[opendtv] Re: --FCC OKs WiFi between TV channels
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Sun, 30 May 2004 18:47:19 -0400
Craig Birkmaier wrote:
> First, you are probably watching an NTSC broadcast of ER which is not
> transmitted in 16:9. But let's assume you have a DTV receiver and are
> watching an HD broadcast where the source is 16:9.
Ah, but it is. We went through this some time ago. ER, Crossing Jordan,
Enterprise, and a few other shows from NBC and UPN, are in fact
broadcast in 16:9 over their NTSC feed. Even though the typically
overscanning NTSC sets make it appear somewhat less than that.
Remember that thread? Depending on the receiver, we measured anything
from 14:9 to 16:9 on any given show. The receiver made the difference,
*not* the show.
> With the DTV receiver, the source is decoded producing an HD raster=20
> in the display buffer. The receiver then creates various outputs=20
> which can be connected to different display types.
All you really need for infinite flexibility is a digital receiver.
The program stream can be NTSC or anything else. It's the digital
receiver that allows this "decoupling" to take place.
However, even with all analog transmit-receive chain, the aspect ratio
of the NTSC feed can be anything the broadcaster wants. The only
reason broadcasters usually stick to 4:3 is that they know most sets
out there are 4:3, and that people prefer the screen real estate to
be used completely. With DTV, that same general concern will remain,
in spite of any purported "decoupling." Since HDTV productions are
almost exclusively 16:9, this is where the displays are migrating to
as well. In that sense, everything is just as "coupled" as it ever
was.
Bert
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