[opendtv] Re: Global standard

  • From: "Mike Tsinberg" <Mike@xxxxxxxxxxxxxx>
  • To: <opendtv@xxxxxxxxxxxxx>
  • Date: Mon, 30 Apr 2012 21:39:39 -0400

It's interesting. If you look towards progression of TV receiver technology
it's clear that TV's are more and more are able to play Video off the
internet {Smart TV's}. That means they are increasingly able to decode both
ATSC and Internet content. In that case and if FCC will open for H.264/265
it will allow broadcasters to send two HDTV streams into the same without
imposing new receiver designs. 

Best Regards,
Mike Tsinberg
http://keydigital.com




> -----Original Message-----
> From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-
> bounce@xxxxxxxxxxxxx] On Behalf Of Manfredi, Albert E
> Sent: Monday, April 30, 2012 4:53 PM
> To: opendtv@xxxxxxxxxxxxx
> Subject: [opendtv] Re: Global standard
> 
> Mike Tsinberg wrote:
> 
> > Can we fit two or more 1080i signals into that channel?
> 
> 
> The answer to that question is, "You can hope to fit two 1080i streams
> over a single 6 MHz channel a lot better if you DO NOT insist on the
> unnecessary IP overhead!"
> 
> What's nice about DVB-T2 is that it gets true spectral efficiency
> that's at least as good as 8T-VSB. Meaning, you can actually achieve
> better b/s/Hz at the same C/N margin requirement, as 8T-VSB. This is
> because they have gone to the low density parity check scheme.
> 
> Combine that with H.265 compression, and you have a good scheme for OTA
> broadcast.
> 
> BUT:
> 
> The question then is, do we really think this broadcast model has a
> future, or do we think that everyone wants to use VOD anyway, and that
> therefore optimizing for broadcast, optimizing for two 1080i streams
> per 6 MHz channel, and optimizing for few transmit towers, no longer
> makes any sense?
> 
> That's the issue. Perhaps your questions aren't the right ones to ask?
> Perhaps Mark Aitken's approach is more likely for the future, which
> means (IMO) that you accept lower spectral efficiency AND a very
> questionable role for most of the local broadcasters in the future?
> 
> Bert
> 
> 
> 
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