Glossary

 
 
A B C D E F G H I J K L M N O PQ R S T U V W X Y Z
 
 
Term B:
 

Alarm
Alarm is a facility that allows external alarms like PIR's, reed switches, vibration sensors etc. to be connected to the CCTV switcher so that a nominated camera is switched on when an alarm signal is received.

Algorithms
Complex mathematical formulae or rules used to solve problems. In video, they are used to achieve digital compression of a video picture.

Analog
Representation of data by continuously varying quantities.

Analog circuits
Electronic circuits made up of components that can handle analog signals. Examples: Resistors, capacitors etc.

ATM
It is a type of ISDN technology using constant size 53 byte cells instead of variable size packets. Because cells do not change size, they switch much faster and more efficiently.