[opendtv] Re: Truthiness 2
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Thu, 23 Mar 2006 16:12:40 -0500
John Shutt wrote:
> Al,
>
> In your estimation, what did the DVB do differently from
> the ATSC?
Since Al didn't reply, I'll give it a shot.
DVB did two things differently, but I don't think either of these were
responsible for any measure of greater success in implementing DTT.
1. Similar to the ISO network protocol development effort of the 1990s,
they pulled together all interested parties into a big, professional,
standards development organization. As opposed to the IETF and their
rag-tag approach with Internet Protocols. The former approach is not
necessarily more successful, though, as IETF proved over ISO.
2. For DTT, DVB chose COFDM instead of a single-carrier scheme.
I don't think cable and satellite are any more successful in Europe than
they are here, so I don't think DVB (-C -S) were particularly key in
determining success of those media.
For DTT, I think the big difference is that the UK, France, and Italy
each have *an* organization with the X on its head to develop these
terrestrial plants. Whereas here, a lot of competing broadcasters, NOT
used to cooperating among each other, are expected to pull together a
viable terrestrial system. While they are still battling it out either
over analog terrestrial or piggy-backed on other media. (Meaning, their
focus is elsewhere.)
I am fairly positive that one big improvement in DTT deployment in the
USA would be to eliminate the national caps on broadcaster ownership of
terrestrial stations. At least then, individual networks would have an
incentive to build out viable national terrestrial networks. As things
are now, I think it's too fragmented for such a concerted effort. So FCC
regs will have to carry it through.
Bert
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