[opendtv] Rewriting history books WAS Re: 5th generation Test
- From: dmenolan <dmenolan@xxxxxxxxxxxxxx>
- To: Open DTV list <opendtv@xxxxxxxxxxxxx>
- Date: Tue, 15 Mar 2005 13:41:05 -0500
Hi John,
Ah yes. But Doug has not learnt the lessons of history and I still see Cr=
aig and Bert arguing about the same old things. Bottom line: they still h=
ave not shipped a working ATSC receiver with indoor performance to match =
1999 COFDM. Today there are nearly six million (now that would be 24 mili=
on in the States) DTV homes here. And how many ATSC units installed in co=
nsumer homes. Doug conveniently forgets the facts but the economics are t=
elling another story. As DirecTV announces plans to launch HD service nat=
ionwide using MPEG4/DVB-S2(that's the power of News Corp for you!) on the=
same day that Crown Castle announces a nationwide DVB-H system in the US=
. That's what I call leapfrog.
Bottom line with ATSC:
No industrialisation of proper RF performant receivers (all this stuff wa=
s sorted out in COFDM years ago. The papers I see by Charles Rhodes + col=
leagues are old hat in COFDM markets!)
STILL no working indoor antenna ATSC reception in tough RF environments i=
n consumer devices: TOO COSTLY!
Very low penetration of DTV
HDTV via satellite and cable holds sway: even more so with the DirecTv an=
nouncement.
Some very interesting questions are going to be asked when people compare=
the receivability of DVB-H with ATSC in the US. Pretty pictures are fine=
but the QoS needs to be very high and you pay.
I find it very interesting that the same old arguments are being run over=
and over again on openDTV: there appears to be no closure on this issue.=
There would be if it was a consumer success story: HD is but not ATSC.
The future belongs to the modern systems: MPEG4 HD, DVB-H and also to low=
cost terrestrial DTV systems which actually work here and now in $45 STB=
s. I am sure we will see the same old blasts from Doug and Bert: but hey,=
who cares? I have long since ceased to bother. The whole thing is a comp=
rehensive commercial catastrophe. Its better it fails, because the pieces=
can be picked up, and we can move on. Either OTA will die in the US, NTS=
C will continue, or a modern working system will be introduced. Of course=
I do envy the US because they have a clean sheet of paper and spectrum f=
or mobile TV is there and owned: that will be fascinating.
With weary regards and a distinct sense of deja vu for the nth time...
Dermot Nolan
-------------Forwarded Message-----------------
From: INTERNET:opendtv@xxxxxxxxxxxxx, INTERNET:opendtv@xxxxxxxxxxxxx
To: , INTERNET:opendtv@xxxxxxxxxxxxx
=
Date: 15/03/105 18:19 PM
RE: [opendtv] Re: 5th generation Test
=
Doug,
You know as well as I do that the COFDM box used in the MSTV tests was a =
wideband front end modulation monitor, and when it was used with a front =
end =
filter (as you suggested be done with Bob Miller's latest test unit) it =
performed very well. You also know that the COFDM unit outperformed the =
ATSC unit using indoor antennas at 6 feet, where the front end was less =
likely to be overloaded. It was the outdoor antenna performance that gav=
e =
the overall nod to the ATSC unit. Even then, the "angle of acceptance" w=
as =
in many cases 360 degrees for the COFDM unit, while it was 90 degrees or =
less at the same location for the ATSC unit.
You also know how well the 6 MHz modified Nokia boxes worked in the =
Baltimore area in 1999, which is not a benign RF environment.
And I take your comments comparing me to Mssrs. Miller and Nolan as a =
compliment. I refuse to rewrite the history of the 1999 Sinclair Baltimo=
re =
tests, and I still have my own personal experience with ATSC in my own =
office.
If you want to see how COFDM boxes perform in a very tough RF environment=
, =
please watch this video clip:
http://www.viacel.com/bob.wmv
Regards,
John Shutt
----- Original Message ----- =
From: "Doug McDonald" <mcdonald@xxxxxxxxxxxx>
> Uh, NO, since, as you recall, a COFDM box did abysmally badly
> compared to an ATSC box in the MSTV tests, since the COFDM box
> had a bad front end.
>
> The Euro STBs DON'T perform all that well RF-wise.
>
> You are getting to be just like Bob Miller and Dermot Nolan.
>
> Doug McDonald
=
=
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Subject: [opendtv] Re: 5th generation Test
Date: Tue, 15 Mar 2005 13:08:41 -0500
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