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About 1080i

L

lesman

2[H]4U
Joined
Dec 30, 2004
Messages
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Ok, I know how the whole interlaced vs. progressive thing works, and understand that usually 720p looks better than 1080i because it's in progressive scan....but this is my question: how does that all work out on an LCD monitor? Obviously there are no "scan lines" on an LCD monitor....so would 1080i look superior to 720p on an LCD? Or is there an actual difference that is noticable? What are the differences, since LCD don't have scan lines? Thanks a lot.
 
Another way of looking at the question, and maybe more relevant is, does the LCD monitor convert any signal fed to it to the native rate? If this is the case as it is with many monitors with built-in video processors then it should not matter what you feed it as it will always display at its native resolution. If the monitor does not, then take a look at the native resolution of the monitor and that should give you some insight. If the monitor is 1366x768 as most new Sharp monitors are, then 720p will look better.
 
lesman said:
Ok, I know how the whole interlaced vs. progressive thing works, and understand that usually 720p looks better than 1080i because it's in progressive scan....but this is my question: how does that all work out on an LCD monitor? Obviously there are no "scan lines" on an LCD monitor....so would 1080i look superior to 720p on an LCD? Or is there an actual difference that is noticable? What are the differences, since LCD don't have scan lines? Thanks a lot.
Click to expand...

Exactly which 1080i screen were you looking at where you actually saw scan lines?
 
BillR said:
Exactly which 1080i screen were you looking at where you actually saw scan lines?
Click to expand...
Well, I didn't actually look at a 1080i TV with scan lines, but if it's an indication of anything, scan lines are very visible on any CRT 480i TV I have ever seen. I doon't understand where you are going with this..... :confused:
 
lesman said:
Well, I didn't actually look at a 1080i TV with scan lines, but if it's an indication of anything, scan lines are very visible on any CRT 480i TV I have ever seen. I doon't understand where you are going with this..... :confused:
Click to expand...

1080i and 720p are specs for “TV” use. When both signals are equal it’s virtually impossible to tell which signal is which.

When you start feeding HD signals into computer monitors the game changes, especially one designed for a 480i input.

Although 480p was indeed ratified as a “standard” (Fox tried it for a bit then went back to the more popular 720p and 1080i) it’s a standard almost no one uses, or will use. 480p will remain the standard for conventional DVD. 480p will also remain useful for those folk who purchased EDTV instead of HDTV.
 
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