what is the difference between 1080 i and 1080 p??

Question

which is better, and is it much better than 720?

also, what does crt mean, and is it good or bad?

Answer 1

CRT is an acronym for Cathode Ray Tube - this is your run-of-the-mill tube TV. Not so good.

1080p is much better than 1080i. Though you probably won't be able to view that much of difference between 720p and 1080p unless you have a plasma TV larger than 61".

1080p means that there are 1,080 vertical lines of resolution. The "p" means that this picture has "Progressive Scan" technology which means a more frequently refreshed, clearer, picture for you.

1080i is basically the same except the "i" dictates that this is an interlaced image and isn't as frequently refreshed as 1080p.

Good luck and I hope this helps.

Answer 2

The first guy is right on some accounts but mistaken on others. 1080i is actually refreshed more often that 1080p. In fact, twice as fast at 60 times per second which 1080p is refreshed at 30 frames per second.

1080p isn't all that useful as of right now as all broadcasted channels are in either 720p or 1080p. The only technologies capable of taking advantage of 1080p is some high definition titles and some games on the PS3.

The difference between 1080p and 720p or 1080i seems large on paper but the average person will not be able to tell much of a difference between the two, especially at normal viewing distances.

CRT is short for Cathode ray tube and it is still a great technology. Producing the darkest blacks currently available on any TV technology and great colors. The only downside is size(both screen and the size of the box) and weight(can easily exceed 100 pounds)

Answer 3

When television was first introduced, the picture contained 525 lines per frame at 30 frames per second. Because of bandwidth limitations and picture tube limitations, those 525 lines were separated into two fields of 262.5 lines each; the first field contained the odd-numbered lines, and the second filled in the even-numbered lines. The fields were transmitted at 60 fields per second. This was supposed to be fast enough so that the eye would blend both fields together into one 525-line picture. This process is called interlacing, and is the "i" in 1080i. A picture displayed at 1080i shows half the lines first and the second half 1/60 second later.

With modern digital TV and fixed-pixel displays (LCD, plasma, DLP), there is no problem showing all of the picture at once. so the lines are displayed progressively (1,2,3,..etc) not leaving any out. This is progressive scan and is the "p" in 1080p

Progressive scan is always preferred over interlaced because interlacing introduces "artifacts" into the picture. If the picture does not change from field to field (a stationary picture of a stationary object), then there is no difference between "i" and "p". But when objects move, the two fields of the interlaced picture will not be the same causing the edges of moving objects to break up into jagged lines (the moving edges only show 540 lines).

All fixed-pixel tvs (except for one plasma model) display progressive scan images. They are all "p": either 1080p or 720p, 768p, whatever number of lines the display screen has. However, much HDTV is broadcast as 1080i. The tv will convert the interlaced picture to a "p" picture by filling in the extra lines for each field. How well that is done determines how good the TV will display moving objects, and some sets are better than others in this regard.

Answer 4

Yes. In terms of resolution per video frame 1080p is twice 1080i. However, on screens smaller than about 50 inches most people cannot detect a significant difference. If you have a big display and want to be sure you have the best available in consumer video go with the 1080p.

Answer 5

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RE:
what is the difference between 1080 i and 1080 p??
which is better, and is it much better than 720?