What is 1080i and how does it give you a high definition picture??
Answer:
1080 interlaced gives you a higher resolution because instead of the typical 480 lines of resolution on a picture screen in a standard definition television, there are 1080.
More lines, more detail.
1080i means you have two fields per 30-th of a second, each one with 540 lines.
Standard def is two fields, each with 240 lines. More lines (540 vs 240) means higher quality (more detail).
1080p refers to the amount of pixels that are spread across the area of the screen, the more the pixels, the sharper the picture. Before they came out with 1080p, most LCDs and plasmas were under 800p. One thing to consider also, the bigger the screen, the more spread out the pixels will be, resulting in a less sharper image.
This measuremeant has to do with the number of lines of resolution per square inch on the television screen. So if it is 1080i, that means 1,080 lines per square inch. I believe the original H.D. came in 1020i.
This gives you a H.D. picture because the more lines of resolution per square inch there is, the better the color quality and crispness of the picture. If you look closely at the old style analog television screen (while on), you can actually see the faint resolution lines I refer to. The lines go across the width of the screen.
when you see these numbers (480i, 480p, 720i, 720p, 1080i, 1080p) it's the Television or Monitor's Resolution that's being described,
1080i means that there are 1,080 lines of resolution
more lines of resolution= more detail
the only drawback to 1080i is that it's not as good for fast action as 720p and 1080p are.
the i stands for interlace, which means that only every other line of resolution is being refreshed each second
with progressive scan displays (the p) every line of resolution is being refreshed every second, which will give you a much smoother picture and is optimal for programs that have a lot of fast moving action like sports.
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