Glossary - Cisco D9054 Installation And Operation Manual

Glossary

List of Terms and Abbreviations
AAC LC
ASI
Aspect ratio
CBR
DCA
DVB
EIA
GOP
GUI
HD-SDI
IP
LED
MCA
MDI
MPEG
NIT
PIP
PSI
QAM
4038938 Rev A
AAC Low Complexity
Asynchronous Serial Interface. A 270 Mbit/s data stream
similar to the 270 Mbit/s SDI signal. Note that the 270 Mbit/s
is only the ASI rate. You may put in any MPEG stream from
about 1.5 Mbit/s to 120 Mbit/s.
The width-to-height ratio of an image. A 4:3 aspect ratio means
the horizontal size is a third again wider than the vertical size.
Standard television ratio is 4:3 (or 1.33:1). Wide screen DVD
and HTDV aspect ratio is 16:9 (or 1.78:1).
Constant Bit Rate
Dual Channel Audio card
Digital Video Broadcasting
Electronic Industries Association
Group Of Pictures. A GOP is a picture sequence which can be
coded as an entity. For instance, it is possible to cut between
GOPs. For that reason, the first picture in a GOP has to be intra-
coded (I-picture). Time codes are carried on GOP level.
Graphical User Interface
High Definition Serial Digital Interface
Internet Protocol. The TCP/IP Transmission Control Protocol/
Internet Protocol is the basic communication language or
protocol of the Internet.
Light Emitting Diode
Multiple Channel Audio card
Media Dependant Interface
Moving Picture Experts Group (or often Motion Picture
Experts Group). A working group under ISO/IEC and its set of
standards for coding of moving pictures and associated audio.
Standards are MPEG-1 and MPEG-2.
Network Information Table. Provides information about the
physical network.
Picture in Picture
Program Specific Information. Normative data necessary for
the demultiplexing of TSs and the regeneration of programs.
Quadrature Amplitude Modulation. QAM is a method of
D9054 HDTV Encoder Installation and Operation Guide
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Glossary-1