They generally work in the so-called ISM spectrum industry, science and medical , a bandwidth available for proprietary RF solutions. The advantage of this technology is that it does not require a line of sight between the emitter and the glasses.
The viewers just need to be within the radius of the emitter. Another advantage is that the RF signal is pretty resistant. Alternative visible light sources or IR do not affect it. So it can work along with IR cameras or other light flashes operating other parts of an installation. Even other RF systems generally provide individual channels that allow parallel operations. This system is very well suited for virtual reality VR applications.
Indeed VR systems usually integrate an IR camera system for position tracking. So with RF technology, this tracking and 3D visualization do not interfere and highly complicated inter-application synchronization are a thing of the past. This capacity to make VR installation easier through RF-sync-signals is a key factor of success for Volfoni, a high- end 3D system specialist.
Volfoni has been following these technology trends by offering 3D solutions for each application and technology mentioned above. Synced with the right emitter, they can work to their best depending on the environment there are used in.
Post by cybereality » Fri Dec 10, am. Post by tritosine5G » Fri Dec 10, am. Post by Fredz » Fri Dec 10, pm. Post by cybereality » Sat Dec 11, am. Post by Likay » Sat Dec 11, am. Post by Fredz » Sat Dec 11, am. Post by Likay » Sat Dec 11, pm. Post by Fredz » Sat Dec 11, pm. Post by tritosine5G » Sat Dec 11, pm. Post by cybereality » Sat Dec 11, pm. Post by cybereality » Sun Dec 12, am.
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Post by Fredz » Thu Jan 20, pm. Post by snarfbot » Fri Jan 21, am. Post by billqs » Fri Jan 21, am. Post by tritosine5G » Fri Jan 21, pm. Post by relaxman » Sun Dec 20, am. Post by cybereality » Sun Dec 20, pm.
Post by relaxman » Mon Dec 21, am. Privacy Terms. Skip to content. Quick links. How the hell does DLP-Link keep sync? I've asked people here and also on other forums like AVS and it seems nobody knows the answer.
What is common knowledge is that the DLP display shows an encoded white flash on the screen in order to have the glasses switch eyes. So that part makes sense, in terms of the glasses keeping sync with the refresh rate of the display.
However, it does not explain how the display knows which frame is for the right eye and which is for the left. This would obviously have to come from the content source ie a PC. Another method was blue-line encoding, where the bottom scanline of each image had a blue-line different size for left or right image and thus the display or dongle could tell which eye was which.
However, it does not appear that DLP-Link is using any of these legacy methods. So whats the deal here? How does it work? I would be very interested to hear from any driver developers like the iz3D guys that have played with the hardware and understand how it works. Also, if there were any engineers from TI ideally, since its their spec or from the various manufacturers who have implemented DLP-Link in their products ie Viewsonic, Optoma, etc.
I would love to hear from them too. There has got to be a simple answer to this, but it seems like no one knows what is going on. This is the exact reason why stereo 3d is so daunting to mainstream users and why it remains a niche product. I've been in to 3D for years and I am on this forum religiously and every single day someone makes a post or asks a question that I have to do some serious research just to try to answer. And this DLP-Link sync question has me stumped.
It really shouldn't have to be this complicated. Someone please help. Post by tritosine5G » Wed Dec 08, am I hate this story So , DLP projectors have something called the color wheel. This generates the colors themselves. In theory you should have R G B colors. But the clever techies at TI tought out something else, to maximise the lumens, lets use white segment as well.
What happens to WY white yellow? Easy, dimmed. Can you please be more specific on this? We use AMD's Eyefinity to create a quad buffered Hz output that seems to make the projectors VGA vsync with each other and then by inverting some projectors we make sure the left and right eye DLP link tokens are all the same.
After this sometimes the system works but others times the glasses get confused and we get rainbow colours after a few seconds etc The more projectors the worst it gets. We want to use six. Would there be a way to make the projector work normal but just disable the DLP link signals. We could then do this on five of the projectors and the glasses would only see the signals from one projector. We dont mind opening up the units and doing some tinkering if there's a chip or connection that would control this.
Or maybe covering up part of the colour wheel? We really dont know much about it. DLP Link intended to work with one projector at a time. In DLP Link technique the projector basically insert light pulses to indicate whether it is a right or left frame. When you run multiple DLP enabled projectors it will create problem for the glasses to sync unless all the inserted light pulses very much aligned. One more thing, when you mentioned it works sometime, it could be because you are not moving and standing at a fixed position, you can experiment if it allways failing when you move your head to look at different projectors.
Before disabling DLP Link you can call projector manufacturer to see if it allows highspeed mode i. I'm pretty sure if I disable 3D sync on the projector it doesnt do Hz shows either L or R frame so I guess doesnt support highspeed mode. Will try and contact the manufacturer but I dont like my chances.
Any other ways to disable DLP Link on the electronics side? Check with your projector manufacturer if they can allow Hz passthrough mode. I am currently tasked at my research lab to construct a 6-sided, fully-immersive, VR environment.
I have come into the task after some other people have worked on it. I currently possess six Benq DLP projectors. The projectors have frame sequential and I believe top-bottom 3D projection modes. The screens for the walls already exist and I don't think they are compatible with passive 3D techniques using polarization. My issue is that I don't know if it is possible to sync the projectors together so that the active glasses don't have to adjust when looking between different screens.
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