[opendtv] Re: Which Modulation Would You Choose on a really bad day?
- From: John Willkie <johnwillkie@xxxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Fri, 22 Sep 2006 13:39:02 -0700 (GMT-07:00)
So, you now have an excuse? a rationalization?
Why is it obvious that Mexico and Canada have to use the U.S. system? Does
Mexico have to have the same region coding for DVDs that the U.S. has? (It
doesn't)
Does Canada have to have the same DBS system that the U.S. uses? (They don't,
and have made it illegal for Canadian systems to be shipped to the U.S. and
vice-versa.)
Australia is definitely a COFDM outlyer. By the way, if I buy an Australia
HDTV system, will it receive HDTV when I move it to the U.K? Will it be able
to process MPEG-2 audio? Australia, to draw the important distinction, is the
only COFDM country where the government doesn't distort the media marketplace,
or where the privatization of media happened in the recent past.
Yes, COFDM works in mobile environments. So will Super-8 film. It's just
unlikely to be a profitable service in the near or medium term because eyeballs
away from home are seldom free to watch a video screen for more than a few
minutes per day. This is not to dis mobile digital media (audio and data
services) just the stupid video-centric ones.
Ah, HDTV on satelite. That's the canard. There's more HDTV on satellite on
either of the U.S. DBS systems than in the rest of the world. I haven't
checked Sky Mexico recently, but they can't be far behind. Nor StarExpress and
ExpressVu in Canada.
If I'm not mistaken, there's more people in S. Korea watching HDTV via IP
networks than watch Japanese and European HDTV satellite services.
It's all about free media markets, not modulation. Nobody watches modulation:
they watch content, and the wider and deeper the selections, the better. The
menu isn't very deep or wide in countries with less than free media
environments.
So, to sum it up. Mexico, a third world country where only a single city
(Monterrey) arguably has drinkable water on tap, offers more terrestrial HDTV
services than all COFDM countries save Australia. Combined.
COFDM -- at least for the moment -- equals the third world of terrestrial
digital media. Or worse.
John Willkie
P.S. I don't particularly care which modulation is used. I look for deep and
wide selections, and sustainable systems.
-----Original Message-----
>From: Ian Mackenzie <ian@xxxxxxxxxxxxxxxxx>
>Sent: Sep 22, 2006 2:45 AM
>To: opendtv@xxxxxxxxxxxxx
>Subject: [opendtv] Re: Which Modulation Would You Choose on a really bad day?
>
>Obviously Mexico and Canada have to use
>whatever the US chooses.
>
>Basically the USA and S.Korea are the
>only takers for ATSC
>
>As to HD there are 5 networks with over 80
>Stations transmitting full time HD in Australia.
>They have been for some time and more are coming
>On line all the time. (not counting translators,
>repeaters and gap-fillers).
>
>HD on satellite in Japan and Europe is also something
>That's been operating for some time.
>
>One doesn't have to give excuses as to whether COFDM
>will work in mobile or handheld, city, suburban or
>urban environments, it just does.
>
>-----Original Message-----
>From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx]
>On Behalf Of John Willkie
>Sent: Friday, 22 September 2006 2:28 PM
>To: opendtv@xxxxxxxxxxxxx
>Subject: [opendtv] Re: Which Modulation Would You Choose on a really bad
>day?
>
>falta: (WRONG)
>
>ATSC countries (actually transmitting, as we speak) U.S.A; Canada
>Mexico, S. Korea. NO COFDM. Taiwan (not exactly a country) is an ATSC
>country, but I don't think they're doing much 8-VSB there.
>
>That's -- depending on how you count -- four or five ATSC countries.
>With the exception of S. Korea and Taiwan, they're also countries where
>the government doesn't control most (or everything) in media.
>
>not a mere coincidence, I'd say.
>
>There are more commercial HDTV stations operating in Tijuana, Mexico
>today than there will be testing facilities in Paris in short order.
>More HDTV stations in Tijuana, Mexico than there are in all of Europe.
>That is, there are two, with a third in short order. And, they've only
>just begun on the 18 year transition to digital in Mexico. (There are
>other DTV stations in Mexico.)
>
>John Willkie
>
>-----Original Message-----
>>From: Ian Mackenzie <ian@xxxxxxxxxxxxxxxxx>
>>Sent: Sep 20, 2006 8:29 PM
>>To: opendtv@xxxxxxxxxxxxx
>>Subject: [opendtv] Re: Which Modulation Would You Choose on a really
>bad day?
>>
>>If I wasn't having a bad day before choosing ATSC I Certainly would be
>>afterwards.
>>
>>The whole world except 2 countries uses COFDM in one form or another
>>for DTT.
>>
>>Can't you see who's out of step Doug?
>>
>>-----Original Message-----
>>From: opendtv-bounce@xxxxxxxxxxxxx
>>[mailto:opendtv-bounce@xxxxxxxxxxxxx]
>>On Behalf Of Doug McDonald
>>Sent: Thursday, 21 September 2006 7:06 AM
>>To: opendtv@xxxxxxxxxxxxx
>>Subject: [opendtv] Re: Which Modulation Would You Choose on a really
>>bad day?
>>
>>To reply to the subject line,
>>
>>I would choose whichever system gave the most bits at with the least
>>problems with digital into digital co-channel and adjacent channel
>>interference.
>>
>>This chooses ATSC over DVB-T.
>>
>>The reason is simple. A really bad day is one in which tropo ducting is
>
>>strong. This fairly frequently causes, where I live, bad adjacent
>>channel interference and more rarely co-channel. The 3 dB interference
>>advantage of ATSC can really help.
>>
>>Doug McDonald
>>
>>
>>
>>
>>
>>
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>
>
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