>> > >"Simon S Aysdie" wrote
> > >> Why is video inverted for transmission?
> >
> > >So that the peaks of sync pulses are transmitted at +100%
>modulation,
> > >which allows TV receivers to show the most stable picture in the
> > >presence of noise (eg, fringes of the coverage area of the TV
> > >station).
> >
> > >RF
> > >RCA Broadcast Field Engineer, retired
> >
> > ..and the mean power output of the TX is lower
> >
> > --
> > - René
>
>So, the transmitter is max power at black but the CRT receiver is max
>power at white. At some number of viewers the power company should see
>a constant load. Right?
>
>Riiiiiight.
>
>But then consider that LCDs use maximum power when displaying
>all black (because they have to turn on ALL the pixels to block the
>backlight.
>
At least until OLED screens get in the channel. Not additive color mixing schema there.