Harmonic ProView 7000 User Manual page 203

Glossary

Numerics A B
 
DIN connector
A plug and socket used to connect a variety of devices. DIN plugs are about 1/2-inch in diameter,
with pins inside in a circular pattern. See also
DiviTrack™
Harmonic's proprietary closed loop statistical multiplex system. It is deployed using a variety of
implementations, which are typically designated by letters appended to DiviTrack, such as
DiviTrackIP. The DiviTrack system gives Harmonic's encoders and multiplexes advanced warning
of upcoming material by using LookAhead™ technology, resulting in outstanding compression
efficiency, higher quality video, and better bandwidth utilization.
DiviTrack complexity
The average video complexity of the input video source during the sampling period. The range is
1 to 100.
This is an indication of the relative difficulty of compressing a video source. The ratio of
DiviTrack complexity values between two sources is intended to indicate the relative bit rate
required to code the two sources with equal visual quality. The value is used to assign bit rates to
specific segments of a video sequence to attain constant visual quality. Usually, high complexity
requires more bits to compress the video to achieve good quality.
DiviTrackIP
Harmonic's DiviTrack system deployed over IP interfaces
DiviTrackMX
Harmonic's DiviTrack system deployed internally within a single multichannel encoder.
DiviTrackXE
Harmonic's DiviTrack system deployed over ASI interfaces.
DLL
Dynamic Link Library. Typically in software applications, a specific function or set of functions
stored as a separate file. The main application loads the file only when needed.
DLM
A card for the MN20 multiplex.
DNS
Domain Name System.
DOM
A card for the MN20 multiplex which. transmits MPEG-2
an interface with a
ATM
downconverter
A device used to lower one or more high-frequency signals to an intermediate range. See also
.
© 2011 Harmonic Inc.
C D E F
    
Q R S T
  
physical interface.
DS3
G H I J
   
U V W Y
   
mini-DIN connector
Transport Stream
203
L M N O
   

.
packets over
ProView 7000 v.2.4, Rev. A
P

LNB