Fujitsu IP-920 E/DC, Руководство пользователя по оборудованию, Страница: 99 / 106

Glossary and Index
IP-920E/DC
85
Glossary
Alarm Log
Record of errors that have occurred on devices
and communication lines
BNC (Bayonet Neill Con
celman)
Type of coaxial connector whose characteristic
impedance is 75 Ω . A locking system called a
bayonet lock is used, ensuring cables are easy
to connect and remove, and secure connections.
The connector is compact and lightweight and
has a frequency range compatible with the high
frequency of 4 GHz, so it can be used for
measuring instruments and digital audio
equipment.
Class III Equipment
Equipment that does not generate higher
voltage than SELV (Safety Extra-Low Voltage)
by depending on SELV power source for
protection against electric shock.
Browser
General name for programs that support users
who want to select desired options from
available options. Using a browser, a user can
trace links on the Internet to access such
multimedia information as text, audio, and video
by simply using a pointing device (e.g., mouse)
to select items.
DCE (Data Circuit terminating Equipment)
Data circuit terminating equipment. DCE is a
term from ITU-T. Similar to modems and DSUs,
it changes signals to waveform that are suitable
for their transmission routes.
DHCP (Dynamic Host Configuration Protocol)
This is the protocol to assign IP address
dynamically when startup and to release it when
shutdown. The IP address prepared by DHCP
server is assigned.
DTE (Data Terminating Equipment)
Data terminating equipment. It is one kind of
terminal equipment (e.g., PC). DTE is a term
from ITU-T and is paired with DCE.
Embedded Audio
It is the scheme to embed (multiplex)
AES/EBU digital audio signals in the auxiliary
data area (blanking area) of the serial digital
signal.
FG (Frame Ground)
Ground for a cabinet
Flow Control
Procedure for controlling the flow of data
between two devices. Its purpose is to prevent
data loss when this equipment buffer becomes
full.
Gateway
Equipment that connects network systems that
use different protocols. It basically converts
one protocol into another to support operation
between two networks. In a broader sense, a
gateway sometimes means a device that
transfers information between any two networks.
HD-SDI (High Definition television – Serial
Digital Interface)
HD-SDI is the serial digital interface to
transmit HD (High Definition) video signal,
which transmission rate is 1.485 Gbps. It can
transmit multiplexing HD video signal, PCM
audio signal and data signal like time stamp.
HDMI (High Definition Multimedia Interface)
One of the multimedia interfaces integrated the
audio, video and control and communicate each
other.
H.264
This is one of the video compression coding
systems standardized in ITU (International
Telecommunication Union) in May, 2003. It is
also standardized as a part of MPEG-4 (MPEG-4
part 10 Advanced Video Coding) in ISO
(International Organization for Standard).
Therefore, it is commonly called H.264/MPEG-4
AVC or H.264/AVC, showing both of parties.
This technology is used for the various
applications from the low bit rate and low
resolution like the mobile TV to the high bit rate,
high resolution like HDTV. It is improved that the
data capacity is half comparing MPEG-2 used
wide spread.
HTTP (Hyper Text Transfer Protocol)
Protocol used for sending and receiving files
and other data between a WWW server and
WWW browser
Hub
Concentrator required for using 10BASE-T or
100BASE-TX as a local area network (LAN)