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118 Glossary
Minimum Distance — The closest position that a projector can focus an image
onto a screen.
NTSC — National Television Standards Committee. North American standard for
video and broadcasting, with a video format of 525 lines at 30 frames per second.
PAL — Phase Alternating Line. A European broadcast standard for video and
broadcasting, with a video format of 625 lines at 25 frames per second.
Reverse Image — Feature that allows you to flip the image horizontally. When
used in a normal forward projection environment text, graphics, etc. are
backwards. Reverse image is used for rear projection.
RGB — Red, Green, Blue — typically used to describe a monitor that requires
separate signals for each of the three colors.
S-Video — A video transmission standard that uses a 4-pin mini-DIN connector
to send video information on two signal wires called luminance (brightness, Y) and
chrominance (color, C). S-Video is also referred to as Y/C.
SECAM — A French and international broadcast standard for video and
broadcasting, closely related to PAL but with a different method of sending color
information.
SSID — Service Set Identifiers — A name used to identify the particular wireless
LAN to which a user wants to connect.
SVGA — Super Video Graphics Array — 800 x 600 pixels count.
SXGA — Super Extended Graphics Array, — 1280 x 1024 pixels count.
UXGA — Ultra Extended Graphics Array — 1600 x 1200 pixels count.
VGA — Video Graphics Array — 640 x 480 pixels count.
WEP — Wired Equivalent Privacy — This is a method for encrypting
communication data. The encryption key is created and notified only to the
communicating user, so the communication data cannot be decrypted by a third
party.
XGA — Extended Video Graphics Array — 1024 x 768 pixels count.
WXGA — Wide Extended Graphics Array — 1280 x 800 pixels count.
1080p — 1080p is the shorthand identification for a set of HDTV high-definition
video modes that are characterized by 1080 horizontal lines of resolution and
progressive scan, meaning the image is not interlaced as is the case with the 1080i
display standard.
Zoom Lens — Lens with a variable focal length that allows operator to move the
view in or out making the image smaller or larger.
Zoom Lens Ratio — Is the ratio between the smallest and largest image a lens can