Harmonic ProView 7100 - Page 209

Glossary
Numerics  A B C  D E F G H I J L M N O P Q
R S T U V W Y 
© 2012 Harmonic Inc. 209 ProView 7000 v.2.6, Rev. E
Hz
See Hertz (Hz).
I
IEEE
Institute of Electrical and Electronics Engineers. The IEEE is a professional organization that develops a
wide variety of standards. The IEEE 802 family of standards defines Ethernet and related
communication systems.
IGMP
Internet Group Management Protocol.
input transport
Also known as a source transport, it contains all input devices for a transport in a single, easy-to-use
place. Input devices can include video tape decks, satellite feeds, and so on.
IP
Internet Protocol.
IP address
An identifier for a computer or device on an Internet Protocol (IP) network. Networks using IP route
messages based on the IP address of the destination. An IP address is a 32-bit number written in dotted
decimal notation: four 8-bit sections, separated by periods, converted from binary to decimal. Each
section is a number from zero to 255.
IRD
Integrated receiver decoder. A device that combines the capability of receiving satellite transmissions
and decoding MPEG-2 transport stream packets.
ISI
Input Stream Identifier
ISO index value
A pointer value into the list of language abbreviations documented in ISO-639. Current values are
online at http://www.loc.gov/standards/iso639-2/langhome.html.
ITU
International Telecommunication Union, a United Nations organization facilitating standardization of
telecommunications and radio/television. It issues documents from either group as “ITU-T” or “ITU-R”
recommendations.
J
joint stereo
Joint stereo signals have a high degree of commonality between the left and right signals which can
improve the amount of compression.