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Appendix A-11
A
Glossary
Aliasing
Distortion of the signal caused by overlap of the baseband signal and the
lower sideband signal when the signal is demodulated.
ATW
Auto Tracing White balance. The white balance is automatically
adjusted for the lighting conditions during shooting.
Bayonet mount
A type of lens mount. The lens can be inserted into the lens mount and
quickly locked in place by simply rotating the lens locking ring.
Black balance adjustment
To balance the black levels of the R, G, and B channels of a video
camera so that black has no color.
Black set
A reference level for black balance adjustment.
CCD
Charge-Coupled Device. A solid state imager used in most video
cameras in place of a pickup tube. The device converts input light levels
into electrical charges that are first stored and then output in the form of
voltage variations.
Center marker
A cross which indicates the center of the image on the viewfinder screen.
Color bar signal
A test signal which can be displayed as vertical bars of different colors
on a color video monitor. This signal is used to check chrominance
functions of color television and video systems such as cameras and
monitors.