Runco Video Xtreme VX-40d Owner's Operating Manual page 93

Digital cinema projectors
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NTSC Video
Optical Screen
PAL Video
Pixel
Pixel Phase
Pixel Tracking
Projector-to-Screen
Distance
Protocol
Pull-down List
Rear Screen
Resizing
Resolution (lens)
Resolution (projector)
Retrace Time
(Horizontal)
Rise Time
RGB Video
RS-232
RS-422
S-Video
Scan Frequency
Scan Line
Scan Rate
A list of selectable options displayed on the screen.
A video output format of some video tape and disk players. There are two types of NTSC
(National Television Standards Committee) video: NTSC 3.58 and NTSC 4.43. NTSC 3.58
is used primarily in North America and Japan. NTSC 4.43 is less commonly used.
A type of rear-projection screen which re-directs light through the screen to increase
image brightness in front of the screen. Screen gain is usually greater than 1 but audience
viewing angles are reduced.
PAL (Phase Alternating Line) video is a 50 Hz standard with 768 x 576 resolution. It is
found on some video tape and disk players (used primarily in Europe, China and some
South American and African countries).
The smallest discernible element of data from a computer-generated image.
The phase of the pixel sampling clock relative to incoming data.
The frequency of the pixel sampling clock, indicated by the number of pixels per line.
The distance between the projector's lens and the screen. Also called "Throw Distance".
The syntax used by the communication system.
A selectable menu item that unfolds into a list of options pertaining to it.
A translucent panel for screen projection. Incident light travels through the incident surface
of a rear screen and forms an image on the other surface.
The ability to manipulate through software commands the physical size, placement and/or
aspect ratio of an image.
The maximum number of alternate white and black horizontal lines that can be
distinguished on a screen when a photographic target is placed between the lens and a
light source and illuminated by that source.
The maximum number of pixels that the projector can display horizontally and vertically
across an image, such as 1024 x 768 (called XGA).
The minimum time required for a CRT projector to move the position of the scanning spot
from the right edge to the left edge.
The time required by the video amplifier of the projector to increase its output from 10% to
90% of the maximum value.
The video output (analog or digital) of most computers. Analog RGB video can have 3, 4,
or 5 wires — one each for red, green, and blue, and either none, one or two for sync. For
three-wire RGB, the green wire usually provides sync. (See TTL Video).
A common asynchronous data transmission standard recommended by the Electronics
Industries Association (EIA). Also called serial communication.
A less common asynchronous data transmission standard in which balanced differential
voltage is specified. RS-422 is especially suited to long distances.
The output from certain video tape players and video equipment. S-Video separates sync
and luminance from color information, typically producing a higher quality display than
composite video.
The horizontal or vertical frequency at which images are generated. Also known as scan
rate or refresh rate.
One horizontal line on the display.
The horizontal or vertical frequency at which images are generated.
93
Appendix A: Glossary

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