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DLP
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29. September 2006 @ 16:37 |
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Created by Texas Instruments and now being used in HDTV's
from what I was told a fellow employer in Best Buy told me that DLP's are great for gaming.Is it true?
>:(
Snake-"Metal Gear?"
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diabolos
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29. September 2006 @ 20:05 |
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Sure. DLP is good for just about everything except of center viewing.
:)
Ced
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Chevyboy2
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5. October 2006 @ 08:43 |
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whats that supposed to mean? can you elaborate on that. center viewing? am i missing somthing here?
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5. October 2006 @ 13:54 |
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I dont know what he meant but Im still sticking with DLP, most DLP's I seen are from Samsung. But yeah DLP is kinda cool when I was looking at it on bestbuy it looked crispier and the games looked nice on it.
>:(
Snake-"Metal Gear?"
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diabolos
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6. October 2006 @ 06:41 |
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@ DVD7227,
I ment exactly what I said. Sorry for sounding sarcastic but your orignal post through me off.
@ (everybody)
The Viewing angle of a TV is the measure of at what angle the picture starts to degrade (get dark, drop detail, lose color fidelity, ect...).
I'm not sure what this generations of DLPs Viewing angles are but for reference...
- Flat-screen Direct-View CRTs and Plasmas has a 170-180 degree viewing angle (meaning the picture looks good from all side and angles between 0 and 180 degrees or 0 and 90 degrees). No light focusing needed.
- New model LCDs have a 140-160 degree viewing angle. Some light focusing used at the pixel level.
- Rear projection TVs have a 130-140 degree viewing angle. Most of the light though is lense focused in the middle so that at normal viewing position (i.e. a couch) it is possible to see a good picture at about 45 degrees off center. But standing up of sitting on the floor at angles below normal viewing position can vary between exceptable and horrible.
Again I'm sorry for sounding sarcastic,
Ced
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AfterDawn Addict
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6. October 2006 @ 08:30 |
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I've seen a 54" DLP screen TV, it wipes the floor with plasma or LCD, viewing angles are far, far superior. Less maintenance too.....plasma are notorious for having a short lifespan (5 or so years)
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gerry1
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6. October 2006 @ 11:54 |
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Is that still true Pulsar or have they fixed that? Some sort of gas problems in the oldies (so they say) but I was told that wasn't true anymore about plasmas.
Also with the darks on rear projection ... use to be true (or is true with the cheapies) but I've got an sony LCD rear projection and the pic is awesome...no problem with dark colors or the pic appearing dim in a bright room though it was their top of the line. Ced is right about viewing angle though great in the center or center right/left but a little too far and it sucks. Fortunately, I live alone.
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AfterDawn Addict
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6. October 2006 @ 12:13 |
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Not sure about the plasmas, one good thing about DLPs is that it is impossible to get screen burn, as the colours are not generated, they are also truer colours than CRTs & the rest.
I just don't trust plasma at the mo', the resolution on DLPs is infinitely better than any of the rest on offer. I am just very keen on the sheer simplicity of the DLP technology, streets ahead of the rest in my opinion.
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mackdl
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7. October 2006 @ 05:43 |
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The DLPs are very nice, but like others there are pros and cons. The bulbs have a limited lifetime and have to be replaced. The normal expectancy is 20,000 hours depending on your settings. From what I heard the cost ranges from $200 and up. One would have to factor in how many hours is your television on per day/year. What happens when they no longer make the bulb for that particular model? Or does one fits all? I have a really nice Energizer flashlight that will be in the garbage once the bulb burns out, because I can no longer find that particular bulb. I even emailed Energizer, all I got was sorry.
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diabolos
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8. October 2006 @ 13:14 |
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Quote:
The DLPs are very nice, but like others there are pros and cons. The bulbs have a limited lifetime and have to be replaced. The normal expectancy is 20,000 hours depending on your settings.
For a DLP bulb? Bubls in rear-projectors last for about 8,000 hours (half-life 4,000 hours).
Quote:
plasma are notorious for having a short lifespan (5 or so years)
Plasmas last for 60,000 hours or longer. Thats over 30 years if you watch tv 5 hours a day.
Quote:
they are also truer colours than CRTs & the rest.
Only the best of these newer technologies (LCD, DLP, LCoS, and Plasma) can get close to the color accuracy of a properly calibrated CRT (direct view of projection). The CRT technology isn't inferior to any of these technologies in terms of picture quality.
The only techonogy that has come close to matching (and mabye exceeding) the CRT in contrast ratio and color accuracy is the SED technology which won't be available till 2008.
