[opendtv] Re: France bids farewell to SECAM
- From: Olivier Houot <olho_avatar_i@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Thu, 08 Dec 2011 21:55:34 +0100
Cliff benham wrote:
>
> The idea for the 3 gun color CRT was German and from the late 1930s.
> [W.Flechsig, Tricolor CRT-1938]
>
> While in the early 1950s, RCA struggled making a workable 15 and an
> unsuccessful 21 inch 'flat plate' color CRT, CBS invented in 1953 and
> patented the 'CBS-Colortron' which used a spherical shadowmask with
> the
> color dots photographically deposited on the spherical glass of the
> CRT
> itself. [CBS-Colortron Patent]
>
> RCA quietly bought a manufacturing license from CBS and the result
> was
> the 21AXP22.
>
Ok, so inspiration came from elsewhere, but in the case of the color
CRT, the path from the theoretical idea to a practical thing aimed at
the mass market seems such a difficult one that i would give much of the
credit to the american engineers that made it happen.
Now, i am surprised to learn it was not only RCA's doing and CBS already
made a working device on its own, thanks for this interesting piece of
information.
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