Videonics MX-1 Instruction Manual page 86

VIDEONICS DIGITAL VIDEO MIXER
POSTERIZATION
See PAINT.
PREVIEW
An output that allows the operator to see the
video source before processing (before titles are
added, effects are performed, etc.) Typically, each
signal can be previewed on its own monitor. This
is an effective method to check work before going
"on the air." The Digital Video Mixer includes a
separate preview output which can be used to
preview all four of its video input signals on-screen
simultaneously.
PRIMARY COLORS
The basic colors used in TV and video systems of
red, green and blue.
PROGRAM
See OUTPUT.
RCA CONNECTOR
A type of connector used on consumer VCRs and
camcorders. The RCA connector is typically used
for short composite video and audio.
RC TIME CODE (Rewritable Consumer)
A system for reading/writing time code. Supported
by both the Thumbs Up and Video EditMaker.
RESOLUTION
A measure of the ability to reproduce detail. Gen-
erally, referred to as horizontal resolution and
evaluated by establishing the number of horizon-
tal lines which are clearly discernible on a test
pattern.
RF (Radio Frequency)
A term used to describe the radio signal band of
the electromagnetic spectrum (about 3 MHz to
300 GHz). Broadcast television is RF, carried by
RF or antenna cable. VCRs include an RF jack in
addition to the separate VIDEO and AUDIO jacks.
RF MODULATOR
Device that combines video with an RF source so
the result can be transmitted to a television or
VCR. Converts a VIDEO and AUDIO jack to an
RF jack.
RGB (Red/Green/ Blue)
The basic components of a color video signal.
SCART
Multi-pin audio/video connector used in consumer
equipment, especially in Europe.
SECAM (Sequential Couleur A'memorie)
The video standard used mainly in France, East-
ern Europe, Russia and surrounding countries. In
countries using the SECAM standard, most video
production is done using PAL and converted to
SECAM prior to transmission. MESECAM is a
very similar format used in some Middle East
countries. (See NTSC and PAL)
SEG (Special Effects Generator)
Device designed to generate special effects. The
simplest devices process a single video signal,
change its color, generate sepia tones, invert the
picture to a negative, posterize the image and
fade or break up the image into various patterns.
More sophisticated equipment, such as the Digital
Video Mixer, can combine several video sources,
and perform digital effects.
SEPIA TONE
A process used in photography to generate a
brownish tone in pictures giving them an "antique"
appearance. The same idea has been electroni-
cally adapted for video production where a black
and white image can be colored in sepia.
SIGNAL-TO-NOISE RATIO (S/N)
The ratio in decibels (dB), of an audio or video
signal, from the signal's maximum peak-to-peak
voltage to the measured voltage in absence of a
signal.
In video, the higher the ratio, the less snow is
visible. In audio, the higher the ratio, the cleaner
the sound.
SMPTE-VITC
A version of VITC.
SNOW
A general term used to describe interference in a
video image. It manifests as random colored or
black and white dots.
SOLARIZATION
An effect in which the brightest portions of a pic-
ture become negative (the lightest parts become
darker but the dark and middle tones are un-
changed).
SPECIAL EFFECTS
Artistic effects added to a video production in
order to enhance a production. Special effects
may vary from the limited addition of patterns or
the mixing of several video images together, to
sophisticated digital effects such as picture com-
pression, page flipping and three-dimensional ef-
fects. Special effects are usually created using
SEGs such as those included in the Video Equal-
izer, Video TitleMaker and Digital Video Mixer.
SPLIT SCREEN
An electronic process which allows the viewing of
two video images, side by side or above and
below, on-screen simultaneously.
STEREO MIXING
Simultaneous processing of both left and right
audio channels.
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