Quadrox QGuard User Manual Manual de usuario descargar pdf (Pagina 167)

QGuard User Manual 167

Version 4.9 Series

CRT – is the abbreviation for Cathode Ray Tube. This is a vacuum tube in which

beams are projected on a fluorescent screen-producing luminous spots. An

example is the television set.

Cursor – is a small blinking rectangle or line that indicates the current position on the

display screen.

Curtain areas – are areas of constant movement and are classified as not important

for surveillance.

Data compression – process of reducing the amount of data needed for storage or

transmission of a given piece of information (text, graphics, video, sound,

etc.), typically by use of encoding techniques.

Default – is the parameter value automatically selected by the system when you or the

program does not provide instructions. It is also called a preset value.

Delete – the removing of data from a disk or other data storage device.

Dialog box – an interface element that requires the user to provide further

information, such as number of copies to print.

Differential transmission – an option allowing the decrease in the amount of data

sent over the network, because only the differences between images are sent

over the network when this option is enabled.

Display – CRT, plasma screen, LCD, or other image producing device used to view

computer output.

DNS (Domain Name System) – is a database system that translates an IP address into

a domain name. For example, a numeric address like 192.168.120.54 can

become something like camerasite.com.

Driver – is a program that controls communication between a specific peripheral

device and the computer.

Drop-down button (menu) – is a menu of options that appears below the item when

the computer user clicks on it.

Fan (Cooler) – a device for hardware components cooling.

File – a collection of related information; a file can contain data, programs or both.

Folder – Windows element used to store documents or other folders.

Frame rate – an option used in the recordings setting for defining the number of

frames recorded per second per camera.

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Quadrox QGuard User Manual Manual de usuario Pagina 167