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 Post subject: Acer H9500BD 1080p 3d with dvi dl
PostPosted: 04 Nov 2011, 02:36 

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Sounds like it may be a winner. Anyone hear about it.


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 Post subject: Re: Acer H9500BD 1080p 3d with dvi dl
PostPosted: 04 Nov 2011, 09:57 
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It looks good specs wise, 1080p native resolution, 3D support over HDMI 1.4 and DLP Link glasses.


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 Post subject: Re: Acer H9500BD 1080p 3d with dvi dl
PostPosted: 23 Nov 2011, 01:26 

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How do these 1080p displays work for refresh rates. I know movies are typically 24hz, but that doesnt mean that glasses have to be shuttering at that hz. Do the glasses remain at 120hz shutter when viewing a movie that has only 24fps?


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 Post subject: Re: Acer H9500BD 1080p 3d with dvi dl
PostPosted: 23 Nov 2011, 10:53 
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For example a single frame from stays displayed longer and the glasses open/close shutters multiple times on the same frame...


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 Post subject: Re: Acer H9500BD 1080p 3d with dvi dl
PostPosted: 23 Nov 2011, 19:18 

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So for this acer display, what is the max refresh it can do at 1080p? I am not interested in gaming really, just stills and video, which is content at low refresh rates. For a still image, there really is no refresh for the source, so what frequency could the shutter glasses be at? Is that going to be 120hz or does this pj max out at 60hz or 48hz?


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 Post subject: Re: Acer H9500BD 1080p 3d with dvi dl
PostPosted: 23 Nov 2011, 20:03 
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Since the projector uses HDMI interface the only 3D mode that HDMI 1.4 supports in 1080p is with 24Hz per eye.


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 Post subject: Re: Acer H9500BD 1080p 3d with dvi dl
PostPosted: 23 Nov 2011, 22:04 

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ouch. Thats a deal breaker for me. It seems like all they need to do is buffer the image and they could run at any shutter speed regardless of the input. It doesnt sound too hard to solve, but who knows. I have seen the hdtvs at bestbuy and they suck at the low refresh rates, its like a strobe. I guess that means I need to wait for hdmi 1.4b or dual link dvi or something. Given the speed of advance for all these technologies, it probably wont be too long, fingers crossed.


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 Post subject: Re: Acer H9500BD 1080p 3d with dvi dl
PostPosted: 23 Nov 2011, 23:54 
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The fact that the projector has 1080p native resolution and a DVI port got confused a lot of people, but the DVI port on it is not capable of running 1080p at 120Hz refresh rate, so you are limited to maximum 1080p 24Hz 3D mode over the HDMI.


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 Post subject: Re: Acer H9500BD 1080p 3d with dvi dl
PostPosted: 25 Nov 2011, 23:35 

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So, now I am wondering, what projectors are trying frame interpolation or something like that in 3d at 1080p. For 2d, just about every display is going with some motion interp to 120hz, 240hz or more. I think some projectors do this too, it seems like a no brainer, there is no reason to take a 24hz movie and shutter it at 24hz. At a minimum you could shutter it at 48hz just to make sure each eye gets a shot at a frame. With all the frame interp going on, there must be a PJ that does this too to make the shuttering at 120hz regardless of the framerate going in.

This PJ does frame interp with "acumotion" , so it makes me wonder if they even try to do that with the 3d stuff. No doubt, the input is not relevant to the shutter speed. Something like this has to be able to solve the slow shutter issue way before any new hdmi standard is agreed on. For every except gaming, this is a perfect way to solve the shutter issue.


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