That's a dangerous article, full of selective, misleading and irrelevant mis-information that is only designed to bring the author some attention. Anyone that believed the message he is putting across would do themselves an injustice. I usually beat the drum about 1080p TVs having 1080p inputs, but that's absolutely nothing to do with broadcast and storage standards only using 1080i. (Which isn't the case anyway, as it now appears that both BD & HDDVD will be storing HD films as 1920x1080p24/25).MR2Harvey said:
A great set of questions, but how on earth can anyone get the answers to these questions. Not even the manufacturers are willing to disclose information about whether a particular input resolution will be scaled, what deinterlacing is used, whether they've implemented cadence detection on the HD inputs, etc. Is there any web-site that pulls each new TV apart and gets to the bottom of these types of question?tryingtimes said:However consumers do have to be very careful at the moment.
Not sure that is greed, but normal technology progress.Pecker said:.
The introduction of HD in steps, rather than when 1080p displays can be produced at an affordable level, is nothing short of greed by the manufacturers.
MuppetPutman said that Blu-ray and HD-DVD is also unlikely to manage 1080i either. Most HDTV sets run their horizontal scan at a constant 33.8 kHz, which is what's needed for 1080i (or 540p). 1080p scans pictures twice as fast at 67.6 kHz. But most of today's HDTVs don't even support external 720p signal sources, which requires a 44.9 kHz higher scan rate.
Oh and broadcast is obviously the only way of getting a picture i mean HD-DVD and Blu-ray arent possibilities for 1080p and and neither is the PS3 is it.........First off, there is no 1080p HDTV transmission format. There is a 1080p/24 production format in wide use for prime time TV shows and some feature films. But these programs must be converted to 1080i/30 (that's interlaced, not progressive scan) before airing on any terrestrial, satellite, or cable TV network.
This is interesting.........Oops! Almost forgot, that same 1080p TV may not have full horizontal pixel resolution if it uses 1080p DLP technology. The digital micromirror devices used in these TVs have 960x1080 native resolution, using a technique known as “wobbulation” to refresh two sets of 960 horizontal pixels at high speed, providing the 1920x1080 image. It's a “cost thing” again. (Let's hope these sets don't employ the 540p conversion trick as well!
Threads on the Sky HD forum suggest that most LCD's simply take a 1080i signal and turn it into 540p not sure about Plasmas.hornydragon said:I think he is mainly reffering to cheap RPTV's offered in the US not LCD and plasma but cheaper processsors will do things like scale 1080i to 540p
Yep this is a bob deinterlace and to be honest its what most progressive displays (and players) will do if they have no film mode detecting deinterlace. Its also what the majority of deinterlacers use as the fallback mode if they can't detect a valid film cadence or detect field based video.tryingtimes said:Turning 1080i into 540p isn't quite as bad as it sounds - you're not loosing any of the original 1080i information .
Yes, but if it's a film source (which is quite likely with BD or HDDVDs) then a proper film mode will weave two fields and double the frame to reproduce the original progressive sequence with out losing ANY information. I believe there's a lot to be gained by doing that, at least with big 1080p displays, anyway. Ony a few players / processors / dsiplays do it as yet, though. I believe that the Panasonic PHW screens DON'T do it, but the PHD screens DO do it, for example. This sort of information is rather difficult to find, unfortunately. Manufacturers always have different marketing-driven names for it.tryingtimes said:Turning 1080i into 540p isn't quite as bad as it sounds - you're not loosing any of the original 1080i information