I'm going to be looking at plasma's soon and I've got to say that I'm a little confused as to what exactly is the difference between 1080p and 1080i.
Difference between 1080p and 1080i?
- Thread starter Coldkilla
- Start date
p=progressive scan (every line of every frame is included) while i= interlaced (every other line of each frame is included). Generally, if a Plasma advertises 1080i, its actually a 720p set that can accept a 1080i signal and downsamples it to your 720p screen. Any HDTV signal is either in 720p or 1080i, whereas HD-DVDs and Blu-Ray can be in 1080p.
http://en.wikipedia.org/wiki/1080p <---More technical explanation of 1080p.
http://en.wikipedia.org/wiki/1080p <---More technical explanation of 1080p.
YOyoYOhowsDAjello
Moderator<br>A/V & Home Theater<br>Elite member
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I hope he'll keep it confined to this thread
http://forums.anandtech.com/me...id=67&threadid=2104825
I'm withholding comment because they are more or less the same depending on what you are talking about.
I've never heard of a 1080i plasma, and I suspect it's marketing as mentioned to mean it takes a 1080i input (which any HDTV of recent years will do).
I've never heard of a 1080i plasma, and I suspect it's marketing as mentioned to mean it takes a 1080i input (which any HDTV of recent years will do).
YOyoYOhowsDAjello
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When I went into CC to get my parents' TV, I saw a couple of "1080i" plasmas from Hitachi and I was going to ask our sales guy about it, but he was about 45 years old and it was his first week and really didn't know what he was talking about so I didn't give him a hard time about it. I looked them up afterwards to try to figure out the specs on them and they had a resolution of 1280x1080, so I'm not sure if they were using "1080i" to indicate 1080 lines of vertical resolution while not being able to really display 1920x1080, or if it was really interlaced somehow.
He did manage to try to sell us the $120 6 foot HDMI cables and such though, so I guess that's the first thing they teach the sales guys
When he told us that a 52" DLP weighed about 250 pounds, I had a feeling he was getting a bit mixed up with different technologies.
zinfamous
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the confusion comes when Plasma (or any 720p HDTV for that matter) is advertised as 720p/1080i
...which means 1080i compliant. kind of ridiculous, but I guess it's just posted on there as reassurance for consumers that they will be able to receive those 1080i broadcasts.
zinfamous
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Originally posted by: YOyoYOhowsDAjello
When I went into CC to get my parents' TV, I saw a couple of "1080i" plasmas from Hitachi and I was going to ask our sales guy about it, but he was about 45 years old and it was his first week and really didn't know what he was talking about so I didn't give him a hard time about it. I looked them up afterwards to try to figure out the specs on them and they had a resolution of 1280x1080, so I'm not sure if they were using "1080i" to indicate 1080 lines of vertical resolution while not being able to really display 1920x1080, or if it was really interlaced somehow.
He did manage to try to sell us the $120 6 foot HDMI cables and such though, so I guess that's the first thing they teach the sales guys
When he told us that a 52" DLP weighed about 250 pounds, I had a feeling he was getting a bit mixed up with different technologies.
lol. I saw one of those $120 HDMI cables at BB the other weekend. I almost took a dump right there, on their floor....such was my reaction to this criminal marketing.
YOyoYOhowsDAjello
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Here's a couple of the models they had advertised as "1080i" plasmas while the 1280x720 or 1366x768 displays were all advertised as "720p" (rather than 720p/1080i)
http://www.circuitcity.com/ssm...m/ccd/productDetail.do
http://www.circuitcity.com/ssm...m/ccd/productDetail.do
I only did some basic reading about them, but it seemed that they could take a 1080p input, and the video processing was 1080p as well, so from what I read, it seemed like it was a 1280x1080 progressive display, but they didn't want to call it "1080p" because that would imply 1920x1080, so "1080i" was used.
Hitachi breaks down their plasma displays into different categories of 1080
http://www.hitachi.us/Apps/hit...i/forhome/ubcg/&nId=iD
"Full HD1080" for 1920x1080 displays
"HD1080 1.3MP" for 1280x1080 displays
"HD1080 1.1MP" for 1024x1080 displays
So I think they're all progressive, but they're trying to distinguish between the true 1920x1080 displays vs. the ones with non-square pixels that don't have enough horizontal resolution.
I guess that these different levels of 1080 vertical resolution displays became "1080p" and "1080i" in the marketing department or something?
IIRC, Hitachi uses a technology on their HD1080 (the interlaced, 1280x1080 sets), that Fujitsu pioneered with their 55" Plasmavision sets, which uses a technology similar to a CRT gun to provide a picture. As such, it actually is an interlaced TV. Of course, I could be completely off, but I'm pretty sure it's something like that.
Yep. AFAIK those 1080 resolutions are not included in HDTV specifications.
As much as I love 1080, this is truly marketing at work.
Let me tell you that working at Magnolia and trying to explain how the Hitachi is not a true 1080p set could be one of the most frustrating things I have to do.
As much as I've been blamed for "buying the hype", I know better. But I can understand "don't believe the hype."
But marketing is marketing. 1080p is a great thing if done properly.
Brings up a recent event - taking camping/fishing pictures and I was snapping away with my 5 year old 4-5 'megapixel' camera. Buddy broke out his camera and started taking pictures of our prizes and the immediate reaction was "how many megapixels? 8?! Wow! That's a nice camera!" But buddy couldn't figure out why his pictures sucked so much, I snapped a few with his point and shoot for him to keep a record of his 4 pound smallmouth bass (NICE FISH!)
Next reaction was - "damn spidey, why do your pictures come out so much better? Even your camera takes better pics than the 8 megapixel one!!!???" Mind you I'm not a good photographer, but I at least have a basic understanding.
This brings us around full circle. 1080p does not automatically mean better, just as higher megapixel cameras do not equal better. It's just a feature that should be looked for to fully enjoy HD. If done properly. Just like a camera with higher resolution does not automatically = better, giving a display the extra working room doesn't hurt. IF done properly.
Make all the fun you want. If you understood digital transmission you would understand the importance of the cable.
Digital is analog. You don't need an expensive cable, just one that does the job according to what you are trying to accomplish and according to the specification you are trying to meet.
I've tried to explain this before, but am met with "no juuss! It's digital, you either get a picture or not!"
So I just give up because I can't sufficiently make my point because the point is not understood. Folks assume a one is a one and a zero is a zero and there is no inbetween without regards to bandwidth of the cable (no, not internet bandwidth, that is throughput), the true meaning of bandwidth.
While yes, this is 100% true, for most consumer purposes, such as a 6' HDMI cable from a cable box or Blu-Ray/HD-DVD player, a barebones $6 cable from monoprice will give the identical image that a Monster M-Series $164.99 cable would provide (and yes, that is how much they cost for 4'). Once you get to the point of 25'+ runs, I agree, a higher-quality cable is important, not only to even receive a picture, but to ensure it is artifact-free. However, for short runs, pretty much any basic cable is going to have the bandwidth needed to carry even full 1080p from a HD-DVD/BR player. What I dislike about Monster is how they advertise their highest-end cables as being able to pass 14.23Mbps of bandwidth, even though no device on the market needs even half of that. Again, to repeat myself, any barebones cable from a reputable place like monoprice should be able to pass 1080p at normal cable runs.
So my free 6' Toslink cable that came with my AV710 is just sh1t compared to a 6' Gold plated end with silicone jacket? That is digital, right?
Post a thread about Toslink and optical transmission.
Go ahead. Do it. I dare you. No, in fact...I double dog dare you.
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