H04N9/74

摘要： An on-screen information superimposing circuit including an A/D converter for converting color signals and a luminance signal output from a video signal source into digital signals, an on-screen information generator for detecting on-screen information signal made of the color signals according to the luminance signal output from the A/D converter, storing the on-screen information, and outputting the stored color signals according to a read control signal, and a D/A converter for converting the on-screen information output from the on-screen information generator into an analog signal so as to be superimposed on another signal output from the video signal source, so as to reproduce the color signal of the on-screen information using the original color signal.

摘要翻译： 一种屏幕信息叠加电路，包括用于将彩色信号和从视频信号源输出的亮度信号转换为数字信号的A / D转换器，用于检测由彩色信号产生的屏上信息信号的屏幕上信息产生器， 涉及从A / D转换器输出的亮度信号，存储屏幕信息，并根据读取的控制信号输出所存储的彩色信号;以及D / A转换器，用于转换从ON / 屏幕信息发生器转换为模拟信号，以便叠加在从视频信号源输出的另一个信号上，以便使用原始颜色信号再现屏上信息的颜色信号。