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Appendix
222
Glossary
RGB
An output signal format which
displays pictures by using the
three primary colors: Red,
Green, and Blue.
Serial digital interface
(SDI)
A standard for transmitting
uncompressed digital video
signals and embedded audio
over a single coaxial cable.
STP (Shielded Twisted Pair
cable)
A type of cable for
communications. Copper wires
are twisted in pairs, and then
shielded.
Streaming
Real-time playback of audio
and data received over a
network. Compared to
“download” playback, which
starts after all the data has been
received, streaming allows
playback of data received up to
now. Formats which enable
streaming include RealMedia,
Windows Media, and Quick
Time. This system supports the
RealMedia streaming file
format (.rm).
Subnet mask
An IP address, which indicates
the address of a device in a
network, has two components: a
network address (the address of
the network) and a host address
(the address of an individual
computer). A subnet mask is a
value used to specify how many
bits in the IP address are
reserved for the network
address. A subnet is a smaller
network created by dividing a
large network into two or more
parts.
Superimpose
A type of special effect in video
editing, used to display text and
pictures over other pictures.
Talk back (TB)
To pass along instructions, for
example from a director. In this
system, when you talk into the
microphone on the front panel,
your voice is output to the
connected intercom system,
allowing you to converse with
other people on the intercom
system.
TB (Talk Back)
See Talk back.
Telop (Television Opaque
Projector)
Superimposed text and image
resources, such as television
subtitles. This also refers to text
and images that have been
combined with video.
Threshold
The level at which a limiter or
compressor is activated.
Thumbnail
An image which has been
reduced in size for the purpose
of displaying a list of many
images.
Tilt
To move a camera up and down.
Transition
To switch from one video to a
different video over a certain
time interval. Transitions can be
used together with text and
image keys to compose and
erase pictures.
Transition effect
Gradually switching from one
video to another through the
application of one of various
effects. This systems supports
two type of transition effects:
mix and wipe.
Trim
To adjust the input level of
audio signals. These
adjustments are performed at
the input stage, before level
adjustments with the audio
channel faders.
TRS
A jack used in headphones and
other devices.
VISCA
A protocol developed by Sony
which allows video equipment
to be connected to computers.
Wipe
A type of transition effect. A
new picture moves in to replace
an old picture, as if wiping the
old picture away.
XLR
A 3-pin connector, often called
a Cannon connector. A locking
mechanism keeps the connector
securely connected even when
the cable is pulled. Very stable
despite its simple structure, and
often used on microphones to
suppress handling noise.