I've prepared a lengthy response that might be appropriate to this, but let
me make sure it addresses what you are alluding to.
Is the "wording issue" changing the text in A/65 to permit packets with PSIP
sections to contain adaptation fields?
John Willkie
----- Original Message -----
From: "Mark Schubin" <tvmark@xxxxxxxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Saturday, April 21, 2007 5:51 AM
Subject: [opendtv] Re: LG launches 6th gen ATSC digital TV broadcast
receiver chipset
Something a knowledgeable third party referred to. No engineering
difficulty with A-VSB and PSIP, just a wording issue.
TTFN,
Mark
John Willkie wrote:
Mark;
Are you alluding to the A-VSB proposal requiring all packets (including
those with PSIP) having adaptation fields?
John Willkie
----- Original Message -----
From: "Mark Schubin" <tvmark@xxxxxxxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Friday, April 20, 2007 2:15 PM
Subject: [opendtv] Re: LG launches 6th gen ATSC digital TV broadcast
receiver chipset
Manfredi, Albert E wrote:
Mark Schubin wrote:
Hype is hype, even if the product being hyped is actually good.
There's a difference between hype and FUD.
The FUD a few short years ago was that if a "tuner mandate" was to be
established, the result would be that CE manufacturers would
incorporate
the cheapest possible, poor performing receivers just to meet the
mandate.
What makes you think they haven't? LG engineers brought a
"5th-generation" prototype STB to my apartment in mid-2004. It
successfully received all DTT channels reliably via a set-top antenna.
No receiver that has been brought to my apartment since then has been
able to do so.
If performance can be improved while reducing the cost of the final
product, that's obviously the road the manufactuers will take.
And, if the cost of the product can be reduced still further by
reducing
quality, that's another road manufacturers often take. Those who've
shot HDTV for a long time say the highest picture quality was with the
1-inch-format Sony HDC-500 and Canon HV12x12 lens. HDTV cameras and
lenses have gotten smaller, lighter, and less expensive with 2/3-inch
models, but they haven't gotten higher in quality; instead, they've
gone
lower (and lower still with 1/2-inch and 1/3-inch models).
As for hype and FUD being different, perhaps you're right; I just
noticed both being exuded in the service of MPH at NAB in Las Vegas,
where it was implied that A-VSB couldn't do a single-frequency network
(they demonstrated it), had lower throughput (as demonstrated at NAB,
it
had higher), and couldn't handle PSIP (as a result of an easily changed
phrase in the standard).
TTFN,
Mark
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