Re: New Vector Monitor Project: LM3886 & overscan

On second thought, There is probably only one correct way to eliminate the
"secondary emission": sample the x&y inputs, and when they go beyond a
setpoint, enable a fast spot killer. Unfortunately, this would add about a
dollar or two to the price of the monitor. It's not clear to me if this is
a good or bad idea.

James

----- Original Message -----
From: Clay Cowgill <ClayC@diamondmm.com>
To: <vectorlist@lists.cc.utexas.edu>
Sent: Monday, November 08, 1999 5:49 PM
Subject: RE: New Vector Monitor Project: LM3886

> > The "flash" you talk about is probably what's called "secondary
emission"
> > and is
> > caused by the beam hitting outside the screen and knocking loose more
> > electrons
> > that then hit the screen and cause an unfocused glow.
> >
> > Is that what you're talking about? (This would be SO much easier if I
> > hadn't
> > sold my games---have to work in the dark).
> >
> Yep,
>
> They're deflecting way off the screen with the color guns on thus
resulting
> in the whole screen "brightening" slightly. (Not huge, but noticeable--
> supposedly it's intentional. ;-) It looks like the background black-level
> coming up maybe 10-20%...
>
> -Clay
>
>
Received on Mon Nov 8 22:44:18 1999