When you're shopping nearby for an Ip-based video surveillance system, you will need to be particularly cautious about what exactly you're finding at and what the personel terms mean. How Ip-based video surveillance works is open to interpretation as far as some video surveillance and protection salespeople are involved -- not because they are trying to confuse the issues, but because there is no genuine consensus on what the term "Ip-based" or linked ones such as "networked" or "web-based" means.

Originally video surveillance was done based on analog technology -- accomplished
circuit television (Cctv) and recording on video tapes. This was fine for
recording what was going on, but it didn't broadcast actual live information, so
it wasn't practical for monitoring stores, for instance, from a remote location.
It plainly provided what happened after the fact. The photograph quality wasn't
great and it relied on human reliability as well -- man had to remember to
change the tapes regularly, etc.

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Digital revolutionizes video surveillance

How Ip-based Video guard Works -- Way Beyond Analog

Defender Digital Wireless DVR Security System with 7 Inch LCD Monitor, SD Card Recording and Long Range Night Vision Camera (Black) Best

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Defender Digital Wireless DVR Security System with 7 Inch LCD Monitor, SD Card Recording and Long Range Night Vision Camera (Black) Feature

Digital Wireless Technology - The Phoenix 301-Series comes equipped with Digital Wireless Technology that ensures there is no messy wiring involved when setting the system up.
SD Card Recording - This system includes a 2GB SD card that can capture up to 350 minutes of footage and audio.
Long Range Night Vision - The camera comes equipped with advanced night vision and 18 infrared (IR) LEDs that let you see clearly in the dark, up to 40ft away!
2 Way Intercom Feature - Communicate with visitors or employees from a distance using the 2 way intercom. The monitor and camera have a built-in microphone
7" LCD Monitor - Review your footage easily on the 7" LCD monitor. se the screen saver feature, which displays your choice of one of 5 images on screen, to fit in with the surrounding decor.
7" LCD Monitor - Review your footage easily on the 7" LCD monitor. se the screen saver feature, which displays your choice of one of 5 images on screen, to fit in with the surrounding decor

Defender Digital Wireless DVR Security System with 7 Inch LCD Monitor, SD Card Recording and Long Range Night Vision Camera (Black) Overview

Defender’s PHOENIX 301 system can be used to monitor and record video and audio in any indoor or outdoor space at any time of the day. This wireless plug and play system allows for easy set up in a matter of minutes and the included 2GB SD card can record up to 350 minutes of continuous audio and video footage. The wireless, weather resistant camera included with this system has 18 infrared LEDs that allow you to see up to 40ft away in the dark. You can view your footage through the 7 inch monitor or, for a larger view you can connect the monitor to another television using the included A/V cable. Ideal for monitoring entrances, backyards, valuables and employees, the PHOENIX 301 system can be used in any situation you need.

Customer Reviews

*** Product Information and Prices Stored: Jan 13, 2012 04:49:11

With the Internet revolution and the ever-increasing presence of Local Area
Networks, technology took great strides in video surveillance in the 1990's.
Analog camera tubes were supplanted with Ccd (Charged Coupled Devices) and digital
cameras became affordable for most people.

This mixture meant that video surveillance could do two things: go live
over the Internet or a accomplished network for surveillance and contribute clearer,
crisper images that could be tracked and manipulated easily. For law
enforcement, digital surveillance meant it was much easier to zoom in on images,
track particular scenes and heighten features.

The basics of Ip-based surveillance

A digital camera "views" the scene in front of it, broadcasts the video
images as a digitized signal over a Lan line (Local Area Network) where it's
then transmitted to a computer or server. The server in turn manages all of this
information. Depending upon the software used to manage the digital images, it
can record, display or retransmit the images to everywhere in the world.

The software box can for real be upgraded to allow for analyzing data,
selecting specific "flagged" items to watch for and a host of other functions,
making it a truly customizable protection tool.

True Ip-based digital surveillance uses Ccd cameras that use signal
processing that send packetized video streams over the Lan through a Cat 5 cable
rather than a coax cable network, utilizing greater bandwidth and proper
Tcp/Ip communication.

