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Reference
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English
Glossary
The following is a list of key words used in the use of projectors and image signals and their explanations. Please refer to it when using this
manual. For an explanation of vocabulary used in the menu, refer to "Menu group items and functions” ( ☞ page 30 - 37).
11
Reference
Ceiling mount bracket
The mounting hardware used to hang this unit from the ceiling.
Two types of bracket are available, for high and low ceilings.
Ceiling mount brackets are sold separately.
Cinemascope size
The widest film format in 70 mm film, with an aspect of 2.35:1.
Color spacing
The conversion of YUV color separated signal to RGB signal.
There are two formats for this, BT.601 for SDTV, and BT.709 for
HDTV. This unit switches between them as required.
Component video signal
A method of sending video signals with independent luminance
and color signals. Component video gives a higher image quality
than ordinary composite video because it bypasses mixing and
separating circuits. Component video signal consists of three lines,
the luminance signal (Y), and two color difference signals (P
B/CB,
P
R/CR).
Composite video signal
The most common type of video signal, combining luminance and
color signals in one line. This method requires mixing and
separating processes on both the send and receive sides. Use a pin
cable for connection.
DLP
TM
technology
Digital Light Processing, an image display engine used in
projectors that use the DMD™ chip developed by Texas
Instruments.
DVI terminal
A digital RGB/Component signal is sent differently from a
computer or A/V equipment to this terminal. A 24-pin connector
and cable are used.
D terminal
A cable that allows transmission of all of the signals in composite
video in one cable. This method is used for transmitting image
signals between the latest AV components. There are 5 methods of
transmission, D1-D5. This unit is compatible with D4.
EDTV
Extended-Definition Television, a term used to define systems that
satisfy the following conditions:
•A resolution of 480p or 576p (p stands for progressive scans)
•A 4:3 or 16:9 aspect ratio
HDCP
A technique designed to protect the video transmission between a
DVI or HDMI transmitter and a display device.
HDMI
TM
High-Definition Multimedia Interface, a method of differentially
transmitting digital RGB/component video signal from computers
and home digital equipment.
HDTV
High-Definition Television, a term used to define systems that
satisfy the following conditions:
•A vertical resolution of 720p or 1080i (p stands for progressive
scans, i stands for interlace scans)
•A 16:9 aspect ratio
Interlace
The most common type of scanning used in televisions. It divides a
screen into even and odd numbered fields for scanning, and then
builds an image by combining them into one image (frame).
Keystone Correction
Using the unit at an angle to the screen distorts the projected image
trapezoidally. You can use V Keystone Correction or H Keystone
Correction to electronically correct this distortion.
Letterbox
A method of converting the content of landscape oriented film to a
4:3 signal. You can watch landscape images without trimming them
by adding a black bar to the top and bottom of the screen, however
this sacrifices vertical resolution to some extent.
Progressive
A method of displaying all scanning lines in a frame at once,
reducing flicker noticeable on a larger screen and creating a sharp,
smooth image. This unit uses progressive scanning for progression.
RGB Signal
A method of transmitting color information using a numeric
representation of the primary colors red, green, and blue separately.
When received, it is expressed in various colors by adding a mixing
colors. RGB is widely used for sending and receiving color images
between computers, and requires horizontal and vertical sync
signals.
SDTV
Standard-Definition Television, a term used to define systems that
satisfy the following conditions:
•A resolution of 480i or 576i (i stands for interlace scans)
•A 4:3 or 16:9 aspect ratio
Smart zoom
Expands the left and right sides of a 4:3 image without altering the
center, when you are attempting to project a 4:3 image on a wide
screen format. This creates some distortion at both edges.
Squeeze
A method of compressing film images horizontally to an aspect of
ratio of 4:3 when recording to video medium. The raw image is
oblong, so needs to be passed through a desqueezing circuit to be
projected in it’s original form.
Standby
The state in which the circuit that receives infrared-signals from the
remote control is active, but all other main circuits are turned on.
The unit consumes a small amount of power in this state.
S Video signal
S stands for Separate. A method of sending signals with separate
luminance (Y) and color (C) signals. Use a 4-pin mini DIN
connector and cable for connection.
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