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30 3M Multimedia Projector MP8610 3M 1998
Refresh rate
The number of times the screen image is “painted” or refreshed per second, expressed in Hz.
Remote control sensor
The remote control sensor is located on the front of the projector. It receives signals from the remote
control transmitter (direct line-of-site or bounced off of the projection screen) which control the different
operating functions of the projector. See remote control transmitter.
Remote control transmitter
Allows remote operation of the projector functions by aiming the transmitter directly at the sensor
(maximum range) on the front of the projector or aiming the transmitter at the projection screen so the
signal will bounce off the screen and back to the sensor. The remote also has mouse emulation
capability that will also control the mouse functions of the computer-input source.
Resolution
The number of pixels available in a display device for creating images. Expressed as a number of
columns by number of rows (e.g. VGA resolution, 640 x 480 or 720 x 400).
S-Video
A video signal that separates luminance (Y) and chrominance (C) signals. Also known as Y/C video.
SECAM (Séquentiel Couleur à Mémoire)
The color television standard developed in France and used in certain other countries.
SYNC
The timing of the computer's video signal. Usually a PC uses two separate lines for horizontal
synchronization (beginning of the line) and vertical synchronization (beginning of the frame). This
scheme is called
separate sync
.
If the two synchronization signals are transmitted on a single extra line, this is called
composite sync
. If
the composite sync signal is transmitted together with a video signal (usually the green video signal), this
is called
sync on green
. The projector can be set to handle all three kinds if synchronization schemes.
Thin-Film Transistor (TFT)
A tiny (less than fifty microns across) nearly transparent wafer of semi-conduction silicon. These act as
extremely precise electronic switching mechanisms.
VGA (Video Graphics Array)
This is a standard analog interface for PC computers. The resolution for text mode is 720 x 400 and for
graphics mode 640 x 480.
Video
The capability to project images from a VCR, Laser Disc, or PC with CD-ROM Drive is a standard
analog interface for PC computers. The resolution for text mode is 720 x 400 and for graphics mode 640
x 480.