[opendtv] Re: NHK demos UHD TV broadcast
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Tue, 30 May 2006 11:14:29 -0400
Tom Barry wrote:
> But that is 19 MHz based upon what they can do now, using
> banked MPEG-2 encoders. You can likely cut that in half
> for AVC/VC-1 and then proceed to tune a bit over the years
> before this ever becomes real. I see no reason to think
> we've come to the end of advances video compression
> technology.
>
> So I'm not sure it is all that improbable.
I don't think the 2:1 improvement is going to cut it. The 19 MHz assumes
a very high SNR and is the Shannon limit, so AVC is not the answer bu
itself.
To me, this is history repeating itself. The original HDTV schemes did
not succeed, because they were not compatible with TV distribution
channels then in use. It took MPEG-2 compression to make HDTV compatible
with 6-8 MHz channels in practical systems, and as soon as that
happened, HDTV became reality.
Similarly, I think it would take an analogous new image compression
algorithm to make UHD reality for television broadcasts, assuming that's
what is intended for UHD.
If it's just meant for movie theaters, then of course that's a different
matter.
Bert
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