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Security cameras

    Security cameras Editor's Picks

    • About Home Security Cameras

      Numerous security tools can help you safeguard your possessions. One of the most common tools is a home security camera. Being able to monitor others can decrease your chances of being a victim of crime. more »

    • About Wireless Security Cameras

      Security footage is vital to home and business protection. Not only can security cameras help prevent and catch criminal acts, but breakthroughs in technology have allowed the placement and accessibility of security cameras to improve. The use of wireless security cameras is rapidly expanding and with this use, surveillance footage... more »

    • Starting a Self-storage Business

      Starting a self-storage business requires adequate financing to purchase a large tract of land for your buildings, the building equipment and assembly fees, roadwork to your storage units as well as operating capital for at least six months. Obtaining any type of financing in difficult economic times demands that you have an excellent... more »

    • What Are Erase Heads?

      Recording analog signals on tape was never a perfect process, largely due to limitations of the tape itself. It did, however, fill an important gap between earlier recording mediums and the digital age. Unlike digital recording, which codes an electric signal into a series of pulses, analog recording actually reproduces a signal wave... more »

    • About Video Security Systems

      Video security systems are great tools that can be implemented into homes or businesses for safety and protection. There are many different options that you should consider before deciding which system to go with. Educating yourself will help you understand the function and purpose behind video security systems. more »

    Security cameras Quick Guides

    • Home Security Cameras

      A home is one of the biggest investments any person can make so it's in your best interest to...

    Security cameras Articles

    Wikipedia

    Closed-circuit television

    Closed-circuit television (CCTV) 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 wireless links. CCTV is often used for surveillance in areas that may need monitoring such as banks, casinos, airports, military installations, and convenience stores.

    In industrial plants, CCTV equipment may be used to observe parts of a process from a central control room; when, for example, 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).

    Surveillance of the public using CCTV is particularly common in the UK, where there are reportedly more cameras per person than in any other country in the world.Lewis>Lewis, Paul. , The Guardian, March 2, 2009. There and elsewhere, its increasing use has triggered a debate about security versus privacy.

    History

    The first CCTV system was installed by Siemens AG at Test Stand VII in Peenemünde, Germany in 1942, for observing the launch of V-2 rockets."dornberger">Dornberger, Walter: V-2, Ballantine Books 1954, ASIN: B000P6L1ES, page 14. The noted German engineer Walter Bruch was responsible for the design and installation of the system.

    CCTV recording systems are still often used at modern launch sites to record the flight of the rockets, in order to find the possible causes of malfunctions, while larger rockets are often fitted with CCTV allowing pictures of stage separation to be transmitted back to earth by radio link.

    In September 1968, Olean, New York was the first city in the United States to install video cameras alo read more at » http://en.wikipedia.org/wiki/Closed-circuit+television

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