Thompson ViBE EM4000, User Manual

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Glossary
ViBE EM4000 — Release 1.10 245
User Manual — 46073586AB02
SMPTE Society of Motion Picture and Television Engineers.
A Standards Organization devoted to advancing theory and application in
motion imaging, including film, television, video, computer imaging, and
telecommunications.
SNG Satellite News-Gathering.
SNMP Simple Network Management Protocol.
SNMP provides a means to monitor and control network devices, and to
manage configurations, statistics collection, performance, and security.
SNMP network management is based on the client and server model. Each
managed host runs a process called an agent. The agent is a server
process that maintains the Management Information Base (MIB) database
for the host. SNMP uses ports 161 and 162.
SNTP Simple Network Time Protocol.
SPTS Single Program Transport Stream.
SRTP Secure Real Time Transport Protocol.
StatMux Statistical Multiplexing
Statistical multiplexing is a proven technique used to dynamically assign
compression bitrates based upon video complexity and motion
requirements of individual channels. The principle of statistical
multiplexing is that a group or “pool” of encoders shares a fixed quantity
of bandwidth. The bandwidth is allocated on a frame by frame basis by a
centralized controller (multiplexer) so the encoder with the most complex
video is allowed to borrow more bandwidth from the pool of encoders
with less difficult video.
STB Set-Top Box.
A device that provides access to the Broadband broadcast or Internet and
displays information on a TV screen.
STT System Time Table (ATSC).
SVC Scalable Video Coding.
SVC is the name for the Annex G extension of the H.264/MPEG-4 AVC video
compression standard. SVC standardizes the encoding of a high-quality
video bitstream that also contains one or more subset bitstreams. A subset
video bitstream is derived by dropping packets from the larger video to
reduce the bandwidth required for the subset bitstream. The subset
bitsteam can represent a lower spatial resolution (smaller screen), lower
temporal resolution (lower frame rate), or lower quality video signal.
Switch (Network) A network switch is a computer networking device that connects network
segments.
An Ethernet switch operates at the data link layer of the OSI model to
create a separate collision domain for each switch port. With 4 computers
(e.g., A, B, C, and D) on 4 switch ports, A and B can transfer data back and
forth, while C and D also do so simultaneously, and the two conversations
will not interfere with one another.