G-2
Glossary
Background Transition:
A transition
between signals selected on the
PROGRAM and PRESET background
buses or A and B Background buses.
Background Video:
(1) Video that forms
a background scene into which a key may
be inserted. Background video comes from
the PROGRAM and PRESET background
buses, or from the A and B Background
buses in an M/E. (2) A video output
generated by the Background generator
within the switcher for use as background
video in key effects.
Back Porch:
The portion of a video
signal that occurs during blanking from
the end of sync to the beginning of active
video.
Baud Rate:
The transmission rate (in
bytes per second) of data between
communication devices such as
computers, modems, and/or printers.
BETA Format:
A color difference video
format that uses the Y, R-Y, B-Y
components.
Binary:
A numbering system based on
just two digits, 0 and 1. (Also see Hex and
Octal.)
Bit (Binary Digit):
A single unit of
information in a storage device. (Also see
Byte and Word.)
Black:
A black video output generated
within the switcher and selected by the
BLACK pushbuttons on the crosspoint
buses and by the PST BLK pushbutton.
Blanking:
(1) The portion of the video
signal during which the picture is shut off
to keep the screen dark during vertical and
horizontal retrace. (2) A standard signal
from a television sync generator used to
create blanking in video.
Blanking Processor:
A circuit which
strips blanking and sync from the source
video and replaces it with blanking and
sync from a reference source.
Boot:
The process of loading a computer
operating system for use, usually
automatically (upon power up) or
manually (by pushbutton).
Border:
A title enhancement in which a
matte is added around the holes cut by the
key signal.
Borderline®:
A GVG electronic system
which produces a border around a title, an
outline of the title, a shadow alongside the
title, or an extrusion of the title.
Brightness:
The relative intensity of
light determined by the sum of responses
of the eye to the component wavelengths.
Buffer:
An isolating component used to
eliminate the loading of a driving circuit
by the circuit(s) being driven.
Bus:
A circuit which provides a path for
the transfer of information from any of
several sources to any of several
destinations.
Bus Master:
The device currently in
control of the bus in a system where
Summary of Contents for Grass Valley 3000
Page 16: ...xvi Preface ...
Page 108: ...2 72 Section 2 Startup Configuration ...
Page 115: ...3 7 Transitions Figure 3 1 A Mix Transition Starting Video Midway Transition Ending Video ...
Page 141: ...4 3 Starting Conditions Figure 4 1 Source 1 Figure 4 2 Source 2 ...
Page 222: ...4 84 Section 4 Switcher Operations ...
Page 240: ...Appendix A Shaped and Unshaped Video A 18 ...
Page 256: ...B 16 Appendix B Keyframe Facts ...
Page 262: ...Appendix C Super Black C 6 ...
Page 276: ...G 14 Glossary ...