7
Glossary
CCD
(Charge Coupled Device) —
an integrated circuit which has the
ability to respond to light.
CCITT
(Consultative Committee
for International Telephony and
Telegraphy) — International
organization for communications
standards based in Geneva,
Switzerland.
DVI
(Digital Video Interactive) —
The Intel
®
family of digital video
and audio products.
Digitizer
— a device used to
convert analog video signals to a
digital format for use on a
computer system.
H.261
— a CCITT video codec
standard using intraframe and
interframe compression to transmit
video over Px64 ISDN lines.
JPEG
(Joint Photographic Experts
Group) — standards committee
attempting to define a standard
algorithm for the digital
compression and decompression
of still images.
MPEG
(Motion Picture Experts
Group) — standards committee
working on algorithm standards
for compressing video images.
NTSC
(National Television System
Committee) — the North
American television standard,
which uses 525 lines of resolution.
Also used in Central America,
South America, and parts of Asia.
PAL
(Phase Alternating Line) —
the European television standard,
which uses 625 lines of resolution.
QuickTime
— a system extension
to the Apple
®
System 7
™
operating
system which includes compression
schemes for time-based data such
as graphics, animation and video.
RS170
(Electronic Industry
Association Recommended
Standard 170) — the standard
for NTSC composite video.
Video for Windows
— The
Microsoft
®
multimedia extensions,
which allow a computer running
Windows
™
to control animation,
sound and video devices.
5. Glossary