G4-508HD4a User Manual & Install Guide
Glossary
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GLOSSARY
Term/Abbreviation
Description
ACC
Accelerometer
CAN
Controller Area Network is a vehicle bus standard designed to allow
microcontrollers and devices to communicate with each other in
applications without a host computer.
DVR
Digital Video Recorder – a device which records audio and video input from
the cameras and stores it to a hard disk drive and/or an SD card for
retrieval and viewing.
FTP
File Transfer Protocol is a standard network protocol used to transfer
computer files from one host to another host over a TCP-based network,
such as the Internet.
GPS
Global Positioning System – it is a radio navigation system that allows
land, sea, and airborne users to determine their exact location, velocity,
and time 24 hours a day, in all weather conditions, anywhere in the world.
H.264
Also known as MPEG-4 Part 10, Advanced Video Coding (MPEG-4 AVC), this
is a video coding format that is currently one of the most commonly used
formats for the recording, compression, and distribution of video content.
HDD
Hard Disk Drive – a high capacity data storage mechanism used for storing
and retrieving large amounts of digital data. It is one of the primary storage
mediums used by the digital video recorder for storing the recorded audio
and video, the other being SD cards.
ICD / ICD2
Interactive Control Display, purpose built touch screen monitors for
operating Gatekeeper Systems DVRs.
IO
Input/Output
IP Camera
An Internet protocol camera, or IP camera, is a type of digital video camera
commonly employed for surveillance, and which, unlike analog closed
circuit television cameras, can send and receive data via a computer
network and the Internet.
IR Remote
A handheld, wireless controller used to operate the DVR using light signals
in the infrared (IR) range. Infrared light requires line of sight to its
destination.
LAN
Local Area Network – it is a computer network that interconnects
computing devices within a limited area such as a school, work area, or an
office building.
LCD Monitor
Liquid Crystal Display Monitor – it is a display screen that uses
electronically modulated segments controlling a layer of liquid crystals
and arrayed in front of a light source (backlight) or reflector to produce
images and text.
