Milestone XProtect Enterprise 2014 Manuel d'utilisateur télécharger pdf (Page 203)

Milestone XProtect

®

Enterprise

2014

Administrator's Manual

www.milestonesys.com

203

Glossary of Terms

Domain Name System—system allowing

translation between alphabetic host names (for

example, mycomputer) or domain names (for

example, www.mydomain.com) and numeric

IP addresses (for example, 192.168.212.2).

Many people find alphabetic names easier to

remember than numeric IP addresses.

Driver

A program used for controlling/communicating

with a device.

DST

Daylight saving time: temporarily advancing of

clocks during the summer so that afternoons

have more daylight and mornings have less.

Dual stream

Some cameras support two independent

streams (which can be sent to the recording

server): one for live viewing and another for

playback purposes. Each stream has its own

resolution, encoding, and frame rate.

DVR

Digital video recorder—device that records

video in a digital format to a hard disk drive

embedded in the DVR itself.

E

Event Server

A server that stores and handles incoming

alarm data and events from all XProtect

Enterprise servers. The Event Server enables

powerful monitoring and provides an instant

overview of alarms and possible technical

problems within your systems.

F

Fisheye

A type of lens that allows the creation and

viewing of 360-degree images.

FPS

Frames per second—measurement indicating

the amount of information contained in a

motion video. Each frame represents a still

image, but when frames are displayed in

succession, the illusion of motion is created.

The higher the FPS, the smoother the motion

appears. Note, however, that a high FPS may

also lead to a large file size when video is

saved.

Frame rate

A measurement indicating the amount of

information contained in motion video—

typically measured in FPS.

FTP

File Transfer Protocol—standard for

exchanging files across the internet. FTP uses

the TCP/IP standards for data transfer and is

often used for uploading or downloading files

to and from servers.

G

GOP

Group of pictures: individual frames grouped

together, forming a video-motion sequence.

Grace period

When you install your system, configure it and

add recording servers and cameras, your

system runs on temporary licenses. These

need to be activated before a certain period

ends. This is the grace period.

GSM

Global System for Mobile communications—a

standard for mobile telephony.

GUID

Globally unique identifier—unique 128-bit

number used to identify components on a

Windows system.

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