NetXG
August 16 At: 10:49 am

Internet Network Security Camera

Axis-295 Network Camera Buy and Sell Cisco Network Gear.
A network camera can be described as a camera and computer combined in one unit. It captures and transmits live images directly over an IP network, enabling authorized users to locally or remotely view, store, and manage video over standard IP-based network infrastructure.
A network camera has its own IP address. It is connected to the network and has a built-in web server, FTP server, FTP client, e-mail client, alarm management, programmability, and much more. A network camera does not need to be connected to a PC; it operates independently and can be placed wherever there is an IP network connection. A Web camera, on the other hand, requires connection to a PC via a USB or IEEE1394 port and a PC to operate.

In addition to video, a network camera also includes other functionalities and information being transported over the same network connection, i.e. video motion detection, audio, digital inputs and outputs (which can be used, for example, to trigger alarms or turn on lights), serial port(s) for serial data or control of pan/tilt/zoom mechanisms. Image buffers within a network camera can also save and send images that were collected before an alarm occurred.

Axis-210A Network Camera Axis-216FD-V Network Camera
Buy Cisco Network Gear Now
Purchase Online: Order a Network Camera
Axis-213 Network Camera With a built-in Web server, a network camera do not need a direct connection to a PC or any other hardware or software to capture and transfer images. It operates as a stand-alone unit and requires only a connection to the network.

 

Network camera: Advantages over a PC-based camera


True network camera:
PC-based camera:
  True network camera PC-based camera
 Flexibility Place it anywhere. You can connect the network camera to the network, modem, cell phone, or wireless adapter. The PC-attached camera needs to
be within 3 meter (10 feet) of the PC.
 Functionality Everything needed to stream live video over networks is included in the network camera.  You will need 3 components: Web camera, PC and PC software.
 Installation You set the IP address and you’re up and running.  The installation of drivers and software on the PC is complicated. 
 Ease of use You can administer and view the images using a standard Web browser on any PC. You will need specific software and remote administration
will not be possible. 
 Stability It works without any additional components, to give greater stability.  It depends on the attached PC’s stability.
 Quality High picture quality using Motion JPEG.  Often low-quality components and proprietary streaming techniques.
 Cost The cost of the network camera only.  Total cost of Web camera, PC and PC software.

 

Network camera: Advantages over an analog camera-based system
 

Network camera-based system: Analog camera-based system:

 

   Network camera-based system Analog
camera-based system
 Access As open or closed access as needed. Remote access to live images and
remote administration of a network camera are possible from anywhere using a standard Web browser on any PC.		 Closed circuit. No possibility for remote access.
 Ease of use - You can administer and view the images remotely using a standard
Web browser on any PC. 

- Images can be recorded on a hard disk, enabling easy
search possibilities, easy storage and no image degradation
or wear. 

- The hard disk can be located at a remote location for
security purposes.

 - Remote administration
or monitoring is not possible. 

- Images must be stored on video tape cassettes, which
require constant changing and lots of storage space. The
quality of recorded images deteriorate over time.

- The video cassette recorder must be located near the
camera. This could potentially enable unauthorized persons
to have access to the video tape.
 Quality Digital images do not lose quality in transmission or
storage. A digital picture is created using Motion-JPEG.
Once created, the image is free from degradation. Each frame within
a video stream is sharp.		 Image quality is lost when using long cables and the
resolution of a magnetic tape is normally quite low. In
addition, the quality of the recorded video deteriorates over time.
 System
 requirements		 Everything needed to stream live video over networks is included in the network camera.
Simply connect the network camera to a network. View, record
and administer from any networked PC (located
anywhere). 		 Connection to a coaxial cable, to a multiplexer, to a video
or time lapse recorder, and to a locally placed CRT (cathode
ray tube) monitor.
 Installation Simply connect a network camera to the nearest network connection and assign an IP address. Attach a coax cable to each and every camera and connect to the multiplexer.
 Cabling

One standard UTP (unshielded twisted pair) network
cable can forward images from hundreds of network cameras
simultaneously.

 
One cable can transport video signals from only one
camera at a time. If you have two cameras, you have to have
two cables. This often means large cable trunks filled with
thick and sensitive cables that are connected to a locally
placed control room.
Scalability Adding more network cameras to the system is easy. Very difficult. Each analog camera requires its own cable.
Image quality is lost when using long cables.
 Cost A high quality network cable typically costs 30 to 40
percent less than a standard coaxial cable. 

A network cable
can also support hundreds of network cameras and other
devices.

An IP-based network
infrastructure is often already in place, which means the
cost is reduced to only that of the network camera(s). 

 Expensive coaxial cables. A classic RG59 75 Ohms coaxial
cable typically costs 30 to 40 percent more than a high
quality network cable. 

In addition, more cable is required. Each analog camera requires its own
cabling.

High labor and maintenance demands, plus cost of the
analog camera(s), video tape recorder and video tape
cassettes.
Digg IT

This entry was posted on Thursday, August 16th, 2007 at 10:49 am and is filed under Net Camera, Security. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

« Cisco Catalyst 3750 Series Switch Quick Look
Cisco Catalyst 3560 Series Switches »

2 Responses to “Internet Network Security Camera”

  1. 1
    Advantages of network security Says:

    Advantages of network security…

    Most magazines you find have all you\’re looking for….

    April 2nd, 2008 at 2:51 pm
  2. 2
    Twisted Pair Software. | 7Wins.eu Says:

    […] in Digigami VBR HD MPEG-2 Encoder better than H.264? | BitBurners.com (BETA) | We Burn a Bit!Internet Network Security Camera | NetXG - News and Reviews Tags basic electronic tutorial basic electronic electronic tutorial learn electronic electronics […]

    July 1st, 2008 at 9:29 am

Leave a Reply

© 2009 NetXG - News and Reviews | Entries (RSS) and Comments (RSS)