28
Progressive scan
The progressive scan displays twice the number
of frames per second than in an ordinary TV
system. It offers higher picture resolution and
quality.
W
WMA
Windows Media™ Audio. Refers to an
audio compression technology developed by
Microsoft Corporation. WMA data can be
encoded with Windows Media player version 9
or Windows Media player for Windows XP. Files
are recognized by their le extension ‘.wma.’
11 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-de 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.
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 le extension ‘.jpg’ or ‘.jpeg.’
M
MP3
A le format with a sound data compression
system. MP3 is the abbreviation of Motion
Picture Experts Group 1 (or MPEG-1) Audio
Layer 3. With the MP3 format, one CD-R or
CD-RW can contain about 10 times more data
than a regular CD.
P
PBC
Playback Control. A system where you navigate
through a Video CD/Super VCD with on-screen
menus that are recorded onto the disc. You can
enjoy interactive playback and search.
EN
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