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Path: utzoo!linus!decvax!tektronix!uw-beaver!microsoft!fluke!kurt
From: kurt@fluke.UUCP (Kurt Guntheroth)
Newsgroups: net.micro.cbm
Subject: Re: C64 Ghosts and Audio Input
Message-ID: <644@vax2.UUCP>
Date: Fri, 12-Aug-83 15:13:12 EDT
Article-I.D.: vax2.644
Posted: Fri Aug 12 15:13:12 1983
Date-Received: Sat, 13-Aug-83 20:37:58 EDT
References: <355@mhtsa.UUCP>
Organization: John Fluke Mfg. Co., Everett, Wash
Lines: 21

There is a problem that occurs when you change from one color to another
using inexpensive video hardware and inexpensive video generating 
hardware.  A hardware person explained it to me at one time and even gave
a name for the problem, but I have forgotten all that.

Basically, some colors, or more particularly, the transitions between some
colors and other colors causes smearing.  It is a linearity problem in
video amplifiers and color video generating circuits and cannot be cured
easily without spending a lot of money.

I have a color monitor and I get smearing.  You can reduce the smearing by
getting a better monitor but it wont go away altogether.  On the commodore
64 and the commodore monitor, you can decrease the smearing by connecting
the luminance output.  (The cable that comes with the commodore monitor does
not have a luminance connection, they want you to pay $25 extra to get it.
Disgusting) I bet you don't have ghosts when you use red over black.

Anyway, this is not the 'sparkle' problem.  The sparkle problem looks like
your TV set looks when you turn on a vacuum cleaner or blow drier nearby.
Strange snow in the picture.