[opendtv] Re: PBS National Datacast
- From: "Albert Manfredi" <bert22306@xxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Sat, 25 Feb 2006 14:49:35 -0500
Richard Hollandsworth wrote:
>Excuse me if I've been a llittle confused. The below cited
>Moviebeam press release via Webwire says that Moviebeam
>is using National Datacasting technology. And the National
>Datacasting website says that they employ PBS's DTV
>stations, with no mention of the older dotcast technology
>on NTSC PBS stations.
Not quite accurate, on that last point, Richard.
http://www.pbs.org/digitaltv/dataNS.html
talks about "current services" and "the digital difference," in which
service over DTT "will begin" at some unspecified time. And "current
services" are obviously over analog, although only the VBI technique is
mentioned. So National Datacasting is somewhat agnostic about the physical
layer details.
I think it's basically what John Shutt "stands by," although I seriously
dount that PBS thinks Dotcast provides better coverage than ATSC can.
Bert
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