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A door phone or door bell phone is a set of electrical and electronic elements used to handle communication between a resident in a house, apartment or villa and a guest outside. The device can also lock or unlock the door it has been configured to work with. Door phones have been used across a variety of commercial and residential buildings.
A professional video camera (often called a television camera even though its use has spread beyond television) is a high-end device for creating electronic moving images (as opposed to a movie camera, that earlier recorded the images on film ). Originally developed for use in television studios or with outside broadcast trucks, they are now ...
[90] [91] [92] New York City's Domain Awareness System has 6,000 video surveillance cameras linked together, [93] there are over 4,000 cameras on the subway system (although nearly half of them do not work), [94] and two-thirds of large apartment and commercial buildings use video surveillance cameras.
A video door-phone (also known as a video door entry or video intercom) is a stand-alone intercom system used to manage calls made at the entrance to a building ( residential complex, detached family home, workplace, etc.) with access controlled by audiovisual communication between the inside and outside. The main feature of video door entry is ...
1999. The teenage protagonist setting up his webcam so his friends can see a girl changing clothes. The webcast is shared publicly to his peers. [4] The Anderson Tapes. 1971. Burglars use a luxury apartment's surveillance technology to break in but are unaware of being under surveillance themselves. [3] Anon.
A video management system, also known as video management software plus a video management server, is a component of a security camera system that in general: Collects video from cameras and other sources. Records / stores that video to a storage device. Provides an interface to both view the live video, and access recorded video.
Sony HDVS. Sony HDVS ( High-Definition Video System) is a range of high-definition video equipment developed in the 1980s to support an early analog high-definition television system (used in multiple sub-Nyquist sampling encoding (MUSE) broadcasts) [1] thought to be the broadcast television systems that would be in use today.
Early smart camera (ca. 1985, in red) with an 8MHz Z80 compared to a modern device featuring Texas Instruments' C64 @1GHz. A smart camera is a machine vision system which, in addition to image capture circuitry, is capable of extracting application-specific information from the captured images, along with generating event descriptions or making decisions that are used in an intelligent and ...