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Why 1080p? | |
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By Rodolfo La Maestra Senior Technical Director Posted on January 18, 2006 Category: Technology |
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Register Now to receive notification of new HDTV Magazine Articles via email as soon as they are published. What are 1080p manufacturers doing on their current 1080p sets? Are they really implementing all that 1080p can and should do? Do people need all that 1080p can do? When? How could one find out if a set is actually suited to be ready for near future 1080p media, such as Hi Def DVD coming in a few months?
I will cover all those subjects gradually in short articles, but first let us mention a couple of key points.
1080p resolution quality in displays, processors, players, recorders, pre-recorded media, etc. is rapidly becoming the next stage of this HDTV industry; the 1080p buzzword has been also loosely used to identify the "new breed of top quality HDTV sets." In order to be actually ready for such level of quality throughout the HD system, digital display devices that claim 1920x1080p capabilities should be designed and suited to accept 1080p/24/30/60 fps signal from an external 1080p progressive source.
Not accepting 1080p from an external source will force the source to supply a 1080i version to the TV which would do the 1080p upconversion job with its internal/proprietary de-interlacer circuitry, typically not as good as one should expect of equipment at this level of resolution.
Regarding deinterlacing, do these new 1080p sets deinterlace properly 1080i? What happens when it is not properly done and you still want that TV? One option could be to take that deinterlacing job outside the TV so a dedicated video processor can improve it. However, if the TV does not accept 1080p, such limitation would preclude the use of a higher-quality 1080p video processor/scaler, which usually is expected to perform better 1080p upconversion, such as Faroudja, DVDO, Lumagen, or the Dragon Fly scaler/noise reduction implementing the new Silicon Optix "Realta" chip (a professional video technology originating from Teranex), among others.
Most people would consider it irrational to spend $2000 on a 1080p video processor to feed a $3000 1080p HDTV just because the TV is weak in that area, but other people might consider the option of having 1080p inputs an important future proof feature that would allow the component approach for upgrading the overall quality of the HD system where and when it is needed.
Separating the video processor from the display device to follow individual upgrade paths could be a good solution, especially for front projectors/large projection screens; the processor might be software upgradeable, while many HDTVs usually are not. An owner of an otherwise good 1080p HDTV display might not like how the set handles the internal 1080p video processing that cannot be upgraded.
The higher quality of 1080p opens the opportunity to sit closer to the image and open the angle of view, which would immerse the viewer into a cinematic experience by enhancing the peripheral vision without sacrificing resolution; it also provides the possibility for using larger screens for a home theater environment.
However, viewing non-1080p content on a 1080p HDTV set that might have insufficient quality to properly upscale, deinterlace, and/or upconvert, could certainly produce a variety of video artifacts that would actually force the viewing position to be further back to avoid seeing them, which is the case of many of the first generation 1080p TV sets introduced over the last year; upgrading to a larger screen could accentuate the visibility of those artifacts.
Additionally, in many viewing situations the higher quality of 1080p resolution might not be noticed as an improvement by people accustomed to view the TV just as the typical TV box from far away; for those, a 1080i, or 720p, or even a 480p ED level DTV could be all they should need. In other words, some people driven by the 1080p bug of "more is better, and I have to have it" might be paying extra for 1080p resolution they would never be able to see as an improvement on their room/viewing conditions.
Without changing the tutorial intention of this series of articles, the next part takes a look at an example of how some 1080p rear projection HDTVs are being implemented; in our first case we will step behind the technical curtain of Syntax-Brillian's new 1080p set.
Stay tuned for the next 1080p (part 2) article of this series, coming soon.
