CurtPalme.com Home Theater Forum

David_Web · Joined: 02 May 2007 Posts: 418 Location: Sweden

Could you measure the shutter glasses to see how fast they switch?

A simple LED as a sensor and oscilloscope would work.
And a light source of course.

That would tell us how much margin we have to minimize ghosting.

the_maniac · Joined: 10 Jul 2009 Posts: 111 Location: Austria - Europe

these are those asus glasses
http://cgi.ebay.com/Asus-3D-glasses-/190424973657?pt=PCC_Video_TV_Cards&hash=item2c56368159

they don't look comfortable but i'm gonna try them because they are so cheap for me.

which circuit do you use to extra vsync ?

only found this one http://www.stereo3d.com/vgapt.htm but the circuit page isn't online anymore.

edit: found one version here http://www.int03.co.uk/crema/hardware/stereo/

CIR Engineering · Posted: Mon Sep 27, 2010 4:10 pm Post subject:

CIR Engineering · Posted: Mon Sep 27, 2010 4:11 pm Post subject:

CIR Engineering · Posted: Mon Sep 27, 2010 4:24 pm Post subject:

I have what I think is a lot of good news.

Firstly, I don't think the ghosting is what I thought it was... I brought the SBS video files I have been watching over to a friend's place with one of the new Samsung 3D LCD displays last night. When we played my demo files on his TV they had the same artifacts and ghosting that I have been worried about on the G90 (exact same ghosting). I have seen 3D football, PS3 games, and also Monsters Verses Aliens Bluray playing 3D on his display. With all those retail sources the 3D on his display looks really good. With my files we saw ghosting and a less realistic 3D field of view. So I think a lot of the visual problems I am seeing on the G90 are from the actual crappy video samples I have and not the sync circuit or phosphor Smile

SWEET.

I have also realized that my glasses really stink. I compared them to my friend's Samsung glasses and the Samsung glasses are much more transparent (filter less light) than the ones I am using now. What this means is that my glasses are blocking way more light than better 3D glasses will Smile

So if I get better glasses I should get a brighter image Smile

SWEET.

Also, I realized that my glasses are getting darker and darker the longer they run in one sitting. After about 10 minutes of use they are a lot darker than where they start when you first turn them on. You can also see gradients of darker areas in the glasses after they have been running for several minutes. This causes uneven 3D and also filters even more light. Again, better glasses will get rid of these problems Smile

SWEET.

I also now have 3D Bluray running on the G90 I think... however, I fried my shutter glasses circuit before I got to even look at Bluray on the G90 so I don't even know how good Bluray will look yet Sad

But, I should have the parts to build the better sync extractor late this week or early next so I can evaluate Bluray at that point.

craigr

the_maniac · Joined: 10 Jul 2009 Posts: 111 Location: Austria - Europe

ok do you also have a link for your circuit ?

only new generation glasses i know which have a external controller (and not a TV built in) are those from Nvidia:
http://cgi.ebay.com/NVIDIA-942-10701-0001-000-3D-Vision-Glasses-Extra-/230526967682?pt=LH_DefaultDomain_0&hash=item35ac7a5f82

think they should be state of the art bright

CIR Engineering · Posted: Wed Sep 29, 2010 5:43 am Post subject:

I am tired but happy... so I will post short.

I built a new wireless shutter glasses transmitter system this evening and soldered it directly onto Moome's HDMI board. I installed an alpha Lumagen firmware for CRT 3D. I borrowed a friend's 3D bluray player along with his copy of 3D Monsters Versus Aliens.

All I can say is HELL YEAH!!! Freaking amazing looking. No ghosting at all and the image is very sharp. Pretty bright too even with my low end glasses. Looks at least as good as the 3D LED panels and is 110" diagonal.

There are huge issues with the Lumagen firmware, but it can run real 3D bluray on my G90 and it is looking fantastic when it does. The processor falls out of sync every five minutes or so resulting in me having a seizure and then necessitating a Radiance power cycle after I regain consciousness Shocked

There are also a lot of other issues, but when it works it looks fantastic. I will call Lumagen tomorrow to go over what I saw and hopefully get Patrick to fix a few things for me.

Tomorrow I am going to ask my buddy if I can borrow a set of his Samsung shutter glasses. Those are really nice and I think I have a protocol to drive them with the transmitter I built this evening.

Smile

craigr

CIR Engineering · Posted: Wed Sep 29, 2010 5:53 am Post subject:

CIR Engineering · Posted: Wed Sep 29, 2010 6:01 am Post subject:

cinema mad · Joined: 25 Nov 2009 Posts: 219

Wow sounds like its all starting to come together Craig, Its good to here that Lumagen are right with
you on this..

huggy · Posted: Wed Sep 29, 2010 7:24 am Post subject:

Craig

Sounds awesome Thumbs Up

Now for the 3D noobs like myself,what would I need to display 3d on my Barco 1209s?
I'm running an HTPC for source BTW.

Dave

the_maniac · Joined: 10 Jul 2009 Posts: 111 Location: Austria - Europe

which wireless technology are you using for your glasses, infrared ?

i guess my glasses ned supply voltage and a simple ttl signal (vsync).
so you would call them smart, right ?

how did you got or will you get the protocol modern wireless glasses are using ?
thought that it would be very difficult to drive them.

evgen_ln · Joined: 29 Sep 2010 Posts: 2 Location: Ukrane

CIR Engineering · Posted: Wed Sep 29, 2010 3:02 pm Post subject:

CIR Engineering · Posted: Wed Sep 29, 2010 3:14 pm Post subject:

CIR Engineering · Posted: Wed Sep 29, 2010 3:19 pm Post subject:

CIR Engineering · Posted: Wed Sep 29, 2010 3:26 pm Post subject:

CIR Engineering · Posted: Wed Sep 29, 2010 3:28 pm Post subject:

evgen_ln · Joined: 29 Sep 2010 Posts: 2 Location: Ukrane

macgyver655 · Joined: 22 Aug 2007 Posts: 8508