December 2nd, 2009 
Christoper Kaunisto CCTV (Closed-Circuit Televsion) is the utilization of video cameras to transmit live recorded data to a set of monitors. Maintained in a closed loop so that there is completely no other system can access. This device is commonly used in places that need monitoring and constant observation.
There are plenty of things that can be monitored with the CCTV cameras: commercial spaces, sites, deposits, safes, offices, restaurants, employees, traffic, own home, flat, children’s room, old parking, tourist areas, access areas and any place, room or area of interest that require oversight.
Along with technology development and transition to digital, system costs have fallen considerably. The main criteria for qualification and types of video surveillance systems are:
- Types cameras based on position: indoor and outdoor – Interior room types: miniature, hidden, box, bullet, dome, IP – Types outdoor rooms: box, bullet, dome, wireless – Rooms based on lens types: Wide-angle (large angles) and normal – Room types based on sensor: CMOS, CCD, color, black & white
CCTV behavior
The CCTV camera registers the data and it transmit it to the server. The server gathers data and stores or displays them openly on certain screens. Of course, the image can be accessed online, depending on needs and system. If you have one, a server can choose a stand-alone DVR (Stand Alone Digital Video Recorder).
How to realize transmission from the server room?
Setup 1: UTP Cable Setup 2: coaxial cable Setup 3: Wireless Setup 4: Fiber Optic
The decision should to be taken depending on the available budget.
Where does it work?
The CCTV cameras can be inside but also outside. Whether they are indoor or outdoor, some are resistant while others do not, some may see in the dark using infrared, others not.
The orientation of the cameras is crucial to the effectively see the full area under surveillance. The angles must be correct. The right power supply to use. Figure out if the camera needs movement whether vertical, horizontal or both. Calculate the optimum distance. All these small details are needed when installing CCTV cameras.
The CCTV camera is IP supported and therefore it is using a 32 bit number that is exceptional and facilitates like a network address. The cameras will be linked all the way through the network and they can be maneuvered from all over the globe because they have a worldwide unique IP address.
The CCTV cameras are digital and this is the reason they offer a very high quality of the image and all the information is digitally stored on the hard disk. Thus, there will be no danger of degradation of the quality of the image, like it might happen with the analog equipment. The method the user needs to search the images is very sophisticated and it does not resemble the analog systems. All the CCTV system is driven by a software and thus you can access a certain moment that interests you instantly. You will not need to rewind or fast forward a tape anymore for finding the information that you need.
Viewing the images almost everywhere is one of the advantages of CCTV IP. You can check up on things practically anywhere and anytime giving a sense of peace and the feeling of being protected even away from home.
With further technological developments, CCTV in the future will certainly have many uses and will be used on a greater scale. Its implementation in mega cities paved the way to gaining worldwide recognition. London for example greatly benefited from this system. CCTV cameras are highly adaptable in different environment and there is no wonder why security manufacturers will involve it in many projects and developments. CCTV systems and hidden cameras are very important in homes for protection and safety of all those who you love. Investing in CCTV cameras are better than to suffer the consequences of having none.
A hidden camera presents important choices in reaching covert surveillance. Hidden cameras are helpful tool and will continue to be a top option.
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