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Can your TV zoom / ARC when watching a digital signal?

1891 Views 8 Replies 6 Participants Last post by  Mike53
I've discovered that on my HDTV (a Sharp), if I'm watching a digital TV signal (e.g. ATSC) that is in HD, I can't zoom in like I can with the SD program.


Why would I want to? Here's the scenario. TV is using its tuner to pull in an OTA HD signal. The network is running a 4:3 SD program with side bars inside that 16:9 frame -- it's still SD, just upconverted to the 16:9 HD frame so they can just transmit in HD mode all the time. Now imagine that in that 4:3 SD, they are playing a 16:9 show LETTERBOXED within the 4:3 SD frame. Wide black bars on all four sides!


If I use the component input and send 480p from my DVD player, I can zoom in to my hearts content -- stretch, zoom, whatever. But if I'm looking at an OTA ATSC HD signal, and I suspect any digital signal like HDMI or DVI, I can't zoom in to overcome the problem described above.


Can anybody's TV zoom when given a digital HD signal?
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Most TVs made in the last few years can zoom and stretch an HD signal, but apparently some still can't.
Can you give me specific examples? Can yours?
Philips 42PFL7432 does (on SD and HD) an auto Zoom and also has manual zooms. I have an older Philips plasma 42 inch and it also does the auto and manual zoom.
Element FLX-1510 does not allow zoom on HD signals. Not directly applicable, but Sony PROJECTION e2000 series does.
Some 1366X768 HDTV's cannot zoom. Not sure why but all 1080P LCD HDTV's DO allow zooming and picture manipulation. From your sig I see you have a D43 series and that is 720P therefor cannot zoom. In that case you would use the cable box to adjust the picture. On Scientific Atlanta press the left arrow once and scroll down to picture and you have 3 or 4 adjustments to make.

Quote:
Originally Posted by Mike53 /forum/post/0


From your sig I see you have a D43 series and that is 720P therefor cannot zoom.

I was going to say "that's faulty logic, there's nothing intrinsic about a 720p set that would prevent the zoom", but I see that this is Mike53 talking so I'll bite my tongue
You probably meant that in the context of the Sharp model line.


Thanks all for the examples of sets that do zoom. Interesting to see that most sets that can zoom are 1080p sets. I don't think there's anything intrinsic about the 1080p that gives it the ability to offer/require zoom capability. Rather, the manufacturers are probably only putting this feature into their higher end sets, at least for now. Damn, I almost bought a Toshiba 37HL67 ...


Oh well, another feature with which to differentiate sets. Looks like I now have another thing I've been educated about looking for in my next set ...
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Quote:
Originally Posted by ChrisC47 /forum/post/0


I was going to say "that's faulty logic, there's nothing intrinsic about a 720p set that would prevent the zoom", but I see that this is Mike53 talking so I'll bite my tongue
You probably meant that in the context of the Sharp model line.


Thanks all for the examples of sets that do zoom. Interesting to see that most sets that can zoom are 1080p sets. I don't think there's anything intrinsic about the 1080p that gives it the ability to offer/require zoom capability. Rather, the manufacturers are probably only putting this feature into their higher end sets, at least for now. Damn, I almost bought a Toshiba 37HL67 ...


Oh well, another feature with which to differentiate sets. Looks like I now have another thing I've been educated about looking for in my next set ...

When I worked there, I asked the question and never got a satisfactory answer. I guess the processor or the panel just would not allow it without big expense. You can zoom on its antenna input but not on an HD input from a cable box. I suppose it sees an HD signal and thinks why would you want to zoom it. My LC26D4U won't do it but my LC52D92U will.
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