Tektronix 2200 Manual Do Utilizador
Glossary
G-11
RAM (Random Access Memory):
A
computer memory system that allows
rapid storage and retrieval of information.
It is (usually) considered volatile in that
the information is lost if power is
interrupted.
rapid storage and retrieval of information.
It is (usually) considered volatile in that
the information is lost if power is
interrupted.
Raster:
The area of a TV picture tube that
is scanned by the electron beam.
Real Time:
Actual clock time in which
events occur.
Reboot:
The process of re-loading the
computer operating program (see Boot).
Recall:
To bring a setup from E-MEM
memory and set up a switcher with it.
Re-entry:
Entry or apparent entry of a
processed video signal into another
processing circuit (e.g., Mix/Effects into
Program/Preset).
processing circuit (e.g., Mix/Effects into
Program/Preset).
Register:
A storage location in micro-
processor memory which is accessed for
storage or recall by one of the buttons on
the E-MEM keypad.
storage or recall by one of the buttons on
the E-MEM keypad.
RGB:
Red, green, blue; the three primary
colors used in video transmission/
reception, often referring to the three
(unencoded) color component outputs of a
color camera.
reception, often referring to the three
(unencoded) color component outputs of a
color camera.
RGB Chroma Key:
A key effect in which the
key signal is derived from chrominance
information (hue and saturation)
contained in the RGB color components of
a video signal.
information (hue and saturation)
contained in the RGB color components of
a video signal.
S
Saturation:
The intensity of a color; the
degree by which the eye perceives a color
as departing from a gray or white scale of
the same brightness. A saturated color
does not contain any white.
as departing from a gray or white scale of
the same brightness. A saturated color
does not contain any white.
Self Key:
A key effect in which the same
video signal serves as both the key source
and the fill source.
and the fill source.
Sequence:
An operating mode which
allows automatic recalls of the contents of
a series of E-MEM registers.
a series of E-MEM registers.
Shadow (Dropshadow):
A title
enhancement consisting of a shadow effect
along one edge of the title key or along one
edge and the bottom of the key.
along one edge of the title key or along one
edge and the bottom of the key.
Signal-to-Noise Ratio:
A measurement of
the relative amount of noise present in an
audio or video signal.
audio or video signal.
SMPTE:
Society of Motion Picture and
Television Engineers.
SMPTE Component Standard:
A color
difference video standard outlined by
SMPTE, expressed in terms of Y, R-Y, and
B-Y.
SMPTE, expressed in terms of Y, R-Y, and
B-Y.
Soft Edge:
A wipe pattern edge between
two video signals in which the signals
dissolve into each other for a soft
transition effect.
dissolve into each other for a soft
transition effect.
Software:
Computer programs. (Also see
Hardware and Firmware.)