what is the principle behind the working of CCTV? and how does it work?

Question

i would like to know the connections in the CCTV how it works what is the principle on which it work and the future of CCTV. the details i need should be based on Physics.

Answer 1

CCTV is simply normal TV without a broadcase. The camera puts out a video signal that's the same video signal that your TV displays. The only difference is that there's no conversion to RF and back as there is with standard broadcast TV.

I suggest that rather than waiting for someone to do your research for you, you should get off your metaphorical butt and start doing the work:
http://en.wikipedia.org/wiki/Closed-circuit_television
http://electronics.howstuffworks.com/tv.htm

Answer 2

Why? If that's a fear suspect is wearing a masks, the secret provider is conscious who it's going to be, they are merely making the secret centers job greater basic no? If that's a pair of individual being picked out on CCTV then that's yet another subject. as though it rains then you definately'll ought to limit umbrellas and hoods to confirm all of us comprehend who's the place. that may not approximately offending people, they are merely no desire. the sole venture is the place it is composed of secure practices exams for e.g. planes. Then I ought to desire consumer-friendly experience ought to kick in and persons are asked to eliminate the masks to be sure the passport and so on. i would not probable subject approximately it. the way issues are going, quickly Jacqui Smith will enforce extremely every person to be tagged, then they are going to comprehend the place every person is. Then they are able to apply satellites to hint down all the unlawful immigrants. And every person on the scene of against the regulation would be rounded up precise away.