| Author | Message | ||
     Alexander Rating: N/A |
Hi ! I've been doing some research everywhere and I can't seem to find answers to some questions about LCD projectors. If anyone can help, it would really be appreciated  First of all, does LCD projectors have v-sync (like CRTs) ? We all know that a LCD projector can handle anywhere from 60 to 85 frames per second (60-85 Hz) but since there is no cannon like in CRTs, do you consider LCDs to have v-sync ? More importantly, is it possible for an app. to sync with the redraw rate of an LCD ? Finally, suppose I launch a frame on the vsync to an LCD projector. How much time will it take to render on the wall ? The way I see it, since LCD projectors do not trace the image (like CRTs), the image should appear on the wall in one block (no line tracing). If I'm correct, does the image take 1/60 to 1/85 th of a second to be drawn to the wall or is it faster ? As you can see, I'd like to use an LCD to draw frames but in a really timely manner. I'd like to be able to send a frame to the projector and be sure it will be entirely displayed on the wall in 1/60 to 1/85 of a second (thus, I need to use the vsync). Hope everything is clear enough... Thanks for your answers ! Alexander | ||
| itsikw Rating: N/A |
LCD projectors have internal frame converters, that convert the incoming frame rate to approximately 60Hz. The actual display clock is internal, and the user does not have access to it. Regarding image rendering, I am afraid I cannot help. I guess that not all pixels are turned on simultaneously, so there is a certain rendering time. But it surely is much less than 1/60 sec. I know for sure this is the case with DLP projectors. Itsik | ||
| Maddin Rating: N/A |
The best way to have 3D-projection with LCD projectors is to use 2 of them and polarizing the light (thats the way IMAX 3D works). At the moment, I'm planning such a dual-projector using 2 overhead projectors, each equipped with a 14.1" WXGA TFT, having a contrast ratio of 400:1 and a resolution of 1280x800. Due to money shortage, the project should be finished in 2007, even though the total cost should stay under $1000... but I will post here how good it works when I'm finished with the "do-it-yourself"ing ;) | ||
| Peter Ziak Rating: N/A |
Hi, In October I probed LCD projector (Panasonic LCD projector, 1024x768with)with LCD shutterglasses (e-dimensional), max frames freq. 62 Hz, signal from NV 6600 graphcard, 3d drivers 77.77 and works perfectly !!!, little flicker in bright portions of picture is acceptable. (Programs: FS 2004, Farcry, Condor soaring simulator (Goood),N f Speed undreground, Stereoscopic Player (Good). Some LCD projectors have different internal polarisations for basical colors, is impossible use for passive systems. For home use LCD panasonic - rel.good, no color ghosting, better were 1280x720 (16x9 home theater). This is the cheapest way for 3D in Home cinema. | ||
| jass Rating: N/A |
I introduction web http://www.elec-micro.com o Ho ! many link |
