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Interlaced
scanning
A method of image scanning whereby the signal bandwidth used is approximately half
that required for sequential scanning when images with the same still picture
resolution are broadcast.
Refresh Rate
The light-emitting element of a display maintains the same luminosity and color for an
extremely short time. Because of this, the image must be scanned many times per
second in order to refresh the light emitting element. The number of refresh operations
per second is called the "refresh rate", and is expressed in hertz (Hz).
Remote
port
Connects an optional remote control receiver.
S-Video
images
A video signal which has the luminance component and color component 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).
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 protector 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.
Source prompt
The screen display showing the type of signal being input.
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) x 600 (vertical) dots which
is used by IBM PC/AT-compatible computers (DOS/V computers).
SXGA
A type of video signal with a resolution of 1,280 (horizontal) x 1,024 (vertical) dots
which is used by IBM PC/AT-compatible computers (DOS/V computers).
Synchronization
(Sync.)
The signals output from computers have a specific frequency. If the projector
frequency does not match this frequency, the resulting images will not be of a good
quality. The process of matching the phases of these signals (the relative position of
the crests and troughs in the signal) is called "synchronization". If the signals are not
synchronized, problems such as flickering, blurriness and horizontal interference can
occur.
Tracking
The signals output from computers have a specific frequency. If the projector
frequency does not match this frequency, the resulting images will not be of a good
quality. The process of matching the frequency of these signals (the number of crests
in the signal) is called “tracking”. If tracking is not carried out correctly, wide vertical
stripes will appear in the projected images.
USB
An abbreviation for Universal Serial Bus. USB is an interface for connecting personal
computers to peripheral devices which only support relatively low data transmission
speeds.
UXGA
A type of video signal with a resolution of 1,600 (horizontal) x 1,200 (vertical) dots
which is used by IBM PC/AT-compatible computers (DOS/V computers).
VGA
A type of video signal with a resolution of 640 (horizontal) x 480 (vertical) dots which
is used by IBM PC/AT-compatible computers (DOS/V computers).
XGA
A type of video signal with a resolution of 1,024 (horizontal) x 768 (vertical) dots
which is used by IBM PC/AT-compatible computers (DOS/V computers).
YCbCr
The carrier signal which is contained in the color bar signal used in modern TV
transmissions (NTSC format). The name comes from the Y (luminance) signal and the
CbCr (chroma [color]) signals.
YPbPr
The carrier signal which is 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.
Glossary