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GLOSSARY
47
composite video
A video signal in which all the image
information (color, brightness, line, field, sync,
etc.) are mixed together. Cross-color artifacts
become apparent in composite video.
dynamic IP address
A dynamic IP address is an address that
changes every time a user logs into their ISP
(Internet service provider). This makes their
address more secure, as it is harder for
unauthorized users to access the address
should they come across it via the Internet. It
also allows a user to track down the source of
an unwanted message.
Electronic Industries Association (EIA)
Group which defines electronic standards in
the U.S.
H.323
An ITU-T standard that describes the
protocols for the transmission of video and
audio via LANs (Local Area Networks).
H.324
An ITU-T standard that describes the
protocols for the transmission of video and
audio via standard telephone lines.
Hz
Hertz, a frequency measurement unit used
internationally to indicate one cycle per
second.