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Glossary
Refresh Rate
The number of refresh operations per second The
light-emitting element of a display maintains the
same luminosity and color for an extremely short
time. For this reason, the image must be scanned
many times per second in order to refresh the light-
emitting element. The refresh rate is expressed in
hertz (Hz).
Resized display
This function is used to project computer images
that have a resolution more than or less than the
projector's panel resolution, so that they fill the
whole of the projection area.
SDTV
An abbreviation for Standard Definition Television. It
refers to standard television systems which do not
satisfy the conditions for High-Definition Television.
Security
lock
A device consisting of a projector case with a hole in
it that a commercially-available theft-prevention
cable can be passed through in order to secure the
device to a table or pillar. This projector is
compatible with the MicroSaver
Security System
manufactured by Kensington
.
Squeeze
mode
The method of compressing 16:9 Widescreen
images and recording them on video software as 4:3
images.
When projecting with Squeeze mode on, the images
will return to their original 16:9 format.
sRGB
An international standard for color intervals that was
formulated so that colors which are reproduced by
video equipment can be handled easily by computer
operating systems (OS) and the Internet.
SVGA
A type of video signal with a resolution of 800
(horizontal) × 600 (vertical) dots which is used by
IBM PC/AT-compatible computers.
S-Video
A type of video signal which has the video
brightness and color signal information separated, in
order to provide better image quality. It refers to
images which consist of two independent signals:
Y (luminance signal), and C (color signal).
Sync.
(Synchronization)
The process of matching the phases (the relative
position of crests and troughs) of computer and
projector signals. If signals are not synchronized,
problems such as flickering, blurriness and
horizontal interference can occur.
Tracking
The process of matching the computer and projector
frequencies (the number of crests in the signals). If
tracking is not carried out correctly, wide vertical
stripes will appear in the projected images.
VGA
A type of video signal with a resolution of 640
(horizontal) × 480 (vertical) dots which is used by
IBM PC/AT-compatible computers.
XGA
A type of video signal with a resolution of 1,024
(horizontal) × 768 (vertical) dots which is used by
IBM PC/AT-compatible computers.
YCbCr
The carrier signal contained in the color bar signal
used in modern (NTSC) TV transmissions. The
name comes from the Y (luminance) signal and the
CbCr (chroma [color]) signals.
YPbPr
The carrier signal contained in the color bar signal
used in high-definition TV (HDTV) transmissions.
The name comes from the Y (luminance) signal and
the PbPr (color difference) signals.