Ced
This message has been edited since posting. Last time this message was edited on 8. October 2006 @ 13:18
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AfterDawn Addict
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8. October 2006 @ 14:04 |
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Did a quick google on plasmas,
http://www.practical-home-theater-guide.com/plasma-tv-faqs.html
I stand corrected. As for the CRT & colours, I do not know what I was thinking! Of course CRTs are better. I was probably having a senior moment...
Sorry for the misinformation & general stupidness of my post. I will leave it there for posterity....
I still prefer DLP to plasma.
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This message has been edited since posting. Last time this message was edited on 8. October 2006 @ 14:08
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mackdl
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8. October 2006 @ 17:21 |
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Largarto_
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10. October 2006 @ 16:25 |
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"Plasmas last for 60,000 hours or longer. Thats over 30 years if you watch tv 5 hours a day."
Yeah but, they're estimating......or maybe someone sat 24 hours a day for 7 years to check it out? Wait....have plasmas even been out 7 years?
hmmmmm...
?We are all actors portraying ourselves, to other actors portraying themselves?
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10. October 2006 @ 19:09 |
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I read on a wikipedia article describing my answer
Quote:
Response time in video games may be affected by upscaling lag. While all HDTVs have some lag when upscaling lower resolution input to their native resolution, DLPs are commonly reported to have noticably longer delays. Newer consoles such as the Xbox 360 and Playstation 3 do not have this problem as long as they are connected with HD-capable cables. [1] (Samsung's newer TV's have a "game mode" which is supposed to reduce the lag by not doing as much processing.
http://en.wikipedia.org/wiki/Dlp
After reading this I think imma go with the Samsung DLP's which is showing up alot on the commercials, and after seeing it for myself It shows it has potential for games after playing Dead Rising on it on best buy.
>:(
Snake-"Metal Gear?"
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diabolos
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10. October 2006 @ 19:31 |
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Quote:
Yeah but, they're estimating......or maybe someone sat 24 hours a day for 7 years to check it out?
The plasma technology has been around since the 1970s and uses light emmitting phosphors that are similar to what is used in CRTs.
Plasma Technology:
http://en.wikipedia.org/wiki/Plasma_tv
Here is a study done by Pioneer who in my book is number 2 in the plasma game...
http://www.pioneerelectronics.com/pio/pe...20-%20FINAL.pdf
Adobe reader required!
-----
I feel that the LCoS and DLP both have better pictures than Plasma or LCD sets. The picture just seems warmer. If the projection tv manufactures can find a longer lasting light source I would be hard pressed to find a reason to buy a flat panel, unless I want to put a tv on the wall or course.
LEDs last for 20,000+ hours and lasers last even longer. Don't forget that with LEDs and Lasers comes the demise of the color wheel and the rainbow effect!
Ced
This message has been edited since posting. Last time this message was edited on 10. October 2006 @ 19:42
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Largarto_
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10. October 2006 @ 19:51 |
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What I meant was it hasn?t been that long (7 years) since the short life problem with the plasmas was reportedly fixed. It?s the mfg. estimated claim based on accelerated aging tests. Performance is greater but, I?ll hang with the DLP for now.
?We are all actors portraying ourselves, to other actors portraying themselves?
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19. October 2006 @ 09:17 |
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@diabolos
Dosen't the newer Sony LCDs use LCoS technology though.
Say like the Sony KDS50A2000 ? That's the one I've been looking to get.
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Largarto_
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19. October 2006 @ 09:32 |
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No, the KDF models are LCD projection. The KDS models (SXRD) models are LCOS.
?We are all actors portraying ourselves, to other actors portraying themselves?
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19. October 2006 @ 12:30 |
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That's what I just posted ?
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Largarto_
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20. October 2006 @ 05:55 |
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Sorry, just trying to differentiate between old LCD and the LCOS (Liquid crystal on silicon).
?We are all actors portraying ourselves, to other actors portraying themselves?
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20. October 2006 @ 07:07 |
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No prob.
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diabolos
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20. October 2006 @ 17:17 |
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Quote:
Dosen't the newer Sony LCDs use LCoS technology though.
Yes they use a 3-Chip LCoS design similar to JVC's HD-ila technology. There is no color wheel.
Ced
This message has been edited since posting. Last time this message was edited on 20. October 2006 @ 17:40
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BigMike2
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4. November 2006 @ 18:19 |
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Originally posted by dabig25:
@diabolos
Dosen't the newer Sony LCDs use LCoS technology though.
