[opendtv] Re: Mobile DTV test

But, a big *if* in this is whether (or not) a minimum performance 
requirement gets established that ensures ALL receivers can receive. The 
nature of the physical front end is extremely important. I will concede 
that Zenith, LINX (and others?) have a good handle on what is required 
for equalization (does that surprise anyone?). WHAT is NOT so well 
understood are the other front end issues (selectivity, sensitivity, 
AGC, overload, multichannel performance (IM), etc...) that are just as 
important, and the negative impact of not dealing with the resulting 
performance degradation. Many (most) of the receivers on the market 
today are married to front ends that perform in a cable environment but 
DIE in the real world terrestrial environment that will exist until the 
transition is over. It is a very real problem, and it is NOT being 
adequately addressed.
So, simply for the sake of argument, let us say that 8VSB equalization 
issues will be solved to the majority interests of Broadcasters. Then what?

Manfredi, Albert E wrote:

>Frank Eory wrote:
>
>  
>
>>The rest of the AVS Forum post says it will be Thomson=20
>>product, it will receive "difficult" signals 85% of the time=20
>>vs. current chips that supposedly only receive difficult=20
>>signals 18-50% of the time and cost will be "the same as=20
>>current chips." I'm quoting the poster, and have no idea=20
>>whether this is accurate info from Linx.
>>    
>>
>
>That seems to be a direct quote from the Linx test results in
>Wash, Balt, and Phila not long ago. They managed to achieve 85
>or 87 percent success overall, with a dipole, at 6' height, in
>a van, in areas with lots of high-rise buildings, and without
>reaiming the antenna after receiving the first station. In DC,
>they used Rosslyn, an office high rise district. In Balt,
>downtown just North of the Inner Harbor area. And in Phila,
>Center City.
>
>The fact that it doesn't cost more than the competition was
>predictable, because it doesn't use anything more advanced
>than the competition, in terms of hardware. The art was
>apparently in assigning the equalizer taps.
>
>  
>
>>I wonder if there will be a market for standalone demod/FEC=20
>>chips in 2005? There are guys out there who already have=20
>>DTV-on-a-chip today -- demod/FEC, MPEG2 video, NTSC video &=20
>>audio, Dolby audio, graphics, microprocessor, etc. I don't=20
>>know what they cost, but clearly the value of each IP block=20
>>is dropping fast as the integration level increases.
>>    
>>
>
>Presumably, someone including Linx could produce a chip with
>higher integration, in which this 8-VSB front end or an even
>better solution (one which uses the training sequence, for
>example) could be part of the package. I'll stick with my
>prediction that by 2007, *if* all continues on schedule with
>the transition, we'll see ATSC tuners built-in costing in
>the $30 to $35 range, and stand-alone STBs at or under $100.
>
>Bert
> 
> 
>----------------------------------------------------------------------
>You can UNSUBSCRIBE from the OpenDTV list in two ways:
>
>- Using the UNSUBSCRIBE command in your user configuration settings at 
>FreeLists.org 
>
>- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word 
>unsubscribe in the subject line.
>
>  
>

-- 

Regards,
Mark A. Aitken Director, Advanced Technology

***********************************
Sinclair Broadcast Group
10706 Beaver Dam Road
Hunt Valley, MD 21030
Business TEL: (410) 568-1535
Business MOBILE: (443) 677-4425
Business FAX: (410) 568-1580
E-mail: maitken@xxxxxxxxxx
Text PAGE: page.maitken@xxxxxxxxxx
www.newscentral.tv
www.sbgi.net
===================================

"War is an ugly thing, but not the ugliest
of things.  The decayed and degraded state
of moral and patriotic feeling that thinks
that nothing is worth war is much worse.  
The person who has nothing for which he is
willing to fight, nothing which is more
important than his own personal safety,
is a miserable creature and has no chance
of being free unless made and kept so by
the exertions of better men than himself."

~ ~ ~ John Stuart Mill ~ ~ ~

CONFIDENTIALITY NOTICE:

The information contained in this e-mail is legally privileged and
confidential information intended only for the use of the individual
or entity to whom it is addressed.

If the reader of this message IS NOT the intended recipient,
you are hereby notified that any viewing, dissemination, distribution,
or copying of this e-mail message is strictly prohibited.

If you have received and/or are viewing this e-mail in error,
please immediately notify the sender by reply e-mail, and delete
this e-mail from your system.
***********************************




 
 
----------------------------------------------------------------------
You can UNSUBSCRIBE from the OpenDTV list in two ways:

- Using the UNSUBSCRIBE command in your user configuration settings at 
FreeLists.org 

- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word 
unsubscribe in the subject line.

Other related posts: