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RAGEdemon

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Posted on Saturday, November 15, 2003 - 6:27 am:   Edit PostDelete PostView Post/Check IPPrint Post

We all know Ghosting is a major problem, and the main offputting factor to the general consumer. We also know it is caused by the quality of the shutters and phosphorus lag on the CRT.

There is a simple fix for some of the ghosting atleast: let the user adjust the synch signal to a little + or - the frame beng displayed - easily done.

On my projector i have noticed blue light ghosting when it is apparently in synch. Playing about with the buffers, i can make it go in and out of phase synch. Although on synch there is ghosting, going just a little out of phase COMPLETELY eradicates the ghost image, and even makes it sharper and easier to focus on.

I wonder if this would work on a CRT.
All CRT's have different phosphorus decay times, there HAS to be some improvement atleast.
I am surprised the drivers do not have such a feature already, which lets the user adjust the phase of the synch using hotkeys etc.

nVidia dev's, if you are reading this, give it a try, should be easy enough to implement - give us some feedback.

We can also accomplish a lag by putting in an intermediate changeable buffer between the signal emitter, though this will be relatively more complicated.

Share your thoughts

-- RAGEdemon
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Anonymous

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Posted on Friday, November 21, 2003 - 5:51 pm:   Edit PostDelete PostView Post/Check IPPrint Post

Better mail this to nVidia instead of hoping an nVidia developer will read this forum. :)
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Anders Malmgren

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Posted on Friday, November 21, 2003 - 9:49 pm:   Edit PostDelete PostView Post/Check IPPrint Post

I foudn something the other day that was really cool. My father has an old welder in the basement. The welder itself wasnt what made me intrested but the saftey glasses that comes with it. When the welder is off teh glasses is 100% transparent. But when the welder starts the glasses turns black in a millisecond. These glasses hardly let the flame from a welder glow through so they should elimate problems with ghosts on shutter glasses very easy.

I dont know if its wokring pratical, but it is a cool idea..
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Jesper

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Posted on Monday, November 24, 2003 - 12:27 pm:   Edit PostDelete PostView Post/Check IPPrint Post

Do they look cool? :-)
I think the main problem isn't the glasses it's the monitor. If you have a black screen and move the white arrow around you'll see how slow the P. really is.
Skulle vara kul att se din film Anders.
Bye.
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Anders Malmgren

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Posted on Monday, November 24, 2003 - 8:42 pm:   Edit PostDelete PostView Post/Check IPPrint Post

If they look cool? No, not really. :)

Hehe, det är ingetspecielt. Bara en kortfilm, typ 3 minuterlång Matrix kopia. Bara för att testa lite 3d.... Förästen, du råkar inte veta hur man får en X1 projektor att funka med ett bar Wicked3d brillor?

/Anders
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Jesper

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Posted on Tuesday, November 25, 2003 - 2:32 am:   Edit PostDelete PostView Post/Check IPPrint Post

Tyvärr inte.
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Aig

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Posted on Tuesday, December 02, 2003 - 8:33 pm:   Edit PostDelete PostView Post/Check IPPrint Post

À ìîæíî åùå âîò òàê íàïèñàòü. Èíòåðåñíî, ìíîãî íàðîäó ïðî÷èòàåò? ;)
Partial translate: How many people could read this ?...
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RAGEdemon

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Posted on Tuesday, December 02, 2003 - 8:42 pm:   Edit PostDelete PostView Post/Check IPPrint Post

Read, yes. Understand, No :)
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Jesper

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Posted on Tuesday, December 02, 2003 - 9:51 pm:   Edit PostDelete PostView Post/Check IPPrint Post

:-) Sorry guys but there wasn't much newsvalue in our conversation.
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Anonymous

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Posted on Saturday, December 13, 2003 - 12:01 am:   Edit PostDelete PostView Post/Check IPPrint Post

Trust me (anonymously), some NVIDIA people do indeed read this forum.
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TKorho

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Posted on Friday, January 09, 2004 - 11:34 pm:   Edit PostDelete PostView Post/Check IPPrint Post

Anonymous: that would be nice, since it is obviously the main problem, either too long monitor afterglow, incorrect or too slow shutter activation. The last two may be affected by changes into the shutter actication code. Just simple +- slider that affects how early or late the shutter activates.

Yes, I know that for most users it would be too much, but then again for us *in*demand* it would be a gift from heaven. And it would be easy to do, and it would be just one parameter for the stupid users to browse. :)

So how about that! Trying to attack the ghosting once in a while! :D

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