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  2. Hikvision - Wikipedia

    en.wikipedia.org/wiki/Hikvision

    In June 2021, 224 Hikvision products were banned for one year by South Korea's Ministry of Science and ICT over forged test reports. [38] In September 2021, the Indian Navy's headquarters "asked its all formations to 'discontinue' procurement of CCTV cameras and surveillance systems from Hikvision," according to The Week.

  3. Closed-circuit television - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television

    CCTV monitoring at the Central Police Control Station, Munich, Germany, in 1973 Desk in one of the regional control-rooms of the National Police in the Netherlands in 2017 CCTV control-room monitor wall for 176 open-street cameras in 2017. An early mechanical CCTV system was developed in June 1927 by Russian physicist Léon Theremin. [9]

  4. Closed-circuit television camera - Wikipedia

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

    These cameras do not require a video capture card because they work using a digital signal which can be saved directly to a computer. The signal is compressed 5:1, but DVD quality can be achieved with more compression (MPEG-2 is standard for DVD-video, and has a higher compression ratio than 5:1, with a slightly lower video quality than 5:1 at best, and is adjustable for the amount of space to ...

  5. IP camera - Wikipedia

    en.wikipedia.org/wiki/IP_camera

    The first centralized IP camera, the AXIS Neteye 200, was released in 1996 by Axis Communications. [3] Although the product was advertised to be accessible from anywhere with an internet connection, [4] the camera was not capable of streaming real-time video, and was limited to returning a single image for each request in the Common Intermediate Format (CIF).

  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. Mass surveillance in China - Wikipedia

    en.wikipedia.org/wiki/Mass_surveillance_in_China

    Mass surveillance in the People's Republic of China (PRC) is the network of monitoring systems used by the Chinese central government to monitor Chinese citizens.It is primarily conducted through the government, although corporate surveillance in connection with the Chinese government has been reported to occur.