NVR
1
Introduction
What is NVR?
NVR stands for Network Video Recorder. NVR is a collection of hardware and software components that
enables full digital, live, and recorded video surveillance over the Internet or Local Network from any
connected computer.
NVR consists of three major components:
NVR device
– is an intelligent storage and authentication server.
In theory it can have unlimited number of IP-video/audio suppliers (such as
IP-cameras, Digital Video Recorders, or IP-Servers) logically attached to it.
Any device that is attached could be used by NVR. Video/audio source or
source of the remote event (motion events or remote I/O port event) are
examples of attached devices.
NVR is also an authentication server for the workstations with Remote NVR Client.
Remote NVR Client
– a software that can be used to see live video/audio, control
cameras, search archive database and playback the archive.
IP-Video Device
– supplies video/audio to the rest of the system.
NVR device structure (in full configuration):
NVR Services
-
Authentication Server
-
Authenticates remote users connected to NVR through
the Remote Client or Archive Viewer
-
Creates statistics about the remote users connections
-
Recorder -
Writes information from each video input in to the
video archive according to the schedule
-
FTP Server
-
Receives FTP-streams from cameras (if set) and writes
information in to the video archive
-
Raises an alarm when it receives an alarm sequence
from camera
-
Touring module
-
Moves the camera according to the tour schedule
-
Remote I/O Listener (Click
on “Start Test”, and the “Port
Test” window will appear
(Fig. a.).
-
Monitors remote inputs on I/O block of the camera
-
The main purpose are to test for correct Hardware and
Software settings
-
Port test
provides information about the camera that is
sending data (Data could be just the connection signal
or the signal about any alarm events.) Fig. b.
-
Check Alive module
-
Checks to see if camera is online and video inputs are
active
-
Check Drive Module (It is
used for testing purposes)
Fig. c.
-
Checks to see if there is enough space for the NVR
Video archive
-
Also checks the Archive Storage Path
-
Alarm Central
-
Responsible for raising alarm using:
-
Voice
-
Phone (analog line with voice modem
installed)
-
(Note: Sender name must be put in
double quote).
Summary of Contents for Nework Video Recorder
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