| Author | Message | ||
     Tim Burke Rating: N/A |
Hello, I have an Infocus LP290 and I want to get my MSI glasses to work perfectly. The specifications on the Infocus web site state that the projector has a horizontal refresh or scan rate of 15 to 100 kHz but I can't get the glasses to sync perfectly at any of the plug & play refresh settings, 50, 60, 70, 72, 75, 100, 120, 640x480, 800x600, 1024x768, etc. I’m sure the range is custom one similar to an LCD TV and isn't listed. So far the best setting I can find is 70 kHz at 2% displacement, enough to tell it is in 3D on a 6x8 foot screen with no discoloration and very little ghosting due to my screen paint. When I put the displacement at about 5% the foreground images look stunning but the further an object is back, the more it jumps to the right, at about 1 jump per 2 seconds. I've randomly picked a 1024x768 LCD monitor driver instead of the default plug & play driver for the projector but I didn't know which would be closest to the 3xLCD's in the LP290. Last night I connected my DVI/O through way of the VGA adapter provided with my nVidia card to my MSI Stereo2 PCI card using the latest available same version Forceware and Stereo drivers. I then connected the projector directly to the Stereo2 PCI card. I've been playing with the advanced timing settings but still can't correct the problem. Recently I've noticed that I can see the jumping even without the glasses so now I concluded perhaps the problem has to do with the 3D plane coding not the sync on the projector but I can see 3D fine when my monitor is connected directly the same way; however, there is no way to stop XP from automatically detecting which is connected, my monitor or projector. My next step is to connect the monitor to the VGA out on the projector to see if I have the same problem on the monitor when I display in 3D but I imagine the h-sync doesn't get passed directly to the output VGA from the projector, it probably just splits the signal 2 ways. For example, when you pass a 240 kHz signal to my projector it works so I know it is converting the signal to something compatible with the LCD’s in the 15-100 kHz range I just don’t know what. If I'm lucky, the VGA out will display at the same refresh as the projector and I can get the horizontal sync settings by displaying them with my on-monitor menu. I’ll also try switching the monitor and projector out while displaying a stereo image and possibly connecting the output from the projector as the input to the PCI stereo card then the monitor just to see what happens. I’ve read that someone in here has an LP70. It has almost the exact same specs as my LP290 and the X1, X1a, X2, X3 appear to have only minor differences from mine so I don’t see why the LP290 won’t work as well especially since it does work perfectly if you just blink right when it jumps. (LOL) I don’t know if I should direct questions to nVidia but Infocus gave me no response to my email a month ago. What I really need to know is what the terms front porch, back porch, and sync width mean when using the advanced timing settings under nVidia or Powerstrip? Could incorrect timing settings cause the gradually increased rightward jumping proportional to the distance of the objects or is it a 3D stereo driver problem that strangely only occurs when the projector is connected in place of the monitor? Would purchasing the eDimensional dongle & glasses or a different DVI toVGA adapter possibly solve the problem? Does anyone have any information on the exact horizontal refresh rates for the LP280/LP290 at 640x480, 800x600, or 1024x768 or know where to find custom XP drivers so I don’t have to use generic plug & play windows ones? | ||
| Peter Wimmer Rating: N/A |
The Infocus LP290 is a LCD projector. I've never seen any LCD projector which can do pageflipping beyond 60 Hz. The reason is that the projector converts any input signal to 60 Hz. When the spec says it supports up to 100 Hz, it just means that it will accept the signal, not that it will work at up to 100 Hz internally. |
