57
Glossary
Appendix
SECAM
An abbreviation for Sequential Couleur A Memoire, and
a format for ground-based analogue color television
broadcasts. This format is used in France, Eastern Europe
and the former Soviet Union, the Middle East and Africa.
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.
SVGA
A screen resolution standard for 800(W) x 600(H) pixels.
SXGA
A screen resolution standard for 1280(W) x 1024(H)
pixels.
Sync. (Synchronization)
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.
VGA
A screen resolution standard for 640(W) x 480(H) pixels.
XGA
A screen resolution standard for 1024(W) x 768(H)
pixels.
YCbCr
A component video signal for SDTV. Y indicates the
luminance, and Cb and Cr indicate the color difference.
YPbPr
A component video signal for HDTV. Y indicates the
luminance, and Pb and Pr indicate the color difference.