Filter
Top Products
G-4
Glossary
Composite Video: A video signal which
contains both picture and sync
information. (Also see Encoded Video.)
Control Signal: A signal used to control
some aspect of switcher operation, such as
video path selection and manipulation,
inter-processor communications, and
variable control (knob) monitoring.
Control Processor: A circuit or group
of circuits used to generate or alter control
signals.
CPU (Central Processing Unit): The
section of a computing device that controls
and causes the execution of instructions. A
CPU on a single chip and is called a
microcomputer.
Crosspoint: An electronic switch,
usually controlled by a pushbutton on the
control panel, that allows video or audio to
pass when the switch is closed.
CRT (Cathode Ray Tube): A television
or terminal picture tube.
Cut, Take: A transition between primary
video and/or key video where one signal
is instantaneously replaced by another, or
where one signal is instantaneously added
or removed. (The switch occurs during
the vertical interval so the picture is not
disturbed.)
D
Debug: To detect and correct
malfunctions of a computer or errors in a
computer program.
Decoder: A device used to generate
component video signals from an encoded
video source.
Diagnostics: A program, usually
resident in the computer, consisting of
several routines which check for
malfunctions and identify faulty
components. (Also see Program and
Routine.)
Downstream Keyer (DSK): A keyer
that inserts the key “downstream” of the
effects system video output.
Dupe: A duplicate copy of a videotape, or
to make such a copy.
Duration: The length of time (in hours,
minutes, seconds and frames) that a
particular effect or event lasts.
DPM: Digital Picture Manipulator.
E
EBU Format: A color difference video
format that uses Y, R-Y, and B-Y
components.
Editor: A control system (usually
computerized) which allows the control of
video tape machines, video and audio
switchers, and other devices remotely
from a single control panel.
EDL (Edit Decision List): A record of
edit decisions made for a program (in-
times, out-times, and effects). Often saved
on a floppy disk, it can be used for Auto
Assembly at a later time.