Hd Tv
01-30-2008 | 07:56 AM
#42
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From: ɯooɹpǝq ɹnoʎ
Vehicle: ǝdnoɔ sısǝuǝƃ
Just so our other members aren't mislead...
1080p > 1080i > 720p (I prefer 720p to 1080i)
i stands for interlaced, p stands for progressive. 1080i means 540 lines are displayed on the first scan, 540 on the second scan (interlaced) -- the timing between the two scans is what sometimes causes the "fade" or "ghost" when watching HD NFL broadcasts or anything in fast motion
1080p only really exists in Blu-Ray disc, HD DVD, and PS3. There are very few broadcasts in 1080i, and overwhelmingly most HD broadcasts are in 720p.
It's questionable whether the price different from 720p and 1080i to the 1080p is worth it, since most of your channels aren't going to be broadcast in 1080p yet and the untrained eye can't usually tell a difference unless comparing side-by-side.
edit: Found this on CNet
From Wikipedia:
1080p > 1080i > 720p (I prefer 720p to 1080i)
i stands for interlaced, p stands for progressive. 1080i means 540 lines are displayed on the first scan, 540 on the second scan (interlaced) -- the timing between the two scans is what sometimes causes the "fade" or "ghost" when watching HD NFL broadcasts or anything in fast motion
1080p only really exists in Blu-Ray disc, HD DVD, and PS3. There are very few broadcasts in 1080i, and overwhelmingly most HD broadcasts are in 720p.
It's questionable whether the price different from 720p and 1080i to the 1080p is worth it, since most of your channels aren't going to be broadcast in 1080p yet and the untrained eye can't usually tell a difference unless comparing side-by-side.
edit: Found this on CNet
QUOTE
1080i sources get "painted" on the screen sequentially: the odd-numbered lines of resolution appear on your screen first, followed by the even-numbered lines--all within 1/30 of a second. Progressive-scan formats such as 480p, 720p, and 1080p convey all of the lines of resolution sequentially in a single pass, which makes for a smoother, cleaner image, especially with sports and other motion-intensive content.
From Wikipedia:
QUOTE
Various television networks in the world broadcast HDTV programming in 1080i and 720p; no 1080p broadcasting exists at this time. However, material that has been digitized from a 35 mm film source is basically 1080p/24, fit into 1080i/50 or 1080i/60 (progressive with segmented frames). With proper 3:2 deinterlacing reversal, it can be converted back into a true 1080p/24 signal