[opendtv] Re: --FCC OKs WiFi between TV channels
- From: "John Willkie" <jmwillkie@xxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Fri, 28 May 2004 10:53:25 -0700
Since it's been more than 19 years since I tasted alcohol, I suggest that
you look elsewhere for what you perceive as my error.
Also, any paragraph that starts off with "The display is decoupled from the
source..." is a paragraph that I won't read further. You see, you first
have to explain why/how the coupling occured in the first place.
When I watch ER on a 4:3 set, how is the 16:9 content coupled to my set?
(It ain't, the way you "think" about it.)
And, it appears to me, that an NTSC set attached to an ATSC STB is VIRTUALLY
the same as a 4:3 "HDTV" set showing the same content. What would be the
difference while watching ER? Does the NTSC set have lower effective
resolution? (I'd tend to doubt it.)
John Willkie
-----Original Message-----
From: opendtv-bounce@xxxxxxxxxxxxx
[mailto:opendtv-bounce@xxxxxxxxxxxxx]On Behalf Of Craig Birkmaier
Sent: Friday, May 28, 2004 7:17 AM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: --FCC OKs WiFi between TV channels
At 7:49 PM -0700 5/27/04, John Willkie wrote:
>I find it hard to believe that a 4:3 set actually is HDTV, since the only
>HDTV table 3 formats are 16:9. What makes these sets qualify? Because
they
>can handle MP@HL video? Then, why not display HDTV content natively?
>
Too much Tequila John? You really are off the wall today.
The display is decoupled from the source in Digital TV. All sets must
accommodate all ATSC formats, as well as legacy 4:3 525 line sources.
Thus by default, any screen (aspect ratio) will have some unused
areas if the source is displayed accurately (some sets fill the
screen by distorting or cropping the source. What's more, no
lithographed display can display all formats natively, unless you
want them to be presented in windows (i.e. 640 x 480, 854 x 480,
1280 x 720 and 1920 x 1080); image scaling is a prerequisite for any
ATSC conformant display.
Let's say the display is based on a lithographed technology with 1280
x 1024 samples (a common workstation format with a 1.25:1 aspect
ratio). If you prefer, we could use a 1600 x 1200 panel that is 4:3.
Now tell me that these displays are incapable of using a 1280 x 720
subset to display HD properly...
Regards
Craig
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