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Glossary
This section briefly explains the difficult terms that are not explained in the
HDCP HDCP is an abbreviation for High-bandwidth Digital Content
text of this guide. For details, refer to other commercially available
Protection.
publications.
It is used to prevent illegal copying and protect copyrights by
encrypting digital signals sent over DVI and HDMI ports.
AMX Device AMX Device Discovery is a technology developed by AMX to
Because the HDMI port on this projector supports HDCP, it
Discovery facilitate AMX control systems for easy operation of the target
can project digital images protected by HDCP technology.
equipment.
However, the projector may not be able to project images
Epson have implemented this protocol technology, and have
protected with updated or revised versions of HDCP
provided a setting to enable the protocol function (ON).
encryption.
See the AMX Web site for more details.
HDTV An abbreviation for High-Definition Television that refers to
URL http://www.amx.com/
high-definition systems which satisfy the following conditions:
Aspect Ratio The ratio between an image's length and its height.
Vertical resolution of 720p or 1080i or greater (p =
Progressive, i = Interlace)
Screens with a horizontal:vertical ratio of 16:9, such as HDTV
screens, are known as wide screens.
Screen aspect ratio of 16:9
SDTV and general computer displays have an aspect ratio of
Infrastructure A method for wireless LAN connection in which devices
4:3.
mode communicate through access points.
Component Video A method that separates the video signal into a luminance
Interlace Transmits information needed to create one screen by sending
component (Y), and a blue minus luminance (Cb or Pb) and a
every other line, starting from the top of the image and working
red minus luminance (Cr or Pr).
down to the bottom.
Composite Video A method that combines the video signal into a luminance
Images are more likely to flicker because one frame is displayed
component and a color component for transmission down a
every other line.
single cable.
IP Address A number to identify a computer connected to a network.
Contrast The relative brightness of the light and dark areas of an image
MHL An abbreviation for Mobile High-definition Link, a standard
can be increased or decreased to make text and graphics stand
for connection interfaces aimed at mobile devices such as
out more clearly, or to make them appear softer. Adjusting this
smartphones and tablets.
particular property of an image is called contrast adjustment.
Images can be transferred at high quality and at high speeds
DHCP An abbreviation of Dynamic Host Configuration Protocol, this
without compressing the digital signal, and also charges
protocol automatically assigns an IP address to equipment
connected devices.
connected to a network.
Progressive Projects information to create one screen at a time, displaying
Gateway Address This is a server (router) for communicating across a network
the image for one frame.
(subnet) divided according to subnet mask.
Even though the number of scan lines is the same, the amount
of flicker in images decreases because the volume of
information has doubled compared with an interlace system.
162


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