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Question re: 1080i vs. 780p

xfilerguy
03-14-2005, 02:34 PM
Hello,
I recently bought a Mitsubishi WT42315 HD 1080 tv. It has two component inputs and 1 DVI input.

I signed up for DirecTV and am getting the Samsung receiver. My question is what happens with the ABCHD and ESPNHD and FOXHD that is only broadcast in 780p? If my TV does not support 780 progressive, will I be unable to watch HD on these channels -- will it come in SD? I read something that the receiver will change the format from 780 to 1080 so I can see it....is this the case? Will the picture quality be less, since you cannot add lines of resolution (i.e., if a broadcast only has 780, you cannot get 1080 out of it. If not, did I waste money on a TV that only supports 1 HD format instead of both of them?

Thanks,
Lee

bryan92
03-14-2005, 02:36 PM
You will get a more detailed answer soon but right now, yes. It will upconvert the 720 to 1080 and you will not be able to tell a difference.

RSawdey
03-15-2005, 09:50 AM
It's you receiver's job to convert all of the 18 ATSC formats into the one your display supports. Cross conversion of 720p to 1080i or vice versa for display on a device of the alternate format gives a compromise intermediate... something percieved as similar to 720i30 which is still decent. Ideally, the new 1080p60 displays can upconvert both res'es without dataloss, preserving both the higher spatial res of 1080i and the higher temporal resolution of 720p.

fishboy
03-15-2005, 03:48 PM
It's you receiver's job to convert all of the 18 ATSC formats into the one your display supports. Cross conversion of 720p to 1080i or vice versa for display on a device of the alternate format gives a compromise intermediate... something percieved as similar to 720i30 which is still decent. Ideally, the new 1080p60 displays can upconvert both res'es without dataloss, preserving both the higher spatial res of 1080i and the higher temporal resolution of 720p.

Translated into english... "You don't need to worry. You're fine with your new TV and you probably won't notice the difference."

>>Sorry RSawdey - I couldn't help but bust your chops a little with that answer of yours. ;-)

xfilerguy
03-15-2005, 05:28 PM
Thanks for the replies! It seems like I'll be set!

Now if Goodguys would just get my stupid receiver in stock, I'll be all set. FYI - Goodguys pricematched online offer of $150 for the Samsung HiDef DirecTV receiver and the rest of my system (1 DirecTV DVR w/TIVO, 2 regular receivers and the triple Dish) was free after rebate. It was a pretty good deal! Can't wait to hook it up to my TV, as my current programming choices are limited to over-the-air sd tv.

laguna
04-24-2005, 10:38 AM
Is it possible to add a 2nd hard drive to this unit to increase the capacity like you can with the standard DVR?

fishboy
04-24-2005, 01:44 PM
Is it possible to add a 2nd hard drive to this unit to increase the capacity like you can with the standard DVR?

Don't know if it is officially sanctioned or not, but I did it using www.weaknees.com (http://www.weaknees.com). There's another company callled www.ptvupgrade.com (http://www.ptvupgrade.com) that (I think) is just as good. Read their websites. They offer a lot of good info on what and how to upgrade your DirecTivo. But remember, if you do it, you will void the warranty. So, be warned.