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  2. Closed-circuit television camera - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television...

    IP cameras or network cameras are digital video cameras, plus an embedded video server having an IP address, capable of streaming the video (and sometimes, even audio). [3] Because network cameras are embedded devices, and do not need to output an analogue signal, resolutions higher than closed-circuit television 'CCTV' analogue cameras are ...

  3. Closed-circuit television - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television

    In September 1968, Olean, New York, was the first city in the United States to install CCTV video cameras along its main business street in an effort to fight crime. [25] Marie Van Brittan Brown received a patent for the design of a CCTV-based home security system in 1969. (U.S. patent 3,482,037).

  4. Surveillance - Wikipedia

    en.wikipedia.org/wiki/Surveillance

    The vast majority of computer surveillance involves the monitoring of data and traffic on the Internet. [9] In the United States for example, under the Communications Assistance For Law Enforcement Act, all phone calls and broadband Internet traffic (emails, web traffic, instant messaging, etc.) are required to be available for unimpeded real-time monitoring by federal law enforcement agencies.

  5. HDcctv - Wikipedia

    en.wikipedia.org/wiki/HDcctv

    Since the coaxial cables originally used for the analog system have significant unused data spectrum available, it is a simple matter to just replace the camera and the recorder to obtain nearly seven times higher detail (1920x1080 vs 640x480) than the original camera system.

  6. Wireless security camera - Wikipedia

    en.wikipedia.org/wiki/Wireless_security_camera

    Analog wireless is found in three frequencies: 900 MHz, 2.4 GHz, and 5.8 GHz. Currently, the majority of wireless security cameras operate on the 2.4 GHz frequency. Most household routers, cordless phones, video game controllers, and microwaves operate on the 2.4 GHz frequency and may cause interference with a wireless security camera.

  7. Home security - Wikipedia

    en.wikipedia.org/wiki/Home_security

    A home security camera system software on a Windows laptop for monitoring. Home security includes both the security hardware placed on a property and individuals' personal security practices. Security hardware includes doors, locks, alarm systems, lighting, motion detectors, and security camera systems. Personal security involves practices like ...

  8. Digital video recorder - Wikipedia

    en.wikipedia.org/wiki/Digital_video_recorder

    A DVR CCTV system provides a multitude of advanced functions over VCR technology including video searches by event, time, date and camera. There is also much more control over quality and frame rate allowing disk space usage to be optimized and the DVR can also be set to overwrite the oldest security footage should the disk become full.

  9. Physical security - Wikipedia

    en.wikipedia.org/wiki/Physical_security

    Physical security involves the use of multiple layers of interdependent systems that can include CCTV surveillance, security guards, protective barriers, locks, access control, perimeter intrusion detection, deterrent systems, fire protection, and other systems designed to protect persons and property.