Appendix
79
Glossary
This section briefly explains the difficult terms that are not explained in context in the text of this guide. For
details, refer to other commercially available publications.
HDCP
HDCP is an abbreviation for High-bandwidth Digital Content Protection. It is used to pre‐
vent illegal copying and protect copyrights by encrypting digital signals sent over DVI and
HDMI ports. Because the HDMI 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.
HDMI
™
An abbreviation for High Definition Multimedia Interface. This is the standard by which
HD images and multichannel audio signals are digitally transmitted.
HDMI
™
is a standard aimed at digital consumer electronics and computers. By not com‐
pressing the digital signal, the image can be transferred at the highest quality possible. It
also provides an encryption function for the digital signal.
HDTV
An abbreviation for High-Definition Television. This refers to high-definition systems
which satisfy the following conditions.
•
Vertical resolution of 720p or 1080i or greater (p = Progressive, i = Interlace)
•
Screen aspect of 16:9 Dolby Digital audio reception and playback (or output)
MHL
An abbreviation for Mobile High-definition Link, which is a standard high-definition in‐
terface that enables high-speed transfer of video signals on mobile devices.
It is a standard targeting smartphones and tablets that transfers uncompressed digital
signals without loss of quality and also enables simultaneous charging of such devices.
NTSC
An abbreviation for the National Television Standards Committee. A terrestrial analog
color broadcasting method. This method is used in Japan, North America, and Latin Amer‐
ica.
PAL
An abbreviation for Phase Alternation by Line. A terrestrial analog color broadcasting
method. This method is used in various Western European countries (with the exception
of France), Asian countries such as China, and Africa.
SDTV
An abbreviation for Standard Definition Television. This refers to standard television sys‐
tems which do not satisfy the conditions for HDTV High-Definition Television.
SECAM
An abbreviation for SEquential Couleur A Memoire. A terrestrial analog color broadcasting
method. This method is used in France, Eastern Europe, the former Soviet Union, the
Middle East, Africa, and so on.
SVGA
A screen size standard with a resolution of 800 (horizontal) x 600 (vertical) dots.
SXGA
A screen size standard with a resolution of 1,280 (horizontal) x 1,024 (vertical) dots.
VGA
A screen size standard with a resolution of 640 (horizontal) x 480 (vertical) dots.
XGA
A screen size standard with a resolution of 1,024 (horizontal) x 768 (vertical) dots.
YCbCr
In component image signals for SDTV, Y is the brightness, while Cb and Cr indicate the
color difference.
YPbPr
In component image signals for HDTV, Y is the brightness, while Pb and Pr indicate the
color difference.
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.
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