Tektronix 2200 Manual Do Utilizador
Glossary
G-6
Background, and the source selected on B
Background becomes selected on A
Background.
Background becomes selected on A
Background.
Floppy Disk:
An electronic device which is
capable of storing data and programs for
ease of retrieval and use by a computer.
(Also see Hard Disk.)
ease of retrieval and use by a computer.
(Also see Hard Disk.)
Frame:
One complete video picture
consisting of two interleaved fields. In the
NTSC system, one frame makes up a
complete TV scanning cycle (1/30th of a
second). In the PAL system, two frames (at
1/25th of a second) are required to make
up a complete TV scanning cycle.
NTSC system, one frame makes up a
complete TV scanning cycle (1/30th of a
second). In the PAL system, two frames (at
1/25th of a second) are required to make
up a complete TV scanning cycle.
Frame (hardware):
The metal cabinet which
contains the switcher's circuit boards.
Frame Lock:
Synchronization of the video
signal with a time code.
Freeze Frame:
The recording or storage of
a single frame of video.
Front Porch:
The portion of the video
signal that occurs during blanking and
extends from the end of active video to the
beginning of sync.
extends from the end of active video to the
beginning of sync.
G
Gain:
An amplification adjustment of the
key source attribute (chrominance, hue,
luminance, etc.) to be used for keying. The
luminance, etc.) to be used for keying. The
GAIN
control affects the sharpness of the
key edge.
Generation:
The number of times removed
a dupe is from the original videotaped
material. A copy of the original is a second
generation tape, and so on.
material. A copy of the original is a second
generation tape, and so on.
GPI (General Purpose Interface):
An
electronic device containing several
electronic switches that can be activated
by a remote data signal. GPIs allow the
editing system to control various remote
components.
electronic switches that can be activated
by a remote data signal. GPIs allow the
editing system to control various remote
components.
Gray Scale:
Range of luminance levels
from black to white.
H
Halo Border:
A soft wipe pattern border
which is mixed with different softness on
each of the two edges to give a halo effect.
each of the two edges to give a halo effect.
Hard Copy:
A print out on paper of data
contained on another medium, such as a
monitor or disk.
monitor or disk.
Hard Disk:
An electronic device which is
capable of storing large amounts of data
and programs for retrieval and use by a
computer. (Also see Floppy Disk.)
and programs for retrieval and use by a
computer. (Also see Floppy Disk.)
Hardware:
The electric, electronic, and
mechanical equipment used to perform
the tasks controlled by a computer. (Also
see Firmware and Software).
the tasks controlled by a computer. (Also
see Firmware and Software).
Head:
An electromagnetic device that
reads, writes, or erases information in a
storage medium.
storage medium.
Hex (hexidecimal):
A numerical notation
system using a base of 16. (Also see Binary
and Octal).
and Octal).
House Sync:
The synchronous signal
generated in the studio for use as a
reference for other timing signals.
reference for other timing signals.