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Let's say you feed a 16:9 projector, say Panny AE300, with a 720x480 signal (1,5:1)from a HTPC. Would the projector then scale this image to fill the screen, stretching it to 16:9 or would it scale the image linearly, leaving black bars on the sides of an image with wrong proportions?


My point is, whatever you do, you will have some kind of scaling of the image, since the image on the DVD isn't using square pixels, and the display is (useually). Instead of the endless search for 1:1 pixel mapping, wouldn't it be just as viable to deliver a pixel-perfect signal compared to the original material, giving the same result: only one scaling, instead of two? Of course, this requires that the scaling of the projector is as good as the scaling in the PC, but theoretically the end result would be the same, one direct scaling from the original 720x480 on the disc, to the resolution of the PJ. IF it's possible. Specifically, as I understand it 1:1 is MAYBE possible on the VGA input, but NOT possible on the DVI input of AE300. If this is the case, then transferring the original pixels, 720x480, via DVI and using the PJ's scaling would be the only way to have a fully digital signal path AND one, direct scaling.


IF its possible...
 

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You're going to have a lot more scalling than that :) Rember that the color informaiton is 1/4 resolution of the b&w information. So you're getting color signal scalling of 360x240i in addition to the horizontal scalling of b&w info to your projector's panels. There is no way you can avoid scalling.
 

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Hi there,

Seems like a complicated storry all together. Why not match the projecters native resolution and if you cant throu DVI then just use the VGA.

Have you ever compared the DVI verses VGA? By the way the best scaler would be in the computer not the projecter. Digital may sound better but its not always the case.


Cheers :)
 

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"Let's say you feed a 16:9 projector, say Panny AE300, with a 720x480 signal (1,5:1)from a HTPC. Would the projector then scale this image to fill the screen, stretching it to 16:9 or would it scale the image linearly, leaving black bars on the sides of an image with wrong proportions?"


Im sure the panny would scale to 780x520 on the projecter in 4:3 mode leaving black bars on the side. But then again you would only get a perfect picture it you use the projecters native resolution.
 
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