GRASS VALLEY INDIGO, User Manual

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INDIGO AV Mixer User Manual 163
Glossary
A
AMP (Advanced Media Protocol)
Protocol to send commands via RS-422 serial
link or via an Ethernet connection.
Auto Transition
A transition having a predefined duration
generally initiated by pressing a control pan-
el button.
Aspect
The ratio of a picture’s horizontal and verti-
cal dimensions when correctly displayed
(4:3, 16:9).
Auxiliary
Supplemental equipment or features that
provide capabilities to the basic system.
Audio Follow Video
A video recording, mixing or switching tech-
nique in which the audio signal associated
with any given video signal is recorded,
switched, or mixed with that video signal.
B
Background Transition
A transition between the background video
signals selected.
Background Video
Video that forms a background scene into
which a key may be inserted.
Backing Color
The color in a chroma key scene that will be
replaced with another video signal.
Bit Rate
The number of bits per second passed from
one point to another.
Black Burst
Video reference signal for synchronization
purposes. Contains the combined sync tim-
ing elements of a video signal along with the
color burst signal.
Box Wipe
A rectangular wipe pattern. For masking, the
system provides a special box wipe pattern
generator allowing independent control of
the placement of each side of the box.
Bus
A bunch of parallel conductors or signal
channels connecting various inputs and out-
puts.
C
Channel Gain
See Gain .
Chroma
The depth or saturation of color. Chroma,
hue, and luminance make up the three char-
acteristics of television color.
Chroma Key
A video key effect in which one video signal
is inserted in place of areas of a particular
color in another video signal. Blue and green
are the chroma key colors most frequently
used.