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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sat Jun 19, 2010 1:39 pm Post subject: |
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| Nashou66 wrote: | Just came into this thread, Scott send me an E-mail. TV-One has lots of scalers with zoom and shrink functions and on the C2-2250's they others that will do the same .They also have pixel per pixel percentage scaling. I can get you a really good price off retail. let me know.
Any of the C2 or 1T-C2 scalers will do it. the cheapest is the 1T-C2-750
ftp://ftp.tvoneftp.com/SpecSheets/SpecSheet-1T-C2-750-ver1.pdf
it also depends on how many inputs you need. These also have picture overlay. And you can add more scalers in a daisy chain to make them a multi window
display.
Athanasios |
So then the zoom and shrink functions dont change the number of pixels? It would send black pixels, per se?
Last edited by macgyver655 on Sat Jun 19, 2010 1:50 pm; edited 1 time in total
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sat Jun 19, 2010 1:48 pm Post subject: |
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| tse wrote: | It's the "size" feature that I am after. The sync going into the projector needs to be 1080p @ 60 Hz but the image has to be about 76% of the nominal image. So the 1920x1080 image will occupy 1460x820 area of the DLP device. There will be a black border around the scaled down, smaller sized image. The scaler in the projector can do that but it has no grace. Smaller text shows artifacts. I'm looking for a device that will minimize the artifacts while reducing the size of the image. Some video processors/scalers have dedicated sections that do that, no?
Scott |
So you believe the artifacts are caused by the internal scaler and not an anomaly of the DMD panel itself. You used the internal scaler to shrink the projected image to the size you need and have artifacts. So your thinking if you use an external scaler to again shrink the projected image to the size you need you wont have those artifacts? So in the end your using the same image, shrunk to the same projected size, using the same DMD area. Hmmmm, please post the outcome.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sat Jun 19, 2010 2:14 pm Post subject: |
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Oh, by the way Scott. I found those documents I had on just what a DLP device does when you adjust contrast. I'll email you the info when I get a chance. I dont think anyone here would be interested.....
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Sat Jun 19, 2010 3:51 pm Post subject: |
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| macgyver655 wrote: | | tse wrote: | It's the "size" feature that I am after. The sync going into the projector needs to be 1080p @ 60 Hz but the image has to be about 76% of the nominal image. So the 1920x1080 image will occupy 1460x820 area of the DLP device. There will be a black border around the scaled down, smaller sized image. The scaler in the projector can do that but it has no grace. Smaller text shows artifacts. I'm looking for a device that will minimize the artifacts while reducing the size of the image. Some video processors/scalers have dedicated sections that do that, no?
Scott |
So you believe the artifacts are caused by the internal scaler and not an anomaly of the DMD panel itself. You used the internal scaler to shrink the projected image to the size you need and have artifacts. So your thinking if you use an external scaler to again shrink the projected image to the size you need you wont have those artifacts? So in the end your using the same image, shrunk to the same projected size, using the same DMD area. Hmmmm, please post the outcome. |
I realize that it can't come out perfect, you can't cram 4 pixels onto 3 mirrors and not have something wrong. There has been work done on determining the display or not of the sub-pixel results when things aren't native. I don't know how good it is that is why I'm asking. Those guys that spend alot of time typing crap into a computer sometime come up with amazing stuff.
Scott
_________________
"Were we directed from Washington when to sow and when to reap, we would soon want bread."
Thomas Jefferson
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sun Jun 20, 2010 3:50 am Post subject: |
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| tse wrote: | | macgyver655 wrote: | | tse wrote: | It's the "size" feature that I am after. The sync going into the projector needs to be 1080p @ 60 Hz but the image has to be about 76% of the nominal image. So the 1920x1080 image will occupy 1460x820 area of the DLP device. There will be a black border around the scaled down, smaller sized image. The scaler in the projector can do that but it has no grace. Smaller text shows artifacts. I'm looking for a device that will minimize the artifacts while reducing the size of the image. Some video processors/scalers have dedicated sections that do that, no?
Scott |
So you believe the artifacts are caused by the internal scaler and not an anomaly of the DMD panel itself. You used the internal scaler to shrink the projected image to the size you need and have artifacts. So your thinking if you use an external scaler to again shrink the projected image to the size you need you wont have those artifacts? So in the end your using the same image, shrunk to the same projected size, using the same DMD area. Hmmmm, please post the outcome. |
I realize that it can't come out perfect, you can't cram 4 pixels onto 3 mirrors and not have something wrong. There has been work done on determining the display or not of the sub-pixel results when things aren't native. I don't know how good it is that is why I'm asking. Those guys that spend alot of time typing crap into a computer sometime come up with amazing stuff.
Scott |
If I'm thinking what your thinking, if the external scaler can maintain the 1080P resolution in total pixels but reduce the image to the pixels needed for the projected image and the remaining pixels are sent as black pixels then I agree that it may work with much less artifacts. You still have 1 to 1 pixels on the projected image.
The internal scaler was cramming pixels on top of each other to shrink it to the desired projected image and may be what was causing the artifacts.
Just need to know what the external scaler is doing to the shrunken image resolution. That maybe a manufacturers question.
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