Glossary - Sony BVP-550 Operation Manual

Glossary

Glossary
Aliasing
Distortion of a demodulated signal caused
by the overlap of the base band signal and
the lower sideband signal.
B-Y signal
B (blue) signal minus Y (Luminance)
signal: one of the color difference signals.
Color temperature
The temperature in Kelvins (K) to
represent the color of a light source,
determined by heating a perfectly black
body until its color matches that of the
light source. Color temperature is higher
when the color is bluish and lower when
reddish.
CTDM
Compressed Time Division Multiples. A
method of processing chrominance signals
for recording. When component video
signals are recorded, both of the two
chrominance signals (R-Y, B-Y) are time-
compressed to half, multiplexed, and
recorded on a single track one after the
other.
DCC
Dynamic Contrast Control. A video
camera containing a DCC circuit can
handle a wide dynamic range of
luminance.
Ff
See Flange focal length.
Flange focal length
The distance from the plane of lens
mounting flange to the image focal plane.
Abbreviated to Ff.
Flare
Dark or colored flashes caused by signal
overload through extreme light reflections
of polished objects or very bright lights.
Flicker
Repeated change of brightness on the
screen.
Gen-lock
Generator lock. To synchronize the pulse
generator built into video equipment to an
external reference (master) sync signal.
Hunting
Repeated brightening and darkening of an
image resulting from repeated response to
automatic iris control.
A-4
Appendixes
I signal
One of the two color signals, containing
reddish orange and bluish green
components to which the human eye is
sensitive.
ND filter
Neutral Density filter. ND filters reduce
the amount of incident light equally across
the entire visible wavelength range without
affecting color.
Pedestal level
Criterion of the video level during a
shooting. Set the master black 10% higher
than the blanking level because noises are
included around the absolute black of the
video signal.
Q signal
One of the two color signals, containing
yellow and violet components to which the
human eye is relatively insensitive.
Return video
A video signal that is returned to the
camera to allow the camera person to
monitor the video image. This signal
consists of either the video signal sent to
the VTR, or the video signal selected by an
adjustment panel when more than one
camera is being used.
R/G mixing detail circuit
A circuit used to mix R and G signals to
obtain a Y signal so that a sharp picture is
reproduced.
R-Y signal
R (red) signal minus Y (luminance) signal;
one of the color difference signals.
Two-line image enhancer
A circuit with a mechanism that provides a
2H (horizontal synchronization) delay to
emphasize Edges in the vertical and
horizontal directions.
VBS
Video, Burst, and Sync. A composite
signal consisting of video signal, burst
signal and sync signal.
Vertical smear
A bright vertical line which appears on the
screen when shooting a very bright object
with a CCD camera. Also called smear.
Letter Ver.3.0 3-810-005-11(1)