[opendtv] Re: Kennard and Powell to the rescue
- From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Sun, 11 Jan 2009 16:10:46 -0800
Funnies. What is this 1 mb/second stream going to create? File downloads?
Audio-only services? Presentation Graphics?
You are ignoring three obvious things: 1) m/h is simply a candidate
standard; there is no guarantee it will become a standard, and even if it
does, it may not be in the current form; 2) there is significant overhead
involved anytime one moves to offer m/h services, and I doubt anybody will
be happy with video+audio offered in a 1 mb/second tranche; 3) all people
have to do to take advantage of m/h at home, assuming it becomes a standard,
is to throw out your current television set and settle for low-quality video
on an high-quality set.
You live in a very odd place. And, you only see upsides with m/h. I see it
virtually impossible to offer 1080i in the same transport stream as
significant m/h service(s). 720p seems like it might co-exist, aside from
momentary hiccups. I think it's most likely that non-HDTV content will be
offered in the main service.
Also, I think it will come out that many broadcasters offer m/h services
using transmitters owned by others.
Your viewpoints on this aren't much different than hoping that color
television will improve black and white pictures. How did that one work
out?
John Willkie
-----Mensaje original-----
De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En
nombre de Manfredi, Albert E
Enviado el: Sunday, January 11, 2009 3:45 PM
Para: opendtv@xxxxxxxxxxxxx
Asunto: [opendtv] Re: Kennard and Powell to the rescue
Cliff Benham wrote:
> No matter what the fault is, what we have is a "replacement"
> system that does not work as well as analog NTSC in conveying
> information.
Sometimers that's true, other times it works better than the analog, so
overall the new service is best characterized as "different," IMO.
To restate the obvious, analog is so variable in quality that what one
persons deems acceptable another person would never accept. That's one
problem. And IMO, even in the best of circumstances, even for those one
or two best stations in the market, NTSC quality was antedeluvian.
And that's not all. I've tried analog reception many times now, with my
new receive antenna location, mostly to convince myself that the
stations returning to VHF will still be viewable after 17 Feb. No way
could I live with this setup if I had to rely on analog TV. So how could
I agree that ATSC reception is not as good as NTSC? I can't.
And even ultimate robustness is no longer the sole province of NTSC. Now
that we have the M/H candidate standard, it would be feasible to
recreate that feature also for DTV. Low quality image reception, but
reception nonetheless, when conditions deteriorate badly. Take away as
little as 1 Mb/s of the main channel, hardly noticeable to regular
viewers, and supply a robust stream of the main program channel. Useful
for mobile users and POTENTIALLY, if CE types do what's right, also for
home users.
Bert
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