Milestone XProtect Professional 2014 - Manual (Page 203)

Milestone XProtect ® Professional
2014
Administrator's Manual
www.milestonesys.com 203 Glossary of Terms
Globally unique identifier —unique 128-bit
number used to identify components on a
Windows system.
H
H.264
A standard for compressing and
decompressing video data (a codec). H.264 is
a codec that compresses video more
effectively than older codecs, and it provides
more flexibility for use in a variety of network
environments.
Hardware device
When you add a digital camera to your system,
you are not adding the camera itself only, but
rather hardware devices. Hardware devices
have their own IP addresses or host names.
Being IP-based, your system primarily
identifies units based on their IP addresses or
host names.
Even though each hardware device has its
own IP address or host name, you can attach
several cameras, microphones and speakers
to a single hardware device and share the
same IP address or host name. This is
typically the case with cameras attached to
video encoder devices.
You can configure each camera, microphone
and similar channels on the hardware device
individually, even when several of them are
attached to a single hardware device.
Host
A computer connected to a TCP/IP network. A
host has its own IP address, but may
—
depending on network configuration —also
have a host name to make it easily
identifiable.
Hotspot
Particular position for viewing enlarged and/or
high quality video in the Smart Client.
I
I/O
Input/Output: refers to the communication
between a computer and a person. Inputs are
the signals or data received by the system and
outputs are the signals or data sent from it.
I-frame
Short name for intra-frame. Used in the MPEG
standard for digital video compression. An I-
frame is a single frame stored at specified
intervals. The I-frame records the entire view
of the camera, whereas the frames that follow
(P-frames) record only the pixels that change.
This helps greatly reduce the size of MPEG
files. An I-frame is similar to a keyframe.
Image Server
A service that handles access to XProtect
Professional for remote users logging in with
Smart Client The Image Server service does
not require separate hardware as it runs in the
background on the XProtect Professional
server. The Image Server service is not
configured separately as it is configured
through XProtect Professional 's Management
Application.
IPIX
A technology that allows the creation and
viewing of 360-degree panomorph (fisheye)
images.
J
JPEG
(Also JPG) Joint Photographic Experts
Group
—widely used lossy compression
technique for images.
K
Keyframe