LCDs and 1080i vs 720p quality of picture question

[JB1981]

I was thinking about getting a 1080p LCD (possibly the 42in Spectre), I currently have the Denon 1920 with HDMI upsampling to 720p or 1080i. My question is since the native resolution of the Spectre is 1080p, would a 1080i signal look worse than a 720p signal on a 720p set? If thats the case I'll just get a better 720p set (currently have a proview 32) Sure theres more lines of info, but wouldnt a interlaced signanal on a LCD be distracting (depending on the responce time), especialy on smooth panning shots?

Thanks All

JB

 

[MDS]

An LCD TV is progressive scan by nature and thus a 1080i signal will be deinterlaced to 1080p for display. A 720p signal is already progressive but will have to be scaled from 720 to 1080 for display.

So, does the TV do a better job of deinterlacing 1080i for display as 1080p or does it do a better job of scaling a 720p signal to 1080p? Deinterlacing 1080i to 1080p involves no scaling so may look slighly better than a scaled 720p signal but most likely you won't notice any significant difference between either.

 

[ht_addict]

I was thinking about getting a 1080p LCD (possibly the 42in Spectre), I currently have the Denon 1920 with HDMI upsampling to 720p or 1080i. My question is since the native resolution of the Spectre is 1080p, would a 1080i signal look worse than a 720p signal on a 720p set? If thats the case I'll just get a better 720p set (currently have a proview 32) Sure theres more lines of info, but wouldnt a interlaced signanal on a LCD be distracting (depending on the responce time), especialy on smooth panning shots?

Thanks All

JB

Set your DVD player to 1080i and leave it at that.

 

[JB1981]

An LCD TV is progressive scan by nature and thus a 1080i signal will be deinterlaced to 1080p for display. A 720p signal is already progressive but will have to be scaled from 720 to 1080 for display.

So, does the TV do a better job of deinterlacing 1080i for display as 1080p or does it do a better job of scaling a 720p signal to 1080p? Deinterlacing 1080i to 1080p involves no scaling so may look slighly better than a scaled 720p signal but most likely you won't notice any significant difference between either.

Thanks for the info. I didnt quite explain my question right though. I was really wondering if a 1080i signal on a 1080p LCD would look better than a 720p signal on a 720p LCD. I figured that the DVD player would only really be faking in more lines of information on 1080i than 720p from the original 480p recording, and it seems like the picture would be best if there is only 1 upconversion happening (480p to 720p for a 720p TV) rather than 2(480p to 1080i (Max the DVD player will upconvert)then 1080i to 1080p by the tv)

Maybe I am reading into all this too much and it really doesnt matter.