Originally video surveillance was
done based on analog technology -- closed 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 simply provided what happened
after the fact. The picture quality wasn't great and it relied on human
reliability as well -- someone had to remember to change the tapes regularly, etc.
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 standard TCP/IP communication.
It also provides more intelligent
data mining and information retrieval. If security is an issue, full digital
surveillance also offers the added advantage of data encryption opportunities to
protect against image tampering -- something not possible with analog recording.
Recently, a few companies such as
D-Link and Linksys have also developed fully digital cameras that actually have
completely 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 storage or play-back.
You've probably heard of CCTV
systems, or closed circuit television systems. This is just an example of a
digital video surveillance system and is probably the most popular, too. In the
days of yore, CCTV systems were grainy and in black and white, and have brought
about many a case of mistaken identity. Recent developments, however, have
since improved the quality of CCTV systems, and all digital video surveillance
systems for that matter. You can now be watched in full color on high-tech LCD
monitors while you rob a bank or steal your neighbor's underpants.
There are many types and makes of video surveillance solutions equipment available in the market and includes hidden
cameras, dome cameras, smoke detecting cameras, infrared cameras, and vandal
proof security cameras is Dubai. CCTV systems in Dubai are ever improving and more and more industries
are using these cameras to protect the work environment and promote good work
ethics at the workplace.
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