It also provides more keen data mining and facts retrieval. If
security is an issue, full digital surveillance also offers the added advantage
of data encryption opportunities to safe against image tampering -- something
not possible with analog recording.

Recently, a few fellowships such as D-Link and Linksys have also developed fully
digital cameras that for real have fully integrated, built-in web servers
so that no external computers are needed for operating them. The signal is
transmitted directly to the terminal location for warehouse or play-back.

Halfway there...

The "middle of the road" of video surveillance is upgrading video
surveillance by utilizing a Digital Video Recorder (Dvr). A Dvr system is not
really fully Ip-based, but is step toward the more developed Ip technology. In
actuality, a Dvr system uses the same camera and structures for cabling as the
older Cctv analog systems, but the old Vcrs have been supplanted with Dvr for
storage of the data. The data is converted to digital so that it can be stored
on hard disks, but the quality of the images captured remains analog since this
is how it originated.

When shopping for a system, be sure to ask if the system is digital based on
the recording (Dvr) or on the camera, since many manufacturers think a system
digital by virtue of the Dvr warehouse system even if the camera recording the
images is still analog.

Going all the way

Some people will move to the hybrid models of a Cctv/Dvr system when they
first move beyond an analog system because it seems like the next practical
evolutionary step in video surveillance. However, shifting to this method
largely ignores how Ip-based video surveillance works.

With Cctv/Dvr surveillance you have for real plainly delayed the inescapable by
adding on a relatively new technology (hard disk, digital storage) to an old
technology (analog video over coaxial transmission lines). Rather than keen
forward into something new, you have continued the demise of the old.

Advantages of Ip-based video surveillance

The leap into fully Ip-based technology is the best bang for your buck
both monetarily and in terms of protection by far. Digital surveillance can be
done over a Lan network, of course, but Tcp/Ip transmittal of surveillance makes
sense for remote monitoring of multiple locations and for remote recording of
data onto back-up servers and hard disks for long-term storage.

With Ip-based video surveillance, you can associate your surveillance camera or
cameras to any network or wireless adapter, and you are very flexible in
your placement of the camera itself. A typical Pc-attached video camera, while
providing digital photograph image quality, still has to be within approximately
ten feet of the computer itself.

Set-up of an Ip-based video system is easy -- once you've set up an Ip
address, you're up and running and it's very carport and reliable. Because
this is the technology of the future, it is also upgradeable. You won't be
outgrowing an Ip-based video surveillance system any time soon because new
developments are based on improving this market. Therefore, you will be able to
add on and heighten this system for years to come while older, Cctv+Dvr hybrids
will dead-end and come to be obsolete.

Comparing analog and Ip-based video surveillance

A better way to understand the differences between analog and Ip-based video
surveillance may be to assess the two and how they work:

Analog or Cctv+Dvr video surveillance

o Easy to use -- operates like a Vcr
o Changing cassettes and rewinding normally means human error oftentimes interferes with effectiveness
o Image quality is poor
o warehouse tapes wear out over time
o Broadcasting images live isn't practical
o warehouse is bulky
o Uses analog recording, recording in low-grade photograph quality and inability to quest and track easily
o Adding Dvr systems must be done in 'blocks' of 16 channels

Ip-based video surveillance

o Ip-based recording means instant transmittal of images everywhere in the world
o Can monitor multiple cameras from one remote location
o No decrease in recording quality over time or with repeated replays
o Digital photograph quality far classic to analog
o Ip-base recording is very compressed for easier warehouse and can be transported over a variety of media
o Digital images can be encrypted for protection purposes
o Updates and add-ons are relatively inexpensive through software packages and Internet computer networking
o Adjustable frame rates
o Remote or shared viewing may be done over the Internet or a wireless connection
o proper Ip video compression techniques are used
o Ip surveillance cameras may be added individually or in groups according to your needs

If you are contemplating increased or upgrading video surveillance for your
company or home, comprehension how Ip-based video surveillance works will make
your decision easier. It is the time to come of video surveillance and, although in
the short term may be a bit more expensive, is obviously an investment in
superior quality and flexibility.

This report on "How Ip-based Video surveillance Works" reprinted with
permission.

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Thursday, January 12, 2012