
NTSC and PAL
frequency interleaving 29
I introduced the concepts of composite encoding in
Introduction to composite NTSC and PAL, on page 103.
In the previous chapter,
NTSC and PAL chroma modula-
tion,
I detailed the formation of modulated chroma. In
the S-video interface used in consumer equipment,
luma and modulated chroma are conveyed separately.
However, in most applications of NTSC and PAL, luma
and modulated chroma are summed to form a single
composite NTSC or PAL signal. In studio-quality or
broadcast composite video, summation of these signals
is based upon the frequency-interleaving ...