[opendtv] Re: BBC Demonstrates HDTV Broadcasts over SD Channels
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Thu, 23 Jun 2005 07:14:50 -0400
At 6:53 PM -0700 6/22/05, John Willkie wrote:
>let me figure out what I was talking about before I do any more correctin'.
>ISTR somebody had a DTV air date of October 17, 1994; I thought it was WRAL.
ISTR?
It stands to reason?
A reasoned person would know that this would have been virtually
impossible in the U.S.
http://www.atsc.org/history.html
"The prototype Grand Alliance system was built in a modular fashion
at various locations. The video encoder was built by AT&T and General
Instrument, the video decoder by Philips, the multi-channel audio
subsystem by Dolby Laboratories, the transport system by Thomson and
Sarnoff, and the transmission subsystem by Zenith. The complete
system was integrated at Sarnoff. Testing of the complete Grand
Alliance system started in April 1995 and was completed in August of
that year."
Perhaps John is thinking of the VSB testing that took place in
Charlotte in 1994.
The ATSC standard was not approved until Sepembert 16, 1995. The
MPEG-2 standard that it relies upon was not published until 1996,
although it was largely completed in 1995. Commercial encoders did
not appear in the marketplace until 1996 when the FCC approved the
ATSC standard (December 1996).
Regards
Craig
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