[opendtv] Re: Frames Per Second of 720P
----- Original Message ----- From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx> 


"The report wrote:

> (b) there is no provision in the proposed ATSC standard for
> auto-selection logic to have the DTV tuner default to the M/H DTV signal
> only when the main DTV signal is not available.236 Therefore, at
least for
> the period of consideration used in this report (2008-2012), laptops
are not
> considered a M/H DTV business opportunity for broadcasters (but do
> constitute an audience-expanding opportunity for the main DTV signal
> which, in turn, could augment broadcaster advertising revenues)."


Doe anybody understand this one?  I don't see it essential to be in the
 standard as, first, there are yet no dual M/H laptop receivers and,
second, a laptop receiver is probably software driven and could easily
add this option if it seemed it would sell.  Finally, even a very stupid
user could probably decide to change to another (M/H) channel if the
full channel could not be received.  I'd personally rather be in control
of the process."
The statement by the authors assumes that programming in the M/H channel is simply a simulcast of programming in the main channel. If this were the case, then this could also provide a low quality 'graceful degradation' for fixed receivers as well. 

John





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