Glossary - Philips HTS3377/51 User Manual

12 Glossary

A
Aspect ratio
Aspect ratio refers to the length to height ratio
of TV screens. The ratio of a standard TV is 4:3,
while the ratio of a high-deÀ nition or wide TV
is 16:9. The letter box allows you to enjoy a
picture with a wider perspective on a standard
4:3 screen.
D
DivX®
The DivX® codec is a patent-pending, MPEG-4
based video compression technology developed
by DivX®, Inc. It can shrink the À le size of digital
video and still maintain the high visual quality.
Dolby Digital
A surround sound system developed by Dolby
Laboratories that contains up to six channels of
digital audio (front left and right, surround left
and right, center and subwoofer.)
50 EN
H
HDCP
High-bandwidth Digital Content Protection.
This is a speciÀ cation that provides a secure
transmission of digital contents between
different devices (to prevent unauthorized
copyright.)
HDMI
High-DeÀ nition Multimedia Interface (HDMI) is
a high-speed digital interface that can transmit
uncompressed high deÀ nition video and digital
multichannel audio. It delivers high quality
picture and sound quality, completely free from
noise. HDMI is fully backward-compatible with
DVI.
As required by the HDMI standard, connecting
to HDMI or DVI products without HDCP
(High-bandwidth Digital Content Protection)
will result in no Video or Audio output.
J
JPEG
A very common digital still picture format. A
still-picture data compression system proposed
by the Joint Photographic Expert Group, which
features small decrease in image quality in
spite of its high compression ratio. Files are
recognized by their À le extension '.jpg' or '.jpeg. '