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Posted by Barry Watzman on 01/17/07 14:51
Re: "n SD signal upconverted to HD resolution would read as an HD signal
coming into your TV"
That's correct, of course.
Re: "If you really believe that the nightly news isn't an upconverted
signal, why don't you call your local station, ask for the technical
engineer, and ask?"
The local station engineer wouldn't know. It's a network transmission
(NBC, in this case). I'd have to go back to the Network studio in NYC
where the program originates.
But consider:
1. I think that NBC advertises that their nightly network news cast is
now in HD (although I have to admit that I can't find it).
2. It's inconceivable at this point that NBC's major corporate studios
at Rockefeller center in NYC are not fully equipped with digital HDTV
cameras as the origination imaging devices. Of course, any form of
digital or analog signal could then be produced and transmitted from
their output. But the cable system here has two distinct channels for
NBC (and all of the other major networks), and the channel in question
is the HDTV digital channel. My guess is that they start with a digital
signal, and DOWNCONVERT when analog is required, rather than starting
with an analog signal and upconverting.
Joshua Zyber wrote:
> "Barry Watzman" <WatzmanNOSPAM@neo.rr.com> wrote in message
> news:45adb90f$0$8976$4c368faf@roadrunner.com...
>> There is a HUGE and real resolution difference between these signals,
>> the width of the image not withstanding. It's much more than just
>> analog vs. digital, or absence of analog noise. I wish that the TV
>> set would tell me what resolution and refresh rate was being used, but
>> it doesn't. However, it's not just "up converted analog".
>
> An SD signal upconverted to HD resolution would read as an HD signal
> coming into your TV. The TV has no way of knowing whether the signal was
> originally 1080i or was 480i upconverted to 1080i. All it sees is 1080i.
>
> If you really believe that the nightly news isn't an upconverted signal,
> why don't you call your local station, ask for the technical engineer,
> and ask?
>
>
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