1080i vs 720p

If one has a 720p projector which can output at 1080i, is it better when using regular dvd source or HDTV to watch in 1080i or use my Faroudja processor and watch in 720p, technically speaking that is.

jcbower02-24-2010 8:26pm

Showing 2 responses by bigbucks5

bigbucks5 Details Discussions Posts This discussion Message User 184 posts 02-25-2010 at 05:28am Copy Comment URL Report Comment Edit Delete Dg1968 So what does it mean that my LCD is 1080i if it doesn't actually display 1080i? This is an 8 year old rear projection Sony LCD. It doesn't display 1080p only 1080i. If "All digital displays (plasma, LCD, LCD projectors, etc...) are progressive" then it would be able to display 1080i and 1080p, now wouldn't it?
bigbucks5 Details Discussions Posts This discussion Message User 184 posts 02-25-2010 at 08:37pm Copy Comment URL Report Comment Edit Delete OK, here's where I've got to call foul... "1080p has TWICE the data of either 720p OR 1080i" 1080p and 1080i transmissions have the SAME amount of data (1080 lines). The only difference is that the 1080i is transmitted to the display in 2 groups of 540 lines (even & odd) while the 1080p is transmitted in one pass, top to bottom. The amount of data is the same. It's not like 1080i is repeating the same 540 lines. In theory, 1080i is better than 720p especially if you are talking about a static picture. The problem arises when motion is thrown in to the equation.

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