Posted by Rodolfo La Maestra, January 18, 2006 07:55 AM
Reader Commentary Jan 18, 7:33am I made a point of seeking out the Sony SXRD HDTV set to see whether there was a improvement in the PQ since I have a 3 year old Grand Wega II. Quite frankly, my wife and I could not discern any appreciable improvement in the PQ, which came as a disappoint Jan 18, 11:42am Mr HD addict (no actual name was provided), Your experience goes along with some of the points I made regarding that some 1080p implementations on first generation sets do not necessarily show considerable improvement over good quality sets. However Jan 18, 12:22pm Thank you for your comments. I must say that the Sony 60XBR1's PQ was still very good, but I guess I was anticipating more. We did step back to a distance that would approximate where I would have positioned the SXRD, which is further from where we have t Jan 18, 12:56pm HD Addict, Interesting the way you concluded your view "So what you are saying is that Sony has introduced a HDTV the benefits of which won't really be appreciated until the Blue Ray and its rival DVD players arrive on the scene" But no, I am not sa Jan 18, 1:30pm What I meant was that since no HDTV is presently being transmitted in 1080p, at the moment, then even the SXRD TV sets will not be able to demonstrate what they are capable of until the Blue Ray DVD recorders/players arrive on the scene, and that is only Jan 18, 1:44pm HD Addict, You are seeing a 1080p picture on the SXRD already, the problem is how this was created. The 1080i satellite you tuned was shown as a 1080p version, but deinterlaced in the set the best the set can do. Even when you have no 1080p content Jan 19, 7:33am I've noticed the Sony’s 60" Grand WEGA™ SXRD™ Rear Projection HDTV has 1080p output but not a 1080p input. Is there a model using sxrd technologly able to take a 1080p signal? The reason I ask is because Sony's Playstation 3 will inclu Jan 19, 9:27am Chris, None of the 3 RPTV SXRD (50, and 60 XRB, 70 Qualia) sets from Sony have 1080p inputs, they will in the next generation coming later this year, Sony is expected to formally announce their new products in their customary company Spring announcemen More on Technology
More from Rodolfo La Maestra
About Rodolfo La MaestraRodolfo La Maestra is the Senior Technical Director at HDTV Magazine and participated in the HDTV vision since the late 1980's. In the late 1990's, he began tracking all HDTV consumer equipment, and since 2002 he authors the annual HDTV Technology Review report covering HDTVs, Hi-def DVD, content providers, broadcast, cable, satellite, government, standards, connectivity, content protection, H/DTV tuners and DVRs, etc. In addition Rodolfo has authored a variety of tutorials, books, and educative articles for HDTV Magazine, DVDetc, and HDTVetc Magazines, Veritas et Visus Newsletter, Display Search, and served as technical consultant/editor for the "Reference Guide" and the "HDTV Glossary of Terms" for HDTVetc and HDTV Magazines. In 2004, he began recording a weekly HDTV technology program for MD Cable television, which by 2006 reached the rating of second most viewed by the public, here is the opening episode.Rodolfo's background encompasses Electronic Engineering, Computer Science, and Audio and Video Electronics, over 4,700 hours of professional training, a BS in Computer and Information Systems, and over thirty professional and post-graduate certifications, some from American, George Washington, and MIT Universities. Rodolfo was also Computer Science professor for over 700 students in five institutions between 1966-1973 in Argentina, for IBM, Burroughs, and Honeywell mainframes. After 38 years of computer systems career, Rodolfo retired in 2003 as Chief of Systems Development from the Inter-American Development Bank where he directed 65 software-development computer professionals, supporting member countries in north/central/south America 24x7. In parallel, from 1998 he helped the public with his other career of audio/video electronics. Rodolfo started with hi-end audio in the early 60’s and merged with Home Theater video, multichannel audio, widescreen laser disc, anamorphic DVD, 16x9 NTSC displays, HDTV, Hi-def DVD, IPTV, HDMI, and 2.35:1 Cinemascope HD Home Theater over the past 40+ years. When HDTV started airing in November 1998, he was an early adopter of HDTV and realized that the technology as implemented would overwhelm regular consumers due to its complexity, and it certainly does even today. Rodolfo then launched his HDTV mission of educating and helping consumers understand the complexity, the challenge, and the beauty of the technology, so the public learns to appreciate HDTV not just as another television. |
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