Epson EH-TW570, Руководство пользователя

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