86 Appendix B: Camera interface reference
If the luminance and chrominance are mixed into a single signal, the signal is a
composite color signal. To decode a composite color signal, the chrominance and
luminance first have to be separated. The chrominance can be isolated using a
chroma bandpass filter, or the luminance can be isolated using a chroma trap. Better
quality color signals are sometimes provided by putting the luminance (referred
to as the Y component) on a single wire, and the chrominance information on the
"C" signal. This is referred to as YC video, and is often supplied through a DIN
Y connector.
R Then, the colors can be properly decoded for output, using a chroma demodulator.
Negative-going video
A 5 Negative-going video is an analog video signal where white or bright pixel data is
represented by a more negative voltage than black or dark pixel data. In general,
IN 0 a negative-going video signal can be represented as follows:
0 non-interlaced negative-video signal
PRE19LIMMAY 2 frame0
frame 1
sync
black reference level
white reference level
