In message , Mike Tomlinson
writes
NTSC = Never Twice the Same Colour. NTSC TVs had (still have?) a "Hue"
control for the user to twiddle when skin tones started looking a bit
green.
Correct. I still have one of the first Sony sets to enter the county
which had to use a slight variant of NTSC to get past the PAL patents,
it's fitted with a hue control which in effect rotates the quadrature
subcarrier (as in NTSC) to get the correct skin tones (the wrong colours
being caused by sub-carrier side band attenuation).
--
Clive