Articles

The video surveillance industry is constantly changing. ATV provides industry content that can help you keep up with the latest critical trends.

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VOP (Video Object Plane)

A VOP is an image frame in an MPEG- 4 video stream. There are several types of VOP: An “I-VOP” is complete image frame.  A “P-VOP” codes the differences between. Read More

Varifocal lens

A varifocal lens provides a wide range of focal lengths, as opposed to a lens with a fixed focal length, which only provides one. Read More

USB

(Universal Serial Bus) A plug- and-play interface between a computer and peripheral devices (scanners, printers etc.) Read More

UPnPTM

A se t of computer network protocols that allows the automatic peer- to -peer detection of devices on the network. UPnP is promo ted by the UPnP Forum. Read More

Unicast

Communication between a single sender and a single receiver over a network: A new connection is established for each new user. See also Multicast. Read More