Video intercom
Used at door entryways, this system utilizes audio and video for
communication or movement control of people.
Video server
This device enables an analog camera to be converted into an IP one,
digitalizing the analog signals into digital images and transferring via an
Internet Protocol Network such as Intranet, LAN, or ,ISDN
connection. Therefore, an analog surveillance system can be upgraded to
an IP-based surveillance system.
Video streaming
Streaming video delivers compressed content over the Internet in the form
of packets. It is unnecessary for users to download the entire file to view
it. Instead, users may watch the real-time image as downloading. It
requires a player to decompress the signal and deliver it to the display and
audio data to a speaker.
Video surveillance
This term refers to the deployment of CCTV, IP camera, NVR, and DVR to
monitor activities in different locations for security purpose.
VPN
VPN refers to Virtual Private Network. This network uses a public
telecommunication infrastructure, such as the Internet, to offer remote
secure access to the private network. The work of VPN allows the use of
public infrastructure while maintaining the privacy (e.g. encryption) of
individual use through specific procedures or via special protocols.
Video Motion Detection
This device can define activity in a scene by analyzing the differences in the
image. The common way is triggering an alarm after detecting the unusual
movement.
