[opendtv] Re: Toward digital TV
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Thu, 15 Dec 2005 17:41:05 -0500
Barry Wilkins wrote:
> Kon,
> Exactly why then is HDTV being pushed in the USA? Especially
> when it has such an inflexible DTTV transmission arrangement.
My answer is that the sale of "flat panel" televisions, which
accounts for a healthy percentage of TV sales now,
simultaneously increases people's awareness of image quality.
People may not be screaming for the best possible HD, as Doug
does, but they are demanding more than SD or sub-SD quality.
I don't think DBS can compete unless it accommodates these new
flat panel owners.
When Dish and DirecTV wanted to merge, one of the arguments
they used was the spectrum needed for local into local and HD,
IIRC. It didn't fly, but at least it does show that they're
well aware of the spectrum crunch they face.
Not to say there won't be a constant battle between more
channels and decent quality. I just think the sweet spot has
moved toward better quality in each channel. Cable can provide
more b/s per channel.
As to "inflexible" DTT arrangement, as inflexible as it is, it
does favor HD. Because the inflexibility of 8-VSB is toward the
high end of the spectrum efficiency curve, not the other way
around.
The effort in 8-VSB is to make the scheme as robust as possible
while not reducing the b/s per channel. Conversely, the effort
in Euro COFDM plants is to increase the spectrum efficiency in
order to accommodate HDTV.
Bert
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