Milestone XProtect Express 2014 - Manual (Page 188)

Milestone XProtect ® Express 2014 Administrator's Manual
www.milestonesys.com 188 Glossary of Terms
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.
HTTP
HyperText Transfer Protocol —standard for
exchanging files across the internet. HTTP is
the standard used for formatting and
transmission of data on the World Wide Web.
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
Express 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 Express server.
The Image Server service is not configured
separately as it is configured through XProtect
Express '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
Used in the MPEG standard for digital video
compression, a keyframe is a single frame
stored at specified intervals. The keyframe
records the entire view of the camera, whereas
the frames between the keyframes record only
the pixels that change. This helps greatly
reduce the size of MPEG files.
M
MAC address
Media Access Control address —12-character
hexadecimal number uniquely identifying each
device on a network.
Matrix
A feature that enables the control of live
camera views on remote computers for
distributed viewing. Once configured, you can
view Matrix-triggered live video in XProtect
Smart Client.
Matrix recipient
A computer equipped with XProtect Smart
Client software and therefore capable of
displaying Matrix-triggered live video.
MJPEG