Say like the Sony KDS50A2000 ? That's the one I've been looking to get.
Yes it does, I've begun shopping for the 55" model of this TV. Execellent picture.
Mike2
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4. November 2006 @ 18:38 |
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LCD VS DLP
Step 1 - Definition of each technology.
The first step in comparing these two technologies is to understand how each works. Once we know the basics of how each works then we can proceed to step 2 the differences in performance.
DLP Process
1. Light is emitted from a light source (ie Intense lightbulb).
2. It is condensed and passed through a color filter/color wheel.
The color wheel turns at several thousand RPMs and had at least the 3 primary colors on it. When it wants to show a red pixel the light shines through the red part, likewise with green and blue. Some color wheels have more than 3 colors but 3 is all that is technically needed.
3. The light then hits the DLP chip.
The DLP chip consists of thousands of mirrors that can effectively be turned on or off. Each pixel (a pixel is a dot that makes up the picture you see) is made up of a group of these mirrors. If half the mirrors are on when the light hits them then you get a darker color. If all of them are on you get a bright color. Because they are so small and on a micro chip, these mirrors can move off and on hundreds of times a second. The DLP Board, Processor and Memory change the incoming video signal to the picture.
LCD Projection Process
1. Light is emitted from a light source.
2. It is broken apart into Red, Blue and Green and taken in 3 different paths.
3. Each of these light beams then passes through a transparent LCD.
At this point we have 3 images (one red, one blue and one green).
4. These 3 LCD images come together in optics to form one full color picture that is projected onto the screen.
First Thoughts and Comments
LCD projection seems a simpler solution than DLP. LCD projection has no moving parts which may make it less prone to catastrophic. However the only major moving part is the color wheel as the likelihood of the DLP chip failing is slim. LCDs also have been shown to get dead pixels. So while the LCD is less likely to produce no image at all, it may be more likely to have dead spots which may or may not be noticeable.
Also the above diagrams and explanations show systems with 1 light source. It is becoming more of a standard to have 3 light sources (red, green and blue). While this triples the number of light emitters (bulbs) needed, it produces an even sharper picture.
How DLP and LCD Projection are Alike
LCD Projection?s and DLP?s resolution (the amount of pixels or dots that make up the picture) are pretty comparable. Each television?s max resolution depends on the specific television that you are looking at. All will be at least 1080i (1,080 pixels across) but most will be able to show a much higher resolution. HD TV signals are usually 1080i but will be going up in the future. Higher resolutions are also desired for those who like to attach PCs (or Macs) to their televisions.
DLP and LCD Differences/Downfalls
DLP usually wins the battle of ?Screen Door Effect? and ?Contrast?. LCD wins the ?Rainbow Effect? and ?Color Saturation? war. These are all described below.
Screen Door Effect
The ?Screen Door Effect? is very similar to what it sounds. Think of the difference between looking through a window and through a screen. The screen door effect is the distance between pixels as seen here.
DLP normally beats LCD in this regard. The mirrors on a DLP chip are super close. By design it is harder to get the pixels on an LCD as close. Now remember this is normal generic terms. One can judge this by getting really close and looking at the pixels. If you get real close and see no difference then this ?Screen Door Effect? doesn?t affect you.
Rainbow Effect
DLP has a ?Rainbow Effect?. If you quickly move your eyes from one side of the screen to another you may see a rainbow of colors. Not everybody sees this. This is due to the colors being generated by light shining through a color wheel. If 3 colored light sources are used in a DLP projector/television there is no rainbow effect. However this is usually quite a bit more expensive. Faster color wheels and color wheels containing intermediate colors reduce this. Keep in mind that you will probably not even be able to tell.
There is no rainbow effect for LCD Projection.
Contrast
Contrast is the difference between the darkest black and the brightest white. Traditionally DLP has the best range. However recent LCD advancement has made this difference almost nothing although DLP still has a slight advantage.
Color Saturation
Color saturation is intensity or purity of a color. Higher color saturation makes the picture more alive. Historically LCD/LCD Projection has a higher color saturation than DLP.
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5. November 2006 @ 08:27 |
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Originally posted by dabig25:
@diabolos
Dosen't the newer Sony LCDs use LCoS technology though.
Say like the Sony KDS50A2000 ? That's the one I've been looking to get.
Yes it does, I've begun shopping for the 55" model of this TV. Execellent picture.
Mike2
I got the 55 inch Sony SXRD...........LOVE IT !!
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