Glossary - Sony AWS-750 Operating Instructions Manual

Glossary

Black burst signal
A reference signal used to achieve
external synchronization (GenLock).
This is a black composite signal.
Chroma key
A method of creating a composite
picture by deleting components that
contain a specified color (chroma).
Typically, a subject is captured in
front of a blue background,
commonly referred to as a "blue
screen," and the blue background is
removed, leaving only to subject for
compositing.
Color bars
A test signal which displays vertical
colored stripes on a monitor. Used to
adjust the hue and saturation of
colors on video cameras and
monitors.
Compressor
A function which smoothly limits
audio signals exceeding a certain
threshold. Used to prevent distortion
in high-level audio signals.
Default gateway
A router or computer on a network
which serves as an entrance to an
outside network. Other computers in
the network access the outside
network via the default gateway.
Delay
A function which delays audio to
bring it into synchronization with
video, used when video is input later
than the corresponding audio.
DHCP (Dynamic Host
Configuration Protocol)
A protocol for automatically
assigning IP addresses to devices
when they connect to a network, and
recovering the addresses when they
disconnect.
DNS (Domain Name System)
A system which allows Internet
domain names to be translated into IP
addresses.
Embedded audio
Audio that is included in a video
signal.
Encoding
Data rate conversion that uses
compression technology and is
performed based on the transmission
bandwidth and the capacity of the
recording media.
Equalizer (EQ)
A function that controls levels for
selected audio frequencies in the
high, mid, and low regions. Used to
strengthen or suppress specific
frequencies in order to improve the
audio.
Filter
A function that removes signals that
are within a specified frequency
region. Used to remove cable noise
and other kinds of noise.
GPI (General Purpose
Interface)
A general-purpose interface that
controls connected devices by
switching the logic of that port on or
off.
HDCP (High-bandwidth Digital
Content Protection)
A form of copyright protection that
encrypts digital signals as they travel
across connections and prevents
unauthorized copying of content.
HDMI
A transmission interface standard for
transferring video and audio as a
digital signal.
Host name
A name assigned to a computer on a
network to make it easier to identify.
Usually consisting of alphanumeric
characters, although conventions
differ according to the system.
Limiter
A function which prevents audio
levels from exceeding a specified
threshold. Used to suppress peaks in
audio with large differences in
amplitude.
Logo
A permanently visible mark that is
shown on videos and used to indicate
copyrighted material, for example.
Mix
A new picture is mixed into an old
picture, eventually replacing the old
picture.
Mixdown
Combining audio inputs from
multiple channels into one channel.
Monitor
To listen to audio and view video. Or
a device for viewing and listening.
Oscillator
A transmitter that oscillates at a fixed
frequency, such as a sine wave. This
unit is equipped with an internal
audio oscillator.
Pan
In audio, to adjust the left/right audio
balance. In video, to move the
camera to the left and right.
PFL (Pre-Fader Listen)
Monitoring audio before level
adjustments with the audio channel
faders. Used to check the input audio.
On this system, pan and level control
are not applied to PFL audio, even if
trim, filter, EQ, pan, and level control
settings have been made.
Picture-in-Picture (PinP)
An effect achieved by embedding a
video within another video.
Preset
A function which allows a set of
electrical settings to be saved and
reproduced as a single set of data.
This system has a camera preset
function.
Program (PGM)
The final video and audio signals
output from this system, after the
application of effects. The video seen
by viewers.
RGB
An output signal format which
displays pictures by using the three
primary colors: Red, Green, and
Blue.
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Glossary