[Jukebox-list] Re: TV-was: W850 & question

[David Breneman]

--- Ron Rich <ronnnrich at yahoo.com> wrote:

> David,
>   Was that TV system the one "invented" by CBS--as opposed to the
> one adapted ("RCA's") ? TIA, Ron rich

You're thinking of the "color wars" 20 years later.
The LCD mirror-scanned projectors probably reached their
zenith during the 1936 Olympic games, when many "Television
Parlors" (small theaters) were set up around Germany so
people could watch the games.  By the end of WWII, CRT
technology had improved to the point that CRT projectors
could fill an even bigger screen with more light.

The CBS/RCA color battle was over CBS's system for
providing color by spinning a filter wheel in front
of the camera and picture tube, and RCA's system for
time-division multiplexing the output of three primary
color camera tubes into one video signal.  The CBS
system was basically pre-war technology, and even
though the RCA system was adopted for use by the FCC
in 1954, it was almost 10 years before people started
buying sets.  It was literally and technically way
ahead of it's time.  Imagine doing time-division
multiplexing, variable-rate sampling, frequency-
depandent 3-stage signal compression and drift-resistant
synchronisation of separate luminance and chrominance
signals all with tube-base analog electronics.  Facing
that technological hurdle, spinning filter wheels
start to look like an attracive solution. :-)



David Breneman         david_breneman at yahoo.com


 
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