In relation to hd tvs what is the difference if any between the p or the i in 1080p and 1080i.?

Answer 1

p refreshes the whole screen with each scan. i refreshes every other line so it takes 2 scans to refresh the whole screen. p needs double the resources but gives a better picture.

Answer 2

P stands for progressive and I stands for Interlace. In a progressive picture, each 'line' of the image is refreshed each time the picture refreshes giving you nice, smooth playback (particularly important when watching fast moving images). Interlace means that every second line is refreshed each time the image refreshes (which can make fast moving images seem jagged). If you have access to a progressive picture, that is the one to go for!

Another note:
You won't find 1080p broadcast (say on Sky HD) only 720p and 1080i. This is because of the bandwidth constraints. HD Disc formats support 1080p (as does the PS3).
So when you're choosing between a 720p broadcast and a 1080i broadcast, take into consideration what your watching, 720p, despite being lower resolution will tend to look better.

Answer 3

Truth be told, theres not a huge difference (and most High Def programming is only broadcast in 1080i or 720p, and there's little or no chance they'll jump to 1080p any time soon because of bandwidth issues.)

1080i, the former king of the HDTV hill, actually boasts an identical 1,920x1,080 resolution but conveys the images in an interlaced format (the i in 1080i). In a tube-based television, otherwise known as a CRT, 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. As opposed to tubes, microdisplays (DLP, LCoS, and LCD rear-projection) and other fixed-pixel TVs, including plasma and LCD flat-panel, are inherently progressive in nature, so when the incoming source is interlaced, as 1080i is, they convert it to progressive scan for display.

Answer 4

Blu-ray runs 1080 lines to make up your picture but only if you have a 1080p tv if you have a 1080i tv it will only have 720 lines making up the picture and don't buy Sony it's only a samsung with a different badge. If you want a good tv have a look at the Panasonic's they are the best value for money at the moment.

Answer 5

The i stands for interlaced -- the incoming signal refreshes every other horizontal line on each frame. The p is for progressive scan, where every horizontal line is refreshed. Progressive scan provides a higher quality of video than interlaced, but they also use twice as much bandwidth / memory. If you have compared Blu-Ray to HD-DVD, you will find that prerecorded movies come in 1080p on Blu-Ray but only 1080i on HD-DVD. For computer storage, a Blu-Ray disc holds about 25GB, while an HD-DVD only holds about 15GB.

Answer 6

The P and I stand for Progressive and Interlaced. Progressive means each pixel on the screen is refreshed, when the signal is sent to the television. Interlaced means each LINE is refreshed, usually twice per frame, alternating between odd numbered lines and even numbered lines. On a good High-Def screen, an interlaced picture is usually much better looking than a progressive picture.

See the link below for more info.

Answer 7

speaking in simple terms there are two types of scan employed in hdtv's-progressive scan (1080p) and interlaced (1080i). in 1080i sets the image is scanned in two halfs and interlaced to form a picture. in 1080p sets the whole image is produced in one hit.

Answer 8

1080i and 1080p are almost the same thing there's no real diffence becuse there both so have such sharp picture that u have to be really skilled to see the difference, so no matter what both 1080i and 1080p have almost the same.

Answer 9

P - Progressive scan
i - Inter laced

This is to do with the number of vertical line and the way they are displayed.

Check out this http://www.cnet.com/4520-7874_1-5108580-3.html?tag=lnav
or
http://en.wikipedia.org/wiki/1080i

Answer 10

1080p is way better trust me me skidder