BenQ's new motion accelerator technology

xtknight

Elite Member
Oct 15, 2004
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BenQ is premiering their Black Frame Insertion (BFI) technology in the upcoming FP241WZ. This will put a black frame over motion to wipe the eye from the last image. Without this, the eye will remember/mix the previous image with the current one and create the effect of blur. This is true, even with a theoretical "0 ms." LCD. Perfectly smooth motion with LCDs is not far away.

BeHardware article
 

BFG10K

Lifer
Aug 14, 2000
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This could be good as long as it doesn't add extra latency.

Congrats on your Elite status. :thumbsup:
 

OCNewbie

Diamond Member
Jul 18, 2000
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WOOT, sounds exciting. I just recently attempted to hop on the LCD bandwagon and am finding that even with a 5ms response time I'm seeing ghosting, or blur of some sort. I'd LOVE to have an LCD for the lower heat output, weight, power usage, and extra desktop space, but I guess gaming performance supercedes all that for me, so this may just be my ticket to getting an LCD I'm satisfied with, woohoo!
 
Mar 11, 2004
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This particular monitor is shaping up to be really something. I think its got what 2 HDMI ports, DVI, VGA, Component, S-Video, and Composite, and the specs are supposed to be pretty good. So far my only problem has been that it retains BenQ's bezel/stand design which i'm not a fan of personally.

I just hope it doesn't fail to impress in actual usage like their 20" model does.
 

xtknight

Elite Member
Oct 15, 2004
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Samsung's actually looks more interesting to me since it doesn't "flicker" out the whole screen. I hope they do it at a high enough refresh rate to not cause flicker or strobe light effects.

From the sound of the article, they are inserting a black frame for every 2 images in a 60 FPS sequence (image, black, image, black, ...). Samsung's approach seems to be 120 Hz (so 60 actual frames per second with the black ones): http://www.behardware.com/news/8030/cebit-samsung-lcd-mpa-technology.html

But, yes, BFG10K brings up an important point. I think BFI is done by turning off the backlight, not transitioning the pixels, so at least the black screen can be instantaneous. On the other hand, inserting frames between a sequence that's supposed to be 60 Hz may add a delay. I'm just not sure. If you look at the CRT side of things, the phosphors are able to fall very fast (under 1 millisecond according to Tom's Hardware). With that in mind, maybe these black frames are very short. They didn't say anything about them lasting 16.6 ms (1/60 Hz). But they do say "The framerate is still 60 Hz, 60 images per second, but now some of them are black." I'm not sure how to interpret that.

Originally posted by: OCNewbie
WOOT, sounds exciting. I just recently attempted to hop on the LCD bandwagon and am finding that even with a 5ms response time I'm seeing ghosting, or blur of some sort. I'd LOVE to have an LCD for the lower heat output, weight, power usage, and extra desktop space, but I guess gaming performance supercedes all that for me, so this may just be my ticket to getting an LCD I'm satisfied with, woohoo!

"5 ms"? Which LCD specifically? Lots say "5 ms" and still hover at 20 in reality. Try a BenQ FP93GX, Samsung 940BF, or ViewSonic VX922 (all are measured at ~0-7 ms. across the board). Of course you do have to sacrifice color accuracy for the faster speeds.

BFI should help the 8-bit, wide angle screens get to TN speed levels which is a big plus. The best TNs are very close to CRTs now in terms of speed, and this will push them to the finish line. For VA and IPS screens, BFI will help them get to where TNs are now (the speed that many people are happy with), and maybe even beyond that.
 

OCNewbie

Diamond Member
Jul 18, 2000
7,596
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I WAS using the Hanns-G 199DP I believe, near that anyway. 19" Widescreen version 1440x900, most people think it's great, was my first LCD and I was disappointed. Back on my el-cheapo NEC MS95 19" CRT, and I love it =)
 

CaiNaM

Diamond Member
Oct 26, 2000
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Originally posted by: xtknight
BenQ is premiering their Black Frame Insertion (BFI) technology in the upcoming FP241WZ. This will put a black frame over motion to wipe the eye from the last image. Without this, the eye will remember/mix the previous image with the current one and create the effect of blur. This is true, even with a theoretical "0 ms." LCD. Perfectly smooth motion with LCDs is not far away.

BeHardware article

hold your hand in front of your face. now wave it back and forth real fast. blur. that's how we see. ;)