[opendtv] Re: People DO watch LPTV
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Tue, 1 Apr 2008 13:43:04 -0400
At 11:08 AM -0400 4/1/08, Manfredi, Albert E wrote:
You're such a broken record, Craig.
Ditto's Bert!
Did you pay attention to the New Zealand DTT standard? No? Maybe you
should.
Why? What is the relevance for our market. They have a standard that
can reach nearly everyone in New Zealand, and thanks to their
patience, they are able to leapfrog most of the early deploying
countries with H.264. And if Mobile becomes an issue for them - and
it will - all they need to do is use a different constellation that
will work with all receivers.
Just like here, they standadize on HDTV. Which means, every receiver
must be compatible with HD signal streams, which avoids the need to
simulcast.
You sure are hung up on this simulcast issue. It's kinda funny,
considering the reality that simulcasting is a way of life here in
the U.S. We have and will continue to have analog cable, and for MANY
markets, the DBS operators will continue to offer SD, not HD locals,
at least until they have the capacity to do HD.
That a DTV receiver should be able to deal with multiple formats is
not the issue. Any new system can and will do this. And those
countries that launched early with SDTV will have the advantage of
deploying not only h.264 but other improvement that will support SFNs
and mobility.
Funny, no one is complaining about that. But you sure did complain about
that when the ATSC did this, over a dozen years ago.
I did?
Perhaps what you are viewing as complaints was really just my opinion
that we could have deployed a scalable system that would support
various levels of receiver complexity?
They use 64-QAM, 3/4 FEC, 1/16 GI. As close as you can get to 8-VSB
spectral efficiency, and not particularly good for SFNs. Is anyone
moaning about that? Nope.
Once AGAIN you keep trying to set the bar for spectral efficiency in
terms of bits per Hz. The real measure of spectral efficicency is
the level of service(s) that can be deployed. We got the worst of
both worlds here:
1. Poor spectral reuse, which limits the channels available in most
markets. particularly those in close proximity to other markets.
2. A MAJOR penalty to ADD support for Mobility and portable use which
will make your bits per Hz measure of efficiency look rather pathetic.
Oh, and indoor reception works fine with 8-VSB, and has done so since
the 5th gen receivers came out. That was 2003.
Pardon my french, but BULL! This is entirely dependent on signal
strength, receiver location and building structure. Sorry Bert, but
you need to read the note with the asterisk *actualy milage may
vary...
The difference is, when
indoor reception is not perfectly reliable in COFDM countries, people
put up an outdoor antenna and move on. Like Jeroen did, for instance.
Over here, you have to hear all manner of moaning and whining.
If the person can put up an antenna, or even desires to do so. And we
still get many reports of locations where even this is problematic.
The reality is quite simple and obvious. With analog, indoor
reception may have been less than perfect, but a set with rabbit ears
was expected to provide some level of service. With VSB rabbit ears
have disappeared from the Consumer Electronics landscape.
And once again, each country is different. Broadcasters here care
only about the quality of signal they deliver to cable and DBS, and
the checks they get in return.
Regards
Craig
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