9 Nov
2012
9 Nov
'12
3:17 p.m.
On 11/09/2012 01:32 PM, Cindy Croxton Electronics Plus wrote:
Color CRT monitors have 3 guns (red, blue, and green)
but a mono monitor has
only 1 gun. So even if you used filters to "fool" yourself into thinking
color, it can't actually be color, because there is only 1 gun!
The number of electron guns is irrelevant--both Sony and Philco offered
beam-index color CRTs with but a single gun.
At any rate, between 1950 and 1953, the official color television
standard in the USA was the CBS field-sequential system, which, compared
with the RCA system of the same time was quite good (at least for the
time)--a mechanical 3-color filter was spun in front of the CRT,
synchronized to a similar filter at the camera.
It wasn't until 1953 that RCA had improved its system well enough for
NTSC color to become the official standard.
A few CBS System receivers still exist.
--Chuck