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I have a mitsubishi X-100/XGA (business version of VL-2000) that is around 3 years old. I am wondering if a external scaler like the quadscan would be better than the build in scaler. The scaler chip is from Genesis Microchip and might be the gmZ3. Is there that much a difference? Especially if something like the quadscan also utilizes some Genesis scaling chip?The projector has zoom/image capture/native size, which allows me to freeze a frame/magnify it so that I could examine individual pixels as to how it was derived relative to the native image. I obviously don't see nearest neighbor, but as far as it utilizing superscaling technology, I don't know.
I know the de-interlacing is terrible on projector, with its pixel downshift(or upshift) method of doubling, and no motion adaptive/compensation. Plugging in the DVDO Iscan Pro in between is a big plus, not just on reverse telecine, but also on video source, with its selective bob/weave/blur and scaling de-jaggling low res diagnol lines(VHS source,) which has obvisous pixel jaggles @230 steps/frame, to close to 480steps/frame.Any help would be useful.
Follow Ups:
1. Start readong & posting your question at www.avsforum.com
That is more the spot for this type of stuff- use the Video PRocessors forumI use a Quadscan V2.5 pro
It would be a SUBSTANTIAL SUBSTANTIAL upgrade over the internal processing of your projector.Your 3 year old Mitsu does not have a Genesis chip thatdoes 3:2 pull down.
The Quadscan does.
I have a three week old Sanyo XP21n projector and the Quadscan kills it's internal processing.If you have the $ it would be a worthwhile investment for Quadscan or HTPC, but buy from someplace with a return policy (AVS has $999 Desktop models)
Newer HT oriented projectors may be released later this year (but at $5k+) that will include superior internal scalers I suspect.
dg
I got a DVDO Iscan Pro de-interlacer already, so not concerned about 3/2 pulldown anymore. Am wondering if old Genesis scaler chip in my Mitsu X100 is of relevent quality comparable to the current ones in scalers like the quadscan.
Posted on avsforum already, no reply, any other forum that knows about this stuff?
In order of 3:2 (progressive de-interlacing) performancePoor- Mitsu internal
Better - Quadscan (genesis)
Best- DVDo Pro with Sil503Scaling performance
None- DVDO does not scale, only de-interlaces
BEtter- Mitsu internally takes 480p up to XGA
Best- Quadscan
In order of quality
Poor- mitsubishi with no external device
Better - Mitsu with DVDO de-interlacing to 480p
Best- Quadscan scaling to XGA.You will note that your DVDO probably has better de-interlacing than the Quadscan alone, due to using a better chipset (s503 vs Genesis)
However, the DVDO does not perform SCALING at all, while the Quadscan does (in your case you would scale to XGA).
It is because of the scaling feature that I would recommend the Quadscan over the DVDO.
Does this help?
dg
In order of 3:2 (progressive de-interlacing) performancePoor- Mitsu internal
Better - Quadscan (genesis)
Best- DVDo Pro with Sil503Scaling performance
None- DVDO does not scale, only de-interlaces
BEtter- Mitsu internally takes 480p up to XGA
Best- Quadscan
In order of quality
Poor- mitsubishi with no external device
Better - Mitsu with DVDO de-interlacing to 480p
Best- Quadscan scaling to XGA.You will note that your DVDO probably has better de-interlacing than the Quadscan alone, due to using a better chipset (s503 vs Genesis)
However, the DVDO does not perform SCALING at all, while the Quadscan does (in your case you would scale to XGA).
It is because of the scaling feature that I would recommend the Quadscan over the DVDO.
Does this help?
dg
Is it only assumption? I know the scalers in a few different LCD monitors (IBM 16" Ezio 18") I have are absolutely terrible(it basically does Pixel Stretching(nearest neighbor algorithm I guess.) But are internal scalers on a $12k MSRP projector that bad?
Also, does quadscan do Time Base Correction? Iscan Pro does not, which causes havoc with my projector(or any other LCD monitor I hooked up to.) Getting a TBC VCR (JVC 7800) helped with image skewing, but I get frequent blankouts, from what I don't know. Too much of this trial and error buying is making me tired.
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