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. So what is a DLP 3D printer?
Its technology centres around vat polymerisation, where a liquid photopolymer resin is used and solidified when exposed to light. While both technologies have their own differences in regard to resolutions, build, volume, speed, accuracy and workflow, the main difference between SLA and DLP lies in the light source. DLP 3D printers utilise a digital projector screen to first display an image of a layer across the built-in platform and then cure all points. Considering the fact that a digital screen is being used, every image of the layers is made up of square pixels.
The end result one can expect is a 3D layer, that is from from tiny rectangular cubes called voxels. This makes it convenient to install and easy to provide a 3D signal to the 3D glasses of the audience. The advantage of this technology is a very stable and strong signal that allows to cover large audiences.
Depending on the installation you may add additional emitters to maintain a strong enough signal reaching all viewers. The disadvantage of this technology is that it requires a direct line of sight between the emitter and the glasses. This might be easy to achieve in auditoriums, but is more difficult in interactive VR installations where the user moves and might actually be the obstacle between the sync source and the glasses.
In these constellations multiple emitters from different directions, can be the solution. Finally the IR signal may also be disturbed by other light sources that glasses IR receptors might be misreading for 3D signals. In controlled environments that can be protected from these light sources, the IR technology has been widely adopted, as for example in cinemas, museums or corporate presentations.
It also works with a specific emitter that connects to the projector. While many current 3D projectors are displaying actual video frames at 60 times each second for each eye total frames of video per second , the transition time can vary considerably between projector manufacturers and models.
Some projectors, such as the Sony SXRD projectors , use display chips with a Hz update rate where every other frame i. The point of the above discussion it to point out that the timing of the 3D active shutter glasses switching each lens between open and closed states must be different for use with different brands of projectors i.
All 3D active shutter glasses must receive timing information from an external source, usually the projector, so that the operation of the shutter lenses can be correctly synchronized with the information being projected. Currently there are three fundamentally different techniques for delivering the synchronizing information to the glasses. Each of the above three approaches has its strengths and weaknesses when it comes to reliably getting the 3D synchronizing signal to each and every viewer in the home theater that is wearing the appropriate 3D active shutter glasses.
The three most common questions being asked by 3D TV owners, or potential owners, on the various web forums are:. Why is there not a standard for 3D active shutter glasses for use with all 3D TVs? Also be aware that if your 3D projector puts out a polarized light some LCoS models currently do this and if you use a projection screen that retains a significant amount of that polarization, then using 3D active shutter glasses whose 1 st polarizing element has the opposite polarization orientation from that of the projected image, then a loss of light will result.
This will be discussed in more detail in a future blog on things to consider when selecting a screen for 3D projection. There are industry activities underway attempting to create a standards for 3D active shutter glasses.
However, there is more than one group trying to do this with each taking different approaches or addressing different aspects of the requirements. Some projector manufacturers have created a 3D operating mode that increases the light output from the projector, but this generally produces a less accurate, but brighter image.
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