detect a signal overlap on a C.R.O

Thread Starter


Joined Feb 15, 2005
how can i know whether a signal has overlapped on other on a C.R.O.

for eg. i want to know whether a circle has overlapped on a semicircle on a C.R.O

actually my circuit will make a circle move continuously on the C.R.O screen . and a user will be moving a semicircle thru his control keys horizontally and can i know when these two touch each other ???


Joined Apr 20, 2004

Without any more deatails than those given, you'll have to rely on the old eyeball.

Electronic methods might include monitoring X/Y deflection voltages to look for similar projections, and even looking at beam current. It changes when passing over a glowing area - that's how the old memory tubes worked.