2. CCTV System
Closed-circuit television (CCTV) System is the use of
video cameras to transmit a signal to a specific, limited set
of monitors. It differs from broadcast television in that the
signal is not openly transmitted, though it may employ
point to point wireless links. CCTV is often used for
surveillance in areas which need security, such as banks,
casinos, and airports or military installations.
3. CCTV Cameras
A security camera is used in surveillance to
monitor public or private areas that need
to be monitored for security reasons.
Modern security cameras use closed-circuit
television (CCTV) technology, which
employs video cameras that transmit signals
to a specific limited set of monitors.
4. CCTV Cameras History
• 1942 – First CCTV security camera surveillance system installed. German
engineer Walter Bruch was responsible for the design and installation of
the CCTV security camera surveillance system.
• 1956 – First VCR produced by Ampex Corporation team led by Charles
Ginsburg. 19 year old engineer Ray Dolby was also part of the team. Built
for commercial business use.
• 1960’s – First digital camera signals used in cameras over analog
• 1972 – First VCR for home use produced by Philips.
• 1996 – The first IP camera was released in 1996 by Axis Communications.
• 1998 – First consumer digital video recorders (DVR) released to the public.
5. How Do CCTV Cameras
• CCTV camera systems
includes one or more cameras
which are used to send video
images and audio data to a
monitor. Essentially, these
camera systems use cameras
to transmit the signals to a
main hub which then records
that data for later viewing or
live viewing if you have full
time security personnel on
6. Types Of CCTV Cameras
CCTV cameras are being installed everywhere for purpose
of security and crime prevention and detection. There
are many types of CCTV cameras are available for this
purpose. These are:
• Indoor Camera
• Outdoor Camera
• IR Day/Night Camera
• Dome Camera
• Bullet Camera
• Hidden Camera
• Pan Tilt Zoom Camera
7. Indoor Camera
Indoor Camera as its name
suggests used for indoor
security mechanism. These
are suitable for security in
homes, schools, offices,
8. Outdoor Camera
Outdoor camera is used for
outdoor places. They are
mostly used for entry and
exit points with limited
night lighting. These
Cameras have hard shell
9. IR Day/Night Camera
IR Day/Night cameras are
used for high alert
security areas where
surveillance needs to
happen day and night.
These cameras are used
by military personals, in
parking lots and high
10. Dome Camera
Dome cameras are installed
inside a dark dome and are
designed in a way that they
go unnoticed by visitors.
These cameras can be rotated
and tilted manually. Dome
cameras are used in public
places like railway stations,
bus terminals, and other areas
where there is a huge
gathering of people.
Bullet cameras are
placed inside Bullet
shaped housing, and
they are used in
as well as
they are small in
size, have an
12. Vandal Proof Camera
Vandal Proof cameras are used as
outdoor security cameras. These
cameras are sheltered within
solid material and covered by a
“hub” of break-proof glass
which doesn’t affect the quality
of the video. It is difficult to
break these cameras and this
makes them perfect for high
13. Hidden Camera
Hidden cameras are compact in
size and are used for secret
monitoring. They are usually
installed in public places like
department stores, theatres,
clubs, etc. Hidden cameras
have a built-in recorder that
records and broadcasts
14. Pan Tilt Zoom Camera
Pan-tilt-zoom camera offers
the ability to view and zoom
in all directions. We can even
set the camera to
automatically rotate to
different fields of vision.
15. Types Of CCTV Systems
CCTV Systems are broadly divided into two types. These
• Wired CCTV System
• Wireless CCTV System
16. Wired CCTV System
Wired CCTV systems connect the camera to the recording
device and monitor with the help of standard coaxial cables
or Unshielded Twisted Pair(UTP) cables or fiber optic cables.
The image data is usually transmitted over a coaxial cable.
The signal transmitted over these cables is then fed into a
monitor or set of monitors if the image needs to be visible in
17. Wireless CCTV System
Basically, Wireless CCTV systems are similar to wired CCTV
systems. The difference is that a radio transmitter is attached
to the camera. A radio receiver then attached to the input
on the monitor system or computer. Wireless systems are
useful when the distance between the camera and the
monitor is too far to be practical for a cable run.
18. Uses Of CCTV
CCTV is commonly used for a variety of purposes, including:
• Maintaining perimeter security in medium-to-high-secure
areas and installations.
• Observing behavior of incarcerated inmates and potentially
dangerous patients in medical facilities.
• Traffic Monitoring
• Building and ground security.
• Overseeing locations that would be hazardous to a human.
for example, highly radioactive environment.
• Obtaining a visual record of activities where it is necessary to
maintain proper security. for example, in banks, casinos, or
19. Advantages Of CCTV Camera
• Deters Crime: The presence of CCTV camera system for
surveillance will reduce petty thefts and vandalism in shops, malls
and other public places.
• Helps Maintain Records: The images and videos captured by
a CCTV camera system are often recorded and stored into a
• Protects Employees: This is particularly helpful in customer
service centers. The employees providing customer service may
sometimes be subjected to verbal abuse or physical attacks.
CCTV camera system helps to identify such instances and act
immediately. It is also helpful to keep a tab on the activities of the
• For Evidence in Lawsuits: In legal cases of thefts and other
forms of crime, videos and images provided by the CCTV camera
system can serve as a valid proof and evidence against the
20. Disadvantages of CCTV
• Do Not Work Always: CCTV camera system cannot monitor
every area of your office or home at all times. Hence it cannot be
considered as a foolproof method for crime prevention.
• Privacy Concerns: Invasion of privacy is the major issue when it
comes to any security system device like the CCTV camera system.
It lowers the employee morale and hampers productivity at times.
Constant monitoring of every activity might put the workers ill at
• Initial Costs: The initial costs incurred per camera are high. The
installation may also increase the initial expenditure. It depends
upon the complexity of the CCTV camera system as well.
21. The Future Of CCTV
The future of CCTV is – IP CCTV. IP CCTV stands for
Internet Protocol – Close Circuit Television. With IP CCTV
the video management has become so simple. You can
store and retrieve both analog and digitally recorded video
footage and access it via an internet connection anywhere
in the world. Especially with the growth of Cloud
Computing, the IP CCTV has seen a massive boom.
To conclude the use of CCTV cameras has clear benefits. When
used in moderation, under the correct guidance, Surveillance
cameras can be invaluable in aiding the police in their
investigations. CCTV can also act as a twenty-four hour police
presence, helping to make the public feel safer. If used excessively
however, the proliferation can lead to an invasion of privacy and a
violation of human rights. The cost of the cameras has also been an
issue that has caused many debates as to whether the cost is worth
the results. There needs to be reform into how the authorities use the
existing surveillance cameras to enhance their effectiveness to their
impact on crime.