sagem hd45 and htpc

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can someone help just connected by old pc which has a ati 9800 with latest`drivers connected via dvi to my sagem hd45 ands cant get a full 1080i picture, can get 720 fine but not 1080. think its the refresh rates or something, have tried powerstrip but picture just flickers and doesnt fill screen. any suggestions.
 
ahh have just checked and native is 720 never realised. but it also says it does 1080i im a bit confused can anyone explain
 
Well mine works perfectly with 1280 by 720p, its quite an old set so i wouldnt be surprised if it can do 1080 tbh, I think the dvi port is HDCP thankfully.
 
I dont get it, why do you want 1080 when the telly cant do it, native res is 1280*720p.
 
want 1080 so its a better picture, and to get the full benefits of blu ray when i add a drive. dont see the point spending good money to only display at 720. the tv does support 1080 according to the manaul and reviews thats what i dont undertand
 
You are getting yourself confused here, in the manual the native res is 1280*720, whether or not it supports 1080i is neither here nor there, anything over the native res means that the screen is not giving the optimal output.

720P is still pretty damn good, its only the top lcd's and Plasma's that natively support 1080.Blueray still looks damn good.

Basically what im saying is that even if you get the screen setup at 1080 it wouldnt look better, as its not a 1080i 'projector' inside, any 1080i capability would be done via processing which makes the pic look worse.
 
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aww im with you, so the pitcure only does 720p but with some processing it does 1080i but the picture displayed is not really any better. cheers for that.

may wait till i can afford to get a full hd lcd then and will buld a htpc then.
 
I shall give you my example.

My projector is 720p.
81" screen.
I use a PC to output video to the PJ.
I use ffdshow filter, which allows me to scale video to any resolution that I choose.

When I switch from 720p to 1080p output, it makes no difference to my eyes; and thats when you consider that my screen is much bigger than yours, hence any changes will be more pronounced on my screen than your smaller screen.

The key here is that my PJ and your TV have native resoultions of 720p, hence, in both cases are being scaled to a 720p resolution by the PJ (and in your case, the TV). Hence, this would explain why I cant see any difference.

In theory, if I had a a video whose resolution was 10000000x10000000, the PJ would have to downscale it to 720p once it receives the video stream, as that is its native resolution.

In summary, if you managed to get 1080i to register on your Sagem, it probably wont look any different to the 720p image you are seeing right now. And like others have said, 720p is pretty damn good. If it looks sharp on my 81" screen, it should look even sharper on your 45" screen.

From research (I was considering buying a Sagem DLP at one stage, but decided to go the PJ route as it offers better value for money), your Sagem telly (if it isnt broken), offers fantastic images on 720p feeds. I actually preferred the image quality of your Sagem to the much lauded Sony 55" SXRD Rear Projection set.
 
ok sunama thanks for the in depth response. i think i understand what your saying. ok youve got me thinking again about making a htcp, i guess i just expected to display 1080 without problems. cheers
 
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