As the name implies, Closed Circuit Television (CCTV) is a
system in which the circuit is closed and all the elements are
directly connected. This is unlike broadcast television where any
receiver that is correctly tuned can pick up the signal from the airwaves.
Directly connected in this context includes systems
linked by microwave, infrared beams, etc. This article introduces the main
components that can go to make up CCTV systems of varying complexity.
The Applications for CCTV
Probably the most widely known use of CCTV is in security systems and such applications as retail
shops, banks, government establishments, etc. The true scope for applications is almost unlimited. Some
examples are listed below.
The list is almost endless and only limited by the imagination.
The starting point for any CCTV system must be the camera.
The camera creates the picture that will be transmitted to the control
position. Apart from special designs CCTV cameras are not fitted with
a lens. The lens must be provided separately and screwed onto the front
of the camera. There is a standard screw thread for CCTV cameras,
although there are different types of lens mounts.
Not all lenses have focus and iris adjustment. Most have iris adjustment. Some very wide angle lenses do
not have a focus ring. The 'BNC' plug is for connecting the coaxial video cable. Line powered cameras do
not have the mains cable. Power is provided via the coaxial cable.
This has been an introduction to some of the fundamentals of CCTV. Recent developments have made
some very sophisticated systems possible. These include concepts such as multiple recording of many
cameras, almost real time pictures over telephone lines, true real time colour pictures over the ISDN
telephone lines, switching of hundreds, even thousands of cameras from many separate control positions
to dozens of monitors, reliable detection of movement by electronic evaluation of the video signal,
immediate full color prints in seconds from a camera or recording, the replacement of manual controls by
simply touching a screen.
How CCTV surveillance systems work
During the agreed monitoring periods, our remote monitoring
stations monitor every activity on the client site. The video images
of the activities taking place in the premises are available instantly
to our remote monitoring station. Unlawful activities on the client
site are visually verified at the remote monitoring station. This will
reduce the headache of the police authorities a lot since only the actual
incidents are reported to the police. The "speak to site" audio facility
from our remote monitoring station enables us to keep away potential
trespassers, thus preventing incurrence of such incidents.
The images and information received from CCTV cameras and detection
devices are monitored by experienced professionals. On detection of
any suspicious or fraudulent activity in the monitored sites, the professionals
at remote monitoring stations initiate appropriate response which has
previously been agreed upon with the client.
Hi-Tech CCTV Monitoring has several mission critical servers at the heart of its remote monitoring
systems with multiple processors and multiple hard drives. They constantly take each other’s back up
for maximum security and permanently monitor the remote surveillance systems in the field. All these
systems enable us to offer many advantages such as continuous recording, higher image quality, faster
image search and retrieval, superior archiving capabilities, instant playback, simultaneous playback,
record and archive capability to the end user.
In today’s scenarios and environment security measures play
a very important role in managing a setup or a gated community,
which includes offices, schools, colleges, factories etc. Current
methods of deploying these facilities are the conventional
security guards. However,info reliability on such manpower cannot
prove hundred percent accurate.
In order to overcome the errors caused due to manual
management of security surveillance, Coresonant provides
highly accurate CCTV/IP Cameras for effective
and constant monitoring. These cameras can monitor movements at varied
distances depending on the type of Camera used.
Coresonant also provides the uniqueness of integration of the camera software
with any existing client applications.