Skip to main content

What is CCTV?

CCTV stands for Closed-circuit television. CCTV also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point (P2P), point to multipoint (P2MP), or mesh wired or wireless links.

Surveillance cameras on the corner of a building.

Though almost all video cameras fit this definition, the term is most often applied to those used for surveillance in areas that may need monitoring such as banks, stores, and other areas where security is needed. Though Videotelephony is seldom called "CCTV" one exception is the use of video in distance education, where it is an important tool.

Dome CCTV cameras.

Surveillance of the public using CCTV is common in many areas around the world. In recent years, the use of body worn video cameras has been introduced as a new form of surveillance, often used in law enforcement, with cameras located on a police officer's chest or head. Video surveillance has generated significant debate about balancing its use with individuals' right to privacy even when in public.

Dome camera in a rail station.

In industrial plants, CCTV equipment may be used to observe parts of a process from a central control room, for example when the environment is not suitable for humans. CCTV systems may operate continuously or only as required to monitor a particular event. A more advanced form of CCTV, utilizing digital video recorders (DVRs), provides recording for possibly many years, with a variety of quality and performance options and extra features (such as motion detection and email alerts). More recently, decentralized IP cameras, some equipped with megapixel sensors, support recording directly to network-attached storage devices, or internal flash for completely stand-alone operation.

There are about 350 million surveillance cameras worldwide as of 2016. About 65% of these cameras are installed in Asia. The growth of CCTV has been slowing in recent years.

Source
Close-circuit Television

Comments

Popular posts from this blog

Must Read This Before Renting

Please buy spy camera detector before renting any room or house. Please use it before going into any rented room or house.  Did I say please?
It's for your own good in privacy matters. You should read this recent article related to privacy issues.
Man arrested for allegedly filming tenants in bathroom with hidden camera A 38-year-old Jackson man spent the weekend in jail after police said they found a hidden camera in the bathroom of an apartment he manages.
"There were multiple videos of several different victims in a nude state,” said Jackson Police Lt. Roger Schultz.
The victims called police on Riley Sills after Sills sent them a picture of one of his tenants in the bathroom.
He threatened to send the photo to police, claiming he had caught one of them snorting drugs in his house.
Jackson police received a search warrant and found a hidden camera in the bathroom, disguised as a digital clock.
"The pin hole lens was almost invisible,” Schultz said. The camera mostly …

Tutorial How to Install IP Camera

Before you start installing your own IP camera, you need the right tools to do it. Another important thing you need to know is the location you want to put your IP camera. You may need  to buy some or all of the item in the list to install IP camera.
9 items to install IP Camera 1) IP Camera Of course you need IP camera to install IP camera.
2) RJ45 Cable You can use cable Cat 5 or Cat 5e or Cat 6.
3) Cable connector If you need to cut RJ45 cable, you need cable connector to connect it back with the cable.
4) EZ RJ45 Crimper You need this tool if you want to cut and connect the RJ45 cable.

5) Network LAN Hub Adapter If you have more than one IP camera, you shall use this to connect it to your computer.

6) Desktop computer
You need a desktop computer with internet connection so you can download the software to install IP camera.

7) Pencil Use it to mark on the wall, ceiling or any place you need to make hole on it.
8) Impact drill Be careful with this thing. Try to avoid using it unless you hav…

Identity Theft and Invasion of Privacy

What is spy? Spy is secretly obtaining information about certain individuals, groups, countries or any organization. Identity Theft or Invasion of Privacy? Spying could be both. Even stolen credit card information can be used to alter an individual's identity. Skip this part if you don't have a credit card.
How they steal your identity from your credit card? Firstly, they might use the credit card information to run up huge bills, forcing the credit card firms to suffer large losses or they might sell the information to other who is interested to do the same thing. Secondly, they might create new identities. For example, a criminal might contact the issuing bank of a stolen credit card and change the mailing address on the account.
Next, the criminal may get a passport or drivers license with his own picture but with the victim's name. With a driver's license, the criminal can easily acquire a new Social Security card. It is then possible to open bank accounts and rece…