Madrigal Imaging MP-9 - Manual (Page 113)

Contrast (ratio)
➤
The ratio of brightness of the brightest possible area to the darkest possible
area of an image.
Convergence
➤
The alignment of the projected red, green and blue images on the
projection screen.
Current Setup
➤
Memory
The setup memory which is currently being used to display a given
source's image.
Curved Screen
➤
A projection screen which is curved to improve screen gain. Curved screens
usually have screen gains which are greater than 1 but viewing angles much
less than 180°.
Decoder
➤
A device that converts NTSC, PAL, PAL M, PAL N, PAL 60, SECAM
or NTSC 4.43 video to RGB video (Multi-standard Decoder).
Diffused
➤
Screen A type of rear-projection screen which spreads the light striking it.
Screen gain is less than 1 but audience viewing angles are increased.
Display Setting ➤
The level of a display adjustment. Some display adjustments are:
Contrast, Brightness, Blanking, Bow, Size, Keystone, Pincushion, Focus
and Convergence.
Flicker
➤
A rapid variation in brightness created when the frame rate is too slow.
(See also Interlace.)
Frame Rate
➤
The frequency at which complete images are generated. For non-interlaced
signals, the frame rate is identical to the vertical frequency. For interlaced
signals, the frame rate is one half of vertical frequency.
Foot-candle
➤
The intensity of visible light per square foot.
1 foot-candle = 1 lumen/square foot = 10.76 lux
Foot-lambert
➤
The luminance (brightness) which results from one foot-candle of
illumination falling on a perfectly diffuse surface.
Gain or Screen
➤
Gain
The ability of a screen to direct incident light to an audience. A flat matte
white wall has a gain of approximately 1. Screens with gain less than 1
GLOSSARY
A.3