[opendtv] Re: New Chips Improve Color TV Dramatically

Thanks Bert, spot on.

----- Original Message ----- 
From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Tuesday, June 29, 2004 10:56 PM
Subject: [opendtv] Re: New Chips Improve Color TV Dramatically


> If I were a visitor from outer space, and a human told me
> that his birth date was 1 year different from that of the
> human standing next to him, this information would mean
> little to me, the alien.
>
> So I would probably ask what that meant.
>
> And the human would say something like, "The lifespan
> of a human is about 80 years or often more, so 1 year
> means we are roughly the same age."
>
> If, on the other hand, the object of age differences
> were two hamsters, my human host would explain that the
> difference of one year means a lot. Hamsters often live
> about 2 years.
>
> What Jeroen and Alan are saying is that the numbers in
> the table Jeroen posted, in any conceivable way they
> are used, show that the differences are perceptually
> insignificant.
>
> The numbers themselves don't say that, just as the
> relative age of two people or two hamsters doesn't by
> itself mean anything to someone who isn't familiar
> with the human or hamster lifecycles, but point is,
> both Jeroen and Alan are telling us that these numbers
> show insignificant differences.
>
> Bert
>
>
> Mark Schubin wrote:
>
> > Sent: Tuesday, June 29, 2004 4:37 PM
> > To: opendtv@xxxxxxxxxxxxx
> > Subject: [opendtv] Re: New Chips Improve Color TV Dramatically
> >
> > I'm not sure there's much more value in pursuing this, but
> > I'll take one
> > final crack.  If, on a scale of tens of millions of years, I plot the
> > rise and demise of dinosaurs, that's pretty common.  If, on the same
> > scale, I plot the birth of every person on this list, they will all
> > occupy a point at essentially the same coordinate.  But we
> > were not all born at the same time.
> >
> > Similarly, the CIE x,y coordinates are useful for many
> > purposes but are
> > not ideal for identifying perceptually different color
> > primaries.  Once
> > again, I agree that the primaries being discussed ARE
> > perceptually very
> > close (I was involved in some of the standardization).  I
> > simply point
> > out that the x,y coordinates are not a way to prove that they
> > are close,
> > any more than a geological time scale is good for differentiating my
> > birth date from yours.
> >
> > TTFN,
> > Mark
> >
> >
> > Alan Roberts wrote:
> >
> > >Sorry, Mark, but elementary colour science does just that,
> > as I explained.
> > >In any chromaticity space, those primaries are near
> > identical sets. The
> > >table of numbers is only that, a table of numbers, but they represent
> > >colours which when plotted in any sensible chromaticity
> > diagram or colour
> > >difference diagram, will show that they are darn near
> > identical. Semantics
> > >can't get you away from that obvious conclusion.
> > >
> > >----- Original Message -----
> > >From: "Mark Schubin" <tvmark@xxxxxxxxxxxxx>
> > >To: <opendtv@xxxxxxxxxxxxx>
> > >Sent: Tuesday, June 29, 2004 1:59 PM
> > >Subject: [opendtv] Re: New Chips Improve Color TV Dramatically
> > >
> > >>1 - Granted, the primaries are perceptually similar, but
> > >>2 - You cannot prove that from your numbers.
> > >>
> > >>TTFN,
> > >>Mark
>
>
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